--- Log opened Sat Feb 01 00:00:21 2014
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2014-02-01T00:20:58 < ds2> anyone used the op-amps on the stm32L15x?
2014-02-01T00:25:06 < Laurenceb_> not in the L series
2014-02-01T00:25:11 < Laurenceb_> ive used the F3 ones
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2014-02-01T00:37:42 < Laurenceb_> wtf
2014-02-01T00:37:43 < Laurenceb_> https://dlnmh9ip6v2uc.cloudfront.net/assets/b/2/e/3/4/52eab222ce395f28748b456a.jpg
2014-02-01T00:37:50 < Laurenceb_> sparkfun make an stm32 board
2014-02-01T00:46:42 < ds2> do they "behave" themselves?
2014-02-01T00:46:54 < ds2> or do you spend all your time chasing noise from the digital stuff?
2014-02-01T00:55:25 < Laurenceb_> they seem to work
2014-02-01T00:55:54 < Laurenceb_> i was looking at the noise, but i didnt have the core doing much
2014-02-01T00:56:03 < Laurenceb_> noise was about 100nV/sqrt(Hz)
2014-02-01T00:56:47 < Laurenceb_> actually no
2014-02-01T00:56:57 < Laurenceb_> the core was running an imu mouse demo i wrote
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2014-02-01T01:51:27 < dongie> sup blogs
2014-02-01T01:51:49 < dongie> wav trigger? what the fuck is that
2014-02-01T01:54:26 < Laurenceb_> failboard
2014-02-01T01:54:32 < dongie> yeah looks like it
2014-02-01T01:54:34 < Laurenceb_> might be useful with decent firmware
2014-02-01T01:54:42 < dongie> im sure if emeb was involved it would mix way more than 8 trackjs at once
2014-02-01T01:54:45 < Laurenceb_> can't they grab an mp3 decoder
2014-02-01T01:54:57 < dongie> Laurenceb_: then they cant do polyphony
2014-02-01T01:55:05 < Laurenceb_> im sure theres code lurking somewhere for stm32
2014-02-01T01:55:14 < Laurenceb_> wtf is polypohony?
2014-02-01T01:55:20 < Steffanx> st provides that code.. lol
2014-02-01T01:55:30 < dongie> which, mp3 player?
2014-02-01T01:55:33 < Laurenceb_> yup
2014-02-01T01:55:47 < Steffanx> mp3 decoding/encoding
2014-02-01T01:55:54 < Steffanx> they used this often used lib.
2014-02-01T01:56:08 < dongie> helix?
2014-02-01T01:56:46 < Steffanx> yeah, i think that was it
2014-02-01T01:57:32 < Laurenceb_> wtf is polyphony anyway?
2014-02-01T01:57:45 < Laurenceb_> tons of channels?
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2014-02-01T02:02:27 < emeb> wav trigger - cute.
2014-02-01T02:03:12 < emeb> looks like they've got an mp3 version too.
2014-02-01T02:03:45 < emeb> polyphony - yeah. that means simultaneously playing different sources.
2014-02-01T02:04:11 < emeb> in musical instruments it generally means you can play more than one note at once.
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2014-02-01T02:08:05 < RaYmAn> So uhm, the stm32f20x/21x reference manual is a bit unclear to me on timers (tim4 to be specific)...In particular, if you setup ARR, PSC and DIER[UIE] = 1, then set EGR[UG] = 1 to trigger an event, will that trigger an interrupt? E.g. when CEN isn't enabled in CR1?
2014-02-01T02:08:15 < RaYmAn> (did that question even make sense?)
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2014-02-01T02:32:13 < upgrdman> sparkfun made a breakout board for an SMD resistor. what. the. fuck.      https://www.sparkfun.com/products/11999
2014-02-01T02:33:16 < dongie> is it 4.99
2014-02-01T02:33:24 < dongie> close.
2014-02-01T02:33:51 < RaYmAn> but you also get a whister and nylon standoffs ! ;)
2014-02-01T02:33:56 < RaYmAn> whisker*
2014-02-01T02:34:12 < upgrdman> or 3.96 each if you buy 100. what a bargain
2014-02-01T02:36:27 < qyx_> its being sold as a bumber!
2014-02-01T02:36:33 < qyx_> you are underestimating its value
2014-02-01T02:42:43 < dongie> bumper more like bummer
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2014-02-01T02:48:57 < dongie> what really pisses me off about sparkjew is they had the balls to beg for something like 200k cash
2014-02-01T02:49:02 < dongie> for thier pedovan tour
2014-02-01T02:49:20 < dongie> with their prices, they can fucking afford to throw away 200k on wahtever teh fuck, instead of begging for it
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2014-02-01T02:50:06 < Steffanx> and i wonder why that pisses you off
2014-02-01T02:50:26 < Steffanx> "because i can"?
2014-02-01T02:51:05 < dongie> its along the same lines of "why should i pay taxes to feed homeless niggers"
2014-02-01T02:53:08 < dongie> do you really think its ok for sparkfun t o beg for 200k to do their 'electronics tour' so they can sell even MORE of thier shit to schools and shit, which is paid by my taxes?
2014-02-01T02:54:08 < dongie> that 200k will do more good given to the same schools sparkRIP plans to visit, just so tehy buy shit somewehre else.
2014-02-01T02:55:00 < emeb> anyone remember - what was the STEX bug in the early versions of cmsis?
2014-02-01T02:56:17 < dongie> is that some gcc builtin
2014-02-01T02:56:57 < emeb> don't think so - I think it's a macro that was incorrectly set up in the early versions of core_cm3 for the F10x parts
2014-02-01T02:58:02 < emeb> when I turn on optimization I then gcc throws an error: Error: registers may not be the same -- `strexb r0,r0,[r1]'
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2014-02-01T02:58:46 < emeb> the fix: http://www.atollic.com/index.php/kb/1-kb_building/117-kb_error_in_strexb
2014-02-01T02:59:15 < Thorn> that is a bad fix, but I can't find the good one
2014-02-01T03:00:17 < dongie> good fix: dont use gcc
2014-02-01T03:00:42 < Thorn> this is the good one, basically change "=r" to "=&r" http://we.easyelectronics.ru/PahanMenski/gcc-46-i-cmsis-ispravlyaem-oshibku-kompilyacii.html
2014-02-01T03:00:54 < dongie> inline asm should never be allowed in any modern compiler
2014-02-01T03:01:02 < dongie> one would have to be nuts to think they can hand-optimize something better than the compiler
2014-02-01T03:03:18 < Thorn> you can't produce those instructions with any standard-compliant C code
2014-02-01T03:04:27 < dongie> then its not Meant to be produced
2014-02-01T03:06:50 < Thorn> these builtins could be an alternative in gcc >= 4.6 but I'm not sure http://gcc.gnu.org/onlinedocs/gcc-4.8.1/gcc/_005f_005fatomic-Builtins.html
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2014-02-01T05:00:43 < dongs> http://i.imgur.com/7PTMx9N.jpg
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2014-02-01T05:15:59 < emeb> mac software is so popular they can't keep it in stock?
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2014-02-01T05:42:16 < upgrdman> people still buy boxes of software?
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2014-02-01T05:43:29 < dongie> people still buy mac software?
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2014-02-01T06:20:08 < emeb> *sigh* n00bs always asking for boards, code, BOMs etc from all the projects I've posted on my site.
2014-02-01T06:20:14 < dongie> HEh
2014-02-01T06:20:26 < dongie> maybe they're matchboxarm rejects!
2014-02-01T06:20:40 < emeb> this time someone wanted help getting the I2S ports on an F105 working...
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2014-02-01T06:29:48 < englishman> what blog is that, emeb
2014-02-01T06:30:46 < emeb> http://ebrombaugh.studionebula.com/
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2014-02-01T06:38:17 < emeb> englishman: not really a blog. just static pages w/ various projects...
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2014-02-01T06:51:35 < englishman> will browse later, thanks
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2014-02-01T07:28:55 < upgrdman> nice case idea  http://ebrombaugh.studionebula.com/synth/armfun/armfun_fp.jpg
2014-02-01T07:29:18 < upgrdman> (not trolling) ... would work for some projects
2014-02-01T07:44:36 < dongie> what is that made out of
2014-02-01T07:44:38 < dongie> cardboard?
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2014-02-01T08:07:56 < ds2> emeb: what's your views on running opamps at 1.8V (single rail)?
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2014-02-01T08:10:47 < emeb_mac> ds2: depends on what you're doing with them
2014-02-01T08:11:14 < emeb_mac> I haven't had trouble with single-supply 3.3V op amps.
2014-02-01T08:11:27 < emeb_mac> 1.8V is getting down there tho
2014-02-01T08:13:24 < ds2> what would not do well with a 1.8V op-amp?
2014-02-01T08:14:33 < ds2> I think the STM32L15x's run at 1.8V and they have op-amps...
2014-02-01T08:34:47 < emeb_mac> ds2: limited range, noise floor becomes a larger part of the total range, etc.
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2014-02-01T08:57:37 < emeb_mac> super pro
2014-02-01T09:02:28  * emeb_mac shakes cane
2014-02-01T09:07:03 < englishman> listen to techno music http://www.youtube.com/watch?v=wZRVLAsRCWU
2014-02-01T09:11:13 < ds2> hmmm
2014-02-01T09:12:32 < englishman> done http://www.youtubedoubler.com/?video1=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DPozbCdtvixQ&start1=&video2=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DwZRVLAsRCWU
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2014-02-01T09:18:32 < englishman> everyone loves original techno viking
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2014-02-01T11:19:37 < dongs> Y U HAVE NO VIDEOS
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2014-02-01T13:19:21 < Tectu> yep, this is it..
2014-02-01T13:19:21 < Tectu> for (qi = gfxQueueASyncPeek(&gw2obj->list_head), i = iheight - 1; i < gw2obj->top && qi; qi = gfxQueueASyncNext(qi), i += iheight);
2014-02-01T13:19:29 < Tectu> for level over 9000
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2014-02-01T13:57:10 < dongie> http://www.youtube.com/watch?v=UeqkNg5oWFY&t=1m50s
2014-02-01T13:57:24 < dongie> tectu when will your shit support FT800 GPU
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2014-02-01T13:58:38 < Tectu> dongie, no plans on that but hardware accelerations is supported since ages. Every routine can be hardware accelerated or ugfx will call a software emulator (most cases).
2014-02-01T13:58:56 < dongie> pfft
2014-02-01T13:58:58 < Tectu> dongie, there are already projects using hardware accelerations successfully
2014-02-01T13:59:49 < dongie> but are they closedsores
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2014-02-01T14:00:55 < Tectu> that's not really what ugfx cares about
2014-02-01T14:01:19 < Tectu> it gives you the ability to use submit hardware acceleration routines and otherwise it will simply draw shit for you
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2014-02-01T16:31:53 < Robint91> sigh
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2014-02-01T16:45:58 < n1cew0lf> How can i change landscape in stm32f429 from vertical to horizontal? without stemwin or similarly
2014-02-01T16:46:00 < n1cew0lf> ?
2014-02-01T16:46:12 < zyp> huh?
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2014-02-01T16:46:53 < n1cew0lf> ?
2014-02-01T16:47:12 < zyp> what are you asking?
2014-02-01T16:48:43 < n1cew0lf> i want to show text at display in horizontal
2014-02-01T16:48:54 < n1cew0lf> but it show at vertical orientation
2014-02-01T16:49:10 < zyp> and what are you using to draw the text?
2014-02-01T16:49:44 < n1cew0lf> standart function from stm32f4xx_lcd.h
2014-02-01T16:50:00 < n1cew0lf> LCD_DisplayStringLine
2014-02-01T16:50:42 < zyp> as far as I know, the LTDC has no option to transform the display orientation from what is stored in the framebuffer, so you'll have to draw the text rotated into the framebuffer
2014-02-01T16:51:40 < n1cew0lf> does exist library which do it?
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2014-02-01T16:51:51 < n1cew0lf> or i must do it by my hands?
2014-02-01T16:52:00 < zyp> I don't know, ask Tectu if his library does it
2014-02-01T16:53:06 < Tectu> as far as I know, zyp is correct. The LTDC does not care about your panels orientation, it's really just a framebuffer.
2014-02-01T16:53:46 < Tectu> ugfx does handle all four orientations (landscape, portrait, inverted-landscape and inverted-portrait). But it's really just a matter of fixing your routines to correctly output the pixels.
2014-02-01T16:53:48 < n1cew0lf> and u have no existing libraru?
2014-02-01T16:54:02 < Tectu> http://ugfx.org
2014-02-01T16:54:07 < n1cew0lf> thx u
2014-02-01T16:54:10 < Tectu> that's all I can offer from my side.
2014-02-01T16:54:38 < Tectu> And please stop doing that short form texting like 'u' and 'thx', we are not 13 years old facebookers.
2014-02-01T16:55:26 < n1cew0lf> Thanks you,sorry for my faults
2014-02-01T16:55:49 < Tectu> that's not a fault :)
2014-02-01T16:55:56 < Tectu> and it's just my personal opinion anyway.
2014-02-01T16:56:01 < zyp> Tectu, you're sounding angry today, having a bad day? :p
2014-02-01T16:56:25 < Tectu> zyp, nah, not really :)
2014-02-01T16:56:30 < Tectu> zyp, but thanks for asking :P
2014-02-01T16:56:56 < Tectu> zyp, I was only forced to see very odd looking meat blobs:  http://ugfx.org/demos/oven-thermometer
2014-02-01T16:57:02 < Tectu> zyp, they kinda got me down :(
2014-02-01T16:58:54 < zyp> it's called food
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2014-02-01T17:00:35 < Tectu> does the food of your country look the same strange way?
2014-02-01T17:01:13 < zyp> what do you find strange?
2014-02-01T17:02:07 < gnomad> Tectu: fu kthxbye.
2014-02-01T17:05:35 < Tectu> n1cew0lf, did you find what you need?
2014-02-01T17:10:24 < n1cew0lf> not at all
2014-02-01T17:10:33 < n1cew0lf> i dont uderstand what kind of i need
2014-02-01T17:10:35 < n1cew0lf> gdisp?
2014-02-01T17:12:16 < Tectu> Yes, that one most likely.
2014-02-01T17:12:22 < Tectu> That's the module that handles all the display magic
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2014-02-01T17:14:41 < bvernoux> hi
2014-02-01T17:15:09 < n1cew0lf> but i need to find my display at list,yes?
2014-02-01T17:15:39 < Tectu> zyp, you already used FreeRTOS, no?
2014-02-01T17:15:53 < Tectu> zyp, is there some way to check whether the scheduller is already running before I invoke another vTaskStartScheduler() ?
2014-02-01T17:16:04 < Tectu> n1cew0lf, not sure what you mean.
2014-02-01T17:16:32 < zyp> no, I haven't
2014-02-01T17:16:43 < Tectu> The display that is on the STM32F429i-Discovery board is already supported (ILI9481)
2014-02-01T17:16:51 < Tectu> but still no board files :D
2014-02-01T17:17:32 < n1cew0lf> what this mean?
2014-02-01T17:17:35 < n1cew0lf> ahhh
2014-02-01T17:17:45 < n1cew0lf> just display, no board files?)
2014-02-01T17:18:43 < n1cew0lf> allright,thanks all for help) all working and working good)
2014-02-01T17:19:19 < Tectu> what... you got ugfx working in 20 minutes?
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2014-02-01T17:20:35 < n1cew0lf> yep
2014-02-01T17:20:39 < n1cew0lf> just include
2014-02-01T17:20:41 < n1cew0lf> write
2014-02-01T17:20:48 < n1cew0lf> i need to show 1 string
2014-02-01T17:20:55 < Tectu> o.O
2014-02-01T17:21:04 < Tectu> can you show me your board files?
2014-02-01T17:21:37 < n1cew0lf> what you mean?
2014-02-01T17:22:28 < Tectu> I see.
2014-02-01T17:23:57 < n1cew0lf> ?
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2014-02-01T20:40:35 < emeb_mac> what's a good 10/100 phy? LAN8720?
2014-02-01T20:50:34 < qyx_> i was using ksz8051mll
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2014-02-01T20:50:45 < qyx_> now i am using ksz8081rna
2014-02-01T20:50:52 < qyx_> it's also 24pin qfn
2014-02-01T20:52:04 < MrMobius> someone said 8051?
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2014-02-01T20:55:35 < emeb_mac> qyx_: you happy with it?
2014-02-01T21:01:26 < qyx_> i would say.. no problems with them
2014-02-01T21:10:00 < emeb_mac> cool
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2014-02-01T23:22:54 < mic585> Hello, im using a stm32f407 and i was wondering why my openocd connection drops when i alter gpio pin A14. Is this somehow connected to the jtag interface ?
2014-02-01T23:23:44 < gxti> yes.
2014-02-01T23:24:27 < mic585> Thank you for conforming this.
2014-02-01T23:26:00 < gxti> PA13 is also
2014-02-01T23:26:47 < emeb> gxti: what's a good 10/100 phy?
2014-02-01T23:27:01 < gxti> emeb: probably anything
2014-02-01T23:27:13 < gxti> i chose the micrel ones because they were cheapest at the time
2014-02-01T23:27:31 < emeb> looks like the lan8720 is about $1.20 now
2014-02-01T23:29:12 < gxti> but aside from soldering issues because qfn=dicks i've had no cause for complaint
2014-02-01T23:31:12 < emeb> how did you solder the qfn? I've been doing paste stencil + hot air and it seems OK.
2014-02-01T23:31:45 < gxti> stencil and toaster oven. if i have to rework i tin the pads and cover it with paste flux, and hot air
2014-02-01T23:32:27 < mic585> Im also running into another error which is somewhat more peculiar. This is perhaps not the best place to ask this but i dont know where else to start. When i issue a gbd load in my .gdbinit it appears this is ignored. When i flash with a with a telnet connection everything is fine. This is especially strange as gdb load works fine on my work laptop. I use LMint16 on an asus n56 at home which doesnt work and i use LMint16 on a Macbook Pro at work which does wor
2014-02-01T23:32:27 < mic585> k. Any ideas ?
2014-02-01T23:33:05 < karlp> run us through those steps again please?
2014-02-01T23:33:16 < karlp> what's in your gdb init, and what works when? I (at least) didn't quite follow
2014-02-01T23:33:26 < mic585> can i copy paste in here?
2014-02-01T23:34:24 < karlp> no, you can use a paste service like a normal person
2014-02-01T23:34:34 < mic585> pastebin then
2014-02-01T23:36:41 < mic585> http://hastebin.com/ritoyilece.avrasm
2014-02-01T23:37:36 < mic585> its strange because that first gdbinit script works fine on another laptop which is running the same OS, arm-none-eabi and openocd
2014-02-01T23:38:46 < mic585> Could it be something related to usb drivers? This laptop only has usb 3.0 ports.
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2014-02-01T23:41:22 < mic585> this seems related : http://www.emblocks.org/forum/viewtopic.php?f=19&t=139
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2014-02-02T00:09:08 < mic585> what does it mean when openocd gives the following error : address + size wrapped?
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2014-02-02T05:00:33 < upgrdman> getting a gooseneck tablet mount was a great idea    http://farrellf.com/temp/tablet_mount.jpg
2014-02-02T05:11:30 < dongs> hello dongs
2014-02-02T05:11:37 < dongs> R2COM: cool
2014-02-02T05:11:55 < dongs> upgrdman: wtf am i looking at
2014-02-02T05:12:01 < dongs> other than mactrash and a faglet
2014-02-02T05:12:27 < upgrdman> dongs: i got a gooseneck mount for the tablet
2014-02-02T05:12:59 < dongs> ya no idea what that is.
2014-02-02T05:13:08 < dongs> i have yet to find a usecase for any  tablet
2014-02-02T05:13:12 < upgrdman> it was a compromise. i wanted a high res display that was portable. the tablet was the closest i could get that was high res... and i already had it
2014-02-02T05:13:34 < dongs> upgrdman: maybe you missed the part wehre you can connect jewpad display to your trashbook with displayport
2014-02-02T05:13:37 < dongs> and have a real display
2014-02-02T05:13:40 < dongs> instead of some limited gimped shit.
2014-02-02T05:13:43 < upgrdman> dongs: http://www.amazon.com/generation-smartphone-transformer-blackberry-Easy-Adjust/dp/B00A86QWN0/ref=sr_1_1?ie=UTF8&qid=1391310815&sr=8-1&keywords=tablet+gooseneck
2014-02-02T05:14:13 < upgrdman> dongs: ya i know that. but i often just need a web page on the second display. like docs for an api, etc.
2014-02-02T05:14:46 < dongs> and youre willing to put up with the fact that yo ucant directly do anything wiht that from PC? ok, i guess you DO use a mac after all..
2014-02-02T05:16:16 < qyx_> should i join the argue with my lunex?
2014-02-02T05:16:31 < qyx_> *rgument
2014-02-02T05:17:02 < upgrdman> dongs: i use linux on the mac more often than os x
2014-02-02T05:17:42 < upgrdman> but if you want a good lcd, at a useable size, a windows laptop can't compare.
2014-02-02T05:17:48 < upgrdman> 1080p isnt high res
2014-02-02T05:17:59 < upgrdman> 13" is too small
2014-02-02T05:19:13 < dongs> ?
2014-02-02T05:19:41 < upgrdman> whats non-apple laptop, with a 15+ inch screen, has a good high res screen?
2014-02-02T05:20:23 < upgrdman> looking at whats out there, they all suck. max out at 1080p. or shit contrast. or shit brightness. etc...
2014-02-02T05:23:05 < upgrdman> sadly, apple's touchpad is also superior to any other one out there.
2014-02-02T05:23:23 < upgrdman> it's a shame really. if you want good hardware, there are few options out there.
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2014-02-02T08:07:20 < dongie> apples "touchpad" has no fucking buttons
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2014-02-02T10:28:21 < dongie> http://www.xevel.fr/blog/public/whatever/tmp006_deadbug_01.JPG
2014-02-02T10:28:41 < dongie> silly french
2014-02-02T10:45:17 < madist> why did he use stranded wire ??
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2014-02-02T10:54:50 < dongie> haha
2014-02-02T10:54:51 < dongie> weird
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2014-02-02T10:56:59 < dongie> https://www.kickstarter.com/projects/fixmestick/fixmestick-for-mac?ref=category HOW THE FUCK IS THIS GETTING FUNDED
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2014-02-02T11:14:17 < dongie> https://www.kickstarter.com/projects/160994760/water-cooling-block-for-butterfly-labs-bitcoin-min
2014-02-02T11:14:21 < dongie> lol
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2014-02-02T11:19:44 < dongie> https://www.kickstarter.com/projects/john-cole/arduberry-unite-raspberry-pi-and-arduino?ref=category
2014-02-02T11:25:50 < dongie> https://www.kickstarter.com/projects/1587823871/wet-diaper-detector-keychain-children-and-nursing how the fuck
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2014-02-02T12:14:32 < Tectu> do you guys think that a combination of strlen() + memcpy() is really that much faster than one strcpy() ? I got this patch here: http://pastebin.com/ueeZHhsZ
2014-02-02T12:16:33 < Tectu> I put a strcpy() there because it stops at \0.
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2014-02-02T12:46:21 < dongie> memcpy can probly get optimized by platform
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2014-02-02T13:20:38 < Robint91> hi all
2014-02-02T13:20:43 < fbs> hi
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2014-02-02T13:24:07 < Tectu> thanks dongie
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2014-02-02T14:15:57 < dongie> god damn
2014-02-02T14:16:03 < dongie> i fucking hate looking for voltage divider on dc/dc
2014-02-02T14:16:10 < dongie> why hsant someone written a fucking app
2014-02-02T14:16:14 < dongie> that takes standard resistor values
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2014-02-02T14:16:17 < dongie> and feedback voltage
2014-02-02T14:16:24 < dongie> and that  dumb 1+r1/r2 shit and plugs it in
2014-02-02T14:16:30 < Tectu> there are trillions
2014-02-02T14:16:32 < dongie> and gives a list of least retarded values for a given voltage
2014-02-02T14:16:39 < Tectu> I used to have one on my old android
2014-02-02T14:16:39 < dongie> PLEASE LINK ME TO ONE
2014-02-02T14:16:53 < Tectu> you could even specify your E thing
2014-02-02T14:16:56 < dongie> Tectu: and they all include sttandard resistor values?
2014-02-02T14:16:56 < Tectu> E12, E24 etc.
2014-02-02T14:16:59 < Tectu> yes
2014-02-02T14:16:59 < dongie> really.
2014-02-02T14:17:00 < dongie> waht hte fuck.
2014-02-02T14:17:01 < Tectu> yes.
2014-02-02T14:17:02 < dongie> LINK NOW>
2014-02-02T14:17:15 < Tectu> https://play.google.com/store/apps/details?id=it.android.demi.elettronica&hl=en
2014-02-02T14:17:33 < Tectu> obviously you'll need an android device
2014-02-02T14:18:31 < fbs> http://www.electronics2000.co.uk/calc/potential-divider-calculator.php ?
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2014-02-02T14:18:57 < dongie> fbs: wut. no i need one for vregs
2014-02-02T14:19:09 < fbs> oh
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2014-02-02T14:20:24 < Tectu> dongie, ah, thought the same as fbs posted
2014-02-02T14:20:31 < Tectu> dongie, but afaik the app I linked does that as well :P
2014-02-02T14:20:43 < dongie> Tectu: it doesnt. it only does LM317
2014-02-02T14:20:48 < dongie> payware trash has "custom"
2014-02-02T14:20:53 < dongie> fuck
2014-02-02T14:20:57 < fbs> write it urself
2014-02-02T14:21:17 < dongie> dude.
2014-02-02T14:21:41 < fbs> dudette
2014-02-02T14:21:50 < Tectu> ##stm32 rule nr.1, don't get the dongs mad.
2014-02-02T14:21:57 < Tectu> ##stm32 rule nr.2, if you did, run.
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2014-02-02T14:22:02 < dongie> http://www.daycounter.com/Calculators/Voltage-Regulator-Resistor-Divider-Calculator.phtml
2014-02-02T14:22:05 < dongie> gettin close
2014-02-02T14:22:17 < dongie> except no fucking standard resistor values
2014-02-02T14:22:18 < Tectu> wtf is .phtml
2014-02-02T14:22:22 < fbs> i had 5 mad dongs behind me yesterday
2014-02-02T14:22:22 < dongie> i can just keep refreshing trash in wolframalpha
2014-02-02T14:22:24 < dongie> wiht same effect
2014-02-02T14:22:43 < Tectu> fbs, then you should probably gtfo.
2014-02-02T14:22:49 < fbs> i did
2014-02-02T14:23:10 < dongie> nope
2014-02-02T14:23:12 < dongie> useless shit
2014-02-02T14:23:56 < fbs> what do you exactly need calculated?
2014-02-02T14:23:57 < dongie> http://www.wolframalpha.com/input/?i=0.8V*%281%2B53.6%2F10%29 need 5V out of this shit
2014-02-02T14:24:25 < dongie> but that shit's E96
2014-02-02T14:24:38 < fbs> solve 0.8 * (1+x/10) = 5 ?
2014-02-02T14:24:51 < dongie> ...
2014-02-02T14:24:59 < fbs> why do you need exactly 5V? 5.088 is quite close
2014-02-02T14:25:12 < dongie> because thats a bullshit resistor value
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2014-02-02T14:25:39 < fbs> yes whatst he formula you start with
2014-02-02T14:25:57 < dongie> um, 0.8*(1+r1/r2) the usual shit
2014-02-02T14:26:02 < dongie> for every regulator out there
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2014-02-02T14:26:18 < dongie> the thing is I shouldnt have to manually futz with this shit
2014-02-02T14:26:38 < dongie> i need to give it Vref, Vout, and Exx value for resistors and it gives me a bunch of choices.
2014-02-02T14:26:52 < zyp> http://www.wolframalpha.com/input/?i=0.8V*%281%2Br1%2Fr2%29%3D5V
2014-02-02T14:27:02 < zyp> gives r1 = 5.25 r2
2014-02-02T14:27:44 < fbs> if you use http://www.electronics2000.co.uk/calc/potential-divider-calculator.php and put 5 and 0.8 in the 2nd one it solves it
2014-02-02T14:28:00 < fbs> gives 8.4 and 1.6
2014-02-02T14:28:51 < fbs> http://www.wolframalpha.com/input/?i=0.8*%281%2B8.4%2F1.6%29
2014-02-02T14:29:13 < fbs> the e24 values gives 4.9v
2014-02-02T14:31:27 < fbs> makes sense
2014-02-02T14:32:36 < fbs> standard voltage divider, Vo * r2/(r1+r2) = Vref. Vref(r1+r2) = Vo*r2. (Vref*r1+Vref*r2)/r2 = Vo. Vref*(1+r1/r2) = Vo
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2014-02-02T14:35:16 < fbs> http://www.wolframalpha.com/input/?i=v*%28r1%2Br2%29%2Fr2 alternate forms dongie
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2014-02-02T15:20:07 < fbs> hi Laurenceb_
2014-02-02T15:20:11 < Laurenceb_> hi
2014-02-02T15:20:15 < fbs> sup
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2014-02-02T15:20:37 < Laurenceb_> im just going out, thats what :P
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2014-02-02T16:48:13 < Tectu> so any valgrind users here?
2014-02-02T16:48:17 < Tectu> I get something like this    Conditional jump or move depends on uninitialised value(s)
2014-02-02T16:48:22 < Tectu> does anybody have experience with these?
2014-02-02T16:49:35 < fbs> do you have  --track-origins=yes ?
2014-02-02T16:53:21 < Tectu> fbs, are you one of those guys who just google other peoples question to look smart?
2014-02-02T16:53:46 < fbs> i looked at the valgrind docs
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2014-02-02T16:54:22 < fbs> quite hard to give an answer with the info you gave
2014-02-02T16:55:33 < fbs> but hey, fuck you too :)
2014-02-02T16:56:37 < talsit> Tectu, i do
2014-02-02T16:57:06 < talsit> what do you wanna know about them?
2014-02-02T16:57:17 < Tectu> talsit, I'm not sure whether I understand the problem correctly - it tries to tell me that if (foo = bar)   <---  bar MIGHT be unitinialized under certain circumstances?
2014-02-02T16:57:45 < talsit> no, but "if(foo == bar)" may
2014-02-02T16:57:58 < talsit> foo, or bar
2014-02-02T16:58:10 < Tectu> ah
2014-02-02T16:58:35 < talsit> it can happen in situations like this: char buf[100]; strcpy(buf, "blah"); printf(buf);
2014-02-02T16:58:48 < talsit> because bytes 5-100 of buf have been uninitialised
2014-02-02T16:58:49 < Tectu> so the progress to find the problem is to reverse treewalk every possible branch until the point where it should have been initialised the first time?
2014-02-02T16:58:55 < karlp> all hail the mighty valgrind
2014-02-02T16:59:02 < talsit> and printf does conditional jumps on values of buf
2014-02-02T16:59:16 < Tectu> aha!
2014-02-02T16:59:24 < Tectu> that could already be my problem, talsit :P
2014-02-02T16:59:37 < Tectu> so is it safe just to ignore it in that case? calling bzero() does require CPU time, you know
2014-02-02T16:59:47 < talsit> Tectu, you can tell valgrind to tell you where the "offending" variable was created
2014-02-02T17:00:09 < talsit> Tectu, well, i for one, would *always* initialise my variables
2014-02-02T17:00:12 < Tectu> talsit, I already tried  --track-origins=yes   yesterday but it didn't really do what I expected
2014-02-02T17:00:22 < Tectu> talsit, but you don't initialize a 20k buffer on runtime, do you?
2014-02-02T17:00:32 < talsit> of course i do
2014-02-02T17:00:42 < talsit> at the start of the program
2014-02-02T17:00:55 < Tectu> ah, so it's just a matter of .bss then and no CPU time required, right?
2014-02-02T17:01:18 < Tectu> (.bss is the zero-initialized field, if I remember correctly)
2014-02-02T17:01:21 < talsit> if i have a 20k buffer on the stack in a function, then i'm pretty sure that that particular function doesn't give a flying fuck about CPU time
2014-02-02T17:01:37 < Tectu> heh
2014-02-02T17:01:42 < Tectu> talsit, so I call valgrind like this:     valgrind --leak-check=full --track-origins=yes  ./ugfx
2014-02-02T17:02:00 < talsit> that sounds about right
2014-02-02T17:02:07 < Tectu> and I get this   http://pastebin.com/ZT5axTwc
2014-02-02T17:02:16 < Tectu> so I should just take a look at _gwindowCreate() ?
2014-02-02T17:02:38 < talsit> that called malloc on line 105
2014-02-02T17:02:46 < talsit> what's at line 105 of gwin.c ?
2014-02-02T17:03:03 < Tectu> 		if (!(pgw = gfxAlloc(vmt->size)))
2014-02-02T17:03:05 < Tectu> surprise :D
2014-02-02T17:03:16 < Tectu> and pgw has some unitialized fields here
2014-02-02T17:03:20 < Tectu> so I should probably fix that
2014-02-02T17:03:25 < talsit> and does pgw get memset after alloc?
2014-02-02T17:03:34 < Tectu> nope
2014-02-02T17:03:38 < talsit> or better yet, initalised to "good" values?
2014-02-02T17:03:38 < Tectu> I initialize all the fields manually
2014-02-02T17:03:56 < talsit> that would help
2014-02-02T17:03:56 < Tectu> but I forgot to initialize some because they are only getting initialized in an   #if   branch
2014-02-02T17:04:11 < talsit> yeah... about that...
2014-02-02T17:04:31 < Tectu> thank you very much for your help
2014-02-02T17:04:35 < talsit> np
2014-02-02T17:05:11 < talsit> but also, valgrind can pick up lots of stuff that you *know* is correct, so you can add them to your known-to-be-good list
2014-02-02T17:05:22 < talsit> and valgrind will ignore/supress it
2014-02-02T17:05:33 < Tectu> ah, I can actually add them to a list?
2014-02-02T17:05:43 < Tectu> Because I get a lot of leaking because a lot of stuff form the init() is not being freed
2014-02-02T17:05:45 < talsit> yep, can't remember how though
2014-02-02T17:05:47 < Tectu> because there are no deinit()
2014-02-02T17:05:53 < Tectu> well, I'll google / RTFM then
2014-02-02T17:06:04 < Tectu> but it makes no sense to free them as you need them during the whole runtime
2014-02-02T17:06:10 < Tectu> so no reason to have a deinit(), IMHO
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2014-02-02T17:06:51 < talsit> thing is, if you're malloc'ing data, you should be free'ing, no matter what
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2014-02-02T17:07:20 < Tectu> that would require to have a deinit() function for EACH and EVERY module
2014-02-02T17:07:37 < talsit> imagine that you decide to port your code to something else, that requires explicit lifecycles, then you have to add all that anyway
2014-02-02T17:07:46 < talsit> Tectu, yep, that's the point
2014-02-02T17:08:21 < Tectu> talsit, why should I deini() my display module when you have completely NO REASON to ever do that as you won't be executing the application then amyore
2014-02-02T17:08:22 < Tectu> anymore
2014-02-02T17:08:28 < Tectu> it's creationg and kill by power-off
2014-02-02T17:08:48 < Tectu> explicit lifecycles for a GUI lib?
2014-02-02T17:08:57 < talsit> does it run on linux or any other platform?
2014-02-02T17:09:01 < Tectu> yes
2014-02-02T17:09:12 < Tectu> currently ChibiOS/RT, FreeRTOS, Windows, Linux, MacOS X
2014-02-02T17:09:28 < Tectu> and on the latters - as soon as you kill the program, the virtual memory is being freed anyways?
2014-02-02T17:09:29 < talsit> so, whenever you finish running the program, you unplug the computer at the wall, without powering it down first?
2014-02-02T17:10:06 < Tectu> heh
2014-02-02T17:10:08 < talsit> you are not cleaning up after yourself, that can be bad
2014-02-02T17:10:37 < talsit> sometimes, you have to re-initialise modules or parts of code, having them shut themselves cleanly is a must
2014-02-02T17:10:38 < Tectu> okay, I believe you, but can you give a certain example anyway?
2014-02-02T17:10:52 < Tectu> okay
2014-02-02T17:10:59 < talsit> this is from a long time ago
2014-02-02T17:11:01 < Tectu> I'll add a proper deinit() to everything them
2014-02-02T17:11:29 < talsit> when you wanted to change display format, say, from 16bpp to 32bpp, you had to shut everything down, re-init, re-upload textures, etc
2014-02-02T17:12:37 < Tectu> I see
2014-02-02T17:12:53 < Tectu> ==4152==    definitely lost: 9 bytes in 1 blocks
2014-02-02T17:12:53 < Tectu> ==4152==    indirectly lost: 0 bytes in 0 blocks
2014-02-02T17:12:53 < Tectu> ==4152==      possibly lost: 544 bytes in 2 blocks
2014-02-02T17:12:55 < Tectu> all from init()
2014-02-02T17:14:32 < Tectu> talsit, how do "possible lost" work anyway. shouldn't valgrind be able to track EVERYTHING as it hooks all the malloc() and frees()
2014-02-02T17:14:34 < Tectu> (and friends)
2014-02-02T17:15:04 < talsit> no, malloc sometimes does funky stuff with free-block lists
2014-02-02T17:15:45 < Tectu> can you explain?
2014-02-02T17:15:49 < talsit> and sometimes, you assign a malloc'd pointer to another variable in a conditional
2014-02-02T17:16:34 < talsit> and if that conditional had branched differently, it may have been free'd
2014-02-02T17:16:40 < Tectu> I see
2014-02-02T17:16:45 < talsit> etc
2014-02-02T17:16:47 < Tectu> well, thank you very much for your time. I'll fix stuff up then
2014-02-02T17:17:00 < talsit> valgrind can't run every single possible execution path
2014-02-02T17:17:45 < Tectu> I wonder why anybody would need a GUI for valgrind, to be honest
2014-02-02T17:17:50 < Tectu> it's console output is more than clear, I think
2014-02-02T17:18:25 < talsit> well, you can also use valgrind for profiling
2014-02-02T17:18:35 < talsit> and it can tell you which functions get called from where
2014-02-02T17:18:53 < talsit> and that info is better represented visually
2014-02-02T17:19:11 < Tectu> I should probably take a better look at valgrind
2014-02-02T17:19:14 < Tectu> seems to be quite handy
2014-02-02T17:19:39 < talsit> it is
2014-02-02T17:20:29 < Tectu> which GUI did you use?
2014-02-02T17:20:32 < Tectu> do you prefer*
2014-02-02T17:20:49 < talsit> it's been a while since i did the profiling stuff
2014-02-02T17:20:56 < talsit> kcachegrind, i think
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2014-02-02T17:29:03 < n1cew0lf> sorry for question, but with which fuction can i show data from vcp in stm32f429?
2014-02-02T17:29:05 < Tectu> n1cew0lf, please stop trying to DCC me
2014-02-02T17:29:29 < n1cew0lf> i'm sorry, i'm try to chat with you><
2014-02-02T17:29:45 < n1cew0lf> how can i write message to you at this chat?
2014-02-02T17:29:54 < Tectu>  /query tectu
2014-02-02T17:29:57 < Tectu> but I'm not sure why I just told you that
2014-02-02T17:30:05 < Tectu> why do you want to chat with me in a private query?
2014-02-02T17:30:13 < Tectu> there are enough public channels on this network that will fit your quesiton.
2014-02-02T17:30:14 < Tectu> question*
2014-02-02T17:30:34 < talsit> Tectu, why so hostile?
2014-02-02T17:30:42 < talsit> can't you see he's a NICE wolf?
2014-02-02T17:30:52 < Tectu> talsit, lol
2014-02-02T17:31:11 < mumptai> he actually is a nice 1
2014-02-02T17:32:00 < Tectu> bit shy as it appears
2014-02-02T17:33:27 < Tectu> n1cew0lf, if you have ugfx related question, you might want to join #ugfx
2014-02-02T17:34:10 < mumptai> but, actually people get the way of irc, and just ask or they don't
2014-02-02T17:35:03 < Tectu> or they try to query random people
2014-02-02T17:36:29 < Tectu> n1cew0lf, you still alive, sir?
2014-02-02T17:36:53 < talsit> Tectu you should try DCC'ing him
2014-02-02T17:37:07 < Tectu> stop being rediculous :D
2014-02-02T17:37:12 < Tectu> I didn't even know that my irc client can handle that
2014-02-02T17:37:13 < talsit> red?
2014-02-02T17:38:04 < Tectu> ?
2014-02-02T17:38:33 < talsit> http://www.thefreedictionary.com/rediculous
2014-02-02T17:39:50 < Tectu> :/
2014-02-02T17:54:51 < Tectu> I'm leaving now
2014-02-02T17:54:52 < Tectu> cu firends
2014-02-02T17:54:54 < Tectu> friends*
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2014-02-02T20:37:51 < emeb_mac> wonder what's needed if you want an OTG port to be able to accept power from VBUS when acting as a device.
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2014-02-02T20:38:28 < emeb_mac> but also supply power when acting as host.
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2014-02-02T20:40:45 < Steffanx> i wouldnt be surprised if there is a chip for it emeb_mac :D
2014-02-02T20:41:09 < emeb_mac> Steffanx: probably. haven't found it yet tho.
2014-02-02T20:41:21  * emeb_mac has weak google-fu
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2014-02-02T20:58:08 < gxti> you don't really need a special chip for that, probably most usb host power switches would work. add a reverse schottky diode.
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2014-02-02T21:32:16 < emeb_mac> gxti: that had occurred to me.
2014-02-02T21:34:24 < zyp> so what is the other power source you have and how do you deal with having both connected at the same time?
2014-02-02T21:36:47 < emeb_mac> other power source is a 5V wall wart.
2014-02-02T21:37:06 < emeb_mac> still ruminating on how to guard against stupid hookups.
2014-02-02T21:38:10 < emeb_mac> starting to think it might be best just to put in a jumper and rely on the user's intelligence.
2014-02-02T21:38:15 < emeb_mac> I know that's asking a lot
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2014-02-02T21:43:05 < gxti> put a series diode on the DC input with a divider so you can sense whether it's connected
2014-02-02T21:44:52 < gxti> then you effectively have a diode-or for power input, plus a switch to enable power output
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2014-02-02T21:47:08 < Robint91> http://www.linear.com/product/LTC4413
2014-02-02T21:47:10 < Robint91> meh
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2014-02-02T22:00:14 < emeb_mac> nice part. as expected for LTC they're not inexpensive.
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2014-02-02T22:01:45 < gnomad> yeah, thats my love-hate relationship with LTC
2014-02-02T22:02:01 < gnomad> love the parts, hate the price.
2014-02-02T22:03:12 < Robint91> NOPE, Philip Seymour Hoffman is dead
2014-02-02T22:03:23 < gnomad> found with a needle in his arm...
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2014-02-03T00:42:21 < upgrdman> ◉‿◉
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2014-02-03T00:50:16 < Steffanx> Get some proper sun glasses upgrdman
2014-02-03T00:55:16 < upgrdman> good idea
2014-02-03T01:12:37 < dongie> use tarduino pro mini
2014-02-03T01:13:33 < Laurenceb_> https://www.kickstarter.com/projects/1682852725/the-starfire-space-cannon
2014-02-03T01:13:55 < dongie> old
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2014-02-03T01:14:37 < Laurenceb_> not gunna work
2014-02-03T01:14:42 < gxti> duh
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2014-02-03T01:22:54 < dongie> so hes gonna give shit escape velocity AND get it into space without any propulsion on the load?
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2014-02-03T01:22:57 < dongie> thats pretty awesome man
2014-02-03T01:23:04 < dongie> lemme give him $100 CAD
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2014-02-03T01:28:23 < Laurenceb_> lol
2014-02-03T01:28:40 < Laurenceb_> dongie will give him a bullet in the head like a certain mr bull got
2014-02-03T01:32:49 < Laurenceb_> that reminders me... i wonder if CastAR have made anything yet
2014-02-03T01:32:56 < dongie> nope
2014-02-03T01:33:46 < dongie> TRUST .. I trust Jeri & Rick. I trust them to make the best product they can and best business decisions they can. None of us backers are in a position to understand the whole picture or what lawyers or such are advising them to do or not do. With out those two guys, castAR would not exist. If they think there is a need for being more secretive, then that is how true supporters should feel also.
2014-02-03T01:36:13 < qyx_> hh
2014-02-03T01:39:19 < Laurenceb_> is that a real comment??
2014-02-03T01:39:23 < dongie> y
2014-02-03T01:39:27 < dongie> on dickstarter update
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2014-02-03T01:42:07 < Laurenceb_> irl lulz
2014-02-03T01:42:28 < dongie> apparently they're using some TI DLP stuff now?
2014-02-03T01:42:48 < dongie> the "updates" are on "twatter" and "TI facebook page"
2014-02-03T01:42:52 < dongie> cba to check either
2014-02-03T01:44:23 < Laurenceb_> hmm
2014-02-03T01:44:34 < Laurenceb_> ok they maybe grew some brains
2014-02-03T01:44:53 < Laurenceb_> but i doubt they could design the optics on their own
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2014-02-03T01:49:58 < dongie> private demos probably because the new "prototypes" are so huge they only fit on rick's fat head
2014-02-03T01:50:12 < dongie> since all old prototypes were just faked
2014-02-03T01:53:23 < englishman> holy koolaid drinkers batman
2014-02-03T01:54:26 < englishman> current status of blink.ino http://www.youtube.com/watch?v=MTVKsk2iSZE
2014-02-03T01:55:16 < dongie> i like that out of focus with the beat
2014-02-03T01:56:04 < englishman> when the whole strip is full white, half of them turn yellow and the end of the strip measures 2.4V
2014-02-03T01:56:07 < englishman> also, heat
2014-02-03T01:56:15 < dongie> nice voltae drop
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2014-02-03T03:38:30 < qyx__> hm, are you any having issues with freenode atm?
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2014-02-03T03:38:51 < gnomad> all of us are
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2014-02-03T04:20:59 !card.freenode.net [freenode-info] channel flooding and no channel staff around to help? Please check with freenode support: http://freenode.net/faq.shtml#gettinghelp
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2014-02-03T04:32:54 < dongie> ugh
2014-02-03T04:32:57 < dongie> i dont think this shit is gtonna wokr wiht 5V lcd
2014-02-03T04:32:58 < dongie> H level is VDD-1.0
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2014-02-03T04:33:24 < emeb> we all back?
2014-02-03T04:33:26 < dongie> blame superbowl
2014-02-03T04:33:27 < dongie> fucking stoners
2014-02-03T04:33:29 < emeb> was wondering
2014-02-03T04:33:34 < emeb> superb owl is on and freenode goes down?
2014-02-03T04:33:40 < qyx_> dongie: configure as opendrain and use pullups :X
2014-02-03T04:33:42 < qyx_> you don't need super speed with that
2014-02-03T04:33:44 < emeb> that'll work FREAKIN' GREAT!
2014-02-03T04:33:46 < dongie> i bet
2014-02-03T04:33:47 < qyx_> or use proper lcd other than this $2 part
2014-02-03T04:33:50 < dongie> my office pal says he used this shit with F3 and it worked
2014-02-03T04:33:51 < dongie> just copying his schema
2014-02-03T04:33:53 < dongie> apparently VO is like ~1V typically
2014-02-03T04:33:53 < dongie> i dont need to bring it to 5V
--- Log closed Mon Feb 03 04:33:59 2014
--- Log opened Mon Feb 03 04:46:44 2014
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2014-02-03T08:11:53 < dongie> pricing is very similar to that yanmar shit except its actualyl avilaable to buy
2014-02-03T08:11:53 < GargantuaSauce> woah ti has its own architecture?
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2014-02-03T08:17:37 < dongie> sounds like some DSP tarsh
2014-02-03T08:17:37 < dongie> like all TMSxxxxx shit
2014-02-03T08:17:37 < dongie> The TMS320C28x is one of several fixed-point CPUs in the TMS320 family. The C28x is source-code and object-code compatible with the C27x. In addition, much of the code written for the C2xLP CPU can be reassembled to
2014-02-03T08:17:37 < dongie> run on a C28x device.
2014-02-03T08:17:37 < dongie> yeah.
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2014-02-03T08:17:37 < dongie> opinion on that AFE thing tho
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2014-02-03T08:17:44 < GargantuaSauce> Through the four-wire serial peripheral interface, or SPI™
2014-02-03T08:17:44 < GargantuaSauce> since when is spi a trademark
2014-02-03T08:17:44 < GargantuaSauce> that thing looks much more reasonable than that other weird vendor's one
2014-02-03T08:17:44 -!- mattbrejza [~mattbrejz@kryten.hexoc.com] has joined ##stm32
2014-02-03T08:17:45 < GargantuaSauce> though it's not a transparent UART bridge which is a disadvantage maybe
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2014-02-03T08:17:45 < dongie> the other vendors shit also seems to work in a bus topology?
2014-02-03T08:17:45 < dongie> vs star
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2014-02-03T08:17:45 < dongie> it said something about "other nodes on the line"
2014-02-03T08:17:45 < dongie> maybe its some LIN trash, i never done anything with that
2014-02-03T08:17:45 < dongie> loks like car trash
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--- Log closed Mon Feb 03 08:20:33 2014
--- Log opened Mon Feb 03 08:25:40 2014
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2014-02-03T08:25:44 < GargantuaSauce> (and i was wrong about not just hooking a uart to it, the spi is just for controlling the fanciness)
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--- Log opened Mon Feb 03 08:54:59 2014
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--- Log opened Mon Feb 03 09:14:38 2014
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--- Log opened Mon Feb 03 09:25:08 2014
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2014-02-03T09:37:20 < qyx_> dongie: maybe the extreme temp range -55 to 210 deg C
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2014-02-03T09:52:21 < dongie> qyx_: yeah, i noticed that
2014-02-03T09:52:59 < dongie> im getting FT800 evalboard
2014-02-03T09:53:04 < dongie> for doing some retarded GUI shit
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--- Log opened Mon Feb 03 10:44:40 2014
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--- Log opened Mon Feb 03 12:01:35 2014
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2014-02-03T12:01:55 < dongie> why the fuck did atmel discontinue that one
2014-02-03T12:01:59 < dongie> that shit would work perfectly
2014-02-03T12:02:10 < dongie> all other shit i see is like 32824498 touch points and 4x4mm 80pin BGA
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2014-02-03T12:04:02 < dongie> whats this atmel sam G shit
2014-02-03T12:04:03 < dongie> seems new
2014-02-03T12:04:13 < dongie> these devices offer unrivaled efficiency in a tiny 3 x 3 mm, 49-ball WLCSP package.
2014-02-03T12:04:28 < dongie> ARM® Cortex®-M4-based microcontroller with 256KB Flash, 64KB SRAM, 48MHz, serial communication peripherals, ADC, 49 pins or 100 pins
2014-02-03T12:04:31 < dongie> ugh what the fuck atmel
2014-02-03T12:04:37 < dongie> who the hell needs 48mhz with FPU
2014-02-03T12:05:39 < zyp> does it have FPU? :p
2014-02-03T12:05:40 < dongie> yeah
2014-02-03T12:05:44 < dongie> Increased throughput
2014-02-03T12:05:45 < dongie> Cortex-M4
2014-02-03T12:05:45 < dongie> FPU
2014-02-03T12:05:48 < zyp> right, ok
2014-02-03T12:06:18 < karlp> yeah, atmel spammed me about last week
2014-02-03T12:06:22 < karlp> "favourable ram to flash ratios"
2014-02-03T12:06:24 < dongie> yheah....
2014-02-03T12:06:31 < dongie> 96k sram 512k flash
2014-02-03T12:06:31 < dongie> zzzz
2014-02-03T12:06:36 < karlp> handwaving marketting crazyness
2014-02-03T12:07:11 < dongie> ARM Cortex-M0+ based microcontroller with 256KB Flash, 32KB SRAM, 48MHz, serial communication modules, ADC/DAC, 64 pins
2014-02-03T12:07:12 < dongie> D20 seems new too
2014-02-03T12:07:13 < dongie> i never got this atmel spam :(
2014-02-03T12:07:41 < dongie> zyp: apparently your pcba is done..
2014-02-03T12:07:44 < karlp> just type your email into more boxes
2014-02-03T12:08:29 < zyp> dongie, nice
2014-02-03T12:08:51 < dongie> thats the last thing i heard before the girl ran out of the office sharp at 5pm
2014-02-03T12:08:59 < dongie> "someone called seems done"
2014-02-03T12:09:51 < dongie> god damn so many SAMxxx series and they're all trash
2014-02-03T12:10:11 < dongie> does anyone actually use atmel ARM shit in production
2014-02-03T12:10:14 < dongie> or is it all made for next version of tarduino due
2014-02-03T12:10:39 < dongie> These MPUs include ARM Cortex®-A5-based products such as the ARM926EJ-S.-based Atmel® SAMA5D3 and AT91SAM9261 devices.
2014-02-03T12:10:46 < zyp> well, the jlink-ob on these nrf boards are atmel arm
2014-02-03T12:10:47 < dongie> someone at atmel doesnt english
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2014-02-03T12:11:31 < dongie> zyp: yueah. i emailed jlink to check prices on including their shit. apparently you can only buy like MOQ 1000 and they provide thier own choice of programmed chips
2014-02-03T12:11:38 < dongie> or else its +$10k to get .hex to flash on your own shit
2014-02-03T12:11:57 < zyp> ah, and they are HS USB
2014-02-03T12:12:05 < dongie> which ? the M4?
2014-02-03T12:12:07 < zyp> since atmel does internal HS phys
2014-02-03T12:12:18 < zyp> the one used for jlink-ob
2014-02-03T12:12:31 < dongie> o
2014-02-03T12:12:33 < dongie> HEH
2014-02-03T12:12:53 < dongie> no USB on samg51...
2014-02-03T12:12:55 < zyp> I just checked the one I have plugged in here, it's running at HS
2014-02-03T12:12:55 < dongie> how fuking uselesss.
2014-02-03T12:13:03 < dongie> impressive
2014-02-03T12:13:05 < dongie> highspeed HID device?
2014-02-03T12:13:06 < dongie> lolo
2014-02-03T12:13:19 < zyp> wat?
2014-02-03T12:13:24 < dongie> jlink is HID
2014-02-03T12:13:29 < zyp> jlink is vendor specific plain bulk
2014-02-03T12:13:32 < zyp> nothing HID in there
2014-02-03T12:13:34 < dongie> no its not?
2014-02-03T12:13:41 < dongie> o wait im thinking keil ulink
2014-02-03T12:13:43 < dongie> nvm yeah
2014-02-03T12:13:44 < dongie> it installs driver
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2014-02-03T12:16:02 < dongie> http://embedded-project.blogspot.jp/ some nice stm32 warez
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2014-02-03T12:20:09 < dongie> all closed sores tho!
2014-02-03T12:20:09 < dongie> silly italians
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--- Log opened Mon Feb 03 12:51:39 2014
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2014-02-03T12:54:38 < zyp> the pins are zigzag because they are supposed to snap into the board to keep in place before soldering,
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2014-02-03T12:56:40 < zyp> the footprints are drawed to the exact measurements in the datasheet, so it's not my fault they are tight
2014-02-03T12:57:50 < dongie> i think thats what i told them last time...
2014-02-03T12:57:50 < dongie> :)
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2014-02-03T13:01:22 < zyp> but yes, I know it's annoying, I found that too when I assembled the first prototypes
2014-02-03T13:01:23 < zyp> :p
2014-02-03T13:01:27 < dongie> hm
2014-02-03T13:01:28 < dongie> should I bother with R/C on encoder wheel
2014-02-03T13:01:28 < dongie> hm i should find old schematic i did with that
2014-02-03T13:01:29 < zyp> what kind of encoder?
2014-02-03T13:01:29 < dongie> that gook shit i linked
2014-02-03T13:01:30 < dongie> just clicky wheel
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2014-02-03T13:01:35 < zyp> ah, quadrature?
2014-02-03T13:01:37 < zyp> no need
2014-02-03T13:01:37 < dongie> yea
2014-02-03T13:01:44 < zyp> I have quadrature inputs on the hid board, I just put pullups and then run them directly
2014-02-03T13:01:47 < dongie> hmm
2014-02-03T13:01:48 < dongie> i have caps+r on this other schematic
2014-02-03T13:03:01 < dongie> 10k/0.1uf type shit
2014-02-03T13:03:01 < dongie> and that one went out to mp..
2014-02-03T13:03:01 < dongie> hmm
2014-02-03T13:03:05 < zyp> I considered using the built in comparators on F3, but shit works fine without
2014-02-03T13:04:31 < dongie> encoder? don t you just hookup to TIM_CH1/2 and use encoder mode?
2014-02-03T13:04:40 < dongie> where's comparator needed for
2014-02-03T13:05:50 < zyp> you can route the comparator outputs into timer inputs
2014-02-03T13:05:51 < dongie> oic
2014-02-03T13:06:13 < dongie> so you dont get any misclicks wo rc?
2014-02-03T13:08:26 < zyp> so instead of reading the input as digital with a huge undefined range, you can use the comparators to set the trigger point
2014-02-03T13:08:27 < zyp> well, dunno
2014-02-03T13:08:30 < dongie> ill just put rc and if it fails i'll populate them
2014-02-03T13:08:32 < dongie> i'd rather believe schematic that's in  a selling product that works :p
2014-02-03T13:08:43 < zyp> my shit is mainly designed for optical encoders, not mechanical
2014-02-03T13:08:43 < zyp> and they don't bounce ;)
2014-02-03T13:08:44 < dongie> yeah this is mechanical
2014-02-03T13:08:44 < dongie> right
2014-02-03T13:08:47 < dongie> and CHEAP
2014-02-03T13:08:48 < dongie> so its probably full of fail
2014-02-03T13:08:48 < zyp> but I don't think bounce would be a problem
--- Log closed Mon Feb 03 13:20:26 2014
--- Log opened Mon Feb 03 13:48:32 2014
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--- Log opened Mon Feb 03 14:21:08 2014
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--- Log opened Mon Feb 03 15:19:15 2014
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2014-02-03T15:38:57 < zyp> hmm, isn't libnosys supposed to implement _sbrk/_write/_read etc…?
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2014-02-03T15:39:42 < zyp> I'm getting undefined references even when linking with libnosys
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2014-02-03T15:45:04 < zyp> ok, linking order problem
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2014-02-03T16:12:50 < karlp> silly silabs cp2105 eval kit includes two db9 serial cables, but no jumpers for the 20 or so odd jumper config headers
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--- Log opened Mon Feb 03 17:03:38 2014
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2014-02-03T17:07:15 -!- dickson.freenode.net changed the topic of ##stm32 to:  STM32 | This channel is publicly logged ( http://xob.kapsi.fi/~jpa/stm32/ ) | GCC example project: https://github.com/EliasOenal/TNT_Example (Blinky lights, linkerscript, startup code and working malloc) | Join us building the ##stm32 toolchain: https://github.com/EliasOenal/TNT (now with multilib) | Wiki: http://stm32.izua.ro/wiki/Main_Page | | Don't ask to ask
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2014-02-03T17:28:47 < Laurenceb_> http://www.youtube.com/watch?v=lTabedlMTdg
2014-02-03T17:28:50 < Laurenceb_> fail academy
--- Log closed Mon Feb 03 17:34:58 2014
--- Log opened Mon Feb 03 17:35:05 2014
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2014-02-03T17:36:56 < jpa-> can i ask to ask?
2014-02-03T17:39:56 < englishman> just with compressed air it's rattling all over the place... fan sliding on the redirod shaft...
2014-02-03T17:40:23 < englishman> so, it doesnt run
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2014-02-03T17:40:58 < gxti> yes
2014-02-03T17:40:58 < gxti> you just did
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2014-02-03T17:41:29 < Laurenceb_> http://www.youtube.com/watch?v=InvF9e5kyjo
2014-02-03T17:41:35 < Laurenceb_> how to do it "pro"
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2014-02-03T17:42:52 < Steffanx> Laurenceb_ you are the pro expert..
2014-02-03T17:42:53 < englishman> ^that guy is much cooler, his pulsejet is neat
2014-02-03T17:43:39 < Steffanx> Tell me, why are ALL people in fancy videos hyper-active?
2014-02-03T17:45:06 < Steffanx> lol.. "Stuff you can get in everyday shops". Ebay.
2014-02-03T17:45:45 < gxti> your neighborhood china reseller
2014-02-03T17:47:20 < Steffanx> Yeah, but if that guy calls ebay an "every day shop" i wonder where he orders his pizza.
2014-02-03T17:47:36 < gxti> italy probably
2014-02-03T17:47:49 < karlp> so pro, I love his work
2014-02-03T17:48:13 < zyp> Steffanx, so you're ordering pizza every day?
2014-02-03T17:48:29 < Steffanx> Yeah.
2014-02-03T17:49:30 < gxti> you're not?
2014-02-03T17:50:19 < Steffanx> no zyp has a rice cooker thing. He cooks.
2014-02-03T17:50:57 < Steffanx> the rice cooker that wasnt a rice cooker iirc
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2014-02-03T17:54:53 < zyp> wasnt?
2014-02-03T17:55:04 < Steffanx> oh, it was?
2014-02-03T17:55:15 < zyp> I have a rice cooker that is a rice cooker, not sure what you are referring to
2014-02-03T17:55:35 < zyp> but I can assure you that it's capable of cooking rice, because it did it yesterday.
2014-02-03T17:55:38 < Steffanx> i am referring to something i've seen on one of the pics you once showed.
2014-02-03T17:56:20 < Steffanx> doesn't matter, rice cooker it probably was.
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2014-02-03T18:04:23 < Laurenceb_> http://hackaday.com/2014/02/02/hacking-an-escape-from-east-germany/#comments
2014-02-03T18:04:30 < Laurenceb_> "I wonder why they didn’t use an Arduino with some IMU to aid with navigation."
2014-02-03T18:04:33 < Laurenceb_> irl lolled
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2014-02-03T18:09:38 < Thorn> arduino-based oven controller
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--- Log closed Mon Feb 03 18:22:21 2014
--- Log opened Mon Feb 03 19:04:51 2014
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2014-02-03T19:19:07 < jpa-> today was so hot outside :F
2014-02-03T19:19:18 < jpa-> have to wear less clothes tomorrow
2014-02-03T19:21:07 < emeb> how hot is that?
2014-02-03T19:21:55 < jpa-> almost 0°C
2014-02-03T19:23:26 < emeb> time to put away the sweaters!
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2014-02-03T19:23:48 < englishman> I switched to the lighter toque
2014-02-03T19:23:53 < emeb> jpa-: saw the e-paper meat thermometer project. nifty.
2014-02-03T19:24:15 < jpa-> still haven't bothered to blag about if :F
2014-02-03T19:25:24 < emeb> I guess that wireless temp sensor probably won't work inside a microwave tho.
2014-02-03T19:25:40 < jpa-> i wouldn't put it there atleast..
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2014-02-03T20:43:45 < Abhishek_> Morning all
2014-02-03T20:44:24 < Abhishek_> I am facing a problem with audio playback via my hacked STM32F4Discovery board
2014-02-03T20:44:59 < Abhishek_> (hacked: Codec pins PC10 and PC12 re"wired" after trace cutting to PB3 and PB5 respectively)
2014-02-03T20:45:50 < Abhishek_> (in order to support SDIO whose pin assignments conflicted)
2014-02-03T20:47:57 < Abhishek_> the problem is: SDIO read fails (CRC) when I am transferring audio to codec so double buffered/circular playback is not possible.
2014-02-03T20:49:30 -!- Abhishek_ is now known as Abhishek
2014-02-03T21:00:57 < Abhishek> Any ideas what could be going on?
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2014-02-03T21:08:18 < bvernoux> hi
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2014-02-03T21:23:46 < Abhishek_> morning.
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2014-02-03T21:41:23 < Abhishek_> Any ideas? http://pastebin.com/SrWbtxEy
2014-02-03T21:43:15 < bvernoux> Abhishek_: have you tested it with chibios ?
2014-02-03T21:43:35 < Abhishek_> yes, I am running chibios
2014-02-03T21:43:44 < bvernoux> you have maybe a DMA conflict
2014-02-03T21:43:55 < bvernoux> SDIO is badly documented
2014-02-03T21:44:03 < Abhishek_> I2S is on DMA1 while SDIO runs on DMA2
2014-02-03T21:44:09 < bvernoux> SDIO use STM32_DMA_STREAM_ID(2, 3) on STM32F4 see STM32_SDC_SDIO_DMA_STREAM in sdc_lld.h
2014-02-03T21:44:20 < Abhishek_> yes, I checked that
2014-02-03T21:44:23 < bvernoux> ha ok
2014-02-03T21:44:49 < Abhishek_> The audio playback is fine when I am not reading from SD card
2014-02-03T21:45:25 < Abhishek_> (ie after sending a buffer via I2S I wait till transmission completes, and then read from SD card before sending another buffer for playback)
2014-02-03T21:45:43 < Abhishek_> This causes glitchy playback but works
2014-02-03T21:46:02 < Abhishek_> While double buffering playback fails due to SDIO error
2014-02-03T21:46:11 < bvernoux> seems related to a conflict strange but can be other stuff
2014-02-03T21:46:28 < bvernoux> also could be a conflict on the BUS
2014-02-03T21:46:39 < bvernoux> try to use a separated bank in SRAM
2014-02-03T21:47:01 < Abhishek_> I suspect it to be a hardware issue, maybe cut traces are interfering with transmission?
2014-02-03T21:47:07 < bvernoux> there is 3 banks on STM32F4
2014-02-03T21:47:14 < bvernoux> 112KB, 16KB and 64KB
2014-02-03T21:47:47 < bvernoux> I really doubt cut trace would interfere especially at such slow speed
2014-02-03T21:47:55 < bvernoux> or if the trace is badly cut
2014-02-03T21:48:07 < bvernoux> check it is well cut
2014-02-03T21:48:09 < Abhishek_> 48 MHz is bad?
2014-02-03T21:48:14 < bvernoux> 48Mhz is slow
2014-02-03T21:48:28 < bvernoux> problem with frrequency start at 100Mhz
2014-02-03T21:48:52 < Abhishek_> I see.
2014-02-03T21:49:00 < bvernoux> especially for digital stuff
2014-02-03T21:49:00 < bvernoux> anyway you can check you have not a strange noise with scope
2014-02-03T21:49:15 < Abhishek_> Is continuity check not enough to check trace cut properly?
2014-02-03T21:49:16 < bvernoux> I imagine you have wire smaller than 20cm too ?
2014-02-03T21:49:39 < Abhishek_> yes, it is a STM32F4 Discovery, and a breakout board
2014-02-03T21:49:56 < bvernoux> Abhishek_: I can send you my own board with full breakout ;)
2014-02-03T21:50:15 < bvernoux> you will have no any conflict as in Disco lot of peripherals are used by integrated stuff
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2014-02-03T22:42:04 < Abhishek_> 'night all
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2014-02-04T00:57:04 < jtmp> hi,   I keep getting an unknown chip id! 0xe0042000 error when trying to program using stlink.  Has anyone come across this before? It was working fine the other day
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2014-02-04T01:00:57 < dongs> you killed kenny, you bastard
2014-02-04T01:13:25 < Laurenceb> sounds like connection issue
2014-02-04T01:16:45 < jtmp> I got another dev card out, and loaded code on to it fine, then when I tried to do it a second time it failed
2014-02-04T01:17:20 < jtmp> is there some way that my firmware could be preventing the stflash tool from working?
2014-02-04T01:17:24 < dongs> yes
2014-02-04T01:17:29 < dongs> if you're fucking up pll settings
2014-02-04T01:17:39 < dongs> and overclocking the chip or killing jtag/swd on startup etc.
2014-02-04T01:17:48 < dongs> try holding down reset and connecting
2014-02-04T01:17:51 < dongs> to do erase
2014-02-04T01:17:58 < jtmp> this is a very minimal ChibiOS application
2014-02-04T01:18:02 < dongs> hold reset -> do erase -> release reset
2014-02-04T01:18:07 < jtmp> ok
2014-02-04T01:18:11 < dongs> if that works, you fucked up something on boot
2014-02-04T01:18:51 < jtmp> okay to paste a few lines here?
2014-02-04T01:18:56 < dongs> bcas.tv/paste
2014-02-04T01:19:33 < jtmp> http://bcas.tv/paste/results/YAUGNw15.html
2014-02-04T01:19:40 < jtmp> first time was holding reset, second time wasn't
2014-02-04T01:19:53 < jtmp> still can't stflash write though
2014-02-04T01:20:03 < dongs> erase worked?
2014-02-04T01:20:11 < dongs> hmm
2014-02-04T01:20:36 < jtmp> usually the erase has taken a while to complete though, this returned immediately
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2014-02-04T01:50:26 < aadamson> dongs, aint nothing fancy, but I also added the 6 pin SWD header to mate to a discovery if wanted... https://github.com/akadamson/CortexM-20-Pin-Adapter
2014-02-04T01:50:53 < aadamson> dongs would then look like - https://dl.dropboxusercontent.com/u/6730484/cortex-conn.png... approximately
2014-02-04T01:53:54 < dongs> cool
2014-02-04T01:54:31 < dongs> ya if i was using stdink i'd make that stuff. since both of my swd tools are using standard huge 20pin arm connector i didnt need extra stuff on it
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2014-02-04T02:16:39 < dongie> where chat
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2014-02-04T02:26:14 < aadamson> yeah I have a bunch of the discovery boards and they are the *cheapest* way to get SWD, so I figured why not, I'll just put a 6 pin header on it and that will allow you to just jumper over via 6pin to 6pin straight through and then you can use a discovery on a 10 pin cortex debug header.
2014-02-04T02:26:31 < aadamson> I got one of the olmex adapters, but that just inspired me to so my own :)
2014-02-04T02:29:07 < dongs> yep
2014-02-04T02:30:14 < dongs> i didnt know olimex shit existed so I made my own a while ago and stuck it into pcb panel for free so I have a bag of blank boards with 10pin cortex>20pin dip on it that will probably last me for a while..
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2014-02-04T02:33:47 < aadamson> hehe... there ya go!
2014-02-04T02:33:56 < aadamson> any progress on the gimbal?
2014-02-04T02:34:01 < aadamson> sri gimbal controller?
2014-02-04T02:34:09 < dongs> i think pcbs are probably done,  i dunno
2014-02-04T02:34:57 < aadamson> ah, cool... we'll I ping you on that later in the week... no worries on timing, I know you are busy
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2014-02-04T05:08:02 < dongs> who killed chats
2014-02-04T05:08:22 < dongs> maybe it was the fox
2014-02-04T05:08:38 < emeb_mac> DDOS
2014-02-04T05:08:44 < dongs> NTP reflection
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2014-02-04T06:53:09 < gxti> microxplorer is almost useful, but not. was thinking about making some kind of gpio config generator, figured i'd check if anyone else was dumb enough to do it first.
2014-02-04T07:02:08 < dongs> eh
2014-02-04T07:02:21 < dongs> i just use it to visualize ports
2014-02-04T07:02:25 < dongs> does it export to .C or something?
2014-02-04T07:02:27 < dongs> i never botherd with that
2014-02-04T07:04:43 < gxti> yeah it poops out some awful code using stdperiph of course
2014-02-04T07:05:30 < gxti> i really just wanted something to do GPIOA->MODER = 0xDICKS instead of wasting flash pretending it's abstract
2014-02-04T07:06:20 < gxti> plus do clock enables, maybe some peripheral configuration, named macros for gpio pins, etc.
2014-02-04T07:06:29 < dongs> pft
2014-02-04T07:06:43 < gxti> all the boring shit
2014-02-04T07:06:58 < emeb_mac> I'm with dongs - just use it to see if you can get all the I/O needed
2014-02-04T07:07:24 < emeb_mac> handy to figure out that I couldn't get everything I wanted in the 100-pin 407
2014-02-04T07:07:32 < emeb_mac> had to bump up to the 144
2014-02-04T07:07:47 < emeb_mac> stupid AF muxes. grumble
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2014-02-04T07:22:10 < Abhishek_> I hacked my STM32F4Discovery to get access to SDIO and I2S by shifing PC10 and PC12 to PB3 and PB5. But now can't get them both to work on the same time. Any ideas?
2014-02-04T07:22:31 < Abhishek_> (hacked through cut traces)
2014-02-04T07:23:19 < dongs> isnt PB5 part of jtag?
2014-02-04T07:23:25 < dongs> you should disable jtag and only leave SWD on
2014-02-04T07:24:04 < dongs> PB3 is
2014-02-04T07:24:05 < dongs> JTDO
2014-02-04T07:24:18 < dongs> so you should disable that :)
2014-02-04T07:24:56 < dongs> oh hm.
2014-02-04T07:25:00 < dongs> on F4, thats just AF setting.
2014-02-04T07:26:07 < Abhishek_> yes, I did that. Problem is, I still can't access SDIO when I send stuff to the codec
2014-02-04T07:26:18 < Abhishek_> CRC check fails on received data
2014-02-04T07:26:51 < Abhishek_> when I2S is not running, SDIO works fine
2014-02-04T07:27:03 < gxti> i need to relearn c++...
2014-02-04T07:32:45 < Abhishek_> dongs: This works, but that doesn't: http://pastebin.com/LFKgF6uU
2014-02-04T07:33:27 < dongs> Abhishek_: i duno, DMA buffers wrong or something, who knows?
2014-02-04T07:34:21 < dongs> why dont you format your code?
2014-02-04T07:34:28 < dongs> maybe you'll find bugs faster
2014-02-04T07:34:33 < dongs> if it doesnt look like copypasted clusterfuck
2014-02-04T07:35:01 < dongs> uif you have spaces between foo ? bar why no space between temp / foo ?
2014-02-04T07:35:59 < Abhishek_> That's a code I wrote a year ago, combined with what I wrote a few days ago
2014-02-04T07:37:46 < Abhishek_> http://pastebin.com/ZaPs5r63, codingstyle fixed
2014-02-04T07:38:08 < dongs> wf_read and f_read whats the diff?
2014-02-04T07:38:26 < Abhishek_> it uses a FatFS worker thread, never mind
2014-02-04T07:39:48 < Abhishek_> the point is I2S transfers and SDIO transfers are somehow interfering when they occur together, but if only one happens, it works
2014-02-04T07:40:08 < Abhishek_> That is all I can make out
2014-02-04T07:41:37 < Abhishek_> of this shit.
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2014-02-04T07:42:13 < dongs> using same DMA channel?
2014-02-04T07:42:41 < Abhishek_> no, SDIO is on DMA2, I2S on DMA1
2014-02-04T07:43:46 < dongs> hmpf.
2014-02-04T07:45:10 < Abhishek_> *afk
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2014-02-04T08:03:39 < upgrdman> what would it be used for?
2014-02-04T08:04:39 < upgrdman> what do you tx/rx at just about audible frequencies?
2014-02-04T08:04:43 < upgrdman> above*
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2014-02-04T08:14:26 < dongs> upgrdman: sounds like powerline clock crap
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2014-02-04T08:19:20 < upgrdman> o
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2014-02-04T08:20:17 < dongs> http://www.digikey.com/product-search/en/rf-if-and-rfid/rf-die-products/3540012?k=CME8000
2014-02-04T08:20:20 < dongs> haha
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2014-02-04T09:02:04 < Thorn> aren't dp&dm supposed to be a twisted pair in a usb cable?
2014-02-04T09:03:03 < Thorn> I gutted a 3 m long chinese usb cable and it's just 4 wires, no twisted pair there
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2014-02-04T09:09:16 < dongie> no
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2014-02-04T10:58:31 < dongie> http://www.chipworks.com/components/com_wordpress/wp/wp-content/uploads/2013/11/thumb-32.jpg
2014-02-04T10:58:34 < dongie> ST font
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2014-02-04T11:47:55 < kuldeepdhaka> is it possible to build a capacitance reading meter using stm32 touch sensor (capacitive sensor)?
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2014-02-04T11:50:00 < Cyric> i am trying to migrate from the F version to the L version of the STM32 and i noticed that the API are a little bit different... so i am modifying my code accordingly..
2014-02-04T11:50:06 < Cyric> now i have a question
2014-02-04T11:51:58 < Cyric> when i set the USART Rx pin is it just GPIO_PIN_In?
2014-02-04T11:52:06 < Cyric> no alternate function set up?
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2014-02-04T11:56:06 < dongie> on F1 it is
2014-02-04T11:56:09 < dongie> dunno about L1
2014-02-04T11:56:15 < dongie> does L1 have same AFIO stuff as F2/F4?
2014-02-04T11:56:30 < dongie> if its same as F2/F4 then you probably need to set both to AF and set mux accordingly
2014-02-04T12:00:22 < Cyric> Actually i am looking at the old code and there is no setting there... the RX pin is only set as 	gpiousart2.GPIO_Mode = GPIO_Mode_IN_FLOATING;
2014-02-04T12:00:53 < dongie> yes
2014-02-04T12:01:02 < dongie> check L1 stdperiphlib samples for uart
2014-02-04T12:01:12 < dongie> that should give you a good idea if api changed or not
2014-02-04T12:01:19 < PaulFertser> Cyric: GPIO_Mode = GPIO_Mode_AF
2014-02-04T12:01:28 < dongie> PaulFertser: on L1?
2014-02-04T12:01:47 < PaulFertser> dongie: yes, on l152 here
2014-02-04T12:01:55 < PaulFertser> Cyric: also, GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2) or something like that
2014-02-04T12:02:20 < PaulFertser> Both for Tx and Rx
2014-02-04T12:02:37 < dongie> ok, so its F4-style AFIO shit.
2014-02-04T12:02:59 < Cyric> but now i am asking myself why the old code is working when the RX pin was only set as IN_floating
2014-02-04T12:03:09 < Cyric> no AFIO at all
2014-02-04T12:03:23 < Cyric> only the TX pin had the instruction gpiousart.GPIO_Mode = GPIO_Mode_AF_PP;
2014-02-04T12:03:41 < PaulFertser> There's no AF_PP for L1 at all?
2014-02-04T12:04:03 < Cyric> yes but that is for the TX
2014-02-04T12:04:06 < Cyric> pin
2014-02-04T12:04:09 < Cyric> not RX...
2014-02-04T12:04:26 < Laurenceb> http://regmedia.co.uk/2014/02/04/applications_sm.jpg
2014-02-04T12:04:29 < Laurenceb> lolling
2014-02-04T12:04:33 < dongie> goox
2014-02-04T12:04:37 < dongie> wats this
2014-02-04T12:04:46 < dongie> oh fuck
2014-02-04T12:04:48 < dongie> is that best ko rea lunix
2014-02-04T12:05:30 < Cyric> gpiousart.GPIO_Mode = GPIO_Mode_AF;
2014-02-04T12:05:30 < Cyric> gpiousart.GPIO_OType= GPIO_OType_PP;
2014-02-04T12:05:39 < Cyric> this is TX for L1 series
2014-02-04T12:06:13 < Cyric> so there is the AF there
2014-02-04T12:06:26 < dongie> Cyric: read what PaulFertser said.
2014-02-04T12:07:11 < PaulFertser> Cyric: you need to use AF for both Tx and Rx, use PinAFConfig for both as well. Other parameters just leave as default the way StructInit configures them.
2014-02-04T12:07:27 < Cyric> ok thanks
2014-02-04T12:07:40 < Cyric> i will do that
2014-02-04T12:07:47 < PaulFertser> Cyric: btw, why not libopencm3? It has support for l1 now
2014-02-04T12:07:54 < PaulFertser> ST's library stinks
2014-02-04T12:08:28 < Cyric> becasuse i am a newbie
2014-02-04T12:08:38 < Cyric> and i am pure hardware electronic guy...
2014-02-04T12:09:16 < Cyric> and my knowledge of programming sucks.
2014-02-04T12:09:36 < PaulFertser> Cyric: please take a look at libopencm3, it's a decent library being developed by sane people.
2014-02-04T12:09:54 < Cyric> ok good
2014-02-04T12:10:07 < Cyric> is that compatible with coide?
2014-02-04T12:11:11 < PaulFertser> I don't really know but I do not see why not (if you do not count specific checkboxes to include or exclude st's header files).
2014-02-04T12:11:45 < dongie> ..
2014-02-04T12:11:58 < dongie> comeon.
2014-02-04T12:12:18 < dongie> if libopencm3 didnt suck, maybe people would use it
2014-02-04T12:12:30 < PaulFertser> People do use it.
2014-02-04T12:12:38 < kuldeepdhaka> ^ yup
2014-02-04T12:14:01 < PaulFertser> Also, it faciliates porting between different cortex-m devices (not ST's only).
2014-02-04T12:14:46 < kuldeepdhaka> its LGPL also. :)
2014-02-04T12:15:26 < Cyric> ok so i have to restart from the beginning and rewrite my code according with the new instructions.. is that correct?
2014-02-04T12:15:26 < PaulFertser> Yes, unlike ST's shit that prohibits using all of their code on any non-ST's uC.
2014-02-04T12:15:47 < trepidaciousMBR> A lot of the code wouldn't be any use on another MCU though
2014-02-04T12:15:54 < trepidaciousMBR> Given it is specific to ST peripherals
2014-02-04T12:15:56 < PaulFertser> Cyric: you have a choice, you can take a look at libopencm3-examples repositories and see for yourself if you like it or not.
2014-02-04T12:16:07 < PaulFertser> trepidaciousMBR: yes, but some might come handy.
2014-02-04T12:16:32 < trepidaciousMBR> PaulFertser: As long as it works and you don't want to port it, the licence isn't much of a problem IMHO
2014-02-04T12:16:51 < trepidaciousMBR> The code itself may be more of a problem, it doesn't seem to be the most robust and correct code ever written
2014-02-04T12:17:12 < Cyric> well since i am at the really beginning.. i am looking the esiest and fastest way to programm the STM32L1
2014-02-04T12:17:32 < PaulFertser> trepidaciousMBR: I agree
2014-02-04T12:17:41 < trepidaciousMBR> Cyric: If you want my enormously subjective opinion, ChibiOS :)
2014-02-04T12:17:51 < trepidaciousMBR> Cyric: Although I haven't used it on an L1
2014-02-04T12:17:57 < PaulFertser> Cyric: imho using a sane library is part of the easiest way but, well, tastes differ.
2014-02-04T12:20:00 < Cyric> i know... why cannot have libraries such as ARDUINo...  Serial.begin (9600)  .. that is it
2014-02-04T12:20:05 < Cyric> :D
2014-02-04T12:20:23 < dongie> why not just use arduino
2014-02-04T12:20:25 < dongie> if thats waht you want
2014-02-04T12:20:43 < Cyric> i want something more powerfull and with more flexibility
2014-02-04T12:20:48 < PaulFertser> Libraries like arduino provide means for mindless copy-pasting without thinking. That might help initially but then will hold you back.
2014-02-04T12:21:01 < Cyric> yes i know
2014-02-04T12:21:11 < Cyric> for this reason i want to use the STM32
2014-02-04T12:21:14 < Cyric> anyway
2014-02-04T12:22:15 < Cyric> i will use these libopenM3 library
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2014-02-04T12:23:38 < Cyric> or at least i will try to use it
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2014-02-04T12:25:55 < zyp> hmm, I wonder how to handle configuration over HID
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2014-02-04T12:27:03 < zyp> I could map every option to a feature usage, but that sounds like a lot of work for no point
2014-02-04T12:28:35 < zyp> I could multiplex stuff by having a usage for selecting option and a usage for accessing the selected value
2014-02-04T12:30:10 < zyp> would be easy to do a config array like that, but that would force me to use a given size for each option
2014-02-04T12:32:25 < zyp> or I could make some stuff to just send the entire config as a binary blob that gets mapped to a struct, but that will be a hassle to handle once the config is large enough to not fit in a single report (~60 bytes)
2014-02-04T12:32:44 < zyp> any thoughts?
2014-02-04T12:32:56 < Abhishek_> http://forum.chibios.org/phpbb/viewtopic.php?f=16&t=1683, any thoughts?
2014-02-04T12:33:16 < dongie> lol @that guy saying same shit i did
2014-02-04T12:33:27 < dongie> you should probly have wwritten that.
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2014-02-04T12:39:27 < Robint91_wrk> hi all
2014-02-04T12:39:33 < dongie> sup blogspehre
2014-02-04T12:40:02 < Robint91_wrk> sup dongie
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2014-02-04T12:42:18 < dongie> routing workboard that needs to be done before 9pm
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2014-02-04T13:01:15 < dongie> whats everyones favorite rtc xtal
2014-02-04T13:01:16 < dongie> smd
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2014-02-04T13:02:04 < dongie> http://www.digikey.com/product-detail/en/CPFBZ-A2C5-32.768KD12.5/370-1058-2-ND/3748487 thjis kinda trash seems popular
2014-02-04T13:02:07 < dongie> i think ive seen it on boards
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2014-02-04T13:04:20 < dongie> 3.2x1.5 2pin also seems to be  popular
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2014-02-04T13:23:38 < zyp> I've also seen that shit you pasted
2014-02-04T13:23:47 < zyp> dunno otherwise, never used one myself
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2014-02-04T14:15:29 < dongie> http://bcas.tv/paste/results/ygYcoC23.html ....
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2014-02-04T14:32:15 < Thorn> High-/full-speed cable consists of a signaling twisted pair, VBUS, GND, and an overall shield. (usb 2.0 spec section 6.4)
2014-02-04T14:32:36 < Thorn> twisted pair is required.
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2014-02-04T14:38:09 < karlp> yeah, and devices are only allowed to draw X mA, and they're required to go to suspend mode and draw only Y uA too.
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2014-02-04T16:32:24 < shanrei> anybody who can recommend a toolchain setup for the stm32f429i-discovery in linux?
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2014-02-04T16:37:59 < jpa-> shanrei: https://launchpad.net/gcc-arm-embedded
2014-02-04T16:38:49 < shanrei> yep, got that
2014-02-04T16:39:02 < dongie> then youre done
2014-02-04T16:39:11 < shanrei> any recommendations then for the ld files?
2014-02-04T16:39:25 < dongie> there's probably  some trash in stdperiphlib examples
2014-02-04T16:39:27 < dongie> have you looked there?
2014-02-04T16:39:30 < dongie> or in CMSIS etc.
2014-02-04T16:39:55 < jpa-> depends on what you want to run on it.. for stdperiph, use stdperiph's ld:s.. for any RTOS they usually come with examples.. for bare metal pick some crap from google or write your own
2014-02-04T16:40:16 < dongie> or just use coocox or keil or some IDE that isn't a piece of shit
2014-02-04T16:40:18 < shanrei> yeah, tried the one from atollic as i had done some little projects using that file...but it seems i couldn't get it to work..
2014-02-04T16:41:28 < shanrei> i'm trying the bare metal path...and i think it's driving me crazy...
2014-02-04T16:43:46 < shanrei> i'm testing code in keil which i wrote in linux (which didn't quite work) just to see if i get the same results...and i found out that what didn't work in linux now works using keil...
2014-02-04T16:43:57 < shanrei> tsk tsk...
2014-02-04T16:45:32 < dongie> of course.
2014-02-04T16:45:39 < dongie> but anyway uh
2014-02-04T16:45:45 < dongie> download 429i examples
2014-02-04T16:45:50 < dongie> take a look at sample project
2014-02-04T16:45:55 < dongie> copy their .ld / .startup stuff
2014-02-04T16:46:02 < dongie> make a new proj with those
2014-02-04T16:46:03 < dongie> should work.
2014-02-04T16:47:58 < shanrei> done all that. i'll do it again coz i may have i missed something.
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2014-02-04T16:48:53 < shanrei> i'm just getting started with this 429i, so for now, i'll just have to stick with keil
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2014-02-04T16:57:13 < dongie> yep
2014-02-04T16:57:15 < dongie> shit just wokrs
2014-02-04T17:04:42 < Steffanx> Anyone here knows a (not to expensive) and usable module to add a simple wifi connection to a project?
2014-02-04T17:05:05 < Steffanx> cc3000: not usable, hi-link: meh has  known backdoors...
2014-02-04T17:05:19 < effractur> WiFly?
2014-02-04T17:05:49 < zyp> carambola?
2014-02-04T17:06:05 < effractur> but do you what to controll the whole stack
2014-02-04T17:06:08 < effractur> or just serial over tcp
2014-02-04T17:06:21 < Steffanx> Doesnt really matter.
2014-02-04T17:07:08 < effractur> wifly is ~30 euros
2014-02-04T17:07:37 < zyp> carambola-2 is 19 euros
2014-02-04T17:08:04 < jpa-> Steffanx: why cc3000 is not useable?
2014-02-04T17:08:11 < effractur> a without breakoutboard wifly is i think also ~19
2014-02-04T17:08:21 < Steffanx> Nah, its not that great. Has bugs and seems to be abandoned by TI
2014-02-04T17:09:07 < Steffanx> Bugs/race condition in the lib. they provide and the on-chip stack is not "perfect"
2014-02-04T17:09:19 < Steffanx> *race conditions
2014-02-04T17:09:48 < zyp> the neat part about the carambola is how it's a full blown linux platform, so you don't even have to dick around with shitty limited embedded ip stacks
2014-02-04T17:10:21 < zyp> and it's still in a fair price range
2014-02-04T17:12:21 < Steffanx> jpa-, its just a hobby bobby project, but it has to be kind of reliable. Not: I'll use this module see if it will ever get stuck in some endless loop or unresponsive get a cc3000
2014-02-04T17:12:32 < Steffanx> -get
2014-02-04T17:12:38 < jpa-> didn't know it was so shitty
2014-02-04T17:12:52 < Steffanx> *or get an unresponsive cc3000
2014-02-04T17:14:30 < Steffanx> Of course it doesn't say everything, but read a few posts on the e2e forum. Quite a few say they would never ever ever use it in a commercial project.
2014-02-04T17:22:31 < Steffanx> jpa-, anyway not usable isn't the right description, but is not reliable enough for me.
2014-02-04T17:29:57 < Steffanx> Would be nice to use some random cheap-ass module of a nintendo ds(i) or something, but atheros and co aren't really into releasing datasheets/register info.
2014-02-04T17:38:13 < karlp> I'd totally go with ane xisting linux som rather than trying to bolt wifi on via a uart or something
2014-02-04T17:38:26 < karlp> carambola2/asiarf/youpickem
2014-02-04T17:39:03 < karlp> Steffanx: what's hi-link?
2014-02-04T17:40:06 < Steffanx> http://wiki.openwrt.org/toh/hilink/hlk-rm04 that.
2014-02-04T17:40:20 < jpa-> though if power usage is a concern then a linux board may not be optimal
2014-02-04T17:40:45 < Steffanx> that and i need more io that just the few the carambola(2) has
2014-02-04T17:41:02 < Steffanx> oh, it has 23GPIOs. but still.
2014-02-04T17:41:11 < karlp> what are these "known backdoors" you were tlaking about?
2014-02-04T17:41:22 < karlp> if power usage is a concern, what are you doing looking at 802.11?
2014-02-04T17:42:00 < Steffanx> Its the only easy way to connect to the internet.. wireless.
2014-02-04T17:42:02 < karlp> you can slave a uC off a linux SoM and get working wifi a lot easier than the cc3000 slaved off a uC I would say
2014-02-04T17:42:22 < Steffanx> Even when its just in a local network )
2014-02-04T17:42:56 < jpa-> Steffanx: if you don't need fast IO, just slap on a port extender to i2c or spi
2014-02-04T17:43:09 < jpa-> otherwise put a microcontroller for the fast stuff
2014-02-04T17:44:26 < karlp> Steffanx: you got a link for these "known backdoors" ?
2014-02-04T17:45:10 < Steffanx> I have to look into that karlp. It something i came across while googling a bit.
2014-02-04T17:46:42 < karlp> once you've put a knew uboot on and a new build of openwrt, you'd be talking about backdoors from ralink...(or is it mediatek now?)
2014-02-04T17:47:11 < Steffanx> oh, im talking about the original fw. not openwrt
2014-02-04T17:49:41 < Steffanx> i wasn't really looking into a solution with linux, so i didn't look into openwrt either.
2014-02-04T17:50:03 < effractur> the MRF24WB0MA ?
2014-02-04T17:53:44 < karlp> I expect that will be quite poorly supported,
2014-02-04T17:53:54 < karlp> and probably a long errata list,
2014-02-04T17:53:56 < Steffanx> because microchip?
2014-02-04T17:54:08 < karlp> because the other mrf family chips have been...
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2014-02-04T17:54:36 < Steffanx> the errata is quite short actually.
2014-02-04T17:54:41 < karlp> hah,
2014-02-04T17:54:52 < karlp> the errata sheet for the mrf24j40 was short too,
2014-02-04T17:54:57 < karlp> until they admitted how much shit was busted
2014-02-04T17:55:03 < Steffanx> heh.
2014-02-04T17:55:11 < effractur> wthere is even a arduino lib :D
2014-02-04T17:55:12 < effractur> ;p
2014-02-04T17:55:15 < karlp> but hey, maybe they really did get it right .)
2014-02-04T17:55:34 < Steffanx> Is there any solution at all that is semi-low power + usable?!
2014-02-04T17:55:50 < effractur> do not use 802.11
2014-02-04T17:55:51 < effractur> ;p
2014-02-04T17:55:53 < karlp> :)
2014-02-04T17:55:57 < effractur> BT 4.0 ulv
2014-02-04T17:55:58 < effractur> ?
2014-02-04T17:56:49 < Steffanx> http://nl.mouser.com/new/Murata/murataSN8200/ that must be wonderful great ( except for broadcom??)
2014-02-04T17:56:52 < Steffanx> it has an stm32 inside
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2014-02-04T17:58:08 < karlp> also, 25euro for bare module, and you'll need tools?
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2014-02-04T17:59:28 < Steffanx> Tools for what?
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2014-02-04T18:01:51 < Steffanx> Not sure if the API is open source..
2014-02-04T18:02:06 < karlp> that's what I meant, for the murata module
2014-02-04T18:02:15 < karlp> but, I'd love to hear about your experiences with it :)
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2014-02-04T18:03:38 < Steffanx> long registration forms scare me off..
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2014-02-04T18:07:42 < Steffanx> lol karlp, it's a no go
2014-02-04T18:07:52 < Steffanx> "Due to export compliance rules, we can only approve registrations which use corporate e-mail addresses. Free email addresses such as gmail and Yahoo will be not be allowed to register for the Broadcom Community."
2014-02-04T18:08:22 < gxti> looooool
2014-02-04T18:08:33 < Steffanx> They also wanted to know everything except my credit card number and manually check what i entered.
2014-02-04T18:10:46 < Steffanx> Is providing free downloads of some sdk to other countries "export" ?!
2014-02-04T18:15:10 < gxti> yes
2014-02-04T18:15:19 < gxti> welcome to law
2014-02-04T18:15:32 < gxti> where the rules are made up and common sense doesn't matter
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2014-02-04T18:25:12 < Steffanx> Would almost move to just some wired ethernet.
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2014-02-04T18:31:22 < zyp> why is low power a goal if wired ethenet is almost an option
2014-02-04T18:31:23 < zyp> ?
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2014-02-04T18:37:28 < beaky> hello
2014-02-04T18:37:39 < beaky> how do i get started with the stm32f4 discovery
2014-02-04T18:37:59 < madist> beaky: plug in the small end of the USB cable into the discovery board and the big end into the computer
2014-02-04T18:38:26 < beaky> any softwares i must install
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2014-02-04T18:38:38 < beaky> like the arduino ide must be installed for arduino
2014-02-04T18:38:44 < beaky> is there an stm32 ide?
2014-02-04T18:39:26 < gnomad> sadly, there is not much in the way of "getting started for newbies" documentation for the stm32....
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2014-02-04T18:39:59 < beaky> aww no worries I will manage somehow :D
2014-02-04T18:40:07 < __rob> Hello, I was looking for a bit of advice. I have a couple of STM32 cortex-m0 parts I wanted to get started with. The first thing I was wondering was whether there is any benefit using a JTAG programmer over the ST-Link V2 SWD interface - before I go buy one or the other
2014-02-04T18:40:50 < __rob> as long as I can program and debug with the ST-Link, the board space saving is a plus
2014-02-04T18:41:55 < effractur> swd is the standard for arm
2014-02-04T18:43:08 < __rob> right, so thats why I see no mention of JTAG in my datasheet ?
2014-02-04T18:46:40 < __rob> my other question is what is SWO on here ( http://goo.gl/hKWLwp )
2014-02-04T18:46:52 < zyp> swo is trace
2014-02-04T18:46:52 < karlp> no swo on cortex m-0, so you can mostly forget about it
2014-02-04T18:47:02 < zyp> ah, true
2014-02-04T18:47:05 < __rob> I have SWCLK and SWDAT (which I assume maps to SWDIO on that diagram)
2014-02-04T18:47:27 < zyp> yes
2014-02-04T18:47:30 < __rob> so does that mean I cannot debug ?
2014-02-04T18:47:33 < __rob> without SWO?
2014-02-04T18:47:37 < zyp> no
2014-02-04T18:47:45 < zyp> swo is only used for trace
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2014-02-04T18:49:04 < zyp> anyway, that pinout is outdated
2014-02-04T18:49:09 < zyp> http://infocenter.arm.com/help/topic/com.arm.doc.faqs/attached/13634/cortex_debug_connectors.pdf
2014-02-04T18:49:30 < zyp> the 1.27mm pitch 10-pin connector is the new standard
2014-02-04T18:53:13 < __rob> great, thanks
2014-02-04T18:54:01 < __rob> is there a cheap generic SWd programmer that works with other vendors parts ?
2014-02-04T18:54:08 < karlp> yeah, stm32 disco boards
2014-02-04T18:54:21 < karlp> but you'll need software supporting those targets,
2014-02-04T18:54:27 < karlp> which is more of an issue.
2014-02-04T18:54:30 < zyp> (openocd)
2014-02-04T18:54:32 < karlp> openocd supports a few, but not all
2014-02-04T18:54:41 < karlp> but it grows, especially when people buy new parts :)
2014-02-04T18:55:03 < zyp> I like the blackmagic probe
2014-02-04T18:55:10 < __rob> id swd is the arm standard why is it the ST-Link V2 is only for STM parts ?
2014-02-04T18:55:11 < zyp> but I'm not sure it goes as cheap
2014-02-04T18:55:15 < gnomad> yeah, you *definitely* want to learn on one of the Discovery boards.
2014-02-04T18:55:34 < zyp> __rob, that's just a software thing
2014-02-04T18:55:40 < karlp> stlinkv2 isn't, they just don't bother mentioning anything
2014-02-04T18:55:46 < karlp> and the software that st provides only supports st parts
2014-02-04T18:55:56 < gnomad> your next choice is whether you want to use a vendor-supplied toolchain or roll your own with gcc and openocd/bmp/etc....
2014-02-04T18:56:11 < madist> *not* recommended for a beginner
2014-02-04T18:56:17 < __rob> ok, but with openocd it should work ?
2014-02-04T18:56:28 < __rob> I will use codesourcery or something
2014-02-04T18:57:10 < __rob> the docs said the stm standard library is fully ansi c compatible so should compile with anything?
2014-02-04T18:57:43 < zyp> don't use codesourcery
2014-02-04T18:57:46 < zyp> it's shit
2014-02-04T18:57:55 < __rob> ok, I'm open to recomendations :)
2014-02-04T18:58:04 < zyp> https://launchpad.net/gcc-arm-embedded/
2014-02-04T18:58:05 < madist> buy the discovery board.
2014-02-04T18:58:44 < zyp> if you're going with any kind of gcc toolchain, that is the one you want unless you have a really good reason you want to use something different
2014-02-04T18:59:15 < zyp> and unless you really know what you're doing, you don't :)
2014-02-04T18:59:22 < gnomad> if you plan to use codesourcery, just look for the codesourcery tutorial.
2014-02-04T18:59:50 < gnomad> I am pretty sure I have seen one or two codesourcery tutorials.
2014-02-04T19:00:05 < zyp> last time I checked, codesourcery were horribly outdated
2014-02-04T19:00:10 < gnomad> Not a fan of GUI-IDEs myself, so I never went further.
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2014-02-04T19:01:39 < __rob> madist, I don't want a discovery board as I want to swap out a pic32 for this cortex m0, and I have specific hardware I want to wire up to it
2014-02-04T19:01:53 < madist> -.-
2014-02-04T19:01:59 < karlp> __rob the discovery board comes with the stlinkv2 on it,
2014-02-04T19:01:59 < gnomad> KISS!!!!
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2014-02-04T19:02:19 < gnomad> learn on a dev board and *then* get fancy!
2014-02-04T19:02:24 < karlp> it's cheaper than buying it standalone, and you get some known working hardware to test your software on.
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2014-02-04T19:02:44 < karlp> if you want to go straight to soldering this prechosen m0 on to your own board, it sounds like you shouldn't need much help :)
2014-02-04T19:02:45 < beaky> wow even blinking a led on an stm32 is a doozy
2014-02-04T19:02:46 < __rob> too late, bought one for of these
2014-02-04T19:02:47 < __rob> http://goo.gl/lGZHhh
2014-02-04T19:02:55 < __rob> gotta be worht a try for $5
2014-02-04T19:02:58 < __rob> spent more on lunch
2014-02-04T19:03:05 < karlp> amny chance you could paste the original links instead of shortened ones?
2014-02-04T19:03:12 < __rob> sure
2014-02-04T19:03:14 < __rob> http://www.ebay.com/itm/ST-Link-V2-Mini-Metal-Shell-STM8-STM32-Programmer-Emulator-Downloader-TN2F-/281228450685?pt=LH_DefaultDomain_0&hash=item417a859b7d
2014-02-04T19:03:21 < Steffanx> nah, zyp it wasn't a serious option, the wired ethernet :P
2014-02-04T19:03:29 < zyp> huh, that's cute
2014-02-04T19:03:38 < beaky> first you have to power up the gpio peripheral, then you have to specify what pins you need to be the gpios, then you have to set the io direction, then you can set the register which determines HIGH on the pin with the LED.
2014-02-04T19:03:39 < zyp> wonder if it would run the bmp firmware
2014-02-04T19:03:44 < Steffanx> but it looks like they dont want me to use wifi
2014-02-04T19:04:07 < karlp> wonder if swo works on that thing :)
2014-02-04T19:04:09 < zyp> shame it doesn't have a standard pinout
2014-02-04T19:04:32 < emeb> lol
2014-02-04T19:04:37 < emeb> looks like nail polish
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2014-02-04T19:04:56 < karlp> yeah, putting the modern 1.27mm header woudl have been nice
2014-02-04T19:05:12 < emeb> after getting openocd up & running w/ the disco boards I'm a big fan of that approach.
2014-02-04T19:05:15 < __rob> I can make an adapter to a standard header tho
2014-02-04T19:05:33 < zyp> emeb, not the bmp?
2014-02-04T19:05:42 < emeb> zyp: bmp of course.
2014-02-04T19:06:03 < emeb> but for talking to disco boards w/o a mess of wires openocd rules
2014-02-04T19:06:07 < Rickta59> openocd doesn't really support the cortex-m0 stuff
2014-02-04T19:06:21 < zyp> what stuff?
2014-02-04T19:06:22 < Rickta59> unless you are using the stlinkv2 hla
2014-02-04T19:06:34 < Rickta59> debugging
2014-02-04T19:06:43 < karlp> Rickta59: you mean, oocd doens't have bitbanging swd support very well you mena?
2014-02-04T19:06:50 < karlp> not really a cm0 issue per se
2014-02-04T19:07:02 < zyp> emeb, fair enough
2014-02-04T19:07:08 < Rickta59> i've used the stlink to program an nxp cortex-m0
2014-02-04T19:07:23 < zyp> emeb, one day I'll just reflash all my discovery boards to run bmp instead
2014-02-04T19:07:27 < Rickta59> however it didn't want to let me debug and that seemed to be an issue with openocd
2014-02-04T19:07:42 < emeb> zyp: sounds like more trouble than it's worth. :)
2014-02-04T19:07:53 < Rickta59> and yeah once bmp was on the discovery board it works great
2014-02-04T19:07:56 < zyp> not if you only have to do it once
2014-02-04T19:08:02 < Miek> what are the advantages of the bmp over an stlink? i've not used it
2014-02-04T19:08:06 < karlp> probably just still catching up with users, there's been a pile of cortex M patches in git master since the 0.7 release
2014-02-04T19:08:15 < zyp> Miek, it's self contained
2014-02-04T19:08:28 < zyp> you don't need any middleware between gdb and the usb device
2014-02-04T19:08:32 < emeb> talks directly to gdb
2014-02-04T19:08:33 < Rickta59> BMP exposes itself as a CDC ACM device so you don't need any host drivers other than that
2014-02-04T19:08:54 < Rickta59> shows up as a COM/tty port
2014-02-04T19:09:02 < Miek> ah cool
2014-02-04T19:09:03 < Rickta59> brilliant
2014-02-04T19:09:07 < karlp> and theoretically, it can do faster SWO output :) (the only thing I woudl care about personally)
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2014-02-04T19:10:01 < zyp> the thing I care about is that I can get shit done without wrestling with the tools to get them running
2014-02-04T19:10:03 < emeb> and bmp has a secondary serial port - handy for debug printfs
2014-02-04T19:10:24 < emeb> if you don't want to fart around getting swo working...
2014-02-04T19:11:05 < Miek> yeah, i currently have a dirty hack in gdb to break on a print function, print the arguments and continue
2014-02-04T19:11:18 < zyp> why not use semihosting?
2014-02-04T19:11:21 < beaky> can i use the arduino ethernet shield with my stm32 for ethernet
2014-02-04T19:11:24 < zyp> which does just that, in a standardized way
2014-02-04T19:11:47 < Miek> zyp: not yet heard of it :p
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2014-02-04T19:13:21 < zyp> http://cgit.jvnv.net/laks/tree/util/semihosting.h?h=scheduler_improvements <- the interface looks something like this
2014-02-04T19:13:52 < zyp> and is supported by a bunch of debuggers and other stuff
2014-02-04T19:13:57 < Rickta59> easier to just set a breakpoint with a display
2014-02-04T19:14:18 < zyp> not when this is already implemented by your tools :)
2014-02-04T19:14:32 < Rickta59> i tried this from openocd and it was painfully slow
2014-02-04T19:14:59 < karlp> workd just fine in oocd last I was using it,
2014-02-04T19:15:17 < karlp> just found it didn't work so well with usb
2014-02-04T19:15:21 < zyp> if you use gcc-arm-embedded and link with librdimon you'll get stdout routed to semihosting, so plain standard printf will work
2014-02-04T19:15:35 < Rickta59> yeah that is what i was using
2014-02-04T19:16:01 < zyp> haven't tried that route myself, I like having the calls explicit
2014-02-04T19:16:08 < Rickta59> launchpad arm-none-eabi + librdimon
2014-02-04T19:16:19 < Rickta59> + git compile of oocd
2014-02-04T19:16:20 < Steffanx> Last time it i tried it it wasn't work painful slow. Openocd is/was slower than using the bmp though.
2014-02-04T19:16:56 < zyp> it works nicely with qemu :p
2014-02-04T19:17:14 < Steffanx> *-work
2014-02-04T19:23:27 < emeb> I need to figure out semihosting.
2014-02-04T19:24:02 < Steffanx> its easier than easy. PaulFertser had some nice short example somewhere
2014-02-04T19:24:55 < emeb> so it seems. I've seen a lot of talk about it, but never tried it so I don't have a good scope on what's involved in getting it working on both ends.
2014-02-04T19:25:56 < karlp> https://github.com/libopencm3/libopencm3-examples/tree/master/examples/stm32/l1/stm32l-discovery/usart-semihosting
2014-02-04T19:26:06 < karlp> it's mostly just adding rdimon specs
2014-02-04T19:26:40 < karlp> (there's probbaly some errors and simplifications that could be done still)
2014-02-04T19:28:36 < emeb> thx
2014-02-04T19:29:59 < karlp> mostly, there's probably a way to make the semihosting not fail if the debuggers' not connected or something
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2014-02-04T19:35:40 < emeb> looks like there's some good documentation in the launchpad gcc share directory
2014-02-04T19:37:12 < karlp> yeah, that's all I was copying
2014-02-04T19:37:32 < karlp> and then a little bit of notes from paul on telling oocd to actually enable it.
2014-02-04T19:37:46 < beaky> is a stm32f4 a good choice for digital smps
2014-02-04T19:38:01 < emeb> karlp: ya - the host side is the other question
2014-02-04T19:38:51 < gxti> beaky: f3 might be better, some of them have higher res ADC and DAC
2014-02-04T19:38:55 < emeb> beaky: seems like F4 might be overkill for that
2014-02-04T19:39:14 < Laurenceb> just a little
2014-02-04T19:41:07 < Miek> is there any reason why i can't have ext interrupts on a whole port? (f105)
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2014-02-04T19:46:31 < beaky> i love st
2014-02-04T19:48:31 < beaky> in what ways is stm32 better than arduino
2014-02-04T19:48:50 < madist> it takes 2 fewer keystrokes
2014-02-04T19:48:50 < gxti> r u trollin
2014-02-04T19:49:06 < beaky> no im just evaluating my options
2014-02-04T19:49:07 < gnomad> welcome, ##stm32, to the world of beaky....
2014-02-04T19:49:27 < gxti> guess so
2014-02-04T19:49:28 < Miek> i recognise the name from somewhere, i can't quite remember where
2014-02-04T19:49:37 < Steffanx> #arduino ? :P
2014-02-04T19:49:54 < Miek> maybe, i haven't idled there for a while though
2014-02-04T19:51:05 < beaky> seems stm32 has way more peripherals than arduino
2014-02-04T19:51:07 < Steffanx> fyi beaky, most people here aren't into arduino. Most people are actually more anti-arduino, so... :P
2014-02-04T19:51:16 < beaky> oh
2014-02-04T19:51:19 < beaky> :(
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2014-02-04T19:51:59 < Miek> eh, arduino's fine for quick prototyping and such
2014-02-04T19:52:28 < beaky> isnt stm32 launchpad also good for prototypes
2014-02-04T19:52:40 < gxti> wat
2014-02-04T19:52:55 < Steffanx> you probably mean the stm32 discovery boards.
2014-02-04T19:53:02 < bvernoux> hi
2014-02-04T19:53:05 < Steffanx> launchpad = texas instruments stuff.
2014-02-04T19:53:37 -!- jon1012 [~jon@foresight/developer/jon1012] has quit [Excess Flood]
2014-02-04T19:53:41 < Miek> i like the atmega pic
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2014-02-04T19:56:31 < BrainDamage> beaky is a troll, he picks random stuff and goes with "I love x"
2014-02-04T19:56:42 < BrainDamage> when inquired about x, he has no idea about what he's talking about
2014-02-04T19:59:10 < gnomad> trolling implies an intention... I am not sure that is the case with beaky.
2014-02-04T20:00:10 < gnomad> beaky is more like a friendly kitten that just won't get off your keyboard...
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2014-02-04T20:04:55 < jpa-> oh no, beaky is now here also :(
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2014-02-04T20:08:47 < beaky> yeah im checking out the stm32f4 discovery board
2014-02-04T20:09:04 < zyp> :(
2014-02-04T20:09:31 < beaky> so theres no "getting started for stm32 newbies" for the discovery?
2014-02-04T20:09:40 < beaky> except whatever the back of the box said
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2014-02-04T20:29:54 < beaky> so... what IDE should i get to develop on the stm32
2014-02-04T20:30:21 < zyp> whichever you want to use, or none if that's your preference
2014-02-04T20:30:24 < beaky> it recommends a lot like Altium, Atollic, IAR, Keil... but ive never used any of them so im open to what you guys recommend :D
2014-02-04T20:30:33 < zyp> I'm using plain vim
2014-02-04T20:30:36 < zyp> works for me
2014-02-04T20:30:45 < beaky> wow i love vim too
2014-02-04T20:30:50  * beaky high fives zyp
2014-02-04T20:31:09 < beaky> but i guess theres some kind of compiler and build system thing to go with the stm32
2014-02-04T20:31:29 < zyp> nah
2014-02-04T20:31:51 < zyp> developing for microcontrollers aren't really different from any other application
2014-02-04T20:32:24 < gxti> which means there are lots of people willing to give you plenty of rope to hang yourself with
2014-02-04T20:32:26 < zyp> the only difference is that when you've built an elf, instead of executing it directly you need to load it to the target microcontroller
2014-02-04T20:32:34 < beaky> eso i can use a gcc built for arm?
2014-02-04T20:32:36 < beaky> gxti: lol
2014-02-04T20:32:42 < zyp> but that's outside the build system, in my opinion
2014-02-04T20:32:55 < zyp> beaky, https://launchpad.net/gcc-arm-embedded/ <- just get this
2014-02-04T20:38:25 < beaky> ah theres a build in AUR for the gcc-arm :D
2014-02-04T20:39:56 < zippe> beaky: make + sublime text for me
2014-02-04T20:40:03 < zippe> most IDEs are a waste of time
2014-02-04T20:40:17 < ds2> s/most/all/
2014-02-04T20:40:26 < zippe> Not entirely
2014-02-04T20:40:32 < gnomad> make + emacs here...
2014-02-04T20:40:34 < zippe> Turbo Pascal was a pretty sweet deal
2014-02-04T20:40:37 < ds2> ewwwwwwwwwwwwwwwwwwwwww emacs
2014-02-04T20:40:54 < beaky> i wish i knew how to use make
2014-02-04T20:41:00 < zippe> beaky: make is Very Easy
2014-02-04T20:41:04 < beaky> i make cmake make my projects
2014-02-04T20:41:04 < ds2> nmake ;)
2014-02-04T20:41:11 < ds2> imake
2014-02-04T20:41:16 < ds2> qtmake
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2014-02-04T20:41:17 < ds2> gmake
2014-02-04T20:41:21 < zippe> beaky: if you are using cmake, then use the ninja backend instead
2014-02-04T20:41:21 < ds2> but no cmake :P
2014-02-04T20:41:23 < Tectu_> Steffanx, #stm32 forward does not fork anymore
2014-02-04T20:41:43 < beaky> so i shouldn't use cmake?
2014-02-04T20:41:45 < zippe> beaky: no reason to use the make backend - it's just slow and stupid
2014-02-04T20:41:50 < zippe> beaky: cmake is fine
2014-02-04T20:42:09 < beaky> what if i use naked make
2014-02-04T20:42:11 < zippe> beaky: I'm just saying, if you are using cmake, have it generate output for ninja and use ninja to build your stuff
2014-02-04T20:42:14 < beaky> oh
2014-02-04T20:42:45 < zippe> if make is C, Cmake is C++ and ninja is an assembler
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2014-02-04T20:43:07 < Robint91> hi all
2014-02-04T20:43:24 < beaky> hello Robint91
2014-02-04T20:43:24 < gnomad> meh, i've always just used gnu make.
2014-02-04T20:43:35 < zippe> gnomad: mostly ditto
2014-02-04T20:43:51 < zippe> I wish that __gmsl had gone somewhere though
2014-02-04T20:44:03 < zippe> I end up writing a bunch of the same boilerplate over and over again
2014-02-04T20:45:25 < zippe> Also, pattern rules are kinda busted, but they'll never be fixed.
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2014-02-04T20:46:34  * Robint91 wants MA USB
2014-02-04T20:48:58 < PaulFertser> USB won't get you chicks for free, you know
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2014-02-04T20:53:33 < Robint91> PaulFertser, -_-
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2014-02-04T21:01:43 < Steffanx> Tectu_ i read it's actually against freenode's policy to redirect #x to ##x :P
2014-02-04T21:04:54 < beaky> wow gcc for arm takes ages to compile
2014-02-04T21:05:09 < beaky> or maybe my pc is just a potato...
2014-02-04T21:05:28  * beaky  regrets using a rpi as a workstation
2014-02-04T21:05:43 -!- Viper168 [~Viper@unaffiliated/viper168] has quit [Ping timeout: 272 seconds]
2014-02-04T21:08:41 < gxti> you really shouldn't build your own toolchain until you have some existing hands-on experience. i had quite a lot o that when i started and i still screwed it up.
2014-02-04T21:09:05 < gxti> of course you can't use the gcc-arm-embedded build on rpi... but you should still try to find somewhere you can
2014-02-04T21:11:14 < bvernoux> beaky: make -j can help on multicore
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2014-02-04T21:23:12 < beaky> ok ive compiled arm-none-eabi-gcc
2014-02-04T21:23:22 < beaky> now i dont know what to do next :(
2014-02-04T21:23:56 < Rickta59> relax have a homebrew
2014-02-04T21:24:07 < gnomad> and don't worry!
2014-02-04T21:34:19 -!- R0b0t1 [~dev@unaffiliated/r0b0t1] has quit [Ping timeout: 272 seconds]
2014-02-04T21:34:32 < qyx_> 20:05  * beaky  regrets using a rpi as a workstation
2014-02-04T21:34:34 < qyx_> uhm
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2014-02-04T21:39:22 < Steffanx> trollink, qyx_
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2014-02-04T22:52:32 < karlp> Rickta59: you brew?
2014-02-04T22:54:35 < gnomad> I have a 1st ed of papazian.  ;-)
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2014-02-04T23:15:24 < Rickta59> in the 80's not now
2014-02-04T23:16:25 < Rickta59> although electronics we have today would have been welcomed back then
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2014-02-04T23:39:27 < karlp> I'd say the ingredients and consistency in supply would be the biggest change, but I wasn't brewing back then :)
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2014-02-04T23:49:27 < karlp> anyone have a trick for getting ieee standards?
2014-02-04T23:49:50 < karlp> I thought I remembered some hostname mangling that worked to bypass needing to buy them
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--- Day changed Wed Feb 05 2014
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2014-02-05T00:11:15 < zyp> http://www.tag-connect.com/BSD <- bmp is mentioned on the tag-connect site
2014-02-05T00:11:19 < zyp> that's kinda fun
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2014-02-05T01:47:11 < gxti> at least this time USPS actually left a missed delivery notice, unlike yesterday
2014-02-05T01:48:34 < englishman> old man came to my door thismorning holding a package i was expecting
2014-02-05T01:48:38 < englishman> found it in the street
2014-02-05T01:48:51 < englishman> :-/
2014-02-05T01:49:39 < beaky> whats the deal with the CCM (core-coupled memory) on the stm32f3?
2014-02-05T01:49:58 < gxti> i bet google could tell you all about it
2014-02-05T01:49:58 < englishman> it's like memory, but coupled to the core
2014-02-05T01:50:02 < zyp> it's a separate block of memory
2014-02-05T01:50:03 < beaky> is it just a gimmick, or will it lend an edge to certain applications
2014-02-05T01:50:06 < beaky> oh
2014-02-05T01:50:10 < gxti> it's not like memory englishman, it IS memory. geez.
2014-02-05T01:50:12 < beaky> how does it work?
2014-02-05T01:50:12 < zyp> but only accessible from the cpu, not dma
2014-02-05T01:50:20 < zyp> just like any other memory block
2014-02-05T01:50:27 < englishman> lack of commas: it's, like, memory
2014-02-05T01:50:35 < gxti> totes
2014-02-05T01:50:59 < beaky> so if i move from flash or eeprom to ccm, then my cpu code runs faster?
2014-02-05T01:51:10 < beaky> basically
2014-02-05T01:51:21 < zyp> the thing about core-coupled memory is that it's cheaper than adding another block to the memory matrix so it can be accessed from all masters
2014-02-05T01:51:29 < gxti> if you move from flash to regular ram it goes faster too
2014-02-05T01:51:40 < zyp> gxti, not necessarily
2014-02-05T01:51:47 < zyp> regular ram would have more contention
2014-02-05T01:52:02 < gxti> i guess if your bus is saturated then yeah
2014-02-05T01:53:00 < zyp> beaky, sram is faster than flash, so putting hot code there may speed up your application
2014-02-05T01:53:06 < gxti> basically any big chunk of crap you want to put in RAM but don't need to DMA should go in CCM
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2014-02-05T01:53:20 < zyp> if you don't know what to do with it, just ignore it
2014-02-05T01:53:26 < beaky> so moving my LUTs from flash to ram will help things?
2014-02-05T01:53:39 < gxti> maybe.
2014-02-05T01:54:37 < beaky> why do mcus have so much flash, but relatively smaller amount of ram? wont it be better to have more sram at the expense of flash
2014-02-05T01:54:51 < gxti> money
2014-02-05T01:55:07 < zyp> flash is cheaper and nonvolatile
2014-02-05T01:55:39 < zyp> all the static content you're storing in sram must still come somewhere, so you still end up using flash for it
2014-02-05T01:55:44 < gxti> getting 1mbit of flash is cheap, getting 64K more RAM is not :[
2014-02-05T01:55:53 < gxti> 1mbyte*
2014-02-05T01:56:25 < zyp> then again you have stuff like lpc43x0 which has no internal flash, just ram
2014-02-05T01:56:25 < englishman> sounds like a job for arduino
2014-02-05T01:56:42 < gxti> or gallileo
2014-02-05T01:56:45 < zyp> split into five blocks that can be accessed independently
2014-02-05T01:56:46 < gxti> bitbangin erry day
2014-02-05T01:57:32 < gxti> to be fair a lot of things that would take up lots of flash are compressible
2014-02-05T01:57:58 < zyp> good point
2014-02-05T01:58:04 < gxti> but it's beside the point because in STM32 land anyway, you have lots more flash than ram
2014-02-05T01:58:53 < zyp> anyway, the nonvolatile nature of flash makes it pointless to do lots of initialization on every boot
2014-02-05T01:59:03 < zyp> since the data is just there and ready
2014-02-05T01:59:21 < gxti> as long as wait states aren't holding you back
2014-02-05T01:59:27 < zyp> true
2014-02-05T01:59:42 < zyp> the cache on f4 should help nicely
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2014-02-05T03:11:18 < gxti> bleh, trying to bring up f4 and writing GPIOA->MODER seems to be faulting. but i can read it from gdb, and GPIOA is clocked...
2014-02-05T03:13:05 < zyp> can you write it from gdb?
2014-02-05T03:13:06 < gxti> wait never mind, it's not faulting. i chose SWDIO as a gpio. super pro.
2014-02-05T03:13:13 < zyp> :D
2014-02-05T03:13:42 < gxti> i did the pinout for a f1 but i'm trying stuff out on my f4disco because i don't have a f1 dev board
2014-02-05T03:14:51 < gxti> actually f1 has it on the same pin so i guess i just screwed up
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2014-02-05T03:17:50 < shan_rei> anybody here use em::blocks?
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2014-02-05T03:28:16 < aadamson> dongie, you still sleeping?  ok so who knows *and will share* the magic around not needing boot0/nrst jumpers to flash - on a 405 for example, I'd just as soon not need the jumpers if possible and I've heard someone say that i can be done (not talking swd either)?
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2014-02-05T03:33:39 < dongie> jumper will force rom-based bootloader.
2014-02-05T03:33:44 < dongie> or you can jump to it from code on reset.
2014-02-05T03:33:52 < dongie> but jumper is sure way to make it happen, if code is broken
2014-02-05T03:36:29 < aadamson> darn I was hoping there might be away to not need the boot0 jumper... but it's kinda a chicken and egg thing I guess...ok... just a thought
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2014-02-05T03:39:43 < dongie> it doesnt take up space, you can use it for production flashing and then have your own bootloader that doesnt suck to deal with users.
2014-02-05T03:42:03 < aadamson> well in that vain, you'd just use swd and forget the rest :)... but understood
2014-02-05T03:42:52 < dongie> production flashing over swd? only if you enjoy tag-connect or wearing out pads trying to hold swd pins to it
2014-02-05T03:43:33 < aadamson> yeah I know... all depends on volume I suppose
2014-02-05T03:43:46 < aadamson> http://ebrombaugh.studionebula.com/embedded/stm32f303breakout/index.html - your favorite :)
2014-02-05T03:43:48 < dongie> maybe some jig with testpoints would work
2014-02-05T03:44:16 < aadamson> yeah and those funky pins that I can never remember the name off
2014-02-05T03:44:17 < aadamson> of
2014-02-05T03:44:23 < aadamson> pogopins
2014-02-05T03:45:51 < aadamson> http://ebrombaugh.studionebula.com/embedded/bmp2/index.html - well dang, someone did it up right :)...
2014-02-05T03:46:18 < dongie> i think thats stuff from my pcb fab
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2014-02-05T04:04:37 < englishman> dongie: i never got those f3minis to flash via uart, but the olimex shit came and they flash fine via swd
2014-02-05T04:05:20 < gxti> tagconnect is sweet
2014-02-05T04:05:25 < dongie> englishman: odd.
2014-02-05T04:05:46 < dongie> any shorts around cp2102? like ondtr lines or someshit
2014-02-05T04:06:22 < englishman> no, and i inspected both board
2014-02-05T04:06:28 < dongie> anywaty,weird, cuz works for me and a few other peopel
2014-02-05T04:06:36 < englishman> yeah
2014-02-05T04:06:43 < englishman> only thing i didnt do is scope txrx lines
2014-02-05T04:06:51 < englishman> but it works in swd so meh for now
2014-02-05T04:07:20 < aadamson> englishman, what error do you get?
2014-02-05T04:07:41 < englishman> locked flash, or something
2014-02-05T04:07:43 < dongie> i should clone emebs board without giving credit and release as matchboxarm 3.0
2014-02-05T04:07:45 < aadamson> I have this strange problem only on some pc's  I can't use the 2.6 flash too, I ahve to use the 2.2 version.
2014-02-05T04:07:55 < englishman> http://i.imgur.com/HKXKdvr.jpg
2014-02-05T04:08:00 < englishman> hmm
2014-02-05T04:08:10 < dongie> and 2.2 wont support 303
2014-02-05T04:08:14 < englishman> ive used 2.6 on f1
2014-02-05T04:08:15 < dongie> since its older than shit
2014-02-05T04:08:17 < aadamson> if you want to try it... - https://dl.dropboxusercontent.com/u/6730484/Flash_Loader_Demonstrator_v2.2.0_Setup.exe
2014-02-05T04:08:18 < englishman> ok
2014-02-05T04:08:22 < aadamson> I'm pretty sure I've used it on my 303's
2014-02-05T04:08:29 < englishman> 2.6 is already like 2012 stuff
2014-02-05T04:08:38 < aadamson> but not 100% cuz I might have used usb instead of uart on them
2014-02-05T04:08:46 < aadamson> so dongs is probably right
2014-02-05T04:08:53 < aadamson> can try 2.4 I think if you can find it
2014-02-05T04:11:15 < dongie> i guess  you can probly copy the .map shit or wheatever
2014-02-05T04:11:16 < dongie> from f3
2014-02-05T04:11:26 < dongie> duno if it has some internal databsae of bootloader IDs
2014-02-05T04:11:31 < englishman> can i debug while in bootloader? so i can see which bootloader it's selected?
2014-02-05T04:11:49 < dongie> with swd? should beable to break in yeah
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2014-02-05T04:14:37 < dongie> this might be the same thing like this 0.1% of retards who just SWEAR they cant get flash loader to work
2014-02-05T04:14:40 < dongie> no matter wat
2014-02-05T04:14:48 < dongie> UR BOARD IS BROKEN CUZ I CANT REFLASH IT AFTER FLASHING HARKAIRI!!!!
2014-02-05T04:15:06 < dongie> like hello fuckers, its in ROM. google what that means and fuck offfffff
2014-02-05T04:15:36 < englishman> well f1 has just the one bootloader but f3 has three to choose from right
2014-02-05T04:15:46 < dongie> F1 also has can/whatever
2014-02-05T04:15:46 < englishman> so maybe it's jumping to the wrong one or something
2014-02-05T04:15:50 < englishman> hm k
2014-02-05T04:16:25 < dongie> if all your pins are floating it should go to uart
2014-02-05T04:16:27 < dongie> cuz those are high
2014-02-05T04:16:31 < dongie> i mean all your other pins
2014-02-05T04:17:32 < englishman> i recognize you but i don't remember where from
2014-02-05T04:17:45 < dongie> aids
2014-02-05T04:17:49 < gxti> that's because you blocked it from memoery
2014-02-05T04:17:57 < dongie> gxti did my trash show up
2014-02-05T04:18:05 < gxti> it would have but USPS is lame
2014-02-05T04:18:09 < gxti> should deliver tomorrow
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2014-02-05T04:19:39 < dongie> flyback i thought you'd be busy shitting out your intestines instead of drying hair
2014-02-05T04:21:31 < dongie> what hte fuck is going on there.
2014-02-05T04:22:19 < qyx_> i see some dip's
2014-02-05T04:23:30 < dongie> gxti: can you troll demo out of these guys ? http://www.labsat.co.uk/index.php/en/products/satgen-simulator-software/2-products
2014-02-05T04:23:43 < dongie> http://www.labsat.co.uk/index.php/en/products/satgen-simulator-software
2014-02-05T04:23:51 < dongie> To receive a free copy of this demo version, please contact your local LabSat distributor or contact us directly.
2014-02-05T04:24:22 < dongie> i have somethign that can play I/Q at 1.5ghz so i have no interest in buying their hardware
2014-02-05T04:28:11 < qyx_> i see some lemo connectors
2014-02-05T04:28:14 < qyx_> will be expensive
2014-02-05T04:29:43 < dongie> im sure taking out 120second limit will be easy
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2014-02-05T04:51:34 < amstan> flyback-: hey, what's up?
2014-02-05T04:51:44 < amstan> flyback-: you're not hanging out in $43oh anymore?
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2014-02-05T05:32:23 < amstan> what happened?
2014-02-05T05:33:42 < amstan> heh
2014-02-05T05:34:21 < amstan> though.. what do you do when they leave?
2014-02-05T05:38:45 < amstan> flyback-: cya
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2014-02-05T06:01:48 < upgrdman> lol
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2014-02-05T08:03:11 < dongatory> zyp: ^
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2014-02-05T08:21:00 < forrestv> o.O
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2014-02-05T09:23:49 < kuldeepdhaka> http://pastebin.com/BvdbBhhU      i was looking at stm32f072 usb device library/core/usbd_req.c  (not usb device driver). the paste is an extract from it.
2014-02-05T09:24:06 < kuldeepdhaka> since arm is itself little endian and usb is also little endian.
2014-02-05T09:24:51 < kuldeepdhaka> why is the code doing one by one copying, instead memcpy or similar can be used.
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2014-02-05T09:26:00 < kuldeepdhaka> (for the first 8bytes)
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2014-02-05T10:32:16 < dongatory> http://arduino.cc/en/Main/arduinoBoardEsplora wats this
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2014-02-05T10:39:12 < zyp> dongatory, guess I should pay now then
2014-02-05T10:39:24 < zyp> is the price on the invoice I got quoted accurate?
2014-02-05T10:39:41 < dongatory> for pcba? yes. t here's probably shipping too, i didnt ask about that
2014-02-05T10:39:49 < dongatory> did oytut have to pay it last time?
2014-02-05T10:39:54 < zyp> I believe that was on the quote
2014-02-05T10:39:59 < dongatory> ok, then you're all good
2014-02-05T10:40:12 < dongatory> i donged the other place for breakout wires
2014-02-05T10:40:17 < dongatory> she hasnt r eplied, but I think real holiday is over tomorw
2014-02-05T10:40:29 < dongatory> one of my china is back already
2014-02-05T10:40:30 < dongatory> but not another
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2014-02-05T10:52:35 < zyp> ok
2014-02-05T10:53:12 < dongatory> .guru is open for registration today at 11am est
2014-02-05T10:53:17 < dongatory> time to register arduino.guru
2014-02-05T10:53:51 < zyp> there's this guy in the US that might be interested in half the cables or so, so I might be interested in having the shipment split
2014-02-05T10:53:58 < dongatory> OK
2014-02-05T10:54:04 < zyp> but I'm not sure how many he want yet and when he needs them
2014-02-05T10:58:58 < Robint91_wrk> dongatory, pussy.guru penis.guru ....
2014-02-05T10:59:09 < Robint91_wrk> all the possibilities for trolling
2014-02-05T10:59:30 < dongatory> yep
2014-02-05T10:59:57 < dongatory> best of all, arduino.guru
2014-02-05T11:01:29 < dongatory> (which I just pre-ordered)
2014-02-05T11:11:03 < Thorn> dongatory: maker.guru
2014-02-05T11:11:17 < Thorn> http://de1-soc.terasic.com/
2014-02-05T11:15:11 < dongatory> why is their site so FUCKIGN SLOW
2014-02-05T11:16:08 < Thorn> everybody is ordering the new board
2014-02-05T11:16:13 < dongatory> bullshit
2014-02-05T11:16:16 < dongatory> wahts special about it
2014-02-05T11:16:19 < dongatory> it still hastn loaded
2014-02-05T11:17:06 < zyp> not loading here either
2014-02-05T11:17:14 < Claude> Thorn, ist that with the new cyclone with A9 cores?
2014-02-05T11:17:23 < Thorn> cyclone V with HPS
2014-02-05T11:17:34 < Claude> how much?
2014-02-05T11:17:39 < zyp> http://www.cnx-software.com/2013/11/15/terasics-altera-de1-soc-board-based-on-cyclone-v-dual-cortex-a9-fpga-sells-for-150-up/ <- this shit I guess
2014-02-05T11:17:39 < Thorn> I got the email, site doesn't load for me either
2014-02-05T11:17:59 < zyp> so $199 I guess
2014-02-05T11:18:03 < Claude> cool
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2014-02-05T11:25:50 < dongatory> useless
2014-02-05T11:25:58 < dongatory> fuck altera and fuck fpga vendors
2014-02-05T11:26:36 < dongatory> dumb site s till hasnt loaded
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2014-02-05T11:49:22 < dongatory> http://www.ti.com/tool/launchxl-f28027?DCMP=c2x-launchpad&HQS=c2000-launchpad retweeting from #stonertronics |  < evilbetty> $20 is a lot for something that even sux as paperweight :p
2014-02-05T11:56:00 < _rob> anyone know of a free c++ toolchain i can use with STM32?
2014-02-05T11:56:24 < zyp> https://launchpad.net/gcc-arm-embedded
2014-02-05T11:56:43 < _rob> thats just c ?
2014-02-05T11:57:37 < zyp> no
2014-02-05T11:57:42 < zyp> I'm using it for C++
2014-02-05T11:58:38 < _rob> ohh, great
2014-02-05T11:58:38 < _rob> thanks
2014-02-05T12:00:17 < karlp> heh, that picollo board forgot to include the jumpers, just like this cp2105 eval board
2014-02-05T12:00:35 < karlp> two jumbotron db9 connectors on the board, 2x db9-db9 cables in the box,
2014-02-05T12:00:54 < karlp> none of that is connected unless I find ~20 jumpers to connect
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2014-02-05T12:58:58 < dongatory> not only that
2014-02-05T12:59:02 < dongatory> he's using it for C++ELEVEN
2014-02-05T12:59:11 < dongatory> which is such hardcore shit no real compiler even supports it
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2014-02-05T13:01:38 < Steffanx> Yeah, the programmers of those "real compilers" aren't skilled enough to implement those new features.
2014-02-05T13:10:05 < dongatory> yep
2014-02-05T13:11:24 < zyp> it's 2014 now, they've had years to implement it
2014-02-05T13:14:51 < Viper168> what? wait it's 2014 already?
2014-02-05T13:15:24 < Steffanx> Yeah, happy 36th day Viper168
2014-02-05T13:16:31 < zyp> almost time for C++14 now
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2014-02-05T13:46:19 < dongatory> zyp: connectorbitch is back at work on 8th.
2014-02-05T13:46:22 < dongatory> what a lazy piece of shit
2014-02-05T13:54:19 < zyp> heh, ok
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2014-02-05T14:10:00 < _rob> dongatory, gcc-arm-embedded supports c++11 no ?
2014-02-05T14:11:41 < Steffanx> That's not a real compiler _rob ..
2014-02-05T14:15:08 < dongatory> ^%
2014-02-05T14:15:57 < twixx> Anyone with experiences in OTG-Host@STM32F4? Trying to get HID-Devices working with my uC. Having Problem with one Device: after Init, i only get one valid dataset after HID-Polling. other HID-Devices work fine. ideas?
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2014-02-05T14:34:50 < _rob> what do you mean real compiler ?
2014-02-05T14:35:15 < _rob> it compiles..
2014-02-05T14:35:24 < dongatory> commercial compiler which produces non-shitty code
2014-02-05T14:36:18 < _rob> ohh, so its not good then ?
2014-02-05T14:36:51 < _rob> what is a good compiler in that case ?
2014-02-05T14:37:40 < _rob> for arm I mean
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2014-02-05T14:42:36 < gnomad> gcc has never been known for it's optimization abilities.  That is one of the drawbacks of an optimizer that supports so many different languages and target architectures.
2014-02-05T14:43:08 < gnomad> Obviously a compiler that supports only *one* language and *one* target arch is going to have a much easier time achieving better optimization.
2014-02-05T14:44:05 < gnomad> gcc produces code that is more than acceptable for most people.
2014-02-05T14:44:22 < _rob> only ever used it on linux x86
2014-02-05T14:44:27 < gnomad> but yes, there are other compilers that produce tighter, faster code.
2014-02-05T14:45:04 < _rob> fair enough. rather get the free compiler and pay the extra $1 for a few more mhz I think
2014-02-05T14:45:44 < gnomad> when that allows you to use a slower part with less flash across millions of units, you can easily justify the 4-figure price tag....
2014-02-05T14:45:51 < _rob> suppose its worth paying for a better compiler it if your shipping alot of your product
2014-02-05T14:45:51 < dongatory> freetard compiler
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2014-02-05T14:53:43 < PaulFertser> dongatory: I'm still willing to avaluate a reasonably sized (that is, something which wouldn't take weeks to read disassembly of) example where you compare your favourite commercial compiler with current gcc.
2014-02-05T14:55:11 < dongatory> PaulFertser: even basic shit like uint16_t foo = a << 8 | b will end up in proper REV16 or wahtever instruction with a commercial compiler.
2014-02-05T14:57:24 < PaulFertser> dongatory: so? Let's take some small enough but real-life code and compare the end result, choosing the optimisation goal in advance.
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2014-02-05T15:02:21 < fbs> dongie wont let you do anything that might prove him wrong and forces him to stop hating :)
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2014-02-05T15:06:47 < gnomad> dongatory: what compiler do you use, and do they over an evaluation version?
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2014-02-05T15:07:32 < dongatory> yes and yes
2014-02-05T15:07:36 < dongatory> mdk-arm
2014-02-05T15:07:38 < gnomad> I too am curious at just how much better the commercial options are.
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2014-02-05T15:08:23 < gnomad> and how much did you pay for your license?
2014-02-05T15:08:43 < dongatory> more than you can afford, most likely
2014-02-05T15:09:07 < PaulFertser> dongspeak
2014-02-05T15:10:18 < gnomad> anything 4 figures is more than I can afford, which is not at all unusual for a commercial compiler.
2014-02-05T15:10:41 < gnomad> anything 3 figure is more than I'd be willing to spend...
2014-02-05T15:11:10 < gnomad> because I am, after all, just a hobbyist.
2014-02-05T15:11:55 < gnomad> spending a buck for a faster part with more flash makes a *lot* more sense.
2014-02-05T15:12:30 < dongatory> crossworks is 3 figures but it also uses gcc :(
2014-02-05T15:12:34 < dongatory> so not much of an improvement there
2014-02-05T15:12:37 < dongatory> and IDE is pretty crappy really
2014-02-05T15:12:49 < gnomad> I don't do IDEs.
2014-02-05T15:12:53 < dongatory> CoIDE/CooCox stuff is pretty decent for freetard shit
2014-02-05T15:13:16 < gnomad> not the way most people think of them these days.
2014-02-05T15:14:33 < gnomad> emacs has been my ide since the late '80s...
2014-02-05T15:15:12 < Thorn> fact: no support for c++11 => it's not a compiler, it's a piece of trash
2014-02-05T15:16:31 < dongatory> C++(before or after 11) is irrelevant for embedded
2014-02-05T15:16:56 < gnomad> true, dat.
2014-02-05T15:17:15 < PaulFertser> dongatory: Java is. But C++ doesn't make you use virtual functions at all, so your statement is unfounded.
2014-02-05T15:17:28 < karlp> what, phones aren't embedded? ;)
2014-02-05T15:17:36 < PaulFertser> dongatory: C++ is as fast as C but provides for greater type-safety and enables metaprogramming.
2014-02-05T15:19:28 < Thorn> c++ is much safer than c when used correctly, and c++11 adds constexpr, rvalue references and other stuff relevant to embedded programming
2014-02-05T15:23:29 < madist> java is safer than c++
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2014-02-05T15:25:04 < Thorn> except when your uav crashes because gc decided to reclaim some memory
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2014-02-05T15:34:59 < _rob> does the RTC keep updating in all sleep modes if run from an extern crystal ?
2014-02-05T15:35:25 < karlp> _pretty_ sure that's pretty clearly described in the ref manual for the rtc...
2014-02-05T15:36:34 < _rob> ok, found it, and your right it does
2014-02-05T15:36:35 < _rob> thanks
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2014-02-05T15:40:18 < Laurenceb> http://www.liveleak.com/view?i=345_1390498630
2014-02-05T15:43:03 < zyp> PaulFertser, I'm using virtual functions to handle bindings between layers in my usb stack
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2014-02-05T15:43:41 < zyp> it's practially equivalent to using a struct of function pointers between layers like libopencm3 do
2014-02-05T15:45:14 < zyp> and considering how little overhead an indirect call adds, I'd argue that virtual functions is not one of the things you should avoid on embedded
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2014-02-05T15:52:17 < zyp> dongatory, did you check f072 availability yet?
2014-02-05T15:55:39 < dongatory> o rite.. nope
2014-02-05T15:55:44 < dongatory> need to add to toDONG list
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2014-02-05T16:08:16 < Laurenceb> someone filmed my driving
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2014-02-05T17:21:17 < PaulFertser> zyp: I meant Java has a policy that every call is virtual, that'd be a considerable overhead. C++ doesn't impose that. It also doesn't have other retarded ideas like runtime typecheck for every array element access, unlike java.
2014-02-05T17:30:47 < Thorn> you should use arrays that check bounds unless NDEBUG is defined (something that c++ makes possible)
2014-02-05T17:31:01 < Thorn> I've been saved more than once by e.g. QList doing exactly that
2014-02-05T17:46:44 < PaulFertser> But Java also checks type on every write, see e.g. http://inst.eecs.berkeley.edu/~cs164/fa09/sections/section14/section14.html
2014-02-05T17:48:08 < jpa-> except if the checks are JITed away
2014-02-05T17:48:25 < jpa-> which they of course aren't in typical embedded situations, but non-JIT java is slow as hell anyway
2014-02-05T17:50:46 < PaulFertser> Anyway my point was that when dongs talks about C++ it's all FUD, as C++ doesn't impose any additional performance-restricting rules.
2014-02-05T17:50:56 < jpa-> of course
2014-02-05T17:51:01 < jpa-> most of dongstalk is crap anyway
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2014-02-05T18:16:14 < gxti> hmm constexpr
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2014-02-05T18:19:38 < jpa-> who will proofread my thesis? http://kapsi.fi/~jpa/stuff/other/diplomityo.pdf    as if it really matters whether it is correct or not
2014-02-05T18:23:45 < karlp> you can submit theses with chunks redacted for "trade secrets" in finland?
2014-02-05T18:23:48 < karlp> must be nice
2014-02-05T18:24:26 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has quit [Ping timeout: 245 seconds]
2014-02-05T18:24:27 < jpa-> sure we could, but there is no such thing here
2014-02-05T18:24:49 < karlp> "Due to trade secrets, the signal
2014-02-05T18:24:49 < karlp> processing algorithms used are not described in detail"
2014-02-05T18:24:50 < jpa-> just noted there why the thesis is more focused on something else :D
2014-02-05T18:25:10 < karlp> so it doesn't count for the thesis then, it's just something that also happened on the same platform?
2014-02-05T18:25:15 < jpa-> yes
2014-02-05T18:25:37 < jpa-> i.e. "if you think that this seems useless without signal processing stuff, yeah, you are pretty much correct!"
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2014-02-05T18:47:55 < edmont> hi
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2014-02-05T18:49:18 < edmont> i am using a stm32l and getting a hard fault exception in this call: GPIOF->MODER  &= 0xFFDFFFFF;
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2014-02-05T18:49:55 < jpa-> edmont: are you using gdb?
2014-02-05T18:50:18 < edmont> mmm, not sure
2014-02-05T18:50:39 < jpa-> are you using a debugger? :D
2014-02-05T18:50:48 < edmont> hahah, ok
2014-02-05T18:50:49 < edmont> yes
2014-02-05T18:51:03 < edmont> this is the keil dissasembly:
2014-02-05T18:51:06 < edmont>     63:         GPIOF->MODER  &= 0xFFDFFFFF;
2014-02-05T18:51:07 < edmont> 0x080003C4 4819      LDR      r0,[pc,#100]  ; @0x0800042C
2014-02-05T18:51:07 < edmont> 0x080003C6 3818      SUBS     r0,r0,#0x18
2014-02-05T18:51:07 < edmont> 0x080003C8 6802      LDR      r2,[r0,#0x00]
2014-02-05T18:51:07 < edmont> 0x080003CA F4221200  BIC      r2,r2,#0x200000
2014-02-05T18:51:07 < edmont> 0x080003CE 6002      STR      r2,[r0,#0x00]
2014-02-05T18:51:28 < jpa-> oh, keil; well, do you have the SCB->CFSR register contents, i.e. cause of hardfault?
2014-02-05T18:51:38 < jpa-> also how did you determine it was that line?
2014-02-05T18:52:07 < edmont> "show caller code" in keil
2014-02-05T18:52:13 < jpa-> ok
2014-02-05T18:52:43 < zyp> what's the contents of r0 at the point of failure?
2014-02-05T18:53:07 < jpa-> can it show the exact instruction also? the address should be at  stackpointer + 5*4  or so
2014-02-05T18:53:20 < edmont> mmm, dont remember how to check registers in keil
2014-02-05T18:53:24 < edmont> let me see...
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2014-02-05T18:56:36 < edmont> can't find it...
2014-02-05T18:56:49 < edmont> omg
2014-02-05T18:56:57 < edmont> it's right there...
2014-02-05T18:57:27 < edmont> R0: 0x40021818
2014-02-05T18:58:01 < zyp> what about PC?
2014-02-05T18:58:11 < jpa-> (maybe it is an imprecise error from some previous line, CFSR would tell)
2014-02-05T18:58:29 < edmont> PC: 0x08000168
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2014-02-05T18:58:46 < edmont> jpa-: can't find CFSR
2014-02-05T18:58:49 < zyp> that's a completely different place than your disassembly :)
2014-02-05T18:58:58 < jpa-> zyp: that's probably PC of the hardfault handler
2014-02-05T18:59:13 < jpa-> if he looked it up in the register now that he is in the handler..
2014-02-05T18:59:14 < edmont> yes
2014-02-05T18:59:27 < zyp> yeah, if the debugger doesn't trap it
2014-02-05T18:59:39 < edmont> i can set a breakpoint right after that call
2014-02-05T18:59:59 < jpa-> edmont: is there a "watch window" or something? try typing    *(uint32_t*)0xe000ed28   there
2014-02-05T19:00:24 < jpa-> that should give CFSR value
2014-02-05T19:01:06 < edmont> Memory?
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2014-02-05T19:02:02 < edmont> jpa-: i can see that memory address
2014-02-05T19:02:13 < karlp> interesting thesis jpa :)
2014-02-05T19:02:34 < jpa-> karlp: uh, really? pretty boring to write about but i guess i had too much of it
2014-02-05T19:02:52 < zyp> aren't thesises always boring to write? :p
2014-02-05T19:02:57 < jpa-> probably
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2014-02-05T19:03:55 < edmont> http://postimg.org/image/pwhi3m559/full/
2014-02-05T19:03:57 < beaky> hello
2014-02-05T19:04:22 < edmont> like that jpa-?
2014-02-05T19:04:40 < jpa-> (i can't believe that an IDE like that wouldn't have proper support for debugging hardfaults.. like the gdb macros do..)
2014-02-05T19:05:03 < Thorn> it says "mode: thread"
2014-02-05T19:05:08 < jpa-> edmont: yeah, but no ED28 there, it begins at ED7F in your screenshot
2014-02-05T19:05:18 < Thorn> i.e. it's not even in the handler
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2014-02-05T19:05:36 < jpa-> ah, he placed a breakpoint this time
2014-02-05T19:05:55 < jpa-> edmont: try stepping one instruction at a time to see where the hardfault occurs
2014-02-05T19:08:59 < edmont> jpa-: it happens in the first LDR
2014-02-05T19:09:24 < edmont> 3C4
2014-02-05T19:09:42 < Thorn> https://twitter.com/DLSpencer10/statuses/430760096063172608
2014-02-05T19:13:03 < edmont> jpa-: http://postimg.org/image/6rsev03on/
2014-02-05T19:18:33 < edmont> jpa-: and this http://postimg.org/image/6xx1tl6hp/
2014-02-05T19:19:30 < Thorn> is your gpio clocked?
2014-02-05T19:20:03 < edmont> Thorn:   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
2014-02-05T19:26:01 < edmont> Thorn: http://postimg.org/image/ud9wptvur/
2014-02-05T19:26:09 < edmont> it seems it is not
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2014-02-05T19:32:53 < edmont> Thorn: i did RCC->AHBENR |= 0x20; so it's enabled now
2014-02-05T19:33:01 < edmont> but still the same fault
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2014-02-05T19:34:46 < jpa-> edmont: it's impreciserr, so it may be from some other instruction
2014-02-05T19:35:06 < jpa-> look at the code right before it and try to see if there is something dodgy there
2014-02-05T19:35:08 < edmont> how do i know?
2014-02-05T19:35:45 < jpa-> if nothing else helps, comment some of it out or add some data memory barriers
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2014-02-05T19:36:46 < edmont> ok, this is the previous instruction: GPIOF->BSRRL = GPIO_Pin_10;
2014-02-05T19:37:07 < edmont> GPIO port bit set/reset register (GPIOx_BSRR) (x = A..H)
2014-02-05T19:37:19 < edmont> maybe it's not possible to address that register that way?
2014-02-05T19:37:34 < jpa-> probably something even before that, then
2014-02-05T19:39:10 < edmont> int main(void)
2014-02-05T19:39:10 < edmont> {
2014-02-05T19:39:10 < edmont>   RCC_GetClocksFreq(&RCC_Clocks);
2014-02-05T19:39:10 < edmont>   SysTick_Config(RCC_Clocks.HCLK_Frequency / 100);
2014-02-05T19:39:10 < edmont>  RCC->AHBENR |= 0x20;
2014-02-05T19:39:10 < edmont>  GPIOF->BSRRL = GPIO_Pin_10;
2014-02-05T19:39:10 < edmont>  GPIOF->MODER  &= 0xFFDFFFFF;
2014-02-05T19:39:16 < edmont> that's all
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2014-02-05T19:40:04 < jpa-> can't see trouble there
2014-02-05T19:40:27 < edmont> :(
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2014-02-05T19:41:51 < edmont> i started for a program intended for the official stm32l evaluation board
2014-02-05T19:42:01 < edmont> but i'm using the olimex board
2014-02-05T19:42:12 < edmont> how could that affect?
2014-02-05T19:42:28 < jpa-> if your clock frequency is higher, you may need to adjust the flash wait states
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2014-02-05T19:42:57 < beaky> so...
2014-02-05T19:43:15 < beaky> is it wise to run both an ethernet server and a synchronous single-phase buck converter on a single stm32
2014-02-05T19:43:32 < beaky> or will i have a bad time
2014-02-05T19:44:01 < gxti> probably fine
2014-02-05T19:44:10 < jpa-> edmont: karlp used to have that when his STM32L1 clock setup was wrong
2014-02-05T19:44:19 < edmont> http://www.st.com/st-web-ui/static/active/en/fragment/product_related/rpn_information/board_photo/stm32l-discovery_board.jpg
2014-02-05T19:44:29 < edmont> it comes without cristal?
2014-02-05T19:44:38 < beaky> does st have any reference design for synchornous buck converter
2014-02-05T19:44:41 < beaky> or appnotes
2014-02-05T19:44:46 < gxti> google
2014-02-05T19:45:01 < jpa-> edmont: so you do not change clock freq / PLL settings?
2014-02-05T19:45:15 < edmont> i didnt
2014-02-05T19:45:18 < gxti> edmont: well there's a low-frequency crystal there, and if it's like F4 there's also a 8mhz clock coming from the stlink chip
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2014-02-05T19:45:39 < karlp> what did I do?
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2014-02-05T19:45:55 < edmont> my board brings a 8 MHz xtal
2014-02-05T19:46:07 < beaky> aww seems not :(
2014-02-05T19:46:08 < jpa-> karlp: that crash you had in 2013-05, early boot hardfault with stm32l151
2014-02-05T19:46:12 < edmont> and keil target settings also
2014-02-05T19:46:15 < karlp> oh right,
2014-02-05T19:46:39 < edmont> well, mine is 152
2014-02-05T19:47:02 < jpa-> edmont: so at what speed does your CPU run? i assume that comes from the keil settings?
2014-02-05T19:47:16 < edmont> 8 MHz
2014-02-05T19:47:33 < jpa-> oh well, should be no issue then if you underclock the cpu so low
2014-02-05T19:48:20 < karlp> assuming it's runningn at what he thinks it's running at
2014-02-05T19:48:42 < jpa-> yeah, but i'm too lazy to ask to check the clock configs
2014-02-05T19:48:47 < englishman> Edmont clock speed is usually not the same as crystal oscillator
2014-02-05T19:48:57 < jpa-> karlp: do you remember what the CFSR said in your case?
2014-02-05T19:49:33 < edmont> http://jcqi-workspace.googlecode.com/svn/tags/workforstm32l152_TAG/Libraries/CMSIS/Device/ST/STM32L1xx/Source/Templates/iar/startup_stm32l1xx_md.s
2014-02-05T19:49:54 < edmont> englishman: true, i didnt touch anything related with clocks
2014-02-05T19:50:07 < edmont> maybe is that file what sets everything
2014-02-05T19:50:45 < jpa-> nope
2014-02-05T19:51:11 < jpa-> edmont: so what is this "keil target settings" that you were talking about?
2014-02-05T19:51:48 < edmont> well, it just specifies the xtal freq
2014-02-05T19:51:59 < jpa-> sounds strange
2014-02-05T19:51:59 < edmont> but says nothing about clocks
2014-02-05T19:52:17 < karlp> jpa-: no idea sorry
2014-02-05T19:53:38 < jpa-> karlp: ah, it was IBUSERR, found it in the logs
2014-02-05T19:53:39 < edmont> here: https://github.com/bjornfor/stm32-test/blob/master/STM32L1xx_StdPeriph_Lib_V1.1.1/Project/STM32L1xx_StdPeriph_Examples/I2C/I2C_EEPROM/system_stm32l1xx.c
2014-02-05T19:53:59 < jpa-> so maybe not the same thing here
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2014-02-05T19:56:23 < edmont> that's the default clock configuration
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2014-02-05T19:57:18 < edmont> and that code is executing
2014-02-05T19:57:26 < edmont> i tested it with the debugger
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2014-02-05T20:04:56 < edmont> need to go
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2014-02-05T20:12:23 < beaky> lhello
2014-02-05T20:16:17 < beaky> iff i get a watchdog RESET is there a way to know?
2014-02-05T20:18:28 < zyp> yes
2014-02-05T20:18:37 < zyp> there's a reset reason register somewhere
2014-02-05T20:19:28 < gxti> yes there is a way
2014-02-05T20:20:33 < beaky> wow i didnt realize the stm32 was so new
2014-02-05T20:21:03 < beaky> i guess arm cortex m itself is kinda last decade
2014-02-05T20:21:24 < beaky> i am riding on the shoulders of giants
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2014-02-05T21:12:52 < vadmeste> Hello everybody. I am trying to execute the ST example which loads pictures from the USB mass storage, it works when I run it after flashing using stlink tool but when I replug the usb power of my stm32 board, it doesn't work at all. I noticed that the application is blocked in HSEStatus = RCC->CR & RCC_CR_HSERDY of SetSysClock() and StartUpCounter is not really incremented according to gdb... Any idea ?
2014-02-05T21:17:57 < bvernoux> problem to lock the PLL
2014-02-05T21:18:13 < bvernoux> internal frequency is not stable
2014-02-05T21:18:26 < bvernoux> yo avoid any PLL problem you shall use external crystal
2014-02-05T21:19:10 < bvernoux> also in your case i think it already use external crystal
2014-02-05T21:19:14  * karlp coughs *bullshit*
2014-02-05T21:19:23 < karlp> hsi to pll is no fucking problem at all.
2014-02-05T21:19:30 < bvernoux> so maybe a bad GND ;)
2014-02-05T21:19:32 < gxti> why would it be blocked on "HSERDY" if it were a PLL problem?
2014-02-05T21:20:13 < bvernoux> if you have an ugly USB power supply it can avoid locking PLL ...
2014-02-05T21:20:39 < bvernoux> especially ref design connect USB shield to GND
2014-02-05T21:20:51 < bvernoux> (to check)
2014-02-05T21:21:18 < gxti> connecting circuit shield to ground is going to make noise problems worse, not better
2014-02-05T21:21:52 < gxti> vadmeste: which board?
2014-02-05T21:23:03 < bvernoux> gxti: it is what i say
2014-02-05T21:23:11 < gxti> oh really
2014-02-05T21:23:22 < gxti> that's fascinating.
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2014-02-05T21:23:38 < bvernoux> gxti: ugly USB cable + ugly power could be a reason to avoid locking PLL or other problem
2014-02-05T21:23:51 < gxti> did you miss the part where it's stuck on HSE, not PLL?
2014-02-05T21:23:56 < bvernoux> also ugly decoupling capacitor ;)
2014-02-05T21:25:03 < bvernoux> https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=%2Fpublic%2FSTe2ecommunities%2Fmcu%2FLists%2Fcortex_mx_stm32%2FHSE%20can%20not%20be%20ready%20at%20debug&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=212
2014-02-05T21:25:33 < bvernoux> HSE is oscillator not READY
2014-02-05T21:27:23 < gxti> your density would compare favourably to that of a brick
2014-02-05T21:27:32 < bvernoux> External high-speed clock ready flag.
2014-02-05T21:27:40 < bvernoux> it is a clock problem
2014-02-05T21:28:10 < gxti> you don't say.
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2014-02-05T21:28:30 < qyx_> 20:18 < bvernoux> yo avoid any PLL problem you shall use external crystal
2014-02-05T21:28:31 < prog> howdy
2014-02-05T21:28:32 < qyx_> huh
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2014-02-05T21:47:26 < Steffanx> Who came up with this wonderful name englishman? dtfuhf .. ?
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2014-02-05T22:26:54 < beaky> hello
2014-02-05T22:27:26 < beaky> is there a way to solder stm32f303vct on perfboard
2014-02-05T22:28:09 < beaky> as well as the other stuff like xtal, caps, power bus,
2014-02-05T22:28:55 < gxti> a soldering iron would be a good start
2014-02-05T22:29:06 < beaky> i have one
2014-02-05T22:29:13 < beaky> but its a crappy fat one
2014-02-05T22:29:14 < gxti> maybe some solder, but not sure
2014-02-05T22:29:21 < gxti> poke it with the hot part
2014-02-05T22:29:30 < Simon--> just buy stm32f3discovery? :)
2014-02-05T22:29:31 < gxti> see what happens
2014-02-05T22:29:50 < zyp> deadbug it
2014-02-05T22:30:00 < zyp> although I wouldn't really recommend it
2014-02-05T22:30:20 < beaky> how do you deadbug an stm32 :)
2014-02-05T22:30:43 < zyp> http://bin.jvnv.net/f/qHoay.JPG <- I deadbugged a cpld once
2014-02-05T22:31:06 < beaky> wow thats hardcore
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2014-02-05T22:31:20 < zyp> not really, a stm32 has a much finer pitch
2014-02-05T22:31:27 < beaky> how did you even get precise joints on the leads with those tiny wires
2014-02-05T22:31:28 < zyp> the cpld was 0.8 or so, stm32 is 0.5
2014-02-05T22:31:57 < zyp> I poked it with the hot part of a soldering iron
2014-02-05T22:32:01 < zyp> you should listen to gxti
2014-02-05T22:32:19 < beaky> wont poking it with the warm end ultimately fry the chip inside
2014-02-05T22:32:22 < beaky> or am i paranoid
2014-02-05T22:32:55 < zyp> I can recommend learning how to solder before you attempt soldering anything that matters
2014-02-05T22:34:00 < fbs> nah, YOLO
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2014-02-05T22:35:02 < beaky> i can solder a resistor
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2014-02-05T23:14:47 < karlp> bleh, usb device works at home, but on the office comptuer it says, "xhci_hcd 0000:00:14.0: Too many fragments 65, max 63"
2014-02-05T23:14:53 < karlp> guess i'm going to have to behave better :|
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2014-02-05T23:41:50 < GargantuaSauce> beaky: http://www.ebay.ca/itm/151224314707
2014-02-05T23:42:45 < GargantuaSauce> i suggest you just use the discovery though
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--- Day changed Thu Feb 06 2014
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2014-02-06T00:22:54 < englishman> Steffanx: hehe
2014-02-06T00:24:07 < Steffanx> but is it really the "DTF" i think it is englishman?
2014-02-06T00:24:23 < englishman> Are you... Down to Fly?
2014-02-06T00:24:34 < Steffanx> no, not that :P
2014-02-06T00:24:59 < englishman> :D
2014-02-06T00:25:02 < Steffanx> urbandictionary ...
2014-02-06T00:25:07 < beaky> how did you guys learn to program the stm32?
2014-02-06T00:25:26 < beaky> im lost :( i just want to do spi
2014-02-06T00:25:38 < englishman> Steffanx: it's radio parts for rc planes
2014-02-06T00:25:47 < englishman> friend would text me "are you dtf?" when he wanted to fly
2014-02-06T00:25:48 < englishman> down to fly...
2014-02-06T00:25:58 < englishman> inside joke becomes brand name
2014-02-06T00:26:21 < englishman> beaky: read docs, many docs
2014-02-06T00:26:28 < englishman> stm32f3 reference manual
2014-02-06T00:26:36 < englishman> stm32f3 stdlib documentation
2014-02-06T00:26:41 < Steffanx> even alliexpress sells the crap englishman .. ?!
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2014-02-06T00:26:50 < englishman> yes, hawkeye is making them for me
2014-02-06T00:26:55 < englishman> as doing this stuff on my desk is a pain
2014-02-06T00:26:58 < Steffanx> -l
2014-02-06T00:27:08 < englishman> i could only make 100/week and that was fulltime
2014-02-06T00:27:10 < beaky> how do i translate what the docs say into code? register names seem to differ depending on what lib you use
2014-02-06T00:27:22 < englishman> also, he can sell them for less than it costs me in parts :/
2014-02-06T00:27:43 < Steffanx> beaky, not really.
2014-02-06T00:28:12 < Steffanx> when you use the st peripheral lib you can also look the examples, as they obfuscated everything.
2014-02-06T00:28:23 < Steffanx> *look at the
2014-02-06T00:33:58 < beaky> woah didnt know you could run haskell on the stm32
2014-02-06T00:34:05 < beaky> https://github.com/ajhc/demo-cortex-m3
2014-02-06T00:34:34 < Steffanx> you can run javascrip, python, lua, pawn.. need more?
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2014-02-06T00:38:46 < beaky> ah looks like i can use this header from cmcis
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2014-02-06T00:50:21 < HD_Mouse> would someone mind explaining GPIO analog mode to me? i get alternate function, input, and output modes for the pins, but i don't really understand the point of the analog mode
2014-02-06T00:50:48 < HD_Mouse> seems like the stm32 already has ADC converters, so i don't think that's what analog mode is implying
2014-02-06T00:51:11 < HD_Mouse> the only thing i can really guess is that it's just a 'preset' where the gpio pin is configured automatically to be floating
2014-02-06T00:52:37 < GargantuaSauce> DAC
2014-02-06T00:52:50 < HD_Mouse> er yeah, thanks
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2014-02-06T00:55:38 < HD_Mouse> so there's DAC and ADC on there already, but what is the point of setting a GPIO pin to Analog Mode?
2014-02-06T00:56:05 < GargantuaSauce> for using a DAC
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2014-02-06T00:59:53 < HD_Mouse> oh i see, i mistakenly assumed the DAC and ADC were used by setting the pins to alternate function mode
2014-02-06T00:59:55 < HD_Mouse> thanks
2014-02-06T01:01:12 < GargantuaSauce> well you can actually have a dac enabled and a pin set to (digital) output and it makes the output buffers fight each other and is generally a bad thing
2014-02-06T01:01:14 < GargantuaSauce> so uh don't do that
2014-02-06T01:02:19 < gxti> analog mode also switches off the digital input buffers which reduces current consumption. schmitt triggers use more current when the input is not in a defined logic state. it probably also reduces leakage that could affect ADC readings.
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2014-02-06T02:24:15 < ds2> sigh... does ANYONE have a usable search engine thesedays?
2014-02-06T02:24:40 < qyx_> duck duck go!
2014-02-06T02:25:15 < ds2> in its current form, that is not usable
2014-02-06T02:25:28 < ds2> just like the rest, it doesn't search for what I asked for but rather it searches for what it wants to search
2014-02-06T02:26:44 < qyx_> so maybe you aren't asking properly
2014-02-06T02:27:53 < qyx_> i mean, is something broken? ok. is everything broken? i could do it wrong
2014-02-06T02:28:04 < ds2> okay, that is a fair point
2014-02-06T02:28:16 < ds2> let me ask this then
2014-02-06T02:28:23 < ds2> does it do a AND or a OR of all the terms?
2014-02-06T02:28:32 < ds2> cuz it is not behaving consistantly
2014-02-06T02:29:58 < ds2> cuz it willy nilly drops terms from the search just to return more results
2014-02-06T02:30:16 < gnomad> google is not working for you?
2014-02-06T02:30:47 < qyx_> i use only "", minus, site: and filetype:
2014-02-06T02:30:58 < qyx_> did you try davanced search?
2014-02-06T02:31:13 < gxti> i set DDG as my default search engine but i ended up just explicitly using google every time anyway
2014-02-06T02:31:36 < qyx_> there is a "all these words" input box, i assume it could be like "and"
2014-02-06T02:31:42 < ds2> google is the worse
2014-02-06T02:31:47 < ds2> tried that
2014-02-06T02:32:13 < ds2> try +"foo" +"bar" and it still provides hits on only +"foo"
2014-02-06T02:32:45 < ds2> then there is the +"foo bar" and it gives me results for +"foo" +"bar"
2014-02-06T02:32:58 < ds2> then '-' syntax is ignored
2014-02-06T02:33:05 < ds2> that, IMO, is unusable.
2014-02-06T02:33:37 < gnomad> i've not had that problem
2014-02-06T02:33:53 < qyx_> it works for me
2014-02-06T02:34:25 < ds2> problem is that it is inconsistant
2014-02-06T02:34:35 < gnomad> provide an example where it doesn't work.
2014-02-06T02:35:52 < ds2> I'll do that next time
2014-02-06T02:36:24 < ds2> if I have to guess, it modifies the results if it thinks it is not getting enough hits whereas, I want it to tell me if there are not matches as written
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2014-02-06T02:41:24 < dongatory> yeah google does that shit.
2014-02-06T02:41:33 < dongatory> search for some obscure shit, and it'll search for some other trash instead
2014-02-06T02:41:38 < dongatory> gotta "faggot" it to get relevant shit
2014-02-06T02:41:48 < dongatory> it will sometimes substitute crap without even saying "diud you mean xxxx"
2014-02-06T02:41:52 < dongatory> fucking aids
2014-02-06T02:41:55 < dongatory> time to switch to bing
2014-02-06T02:42:11 < dongatory> the final straw was when you search for "thermostat" on google, it brings up all this nest trash. which I never even heard of.
2014-02-06T02:42:21 < dongatory> and then if you search thermostat on bing, the proper honeywell shit comes up
2014-02-06T02:42:24 < dongatory> fucking google spam
2014-02-06T02:43:34 < gnomad> heh
2014-02-06T02:44:28 < gnomad> give that google spent 3.2b for nest, i'm not surprised that nest now gets the #1 hit for "thermostat"
2014-02-06T02:45:17 < dongatory> i dont give the slightest fuck what google spent for what
2014-02-06T02:45:26 < dongatory> i dont need some google cloud spyware setting my temperature
2014-02-06T02:46:50 < gnomad> so i'm curious, what do you use for a cell phone?
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2014-02-06T02:47:41 < dongatory> google trash, cuz alternatives are worse.
2014-02-06T02:47:57 < gnomad> heh
2014-02-06T02:48:29 < dongatory> waiting for RMSPhone running free GNU/Turd
2014-02-06T02:48:58 < gnomad> is someone actually working on that?
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2014-02-06T02:49:33 < dongatory> i think so
2014-02-06T02:49:49 < dongatory> trying to remember wtf the name of it is
2014-02-06T02:49:52 < dongatory> it only runs on like 3 phones
2014-02-06T02:50:06 < dongatory> http://www.replicant.us/about/ this
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2014-02-06T02:54:36 < dongatory> Fairphone: the modem is embedded in the System on a Chip (SoC) which leads us to believe that it is poorly isolated from the rest of the platform and could access critical components such as storage, RAM, GPS and audio (microphone) of the device. If this was to be the case (we can only speculate about what the truth actually is), it would mean that the Fairphone is fatally flawed for security as it makes it possible for the phone to be converted to a remote spying d
2014-02-06T02:54:41 < ds2> bing is beginning to do that same crap
2014-02-06T02:54:42 < dongatory> haha
2014-02-06T02:54:45 < dongatory> 'typical RMS paranoia
2014-02-06T02:55:03 < ds2> DDG at one point wasn't doing it but in the last few months it is starting the same old shit
2014-02-06T02:55:45 < dongatory> waht hte fuck, duckduckgo is an actual search engine?
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2014-02-06T03:11:58 < ds2> :)
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2014-02-06T03:34:19 < gxti> dongatory: moonmodules have arrived
2014-02-06T03:34:34 < dongatory> awsm
2014-02-06T03:34:37 < dongatory> are they still in one piece?
2014-02-06T03:43:35 < emeb> someone needs to invent "dogelle" - the search engine with a friendly dog face.
2014-02-06T03:44:08 < dongatory> dont give them any ideas
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2014-02-06T04:05:36 < emeb> when I heard that "dogecoin" was actually a thing and a buddy was making ~$70/day mining them... didn't know if I should laugh or cry.
2014-02-06T04:16:39 < dongatory> haha
2014-02-06T04:17:23 < dongatory> time to start mining dogecoin
2014-02-06T04:18:46 < madist> where's your ambition ? start your own cryptocurrency
2014-02-06T04:18:48 < madist> dongcoin
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2014-02-06T04:30:24 < Thorn> dongecoin
2014-02-06T05:26:39 < dongatory> just use smartcard mode
2014-02-06T05:28:23 -!- madist [madisx@unaffiliated/madist] has quit [Quit: Leaving]
2014-02-06T05:31:34 < qyx_> hm, actually that fairphone doesn't look bad
2014-02-06T05:35:51 < qyx_> what do you mean by half duplex serial?
2014-02-06T05:36:09 < qyx_> one wire serial?
2014-02-06T05:40:18 < qyx_> and how are you going to solve the bus conflict in "half duplex circuit"?
2014-02-06T05:40:38 < qyx_> you have to take care in sw either way
2014-02-06T05:41:01 < qyx_> unless going opendrain or something similar
2014-02-06T05:45:42 < qyx_> hmm
2014-02-06T05:49:18 < dongatory> smartcard mode doesnt force 1.5stopbit??
2014-02-06T05:49:22 < dongatory> but it uses one pin for i/.o
2014-02-06T05:49:24 < dongatory> so..
2014-02-06T05:51:51 < qyx_> wth, www.irf.com doesn't work without flash
2014-02-06T05:53:22 < qyx_> http://ec.irf.com/v6/en/US/adirect/ir?cmd=catProductDetailFrame&productID=IR3476MTRPBF
2014-02-06T05:53:25 < qyx_> neat
2014-02-06T05:54:02 < qyx_> in case you need 12A for stm32
2014-02-06T05:59:12 < qyx_> try as floating input
2014-02-06T05:59:51 < qyx_> and reconfiguring TX from AF push-pull to floating input
2014-02-06T06:00:00 < qyx_> if i understand correctly
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2014-02-06T06:46:46 < dongatory> whats the next voltage for caps after 25V
2014-02-06T06:46:51 < dongatory> do tehy have like 36V or is 50 next jump
2014-02-06T06:48:34 < englishman> yes
2014-02-06T06:50:13 < dongatory> yes what
2014-02-06T06:50:24 < dongatory> i geuss ill just unlazy and get digikey
2014-02-06T06:50:39 < dongatory> 35V
2014-02-06T06:50:59 < englishman> yes, 35V
2014-02-06T06:51:02 < englishman> then 50
2014-02-06T06:52:21 < dongatory> http://www.digikey.com/product-detail/en/GMK316F106ZL-T/587-1352-2-ND/930704 dat Y5V
2014-02-06T06:58:41 < englishman> 5c for 10uF tho
2014-02-06T06:58:53 < englishman> from scammerkey
2014-02-06T06:59:05 < englishman> does it really matter if its 6-20uF
2014-02-06T07:21:16 < qyx_> wut
2014-02-06T07:21:32 < qyx_> farnell has x5r for 0.46e
2014-02-06T07:21:47 < qyx_> i was searching for the same thing a hour ago
2014-02-06T07:23:36 < qyx_> 24Vin atx supply can be built for ~$20
2014-02-06T07:26:56 < emeb_mac> y5v - meh
2014-02-06T07:27:36 < emeb_mac> that dielectic has horrible capacitance vs voltage curves.
2014-02-06T07:28:11 < qyx_> someone has tested that
2014-02-06T07:28:28 < qyx_> i have read some blog about it
2014-02-06T07:29:06 < qyx_> he found out that the physical size has much bigger influence on capacitance
2014-02-06T07:29:15 < emeb_mac> ya - run them at 1/2 the rated voltage and the capacitance drops to about 1/4 of the spec'd value.
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2014-02-06T08:03:18 < emeb_mac> here's one for dongs: http://www.adafruit.com/products/1652
2014-02-06T08:06:31 < englishman> he's well aware
2014-02-06T08:06:36 < englishman> also, 12v, what
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2014-02-06T08:22:45 < dongatory> emeb_mac: knew of this like a month ago when it first appeared.
2014-02-06T08:22:51 < dongatory> unlike AIDSFRUIT i don't manufacature in china
2014-02-06T08:22:59 < dongatory> been selling a few of them per day, mostly  to japs
2014-02-06T08:23:20 < emeb_mac> dongatory: I figured you'd have been on top of it.
2014-02-06T08:23:50 < dongatory> yeah 12V, fucking wut
2014-02-06T08:23:57 < dongatory> giant barrel jack wtf
2014-02-06T08:24:01 < emeb_mac> just thought it amusing that they were following along...
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2014-02-06T08:26:45 < dongatory> they had this shit in 'development' for almost a year
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2014-02-06T10:31:15 < edmont> hi
2014-02-06T10:31:24 < edmont> jpa-: nay idea?
2014-02-06T10:31:28 < edmont> any*
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2014-02-06T11:50:27 < vadmeste> Hello everybody. I tried to run the example LTDC_AnimatedPictureFromUSB in my stm32f429 discovery. It works fine just after flashing the image but when I replug the powering USB cable, the screen gets white... Any help? (I feel it is something related to the use of 168Mhz cpu frequency)
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2014-02-06T12:29:09 < Thorn> f429 goes up to 180MHz afair
2014-02-06T12:29:26 < dongatory> just skip the crap and overclock it to 220mhz
2014-02-06T12:30:40 < Thorn> I too had problems with their example firmware
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2014-02-06T12:35:01 < vadmeste> Thorn: I need to set 168 mhz because I need to load pictures from my usb mass storage (that's what I found in the doc)
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2014-02-06T13:24:54 < jon1012> dongatory, Thorn, I use stm32f407 at 240 mhz all the time, and it works perfectly
2014-02-06T13:32:51 < Thorn> liquid n2?
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2014-02-06T13:51:29 < dongatory> ok, i trhink its time to stop ircing from t hat other client
2014-02-06T13:51:31 < dongatory> this is dumb
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2014-02-06T13:58:52 < edmont> jpa-: i found the problem
2014-02-06T13:59:38 < edmont> GPIOF is not mapped in my device
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2014-02-06T14:08:35 < beaky> hello
2014-02-06T14:10:26 < beaky> so...
2014-02-06T14:10:36 < beaky> what have you guys made with your stm32s?
2014-02-06T14:10:50 < beaky> im making a smps!
2014-02-06T14:13:45 < zyp> dongs, would it be possible to change the order of wires from 500 to 1000?
2014-02-06T14:15:15 < zyp> this guy who wanted 20 boards and a bunch of wires for them now suddenly is talking about buying 75 boards instead
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2014-02-06T14:19:06 < beaky> wow
2014-02-06T14:19:22 < beaky> you are seling aquadcopter?
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2014-02-06T14:30:20 < qyx_> beaky pls
2014-02-06T14:30:26 < beaky> ?
2014-02-06T14:31:09 < beaky> im just interested in what cool projects you al are making
2014-02-06T14:31:34 < beaky> the stm32 has tons of potential, seeing as its one of the most high end mcus in the market
2014-02-06T14:32:15 < beaky> even compared to this monster: http://www.nxp.com/products/microcontrollers/cortex_m4/LPC4370FET256.html
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2014-02-06T14:33:11 < Steffanx> I wonder when ST will come with some m4 with coprocessor
2014-02-06T14:34:34 < beaky> i guess sooner than later, seeing as how the modern trend is multicore processing
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2014-02-06T15:19:35 < dongs> zyp, yeah. does that mean another bag of fast connectors?
2014-02-06T15:19:43 < dongs> i'll ahve to figure it out before 8th
2014-02-06T15:19:58 < dongs> fuck can someone ban beaky
2014-02-06T15:20:00 < dongs> Steffanx: ^
2014-02-06T15:23:17 < beaky> why?
2014-02-06T15:27:52 < Steffanx> Just show him your wonderful ignore message dongs.
2014-02-06T15:28:42 < Steffanx> beaky, are you like flyback.. very well known all around freenode?
2014-02-06T15:31:19 < beaky> actually i dont know who flyback is
2014-02-06T15:32:29 < Steffanx> http://www.urbandictionary.com/define.php?term=flyback 1 and 2
2014-02-06T15:32:36 < zyp> dongs, yes
2014-02-06T15:32:40 < zyp> another 2000
2014-02-06T15:33:08 < Thorn> >dude, you are such a Flyback!
2014-02-06T15:33:14 < beaky> lol
2014-02-06T15:33:27 < dongs> Steffanx: fuck that shit.
2014-02-06T15:33:30 < dongs> i want it actually gone
2014-02-06T15:33:41 < beaky> "making death threats on Efnet since 1997" oh dear
2014-02-06T15:34:12 < beaky> im nothing like flyback i just want to use my stm32f3 to do stuff
2014-02-06T15:38:28 < gnomad> I wonder if beaky will be defined as "question bombing freenode since 2013"
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2014-02-06T15:48:37 < Steffanx> beaky, how did you get your name in the topic of #electronisc?
2014-02-06T15:49:21 < beaky> it all started when i was trying to make my smps
2014-02-06T15:49:37 < beaky> then one day it emitted some white smoke for some reason
2014-02-06T15:49:45 < beaky> so i said "why is there smoke"
2014-02-06T15:49:56 < beaky> and that somehow made it in the topic ^^
2014-02-06T15:50:12 < beaky> and over time that got changed to become "beaky does not exist"
2014-02-06T15:50:25 < beaky> and a few days later it became what it is now
2014-02-06T15:51:12 < beaky> hopefully my stm32f3-based smps wont smoke
2014-02-06T15:51:57 < Steffanx> ok goodluck.
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2014-02-06T16:15:05 < karlp> anyone know where on digikey these sorts of things owuld be for sale? http://dx.com/p/male-to-female-dupont-breadboard-jumper-wires-for-arduino-40-piece-pack-20cm-length-146935#.UvOYsOdGmak
2014-02-06T16:15:16 < karlp> closest I've found is: http://www.digikey.com/product-detail/en/H3ABT-10102-A4/H3ABT-10102-A4-ND/309933
2014-02-06T16:15:32 < karlp> the "prototyping - jumper wires" section doesn't have them
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2014-02-06T16:31:45 < karlp> zyp: interesting choice for nfc eval boards: http://uk.farnell.com/nxp/explore-nfc/add-on-board-nfc-for-raspberry/dp/2366201
2014-02-06T16:32:31 < Steffanx> i guess you really want the wires and dont bother to make some yourself karlp?
2014-02-06T16:32:39 < Steffanx> *dont want to bother
2014-02-06T16:33:19 < beaky> doesnt dx have some expedited shiping
2014-02-06T16:33:20 < zyp> karlp, interesing for who/what?
2014-02-06T16:34:05 < zyp> PN512 doesn't do ISO 15693 which is a requirement for my NFC project
2014-02-06T16:34:51 < zyp> seems to be a rather decent chip otherwise though, I have one sitting here on my desk for a workproject
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2014-02-06T16:44:00 < karlp> zyp: oh, sorry, missed that iso requirement,
2014-02-06T16:44:14 < karlp> was more curious about nxp's choice of making it an rpi addon board
2014-02-06T16:44:53 < zyp> that's a cheap way of making network-connected nfc readers for whatever purpose people might have for them
2014-02-06T16:48:08 < karlp> yeah, doesn't really seem like a normal choice for evalling the nfc chip itself though,
2014-02-06T16:48:34  * karlp shrugs, makes it more compact than dangling usb cables everywhere I guess.
2014-02-06T16:59:58 < jpa-> edmont: eh.. i almost checked that but then i thought "well that would be stupid" :)
2014-02-06T17:00:30 < edmont> :D
2014-02-06T17:01:09 < edmont> the problem is with the OLIMEX board documentation, it says the led is in PF10
2014-02-06T17:01:25 < edmont> and then it compiles without problems
2014-02-06T17:02:17 < jpa-> yeah.. i think the header files require setting some #define STM32L1_MD (can't remember exact) setting so that only the proper peripherals are included
2014-02-06T17:02:33 < jpa-> should be at the top of stm32l1xx.h
2014-02-06T17:07:01 < beaky> is CMSIS the offical library for stm32f3
2014-02-06T17:07:06 < beaky> or are there other ones
2014-02-06T17:11:48 < gxti> both of those are true
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2014-02-06T17:24:31 < beaky> i guess CMSIS is the way to go since that what mst examples i read are in
2014-02-06T17:27:38 < beaky> http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00068049.pdf
2014-02-06T17:27:44 < beaky> i guess this is the one
2014-02-06T17:33:09 < Laurenceb> http://www.daveakerman.com/wp-content/uploads/2013/11/P1080929-682x1024.jpg
2014-02-06T17:33:37 < beaky> wow what does it do?
2014-02-06T17:33:53 < Laurenceb> make him look like a loser nerd
2014-02-06T17:33:56 < beaky> looks like some raspberry pi project
2014-02-06T17:34:06 < Laurenceb> its a life logger
2014-02-06T17:34:13 < Laurenceb> just needs to say "no life"
2014-02-06T17:34:14 < Steffanx> To do it or not to do it, that is the question Laurenceb..
2014-02-06T17:34:27 < Steffanx> ( @ copy-> #highaltitude -> paste )
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2014-02-06T17:34:33 < beaky> a life watchdog seems like an awesome project... but a raspberry pi is overkill i think
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2014-02-06T17:35:29 < beaky> just a pulse detector to continuously reset some thingy which will stay LOW
2014-02-06T17:35:45 < beaky> and if it goes HIGH then it will transmit the signal to e.g. delete your hard drive
2014-02-06T17:36:21 < beaky> if only there was a microcontroller out there that could be powered from the human pulse...
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2014-02-06T17:38:52 < beaky> i know, i'll use a 555 timer
2014-02-06T17:38:58  * beaky now has two problems
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2014-02-06T18:17:08 < beaky> how fast can you toggle the gpios of the stm32f3
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2014-02-06T18:18:11 < edmont> do you know if all 21 adc channels can be wired simultaneously in this device? http://www.st.com/web/catalog/mmc/FM141/SC1544/SS1374/LN1041/PF253305 (STM32L152CC)
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2014-02-06T18:20:02 < gnomad> sure, but at very low sampling speeds
2014-02-06T18:20:48 < jpa-> not very low, but of course the multiplexing means that 21 channels is 1/21 samplerate of a single channel
2014-02-06T18:20:51 < edmont> i dont quite understand the mechanism
2014-02-06T18:21:13 < gnomad> all the channels are multiplexed onto a single a/d
2014-02-06T18:21:21 < jpa-> edmont: it has one ADC converter, and a switch that connects one channel at a time to it
2014-02-06T18:21:42 < jpa-> then you can switch the channel automatically to read all the channels
2014-02-06T18:21:59 < gxti> it's how pretty much all microcontroller ADCs work, although some have more converters
2014-02-06T18:22:34 < gxti> not 10+ though
2014-02-06T18:23:05 < edmont> i mean, not all the channel inputs are maped to the mcu pins
2014-02-06T18:23:31 < jpa-> check the pin mappings for your package to see how many are on the pins
2014-02-06T18:24:14 < gnomad> some of the inputs can be mapped to system voltage and core temp on some parts....
2014-02-06T18:24:41 < gxti> yeah but i don't imagine those are included in the "up to 25 channels". there should be 25 actual ADC-capable pins, but only on the biggest package
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2014-02-06T18:26:27 < jpa-> looks like the 48-pin package has 13 available on pins
2014-02-06T18:27:01 < edmont> yep
2014-02-06T18:27:20 < edmont> where do i connect the remaining 8?
2014-02-06T18:27:51 < jpa-> you need a bigger package if you want to do that
2014-02-06T18:27:52 < karlp> on a 48pin package, you don't
2014-02-06T18:27:58 < gnomad> that's where the "up to" comes into play....
2014-02-06T18:28:40 < edmont> then the parametric search is wrong: http://www.st.com/web/catalog/mmc/FM141/SC1544/SS1374
2014-02-06T18:29:26 < effractur> y]
2014-02-06T18:29:54 < jpa-> somewhat funny indeed
2014-02-06T18:29:59 < jpa-> better always verify in datasheet
2014-02-06T18:31:14 < gnomad> so, you trust web developers and the marketing staff, do you?
2014-02-06T18:31:27 < edmont> but look at the reference manual (27 MB): http://www.st.com/st-web-ui/static/active/en/resource/technical/document/reference_manual/CD00240193.pdf
2014-02-06T18:31:46 < jpa-> edmont: if you check the table "2.1 Device Overview" in the datasheet, it says 14 for STM32L15xCC
2014-02-06T18:31:47 < edmont> page 152
2014-02-06T18:32:16 < karlp> don't trust that either, it includes the temp sensor ;)
2014-02-06T18:32:25 < karlp> you need to count the pins in the pinout section by hand
2014-02-06T18:32:35 < karlp> and compare to the "package" column to check whether it's there or not
2014-02-06T18:32:41 < karlp> it's tedious
2014-02-06T18:33:04 < karlp> 13 on the 48 sounds about like what I remmembered,
2014-02-06T18:33:16 < karlp> I'm using 12 external ones on an l151c6 at least
2014-02-06T18:33:46 < edmont> ok, thanks guys, that is what i thought but the parametric search confused me
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2014-02-06T18:54:23 < beaky> how do i make a makefile for stm32f3
2014-02-06T18:54:40 < gnomad> vi!
2014-02-06T18:54:53 < zyp> beaky, by lots of swearing
2014-02-06T18:55:28 < gnomad> actually you start by copying someone elses...
2014-02-06T18:55:51 < Laurenceb> works for me
2014-02-06T18:55:59 < jpa-> you can copy a sconscript instead
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2014-02-06T19:04:47 < beaky> https://github.com/mblythe86/stm32f3-discovery-basic-template i got this one
2014-02-06T19:06:11 < trepidaciousMBR> Using SDRAM on the STM32F42X, I guess it is just assumed that when you perform byte reads/writes, the MCU handles the byte masks to do that right?
2014-02-06T19:06:33 < trepidaciousMBR> Seeing a weird error where non-byte accesses work fine on a 16bit SDRAM, but byte accesses fail
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2014-02-06T19:30:20 < jpa-> trepidaciousMBR: as long as you have configured the SDRAM registers correctly, yes, the byte lanes should be used
2014-02-06T19:31:01 < jpa-> unless you do something like emeb and mess up the pin configs ;)
2014-02-06T19:31:44 < emeb> :P
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2014-02-06T19:34:51 < beaky> hello
2014-02-06T19:35:12 < beaky> so i type "make debug" but nothing happens
2014-02-06T19:35:13 < beaky> why is that?
2014-02-06T19:36:09 < madis_> make debug only works on weekends
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2014-02-06T19:39:42 < fbs> you got to  'rm -rf /; make debug'
2014-02-06T19:41:45 < beaky> it says permission denied
2014-02-06T19:42:40 < madis_> login as root and try again
2014-02-06T19:42:55 < fbs> try  'rm -rf ~; make debug' first
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2014-02-06T19:43:30 < madis_> its not supposed to say permission denied with -f
2014-02-06T19:43:42 < beaky> im using zsh
2014-02-06T19:44:39 < gxti> i'm sorry to hear that
2014-02-06T19:44:40 < Steffanx> emeb, that was the problem you had a while ago? Wrong pin config?
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2014-02-06T19:45:37 < Steffanx> hmpf
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2014-02-06T19:46:11 < emeb> Steffanx: basically yeah - accidentally used one of the SDRAM byte lane outputs as a realtime diagnostic.
2014-02-06T19:46:24 < emeb> Pro-tip: don't do that. :)
2014-02-06T19:52:04 < Steffanx> oh heh, at least it was just that :)
2014-02-06T19:54:39 < emeb> yes - as problems go that was an easy fix.
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2014-02-06T20:21:38 < beaky> hello
2014-02-06T20:21:46 < beaky> whats teh togglespeed of the gpios ont he stm32f3
2014-02-06T20:22:30 < emeb> http://26-26-54.hardwarebug.org/30
2014-02-06T20:22:34 < jpa-> datasheet will tell
2014-02-06T20:22:53 < beaky> i read somewhere (forgot which document) that max togglespeed is only 18Mhz
2014-02-06T20:23:03 < beaky> but how come?
2014-02-06T20:23:07 < jpa-> it depends on what "togglespeed" even means?
2014-02-06T20:23:16 < beaky> setting GPIO on, then OFF
2014-02-06T20:23:20 < jpa-> by software?
2014-02-06T20:23:30 < beaky> yes
2014-02-06T20:23:32 < jpa-> why would anyone do that when you have all kinds of hardware to do it?
2014-02-06T20:23:56 < beaky> i want to bitbang my own adhoc protocl
2014-02-06T20:24:02 < jpa-> even then
2014-02-06T20:24:17 < jpa-> do it with dma, if it really doesn't fit any other peripheral
2014-02-06T20:24:19 < beaky> so theres some kind of shit registers on the stm32f3 that will help with that?
2014-02-06T20:24:20 < beaky> oh
2014-02-06T20:24:26 < beaky> i have to check out this DMA thing
2014-02-06T20:24:44 < jpa-> though 18MHz sounds about right if the processor is running at 72MHz
2014-02-06T20:25:13 < beaky> i thought stm32f3 has single-cycle gpio or something
2014-02-06T20:25:31 < jpa-> why did you think that?
2014-02-06T20:25:44 < beaky> avr always had single-cycle gpio
2014-02-06T20:25:57 < beaky> and i thought it was same on cortex
2014-02-06T20:26:25 < jpa-> well, it isn't really; though i'm not sure if the latency is specified anywhere
2014-02-06T20:26:32 < beaky> ah
2014-02-06T20:26:54  * beaky 's dream of bitbanging megabit ethernet  with the stm32f3 has just died
2014-02-06T20:27:14 < karlp> you can still dream
2014-02-06T20:27:26 < jpa-> use the SPI peripheral ;)
2014-02-06T20:27:30 < beaky> why dream when you can reality!
2014-02-06T20:27:56 < Steffanx> 10mbit is still possible not?
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2014-02-06T20:28:18 < jpa-> transmission is always trivial
2014-02-06T20:28:20 < beaky> it is
2014-02-06T20:28:23 < jpa-> it's the reception that is the trouble
2014-02-06T20:28:35 < jpa-> you usually need atleast 4x rate to be able to phase-lock
2014-02-06T20:28:47 < beaky> bitbang half-duplex ethernet sounds like not worth it. ill just buy this SPI chip that does it
2014-02-06T20:29:02 < Steffanx> or buy a real phy that helps you with 100mbit
2014-02-06T20:29:09 < Steffanx> + stm32 than has the mac.
2014-02-06T20:29:17 < Steffanx> *that
2014-02-06T20:29:21 < gxti> that might break his brain Steffanx
2014-02-06T20:29:31 < beaky> what PHY do you guys recomend?
2014-02-06T20:29:34 < jpa-> though routing 20 pins is annoying, i'd probably go with a spi chip also
2014-02-06T20:29:36 < beaky> maybe ST has something for it
2014-02-06T20:29:51 < Steffanx> enc28j60 jpa-? :)
2014-02-06T20:30:03 < emeb> why 20 pins?
2014-02-06T20:30:18 < beaky> this spi chip: http://www.wiznet.co.kr/Sub_Modules/en/product/Product_Detail.asp?cate1=&cate2=&cate3=&pid=1193
2014-02-06T20:30:22 < jpa-> Steffanx: maybe, if speed is not important
2014-02-06T20:30:22 < zyp> Steffanx, that's not a phy
2014-02-06T20:30:45 < Steffanx> no it isnt zyp, but it does do spi.
2014-02-06T20:30:53 < beaky> yeah enc28j60 is more like spi to ethernet bridge than PHY
2014-02-06T20:32:26 < beaky> i guess i dont need fast ethernet for my application so i will use that spi chip
2014-02-06T20:32:40 < beaky> (my application is ethernet-controled smps)
2014-02-06T20:32:59 < Steffanx> Whoa, its getting more complicated every day.
2014-02-06T20:33:20 < Steffanx> Don't forget bluetooth beaky
2014-02-06T20:33:27 < beaky> i haven't even got the smps part figured out :( when i plug a load to it for some reason it doesnt output power
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2014-02-06T20:33:45 < gxti> well at least you tried it i guess
2014-02-06T20:33:46 < beaky> but it outputs voltage corectly under no load
2014-02-06T20:34:57 < beaky> stm32f3 seems like the right chip for the job
2014-02-06T20:35:57 < gxti> sure. it's got a nice high-res adc and dac.
2014-02-06T20:36:15 < beaky> maybe i can use the analog comparators for curent-mode control and stuf
2014-02-06T20:40:58 < qyx_> smps with ethernet?
2014-02-06T20:41:02 < qyx_> am i missing something?
2014-02-06T20:41:29 < Steffanx> This guy is even annoying dongs.. he's pro qyx_ :P
2014-02-06T20:42:07 < beaky> qyx_: yes with ethernet data logging
2014-02-06T20:42:08 < gxti> lots of things annoy dongs
2014-02-06T20:42:30 < Steffanx> but it doesnt happen very often that is a "person" gxti
2014-02-06T20:42:31 < beaky> qyx_: also you can configure the control loop from ethernet
2014-02-06T20:42:37 < gxti> hmm, i bought a ESD mat that i thought would ship from canada but it came from niagara falls instead. must have snuck over the border on a moose to ship it.
2014-02-06T20:43:01 < beaky> isnt niagara falls in canada?
2014-02-06T20:43:18 < gxti> it's on the border
2014-02-06T20:43:24 < beaky> ah
2014-02-06T20:43:38 < gxti> there is a town called that on both sides
2014-02-06T20:43:52 < qyx_> will i be considered pro when i annoy dongs?
2014-02-06T20:47:31 < Steffanx> for sur qyx_
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2014-02-06T20:47:39 < Steffanx> pro troll that is
2014-02-06T20:49:28 < gnomad> only when you get paid to do so...
2014-02-06T20:51:24 < fbs> who was using c++ again?
2014-02-06T20:51:44 < fbs> im looking for the glue code used
2014-02-06T20:53:04 < qyx_> beaky: and what will be the purpose of this eth-controlled smps?
2014-02-06T20:53:22 < fbs> powering web3.0 ofc
2014-02-06T20:53:34 < gxti> call it cloudvolts or something stupid
2014-02-06T20:54:06 < beaky> qyx_: to charge my 12v batteru
2014-02-06T20:54:13 < gxti> use ipud touch interface to set current limit
2014-02-06T20:54:41 < beaky> cloudvolts hahaha
2014-02-06T20:55:05 < gnomad> it sounds like beaky is after a mppt solar charge controller...
2014-02-06T20:56:15 < beaky> yes i need to power it from sun
2014-02-06T20:56:27 < beaky> then the stm32f3 will conditio it to charge batery
2014-02-06T20:56:57 < gxti> sounds pretty silly
2014-02-06T20:57:28 < beaky> why is it silly
2014-02-06T20:57:44 < qyx_> actually eth connected solar charger wouldn't be that bad idea
2014-02-06T20:58:05 < gxti> not because it's a completely dumb idea, more because it seems like you haven't thought it through
2014-02-06T20:58:10 < gnomad> not really...
2014-02-06T20:58:17 < gnomad> http://ww1.microchip.com/downloads/en/AppNotes/00001521A.pdf?from=rss
2014-02-06T20:58:33 < gnomad> http://ww1.microchip.com/downloads/en/AppNotes/01211A.pdf
2014-02-06T20:59:46 < beaky> yea seems like a briliant idea
2014-02-06T21:00:07 < beaky> if a big company like microchip has
2014-02-06T21:00:25 < gxti> that's not the right conclusion
2014-02-06T21:00:41 < gxti> the right conclusion is you're probably better off buying a MPPT charger off ebay :p
2014-02-06T21:00:59 < gxti> and make your thing just be a battery gauge/monitor
2014-02-06T21:01:09 < gxti> harder to screw up
2014-02-06T21:01:13 < qyx_> or use some ready-made chips and just control/monitor them from stm32
2014-02-06T21:01:20 < qyx_> yep
2014-02-06T21:01:43 < gnomad> that would depend entirely on what your goals are...
2014-02-06T21:02:16 < qyx_> i would definitelly start with something simple
2014-02-06T21:02:19 < beaky> sure i could buy an mppt charger from ebay, but thats no fun than learning stm32f3 :D
2014-02-06T21:02:21 < gnomad> it is a rather good project for learning about mixed-signal electronics design
2014-02-06T21:02:36 < beaky> plus those ebay chargers suck and are overpriced
2014-02-06T21:03:04 < gxti> ha
2014-02-06T21:03:19 < gnomad> the price of commercial mppt controllers has started dropping dramatically as of about a year or two ago.
2014-02-06T21:03:45 < gnomad> I expect it will be another year or two before they bottom out
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2014-02-06T21:05:52 < beaky> my project is going great atm: still can't figure out how to run the debugger from linux :(
2014-02-06T21:06:00 < beaky> i type "make debug" and nothing happens
2014-02-06T21:06:25 < beaky> oh i think i know what it is
2014-02-06T21:06:58 < fbs> anyone tried compiling the arm gcc embedded on launchpad on a 64b system?
2014-02-06T21:07:17 < beaky> https://forum.sparkfun.com/viewtopic.php?f=18&t=33495
2014-02-06T21:07:35 < fbs> what tools are you using?
2014-02-06T21:08:01 < fbs> what is in the 'debug' target in the makefile?
2014-02-06T21:08:27 < beaky> $(GDB) -x extra/gdb_cmds $(PROJ_NAME).elf
2014-02-06T21:08:41 < beaky> oh wait
2014-02-06T21:08:43 < fbs> and gdb doesnt start?
2014-02-06T21:08:44 < beaky> its this: openocd -f $(OPENOCD_BOARD_DIR)/stm32f3discovery.cfg -f $(OPENOCD_PROC_FILE) -c "stm_flash `pwd`/$(PROJ_NAME).bin" -c shutdown
2014-02-06T21:08:52 < beaky> openocd says "open failed"
2014-02-06T21:09:07 < fbs> so something is happening -___'
2014-02-06T21:09:30 < fbs> well find out if it can fine the config files
2014-02-06T21:09:37 < fbs> if you shit shows up in dmesg
2014-02-06T21:09:46 < qyx_> hm, that bug
2014-02-06T21:09:46 < fbs> also that cant be the debug line
2014-02-06T21:10:00 < fbs> since it flashes and shuts down
2014-02-06T21:10:00 < qyx_> i had the same issue, stlink v2, F4 disco, USB3 ports
2014-02-06T21:10:15 < qyx_> i mean the one on the spakrkfun link
2014-02-06T21:10:17 < Steffanx> i had the same issue with an outdated openocd
2014-02-06T21:10:31 < Steffanx> and also when i had the swd jumpers removed.
2014-02-06T21:10:36 < Steffanx> ( at least a similar error )
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2014-02-06T21:27:04 < beaky> oh
2014-02-06T21:27:11 < beaky> seems i need to use sudo
2014-02-06T21:27:14 < beaky> to get stlink to work
2014-02-06T21:28:52 < PaulFertser> beaky: better use udev rules file, there's one suitable in contrib/
2014-02-06T21:29:05 < PaulFertser> beaky: and add yourself to plugdev group if you haven't already.
2014-02-06T21:29:27 < beaky> ah
2014-02-06T21:31:08 < PaulFertser> beaky: also, current openocd has -c "program /path/to/your/project.elf" helper which is way nicer than some custom stm_flash
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2014-02-06T21:33:32 < zyp> PaulFertser, about time
2014-02-06T21:36:30 < PaulFertser> zyp: and one can optionally add "verify" and/or "reset" to that line, so yes, it's a nice helper.
2014-02-06T21:37:53 < PaulFertser> Properly documented in the official manual too
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2014-02-06T23:57:04 < fbs> ah nice
--- Day changed Fri Feb 07 2014
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2014-02-07T00:14:02 < beaky> hello
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2014-02-07T01:50:33 < karlp> zyp: do you know of anything special for usb3 ports? it's the only difference I can see between the two comptuers that work/don't work for my usb device: http://paste.fedoraproject.org/75156/91730565/
2014-02-07T01:52:25 < karlp> I have two usb ports on the back of the computer labelled "usb3" and lsusb show sa usb 3 root hub, but never seems to connect to anything there
2014-02-07T01:55:32 < beaky> what does AHB and APB and those other acronyms of the RCC stad for?
2014-02-07T01:56:27 < Thorn> 1st hit in google http://en.wikipedia.org/wiki/Advanced_Microcontroller_Bus_Architecture
2014-02-07T01:56:27 < qyx_> i would suggest reading wiki
2014-02-07T01:56:46 < beaky> theres an stm32 wiki?
2014-02-07T01:57:43 < qyx_> i would suggest reading what Thorn pasted
2014-02-07T01:59:00 < beaky> what programing way do you guys recomend? Flipping bits on the CMSIS definitions, or Using that STM peripheral library thing?
2014-02-07T01:59:20 < beaky> im used to flipping bits because thats how it was done in avr
2014-02-07T02:00:55 < Thorn> avr peripherals are probably much simpler to use due to being more primitive
2014-02-07T02:01:50 < Thorn> you can certainly(?) use e.g. gpio without stdperiph but good luck implementing initial RCC setup
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2014-02-07T02:10:55 < ds2> it isn't that painful
2014-02-07T02:10:58 < ds2> I did that
2014-02-07T02:18:24 < Thorn> /boot is full or initrd generation failed for some other reason
2014-02-07T02:19:07 < qyx_> you are doing it wrong
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2014-02-07T02:26:56 < Thorn> why are there no messages from R2COM in http://xob.kapsi.fi/~jpa/stm32/2014-02.log ?
2014-02-07T02:27:16 < GargantuaSauce> not even microsoft's finest can stand up to destructive user error
2014-02-07T02:29:41 < GargantuaSauce> i'd suggest the use of something robust like a graphing calculator but you'd probably run that over with a car and blame its design for its failure
2014-02-07T02:29:49 < GargantuaSauce> now quit complaining and go fix your boot ramdisk
2014-02-07T02:29:52 < Steffanx> Thorn, because jpa- ignores R2COM. :P
2014-02-07T02:30:28 < Steffanx> and irssi does not log the messages of ignored people
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2014-02-07T02:45:40 < Thorn> there was a rather famous win 7 update a few months ago that made many PCs unusable
2014-02-07T02:48:40 < GargantuaSauce> i have had windows break on update on more than one occasion
2014-02-07T02:49:16 < GargantuaSauce> both were before i started using linux
2014-02-07T02:50:22 < Steffanx> R2COM and dongs drink tea together often?
2014-02-07T02:51:44 < qyx_> all os'es break on regular basis if you are rude to them
2014-02-07T02:52:10 < qyx_> i try keeping my environment sane and make changes with reason
2014-02-07T02:52:33 < qyx_> and don't have problems with multi-months uptimes on my notebook which i use on a regular basis
2014-02-07T02:52:44 < qyx_> meh, repeating myself
2014-02-07T03:00:25 < zyp> karlp, obvious difference is that usb3 ports are handled by xhci while usb2 ports are handled by echi/ohci
2014-02-07T03:00:53 < zyp> karlp, which of them do work?
2014-02-07T03:02:06 < zyp> hmm
2014-02-07T03:02:15 < zyp> «unable to get BOS descriptor» wonder if it says that for all devices
2014-02-07T03:02:31 < zyp> because BOS is a new feature of usb 2.1 or greater
2014-02-07T03:02:37 < zyp> apparently
2014-02-07T03:03:29 < beaky> yes!!
2014-02-07T03:03:33 < beaky> ive done it!!!!
2014-02-07T03:03:52 < zyp> 00:52:25 < karlp> I have two usb ports on the back of the computer labelled "usb3" and lsusb show sa usb 3 root hub, but never seems to connect to anything there
2014-02-07T03:04:22 < zyp> that's because they show up logically as one usb2 root hub and one usb3 root hub, and devices show up under the one responsible for the speed they are connected with
2014-02-07T03:04:23 < beaky> after 5 hours of wrestling i have managed to turn  a led on: http://ideone.com/bsOGwb
2014-02-07T03:04:31 < beaky> is ths the right way to do it?
2014-02-07T03:04:52 < gxti> did it work?
2014-02-07T03:05:04 < gxti> if so then yes
2014-02-07T03:05:21 < zyp> karlp, keep in mind that usb3 doesn't just replace usb2, the new lanes are added in parallel to the old ones, so a device could technically use both at once
2014-02-07T03:05:37 < beaky> it worked
2014-02-07T03:09:41 < GargantuaSauce> beaky: personally i think those enums of every bit are fucking useless compared to 1<<x but otherwise good start
2014-02-07T03:10:06 < GargantuaSauce> now make it flash!
2014-02-07T03:10:39 < zyp> GargantuaSauce, good to hear somebody agrees with me :)
2014-02-07T03:10:41 < beaky> yes the enums are confusing
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2014-02-07T03:12:04 < zyp> GargantuaSauce, my opinion is that if I have to keep the reference manual at hand to look up the bit names, I might as well look up the bit numbers at the same time
2014-02-07T03:14:01 < GargantuaSauce> heh I usually don't quite go that far
2014-02-07T03:14:02 < zyp> better to spend the time making a higher level abstraction layer
2014-02-07T03:14:21 < GargantuaSauce> but i still haven't bothered with that either
2014-02-07T03:15:06 < zyp> I'm pretty happy with RCC.enable(RCC.GPIOE); GPIOE[15].set_mode(Pin::Output); GPIOE[15].set();
2014-02-07T03:15:25 < zyp> which does the same as the pasted code, except the speed setting
2014-02-07T03:15:36 < zyp> so far I haven't had to care about speed, so I don't think I have a method for that yet
2014-02-07T03:17:19 < zyp> also, I don't have a fucking clue of what bit OSPEEDR15 actually means without looking it up :)
2014-02-07T03:18:15 < beaky> wow how do i do RCC.enable()
2014-02-07T03:18:30 < zyp> magic
2014-02-07T03:19:05 < zyp> http://cgit.jvnv.net/laks/tree/rcc/rcc.h <- my implementation looks like this, but it's C++
2014-02-07T03:19:18 < beaky> when i type RCC.enable() i get a red squiggly lines
2014-02-07T03:19:20 < zyp> if you want a C take on it, I believe libopencm3 now have a similar API
2014-02-07T03:19:33 < zyp> yes, of course, I made it myself
2014-02-07T03:19:51 < zyp> I'm not using stdperiphlib, I wrote everything from scratch
2014-02-07T03:19:57 < beaky> wow i wish i had an c++ api to stm32
2014-02-07T03:20:21 < beaky> i want to replace the delay with timer peripheral
2014-02-07T03:20:26 < beaky> how do i do that
2014-02-07T03:20:49 < zyp> http://cgit.jvnv.net/laks/tree/os/time.h <- like this, perhaps?
2014-02-07T03:21:13 < zyp> http://cgit.jvnv.net/laks/tree/os/thread.h?h=scheduler_improvements <- or possibly like this
2014-02-07T03:21:34 < GargantuaSauce> blinky first
2014-02-07T03:21:35 < GargantuaSauce> HAL later
2014-02-07T03:21:47 < zyp> :)
2014-02-07T03:21:53 < beaky> lol
2014-02-07T03:22:03 < beaky> so i should use this SysTick thing
2014-02-07T03:22:11 < beaky> or do i use that 32-bit counter
2014-02-07T03:22:18 < zyp> that's up to you
2014-02-07T03:22:32 < zyp> I'm using either in different cases
2014-02-07T03:23:01 < zyp> I'm using systick to handle timing in the scheduler, leaving all the other timers free for the application
2014-02-07T03:23:12 < beaky> right i guess systick is best
2014-02-07T03:23:16 < zyp> but an application may use the other timers for delays if suited
2014-02-07T03:23:40 < beaky> maybe i should reserve those other timer for when i need to bitbang usb or ethernet
2014-02-07T03:23:45 < beaky> or pwms
2014-02-07T03:24:22 < zyp> http://cgit.jvnv.net/suzumebachi/tree/main.cpp#n358 <- my quadrotor code is using TIM8 for timing the main loop, because it's also used to output pwm
2014-02-07T03:24:56 < Thorn> >bitbang usb or ethernet
2014-02-07T03:24:57 < zyp> it makes sense because that loop should do one update for each pwm period
2014-02-07T03:25:15 < Thorn> if you use an rtos it will want systick for itself
2014-02-07T03:25:18 < qyx_> wut friend keyword
2014-02-07T03:26:20 < beaky> ok i will read the example code on the official stm32 blinkenled program and see how the pros at sgs thomson did it
2014-02-07T03:26:31 < beaky> i hope they didn't use something like my delay :D
2014-02-07T03:26:49 < zyp> qyx_, where?
2014-02-07T03:27:16 < qyx_> in your Thread
2014-02-07T03:27:18 < qyx_> i dont even c++
2014-02-07T03:27:26 < zyp> ah, there
2014-02-07T03:27:55 < beaky> oh they use SysTick
2014-02-07T03:28:13 < zyp> qyx_, it gives switch_context() access to private members of the class
2014-02-07T03:28:34 < GargantuaSauce> more like friend with benefits
2014-02-07T03:28:38 < zyp> :)
2014-02-07T03:28:54 < GargantuaSauce> i feel the need to address your notion of bitbanging usb or ethernet beaky
2014-02-07T03:28:55 < zyp> «you can touch my private member if you want»
2014-02-07T03:28:57 < GargantuaSauce> there are peripherals for those
2014-02-07T03:29:20 < GargantuaSauce> using them will result in much higher performance and less pain
2014-02-07T03:29:47 < zyp> well, if you're insane you could probably bitbang LS USB without too much hassle
2014-02-07T03:29:54 < zyp> it's been done on AVR, after all
2014-02-07T03:30:00 < zyp> maybe even HS would be possible
2014-02-07T03:30:02 < beaky> i wish there was ethernet on stm32f303vct6
2014-02-07T03:30:20 < zyp> why=
2014-02-07T03:30:34 < zyp> if you want ethernet you pick f407 instead
2014-02-07T03:30:39 < zyp> or f107 if you're cheap
2014-02-07T03:31:51 < zyp> and now that f072 added usb to the f0 series, I think every family have parts with an usb controller
2014-02-07T03:33:37 < Thorn> phy + marjack + possibly 50MHz oscillator isn't going to be very cheap anyway, so saving money on the mcu is hardly justified unless you're designing for volume production which you are not
2014-02-07T03:33:47 < Thorn> *magjack
2014-02-07T03:35:03 < dongs> sup pros
2014-02-07T03:35:10 < dongs> why beaky not banned
2014-02-07T03:35:12 < qyx_> sup dongs
2014-02-07T03:35:31 < qyx_> i was told i will be a real pro when i manage to annoy you somehow
2014-02-07T03:35:42 < dongs> pretty much
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2014-02-07T03:41:08 < gxti> dongs: assembled 3 gps thingies, so far everything is good
2014-02-07T03:41:17 < gxti> will do the rest this weekend probably
2014-02-07T03:41:25 < dongs> coo
2014-02-07T03:42:13 < beaky> why do i need the startup assembly file in my c project
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2014-02-07T03:43:04 < zyp> because you have no c startup file
2014-02-07T03:43:24 < beaky> oh
2014-02-07T03:43:35 < beaky> how do i make one
2014-02-07T03:43:58 < zyp> you have to have startup code to initialize .data and .bss, and traditionally they were written in assembly
2014-02-07T03:44:01 < gxti> you don't worry about it until you understand more (well, anything) about how a startup file works :p
2014-02-07T03:44:35 < zyp> because traditionally at startup even the stack pointer tends to not be initialized, which makes it pretty much impossible to run c code until it has been set
2014-02-07T03:45:26 < zyp> but on cortex-m it is, so if you're careful, you can actually write it in c
2014-02-07T03:45:50 < aadamson> stack, interrupt jump tables, .bss, .text, there are all kinds of things that get setup in the startup file, clocks get initialized, busses initialized, etc
2014-02-07T03:46:12 < aadamson> the new templates in the eclipse plug in provide startup as a C source
2014-02-07T03:46:25 < aadamson> but most just use the one that st provides in the std perif library
2014-02-07T03:46:27 < gxti> i wouldn't classify peripheral stuff as "startup file" material, it's really just the C environment crap
2014-02-07T03:47:06 < zyp> I used to start HSE and switch to PLL as the first point of startup
2014-02-07T03:47:07 < dongs> i would classify beaky as unfunny troll material
2014-02-07T03:47:26 < zyp> so that .data and .bss init would run faster
2014-02-07T03:47:26 < aadamson> hehe... yep
2014-02-07T03:47:53 < aadamson> yeah didn't mean busses as in periphs... sorry, probably used the wrong term
2014-02-07T03:47:59 < dongs> zyp, heh.
2014-02-07T03:48:00 < Thorn> my C startup for lpc11c2x http://paste.ofcode.org/DfvwMsMEzamwDza24XwkJ8
2014-02-07T03:48:19 < dongs> jebus
2014-02-07T03:48:20 < dongs> so much gcc
2014-02-07T03:49:17 < aadamson> that looks more like the st system.xxx.c file as opposed to the .S file
2014-02-07T03:50:29 < aadamson> hey, speaking of which, anyone got any good basic *power down* or low power code I can stare at... trying to figure out how best to put a processor to sleep and then wake it up.
2014-02-07T03:51:46 < zyp> how low power are you looking for?
2014-02-07T03:52:01 < zyp> only stopping cpu, or shutting down larger parts of the system?
2014-02-07T03:52:22 < zyp> when do you want to power down, and what should trigger a wakeup?
2014-02-07T03:53:06 < aadamson> I'd like to go to tickle current mode and have serial interrupt wake it up is probably easiest approach... external gps will send 10hz, but between, I'd like to be sleeping to save battery
2014-02-07T03:53:38 < zyp> keep in mind that the lowest power modes even shut down the internal memory
2014-02-07T03:53:47 < aadamson> power down will be force between *processing*, its not in task critical mode during much of this
2014-02-07T03:53:55 < aadamson> guess I don't wanna go that far...
2014-02-07T03:54:38 < zyp> but anyway, you'll probably want to start by looking into stopping the cpu, I believe all the other modes are just configured as what more happens as the cpu stops
2014-02-07T03:55:02 < zyp> stopping the cpu is easy; there are two ways
2014-02-07T03:55:09 < zyp> the first is the wfi instructions
2014-02-07T03:55:15 < zyp> «wait for interrupt»
2014-02-07T03:55:33 < zyp> which is pretty obvious
2014-02-07T03:56:19 < zyp> you execute that, cpu stops, sleeps until it gets an interrupt, processes that, then continues from where it left off
2014-02-07T03:56:45 < zyp> then there is a «SLEEPONEXIT» bit in one of the system registers
2014-02-07T03:56:58 < beaky> why does stm32f3 gpio take two clock cycle to togle
2014-02-07T03:57:04 < zyp> which means «go back to sleep after processing all pending interrupts»
2014-02-07T03:57:36 < dongs> http://www.wtop.com/1228/3557725/School-serves-up-stereotypes-for-black-history-lunch-apologizes
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2014-02-07T03:58:49 < aadamson> zyp, ah ok, so you could actually come up with a combination of both depending on what you want to do... makes sense
2014-02-07T03:59:39 < zyp> yep
2014-02-07T03:59:56 < zyp> http://cgit.jvnv.net/laks/tree/interrupt/fault.cpp?h=scheduler_improvements <- my improved thread scheduler is using it
2014-02-07T04:00:47 < aadamson> ok, excellent that's a start... thanks!
2014-02-07T04:00:51 < zyp> since switch_context() always executes from within an interrupt handler, using WFI doesn't make sense
2014-02-07T04:01:02 < zyp> also, I haven't really tested that code much yet
2014-02-07T04:01:48 < zyp> I wrote it last summer when I was bored on a 10h flight, but I haven't put it to use in any projects yet
2014-02-07T04:01:59 < aadamson> yeah I can put it to sleep from the loop at main, and I just need it to wake up and process when an uart interrpt occurs, it will then check to see what else it needs to do and go back to sleep from main if nothing else
2014-02-07T04:02:06 < zyp> the old scheduler code that I'm still using has no sleep support since it has no notion of threads being ready or not
2014-02-07T04:02:18 < aadamson> that's really the only *event* that I need to worry about
2014-02-07T04:02:30 < zyp> yeah, that should be easy enough
2014-02-07T04:02:56 < zyp> or if the uart interrupt handlers determines there is nothing to do yet it can just set SLEEPONEXIT
2014-02-07T04:03:15 < aadamson> yes, I see how both can be used in different ways... makes sense.
2014-02-07T04:04:04 < aadamson> on the AVR, there are peripherals you can force to sleep separately, is same true on thes stm?  or if the cpu is sleeping everything is powered down to it's lowest power keeping ram intact?
2014-02-07T04:04:33 < aadamson> gotta put the dogs to bed... I'll catch up in a few... thanks in advance!
2014-02-07T04:04:34 < zyp> the same is true, to an even higher degree
2014-02-07T04:04:44 < zyp> RCC is handling all that
2014-02-07T04:05:08 < zyp> I believe you can specify in some of the RCC registers exactly which peripherals should be powered down and which should remain on
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2014-02-07T04:09:23 < aadamson> ok, so a) turn off what's not needed; b) use the wfi/sleeponexit to put the cpu to sleep between processing cycles...
2014-02-07T04:12:05 < zyp> no, a) read the reference manual on low power modes
2014-02-07T04:12:05 < zyp> ;)
2014-02-07T04:12:31 < aadamson> yeah doing that now... :)
2014-02-07T04:12:57 < aadamson> also trying to find the discovery manual as it appears there are some examples... :)
2014-02-07T04:16:58 < beaky> is it possible to use resistor dividers to divide the high common-mode input voltages
2014-02-07T04:17:01 < beaky> oops wrong channel
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2014-02-07T04:44:06 < aadamson> zyp, if still here... so using wfi, i guess if you disabled all the clocks, then you'd have to re-enable any peripheral that you might use or not?  in the example they init the RCC's, setup the pin for the button, then disable all the RCC's, but on wakeup, they re-init the led that they are blinking... which caused me to wonder
2014-02-07T04:44:17 < aadamson> that must the the result of disabling all the RCC's?
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2014-02-07T04:58:27 < dongs> lol my free itron VFD arrived
2014-02-07T04:58:33 < dongs> aadamson: zyp is in norgay, hes busy slwwping
2014-02-07T04:58:42 < dongs> and WFI is off.
2014-02-07T04:59:20 < dongs> hoyl shit this vfd is amazeballs
2014-02-07T04:59:43 < aadamson> yeah, figured he went to bed already ... and thanks I found some stuff on  line to make my head hurt reading it...
2014-02-07T04:59:52 < aadamson> hehe, yeah those are pretty cool
2014-02-07T05:00:35 < aadamson> which one did you get and for what?
2014-02-07T05:00:54 < dongs> http://i.imgur.com/Y2zJ47p.jpg
2014-02-07T05:00:59 < dongs> free sample, tehy give out some new shit every month
2014-02-07T05:01:27 < aadamson> very cool
2014-02-07T05:01:59 < gnomad> dongs: is that the current one?
2014-02-07T05:02:21 < gnomad> I picked up the 128x32 dot matrix one a while back.
2014-02-07T05:02:23 < dongs> i think i ordered in december or so
2014-02-07T05:02:26 < dongs> yeah, they kepe changing
2014-02-07T05:02:38 < dongs> i ordered 12/31
2014-02-07T05:02:43 < gxti> mmm sexy
2014-02-07T05:02:52 < dongs> shipped to alaska so it got delayed a bit until it got bounced back to me
2014-02-07T05:03:19 < gnomad> why alaska?
2014-02-07T05:05:30 < dongs> they dont ship to jp i guess
2014-02-07T05:05:41 < dongs> http://www.noritake-elec.com/evalkit-sample.php
2014-02-07T05:05:50 < dongs> ooo
2014-02-07T05:05:54 < dongs> their current one is 112x16
2014-02-07T05:05:56 < dongs> dotmatrix
2014-02-07T05:05:57 < dongs> fuu
2014-02-07T05:06:08 < dongs> o wait nmo
2014-02-07T05:06:11 < dongs> its just ended anyway.
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2014-02-07T05:16:58 < aadamson> dongs, I figured out a starting point, sleep mode with no changes to peripheral clocks... the examples turned them off, but thats only to lower power further... should go from approx 35ma to 14 just by going to sleep @72mhz
2014-02-07T05:18:11 < dongs> aadamson: right. no need to turn off shit if you dont need it off.
2014-02-07T05:18:25 < aadamson> yup
2014-02-07T05:19:33 < dongs> cuz vfd
2014-02-07T05:19:58 < dongs> vote for deletion on wikipedia.
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2014-02-07T05:21:08 < beaky> hello
2014-02-07T05:22:48 < madist> R2COM: he's just slumming. trying to see how the other half lives.
2014-02-07T05:22:55 < englishman> vacuum fluorescent display
2014-02-07T05:23:10 < gnomad> VFDs are sexy!
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2014-02-07T05:23:26 < beaky> arent tft better than vfd
2014-02-07T05:24:17 < englishman> maybe he wants to add blinky leds to his solid gold rolls royce
2014-02-07T05:24:29 < beaky> lol
2014-02-07T05:25:07 < beaky> is it a good idea to use the PGAs of the stm32f3 to measure current
2014-02-07T05:25:25 < beaky> or should i get one of these guys: http://www.allegromicro.com/en/Products/Current-Sensor-ICs/Zero-To-Fifty-Amp-Integrated-Conductor-Sensor-ICs/ACS711.aspx
2014-02-07T05:26:37 < madist> considering the price of a rolls royce I would be very upset if they didn't come with blinky leds standard.
2014-02-07T05:27:28 < madist> blinking blue leds too. none of those cheap red leds.
2014-02-07T05:27:42 < beaky> i prefer orange and green leds
2014-02-07T05:28:42 < madist> I have an idea for a new type of fashion. blinking LEDs that you wear in your butthole.
2014-02-07T05:29:35 < beaky> doesnt adafruit have something like that
2014-02-07T05:29:56 < madist> they'd have to be very bright though. powerful enough to shine through a pair of jeans.
2014-02-07T05:33:47 < beaky> why is stm32 so popular
2014-02-07T05:34:24 < madist> mostly its due to stm32 being endorsed by Britney Spears
2014-02-07T05:34:30 < beaky> what about the other arm offerings from phillips semiconductor, luminary semiconductor, etc.
2014-02-07T05:34:40 < beaky> atmel also
2014-02-07T05:35:06 < madist> philips ARM is promoted by Rosie O'Donnell.
2014-02-07T05:35:13 < madist> so nobody uses it.
2014-02-07T05:35:14 < beaky> whos rosie o donel
2014-02-07T05:36:35 < beaky> ok so i have made a nice stm32 project. how do i go from stm32discovery to a pcb?
2014-02-07T05:37:15 < madist> heat it on the stove and scrape off all the parts
2014-02-07T05:41:26 < rigid> rosie o'donnell != roseanne barr
2014-02-07T05:41:50 < rigid> i'd use it if roseanne would promote it
2014-02-07T05:45:44 < beaky> what is the best gpio speed?
2014-02-07T05:46:48 < gxti> 8
2014-02-07T05:47:49 < englishman> 1
2014-02-07T05:48:51 < gnomad> beaky: There is *huge* competition among ARM vendors which has driven the prices down to near ridiculous levels
2014-02-07T05:49:20 < gnomad> beaky: ST provides some *very* affordable development hardware with their Discovery boards.
2014-02-07T05:56:49 < beaky> right the peripheral featureset is neat
2014-02-07T05:57:43 < beaky> is there a standard header file i can include that covers not only the stm32, but all arm microcontrollers?
2014-02-07T05:58:03 < beaky> i want to write a library
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2014-02-07T06:40:18 < dongs> zyp: noone has F072
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2014-02-07T07:21:37 < beaky> so...
2014-02-07T07:21:47 < beaky> what does a 32-bit timer do that a 16-bit or 8-bit dont
2014-02-07T07:21:57 < beaky> i want to use a 32-bit timers in my library
2014-02-07T07:22:23 < gnomad> these go to 32!
2014-02-07T07:22:57 < gnomad> er, 2^32.
2014-02-07T07:28:10 < englishman> that means its slower though
2014-02-07T07:28:17 < englishman> its much faster to use four 8bit timers
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2014-02-07T07:55:15 < emeb_mac> yay - got a bare gcc demo project for F0 Discovery
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2014-02-07T10:10:41 < fbs> like?
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2014-02-07T10:13:01 < dongs> > gcc
2014-02-07T10:13:25 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has quit [Ping timeout: 248 seconds]
2014-02-07T10:13:37 < fbs> yes gcc is cool
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2014-02-07T11:17:03 < edmont> it looks like there is no 64-pin package with 21 adc channels...
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2014-02-07T11:35:36 < karlp> edmont: wanting that many external channels is going to be difficult, if that's a hrd limit, you're going to have to shop around all the chip vendors,
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2014-02-07T11:43:58 < edmont> karlp: well, STM32L152VB is suitable, the only problem, is too big and i don't need so many pins
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2014-02-07T11:56:09 < karlp> zyp: I saw that xhci registers a usb2 and usb3 root hub on my comptuer at home, but plugging things into those two ports didnt' put devices under those two buses (surprisingly)
2014-02-07T11:56:24 < karlp> but the device works on all ports I tried on the home computer
2014-02-07T11:58:45 < karlp> hah, ok, found it works on some ports at work, but not other ports
2014-02-07T12:05:07 < karlp> and yeah, the BOS descriptor problem is on both computers
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2014-02-07T12:11:18 < zyp> can I see a lsusb -v from it?
2014-02-07T12:18:52 < zyp> dongs, ok, paid stuff
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2014-02-07T12:28:52 < dongs> ok. im going to get on thier case tomorrow first thing
2014-02-07T12:28:57 < dongs> cuz they're also doing my rc cables that im out of
2014-02-07T12:31:33 < dongs> http://www.wired.com/wiredenterprise/2014/02/watch-working-iphones/
2014-02-07T12:31:34 < dongs> haha wat
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2014-02-07T12:43:06 < madis_> when the iphone first came out there were videos of people who stood in line for a day just to buy an iphone and smash it outside the store
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2014-02-07T12:56:59 < dongs> old
2014-02-07T12:57:03 < dongs> they do that each time new itrash comes out
2014-02-07T12:58:40 < karlp> zyp: http://fpaste.org/75221/77064413/
2014-02-07T12:58:51 < karlp> lsusb is the same on both ports, just the bus/device numbers change
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2014-02-07T13:07:32 < trepidaciousMBR> jpa-: Ah cool thanks, sorry for 17 hour delay on replying ;) I'll double check all the pins, it does seem a lot like a byte lane output problem
2014-02-07T13:07:46 < trepidaciousMBR> I can do everything except write bytes correctly...
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2014-02-07T13:12:16 < zyp> karlp, ok, found your problem :)
2014-02-07T13:12:24 < zyp> bcdUSB              20.00
2014-02-07T13:12:37 < zyp> you've made an usb20 device, not usb2
2014-02-07T13:12:49 < zyp> that's why it's asking for BOS descriptors
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2014-02-07T13:13:42 < karlp> hrm, could have sword I'd copied that from somewhere,
2014-02-07T13:14:00 < zyp> that's why it's such a good idea copying code
2014-02-07T13:14:41 < zyp> also bcdDevice doesn't have anything to do with usb version
2014-02-07T13:14:42 < karlp> I thought copying gsmcmullin's code would have been ok, but I probably just copied it badly :)
2014-02-07T13:14:58 < zyp> bcdDevice is for kind of a «device version»
2014-02-07T13:17:44 < karlp> well, that fixes the BOS descriptor errors, but doesnt' do anything about the xhci errors
2014-02-07T13:18:00 < zyp> how does dmesg look now?
2014-02-07T13:18:16 < zyp> and how do the errors really manifest?
2014-02-07T13:19:35 < karlp> http://fpaste.org/75224/39177196/
2014-02-07T13:20:35 < karlp> "fails" means that the python-libusb code gets io errors: http://fpaste.org/75225/13917720/
2014-02-07T13:22:06 < karlp> I've got usb captures from wireshark, and they look "same" right up until the IN with the reply comes, and on the failing cast it's empty, presumably because of the xhci_hcd error in dmesg about too many fragments, I guess it dropped the reply
2014-02-07T13:23:24 < zyp> hmm, ok
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2014-02-07T13:24:52 < karlp> they're in https://github.com/karlp/discotmc/tree/master/usbcaps if you're super keen, but that's before I fixed the bcdVersion to be 0x0200 properly. (same net effect at the end of the day, just one less kernel warning)
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2014-02-07T13:27:30 < zyp> hmm, so the first bulk outs are fine, but the bulk in is failing?
2014-02-07T13:28:14 < karlp> yeah, and the device doesn't notice any failure,
2014-02-07T13:28:44 < karlp> I can keep making new python requests, and the device continues along happily, just that the python script dies with the libusb error
2014-02-07T13:28:53 < zyp> read_len+12 strikes me as a bit odd, since that probably means that it doesn't divide by MPS
2014-02-07T13:28:54 < karlp> and the device _thinks_ it has made the reply just fine.
2014-02-07T13:29:17 < karlp> what are you looking at now?
2014-02-07T13:29:31 < zyp> the failing function in the python traceback
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2014-02-07T13:30:55 < zyp> I don't think you're not allowed to do that, but the problem with reading for a packet smaller than MPS is that if you get a larger packet, it won't fit in the buffer and there's no other place to put it
2014-02-07T13:31:25 < karlp> hrm, my device side is only capable of ahndling < 64 byte replies at the moment anyway
2014-02-07T13:31:44 < zyp> just round it up to 64 then
2014-02-07T13:32:22 < karlp> what, make my reply always 64, no matter the size of actual data I have to return?
2014-02-07T13:32:47 < zyp> no, make the read size 64 instead of read_len+12
2014-02-07T13:33:15 < zyp> it's only a maximum
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2014-02-07T13:34:19 < zyp> I'm not convinced that's the problem, but it's the first thing I thought of
2014-02-07T13:34:39 < karlp> hrmm, that works for the first request, but it mangles future requests, probably because of some other assumption.
2014-02-07T13:34:42 < karlp> interesting.
2014-02-07T13:35:06 < karlp> still, is that then a "bug" in the ehci layer, allowing it, or a bug in the xhci code for requiring it?
2014-02-07T13:36:03 < zyp> I'm not sure, I don't have much experience with host stuff
2014-02-07T13:36:39 < zyp> I just know that once the host sends an IN token polling for data on the endpoint, it needs to be ready to receive up to MPS
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2014-02-07T13:37:09 < zyp> and if you actually want less, larger packets have to be dropped/trimmed at some point
2014-02-07T13:37:38 < zyp> hmm, I'll check if my usb coworker is in now, I could ask him
2014-02-07T13:38:09 < zyp> no, he's not
2014-02-07T13:38:43 < karlp> I kinda thought that libusb largely handled the packetizing of bulk in/out stuff for you, and you just did read(x) and got x, but you know what they say about assumptions :)
2014-02-07T13:40:13 < zyp> libusb operates with transfers, and transfer boundaries fall on packet boundaries
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2014-02-07T13:43:13 < zyp> http://libusb.sourceforge.net/api-1.0/packetoverflow.html
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2014-02-07T13:44:47 < karlp> but I don't think I'm getting libusb overflows, I think it's overflowing in the kernel.
2014-02-07T13:44:54 < zyp> so yeah, it seems to be a bug in the xhci layer
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2014-02-07T13:45:42 < zyp> anyway, it's easily solved by always rounding up to MPS sized packets
2014-02-07T13:46:27 < karlp> not reall,y I tried that and got errors elsewhere from something else then leaking though
2014-02-07T13:47:11 < zyp> that shouldn't happen, that's a problem elsewhere
2014-02-07T13:47:37 < karlp> well, it's requesting a read of 1048588 in both the good and bad usb ports
2014-02-07T13:47:46 < karlp> because that's some usbtmc max input length
2014-02-07T13:48:09 < zyp> oh
2014-02-07T13:49:09 < zyp> try 1048640 then
2014-02-07T13:49:55 < karlp> nope.
2014-02-07T13:50:22 < karlp> doesn't even work once then.
2014-02-07T13:50:51 < karlp> that repo I posted is for an f4 disco board btw if you really want to play :)
2014-02-07T13:51:28 < karlp> I think I might ask the python-usb mailing list, see if they have any ideas.
2014-02-07T13:51:48 < karlp> the "xHCI xhci_drop_endpoint called with disabled ep" kernel warnings are somewhat suspcicious as well.
2014-02-07T13:53:04 < zyp> http://comments.gmane.org/gmane.linux.usb.general/102084
2014-02-07T13:54:08 < zyp> looks like the problem is not that it needs to be divisible by MPS, just not too large
2014-02-07T13:54:30 < zyp> http://permalink.gmane.org/gmane.linux.usb.general/102216
2014-02-07T13:55:58 < zyp> you're asking for just over 1M, that's 65 fragments, so it fits the problem
2014-02-07T13:55:59 < karlp> man, your searchfu is good.
2014-02-07T13:56:21 < karlp> I was searching on some of these terms, andjust finding vague bug reports of people with usb 3 harddrives not working well
2014-02-07T13:56:57 < zyp> yeah, I saw them
2014-02-07T13:59:42 < karlp> reducing the max request size down to 512k then makes it work  happily
2014-02-07T13:59:50 < karlp> just get _different_ errors in the kernel now .)
2014-02-07T14:00:25 < karlp> http://fpaste.org/75232/77441813/
2014-02-07T14:01:41 < zyp> which kernel are you using?
2014-02-07T14:03:21 < zyp> people are talking about the xhci_drop_endpoint might have been fixed in 3.10.7
2014-02-07T14:03:49 < karlp> 3.12.8+fedora19
2014-02-07T14:03:58 < zyp> obviously not then
2014-02-07T14:04:04 < karlp> nope :)
2014-02-07T14:04:22 < zyp> anyway, are those prints signs of any trouble?
2014-02-07T14:04:41 < zyp> I wouldn't care if the application works
2014-02-07T14:04:48 < karlp> not really, turning the max read of this python-usbtmc lib down from 1meg to 512k is perfectly ok for me.
2014-02-07T14:05:00 < karlp> I'll propose that upstream t the library dude, should be reasonable,
2014-02-07T14:05:03 < zyp> you might want to clain the interface though ;)
2014-02-07T14:05:13 < karlp> yeah, I'm working on that now, that's an easy enough fix
2014-02-07T14:05:51 < karlp> still should really try and find a path for reporting the xhci problems :(
2014-02-07T14:06:50 < zyp> LKML?
2014-02-07T14:06:56 < karlp> I guess :)
2014-02-07T14:07:05 < karlp> never posted there myself before :)
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2014-02-07T15:35:41 < zyp> Laurenceb, I believe this is for you: http://www.ebay.com/itm/181318164374
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2014-02-07T16:31:50 < beaky> hello
2014-02-07T16:31:56 < beaky> whats the point of putting a RTOS on my mcirocontroler
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2014-02-07T16:43:30 -!- mode/##stm32 [+o dongs] by ChanServ
2014-02-07T16:43:49 <@dongs> http://pastie.org/8708901#6
2014-02-07T16:44:06 -!- mode/##stm32 [-o dfletcher_] by dongs
2014-02-07T16:44:09 -!- mode/##stm32 [-o dongs] by dongs
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2014-02-07T16:53:56 < englishman> lol
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2014-02-07T16:55:17 < Steffanx> Russia going totally mad yet Thorn?
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2014-02-07T16:57:20 < gnomad> beaky: http://bit.ly/1gaq8yK
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2014-02-07T17:01:20 < Thorn> Steffanx: sort of
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2014-02-07T17:06:26 < Steffanx> So i even received an email from broadcom, they really denied my request because the non-corporate email address
2014-02-07T17:07:01 < Steffanx> i wonder if they do accept a random @[mydomain] email address to get hte sdk
2014-02-07T17:07:27 < zyp> sdk for what?
2014-02-07T17:07:29 < zyp> wlan?
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2014-02-07T17:07:45 < Steffanx> Yes.
2014-02-07T17:08:08 < Steffanx> WICED(tm) they call it. Not sure if it's useful, but without the SDK i can't do much.
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2014-02-07T17:10:52 < Steffanx> Would be surprised if its a closed source lib..
2014-02-07T17:15:21 < madist> Broadcom are assholes.
2014-02-07T17:15:39 < beaky> whats wrong with broadcom?
2014-02-07T17:16:00 < madist> No datasheets.
2014-02-07T17:16:03 < madist> No code.
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2014-02-07T17:16:50 < beaky> yeah whats up with that why wont they supply full docs for their stuff
2014-02-07T17:17:02 < Steffanx> madist, they "they" all have this issue? Atheros doesn't release much either.
2014-02-07T17:17:20 < Steffanx> *don't they
2014-02-07T17:18:07 < gnomad> Is there somebody forcing you at gunpoint to use these products?
2014-02-07T17:18:43 < zyp> just a lack of alternatives
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2014-02-07T17:24:36 < gxti> standard operating procedure for most silicon vendors
2014-02-07T17:26:58 < karlp> atheros release a _lot_ more than they used to, and far far far more than broadcom do.
2014-02-07T17:28:42 < Steffanx> To companies under NDA karlp?
2014-02-07T17:28:58 < karlp> no, qualcomm has a bunch of opensource stuff,
2014-02-07T17:29:32 < karlp> it's why if youð're buying routers you want to run openwrt, the basic advice is "buy atheros if you can, then maybe ralink, and hope like hell you don't get broadcom"
2014-02-07T17:32:43 < Steffanx> That's because they provided the drivers i guess? A datasheet + register info could be useful when you want to implement something yourself
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2014-02-07T17:33:56 < karlp> sure :)
2014-02-07T17:34:58 < Steffanx> Not that i see myself implement a complete driver using SDIO, but .. that is something else :D
2014-02-07T17:43:23 < aadamson> zyp, thanks again for the back and forth on low power, I found a hitec document that helped put it in laymans terms and a few other examples... good stuff and exactly what I was looking for!
2014-02-07T17:43:58 < zyp> :)
2014-02-07T17:58:23 < karlp> sounds like a nice doc, got a link?
2014-02-07T18:04:05 < aadamson> http://www.hitex.com/fileadmin/pdf/insiders-guides/stm32/isg-stm32-v18d-scr.pdf
2014-02-07T18:05:10 < karlp> oh, that one :) I thought you had a particularly nice low power one
2014-02-07T18:05:50 < aadamson> nah, just the power section of that one helped get things straight in my head
2014-02-07T18:08:51 < karlp> jpa-: in your thesis, the device1/device2 examples for jitter in frame time vs refresh rate, what sort of things were those devices? and how did you measure that?
2014-02-07T18:09:18 < karlp> do you collect the timing by playing a video of alternate black/white frames or something?
2014-02-07T18:09:29 < karlp> (section 2.1.3)
2014-02-07T18:10:03 < zyp> there was some pictures of a video playing with a colored square in one of the corners
2014-02-07T18:10:16 < zyp> so I suppose each frame changes the color
2014-02-07T18:10:32 < karlp> ah, ok, 2.1.4 says that the thesis covers designing this .)
2014-02-07T18:10:44 < karlp> using your own results to justify capturing the results! :)
2014-02-07T18:10:54 < karlp> I should use more smiley right? :)
2014-02-07T18:11:02 < Steffanx> ;)
2014-02-07T18:11:10 < gxti> ;)
2014-02-07T18:11:25 < zyp> :D:D:D
2014-02-07T18:12:48 < karlp> oh no, you got the frame timings witht he existing product from OptoFidelity I guess?
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2014-02-07T19:07:43 < beaky> anyone know how to pass GPIO ports as template parameters?
2014-02-07T19:07:57 < jpa-> karlp: yeah, captured using the device itself indeed; 6-color sequence added to h.264 full-hd video
2014-02-07T19:08:13 < jpa-> karlp: the devices were tablet computers, cannot reveal brands
2014-02-07T19:08:14 < beaky> i can do gpio pins and clocks, but when i try gpio ports (as GPIO_TypeDef *) i get problems
2014-02-07T19:08:42 < karlp> jpa-: and those jitter results were really obviously different to humans?
2014-02-07T19:08:55 < jpa-> in some scenes yes
2014-02-07T19:09:07 < jpa-> especially panorating scenes per my experience
2014-02-07T19:09:36 < jpa-> we didn't do a proper abx study, though
2014-02-07T19:10:29 < jpa-> (is "panorating" the correct word? when the camera is slowly turning horizontally/vertically)
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2014-02-07T19:10:57 < jpa-> karlp: though that wasn't the crappiest results that i've seen
2014-02-07T19:13:14 < jpa-> karlp: this one was pretty funny  http://koti.kapsi.fi/jpa/stuff/pix/youtube.png
2014-02-07T19:13:30 < jpa-> not sure if some power/heat management in the device was lowering the cpu clock or something
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2014-02-07T19:50:00 < Miek> beaky: "problems"?
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2014-02-07T20:28:09 < fbs> beaky: individual pins are defined
2014-02-07T20:29:31 < fbs> beaky: what is it that youre trying to do
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2014-02-07T20:40:55 < beaky> http://ideone.com/LKJIVQ im trying to pass pins into a template
2014-02-07T20:41:07 < beaky> but when it comes to ports it seems i cant just pass the port base pointer
2014-02-07T20:42:09 < jpa-> erh
2014-02-07T20:42:20 < beaky> :(
2014-02-07T20:42:54 < jpa-> it'd be just as fast if you just stored pointers, and probably would use less code memory
2014-02-07T20:43:46 < jpa-> though if you want to make it pretty, make a class for pins so you can pass a GPIOB4 object for example, instead of those ugly as hell two separate uint32_t's
2014-02-07T20:44:08 < jpa-> something like   http://cgit.jvnv.net/laks/tree/gpio/gpio.h
2014-02-07T20:44:52 < beaky> yes a class for the gpio mappings would be the best way to go
2014-02-07T20:45:37 < beaky> so.. if theres port->BSRR and port->BRR to flip bits, whats the point of port->ODR?
2014-02-07T20:45:58 < jpa-> to set them if you know what to set them to..
2014-02-07T20:46:11 < zyp> or to read back what they are set to :)
2014-02-07T20:46:14 < jpa-> or that
2014-02-07T20:46:17 < beaky> ah
2014-02-07T20:48:31 < beaky> so if i want to set my portd to 1000101, then portd->ODR = ~(portd->ODR & 1000101) | 1000101 is better than the alternative of bsrr
2014-02-07T20:48:51 < jpa-> wtf?
2014-02-07T20:49:02 < zyp> beaky, no
2014-02-07T20:49:14 < jpa-> how about portd->ODR = 1000101?
2014-02-07T20:49:17 < zyp> you only want to use ODR when you want to set all 16 bits
2014-02-07T20:49:30 < gxti> i think my task for this weekend will be to steal jpa-'s code
2014-02-07T20:49:32 < beaky> oh
2014-02-07T20:49:39 < jpa-> gxti: what is my code?
2014-02-07T20:49:50 < gxti> or whoseever that is you just linked
2014-02-07T20:49:54 < jpa-> it's zyp's
2014-02-07T20:49:55 < zyp> that's my code ;)
2014-02-07T20:49:59 < beaky> that c++11 api for stm32 is awesome
2014-02-07T20:50:13 < jpa-> and yes, it is very beautiful, you definitely should steal it
2014-02-07T20:50:17 < beaky> i wish i pulled that  before i began writing this stupid itnerface
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2014-02-07T20:51:02 < gxti> is constexp cable of doing something like compiling a table of GPIO pin configs into MODER et al constants?
2014-02-07T20:51:09  * jpa- slapper beaky rund en liten med en stor laks
2014-02-07T20:51:21 < gxti> jpa-: rood
2014-02-07T20:51:39 < beaky> ?
2014-02-07T20:52:07 < jpa-> gxti: no point in making constants for them, cortex-m3 has indexed pointer access mode
2014-02-07T20:52:08 < zyp> gxti, depends how smart the compiler is about the optimization
2014-02-07T20:52:17 < jpa-> ldr r2, [r3, #4]  etc.
2014-02-07T20:52:37 < jpa-> so you only need the base pointer and everything else works pretty much as fast as a compiled constant would
2014-02-07T20:52:47 < zyp> jpa-, I think he's referring to stuff like the mask functions
2014-02-07T20:52:51 < gxti> not quite sure what you're getting at
2014-02-07T20:52:54 < jpa-> ah
2014-02-07T20:53:04 < jpa-> ok, yeah, i though the register addresses
2014-02-07T20:53:29 < beaky> so i shouldn't do this: port->((data & (1 << mybit)) ? BSRR : BRR) |= mybit;
2014-02-07T20:53:34 < beaky> and i should use the ODR instead
2014-02-07T20:53:36 < gxti> i want to setup MODER etc with as little code as possible, using a human-readable table of configuration for each pin
2014-02-07T20:54:07 < jpa-> if you set the modes with zyp's set_mode(), the compiler cannot really optimize it because they are volatiles
2014-02-07T20:54:09 < gxti> so the resulting compiled code should basically just be "GPIOA->MODER = 0x1234", but the source code should be friendly
2014-02-07T20:54:18 < jpa-> gxti: have you seen how chibios does it?
2014-02-07T20:54:32 < zyp> gxti, the constant folding/propagation of the optimizer should optimize out pretty much most of my code
2014-02-07T20:54:59 < zyp> jpa-, should still work nicely for PinArray::set_mode
2014-02-07T20:55:02 < gxti> it seems like conceptually at least constexpr should be able to do it, but i haven't tried it yet
2014-02-07T20:55:24 < jpa-> zyp: hmm yeah, that's true
2014-02-07T20:55:32 < jpa-> and saving a few bytes cannot be that critical
2014-02-07T20:55:34 < gxti> jpa-: i'm sure i did at some point because i stole it when i did my own, but what i have now is per-pin configuration at runtime (though more efficient than stdperiph's way)
2014-02-07T20:55:41 < Thorn> remember that inline functions can be optimized out too
2014-02-07T20:55:56 < zyp> jpa-, no, it's pointless to optimize the hell out of code that's only running during initialization
2014-02-07T20:56:15 < jpa-> per-pin config at runtime seems fine to me, it's often much cleaner to organize code that way anyway
2014-02-07T20:56:38 < gxti> like this is my board config now: https://github.com/mtharp/laureline-firmware/blob/master/src/board.c
2014-02-07T20:56:56 < zyp> the array-stuff is nice when you have parallel stuff hooked up
2014-02-07T20:57:22 < beaky> i love BSRR and BRR
2014-02-07T20:57:23 < gxti> but the implementation does pointless stuff at runtime to make use of it, plus there's the flash occupied by the table itself
2014-02-07T20:57:32 < zyp> really?
2014-02-07T20:57:34 < gxti> when really the whole thing could be condensed down to just the final GPIO config ints
2014-02-07T20:58:06 < zyp> I would expect the compiler to be able to optimize out that table, since it's a static const
2014-02-07T20:58:19 < jpa-> i wouldn't expect a compiler to do that
2014-02-07T20:58:40 < gxti> the function that uses it isn't const, it's executed at runtime. but maybe a constexpr one could be compiled down.
2014-02-07T20:58:46 < zyp> ah, no
2014-02-07T20:58:47 < gxti> https://github.com/mtharp/laureline-firmware/blob/master/src/init.c#L147
2014-02-07T20:59:14 < zyp> of course it doesn't happen if setup_bank can't be inlined
2014-02-07T20:59:14 < gxti> all it does is calculate CRL and CRH and stuff it into the gpio. it doesn't need the whole table, it just needs the final values
2014-02-07T20:59:29 < jpa-> gxti: how about some xmacro magic to generate the MODER etc. values?
2014-02-07T20:59:56 < zyp> gxti, try moving the setup_bank definition to the header and make it an inline function
2014-02-07T21:00:51 < zyp> tricks like mine only works with inline functions, because you need to inline it for the optimizer to know what arguments it's being called with at compile time
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2014-02-07T21:03:00 < zyp> constexpr has a slightly different semantic meaning, it means that «the result of this function can be calculated at compile time if the arguments are known at compile time»
2014-02-07T21:03:36 < zyp> which means that «this function can be used in an expression where you need a result at compile time»
2014-02-07T21:04:14 < zyp> like declaring a global array with the size given by a function, for instance
2014-02-07T21:04:36 < Steffanx> Does it also have some fancy way to tell you if it did not happen?
2014-02-07T21:05:07 < Steffanx> or do you have to look at the output to see if it's calculated at compile time?
2014-02-07T21:06:24 < zyp> well, if a compile time constant is required, and the arguments doesn't satisfy that, it won't compile
2014-02-07T21:06:47 < gxti> it doesn't seem to want to inline
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2014-02-07T21:08:21 < zyp> try the always_inline attribute just for fun
2014-02-07T21:09:23 < gxti> it didn't "reduce", i'm not terribly surprised
2014-02-07T21:09:52 < gxti> maybe if i rewrite it to return the values instead of writing into the GPIO directly?
2014-02-07T21:09:57 < gxti> which is what the constexpr would have to do anyway
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2014-02-07T21:12:19 < zyp> I hope you're building this with optimizations :)
2014-02-07T21:14:53 < gxti> even breaking it out into a separate function that just returns values doesn't work. guess i really need constexpr (or at least c++) to make this work.
2014-02-07T21:15:11 < zyp> probably wouldn't change anything
2014-02-07T21:15:40 < gxti> well it prevents the compiler from trying to do anything but compile-time processing, instead of giving up without saying anything
2014-02-07T21:16:20 < zyp> no, it doesn't
2014-02-07T21:17:09 < zyp> you can still feed a constexpr function with arguments that aren't known until runtime, you just can't use the result of that for anything that requires a compile time value
2014-02-07T21:17:50 < gxti> sounds good to me. if i only use it as a const initializer then it would error if it were not compileable, yes?
2014-02-07T21:18:21 < beaky> I love the SysTick
2014-02-07T21:19:04 < Steffanx> What question do you have about the SysTick beaky?
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2014-02-07T21:27:44 < beaky> none :D its just awesome
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2014-02-07T21:41:37 < gxti> on the flip side to all that, i don't mind not having the smallest possible initialization if it means more consistent code, e.g. declaring a particular instance of a pin for each function and using that to configure it, instead of having a table for the configuration and then separately having to declare the function with the possibility of a mismatch
2014-02-07T21:42:17 < gxti> it's just tempting to chase after it just because i know it's possible
2014-02-07T21:48:21 < Rickta59> i done some work in this area with the msp430 gxti .. i got it to generate really small code
2014-02-07T21:49:07 < Rickta59> https://github.com/RickKimball/fabooh/blob/master/include/msp430/core/gpio.h
2014-02-07T21:49:33 < Rickta59> https://github.com/RickKimball/fabooh/blob/master/board/msp430g2553in20/pins.h
2014-02-07T21:50:02 < Rickta59> i have some initial start with nxp arm stuff too
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2014-02-07T21:50:34 < Rickta59> although it needs a lot of work to reach the level of optimization i was able to achieve with msp430-gcc
2014-02-07T21:51:17 < gxti> maybe i'll stick to generating code with python. it's not as, uh, elegant? but it can do a lot more, both in terms of generating code as well as error checking.
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2014-02-07T21:52:46 < jpa-> gxti: i still recommend looking into x macros.. you might get pretty nice gpio initialization that way
2014-02-07T21:53:22 < gxti> it's possible, and it's also possible that i might be able to do lots of really fancy stuff, but it would be ugly as shit because it's in preprocessor
2014-02-07T21:54:03 < jpa-> why is preprocessor ugly?
2014-02-07T21:54:11 < jpa-> it's part of C, you'll get nowhere without it
2014-02-07T21:54:34 < Rickta59> it is more work to do specializations with macros
2014-02-07T21:54:36 < gxti> i'm quite familiar with it
2014-02-07T21:55:21 < gxti> but doing anything complicated with it is pointless when i can choose better tools
2014-02-07T21:55:45 < jpa-> i'm not sure that a separate code-generating python script is necessarily a better tool
2014-02-07T21:55:48 < gxti> if the only thing i did was the gpio table building it might be ok, but i'd like to do more
2014-02-07T21:55:57 < jpa-> c++ template hell may or may not be a better tool
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2014-02-08T02:03:06 < Thorn> do ferrite chokes on usb cables influence bit error rate in any way?
2014-02-08T02:05:13 < zyp> isn't it rather to reduce EMI?
2014-02-08T02:08:35 < Laurenceb_> common mode interference removal
2014-02-08T02:09:03 < zyp> yes, which could otherwise be radiated as EMI
2014-02-08T02:10:39 < Thorn> so it can make Vbus/ground cleaner for a usb-powered device?
2014-02-08T02:11:47 < zyp> I'd guess it won't matter much
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2014-02-08T02:54:20 < dongs> what hte hell
2014-02-08T02:54:24 < dongs> why isnt ftdi auto installing drivers
2014-02-08T02:54:28 < dongs> i thought they were on windowsupdate
2014-02-08T02:55:44 < gxti> not that i'm aware, but i've been quite unaware before.
2014-02-08T02:56:10 < gxti> somethingsomethinglunux
2014-02-08T02:59:01 < Thorn> windows update offers to install new versions of ftdi drivers sometimes
2014-02-08T02:59:07 < Thorn> (win 7)
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2014-02-08T10:44:01 < baird> I expect this'll stand out from all the bogans trying to sell stolen iPhones on gumtree... http://www.gumtree.com.au/s-ad/glendale/other-electronics-computers/freescale-freedom-cortex-m-development-boards/1038359378
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2014-02-08T11:33:20 < dongs> baird: haha nice blog
2014-02-08T11:59:29 < dongs> zyp, everything in progress. another bag of connectors arrived. do you want fast connectors soldered, or just crimped?
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2014-02-08T12:18:36 < dongs> baird: lol, i pasted the ad in a stoner channel and some faggot left a reply using my email address :(
2014-02-08T12:21:50 < PaulFertser> baird: actually OpenOCD has support for those chips now, provided you use stlink to externally swd-debug them. Or full jtag (if any of those support it).
2014-02-08T12:22:01 < dongs> PaulFertser: also apparently you can flash jlink firmware on them
2014-02-08T12:22:31 < PaulFertser> dongs: not sure about jlink but probably some "mbed" firmware.
2014-02-08T12:23:09 < PaulFertser> But that's for sure, one can use stlink to flash and debug kl25z and k20, not sure about kl05z
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2014-02-08T12:25:16 < dongs> http://www.segger.com/opensda.html
2014-02-08T12:25:18 < dongs> ^ this
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2014-02-08T12:25:31 < PaulFertser> Only mass-erasing a "locked" kl25z is not supported, but one can recover using either mbed or that sda, yes.
2014-02-08T12:25:46 < baird> mbed firmware for the KL25, at least. But 'the cloud programming'? go to hell.
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2014-02-08T12:25:57 < dongs> mbed has sores now
2014-02-08T12:26:00 < dongs> only works with armcc afaik
2014-02-08T12:26:05 < dongs> (the real compiler)
2014-02-08T12:30:31 < baird> "free to use GDBServer..." And that's better than the Tivo-ized GDB server from Penismicro, how?
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2014-02-08T12:38:14 < ntfreak_> baird: install CMSIS-DAP onto the boards and use OpenOCD to program/debug.
2014-02-08T12:39:54 < ntfreak_> CMSIS-DAP installed via mbed firmware
2014-02-08T12:42:14 < PaulFertser> Ah, right, newer mbed versions support CMSIS-DAP
2014-02-08T12:42:27 < baird> I'll just magically pull a Windows system out of my arse and do that, then.
2014-02-08T12:42:39 < PaulFertser> ntfreak_: what about custom DAP-level (?) SWD commands to mass-erase, is that possible with cmsis-dap?
2014-02-08T12:43:04 < baird> (all these boards are a Rev with the original firmware, pre-November.)
2014-02-08T12:44:02 < PaulFertser> I remember reading kl25z datasheet regarding mass-erase and it was obvious an HLA can't do that.
2014-02-08T12:44:53 < ntfreak_> PaulFertser: yes I think so as the CMSIS-DAP operates at a lower level than stlink.
2014-02-08T12:47:50 < ntfreak_> PaulFertser: just had a quick look at the code and looks like it should work fine - mass erase that is
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2014-02-08T12:51:46 < ntfreak_> baird: did not need windows to update mine, put them in bootloader mode and dropped the mbed image on them.
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2014-02-08T12:53:01 < baird> ntfreak_: when did you get your KL?
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2014-02-08T12:58:55 < ntfreak_> baird: bit unsure maybe 6 months ago, freescale sent me few boards.
2014-02-08T13:01:28 < baird> Mine would be about 7-8, at least.
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2014-02-08T13:22:43 < dongs> baird: at least jlink one works on lunix? i dunno
2014-02-08T13:24:08 < baird> x86 linux
2014-02-08T13:24:14 < dongs> no clue
2014-02-08T13:24:18 < dongs> i dont use lunix,
2014-02-08T13:24:44 < baird> Looking at it now, intel & binary only.
2014-02-08T13:26:06 < baird> Which was the whole reason for dumping the boards anyway. Seegers blobs, Pemicro blobs, both useless to me.
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2014-02-08T14:24:37 < Robint91> hi all
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2014-02-08T14:53:19 < zyp> dongs, crimped or soldered doesn't matter as long as they won't fall off afterwards
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2014-02-08T17:08:56 < beaky> hello
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2014-02-08T17:09:12 < beaky> theres one thing that bothers me about the stm32discovery boards...
2014-02-08T17:09:23 < beaky> why does it supply 3V rather than 3.3V? O.o
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2014-02-08T17:41:25  * kuldeepdhaka finished soldering his tssop20 stm32f030
2014-02-08T17:43:07 < Robint91> kuldeepdhaka, you have chips?
2014-02-08T17:43:17 < kuldeepdhaka> hum
2014-02-08T17:43:25 < kuldeepdhaka> 5 :)
2014-02-08T17:44:05 < kuldeepdhaka> pretty easy on breakout board. (thats what i expected)
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2014-02-08T18:07:06 < beaky> kuldeepdhaka: wow how did you solder it
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2014-02-08T18:38:46 < kuldeepdhaka> beaky, i have a solder station.
2014-02-08T18:40:08 < Thorn> wow so much skill such fine pitch
2014-02-08T18:40:30 < kuldeepdhaka> afaif manually will also be easy
2014-02-08T18:41:35 < kuldeepdhaka> its .65 only
2014-02-08T18:43:15 < jpa-> yeah, tssop is trivial
2014-02-08T18:44:33 < beaky> im so scared to solder
2014-02-08T18:44:58 < kuldeepdhaka> jpa-, still better than 8bit where a custom i2c slave is require (or for any other interface)
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2014-02-08T19:35:21 < Thorn> http://www.mdif.org/outernet-providing-information-to-the-world-from-outer-space/ https://www.outernet.is/
2014-02-08T19:35:52 < Thorn> wi-fi from orbit? wtf
2014-02-08T19:36:35 < Thorn> is ionosphere transparent at 2.4GHz?
2014-02-08T19:37:05 < PaulFertser> How else you would get GPS signals?
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2014-02-08T19:42:44 < PaulFertser> GPS is 1.5GHz though
2014-02-08T19:44:03 < Thorn> and bitrate is much slower iirc
2014-02-08T19:46:25 < PaulFertser> True
2014-02-08T19:46:43 < BrainDamage> past 300-400MHz it doesn't reflect much
2014-02-08T19:49:13 < BrainDamage> what's more concerning is that the tcp stack requires bidirectional communication
2014-02-08T19:49:20 < BrainDamage> so you'll need to be able to upload
2014-02-08T19:50:06 < jpa-> maybe they won't be using tcp/ip
2014-02-08T19:50:18 < jpa-> but instead some custom app running on the device and just sniffing wlan packets
2014-02-08T19:50:44 < BrainDamage> then it won't be exactly wifi, wouldn't it?
2014-02-08T19:50:48 < jpa-> looks like udp according to the site
2014-02-08T19:50:52 < BrainDamage> it'd just be reusing commodity wifi hw
2014-02-08T19:51:09 < jpa-> yeah, pretty useless because what content is there really that would be read by so many people?
2014-02-08T19:51:27 < jpa-> some news site, but that's about it
2014-02-08T19:51:48 < Robint91> meh
2014-02-08T19:52:00 < Robint91> the noise floor is just too high to be usefull
2014-02-08T19:52:10 < Robint91> it would not work
2014-02-08T19:52:19 < Robint91> without having a DISH at the RX
2014-02-08T19:52:29 < BrainDamage> dish is pretty much required
2014-02-08T19:52:36 < jpa-> in orbit there is no FCC limiting your transmit power ;)
2014-02-08T19:52:45 < BrainDamage> even just polar orbit sats, they are 200
2014-02-08T19:52:50 < BrainDamage> 200+ km distance
2014-02-08T19:53:25 < BrainDamage> assume a beam aperture of few ° and you still get stupidly weak power density at the rx
2014-02-08T19:53:41 < BrainDamage> which means you'll need a dish
2014-02-08T19:55:34 < Thorn> how much power can you pack into a cubesat anyway
2014-02-08T19:55:48 < Robint91> 2-3W total DC power
2014-02-08T19:55:50 < Thorn> unless its operational life is going to be 4 hours
2014-02-08T19:56:09 < beaky> how do you measure high dc voltage and dc current and ac frequency with stm32?
2014-02-08T19:56:27 < jpa-> might as well put all that content on some cheap usb sticks and drop them from airplane - probably cheaper and more functional
2014-02-08T19:56:29 < Robint91> beaky, and ADC and a frontend
2014-02-08T19:56:49 < beaky> can we impement the AFE on the stm32f3 itself
2014-02-08T19:58:27 < jpa-> no
2014-02-08T19:58:59 < jpa-> you can compensate for crappy/cheap frontend with some signal processing, but you are going to need something to feed to the ADC..
2014-02-08T20:00:26 < beaky> voltage is a simple resistor divider
2014-02-08T20:00:29 < beaky> but current?
2014-02-08T20:00:39 < beaky> and frequency is something completely different
2014-02-08T20:00:40 < jpa-> shunt resistor and preamp
2014-02-08T20:00:40 < Robint91> beaky current sense
2014-02-08T20:00:41 < Thorn> beaky: google current sense amplifier
2014-02-08T20:00:44 < beaky> oh
2014-02-08T20:00:59 < Robint91> beaky, frequency is just voltage with a bit of DSP
2014-02-08T20:01:04 < beaky> wow theres lots of CSAs out there... high-side, high common-mode input, precision, low-noise...
2014-02-08T20:01:18 < beaky> and how do i pick the shunt resistor itself
2014-02-08T20:01:27 < jpa-> and frequency depends on frequency range - for higher frequencies a prescaler (frequency divider) should be enough
2014-02-08T20:01:43 < beaky> maybe the timers in input mode might count fequneyc?
2014-02-08T20:02:02 < Robint91> beaky, what is the maximum frequency that you want to know?
2014-02-08T20:02:20 < beaky> um... 0 - 1kHz
2014-02-08T20:02:35 < beaky> like in the sound range
2014-02-08T20:03:07 < jpa-> trivial
2014-02-08T20:04:03 < jpa-> if it's digital levels, hook it to timer; if it is analog signal, hook to ADC and do FFT (or just highpass + count zero crossings)
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2014-02-08T20:05:11 < beaky> how do i select the current-shunt resistor? the ones i find are huge aren't there small SMD ones that fit on pcb
2014-02-08T20:06:24 < Thorn> http://www.yageo.com/NewPortal/_en/product/product-1-04.jsp
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2014-02-08T20:07:44 < beaky> wow those are awesome
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2014-02-08T20:17:15 < karlp> you can also use current transformers or hall effect sensors if you don't want to actually modify the wiring.
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2014-02-08T20:43:35 < beaky> riht i could try somerhing like ACS711
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2014-02-08T20:44:27 < beaky> but dynamic range may be an isue?
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2014-02-08T20:46:54 < trepidaciousMBR> beaky: Remove the pointless diode and you get 3.3V
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2014-02-08T20:48:08 < beaky> at 0A is is like 1.15V
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2014-02-08T20:50:31 < beaky> so each miliamp is like 8mV
2014-02-08T20:50:47 < beaky> good enough!
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2014-02-08T20:51:05 < beaky> right im giving the acs711 a serious go
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--- Day changed Sun Feb 09 2014
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2014-02-09T02:40:14 < gxti> more foxconning... up to 9 ntp servers now. still 3 left to make tomorrow.
2014-02-09T02:40:48 < gxti> need to rig a vacuum pickup tool
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2014-02-09T03:30:20 < qyx_> gxti_: do you already have someone to buy them?
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2014-02-09T03:31:36 < gxti_> quite a few have expressed interest. if some people here want to buy the bare PCBs without enclosure i can do that.
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2014-02-09T03:31:52 < gxti> the mainholdup is that i am too lazy to find someone to machine the faceplates for the enclosure.
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2014-02-09T03:34:55 < zyp> what was the purpose of the ntp stuff?
2014-02-09T03:35:36 < gxti> to be a ntp server
2014-02-09T03:36:04 < gxti> gps goes in, ntp comes out, never a miscommunication. you can't explain that.
2014-02-09T03:36:12 < zyp> ah, right, gps
2014-02-09T03:39:05 < zyp> http://paste.jvnv.net/view/n3umK <- I made some sort of reusable code for making a configuration gui that will unpack/pack data to a struct
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2014-02-09T04:41:40 < dongs> sup stoners
2014-02-09T04:42:04 < zyp> pythoning it up
2014-02-09T04:42:09 < dongs> not surprised
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2014-02-09T04:59:28 < Thorn> gxti: who are your customers? just someone who wants a ntp server for their company network or some more interesting use involved?
2014-02-09T05:02:24 < dongs> NSA
2014-02-09T05:02:35 < zyp> someone who want an accurate time base and don't have internet connectivity usable for traditional tnp
2014-02-09T05:02:42 < zyp> ntp*
2014-02-09T05:03:39 < Thorn> like some kind of remote installations?
2014-02-09T05:04:33 < zyp> well, I dunno, I'm just drawing from the obvious facts
2014-02-09T05:05:11 < zyp> I'm also kinda wondering
2014-02-09T05:05:52 < Thorn> maybe they want a low stratum (if that's the correct term) server or something
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2014-02-09T05:06:08 < dongs> strata
2014-02-09T05:06:40 < zyp> I'm not sure if gps->ntp would be more accurate than syncing with an online server
2014-02-09T05:06:48 < dongs> heh
2014-02-09T05:06:58 < zyp> I'd guess it's not
2014-02-09T05:07:15 < zyp> otherwise that would be another purpose to use it
2014-02-09T05:09:48 < qyx_> why wouldn't it be?
2014-02-09T05:10:33 < zyp> why would it be?
2014-02-09T05:12:55 < BrainDamage> the quality of the sync is reliant on the packet latency spreading
2014-02-09T05:13:00 < qyx_> lower stratum, lower network jitter
2014-02-09T05:13:03 < BrainDamage> the less, the better sync
2014-02-09T05:13:19 < BrainDamage> and local servers tend to, and can have less jitter
2014-02-09T05:13:47 < zyp> depending on how accurate the source for the local server is
2014-02-09T05:13:53 < qyx_> also more deterministic and realtime environment
2014-02-09T05:15:07 < zyp> NTP is designed to filter out network jitter, so syncing from an online server with a good source may still be better than syncing from a local server with a worse source
2014-02-09T05:15:18 < BrainDamage> if you compute the resolution required for a 10m ellipse that's on the order of 10^-8s
2014-02-09T05:15:35 < BrainDamage> and that's easily obtainable with off the shelf gps modules
2014-02-09T05:35:00 < gxti> Thorn: sure remote installations, but also just to have a traceable source
2014-02-09T05:35:11 < gxti> all those internet time servers have to get it from somewhere
2014-02-09T05:35:50 < zyp> I also need to get time from somewhere, I have too little of it
2014-02-09T05:39:10 < gxti> internet ntp sync is usually on the order of 1ms jitter, and the offset spread among different servers is always 10ms or more
2014-02-09T05:39:22 < gxti> commodity gps receivers can do better than 100ns
2014-02-09T05:39:31 < gxti> it's not even close
2014-02-09T05:39:49 < BrainDamage> altough there's one thing
2014-02-09T05:40:18 < BrainDamage> the local oscillator jitter will be in the order of us
2014-02-09T05:40:31 < gxti> and all those servers are getting time from somewhere, and often it's GPS, and if it's not it's something with far worse jitter like a telephone link
2014-02-09T05:40:49 < gxti> well not jitter, but uncontrolled offset
2014-02-09T05:40:49 < BrainDamage> so even if you sync your local clock with a much better source, it simply won't keep it for long
2014-02-09T05:43:48 < qyx_> i wonder how much distortion on power line would 1W flyback cause
2014-02-09T05:43:59 < qyx_> without active pfc
2014-02-09T05:44:36 < gxti> active pfc for 1W? lol
2014-02-09T05:44:47 < qyx_> i am about to do a kind of power surge logger
2014-02-09T05:44:56 < qyx_> with thd and pfc measurement
2014-02-09T05:44:59 < gxti> usually at that scale you don't even get more than one diode
2014-02-09T05:45:09 < gxti> ah
2014-02-09T05:45:37 < qyx_> so i will not be happy if the measurement will be distorted by the device itself
2014-02-09T05:46:04 < gxti> i did something similar before using a non-isolated switcher but unfortunately it failed miserably so i can't tell you
2014-02-09T05:47:00 < BrainDamage> add a resonant filter?
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2014-02-09T05:51:31 < qyx_> maybe
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2014-02-09T05:58:34 < qyx_> http://en.wikipedia.org/wiki/File:Solec_Kujawski_longwave_antenna_feeder.jpg
2014-02-09T05:58:35 < qyx_> lol
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2014-02-09T06:14:17 < dongs> wooh thats pretty hardcore shit
2014-02-09T06:14:51 < emeb_mac> giant coax w/ air dielectric
2014-02-09T06:15:06 < englishman> feedlinez yo
2014-02-09T06:15:16 < dongs> http://www.bitboost.com/pawsense/
2014-02-09T06:15:40 < emeb_mac> catlike typing detected
2014-02-09T06:15:52 < zyp> dongs, how come you haven't seen that ages ago?
2014-02-09T06:15:58 < emeb_mac> that's been around since Win3.1
2014-02-09T06:15:59 < dongs> yeah that is NEW2ME
2014-02-09T06:16:07 < englishman> i think i remember that
2014-02-09T06:16:17 < englishman> youd think japan would be all over that
2014-02-09T06:16:34 < zyp> dongs, I thought you were on top of everything happening on the internets
2014-02-09T06:16:47 < emeb_mac> that's from before the internets. ergo...
2014-02-09T06:18:26 < dongs> haha that shit is from 1999
2014-02-09T06:18:56 < BrainDamage> I remember ignobel making fun of it like 10 years ago
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2014-02-09T06:20:30 < zyp> emeb_mac, how much should I care about which pins I use for what on a fpga?
2014-02-09T06:20:45 < Thorn> aren't you supposed to use stereo cameras and computer vision for that these days
2014-02-09T06:20:49 < dongs> http://www.bbc.co.uk/news/magazine-26067154 that headline
2014-02-09T06:20:51 < emeb_mac> zyp: depends on what FPGA you are using
2014-02-09T06:21:08 < emeb_mac> on the Spartan 3 parts there are some pins that are input only.
2014-02-09T06:21:13 < zyp> I'm thinking about spartan-3a like you suggested, this is for the slave interface I've been talking about
2014-02-09T06:21:27 < zyp> input only is fair enough, I'm thinking of stuff like clock nets
2014-02-09T06:21:32 < emeb_mac> on most FPGAs there are some pins that are dedicated clock inputs.
2014-02-09T06:22:04 < emeb_mac> so if you have clock signals in your I/O, make sure to hook them to the global clock IO pins.
2014-02-09T06:22:05 < zyp> yes, and when do I want to use them?
2014-02-09T06:22:13 < Thorn> on cyclones there's a limit on the number of outputs per io bank or somethnig
2014-02-09T06:22:30 < zyp> the slave bus I want to interface with has separate read and write strobes
2014-02-09T06:22:38 < zyp> no common clock
2014-02-09T06:23:02 < emeb_mac> zyp: in that case it probably doesn't matter
2014-02-09T06:23:27 < zyp> at what speed does it start mattering?
2014-02-09T06:23:29 < dongs> you can use global clock shit for stuff that you expect to be accessible quickly from anywhere in fpga or someshit
2014-02-09T06:23:42 < emeb_mac> that too
2014-02-09T06:24:39 < emeb_mac> zyp: I wouldn't worry too much for stuff that's slower than 20MHz or so.
2014-02-09T06:24:57 < zyp> it'll be faster
2014-02-09T06:25:00 < emeb_mac> prop delays on the non-clock inputs aren't much worse at that point.
2014-02-09T06:25:45 < emeb_mac> depends on how much logic those strobes might be routed to
2014-02-09T06:26:16 < zyp> well, I guess since I'll mainly be using them to read/write from FIFOs it doesn't really matter much
2014-02-09T06:26:20 < emeb_mac> also, I assume you'd be synchronizing to some other clock?
2014-02-09T06:26:43 < emeb_mac> yeah - if they're not used in many places then it won't matter.
2014-02-09T06:26:49 < zyp> I guess
2014-02-09T06:26:57 < emeb_mac> or rather - bringing them in on clock networks won't really help
2014-02-09T06:27:26 < zyp> what I want to do is an ATA/ATAPI slave, ideally supporting up to ATA/66
2014-02-09T06:27:46 < dongs> haha
2014-02-09T06:27:50 < dongs> 1996 called
2014-02-09T06:28:33 < zyp> yep
2014-02-09T06:32:25 < emeb_mac> shouldn't be a big deal
2014-02-09T06:32:54 < emeb_mac> I've done some fairly sloppy coding that ran well up to 50MHz. Can probably go faster than that without too much effort.
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2014-02-09T09:34:23 < Robint91> attn dongs https://twitter.com/dongatory/status/432233975797383168
2014-02-09T09:34:32 < Robint91> you flappy bird?
2014-02-09T09:37:37 < englishman> why do i hear that name so often now
2014-02-09T09:40:27 < englishman> oh i see
2014-02-09T09:40:33 < englishman> 50 grand a day for a few hours work, not bad
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2014-02-09T13:07:14 < Cyric> hey guys can someone help me a second please... its 4 days that i am stucked in a stupid things... basically i am migrating from F version to L version... i am using standard ST Libraries... i want JUST PRINT out some characters on the USART interface...
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2014-02-09T13:08:10 < Cyric> i tried all the possible initializations, i read many examples and they have all the instructions that i have but my code is still dont work
2014-02-09T13:08:39 < jpa-> subdivide the problem until you find where it is
2014-02-09T13:08:45 < Cyric> it get stuck in the "while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);"
2014-02-09T13:08:57 < Cyric> this is very basic
2014-02-09T13:09:04 < Cyric> is like blinking led
2014-02-09T13:09:15 < jpa-> check usart registers in debugger? maybe you forgot to enable clock?
2014-02-09T13:09:22 < jpa-> also turn on the stdperiph lib asserts
2014-02-09T13:09:28 < jpa-> they can catch some stupid mistakes
2014-02-09T13:10:01 < Cyric> that is one thing,, in the F version i was able to enable the port A clock, USART1 clock and the AFIO clock
2014-02-09T13:10:17 < Cyric> in the L version there is not such instruction for the AFIO register anymore
2014-02-09T13:11:30 < jpa-> what F version was it?
2014-02-09T13:11:34 < jpa-> F1?
2014-02-09T13:11:43 < Cyric> is the discovery
2014-02-09T13:11:51 < Cyric> L1xx now
2014-02-09T13:11:52 < jpa-> there are F1, F3 and F4 discovery boards
2014-02-09T13:11:59 < Cyric> before was the F1
2014-02-09T13:12:00 < jpa-> F1 is the only one with "old-style" gpio
2014-02-09T13:12:03 < jpa-> ok
2014-02-09T13:12:18 < jpa-> the alternate functions are selected differently now
2014-02-09T13:12:21 < Cyric> old style?
2014-02-09T13:12:31 < Cyric> they changed the instructions?
2014-02-09T13:12:42 < jpa-> the registers are quite different, yes
2014-02-09T13:12:56 < jpa-> the new version allows more specific configuration
2014-02-09T13:13:25 < Cyric> ok
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2014-02-09T13:13:56 < jpa-> but getting stuck in that while loops would be more likely to indicate missing clock to the usart peripheral
2014-02-09T13:15:05 < Cyric>  http://txt.do/1qgb
2014-02-09T13:15:08 < Cyric> this is my main
2014-02-09T13:15:36 < jpa-> first of all, you need to enable the GPIOA clock before configuring it
2014-02-09T13:16:31 < jpa-> also, you need to initialize the GPIO_InitTypeDef structs to something, otherwise the uninitialized fields will contain random crap
2014-02-09T13:17:08 < jpa-> same for every other struct - it is very easy to forget one field there and it can cause crazy trouble
2014-02-09T13:17:17 < Cyric> ok
2014-02-09T13:17:29 < Cyric> i will do that right now
2014-02-09T13:17:38 < Cyric> but for example for the RX pin
2014-02-09T13:17:40 < jpa-> IIRC there is a function for initializing them, though just = {}; will probably work for most
2014-02-09T13:18:13 < Cyric> but for example in the RX pin
2014-02-09T13:18:45 < Cyric> Speed and so on
2014-02-09T13:19:01 < jpa-> doesn't really matter much for this kind of thing
2014-02-09T13:19:04 < Cyric> i can initialize whatever i want
2014-02-09T13:19:05 < Cyric> okok
2014-02-09T13:19:16 < Cyric> good let me try
2014-02-09T13:19:17 < jpa-> it's only for reducing EMI
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2014-02-09T13:22:10 < Cyric> The RX pin is a Push pull or Open drain?
2014-02-09T13:22:17 < Cyric> i set it as OPEN DRAIN
2014-02-09T13:22:31 < Cyric> actually pp is better
2014-02-09T13:24:49 < jpa-> it's input
2014-02-09T13:26:48 < Cyric> yes but you said to initialize all the values od the structure
2014-02-09T13:26:53 < Cyric> also is not an imput
2014-02-09T13:27:03 < Cyric> gpiousart.GPIO_Mode = GPIO_Mode_AF;
2014-02-09T13:28:05 < jpa-> it's ok, it will be an input that just means the input/output state is controller by usart1
2014-02-09T13:28:07 < Cyric> or gpiousart.GPIO_Mode = GPIO_Mode_IN;?
2014-02-09T13:28:33 < Cyric> i have to configure as IN or as AF?
2014-02-09T13:29:17 < jpa-> and by initializing all the fields i meant something like   GPIO_StructInit(&mystruct);
2014-02-09T13:29:28 < jpa-> either probably works, i have used AF
2014-02-09T13:30:11 < Cyric>  http://txt.do/1qus
2014-02-09T13:30:15 < Cyric> this is the new code
2014-02-09T13:30:19 < Cyric> and still not work
2014-02-09T13:30:34 < jpa-> check the usart config registers in debugger
2014-02-09T13:30:51 < jpa-> if it gets stuck in the while loop, it has nothing to do with the gpio anyway
2014-02-09T13:31:52 < Cyric> it get stuck in the WHILE FLAG... if i remove it, the led blinks...
2014-02-09T13:32:24 < Cyric> while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
2014-02-09T13:32:35 < fbs> shouldnt that be SET?
2014-02-09T13:32:38 < jpa-> no
2014-02-09T13:33:00 < jpa-> but check the usart registers, status & CR1 especially
2014-02-09T13:33:10 < jpa-> compare with reference manual
2014-02-09T13:33:14 < Cyric> how can i ckeck it?
2014-02-09T13:33:18 < fbs> oh ofc, derp
2014-02-09T13:33:21 < jpa-> which debugger are you using?
2014-02-09T13:33:30 < Cyric> cocoox
2014-02-09T13:33:33 < Cyric> coide
2014-02-09T13:33:37 < jpa-> no idea
2014-02-09T13:33:55 < jpa-> in gdb you would do   "p /x USART1->SR"
2014-02-09T13:34:06 < jpa-> or just p /x USART1
2014-02-09T13:34:32 -!- txf_away is now known as txf
2014-02-09T13:35:03 < Cyric> but the code seems correct right?
2014-02-09T13:35:17 < jpa-> no idea, i have never used stdperiph
2014-02-09T13:35:25 < Cyric> i tried to flash it in two different discovery L1 board and noone works
2014-02-09T13:35:57 < Cyric> and this code is very basic....
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2014-02-09T13:36:37 < jpa-> it's much easier to find problems with a debugger than by staring at the code
2014-02-09T13:36:49 < jpa-> learn to debug, you are going to need that skill
2014-02-09T13:36:59 < Cyric> usart flag register is 128
2014-02-09T13:37:09 < fbs> GPIO_PinAFConfig(GPIOA,GPIO_PinSource10, GPIO_AF_USART1); seems wrong
2014-02-09T13:37:25 < fbs> but im not sure about the defines behind it
2014-02-09T13:37:30 < fbs> might end up being the same
2014-02-09T13:38:03 < jpa-> what is "usart flag register"?
2014-02-09T13:38:57 < Cyric>  if ((USARTx->SR & USART_FLAG) != (uint16_t)RESET)
2014-02-09T13:38:57 < Cyric>   {
2014-02-09T13:38:57 < Cyric>     bitstatus = SET;
2014-02-09T13:38:57 < Cyric>   }
2014-02-09T13:38:57 < Cyric>   else
2014-02-09T13:38:57 < Cyric>   {
2014-02-09T13:38:57 < Cyric>     bitstatus = RESET;
2014-02-09T13:38:58 < Cyric>   }
2014-02-09T13:39:17 < jpa-> that's not a register, it is the parameter for the flag you are checking for
2014-02-09T13:39:29 < jpa-> check USART1->SR
2014-02-09T13:39:49 < jpa-> and USART1->CR1
2014-02-09T13:40:45 < Cyric> SR = 0 and CR1 = 8024
2014-02-09T13:40:56 < Cyric> sorry
2014-02-09T13:41:07 < Cyric> 8204
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2014-02-09T13:41:48 < Cyric> fbs, why that instruction is wrong?
2014-02-09T13:42:17 < jpa-> CR1 seems fine
2014-02-09T13:42:20 < fbs> nah nvm
2014-02-09T13:42:42 < Cyric> ok
2014-02-09T13:43:05 < jpa-> i wonder why TXE is not going high in the SR
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2014-02-09T13:45:39 < Cyric> i still think that there is some stupid clock not enabled
2014-02-09T13:46:10 < jpa-> possible, but if you were able to read back the USART1->CR1 from the hardware, then atleast USART1 clock is indeed enabled
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2014-02-09T13:47:03 < fbs> dont you need to call systeminit() or something?
2014-02-09T13:47:55 < fbs> or is that handled in your startup file?
2014-02-09T13:48:22 < Cyric> i never called this instruction before
2014-02-09T13:48:53 < Cyric> and for the led blinking code it works even without systeminit instruction
2014-02-09T13:49:22 < fbs> its stuff supplied by ST or whoever, the ide might handle that for you
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2014-02-09T13:51:15 < fbs> hmm are you allowed to call GPIO_AFConfig before RCC_PeriphClckCMnd?
2014-02-09T13:54:34 < Cyric> http://txt.do/1quh
2014-02-09T13:54:57 < Cyric> the new code is this.. i already fixed that but it still not work
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2014-02-09T14:01:36 < fbs> what ist he reset value of the status register?
2014-02-09T14:01:59 < fbs> dont you need to send once before checking the txe bit?
2014-02-09T14:03:09 < Cyric> the led blinks once
2014-02-09T14:03:28 < Thorn> use volatile ints in delays
2014-02-09T14:03:42 < Cyric> this means the flag is initially clear
2014-02-09T14:03:46 < Thorn> otherwise the compiler can optimize the loop out
2014-02-09T14:04:36 < fbs> if its clear it shouldnt blink at all?
2014-02-09T14:04:38 < Cyric> and then try to send it, continue with the led blink and then get stuck when come back to check
2014-02-09T14:04:51 < Cyric> sorry is SET
2014-02-09T14:04:58 < Cyric> at the beginning
2014-02-09T14:05:01 < fbs> ah
2014-02-09T14:05:35 < fbs> i dont know, step through your program with the debugger and keep checking all the register values to see if they do what you expect
2014-02-09T14:06:04 < Cyric> no changes by using volatile
2014-02-09T14:08:53 < Cyric> USART1->SR & USART_FLAG_TXE) != (uint16_t)RESET)
2014-02-09T14:08:53 < Cyric>   {
2014-02-09T14:08:53 < Cyric>     bitstatus = SET;
2014-02-09T14:08:56 < dongs> b l o g g i n g
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2014-02-09T14:10:30 < Cyric> basically it does an AND between the SR register and the flag that i want to check...
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2014-02-09T14:12:32 < Cyric> now the value of the TXE register is 0x0080
2014-02-09T14:13:38 < Cyric> wich is correct
2014-02-09T14:14:52 < Cyric> but the USART SR is 0...
2014-02-09T14:16:42 < Cyric> when this condition is true?
2014-02-09T14:16:44 < Cyric> if ((USARTx->SR & USART_FLAG) != (uint16_t)RESET)
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2014-02-09T14:16:59 < Thorn> there is no TXE register
2014-02-09T14:17:22 < Cyric> not the register but the bit inside the TXE register
2014-02-09T14:17:43 < Cyric> sorry the TXE bit inside the SR register
2014-02-09T14:17:59 < Thorn> but you said that SR is 0
2014-02-09T14:18:10 < Cyric> yes
2014-02-09T14:19:21 < Cyric> if i say....       if ((0 & 128) !=RESET)
2014-02-09T14:19:35 < Cyric> what this means? is true or false?
2014-02-09T14:21:52 < Cyric> So basically it does an AND between the SR register (wich has value 0) and the EXPECTED TX FLAG value (128)...
2014-02-09T14:23:36 < Thorn> http://www.cprogramming.com/tutorial/bitwise_operators.html
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2014-02-09T14:32:22 < Cyric> ok basically the problem is that TXE is 0
2014-02-09T14:32:32 < Cyric> wich means 0: Data is not transferred to the shift register
2014-02-09T14:34:36 < Cyric> now the question is ... why this motherfxx do not transfer the data to the shift register?
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2014-02-09T15:10:44 < dongs> http://dailycurrant.com/2014/02/08/man-responsible-for-olympic-ring-mishap-found-dead-in-sochi/
2014-02-09T15:10:47 < dongs> rofl
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2014-02-09T15:35:38 < Thorn> dongs: I heard it was done on Mr. Putin's direct orders (the ring that didn't open represented north america)
2014-02-09T15:39:33 < fbs> Although his body was badly mangled and the wounds were consistent with a struggle, so far officials say they don't suspect foul play
2014-02-09T15:40:05 < zyp> it's a parody site, in case anyone didn't get that
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2014-02-09T15:50:20 < fbs> could  be real
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2014-02-09T16:05:08 < madis_> Thorn: that doesn't make sense. If the ring represented North America, shouldn't that man get an award from Putin ?
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2014-02-09T16:05:45 < Thorn> that's what I'm talking about
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2014-02-09T16:36:49 < dongs> death to america and all that
2014-02-09T16:43:20 < madist> I keeel you!
2014-02-09T17:08:31 < mumptai> xilence!
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2014-02-09T17:19:14 < Cyric> So guys from the STM reference manual...
2014-02-09T17:19:44 < Cyric> When a transmission is taking place, a write instruction to the USART_DR register stores
2014-02-09T17:19:45 < Cyric> the data in the TDR register and which is copied in the shift register at the end of the current
2014-02-09T17:19:45 < Cyric> transmission.
2014-02-09T17:20:24 < Cyric> so in my case the SART_DR register IS NOT copied into the TDR register...
2014-02-09T17:20:50 < Cyric> actually
2014-02-09T17:20:53 < Cyric> in my case
2014-02-09T17:21:18 < Cyric> The data is not moved from TDR to the shift register... any idea why this happens?`
2014-02-09T17:32:46 < gxti> because the transmitter is off
2014-02-09T17:33:34 < Cyric> how can i turn it on?
2014-02-09T17:35:14 < gxti> CR1_TE
2014-02-09T17:35:28 < Cyric> USARTuna.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
2014-02-09T17:35:29 < gxti> also make sure CR3_CTSE is off (flow control)
2014-02-09T17:35:40 < Cyric> they are
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2014-02-09T17:36:59 < Cyric>  http://txt.do/1qp2
2014-02-09T17:37:06 < Cyric> this is the main
2014-02-09T17:37:50 < Cyric> and it get stuck in the TXE bit wich does not go to 1
2014-02-09T17:39:08 < Cyric> the SR register is 0
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2014-02-09T17:45:51 < gxti> looks ok, although the rx pin should be input pullup, not af. keep the pinafconfig though.
2014-02-09T17:48:01 < Cyric> i read that from the STM32 migration from F to L family
2014-02-09T17:48:18 < Cyric> they have a specific example on how to configure USART pin
2014-02-09T17:48:28 < Cyric> but it does not work
2014-02-09T17:48:48 < Cyric> it 4 days that i am stuck with this sh*t
2014-02-09T17:49:05 < Cyric> what do you suggest?
2014-02-09T17:49:37 < Cyric> who can know that?
2014-02-09T17:50:07 < gxti> i've only done f1 and a little bit of f4 so i don't have specific advice
2014-02-09T17:50:26 < gxti> grab some sample projects from e.g. the discovery board
2014-02-09T17:50:31 < Cyric> ok.. thank you anyway.. i aappreciate it
2014-02-09T17:50:50 < Cyric> this is the L1xx discovery board
2014-02-09T17:51:48 < Cyric> basically i just want to print our one integer on the USART interface...
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2014-02-09T19:06:01 < kuldeepdhaka> compiled st demo example using gcc 4.8 and ended up in hardfault and then used the same pre-supplied binary (for the same program) and it works :(
2014-02-09T19:09:43 < PaulFertser> kuldeepdhaka: have you already tried those cool gdb macros for digging faults on stm32?
2014-02-09T19:10:30 < kuldeepdhaka> PaulFertser, no, idk about them
2014-02-09T19:11:34 < PaulFertser> kuldeepdhaka: https://github.com/Laurenceb/STM32-Logger/blob/master/jtag/armv7m-macros.gdb
2014-02-09T19:12:10 < kuldeepdhaka> PaulFertser, lemme see
2014-02-09T19:15:58 < gxti> noice
2014-02-09T19:18:18 < kuldeepdhaka> PaulFertser, will it work for m0?
2014-02-09T19:20:41 < kuldeepdhaka> (armv6m)
2014-02-09T19:21:29 < zyp> no
2014-02-09T19:21:49 < zyp> m0 doesn|t implement all the fault registers
2014-02-09T19:24:36 < PaulFertser> oh
2014-02-09T19:31:19 < jpa-> even master zyp is in trouble when it comes to m0 hardfaults :)
2014-02-09T19:32:20 < bvernoux> add canaries in your code ;)
2014-02-09T19:32:27 < bvernoux> (c) M$ ;)
2014-02-09T19:32:35 < Steffanx> PaulFertser whats the source of that or is it by Laurenceb himself?
2014-02-09T19:32:56 < jpa-> it was some other dude from this channel
2014-02-09T19:33:07 < Steffanx> ( Laurenceb  is quiet lately.. what's going on mr Laurenceb ?)
2014-02-09T19:33:28 < bvernoux> Laurenceb: I saw your logger it is not far from my project
2014-02-09T19:33:30 < karlp> Steffanx: it came from zippe some time ago
2014-02-09T19:33:54 < karlp> but he had just stuck it in a pastebin, so I don't know of a more "official" upstream source from him.
2014-02-09T19:34:26 < Steffanx> ok, thanks anyway :)
2014-02-09T19:34:55 < jpa-> you can tell by the spaces that it is not authentic laurenceproduct
2014-02-09T19:35:11 < Steffanx> ;)
2014-02-09T19:35:54 < Steffanx> btw i like your thesis jpa-.. to bad it doesn't cover all hte interesting parts :P
2014-02-09T19:36:14 < Steffanx> your writing style looks a bit non-academic to me though, but who cares :P
2014-02-09T19:36:24 < Steffanx> ( add more :Ps )
2014-02-09T19:36:29 < jpa-> yes, it probably is
2014-02-09T19:36:47 < jpa-> got a few complaints about "non-academic style" at a few places and fixed those
2014-02-09T19:37:19 < Steffanx> At least it was readable and understandable
2014-02-09T19:37:52 < jpa-> i didn't particularly enjoy writing it.. i think my bachelor thesis was much better (but that is in finnish)
2014-02-09T19:38:03 < jpa-> but who cares, i'll graduate
2014-02-09T19:42:31 < Steffanx> https://twitter.com/dongatory/status/431618029915344898 i see what you did there dongs ..
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2014-02-09T19:45:55 < emeb_mac> what did read somewhere - the flappybird dude is pulling down $50k/day? that's a nice income.
2014-02-09T19:46:19 < jpa-> but wasn't the game free? or does appstore pay also for free games?
2014-02-09T19:46:24 < Steffanx> Free
2014-02-09T19:46:31 < Steffanx> i understand it's all from ads
2014-02-09T19:47:01 < Steffanx> and now he wants to remove the game from the stores. ( or it is just a wonderful marketing trick )
2014-02-09T19:47:07 < Steffanx> That gut is famous now.
2014-02-09T19:47:07 < Steffanx> *guy
2014-02-09T19:47:08 < jpa-> oh well, two weeks of that and i'd be ready to quit also, just for the fun of it :)
2014-02-09T19:47:45 < PaulFertser> Steffanx: I think it was zippie's?
2014-02-09T19:48:15 < Steffanx> that's what karlp said.
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2014-02-09T19:50:15 < emeb_mac> cute: http://www.pocket-lint.com/news/126741-world-s-tiniest-quadcopter-the-nano-quadcopter-takes-to-the-skies-video
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2014-02-09T19:53:55 < gnomad> I think that is the same one as this which has been out for about six months now:  http://www.rcgroups.com/forums/showthread.php?t=2022465
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2014-02-09T20:12:22 < qyx_> how can anyone come with the idea of using 8bit pic to display jpegs on 320x240 lcd
2014-02-09T20:13:38 < Steffanx> use what you've got/are familiar with?
2014-02-09T20:14:34 < gnomad> we landed on the moon with less...
2014-02-09T20:15:31 < Steffanx> lol
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2014-02-09T20:17:31 < jpa-> qyx_: well, can it be done?
2014-02-09T20:18:55 < gnomad> heck people have gotten linux running on an 8-bit AVR...
2014-02-09T20:19:23 < jpa-> yeah, i have no doubts it can be done if you add external RAM
2014-02-09T20:19:44 < jpa-> probably one of the beefier pic18F's will decode jpegs without any trouble
2014-02-09T20:20:02 < jpa-> basically the worst part of the idea is why anyone would want to watch jpegs on a crappy 320x240 lcd
2014-02-09T20:20:41 < Steffanx> No the worst part is that people think they can do it without µGFX.
2014-02-09T20:21:23 < Steffanx> Sorry Tectu
2014-02-09T20:21:31 < jpa-> yeah ugfx decodes jpegs really well   https://bitbucket.org/Tectu/ugfx/src/f68f4fcd21831894a1330131d7feefa0e63c39c1/src/gdisp/image_jpg.c?at=master
2014-02-09T20:21:49 < Steffanx> Yeah i know ::P
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2014-02-09T20:24:47  * jpa- hits the piezo with a hammer
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2014-02-09T20:43:42 < emeb_mac> zap!
2014-02-09T20:59:21 < Cyric> http://www.youtube.com/watch?v=avbnkhvZrVo&feature=youtu.be
2014-02-09T20:59:33 < Cyric> uClinux on STM32F429I-DISCO
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--- Day changed Mon Feb 10 2014
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2014-02-10T00:48:02 < upgrdman> why would you put a resistor between the emitter and base of a PNP transistor? like page 2 of this:  http://www.sm0vpo.com/_pdf/2SB/2SB1324.PDF    ... i could understand for a FET, but why for a BJT?
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2014-02-10T00:57:22 < gxti> bloody QFNs, if i didn't have a hot air tool i'd be screwed
2014-02-10T00:58:03 < gxti> surprised i haven't cooked any yet
2014-02-10T00:58:44 < emeb> what did the QFNs do to you today?
2014-02-10T00:59:14 < zyp> «show on this doll where the QFN touched you»
2014-02-10T00:59:23 < gxti> at least one in every batch missolders, i think the grille i put boards on in the toaster oven isn't level enough
2014-02-10T00:59:50 < emeb> zyp: lol
2014-02-10T01:00:42 < emeb> gxti: how do they missolder?
2014-02-10T01:01:14 < gxti> misaligned mostly, sometimes it's aligned correctly but there's a bridge underneath that i can't see
2014-02-10T01:01:44 < gxti> upgrdman: biasing for analog stuff
2014-02-10T01:02:01 < gxti> no idea why a 'motor driver' would need it
2014-02-10T01:02:10 < upgrdman> :(
2014-02-10T01:02:18 < upgrdman> ok
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2014-02-10T01:05:00 < gxti> ah, faster turnoff it seems
2014-02-10T01:06:45 < Thorn> could be to ensure a defined state if base becomes floating. also forms a divider with a series base resistance
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2014-02-10T01:10:43 < Thorn> i.e. if the transistor is saturated and base becomes floating, it could take a long time for stored charges to recombine if not for that resistor (is that true?)
2014-02-10T01:11:18 < gxti> something like that, yes
2014-02-10T01:11:30 < gxti> it'll turn off but it needs to drain off that stored charge
2014-02-10T01:11:47 < gxti> of course if you connect the base to a mcu you're probably pulling it low anyway so the resistor is unneeded
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2014-02-10T01:12:53 < Thorn> that is true if you have a push-pull driver at all times, but what if the mcu resets and the pin goes hi-z
2014-02-10T01:13:18 < gxti> i think we're talking about quite short timescales here, it's not a FET
2014-02-10T01:13:37 < gxti> if you're not pulling down while PWMing it will perform poorly but if the driver stops entirely the transistor will turn off
2014-02-10T01:14:11 < emeb> is there really such thing as "stored charge" on the base of a BJT?
2014-02-10T01:14:16 < Thorn> http://forum.arduino.cc/index.php?topic=176964.0
2014-02-10T01:14:46 < gxti> unlike a FET it will drain off on its own
2014-02-10T01:14:51 < emeb> ie - the base isn't capacitively isolated like the gate on a FET.
2014-02-10T01:15:02 < Thorn> well, minority carriers
2014-02-10T01:15:53 < englishman> why is that guy running leds so fast
2014-02-10T01:16:27 < gxti> scanning a grid probably
2014-02-10T01:18:42 < BrainDamage> if you reverse bias it, howrever, it'll remain charged
2014-02-10T01:18:42 < BrainDamage> just like any diode
2014-02-10T01:18:51 < BrainDamage> ofc you're not supposed to put be junction in reverse bias in the first place since they have low breakdowns
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2014-02-10T02:12:05 < Thorn> rs-422
2014-02-10T02:17:18 < qyx_> lvds!
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2014-02-10T02:31:17 < BrainDamage> spin coupled coms!
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2014-02-10T03:45:12 < Thorn> turns out the display on the 429i-disco needs Vcc=2.8V (2.6 min...3.3 max)
2014-02-10T03:45:45 < dongs> smoke?
2014-02-10T03:45:49 < Thorn> maybe this is why they chose Vcc=3V and not 3.3
2014-02-10T03:45:57 < Thorn> datasheet
2014-02-10T03:46:23 < Thorn> https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Discovery/Attachments/7843/SF-TC240T-9370A-T_%E8%A7%84%E6%A0%BC%E4%B9%A6_IC-ILI9341.pdf
2014-02-10T03:46:56 < dongs> oh, interesting. you mean 429disco runs at 3V vcc for everything?
2014-02-10T03:47:09 < talsit> same with the 407disco
2014-02-10T03:50:19 < Thorn> 3.3V ldo -> diode -> 3V, standard for discovery boards afaict (but in this case it seems to actually make sense)
2014-02-10T03:51:56 < dongs> lol
2014-02-10T03:52:57 < dongs> i wonder how much cheaper
2014-02-10T03:53:01 < dongs> 3.3V ldo + diode
2014-02-10T03:53:02 < dongs> vs 3V ldo
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2014-02-10T03:53:58 < Thorn> it's been discussed here, I think all discovery boards are like that
2014-02-10T03:54:25 < dongs> 5.5V>3.3V ldo can be had for like 4-5c...
2014-02-10T03:55:20 < dongs> i guess if they're using ST's LDO its probably $0 for them..
2014-02-10T03:55:23 < Thorn> they use LD3985M33R, google says there's also LD3985M30R
2014-02-10T03:55:45 < dongs> http://www.st.com/web/en/resource/technical/document/datasheet/CD00003395.pdf their own datasheet says so
2014-02-10T03:55:53 < dongs> Wide range of output voltage: 1.22 V; 1.8 V; 2.5
2014-02-10T03:55:53 < dongs> V; 2.6 V; 2.7 V; 2.8 V; 2.9 V; 3 V; 3.3 V; 4.7 V
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2014-02-10T03:58:35 < dongs> exfcess food
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2014-02-10T04:20:06 < Thorn> my dmm says 2.93V
2014-02-10T04:28:55 < englishman> my f3disco is 3v
2014-02-10T04:29:08 < englishman> and f1disco
2014-02-10T04:29:12 < englishman> i thought they all were
2014-02-10T04:31:27 < Thorn> also, LD3985M33R is only rated @ 150mA, is it enough for the mcu, sdram, display with backlight etc.?
2014-02-10T04:31:42 < Thorn> not to mention anything users will connect to pin headers
2014-02-10T04:31:49 < dongs> heh
2014-02-10T04:33:29 < Thorn> I double-checked why I chose SPX3819M5 over that one for my last parts order and it's the current (500mA for the SPX)
2014-02-10T04:33:49 < dongs> heh
2014-02-10T04:33:57 < dongs> thats what im using too
2014-02-10T04:34:05 < dongs> when I need > 5.5V in
2014-02-10T04:34:10 < dongs> but RT9193 for 3.3V
2014-02-10T04:34:15 < dongs> er for <= 5.5V
2014-02-10T04:36:38 < gxti> dongs: all 10 assembled and working A+ would buy again
2014-02-10T04:36:43 < dongs> cool
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2014-02-10T04:39:25 < Thorn> display+backlight is 65mA, mcu can't be less than ~60-80mA (this is what F1 consumed iirc) and probably more
2014-02-10T04:39:37 < Thorn> doesn't look good lol
2014-02-10T04:42:20 < Thorn> and sdram needs 100mA when active
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2014-02-10T05:25:18 < kuldeepdhaka> im looking for usb device stack. tried porting libopencm3 usb :(   , tried compiling st usb code  :(     any suggestion ?
2014-02-10T05:25:44 < kuldeepdhaka> (st code endup in hardfault)
2014-02-10T05:29:30 < dongs> st code works for me
2014-02-10T05:29:43 < dongs> did you check hardfaul cause and fix it? :)
2014-02-10T05:29:54 < dongs> but for no-aids solution I use keil RL-USB
2014-02-10T05:31:14 < kuldeepdhaka> dongs, can you share your code with me?
2014-02-10T05:31:20 < dongs> kuldeepdhaka: which one? ST's shit?
2014-02-10T05:31:41 < kuldeepdhaka> dongs, stm32f072
2014-02-10T05:32:12 < dongs> oh huuu i dunno about that. where hte fuck did y ou get 072
2014-02-10T05:32:17 < dongs> i only used on F1/F4
2014-02-10T05:33:17 < dongs> dont they have usb samples on F072 disco?
2014-02-10T05:33:23 < kuldeepdhaka> what mainly i find is, it has a hsi48, and a usb dp pull up inbuild
2014-02-10T05:34:10 < dongs> cool
2014-02-10T05:34:54 < kuldeepdhaka> their are usb examples, i compiled them on gcc, but dont work
2014-02-10T05:35:01 < dongs> ah, gcc
2014-02-10T05:37:10 < kuldeepdhaka> ?
2014-02-10T05:40:46 < kuldeepdhaka> dongs, ?
2014-02-10T05:41:21 < dongs> what
2014-02-10T05:41:28 < dongs> i dunno, does ST even test their samples with gcc?
2014-02-10T05:41:34 < dongs> i thought they provide keil workspaces for all shit
2014-02-10T05:41:54 < emeb_mac> gcc works fine
2014-02-10T05:42:14 < emeb_mac> ST provides TrueStudio examples and that's basically gcc.
2014-02-10T05:42:38 < emeb_mac> just with a pretty GUI wrapper...
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2014-02-10T05:47:39 < aadamson> dongs was looking at the osd code, noticed it has the coox libs in it, did you use coox?  like it or too much overhead?
2014-02-10T05:47:52 < aadamson> been wondering about an rtos, so was curious
2014-02-10T05:48:30 < dongs> coos
2014-02-10T05:48:34 < dongs> yeah its there
2014-02-10T05:49:06 < aadamson> how was it to use? had you used it before?
2014-02-10T05:49:13 < aadamson> just trying to get a perspective
2014-02-10T05:49:33 < dongs> i only use for simpel task management. its fine.
2014-02-10T05:49:39 < dongs> simple and no useless aids
2014-02-10T05:49:42 < dongs> like CHIBIOS etc.
2014-02-10T05:49:51 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has quit [Ping timeout: 272 seconds]
2014-02-10T05:49:51 < aadamson> hehe, ya hear ya
2014-02-10T05:50:00 < dongs> or even  freertos
2014-02-10T05:50:02 < aadamson> may have to take a look I guess
2014-02-10T05:50:05 < dongs> no hal but sdtillaids
2014-02-10T05:50:10 < dongs> if you want something even simpler take a look at RTX
2014-02-10T05:50:14 < dongs> its free as in deadbsd
2014-02-10T05:50:15 < dongs> w/sores
2014-02-10T05:51:08 < dongs> http://www.keil.com/pr/article/1253.htm
2014-02-10T05:51:34 < aadamson> thanks I'll take a look at that
2014-02-10T05:51:53 < dongs> http://www.keil.com/fid/ytpqm0w1y9wj1wi1be11kysqhm39pb19tye6d1/files/eval/cmsis_rtos_rtx_v4p70.zip
2014-02-10T05:52:09 < dongs> its under /eval/ bfor some reason but its just full sores w/o limitations.
2014-02-10T05:52:19 < aadamson> k
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2014-02-10T09:17:45 < dongs> zyp, the clowns are out of blue and white wire for your shit.
2014-02-10T09:17:49 < dongs> god damn fucking retards.
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2014-02-10T09:34:41 < emeb_mac> bloggin' furiously
2014-02-10T09:35:12 < dongs> why hte fuck are you still up
2014-02-10T09:35:28 < emeb_mac> watching a movie
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2014-02-10T09:37:20 < dongs> which one
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2014-02-10T09:37:48 < emeb_mac> Tommy
2014-02-10T09:41:10 < dongs> hm
2014-02-10T09:41:14 < dongs> apparently original request was anycolor
2014-02-10T09:41:32 < dongs> zyp: ping, what do you want for colors, cuz your drawing is bla bla but my original email is apparently "anycolor"
2014-02-10T09:41:35 < dongs> i forgot the convo
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2014-02-10T11:10:20 < vadmeste> Hello everybody. I wonder why my applicaton works just after flashing my binary image on my STM32F429i-disco but not after repluging the USB cable. Did anyone see this problem before ?
2014-02-10T11:15:16 < dongs> are you flashing it to ram?
2014-02-10T11:16:49 < madist> -.-
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2014-02-10T11:21:39 < vadmeste> I am flashing like that ./st-flash write out/demo.bin 0x8000000, it works after flashing, but after replugging the usb cable, it doesn't..
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2014-02-10T11:23:41 < dongs> R2COM: you should watch RED2
2014-02-10T11:25:10 < dongs> yes
2014-02-10T11:25:15 < dongs> and this hilarious korean dude.
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2014-02-10T11:28:04 < zyp> dongs, hmm, what colors do they have then?
2014-02-10T11:28:12 < dongs> zyp, i think i solved it
2014-02-10T11:28:18 < dongs> just told them to shut up and do it as customer said
2014-02-10T11:30:38 < Thorn> Idd mcu = 88mA on 429i-disco (measured at JP3), so 65+88+bursts up to 100 (sdram) and LDO is 150mA max
2014-02-10T11:31:13 < Thorn> oh and st-link is powered from the same 3V
2014-02-10T11:34:49 < Thorn> I need a usb cable with a cut Vbus to measure total current
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2014-02-10T11:41:41 < dongs> how;d you convert vbus tap into total current on 3.3V
2014-02-10T11:41:45 < dongs> gona consider ldo loss?
2014-02-10T11:43:36 < karlp> Thorn: no need to cut the cable: http://dx.com/p/3-3-led-4-digit-red-display-0-10v-0-5a-usb-power-charger-current-voltage-tester-blue-silver-284467#.UvifN-dGmak
2014-02-10T11:46:15 < Thorn> I've been thinking about such a device but with more connectors
2014-02-10T11:48:46 < dongs> 4 digit is shit
2014-02-10T11:48:48 < Thorn> ldo  input current = output currents + quiescent current (should be in the datasheet) right?
2014-02-10T11:48:48 < dongs> need super accurate
2014-02-10T11:49:04 < Thorn> s/currents/current/
2014-02-10T11:50:34 < Thorn> more like 3 digits, see last image
2014-02-10T11:51:01 < Thorn> it displays "U"/"A" in the 4th position
2014-02-10T11:52:05 < Thorn> anyway if the ldo on the 429i-disco is actually 150mA max as per the schematics it's really overloaded
2014-02-10T11:52:22 < karlp> here, pay more, get only two digits: http://dx.com/p/usb-terminal-power-adapter-voltage-current-tester-white-black-274672#.UvihF-dGmak
2014-02-10T11:53:39 -!- claude is now known as Claude
2014-02-10T12:03:35 < Cyric> so guys i am still struggling for printing out one char on the usart.... I believe the problem is COOCOX compiler that make some mess so i would like to try the free version or KEIL... i installed it but is so messy!! 1. there is no GUI that let me choose the STM peripheral libraries to add to my project? 2. if not, how can i add it?
2014-02-10T12:04:33 < Thorn> https://launchpad.net/gcc-arm-embedded
2014-02-10T12:05:07 < Cyric> thorn, is that for me?
2014-02-10T12:05:32 < Thorn> yes, it's the latest and best version of gcc
2014-02-10T12:05:50 < Thorn> if you're actually having compiler troubles (unlikely)
2014-02-10T12:06:06 < Cyric> i have it already installed because i was using coocox
2014-02-10T12:06:35 < Cyric> well my 10 lines code seems correct...
2014-02-10T12:07:00 < Cyric> i am getting so frustrated! i even removed the LCD from the STM32L discovery!
2014-02-10T12:07:31 < Cyric> so i am running out of idea
2014-02-10T12:07:36 < karlp> jpa-: I like your sensor pin multiplexing and id thingy
2014-02-10T12:08:22 < Cyric> so do you think the problem may be COOCOX?
2014-02-10T12:08:28 < Cyric> is that reasonable?
2014-02-10T12:12:18 < dongs> Cyric: wut? there's no mess in keil, nobody is forcing you to use their hal/abstraction shit
2014-02-10T12:12:30 < dongs> Cyric: just add cmsis stuff + startup file and write your own main() doing whatever
2014-02-10T12:14:26 < Cyric> i have so much confusion in the argument... so ST Peripheral libraries are from ST right? so they should be good to use...
2014-02-10T12:14:33 < dongs> yes
2014-02-10T12:14:35 < dongs> thats what I use, works fine
2014-02-10T12:14:50 < Cyric> so can i use those libraries in keil?
2014-02-10T12:14:55 < dongs> yes
2014-02-10T12:15:04 < dongs> i use them in keil just fine.
2014-02-10T12:15:15 < dongs> there's nothing extra to do. add them to project, add to build path, done.
2014-02-10T12:15:15 < Cyric> ok good
2014-02-10T12:15:29 < Cyric> 1. where do you get those?
2014-02-10T12:15:41 < dongs> which stm32?
2014-02-10T12:15:55 < Cyric> l1 discovery (152rb9
2014-02-10T12:16:04 < Cyric> 152RB
2014-02-10T12:16:24 < Cyric> L series
2014-02-10T12:16:49 < dongs> http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/PF257913
2014-02-10T12:17:54 < Cyric> now i copy them to my project folder
2014-02-10T12:17:59 < Cyric> and thats it?
2014-02-10T12:18:20 < dongs> there's CMSIS and actual stdperiph.
2014-02-10T12:19:25 < dongs> i usually do something like : https://github.com/multiwii/baseflight/tree/master/lib and add relevant CMSIS\ and stdpirph\ folders to include path.
2014-02-10T12:19:31 < dongs> in your case you'd copy the shit under stsw-stm32077.zip\STM32L1xx_StdPeriph_Lib_V1.2.0\Libraries
2014-02-10T12:20:19 < dongs> stsw-stm32077.zip\STM32L1xx_StdPeriph_Lib_V1.2.0\Libraries\CMSIS\Device\ST\STM32L1xx\Source\Templates\arm has the startup file you need
2014-02-10T12:20:51 < dongs> and tempates dir has the system_stm32l1xx.c you need. everything else is optional.
2014-02-10T12:21:20 < Cyric> so i will not include the CMSIS from keil right?
2014-02-10T12:21:32 < Cyric> i will include this one
2014-02-10T12:21:39 < dongs> if its anything like F1 lib...
2014-02-10T12:21:43 < dongs> all you need is #include "stm32f10x_conf.h"
2014-02-10T12:21:43 < dongs> #include "core_cm3.h"
2014-02-10T12:21:53 < Cyric> ok
2014-02-10T12:22:07 < dongs> _conf is in templates somewhere
2014-02-10T12:22:17 < dongs> all it d oes is just includes all the crap stm32f_xxxxxx.h files
2014-02-10T12:22:26 < Cyric> so i will start a blank project and add those few files
2014-02-10T12:22:29 < dongs> yeah
2014-02-10T12:22:37 < dongs> and choose L151 or whatever you got
2014-02-10T12:22:41 < dongs> as processor
2014-02-10T12:22:43 < Cyric> ok
2014-02-10T12:22:50 < Cyric> let me try
2014-02-10T12:23:20 < dongs> you'll prob need to add some preprocessor shit, USE_STDPERIPH_DRIVER is required and probably something like STM32L15x_MD or whatever yourt device is
2014-02-10T12:41:26 < Cyric> it does not recognize my #include
2014-02-10T12:41:37 < Cyric> it seems that it does not see the files
2014-02-10T12:42:14 < Cyric> and on the left side they are in the same folder
2014-02-10T12:42:30 < Cyric> only they have a sort of key symbol on it
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2014-02-10T12:49:06 < Thorn> so the 429i-disco is not using the LCD controller core to drive the display?
2014-02-10T12:49:57 < Thorn> display is driven via SPI
2014-02-10T12:50:37 < Thorn> and has a controller chip with GRAM (ILI9341)
2014-02-10T12:52:23 < dongs> Cyric: add proper include paths to project properties.
2014-02-10T12:52:25 < Thorn> what's the point in connecting the whole 18-bit RGB bus to the MCU if HSYNC, VSYNC and DOTCLK aren't anyway
2014-02-10T12:56:13 < dongs> are tehy using that LCD in spi mode?
2014-02-10T12:56:47 < dongs> Cyric: key just means its readonly
2014-02-10T12:57:01 < dongs> Cyric: lib\CMSIS\CM3\CoreSupport;lib\CMSIS\CM3\DeviceSupport\ST\STM32F10x;lib\STM32F10x_StdPeriph_Driver\inc
2014-02-10T12:57:10 < dongs> i added this to my include path under project properties.
2014-02-10T12:57:21 < dongs> obviously slightly diff for your case.
2014-02-10T12:59:16 < dongs> In the United States, the United Kingdom, and many other countries, a contract to kill a person is void, meaning that it is not legally enforceable. Any contract to commit an indictable offense is not enforceable. Thus, if a hitman takes the money but then fails or refuses to perform, the customer cannot sue for specific performance or for damages for breach of contract.
2014-02-10T12:59:22 < dongs> haha
2014-02-10T12:59:55 < Thorn> is this good or bad for you dongs
2014-02-10T13:03:50 < Thorn> The TFT LCD is a 2.41" display of 262 K colors. Its definition is QVGA (240 x 320 dots) and
2014-02-10T13:03:50 < Thorn> is directly driven by the STM32F429ZIT6 using the RGB protocol. It includes the ILI9341
2014-02-10T13:03:50 < Thorn> LCD controller and can operate with a 2.8 ±0.3 V voltage.
2014-02-10T13:03:50 < Thorn> The STM32F429ZIT6 MCU controls this motion sensor through the SPI interface.
2014-02-10T13:04:16 < Thorn> this "motion sensor" lol
2014-02-10T13:06:20 < dongs> wut
2014-02-10T13:06:24 < dongs> fuckin retarded ST docs
2014-02-10T13:06:34 < dongs> is directly driven by the STM32F429ZIT6 using the RGB protocol. It includes the ILI9341
2014-02-10T13:06:38 < dongs> so is it RGB or SPI?
2014-02-10T13:07:34 < Thorn> you tell me lol. I'm going to look at the demo source and/or scope signals
2014-02-10T13:07:48 < dongs> i bet tectu knows
2014-02-10T13:08:43 < Thorn>  HSYNC, VSYNC and DOTCLK  are all tied high and not connected to the mcu according to the schematics. you can't do RGB without these afaik. why connect the RGB data bus to the MCU then
2014-02-10T13:08:55 < dongs> right
2014-02-10T13:09:59 < Thorn> which makes this board sort of pointless
2014-02-10T13:10:10 < dongs> ya SPI is pretty boring + slow
2014-02-10T13:10:11 < dongs> for LCD
2014-02-10T13:18:00 < Thorn> ah wait. the schematics is unclear, these signals are connected to the mcu after all
2014-02-10T13:18:14 < Thorn> ST is officially not retarded
2014-02-10T13:18:43 < Thorn> not yet sure what the demo uses though
2014-02-10T13:19:03 < Thorn> maybe that "motion sensor" is the touchscreen
2014-02-10T13:19:17 < Cyric> .\Serial2.axf: Error: L6320W: Ignoring --entry command. Cannot find argument 'Reset_Handler'.
2014-02-10T13:19:34 < Thorn> startup code is not linked
2014-02-10T13:20:07 < Cyric> what this means?
2014-02-10T13:21:00 < Cyric> ah ok ok
2014-02-10T13:21:06 < Cyric> let me try one thing
2014-02-10T13:24:35 < Thorn> oh well it's obvious what the demo uses, ILI9341 mode is set to 0110 (SPI). you need to resolder resistors to switch it to RGB
2014-02-10T13:25:51 < Cyric> how can i link the startupcode?
2014-02-10T13:25:53 < Thorn> (0402 resistors)
2014-02-10T13:36:52 < Thorn> so this 35679000 pixels/second according to the benchmark is over SPI?
2014-02-10T13:37:09 < Thorn> how many MHz would that require
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2014-02-10T13:44:05 < dongs> Cyric: add .s to the project..
2014-02-10T13:44:11 < dongs> from templates dir. i told  you this a while ago
2014-02-10T13:44:57 < Thorn> ok config signals are connected via solder bridges SB22...SB25 to the MCU but they're open by default (and described as "Reserved, do not modify")
2014-02-10T13:53:05 < dongs> Thorn: whats the point of config signals if RGB stuff isnt routed?
2014-02-10T13:53:06 < dongs> or is it?
2014-02-10T13:53:57 < Thorn> it is, it's just the schematics isn't making it obvious
2014-02-10T13:54:06 < dongs> ah
2014-02-10T13:54:37 < Thorn> but afaict there's no way to switch to the rgb mode in firmware by default (these SBs are open)
2014-02-10T13:55:09 < dongs> i dont remember, i have  ILIxxxx-something lcd somewehre, i remember i had to order it in SPI or RGB version
2014-02-10T13:55:20 < dongs> so in china trash at least its even diffrent pcb
2014-02-10T13:55:27 < dongs> probably stuff tied high/low by default
2014-02-10T13:55:57 < Thorn> google doesn't find much either. so all this needs further investigation
2014-02-10T13:56:48 < Thorn> this display does breaks config stuff (IM3...0) out
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2014-02-10T15:10:43 < Thorn> can anyone explain C25 & C26 (1uF Ta in the Vdda filter) - why Ta, ceramics must be much cheaper (429i-disco)
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2014-02-10T15:23:43 < Laurenceb_> attn zyp
2014-02-10T15:23:50 < Laurenceb_> http://spacenear.us/tracker/
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2014-02-10T15:34:14 < zyp> nice
2014-02-10T15:34:27 < zyp> looks like it passed right over my head three hours ago
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2014-02-10T15:56:33 < Cyric> StdLib\stm32l1xx_rcc.c(838): warning:  #223-D: function "assert_param" declared implicitly
2014-02-10T15:56:44 < Cyric> any idea why now i am getting this error
2014-02-10T15:56:50 < Cyric> on keil?
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2014-02-10T15:57:55 < Cyric> actually is not only that... its 74 similar errors :S
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2014-02-10T16:20:15 < Steffanx> Cyric:  google knows it
2014-02-10T16:20:43 < Steffanx> you probably have to declare USE_STDPERIPH_DRIVER
2014-02-10T16:21:08 < Cyric> well i fond a STM32 template for keil and imported it
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2014-02-10T16:24:02 < Steffanx> *define
2014-02-10T16:49:40 < fbs> i think you need stm32yyxx_conf.h for that
2014-02-10T16:50:00 < fbs> #define assert_param(expr) ((void)0)
2014-02-10T16:50:07 < fbs> #define assert_param(expr) ((expr) ? (void)0 : assert_failed((uint8_t *)__FILE__, __LINE__))
2014-02-10T16:50:19 < fbs> based on the USE_FULL_ASSERT define
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2014-02-10T17:22:26 < Cyric> my code was actually correct.. i spent 3 days trying to fix a correct code.... the problem is COCOOX... i tried to recomplile the code with KEIL and it works fine...
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2014-02-10T17:30:36 < gxti> mmhmm
2014-02-10T17:31:00 < gxti> if you like to ignore what the compiler is telling you then yeah switching might "fix" problems
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2014-02-10T17:35:38 < jpa-> karlp: yeah, it was pretty nice; most sensor connections were just a bunch of wires and a resistor thanks to the flexible interface on the device end
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2014-02-10T17:38:34 < Cyric> gxti... they compiler say that everything was fine.. and was flashing the code inside the uC
2014-02-10T17:38:42 < Cyric> *the
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2014-02-10T17:47:36 < chris_99> can anyone recommend an STM32 dev board, which i could add Zigbee onto easily per chance (i'm thinking of one that's at least 100MHz)
2014-02-10T17:47:47 < Cyric> ok ok i finally found the problem... It was the startup file of COIDE wich had problem... i sobstituted it whit another one and now is working fine
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2014-02-10T17:49:28 < Thorn> chris_99: any board with stm32f4 then (168 or 180MHz)
2014-02-10T17:50:33 < chris_99> Thorn, cheers, i'll check those out, is there a standard board i'd use to add Zigbee to those?
2014-02-10T17:52:27 < Thorn> no idea about that
2014-02-10T17:52:58 < Thorn> see http://www.st.com/web/catalog/tools/FM116/SC959/SS1532 , 3 discovery boards for stm32f4
2014-02-10T17:53:34 < gxti> discovery is cheap but not necessarily the best choice if you want to hook something up in particular... onboard peripherals tend to conflict with at least some of the IOs
2014-02-10T17:54:38 < chris_99> aha, i don't mind paying extra if it's got Zigbee on-board, but i've not seen anything like that
2014-02-10T17:54:44 < gxti> waveshare (wvshare.com) has some nice bare-bones boards but they cost more
2014-02-10T17:55:06 < gxti> i don't think i've seen anything specifically tailored for zigbee. maybe some "arduino compatible" board.
2014-02-10T17:57:15 < Thorn> shouldn't be difficult to design such a board yourself
2014-02-10T17:58:40 < chris_99> true
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2014-02-10T18:20:34 < Thorn> (void)operator+(a, a);
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2014-02-10T18:30:50 < PaulFertser> LPC314x has just one UART, wtf?
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2014-02-10T18:32:34 < fbs> http://www.wvshare.com/product/Open407V-D-Standard.htm looks interesting, anyone experience with it + addons?
2014-02-10T18:33:04 < karlp> PaulFertser: why would you buy an arm9 these days?
2014-02-10T18:33:10 < Steffanx> i do fbs, it's ok :)
2014-02-10T18:33:11 < Steffanx> it works
2014-02-10T18:33:15 < PaulFertser> karlp: inside Neato XV-11
2014-02-10T18:33:23 < fbs> ah
2014-02-10T18:33:28 < karlp> PaulFertser: fair enough :)
2014-02-10T18:33:29 < fbs> what did you pay for shippin Steffanx ?
2014-02-10T18:33:40 < Steffanx> i used their ebay shop no shipping
2014-02-10T18:33:44 < karlp> but yeah, interesting, usb, dual spi, dual i2c, dual i2s, only one uart
2014-02-10T18:33:46 < Steffanx> just a slightly higher priced product.
2014-02-10T18:33:53 < gxti> has the same problems as the discovery boards themselves, namely occupied IOs
2014-02-10T18:34:07 < Steffanx> and yeah what gxti says
2014-02-10T18:34:38 < jpa-> probably they estimated no need for uarts in the target application area..  but timer and usart cores are so tiny nowadays that one could throw a bunch of them there just to be sure
2014-02-10T18:35:31 < jpa-> (like ST has done :)
2014-02-10T18:35:41 < gxti> can never have too many
2014-02-10T18:35:47 < gxti> even if some of them are gimped
2014-02-10T18:36:02 < gxti> no sync or bidi or dma or whatever... still a uart
2014-02-10T18:36:21 < timemob> that wvshare board is great hold on lemme msg you my referral link... :p
2014-02-10T18:36:43 < fbs> lel
2014-02-10T18:36:46 < Steffanx> oh yeah, i forgot to say dongs is a partial owner of that company fbs
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2014-02-10T18:36:51 < jpa-> the gimped peripherals are annoying.. especially the retard comparator and his useless brother on STM32L1
2014-02-10T18:36:55 < fbs> oh
2014-02-10T18:37:01 < fbs> in that case, any alternatives?
2014-02-10T18:37:06 < timemob> lool
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2014-02-10T18:37:21 < fbs> im afraid he'll take my address and starts sending hatemail aabout my loonix usage
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2014-02-10T18:37:35 < gxti> i wonder if their 'core' boards are footprint compatible? probably not
2014-02-10T18:37:40 < timemob> fbs, it's rely is a great board tho,
2014-02-10T18:38:00 < gxti> ah maybe they are http://www.wvshare.com/img/devkit/Core407I/Core407I-3.jpg
2014-02-10T18:38:03 < fbs> was looking for stm + ethenet
2014-02-10T18:38:06 < Steffanx> gxti, foot print compatible?
2014-02-10T18:38:11 < Steffanx> The modules are
2014-02-10T18:38:24 < Steffanx> What else you need?
2014-02-10T18:38:25 < fbs> http://www.wvshare.com/help-pages/Compatibility-between-boards-and-peripherals.htm
2014-02-10T18:38:28 < gxti> fbs: here you go then: http://www.wvshare.com/product/XCore407I.htm
2014-02-10T18:38:48 < PaulFertser> karlp: btw, at work we get i.MX25 for cheap enough so it's not obvious what faster/better chip we could be getting for that price.
2014-02-10T18:39:33 < timemob> they have Ethernet phy breakout stuff that plugs into -open boards
2014-02-10T18:39:52 < timemob> if you want something more integrated olimex has some cheap stuff
2014-02-10T18:40:12 < karlp> them mips cores in some of these atheros wifi socs only have one uart too, fwiw
2014-02-10T18:40:18 < Steffanx> mr Tectu wasn't really happy with those board iirc timemob
2014-02-10T18:40:29 < timemob> olimex?
2014-02-10T18:40:30 < Steffanx> the olimex ones that is.
2014-02-10T18:40:53 < timemob> probably cuz they refused to send him for free for being chibios troll
2014-02-10T18:41:08 < Steffanx> i think he actually received them for free
2014-02-10T18:42:21 < timemob> he could always check out matchboxarm...
2014-02-10T18:42:28 < Steffanx> are they shipping them yet?
2014-02-10T18:43:07 < timemob> some guy got his... but apparently they shipped without bootloader
2014-02-10T18:43:13 < Steffanx> lol not really "when may the rest of us expect to receive them"
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2014-02-10T18:43:48 < timemob> so he needs to find some usbserial shit and hope they broke out boot0
2014-02-10T18:44:25 < fbs> timemob: what do i get for using your referall?
2014-02-10T18:45:12 < karlp> his eternal gratitude
2014-02-10T18:45:27 < timemob> slightly smaller chance of receiving a box full of dongs.
2014-02-10T18:46:21 < fbs> i wouldnt mind a box full of dongs
2014-02-10T18:46:42 < timemob> in that case you're all set
2014-02-10T18:47:06 < PaulFertser> http://xkcd.com/325/
2014-02-10T18:48:31 < timemob> I don't get it
2014-02-10T18:48:32 < fbs> but if dongs is partial owner, how can they sell rpis?
2014-02-10T18:49:07 < timemob> I've been leaving doge  feedback on eBay lately
2014-02-10T18:49:23 < timemob> seems nobody reads it anyway
2014-02-10T18:49:31 < englishman> Such deal. Wow
2014-02-10T18:49:36 < timemob> ya.
2014-02-10T18:53:42 < fbs> so whats your referall timemob ?
2014-02-10T18:54:07 < timemob> I'm joking. just go get them from eBay with freeship
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2014-02-10T18:54:19 < timemob> as Stefan said.
2014-02-10T18:54:36 < fbs> L<
2014-02-10T18:54:40 < fbs> :<
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2014-02-10T18:58:20 < timemob> tomorrow is a fucking holiday. another day wasted.
2014-02-10T18:58:25 < timemob> bbl
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2014-02-10T20:00:38 < Robint91> hi all
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2014-02-10T20:09:36 < fbs> hi
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2014-02-11T02:43:54 < Thorn> wtf http://www.wolfram.com/raspberry-pi/
2014-02-11T02:44:43 < gxti> old
2014-02-11T02:44:53 < zyp> yeah, that has been trolled already
2014-02-11T02:45:54 < chris_99> it's not just a Raspberry Pi anymore, it's a New Kind of Rapsberry Pi
2014-02-11T02:49:08 < emeb> New Out Of Box
2014-02-11T02:52:50 < gnomad> so, like arduino on steroids?
2014-02-11T02:53:54 < zyp> orduino on krokodil
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2014-02-11T03:00:59 < emeb> ardweenie on lsd
2014-02-11T03:02:03 < zyp> so japan apparently have their own kickstarter
2014-02-11T03:02:07 < zyp> https://motion-gallery.net/
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2014-02-11T03:41:29 < BrainDamage> any 10m tentacular monster projects on it yet?
2014-02-11T03:47:12 < Rickta59> any hints on how to configure a discovery board with stlink-v2 and openocd to make reset halt work?
2014-02-11T03:47:31 < Rickta59> i have a stm32f0discovery board connected to an lpc1114
2014-02-11T03:47:48 < Rickta59> i can get it program and debug
2014-02-11T03:47:53 < Rickta59> but reset seems to be a problem
2014-02-11T03:48:26 < Rickta59> reset_config srst_only srst_nogate connect_assert_srst
2014-02-11T03:48:29 < Rickta59> i've tried that
2014-02-11T03:49:24 < Rickta59> with pin 5 of CN3 connected to the reset pin on the lpc1114
2014-02-11T03:49:57 < Rickta59> i have the only prins connected to their respective pins
2014-02-11T03:50:25 < Rickta59> 1 to VDD, 2 to SWCLK, 3 GND, 4 SWDIO, 6 - NC
2014-02-11T03:50:51 < Rickta59> powering from the 3v from the discovery board
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2014-02-11T04:28:34 < PaulFertser> Rickta59: that looks like correct config provided pin 5 of CN3 is really reset there.
2014-02-11T04:30:20 < Rickta59> http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00050135.pdf#page=16 PaulFertser
2014-02-11T04:30:52 < Rickta59> i can successfully load new code and debug it
2014-02-11T04:30:57 < Rickta59> just reset is an issue
2014-02-11T04:31:43 < PaulFertser> Rickta59: but probably the lpc part doesn't support connect_assert_srst at all? And so you can use "reset_config srst_only" and reset halt will work but the halt will happen a bit later than the very first reset vector instruction?
2014-02-11T04:35:21 < Rickta59> http://pastebin.com/V3GSKey7
2014-02-11T04:35:28 < Rickta59> here is what i get with that
2014-02-11T04:36:30 < Rickta59> https://github.com/vsergeev/arm-bmw-sw/tree/master/openocd
2014-02-11T04:36:43 < Rickta59> i'm using those scripts and modifying debug.cfg
2014-02-11T04:39:15 < PaulFertser> Rickta59: "program" uses "reset init" and reset init does reset halt as its first step, so I don't really see how it works...
2014-02-11T04:40:15 < PaulFertser> Rickta59: I mean for proper flashing -c "program ..." is recommended
2014-02-11T04:41:41 < PaulFertser> Rickta59: also, "load" from gdb should work provided you add appropriate gdb-load-hook
2014-02-11T04:42:00 < Rickta59> yeah i'm using load
2014-02-11T04:42:21 < Rickta59> after a 'monitor init', 'monitor halt'
2014-02-11T04:42:59 < PaulFertser> Rickta59: "init" is redudant here, once per openocd session is enough, and you have it in mydebug. If you add a hook, it'll do halt automatically too.
2014-02-11T04:43:20 < PaulFertser> Rickta59: hm, so you say that "reset halt" times out, but if you do "halt" a moment later, it halts, right?
2014-02-11T04:43:45 < Rickta59> reset halt times out
2014-02-11T04:43:52 < Rickta59> halt always works
2014-02-11T04:45:54 < Rickta59> http://pastebin.com/tmrj5dF0
2014-02-11T04:46:39 < PaulFertser> Rickta59: openocd -d3 might give more clues
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2014-02-11T05:25:10 < dongs> so stoned
2014-02-11T05:30:16 < madist> caught in adultery again ?
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2014-02-11T07:39:22 < dongs> hmm
2014-02-11T07:39:45 < dongs> is there something that would allow me to use my main pc keyboard as bt keyboard to a phone w/some software/switch
2014-02-11T07:39:51 < dongs> if not: im dickstarting this
2014-02-11T07:40:35 < dongs> Share Keyboard is an application that will allow users to use their computer keyboard to type notes, emails, or any other messages for their Android device right from their computer.
2014-02-11T07:40:40 < dongs> lame.
2014-02-11T07:41:45 < dongs> hmm that sounds super retarded
2014-02-11T07:45:17 < emeb_mac> dongs: what's "best practice" for solder paste mask - should it be same as copper or smaller?
2014-02-11T07:46:20 < dongs> i actually let my stencil place do the stuff - i dont send them paste layer at all
2014-02-11T07:46:29 < dongs> i think tehy just automatically d o pads =~ stencil
2014-02-11T07:46:32 < dongs> at least thats w hat it looks like to me
2014-02-11T07:46:35 < dongs> when i stencil stuff.
2014-02-11T07:46:47 < dongs> they will also automatically add bridges/etc to shit like large qfn bottoms and stuff
2014-02-11T07:47:37 < emeb_mac> dongs: ya - that was the next question - what to do about large pads in CSP/QFN
2014-02-11T07:47:56 < dongs> right, i just make it same shape as bottom pad
2014-02-11T07:48:02 < dongs> and stencil place will auotmatically add
2014-02-11T07:48:17 < dongs> required stuff so there's not like to omuch paste over it
2014-02-11T07:48:46 < emeb_mac> cool - that's an extra layer of sevice you don't get from cheapo places
2014-02-11T07:50:04 < dongs> yeah i dont think ohararp or wahtever that plastic stencil aidsplace is gonna do that..
2014-02-11T07:50:38 < englishman> dongs: feature request
2014-02-11T07:50:43 < englishman> turn off backlight when screen goes to sleep
2014-02-11T07:50:57 < dongs> yeah i'd need to enable usb
2014-02-11T07:51:07 < englishman> i'd need to plug these usbs into my computer too i guess
2014-02-11T07:51:11 < dongs> and have some app running that waits for wahtever window message
2014-02-11T07:51:20 < englishman> cant be done through dp?
2014-02-11T07:51:23 < dongs> no
2014-02-11T07:51:29 < englishman> aww.
2014-02-11T07:54:41 < englishman> Display Control
2014-02-11T07:54:41 < englishman> – AUX can be used to control display setting and operation
2014-02-11T07:54:59 < englishman> seems like lots of shit in aux channel actually
2014-02-11T07:55:11 < englishman> but not possible to talk to f1
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2014-02-11T08:13:58 < dongs> that would only work if  there was an actual display processor like in a monitor
2014-02-11T08:28:49 < dongs> k yoga2 ordered
2014-02-11T08:31:39 < Simon--> dongs: I looked for that a while ago (keyboard to phone).. only stuff I found was hacky..
2014-02-11T08:34:50 < dongs> Simon--: right
2014-02-11T08:34:54 < dongs> Simon--: lets dickstart it
2014-02-11T08:35:07 < dongs> some jewtooth dongle on pc side, and some software
2014-02-11T08:35:16 < dongs> just shows up as a bt keyboard, but input gets redirected to it.
2014-02-11T08:35:39 < Simon--> bluetooth without wire?
2014-02-11T08:35:48 < dongs> hm?
2014-02-11T08:35:49 < Simon--> er with wire ;)
2014-02-11T08:36:10 < dongs> no wire
2014-02-11T08:36:15 < dongs> dongle goes into pc/hub/whatever
2014-02-11T08:36:30 < dongs> point is, i wanna type on my phone while its sitting next to me on teh desk
2014-02-11T08:36:36 < dongs> but i have no interst in having yet another shitty keyboard
2014-02-11T08:36:37 < dongs> just for bd
2014-02-11T08:36:38 < dongs> bt
2014-02-11T08:36:47 < Simon--> probably like 10% hardware and 90% messing around with key mapping until it works
2014-02-11T08:36:52 < dongs> yes
2014-02-11T08:36:57 < dongs> well, no need to mess with anything
2014-02-11T08:37:22 < dongs> woudl more than 2 people use it tho?
2014-02-11T08:38:31 < dongs> theres some hack out there
2014-02-11T08:38:33 < Simon--> shrug
2014-02-11T08:38:36 < dongs> that makes you install assdroid input method
2014-02-11T08:38:42 < dongs> and it runs some client/server shit
2014-02-11T08:38:45 < dongs> and talks to kbd on pc
2014-02-11T08:38:47 < dongs> but thats retarded
2014-02-11T08:38:55 < Simon--> I was looking for one like x2vnc where you can just drag pointer off side of screen and start typing on / clicking on phone
2014-02-11T08:39:10 < Simon--> that used to work well with windows stuffs
2014-02-11T08:39:19 < dongs> yeah, right.. synergy-style crap
2014-02-11T08:39:26 < dongs> but that still requires lan or whatever
2014-02-11T08:39:48 < Simon--> yup
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2014-02-11T08:42:40 < Simon--> I think I looked at https://play.google.com/store/apps/details?id=com.liveov.skm
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2014-02-11T08:48:20 < dongs> # Restriction:
2014-02-11T08:48:20 < dongs> If your device is not ROOTED, you can use only USB connection.
2014-02-11T08:48:20 < dongs> Bluetooth connection : Microsoft bluetooth stack is recommanded.
2014-02-11T08:48:22 < dongs> ????????????????
2014-02-11T08:48:23 < dongs> wat
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2014-02-11T08:58:04 < dongs> http://www.amazon.com/gp/product/B001AJRIL4
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2014-02-11T09:00:35 < emeb_mac> keepin' it real.
2014-02-11T09:00:44 < dongs> You'll fucking suck.
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2014-02-11T14:17:15 < Steffanx> Laurenceb what are you up to lately?
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2014-02-11T15:07:01 < chris_99> hi, is there an STM324 discovery board with 512kB of RAM does anyone know
2014-02-11T15:10:36 < chris_99> it looks like 32F429IDISCOVERY may be the highest spec one?
2014-02-11T15:12:13 < effractur> the f407?
2014-02-11T15:13:40 < zyp> the f429i-discovery have an external sdram chip
2014-02-11T15:13:45 < zyp> I believe it's 8 MB
2014-02-11T15:13:47 < chris_99> i'm not sure theres a dev board from STM for that alas, but thanks effractur
2014-02-11T15:13:57 < chris_99> 64M zyp
2014-02-11T15:14:09 < effractur> well there used to be a stm32f407 discovery board
2014-02-11T15:14:10 < zyp> 64 Mb = 8 MB
2014-02-11T15:14:13 < effractur> is that disconinued ?
2014-02-11T15:14:24 < zyp> effractur, there is, but that one doesn't have extra memory
2014-02-11T15:14:30 < chris_99> oh sorry zyp i thought it meant MB
2014-02-11T15:14:57 < effractur> a i that you meant flash not ram
2014-02-11T15:15:20 < chris_99> http://uk.farnell.com/stmicroelectronics/stm32f4discovery/stm32f407-usb-otg-discovery-kit/dp/2009276 that only has 192kB RAM
2014-02-11T15:15:28 < chris_99> oh right
2014-02-11T15:21:13 < chris_99> well the stm32429 looks really nice: 2 Mbytes Flash, 180 MHz and 256kB RAM
2014-02-11T15:21:44 < chris_99> has anyone here used eLua before out of interest
2014-02-11T15:22:00 < chris_99> i'm planning on using it with Zigbee
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2014-02-11T15:33:19 < Steffanx> i think a few here used it chris_99, dont remember who.
2014-02-11T15:33:30 < Steffanx> one of them used lua, not elua.
2014-02-11T15:34:13 < chris_99> oh interesting, i just checked out the eLua roadmap and it looks like there may not be network support on the stm32 version
2014-02-11T15:34:16 < Steffanx> oh it was dekar. He even used it in a commercial product, so his co-workers could write code for the product very easily
2014-02-11T15:34:25 < chris_99> oh neat!
2014-02-11T15:36:07 < GargantuaSauce> i messed with eLua a bit
2014-02-11T15:36:28 < chris_99> did you do any networking stuff with it per chance?
2014-02-11T15:36:53 < GargantuaSauce> i found its hardware support lacking, and if you're going to write your own HAL you may as well just roll your own lua support like dekar
2014-02-11T15:37:56 < chris_99> aha interesting, yeah it looks like ill have to write zigbee support myself
2014-02-11T15:38:40 < GargantuaSauce> it probably already supports the uart so that might be straightforward from within lua
2014-02-11T15:39:19 < chris_99> mm yeah
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2014-02-11T18:38:05 < Laurenceb> http://www.youtube.com/watch?v=-7x7GYItzS4&feature=player_embedded
2014-02-11T18:38:07 < Laurenceb> lolling
2014-02-11T18:38:27 < Laurenceb> 6:10
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2014-02-11T18:48:11 < chris_99> oh heh i saw that
2014-02-11T18:48:58 < chris_99> why she is in charge of a gov. scheme to teach kids to code, if she can't herself, is beyond me
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2014-02-11T19:06:36 < Laurenceb> ooh new L0
2014-02-11T19:07:08 < Steffanx> Laurenceb is alive!
2014-02-11T19:09:53 < karlp> is it's power consumption substantiallyu better? or just marginally?
2014-02-11T19:10:00 < Steffanx> marginally..
2014-02-11T19:10:06 < Steffanx> ( imho )
2014-02-11T19:10:37 < Steffanx> maybe 1.2uA vs 0.8uA is not marginally.
2014-02-11T19:10:42 < Steffanx> it's both pretty low though.
2014-02-11T19:11:18 < Steffanx> ( in stopmode + rtc that is )
2014-02-11T19:12:03 < emeb> that the ones with USB & no xtal?
2014-02-11T19:12:12 < Laurenceb> yeah
2014-02-11T19:13:22 < Steffanx> and still preview/target so not available for > 1/2 year?
2014-02-11T19:13:31 < karlp> hrmm, about 6mA vs 11mA for running full speed though
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2014-02-11T19:15:54 < BrainDamage> I'd be happy if it's cheaper
2014-02-11T19:16:14 < Steffanx> cheaper than the l1?
2014-02-11T19:16:58 < Tectu_> F405 shit is new, right?
2014-02-11T19:21:38 < Steffanx> no, is it?
2014-02-11T19:25:57 < karlp> there's an l100 that is already a lot cheaper than the l15x
2014-02-11T19:26:17 < karlp> l0 looks to get teh crystal less usb, and also teh nicer uart periphs, and some timers taht stay running in low power modes.
2014-02-11T19:26:53 < jpa-> but no division operation :F
2014-02-11T19:27:31 < karlp> and no trace,
2014-02-11T19:27:32 < emeb> F405 is old
2014-02-11T19:27:40 < emeb> been using that for a couple years now.
2014-02-11T19:27:43 < karlp> I would have rather seen updated periphs on the m3 core, rather than m0+
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2014-02-11T19:32:23 < zyp> what are you doing that would make it sensible to go with m3 over m0, but not m4 over m3?
2014-02-11T19:33:18 < emeb> right - the F3 parts have M4 core and new periphs
2014-02-11T19:33:19 < karlp> or m4, but the m4 are all more $
2014-02-11T19:33:27 < karlp> f3 doesn't come in smaller stuff
2014-02-11T19:33:34 < emeb> huh? 48-pin?
2014-02-11T19:33:53 < emeb> or do you want QFN?
2014-02-11T19:33:59 < karlp> that would be nice
2014-02-11T19:34:14 < karlp> f3 doesn't have all the nice periphs though, it doesn't have the autobauding+rs485 uart for instance :)
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2014-02-11T19:35:40 < karlp> don't always need the flash/ram that the f3/f4 have either, but i guess that just means, "guess you only really need an m0+ then"
2014-02-11T19:36:16 < zyp> ;)
2014-02-11T19:36:35 < zyp> f072 would probably be a great fit for my HID board
2014-02-11T19:36:52 < zyp> and my next nfc-keypad board
2014-02-11T19:36:56 < zyp> shame it's not available yet
2014-02-11T19:37:14 < Laurenceb> http://www.youtube.com/watch?v=_UmOCKFigME
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2014-02-11T19:37:55 < Laurenceb> dissapointed by title
2014-02-11T19:38:09 < Steffanx> dissapointed by the entire video
2014-02-11T19:38:21 < Laurenceb> i was hoping for guidance
2014-02-11T19:38:31 < Steffanx> ( yes i watched the 5 minute video is 3 seconds )
2014-02-11T19:40:04 -!- Intelaida [~webchat@188.134.9.161] has quit [Ping timeout: 245 seconds]
2014-02-11T19:41:49 < madist> I wish youtube had a way to change the playback speed. there are plenty of videos which i don't watch because they're too long, but i would watch them if i could playback at 1.5x or 2x
2014-02-11T19:42:46 < emeb> just scan the thumbnails in the progress bar.
2014-02-11T19:44:29 < zyp> that's why I don't watch video explanations of stuff
2014-02-11T19:45:04 < emeb> I hate those
2014-02-11T19:45:24 < zyp> good it's not just me
2014-02-11T19:45:25 < emeb> Just write it down & add a few pictures.
2014-02-11T19:45:50 < emeb> text & illustrations is random-access
2014-02-11T19:45:58 < emeb> video is sequential - fail.
2014-02-11T19:46:01 < zyp> yeah
2014-02-11T19:46:36 < BrainDamage> also it cannot be indexed
2014-02-11T19:46:44 < BrainDamage> at least not as easy
2014-02-11T19:46:54 < emeb> I don't care to sit through a) all the "um", "err", etc, b) things I already know, c) things you got wrong.
2014-02-11T19:48:10 < Steffanx> so, emeb likes wikis
2014-02-11T19:48:31 < Steffanx> no, um err.. explain it very difficult and "fixed it for ya"-style
2014-02-11T19:48:39 < Steffanx> -no
2014-02-11T19:48:40 < zyp> what does wiki have to do with anything?
2014-02-11T19:49:03 < zyp> I like text explanations, I don't care whether it's on a wiki or not, as long as it hasn't been vandalized
2014-02-11T19:50:56 < emeb> ^ that
2014-02-11T19:51:14 < emeb> static pages in basic HTML is fine.
2014-02-11T19:52:36 < BrainDamage> http://motherfuckingwebsite.com/
2014-02-11T19:53:02 < zyp> :)
2014-02-11T19:54:57 < Steffanx> must be a website by emeb.
2014-02-11T19:56:52 < zyp> I pictured Samuel L. Jackson reading it
2014-02-11T20:14:38 < Steffanx> heh
2014-02-11T20:15:02 < Steffanx> Anyway, for me it totally depends on the subject. Math: i prefer text, something more practical: video
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2014-02-11T20:25:09 < Thorn> why is stm32f427/429 so expensive
2014-02-11T20:25:24 < jpa-> because it has lots of stuff
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2014-02-11T20:25:35 < Thorn> more than twice as expensive as f407
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2014-02-11T20:28:57 < madist> how much memory does it have ?
2014-02-11T20:29:41 < Thorn> 1 or 2 Mb of flash (and 1Mb versions don't seem to be cheaper)
2014-02-11T20:34:31 < Steffanx> hmm, jpa-'s fancy digikey stm32 price graphs don't show the 427 (yet)
2014-02-11T20:34:44 < Steffanx> guess it wasn't in stock a month ago
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2014-02-11T20:39:38 < jpa-> Steffanx: now it does
2014-02-11T20:40:05 < jpa-> hmm i guess i should extend the x range, these are getting so expensive
2014-02-11T20:40:30 < jpa-> hmm no, xrange is automatic :)
2014-02-11T20:41:33 < gxti> linky?
2014-02-11T20:41:38 < Steffanx> http://essentialscrap.com/tips/stm32prices/
2014-02-11T20:41:39 < gxti> wait there it is
2014-02-11T20:41:51 < Steffanx> No cronjob that calls make every week jpa-?
2014-02-11T20:41:57 < jpa-> Steffanx: once a month
2014-02-11T20:42:03 < jpa-> kicked one off manually
2014-02-11T20:42:20 < Steffanx> gxti, its on the wiki. The wiki does have useful info :)
2014-02-11T20:42:20 < jpa-> i'm not sure if digikey would get angry if i scraped it too often
2014-02-11T20:42:27 < gxti> i did look on the wiki but i missed it
2014-02-11T20:42:32 < emeb> lol motherfuckingwebsite.
2014-02-11T20:42:40 < emeb> does look like mine. :P
2014-02-11T20:43:30 < emeb> "Good design is as little design as possible." - some German motherfucker
2014-02-11T20:43:33 < Steffanx> At least your website has at least one photo on almost every page emeb
2014-02-11T20:43:47 < emeb> Steffanx: ya - overdesigned. :)
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2014-02-11T20:49:43 < Thorn> wait, so it isn't actually essentialcrap.com?
2014-02-11T20:49:57 < Thorn> I always thought that was the domain
2014-02-11T20:51:08 < bvernoux> for those interested by new low cost SDR HW you can register your interest for a production coming soon http://airspy.com/?page_id=53
2014-02-11T20:51:21 < bvernoux> it's open source project
2014-02-11T20:51:30 < bvernoux> host code is already on github
2014-02-11T20:52:40 < emeb> what's the target price?
2014-02-11T20:53:11 < Steffanx> Too bad the range is still only 1750MHz, 2.4GHz can be useful too.
2014-02-11T20:53:12 < Thorn> lpc43?
2014-02-11T20:54:10 < bvernoux> yep lpc4370
2014-02-11T20:54:24 < bvernoux> we are the 1st to use it
2014-02-11T20:54:35 < bvernoux> it can also be used a dev board ;)
2014-02-11T20:55:07 < Steffanx> your project bvernoux?
2014-02-11T20:55:10 < bvernoux> emeb: target price is 99USD if possible
2014-02-11T20:55:16 < emeb> bvernoux: kewl.
2014-02-11T20:55:34 < bvernoux> Steffanx: it is an other project made by me and Youssef
2014-02-11T20:55:46 < bvernoux> Steffanx: nothing related to STM32F4 boards or NFC
2014-02-11T20:56:01 < bvernoux> we also have OpenMOKO USB ID
2014-02-11T20:56:19 < bvernoux> https://github.com/airspy/host
2014-02-11T20:56:30 < bvernoux> firmware will be published later
2014-02-11T20:56:44 < bvernoux> with a big update for libopencm3 for lpc4370 support
2014-02-11T20:57:11 < emeb> bvernoux: does that use an on-chip ADC or is it in the front-end chip?
2014-02-11T20:57:17 < bvernoux> emeb: yes
2014-02-11T20:57:21 < emeb> :P
2014-02-11T20:57:25 < bvernoux> emeb: it is the main interest
2014-02-11T20:57:57 < bvernoux> emeb: the ADC inside is just amazing
2014-02-11T20:58:08 < emeb> OK - 80MSPS on-chip. Not bad
2014-02-11T20:58:10 < bvernoux> when used correctly ;)
2014-02-11T20:58:29 < emeb> Just DMA, or is there additional DSP in the chain?
2014-02-11T20:58:39 < emeb> (ie - not just CPU)
2014-02-11T20:58:54  * emeb reads the DS
2014-02-11T20:59:20 < bvernoux> DSP will be done later anyway at 20MSPS it is very hard to do any DSP with M4F ;)
2014-02-11T20:59:27 < bvernoux> as slower speed it will be ok
2014-02-11T20:59:36 < emeb> right - that's my concern
2014-02-11T20:59:41 < bvernoux> so DSP is done on host side
2014-02-11T21:00:00 < emeb> so it's roughly equivalent to an RTL-SDR dongle in that regard.
2014-02-11T21:00:03 < bvernoux> but M4F is free for lot of stuff
2014-02-11T21:00:19 < bvernoux> emeb: it is 12bits
2014-02-11T21:00:32 < bvernoux> emeb: and 10MHz IQ
2014-02-11T21:00:45 < bvernoux> rtlsdr is less than 8bits and 2.4MSPS in best case
2014-02-11T21:01:17 < Steffanx> Some can go up to 3.2msps not?
2014-02-11T21:01:28 < Steffanx> or was it 3.0
2014-02-11T21:01:30 < bvernoux> 3.2msps have some samples lost ;)
2014-02-11T21:01:38 < bvernoux> in our case 20MSPS is without any lost sample
2014-02-11T21:01:58 < bvernoux> and limited by USB 2.0 HS => 40MiB/s
2014-02-11T21:03:17 < bvernoux> anyway this version on the photo have less feature than next board
2014-02-11T21:03:26 < Thorn> bvernoux: have you seen http://www.arm.com/files/pdf/dspconceptsm4presentation.pdf ?
2014-02-11T21:03:29 < bvernoux> it was prototype version
2014-02-11T21:03:36 < bvernoux> TheSeven: yes i know that
2014-02-11T21:03:46 < bvernoux> oups Thorn  ;)
2014-02-11T21:04:27 < BrainDamage> actually rtlsdr is 8 bit @ 28MHz
2014-02-11T21:04:37 < BrainDamage> but the comm only handles up to 2.4
2014-02-11T21:04:53 < BrainDamage> with more equivalent bits ofc :p
2014-02-11T21:10:26 < bvernoux> 28Mhz are you joking ;)
2014-02-11T21:10:36 < bvernoux> rtlsdr is not programmable and extensible
2014-02-11T21:10:53 < qyx_> it wasnt meant to be
2014-02-11T21:10:56 < bvernoux> and 8bits is more 7bits ;)
2014-02-11T21:11:05 < qyx_> it wasnt even meant to be a sdr
2014-02-11T21:11:15 < bvernoux> yes for a cheap board rtlsdr is nice
2014-02-11T21:11:51 < emeb> bvernoux: looks nice. I'm def interested.
2014-02-11T21:12:05 < bvernoux> register online
2014-02-11T21:12:09 < emeb> done
2014-02-11T21:12:22 < bvernoux> everyone registered will have one in priority order of registration
2014-02-11T21:12:26 < bvernoux> at least for 1st batch
2014-02-11T21:12:42 < emeb> Already working on something in a similar vein, but with FPGA between the ADC/DAC and the ARM.
2014-02-11T21:13:03 < bvernoux> FPGA help a lot but it is also lot of work
2014-02-11T21:13:28 < emeb> bvernoux: hardware is simple, and I do FPGA for my day job, so it's not a stretch for me.
2014-02-11T21:13:44 < emeb> http://ebrombaugh.studionebula.com/embedded/bcc_s6/index.html
2014-02-11T21:13:51 < bvernoux> the hard part is to have a powerfull FPGA to handle the treatment in realtime
2014-02-11T21:14:05 < bvernoux> and it requires often big FPGA BGA with more than 400balls
2014-02-11T21:14:11 < emeb> nah.
2014-02-11T21:14:39 < bvernoux> ha yes using this spartan
2014-02-11T21:14:49 < emeb> that small S6 LX9 can do a full DDS with decimation. Sufficient to get 80MSPS down to audio rates.
2014-02-11T21:15:06 < emeb> and it's a $15 part in onesies.
2014-02-11T21:15:12 < bvernoux> but it is big ;)
2014-02-11T21:15:24 < emeb> only 144 pins.
2014-02-11T21:15:29 < bvernoux> our board is just a bit bigger than an usb dongle
2014-02-11T21:15:38 < emeb> if I wanted to do a BGA it could be a lot smaller.
2014-02-11T21:15:48 < bvernoux> yes
2014-02-11T21:16:12 < bvernoux> the problem is to have something cutsomizable like with a MCU
2014-02-11T21:16:18 < bvernoux> LPC is very nice for that
2014-02-11T21:16:38 < bvernoux> we can debug hard realtime and dump memory during execution with help of multicore
2014-02-11T21:16:38 < madist> what do you mean ?
2014-02-11T21:17:09 < bvernoux> and USB is so fast i doubt you can achieve this with FTDI chipset
2014-02-11T21:17:18 < bvernoux> max is 28MiB/s with FTDI i think
2014-02-11T21:17:28 < qyx_> small size is hardly a feature
2014-02-11T21:17:31 < qyx_> it could be lost more easily
2014-02-11T21:17:46 < bvernoux> qyx_: the ide is to have soemthing really portable
2014-02-11T21:17:50 < bvernoux> ide=> idea
2014-02-11T21:17:59 < bvernoux> liek the rtlsdr it is nice for that
2014-02-11T21:18:02 < qyx_> your notebook is also portable :>
2014-02-11T21:18:20 < bvernoux> qyx_: does i have say it is only for notebook ?
2014-02-11T21:18:32 < qyx_> nah
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2014-02-11T21:21:14 < bvernoux> anyway with new MCU and CPU lot of very funny stuff will appear
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2014-02-11T21:54:41 < Thorn> who wants to learn some vhdl https://class.coursera.org/digitalsystems-001/
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2014-02-11T21:55:37 < Ranewen> Thorn: me me me
2014-02-11T21:56:24 < Ranewen> Thorn: this is much better http://hamsterworks.co.nz/mediawiki/index.php/FPGA_course
2014-02-11T21:58:43 < Thorn> interesting, haven't seen that one
2014-02-11T22:00:59 < Ranewen> Thorn: me neither... i was told it was the best..
2014-02-11T22:01:14 < Ranewen> Thorn: still i passed my vhdl (without knowing the syntax)
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--- Day changed Wed Feb 12 2014
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2014-02-12T00:42:28 < Steffanx> Thorn that course is in english?
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2014-02-12T00:51:19 < Cyric> I use coocox with PRINTF functions on SEMIHOSTING... is it normal that my code in debug mode run perfectly,  while in normal mode get stuck??
2014-02-12T00:52:09 < madist> some major commercial products have been released in debug mode. you're in good company! ;)
2014-02-12T00:52:30 < zyp> I would guess it's not semihosting-related, but that you have a problem that only shows up with optimizations enabled
2014-02-12T00:54:04 < zyp> or do you mean running the same code having a debugger attached vs. not having a debugger attached?
2014-02-12T00:54:10 < zyp> if so, then yes
2014-02-12T00:54:33 < zyp> semihosting calls will trigger the debug interrupt handler, which are intercepted by the debugger when it is attached
2014-02-12T00:54:55 < zyp> but when the debugger is not attached, the debug interrupt will be passed on to your application handler
2014-02-12T00:55:02 < zyp> which is disabled until you enable it
2014-02-12T00:55:46 < zyp> so a semihosting call made with no debugger attached and debug handler not explicitly enabled will hang your application
2014-02-12T00:56:49 < Cyric> zyp..you are amazing...
2014-02-12T00:56:56 < Cyric> thanks
2014-02-12T00:57:00 < zyp> no problem
2014-02-12T00:57:13 < Cyric> one day i would like to shake your hand...
2014-02-12T00:57:32 < Cyric> :)
2014-02-12T00:57:36 < zyp> no problem, I'm also norwegian so I can't be that far away
2014-02-12T00:57:52 < Cyric> who told you that i am norsk?
2014-02-12T00:58:00 < zyp> getinternet.no
2014-02-12T00:58:30 < Cyric> ahah proxy?
2014-02-12T00:58:51 < Cyric> anyway.. yes i live in norway..
2014-02-12T01:01:18 < Thorn> Steffanx: both English and Spanish
2014-02-12T01:03:23 < fbs> oh
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2014-02-12T01:47:29 < dongs> http://yatai123.com.cn/product/1185698786-213867446/RF_VOD_Overlay_1550nm_Optical_Transmitter.html how the fuck does this work? does this put *entire* 47-1GHz spectrum over fiber??
2014-02-12T01:50:43 < englishman> why not?
2014-02-12T01:51:01 < dongs> thats a metric fuckton of bandwidth???
2014-02-12T01:52:27 < zyp> fiber has a metric fuckton of bandwidth
2014-02-12T01:52:27 < Thorn> afaik this is quite normal for fiber optics
2014-02-12T01:52:27 < englishman> doesnt regular tv coax go a bit higher?
2014-02-12T01:52:27 < zyp> yep
2014-02-12T01:52:27 < dongs> hmpf
2014-02-12T01:52:27 < Thorn> if you use FDM you can increase that 10x
2014-02-12T01:52:27 < Thorn> if not more
2014-02-12T01:52:47 < Thorn> also, tried keil. compilation is slow as hell. gcc compiles c++ faster than keil compiles c(!)
2014-02-12T01:52:56 < dongs> yes, it compiles slow
2014-02-12T01:52:57 < dongs> who cares.
2014-02-12T01:53:14 < Thorn> you compile 125 times a day.
2014-02-12T01:53:40 < dongs> it only compiles shit you change... so who cares
2014-02-12T01:53:46 < dongs> how many files do you edit at once
2014-02-12T01:53:56 < zyp> what the fuck do you compile that compilation times matter on a modern computer?
2014-02-12T01:54:01 < dongs> ^
2014-02-12T01:54:15 < zyp> or are you compiling on a rpi?
2014-02-12T01:54:49 < Thorn> it took a minute to compile an LTCD demo project for 429i-disco wtf
2014-02-12T01:54:55 < Thorn> all C
2014-02-12T01:56:24 < Thorn> I've got an opengl 3d engine thingy that I hack when I have nothing better to do (all c++, templates, boost), it takes 2.5 minutes to compile in release mode.
2014-02-12T01:56:38 < Thorn> (mingw 4.8)
2014-02-12T01:56:40 < GargantuaSauce> go compile libavcodec or something
2014-02-12T01:56:50 < GargantuaSauce> or all of qt
2014-02-12T01:57:04 < Thorn> qt takes hours even on modern computers
2014-02-12T01:57:48 < zyp> heh
2014-02-12T01:58:14 < zyp> hang on, I need to build qt and check
2014-02-12T01:58:20 < GargantuaSauce> i built vlc on an a10, you don't know pain until you do that
2014-02-12T01:58:56 < GargantuaSauce> actually i remember wxwidgets taking longer than qt
2014-02-12T01:59:02 < GargantuaSauce> which makes zero sense
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2014-02-12T02:02:31 < zyp> ok, qt is building, will report back with results :p
2014-02-12T02:03:16 < zyp> hmm, it's actually building with clang, not gcc, is that good enough for making whatever point I'm trying to make?
2014-02-12T02:03:30 < Thorn> I compiled a different version with a different compiler anyway lol.
2014-02-12T02:04:28 < GargantuaSauce> also re fibre bandwidth, 25Gbit single-mode fibre links are a thing these days
2014-02-12T02:04:36 < GargantuaSauce> so 1 GHz of bandwidth is not weird at all
2014-02-12T02:06:07 < zyp> do you mean single-mode or single-carrier?
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2014-02-12T02:06:33 < zyp> because DWDM lets you do way more than that by using multiple carriers
2014-02-12T02:07:00 < GargantuaSauce> i mean both i think
2014-02-12T02:07:32 < BrainDamage> they are mutually exclusive
2014-02-12T02:07:53 < BrainDamage> you cannot have a broadband single mode system
2014-02-12T02:07:53 < GargantuaSauce> wikipedia says otherwise
2014-02-12T02:08:04 < zyp> they are not
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2014-02-12T02:08:21 < zyp> single mode != single frequency
2014-02-12T02:08:48 < BrainDamage> as you increase bandwith, at one point the modes overlap
2014-02-12T02:08:56 < BrainDamage> but at that point, why multiple carriers
2014-02-12T02:09:05 < BrainDamage> use a single one that fits the whole fiber
2014-02-12T02:09:12 < BrainDamage> ehh the whole channel
2014-02-12T02:09:29 < BrainDamage> to reduce dispersion distortion?
2014-02-12T02:09:41 < zyp> dunno, but DWDM seems to be the shit
2014-02-12T02:10:12 < GargantuaSauce> i dunno about your fancy theoretical nonsense i am just basing my original statement on http://en.wikipedia.org/wiki/100GBASE-R#100GBASE-ER4
2014-02-12T02:11:06 < BrainDamage> so they are really narrowband close together
2014-02-12T02:11:19 < GargantuaSauce> would i be right in saying DWDM is the same thing as OFDM but specifically for optics
2014-02-12T02:11:39 < BrainDamage> not by how it's generated
2014-02-12T02:12:07 < zyp> no, it's not OFDM, just a sort of FDM
2014-02-12T02:12:28 < BrainDamage> yeah, normal radio pratice
2014-02-12T02:12:35 < zyp> I think one point of it is to have multiple users on one fiber
2014-02-12T02:12:38 < BrainDamage> one channel = one data link
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2014-02-12T02:13:44 < zyp> I know there are some FTTH systems where they just split one fiber to a neighborhood and then each customer has it's own wavelength on it
2014-02-12T02:14:09 < Thorn> FlexCOS is free and Open Source Smartcard Operating System https://github.com/FlexCOS/code
2014-02-12T02:15:07 < dongs> whaaat
2014-02-12T02:15:12 < dongs> whats the fucking point
2014-02-12T02:15:18 < dongs> clearly the guy never developed on actual smartcards
2014-02-12T02:15:27 < zyp> LICENSE_CUNT
2014-02-12T02:17:08 < dongs> the whole project seems liek a retarded troll
2014-02-12T02:17:12 < dongs> microblaze? freertos?
2014-02-12T02:17:15 < dongs> what a wa ste.
2014-02-12T02:17:45 < zyp> why would you develop on smartcards anyway?
2014-02-12T02:17:50 < dongs> since smartcards are halfduplex comms i dont even see any reason to bother wiht any kind of OS on them
2014-02-12T02:18:07 < zyp> what about that shit running java? :p
2014-02-12T02:18:28 < dongs> ive done some work on cards and 100% of the time all you need is a simple state machine / parser for incoming commands and code that calculates/replies/whatever its supposed to do
2014-02-12T02:18:31 < dongs> no idea.
2014-02-12T02:18:35 < Thorn> mow wait for a spartan-based smartcard kickstarter lol
2014-02-12T02:18:43 < dongs> shit i worked with was st19 and atmel at91sc or wahteaver shit
2014-02-12T02:18:47 < BrainDamage> do they have some crypto accelerator?
2014-02-12T02:18:54 < dongs> generally yes
2014-02-12T02:19:13 < BrainDamage> otherwise I cannot imagine how code is a simple state machine
2014-02-12T02:19:17 < BrainDamage> k
2014-02-12T02:19:28 < dongs> why does that matter?
2014-02-12T02:19:51 < dongs> if  you need to calculate osme ccrypto shit you just call a function doing it + push needed shit to hardware?
2014-02-12T02:19:53 < BrainDamage> well, it doesn't need an os for sure
2014-02-12T02:20:00 < BrainDamage> yes
2014-02-12T02:20:13 < dongs> on atmel shit at least, hw accel only did single blocks of stuff
2014-02-12T02:20:14 < dongs> no streaming
2014-02-12T02:20:24 < dongs> so you'd prepare a block for aes and submit it for processing
2014-02-12T02:20:31 < dongs> but you had to take care of IV/next block if its cbc etc.
2014-02-12T02:20:32 < BrainDamage> it was more like curiosity
2014-02-12T02:21:15 < GargantuaSauce> hmm i guess i bought a couple of 73S8009R and a smart card socket on a whim
2014-02-12T02:21:21 < GargantuaSauce> i should dick with those
2014-02-12T02:21:44 < dongs> seems useless
2014-02-12T02:22:01 < dongs> 73S8009R looks like a TDA8024 clone
2014-02-12T02:22:11 < dongs> you don't technically evne need that if your card can deal with 3V I.O
2014-02-12T02:22:20 < dongs> its just a buffer
2014-02-12T02:22:53 < dongs> yoiu can just hookup I/O pad to any usart on stm32 that has smartcard mode (I think all do?) and reset to any I/O
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2014-02-12T02:23:34 < GargantuaSauce> i guess. nice to do stuff "properly" if i'm messing with my credit card or something though :V
2014-02-12T02:23:46 < zyp> hmm, qt builds stuff with -DSTATICALLY_LINKED_WITH_WTF
2014-02-12T02:23:49 < dongs> chances are, a $5 usb reader off ebay will do just fine
2014-02-12T02:23:50 < zyp> sounds nice
2014-02-12T02:24:04 < Thorn> LOL
2014-02-12T02:24:25 < BrainDamage> is that a lib name or a comment from the authors?
2014-02-12T02:24:35 -!- zz_txf [~txf@146.185.153.97] has quit [Client Quit]
2014-02-12T02:24:50 < dongs> probably some Werygay Template Framework
2014-02-12T02:25:06 < dongs> more reasons to use moc to preprocess QT C++ code
2014-02-12T02:25:13 < dongs> fuck moc, moc sux, etc.
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2014-02-12T02:25:31 < zyp> that's why python is nice, no need for moc
2014-02-12T02:25:32 < zyp> :D
2014-02-12T02:26:00 < dongs> pfft
2014-02-12T02:26:31 < dongs> http://www.dogetek.co/game/
2014-02-12T02:26:34 < Thorn> so LTCD examples do work on the 429i-disco without the need to solder anything (but the 2 layer demo has some kind of jumping display bug, hopefully software)
2014-02-12T02:28:47 < zyp> WTF is web template framework, part of webkit
2014-02-12T02:29:21 < Thorn> http://stackoverflow.com/questions/834179/wtf-is-wtf-in-webkit-code-base
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2014-02-12T02:30:26 < Thorn> as in "the daily web template framework?"
2014-02-12T02:45:52 < zyp> wonder if the qt guys keep stuffing in new stuff as computers get faster to keep the compile time constant
2014-02-12T02:48:06 < BrainDamage> wait, you don't?
2014-02-12T02:48:50 < zyp> most of this shit sounds like I'm building a web browser
2014-02-12T02:50:26 < BrainDamage> it's probably pulling in webkit and all the deps
2014-02-12T02:50:52 < BrainDamage> ah durr you said few lines ago already >_>
2014-02-12T02:51:33 < zyp> yeah
2014-02-12T02:51:57 < zyp> to be fair, the webkit widget is pretty much a complete web browser
2014-02-12T02:52:59 < GargantuaSauce> yeah it basically is
2014-02-12T02:55:17 < GargantuaSauce> and it's got all the fixings of a media player, abstracting basically every OS feature, that ridiculous meta-object system...
2014-02-12T02:55:25 < GargantuaSauce> it's no wonder it's huge and growing
2014-02-12T02:55:38 < zyp> ah, yeah
2014-02-12T02:56:00 < GargantuaSauce> not to mention that the c++ gui api is basically second class to the magic javascript engine thing
2014-02-12T02:56:04 < zyp> I remember the stupid java course in uni
2014-02-12T02:56:06 < Thorn> rich text framework (not using webkit), two kings of opengl support layers, CSS-like stylesheets for widgets, Qt Quick
2014-02-12T02:56:39 < zyp> «are we allowed to use third party libs?» «yes, just make sure to include everything requred to run with the handins»
2014-02-12T02:56:58 < zyp> so I went with qt jambi instead of the silly shit included with java
2014-02-12T02:57:32 < GargantuaSauce> oh i guess it does media *encoding* too
2014-02-12T02:57:39 < zyp> then we had an assignment to do an mp3 player
2014-02-12T02:58:12 < BrainDamage> does it do HAL yet? :P
2014-02-12T02:58:18 < zyp> :p
2014-02-12T02:58:24 < zyp> oh, done
2014-02-12T02:58:28 < zyp> less than an hour
2014-02-12T02:58:51 < zyp> well, less than an hour real time, over six hours cputime
2014-02-12T02:58:57 < zyp> real	56m15.289s
2014-02-12T02:58:58 < zyp> user	370m20.246s
2014-02-12T02:58:58 < zyp> sys	31m58.148s
2014-02-12T02:59:54 < Thorn> how many cores do you have
2014-02-12T03:00:08 < zyp> four with HT, built with -j8
2014-02-12T03:00:30 < zyp> so it's only natural that cputime is somewhere between 4 and 8
2014-02-12T03:00:47 < dongs> qt sux
2014-02-12T03:01:01 < Thorn> any alternatives
2014-02-12T03:01:14 < dongs> wtl, but only works on real OS
2014-02-12T03:01:20 < zyp> gui stuff in general does, but I'm pretty sure qt is one of the least horrible options
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2014-02-12T03:02:42 < Simon--> tcltk!
2014-02-12T03:02:50 < zyp> largest problem with qt is probably that I'll have to bundle megabytes of libs with the applications I'm making with it
2014-02-12T03:02:52 < Thorn> motif
2014-02-12T03:03:03 < zyp> but it's 2014, who the fuck cares about megabytes
2014-02-12T03:03:24 < Simon--> as long as it fits on a floppy
2014-02-12T03:03:25 < Thorn> qt5 now includes ICU
2014-02-12T03:03:33 < zyp> ICU?
2014-02-12T03:03:38 < Thorn> which is huge
2014-02-12T03:03:48 < zyp> it was 5.2.1 I built, by the way
2014-02-12T03:04:09 < GargantuaSauce> now build all of boost
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2014-02-12T03:04:24 < zyp> :)
2014-02-12T03:04:29 < zyp> isn't that faster?
2014-02-12T03:04:41 < GargantuaSauce> probably. generally more painful though
2014-02-12T03:04:43 < Thorn> icudt51.dll alone is almost 22Mb
2014-02-12T03:04:58 < GargantuaSauce> at least when it's third party software using it
2014-02-12T03:04:59 < Thorn> most of boost is header only
2014-02-12T03:05:11 < zyp> yeah
2014-02-12T03:05:20 < GargantuaSauce> like minor version updates breaking the api
2014-02-12T03:05:21 < GargantuaSauce> yaay!
2014-02-12T03:05:37 < zyp> lots of traits stuff, that's pretty heavy on the compilation time
2014-02-12T03:06:28 < Thorn> (http://site.icu-project.org/)
2014-02-12T03:07:25 < zyp> it didn't build ICU here
2014-02-12T03:08:28 < Thorn> they may be shipping it in binary form
2014-02-12T03:08:41 < zyp> no, it was disabled by configure
2014-02-12T03:08:43 < zyp> http://paste.jvnv.net/view/ZWJsW
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2014-02-12T03:31:32 < dongs> cool
2014-02-12T03:31:54 < GargantuaSauce> i wish i had 24 of those
2014-02-12T03:33:15 < dongs> GargantuaSauce: you should make a canbus servo
2014-02-12T03:33:24 < dongs> using some small F0 part
2014-02-12T03:33:34 < GargantuaSauce> i certainly plan to
2014-02-12T03:33:41 < GargantuaSauce> probably not canbus but rs-422 or something
2014-02-12T03:34:48 < GargantuaSauce> yeah i'd definitely put a lot of work into designing the protocol
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2014-02-12T03:35:22 < GargantuaSauce> yeah
2014-02-12T03:35:41 < dongs> zyp: furiously trying to beat a fucking invoice out of them. takes a week to assemble 1k.
2014-02-12T03:36:40 < GargantuaSauce> i guess it is prolific enough to probably be the go-to choice
2014-02-12T03:37:46 < zyp> dongs, ok, that's fine
2014-02-12T03:38:16 < GargantuaSauce> well i am definitely going to make some servos
2014-02-12T03:38:20 < zyp> I asked the other guy how many he needed, he said he'll get back to me
2014-02-12T03:38:26 < GargantuaSauce> whether they find their way to being a PRODUCT i dunno
2014-02-12T03:38:34 < GargantuaSauce> that shit's hard
2014-02-12T03:39:16 < GargantuaSauce> ah i'd be going a bit bigger
2014-02-12T03:39:33 < Thorn> aren't there military/aircraft/maybe even spacecraft buses based on CAN
2014-02-12T03:39:42 < GargantuaSauce> i want to scale up my hexapod a bit
2014-02-12T03:40:01 < GargantuaSauce> (and have proper torque/position feedback)
2014-02-12T03:40:58 < GargantuaSauce> need?
2014-02-12T03:41:28 < GargantuaSauce> well i already built one, now i want a better one
2014-02-12T03:41:45 < dongs> scaring cats
2014-02-12T03:42:17 < GargantuaSauce> pissing around, using it as a platform for implementing fancy locomotion and localization
2014-02-12T03:42:40 < BrainDamage> mount an autocannon an hunt down members of the FSF
2014-02-12T03:42:54 < dongs> zyp: fwdd invoice
2014-02-12T03:43:52 < dongs> as if you need 1mbps to talk to servos
2014-02-12T03:44:15 < GargantuaSauce> if there's a lot of them on one bus and you want a high update rate? yeah that is not unreasonable
2014-02-12T03:44:23 < Thorn> yes and payload is ~1/2 of the message or less
2014-02-12T03:44:36 < dongs> R2COM: yeah its called threads
2014-02-12T03:45:17 < GargantuaSauce> interrupt driven comms then
2014-02-12T03:45:33 < GargantuaSauce> anyway high speed is certainly an advantage
2014-02-12T03:46:24 < zyp> dongs, ok, paid
2014-02-12T03:46:53 < dongs> kk. they have everything and should have no further excuses.
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2014-02-12T03:55:18 < emeb> here's something for all you Digi-Key fans: http://spectrum.ieee.org/slideshow/semiconductors/devices/slideshow-a-day-in-the-life-of-digikey
2014-02-12T04:05:08 < englishman> wow, they are hand-picked
2014-02-12T04:06:08 < zyp> reminds me of that time I got some (ten) SO8 chips, each in it's own bag
2014-02-12T04:06:40 < zyp> those small blue bags, then all ten in another blue bag, then a normal bag around that again
2014-02-12T04:07:01 < BrainDamage> I got a sample from maxim that had 7 bags nested
2014-02-12T04:08:26 < BrainDamage> courier envelope, overall envelope, then one huge antistatic bag, then one bag for each component cathegory, and the component bag, and one for a short summary of the component, and the component tray
2014-02-12T04:08:32 < GargantuaSauce> probably a gearshaft sitting on two radial bearings/bushings without any axial constraint
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2014-02-12T04:29:13 < Thorn>  His customers include “everyone from people living in their mom’s basement building a perpetual motion machine to design engineers in large companies,” he says.
2014-02-12T04:29:46 < Thorn> he evidently doesn't know about ##stm32
2014-02-12T04:31:15 < BrainDamage> the 2 are not mutually exclusive
2014-02-12T04:31:36 < dongs> haha
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2014-02-12T04:54:36 < dongs> hm, need face pic of http://spectrum.ieee.org/ns/slideshows/2W_DigiKey6b/fullscreen/09.digikey_day1_0271.jpg
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2014-02-12T04:59:46 < Thorn> why no antistatic coats
2014-02-12T04:59:53 < Thorn> or wrist straps
2014-02-12T05:00:00 < dongs> nothing staticy goin on there
2014-02-12T05:00:06 < Thorn> on any photos
2014-02-12T05:00:43 < zyp> there is an antistatic mat on the table and a wrist strap hanging on the corner
2014-02-12T05:00:45 < zyp> looks like
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2014-02-12T05:33:32 < zippe> People that use autotools should be shot
2014-02-12T05:36:20 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has quit [Ping timeout: 265 seconds]
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2014-02-12T05:38:30 < Thorn> gnu autotools?
2014-02-12T05:38:45 < gxti> looool...
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2014-02-12T05:39:22 < gxti> "fucking opensores trash"
2014-02-12T05:44:01 < emeb_mac> I don't think he means that kind of autotools
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2014-02-12T05:45:02 < gxti> probably zippe did
2014-02-12T05:46:39 < emeb_mac> zippe probably meant autotools as in autoconf etc. R2COM likely meant autorouters
2014-02-12T06:01:18 < dongs> lunix misunderstanding
2014-02-12T06:01:25 < dongs> yeah autoconf+friends is fucking aids
2014-02-12T06:01:31 < dongs> lets launch 9000 shell processes per second
2014-02-12T06:01:34 < dongs> to check if <stdio.h> is present
2014-02-12T06:01:41 < dongs> IF YOUR SHIT WAS FUCKING STANDARD YOU WOULDN"T HAVE TO LOOK FOR IT
2014-02-12T06:01:45 < dongs> fucking retards
2014-02-12T06:01:52 < dongs> if all lunix faggots would stop wasting time making 2348723985378957 distros
2014-02-12T06:01:58 < dongs> and focus on one standard one that DOESNT SUCK
2014-02-12T06:02:02 < dongs> none of this would be a problem
2014-02-12T06:02:03 < dongs> </rant>
2014-02-12T06:02:19 < BrainDamage> the best part is that autofools tests for lib / path correctness by compiling a small test program
2014-02-12T06:02:26 < BrainDamage> guess why it's so slow and demanding
2014-02-12T06:02:28 < dongs> of course
2014-02-12T06:02:53 < dongs> and launching gcc itself opens like 23142 files
2014-02-12T06:03:29 < dongs> on windows, 10meg media player classic.exe has all the filters/codecs/bla bla bulit into a single file
2014-02-12T06:03:35 < dongs> VLC is 20893472389742738 files and it takes a year to startup
2014-02-12T06:03:42 < dongs> libfuckoff.1.so
2014-02-12T06:03:46 < dongs> that nobody else except VLC will EVER use
2014-02-12T06:03:48 < emeb_mac> lol
2014-02-12T06:04:15 < dongs> plot twist: media player classic is actually opensores
2014-02-12T06:04:19 < dongs> (done right)
2014-02-12T06:04:39 < dongs> vlc, crossplatform: sucks on all platforms it supports
2014-02-12T06:04:43 < dongs> i heard VLC on hiDPI displays is a joke
2014-02-12T06:04:46 < dongs> none of the UI scales
2014-02-12T06:04:56 < dongs> so on 3200x1800 screen  you get a VLC control panel the size of postage stamp
2014-02-12T06:05:06 < gxti> autotools is 1000x worse than it needs to be because it supports every UNIX that ever existed
2014-02-12T06:05:06 < emeb_mac> haha
2014-02-12T06:05:20 < gxti> so you can compile your AIDS on dragonfly BSD and AIX
2014-02-12T06:05:30 < dongs> and VMS
2014-02-12T06:05:40 < dongs> aix is way too newfag
2014-02-12T06:05:43 < gxti> except none of the applications actually support that shit, so basically it's going a bunch of checks that nobody cares about the outcome of
2014-02-12T06:05:53 < dongs> yeah
2014-02-12T06:06:02 < dongs> how many times do you give a fuck that legnth of command arguments is 32767
2014-02-12T06:06:08 < dongs> i guess you mignt with gcc
2014-02-12T06:06:18 < dongs> if you add a million -Ddefines to cmdline
2014-02-12T06:08:27 < emeb_mac> eh - MDK has a bazillion compile options too, they're just buried in the UI instead of on the cmd line.
2014-02-12T06:08:39 < dongs> but none of htem end up making cmdline > 32k chars
2014-02-12T06:09:54 < gxti> yeah and neither does automake or whatever
2014-02-12T06:10:10 < gxti> it's the OSes where the limit is retardedly tiny where you're screwed
2014-02-12T06:10:32 < gxti> and your closed sores compilers wouldn't save you there
2014-02-12T06:11:09 < dongs> my closed sores compiler wouldnt e vne work on that trash
2014-02-12T06:11:10 < dongs> so its irrelevant
2014-02-12T06:11:15 < dongs> irrelevant OSs dont need to be supported
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2014-02-12T06:12:18 < BrainDamage> there's a point where you want to fork off support for legacy crap
2014-02-12T06:12:28 < dongs> yeah but freetards forgot about that option
2014-02-12T06:12:38 < dongs> so everytime you compile hello world, gcc checks if its running on vax/vms
2014-02-12T06:12:57 < gxti> gcc doesn't, just auto-aids
2014-02-12T06:13:08 < gxti> nobody likes it
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2014-02-12T06:26:43 < dongs> hey emeb
2014-02-12T06:26:47 < dongs> im tweeting somethin in another chan
2014-02-12T06:26:56 < dongs> i noticed wvwsahre has a breakout board for this NXP dac
2014-02-12T06:26:58 < dongs> http://www.nxp.com/documents/data_sheet/UDA1380.pdf
2014-02-12T06:27:03 < dongs> why they keep saying MP3
2014-02-12T06:27:07 < dongs> does that shit have a mp3 decoder onboard or osmethign
2014-02-12T06:27:55 < gxti> no
2014-02-12T06:28:07 < dongs> whyt do they keep saying mp3
2014-02-12T06:28:08 < dongs> all over
2014-02-12T06:28:12 < gxti> marketing department
2014-02-12T06:28:14 < dongs> fuckign scammers
2014-02-12T06:29:11 < dongs> that shit is just a plain pcm/whatever codec right
2014-02-12T06:30:02 < gxti> i2s is i2s
2014-02-12T06:30:10 < dongs> right
2014-02-12T07:04:10 < emeb_mac> lol - 10yr old data sheet
2014-02-12T07:04:19 < emeb_mac> MP3 was hot shit back then I guess
2014-02-12T07:09:45 < emeb_mac> haha: http://www.devttys0.com/2014/02/cracking-linksys-crypto/
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2014-02-12T07:11:27 < englishman> .....wow
2014-02-12T07:11:44 < englishman> :)
2014-02-12T07:13:54 < emeb_mac> onoes - teh iranian navy is coming to get us!
2014-02-12T07:15:47 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has quit [Quit: This computer has gone to sleep]
2014-02-12T07:19:14 < emeb_mac> that's "nucular"
2014-02-12T07:19:42 < gxti> nookyularr
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2014-02-12T07:46:33 < PaulFertser> gxti: in my experience autotools are ok, but it's true many projects for some strange reason use it wrong.
2014-02-12T07:46:44 < dongs> you can use autoconf properly?
2014-02-12T07:48:19 < PaulFertser> dongs: I think I can, yes. I changed some parts of OpenOCD configure.ac and everybody was pleased with it.
2014-02-12T07:49:42 < dongs> did you remove checking for VMS
2014-02-12T07:50:27 < PaulFertser> $ grep -i vms build-native/config.log || echo not there
2014-02-12T07:50:27 < PaulFertser> not there
2014-02-12T07:50:34 < PaulFertser> Probably never was
2014-02-12T07:53:40 < dongs> http://www.engadget.com/2014/02/11/sony-walkman-water-bottle/ wat
2014-02-12T07:54:11 < PaulFertser> https://www.flameeyes.eu/autotools-mythbuster/
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2014-02-12T08:10:33 < dongs>  STM8S103F3U6TR
2014-02-12T08:10:37 < dongs> 57cents
2014-02-12T08:10:51 < emeb_mac> stm8 meh
2014-02-12T08:11:02 < dongs> i bet you got all excited when saw 103F
2014-02-12T08:11:08 < dongs> then like STM8, FUIUUU
2014-02-12T08:11:15 < emeb_mac> kinda sorta
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2014-02-12T09:11:39 < madist> is there something in the USB protocol that _requires_ current to be drawn from +5V ?
2014-02-12T09:12:21 < madist> i.e. is there something that won't work if you don't draw any power from +5V
2014-02-12T09:15:24 < dongs> no
2014-02-12T09:15:31 < dongs> self powered device doesn't need to draw shit
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2014-02-12T11:05:17 < dongs> whats the immediate load on arm
2014-02-12T11:05:23 < dongs> just LDR R3, cocks?
2014-02-12T11:05:25 < dongs> cocks being a constant
2014-02-12T11:16:39 < fbs> # for numbers, = for memory address
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2014-02-12T11:22:46 < Robint91_phd> hi all
2014-02-12T11:23:23 < Robint91_phd> seen that new STM32L0x3
2014-02-12T11:23:24 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has joined ##stm32
2014-02-12T11:23:33 < fbs> no
2014-02-12T11:25:04 < Robint91_phd> http://www.st.com/web/en/press/p3520
2014-02-12T11:25:21 < Robint91_phd>  87 µA/MHz
2014-02-12T11:25:26 < Robint91_phd> is very nice
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2014-02-12T11:30:41 < dongs> fuck
2014-02-12T11:30:45 < fbs> a duck
2014-02-12T11:30:52 < dongs> raging at armcc inline asm
2014-02-12T11:31:43 < fbs> poor you :o
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2014-02-12T11:35:53 < dongs> heh
2014-02-12T11:36:17 < dongs> it actually fucks up if you try to be smart
2014-02-12T11:36:19 < dongs> and optmize
2014-02-12T11:38:09 < fbs> #pragma (dont optimjize this shit -- dongs)
2014-02-12T11:38:41 < fbs> i think the best way is putting the code in a seperate file and compile with diff flags
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2014-02-12T12:03:40 < dongs> no this is diff
2014-02-12T12:03:45 < dongs> i had some shit like
2014-02-12T12:03:56 < dongs> register uint32_t basepri_value _asm ("r0");
2014-02-12T12:04:02 < dongs> register uint32_t basepri _asm("basepri");
2014-02-12T12:04:23 < dongs> so i did basepri_value = basepri, and it did the right thing, but then copied the arg to R4
2014-02-12T12:04:28 < dongs> and used it for compare later
2014-02-12T12:04:40 < dongs> i just did if (basepri != foo)
2014-02-12T12:05:06 < dongs> and it properly did msr basepri, r0, cmp r0, foo etc.
2014-02-12T12:05:18 < dongs> so was no need to force value to specific reg
2014-02-12T12:05:39 < dongs> er, MRS
2014-02-12T12:05:43 < dongs> not MSR
2014-02-12T12:12:38 < dongs> hm, its not inlining this shit
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2014-02-12T12:40:09 < Thorn> how do you print primask, faultmask, basepri in gdb?
2014-02-12T12:40:23 < Thorn> p $primask says "void"
2014-02-12T12:52:58 < dongs> i think youre supposed to use msr/mrs to get/set hem
2014-02-12T12:52:58 < dongs> them
2014-02-12T12:53:18 < zyp> yeah
2014-02-12T12:54:07 < Thorn> can you do that from gdb?
2014-02-12T12:54:13 < zyp> just do info registers
2014-02-12T12:54:28 < zyp> I believe basepri is included in that output
2014-02-12T12:54:29 < Thorn> not there
2014-02-12T12:54:52 < zyp> which gdbserver?
2014-02-12T12:55:05 < Thorn> bmp
2014-02-12T12:56:26 < zyp> hmm, strange, I seem to recall it was included
2014-02-12T12:56:51 < zyp> don't have one to test with here though
2014-02-12T12:56:52 < Thorn> only "special" is
2014-02-12T12:57:15 < Thorn> and xpsr
2014-02-12T12:57:28 < Thorn> (and standard ones of course)
2014-02-12T12:58:13 < zyp> it's in the list here, with a jlink
2014-02-12T12:58:24 < zyp> and I'm pretty sure I've seen it before with bmp too
2014-02-12T13:02:28 < zyp> dongs, I wonder about the logic analyzer, wrt. buffer size
2014-02-12T13:03:19 < zyp> can it still do long traces that wouldn't fit in the buffer, provided the data rate is not too fast?
2014-02-12T13:03:30 < zyp> and is there some sort of compression there?
2014-02-12T13:20:22 < dongs> the travelogioc shit?
2014-02-12T13:20:28 < dongs> yeus it has transition logging
2014-02-12T13:20:38 < dongs> so it records timestamp+transition only
2014-02-12T13:20:41 < dongs> instead of 100000 of 1
2014-02-12T13:20:50 < dongs> so you can log slow shit like i2c for quite a while
2014-02-12T13:21:14 < dongs> < zyp> it's in the list here, with a jlink
2014-02-12T13:21:17 < dongs> another win for closed sores
2014-02-12T13:24:21 < Thorn> wait
2014-02-12T13:24:38 < Thorn> that "special" thing includes all those registers doesn't it
2014-02-12T13:24:58 < Thorn> i.e. they're bit fields inside "special" no?
2014-02-12T13:25:24 < Thorn> 31:24 control, 23:16 faultmask, 15:8 basepri, 7:0 primask
2014-02-12T13:31:48 < zyp> dongs, but what about fast shit that's still slower than usb2?
2014-02-12T13:32:21 < zyp> or say transactional protocols that have bursts of data with idle times between
2014-02-12T13:53:04 < dongs> zyp, its same thing?
2014-02-12T13:53:08 < dongs> transition = only logs changes
2014-02-12T13:53:09 < dongs> thats all
2014-02-12T13:53:44 < dongs> so if it changes fast for a second then idles for 10, it doesnt care
2014-02-12T13:54:45 < dongs> zyp, any faster way of doing ldr r3, =imm; msr basepri, r3
2014-02-12T13:54:56 < dongs> no right, I guess? since arg for msr has to be in Rx
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2014-02-12T14:44:34 < zyp> dunno, I'd use an inline assembly statement with a constraint to tell the compiler to allocate a register and worry about how to get the value in there for me without doing it myself
2014-02-12T14:44:44 < zyp> or even an intrinsic for msr if that exists
2014-02-12T14:44:59 < zyp> but I don't know how to do that in armcc
2014-02-12T14:46:36 < dongs> there's better thing
2014-02-12T14:46:55 < dongs> it will automatically synthesize msr
2014-02-12T14:46:59 < dongs> all you need to do is something like
2014-02-12T14:47:00 < dongs> register uint32_t basepri __asm("basepri");
2014-02-12T14:47:18 < dongs> then all you do is basepri |= foo;
2014-02-12T14:47:28 < dongs> but im not sure why gcc guy chose to force R3
2014-02-12T14:47:36 < zyp> probably no reason
2014-02-12T14:47:36 < dongs> im thinking its because R0..R2 is used for args passing
2014-02-12T14:47:42 < dongs> and if that shit is inlined or wahtever
2014-02-12T14:47:49 < dongs> it would reduce possible required pops/pushs?
2014-02-12T14:47:54 < dongs> to save regs
2014-02-12T14:48:12 < zyp> that's why I'd let the compiler worry about that
2014-02-12T14:48:18 < dongs> mkay
2014-02-12T14:48:38 < dongs> And the competition helps keep Linux
2014-02-12T14:48:38 < dongs> honest, which is important because Linux is effectively unforkable,
2014-02-12T14:48:38 < dongs> has a poor history of responsiveness to concerns of some of its
2014-02-12T14:48:38 < dongs> downstream userbases, and has a nearly-unuseable governance setup.
2014-02-12T14:48:39 < dongs> haha
2014-02-12T14:49:05 < zyp> when the compiler gets to choose, it can pick something different each time it's inlined, depending on what's best suited when considering other register usage
2014-02-12T14:49:12 < dongs> ya ok
2014-02-12T14:49:15 < dongs> lemem try that
2014-02-12T14:49:27 < zyp> 12:53:44 < dongs> so if it changes fast for a second then idles for 10, it doesnt care
2014-02-12T14:49:32 < zyp> also, that's not what I asked
2014-02-12T14:49:38 < dongs> izzit?
2014-02-12T14:49:40 < dongs> do tell
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2014-02-12T14:50:11 < zyp> I meant to ask whether the buffer will be emptyed as fast as possible to make room for more
2014-02-12T14:50:26 < dongs> no
2014-02-12T14:50:28 < dongs> it wont be
2014-02-12T14:50:30 < dongs> its one-shot
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2014-02-12T14:50:34 < dongs> well, you can make it run repeatedly
2014-02-12T14:50:36 < dongs> but you lose previous data
2014-02-12T14:50:57 < dongs> so it goes acquisition until buffer full or until specified threshold -> unload to usb
2014-02-12T14:51:03 < dongs> it will not 'stream'
2014-02-12T14:51:03 < zyp> oh, that's a shame
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2014-02-12T14:52:34 < dongs> its probably not impossible. i could bring it up with the devs to see its feasibility
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2014-02-12T14:56:25 < zyp> maybe I should consider getting the one with the 72M buffer instead then
2014-02-12T14:57:08 < Laurenceb> http://www.st.com/web/en/press/c2746
2014-02-12T14:57:11 < Laurenceb> uh oh
2014-02-12T14:58:09 < dongs> lolwut
2014-02-12T14:58:50 < dongs> zyp, awesome, shit just works
2014-02-12T14:59:02 < dongs>     register uint32_t basepri __asm("basepri");
2014-02-12T14:59:02 < dongs>     basepri = 0;
2014-02-12T14:59:07 < dongs> and it properly got inlined everwhere
2014-02-12T14:59:20 < zyp> neat
2014-02-12T14:59:30 < dongs> 00021e  2080              MOVS     r0,#0x80
2014-02-12T14:59:30 < dongs> 000220  f3808811          MSR      BASEPRI,r0
2014-02-12T14:59:37 < dongs> lemme see if there's example of it using not r0
2014-02-12T14:59:41 < dongs> probly not cuz these funcs are really tiny
2014-02-12T14:59:45 < dongs> and no args to most of htem
2014-02-12T14:59:59 < dongs> ya the onyl 3 times its got inlined it only uses r0
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2014-02-12T15:00:56 < zyp> when the compiler is smart enough to emit msr, it's probably also smart enough to pick the sanest choice of temporary register
2014-02-12T15:01:04 < dongs> yar
2014-02-12T15:02:40 < dongs> im trying to figure out how to #ifdef this shit for armcc..
2014-02-12T15:02:42 < dongs> fuck
2014-02-12T15:02:48 < dongs> does gcc not have multi-line __asm() ??
2014-02-12T15:03:19 < dongs> armcc I can do void __asm nigger(void) {
2014-02-12T15:03:25 < dongs> and anything after that is just raw asm
2014-02-12T15:04:12 < zyp> do you have something like set_basepri?
2014-02-12T15:04:21 < dongs> where?
2014-02-12T15:04:47 < zyp> this function that you're inlining
2014-02-12T15:04:53 < dongs> oh, no this is unrelated
2014-02-12T15:04:58 < dongs> other piece of code
2014-02-12T15:04:59 < dongs> basepri stuff worsk
2014-02-12T15:05:26 < zyp> what do you need in gcc then?
2014-02-12T15:05:53 < dongs> this shit has to be kinda portable
2014-02-12T15:06:04 < dongs> like my pendsv handler is just all asm
2014-02-12T15:06:17 < dongs> but in gcc it'd have to be aids of "foo R0, R1\n"
2014-02-12T15:06:23 < dongs> where in armcc I can just keep typing it
2014-02-12T15:06:45 < zyp> in gcc you'd do something like this: void set_basepri(uint32_t value) { asm("msr basepri,%0" :: "r" (value)); }
2014-02-12T15:06:48 < zyp> ah, ok
2014-02-12T15:06:58 < dongs> yes, i know how to do it for one-liners
2014-02-12T15:07:14 < dongs> but a whoel function in gcc __asm() needs this "quoting" shit
2014-02-12T15:07:33 < zyp> you can use \n to insert newlines between multiple instructions
2014-02-12T15:07:51 < dongs> point is, I cannot *reuse* same asm CODE between armcc and gcc
2014-02-12T15:07:54 < dongs> even if its mostly same
2014-02-12T15:07:58 < dongs> because in gcc I have to quote each
2014-02-12T15:07:59 < dongs> and add \n
2014-02-12T15:08:36 < dongs> where in armcc its just __asm void foo(void) { movs/ldr/beq/blabla/bx lr } done where / is just enter.
2014-02-12T15:08:55 < zyp> that's the problem with inline asm, it's not standardized in the C spec, so there's not one way to do it
2014-02-12T15:09:02 < dongs> yep.
2014-02-12T15:10:23 < zyp> you could probably do some ugly macro magic to dick around with it, but that sounds more of a hassle than just having two blocks of the same code with ifdefs
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2014-02-12T15:19:55 < dongs> hey, it doesnt work :)
2014-02-12T15:19:57 < dongs> what a surprise
2014-02-12T15:21:00 < dongs> oh, hardfault
2014-02-12T15:23:24 < dongs> cute
2014-02-12T15:23:26 < dongs> calloc failed
2014-02-12T15:25:37 < dongs> shit, it works
2014-02-12T15:27:08 < dongs> rtosin' like a pro
2014-02-12T15:30:48 < dongs> hm
2014-02-12T15:30:54 < dongs> psp init
2014-02-12T15:31:04 < dongs> su r0, #28, msr psp, r0, bx lr
2014-02-12T15:31:16 < dongs> isnt there some intrinsic for this shit
2014-02-12T15:31:31 < dongs> su=sub
2014-02-12T15:34:38 < dongs> pft whatever
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2014-02-12T16:05:15 < dongs> http://www.st.com/web/en/resource/technical/document/application_note/DM00046011.pdf
2014-02-12T16:05:19 < dongs> retweeting
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2014-02-12T17:08:16 < Thorn> is 429i-disco 4 layers?
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2014-02-12T17:12:18 < Steffanx> you can download the gerbers not?
2014-02-12T17:13:07 < madist> not
2014-02-12T17:13:14 < Steffanx> no, not not :P
2014-02-12T17:13:22 < Steffanx> http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/stm32f429i-disco_gerber.zip
2014-02-12T17:13:30 < madist> oh :p
2014-02-12T17:14:28 < Steffanx> L1-L4.. i guess that's 4 layers?
2014-02-12T17:20:02 < Laurenceb> "Because this clock was originally built in 2008, the electronics are a bit… strange through the lens of a post-Arduino skill set."
2014-02-12T17:20:06 < Laurenceb> lol post arduino
2014-02-12T17:20:11 < dongs> lawl
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2014-02-12T17:20:17 < dongs> "skill set"
2014-02-12T17:20:18 < dongs> hilarious.
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2014-02-12T17:20:43 < Steffanx> linky Laurenceb?
2014-02-12T17:20:51 < Laurenceb> http://hackaday.com/
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2014-02-12T17:26:51 < Thorn> wtf is going on on layer 3
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2014-02-12T17:28:08 < Steffanx> What do you use to view those gerbers? My tools cannot show anything useful.
2014-02-12T17:29:00 < Steffanx> jpa-, what kind of receiver you use for your oven temperature measure tool?
2014-02-12T17:29:27 < Thorn> gerbv (which is horribly slow)
2014-02-12T17:29:28 < Steffanx> and how low power is it? Or how you "made" it low power.
2014-02-12T17:32:39 < Thorn> http://i.imgur.com/RnRX1pG.png L3
2014-02-12T17:32:50 < dongs> just looks like a typical power layer
2014-02-12T17:33:01 < dongs> that center island is 3.3V or whatever
2014-02-12T17:33:31 < dongs> hmm.. or maybe split ground? weird
2014-02-12T17:33:42 < dongs> hm or no, depends what that connector on top is
2014-02-12T17:34:10 < Thorn> all the through holes crossing the gap
2014-02-12T17:35:08 < Thorn> connector on top is JP3
2014-02-12T17:35:20 < Thorn> so it's probably 3V vs. Vdd
2014-02-12T17:35:50 < Thorn> they have 2 power rails with the same voltage, connected with a jumper
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2014-02-12T17:41:28 < Steffanx> idd measurement it is..
2014-02-12T17:42:42 < Thorn> must have been a nightmare to route with a larger annular ring size
2014-02-12T17:43:47 < Thorn> what is it, 0.6mm?
2014-02-12T17:44:02 < Thorn> gerbv says aperture size is 0.006
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2014-02-12T17:55:08 < Thorn> a lot of traces ol L4 including SDRAM and display cross that gap.
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2014-02-12T18:03:21 < jpa-> Steffanx: qam-rx2
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2014-02-12T18:08:05 < Thorn> one of fiducials is connected to a signal lol
2014-02-12T18:09:32 < Steffanx> but.. 3-5mA isn't really low power imho jpa-
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2014-02-12T18:10:46 < jpa-> Steffanx: it can turn it off between packets
2014-02-12T18:12:15 < Steffanx> turn off as in.. you have a switch in the power line?
2014-02-12T18:12:20 < jpa-> yes
2014-02-12T18:12:23 < Steffanx> Ah.
2014-02-12T18:12:28 < Steffanx> explains it all :)
2014-02-12T18:13:24 < jpa-> (actually have a SMPS there and use its enable line to control the power.. the rf receiver wants 5V and the battery gives 3.7V)
2014-02-12T18:14:26 < Steffanx> You just synchronize the sender and receiver or.. ?
2014-02-12T18:15:09 < Steffanx> maybe i should take a look at your code again
2014-02-12T18:15:22 < jpa-> https://svn.kapsi.fi/jpa/uunimittari/receiver_sw/src/sensor_task.c
2014-02-12T18:15:38 < jpa-> it's quite dumb, it just waits for packet and then sleeps 20 seconds
2014-02-12T18:16:25 < jpa-> because the transmitter runs without crystal, the interval can vary 20-60 seconds depending on temperature.. if i wanted to have it very low power, should take the interval between two packets and wait based on that
2014-02-12T18:17:07 < Steffanx> At least it works :)
2014-02-12T18:17:11 < Steffanx> Thanks for the info :)
2014-02-12T18:17:53 < jpa-> yeah; it wouldn't save that much power that it would really matter
2014-02-12T18:18:34 < jpa-> worst power drain is actually the stupid 3.3V regulator that takes 70µA always.. so the battery will drain in a year even if it is off :F
2014-02-12T18:21:51 < Steffanx> Just went for cheap and easy?
2014-02-12T18:22:29 < jpa-> nah, wasn't thinking
2014-02-12T18:23:18 < jpa-> could have switched it later but didn't bother to order parts
2014-02-12T18:24:02 < dongs> blah
2014-02-12T18:24:07 < dongs> zyp, you were right
2014-02-12T18:24:09 < Steffanx> hope my TI ones will do better than 70uA
2014-02-12T18:24:12 < dongs> cmsis already hasbasepri shit
2014-02-12T18:24:19 < Steffanx> ( they should )
2014-02-12T18:24:19  * Steffanx => food
2014-02-12T18:24:20 < jpa-> Steffanx: well datasheet will tell :)
2014-02-12T18:24:22 < dongs> __set_BASEPRI and __get_BASEPRI intrinsics
2014-02-12T18:24:37 < Steffanx> yeah, but datasheet vs reality jpa- :P
2014-02-12T18:24:55 < jpa-> well usually simple parts like that work correctly :P
2014-02-12T18:25:09 < zyp> dongs, realizing that after you've made your own is always helpful
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2014-02-12T18:26:57 < PaulFertser> dongs: btw, what do you use for version control?
2014-02-12T18:27:20 < jpa-> visual sourcesafe
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2014-02-12T18:28:00 < dongs> ^
2014-02-12T18:30:14 < fbs> lol
2014-02-12T18:30:17 < Thorn> ntfs streams
2014-02-12T18:33:11 < PaulFertser> dongs: I wonder if you really digged any of the DVCSs? I know some proprietary professional solutions exist.
2014-02-12T18:34:06 < dongs> PaulFertser: i was forced to use git and i fucking hate it.
2014-02-12T18:35:23 < PaulFertser> dongs: what about decent professional solutions?
2014-02-12T18:35:44 < karlp> cp awes0me.c lessawes0me.c.1
2014-02-12T18:35:51 < dongs> um trying to remember waht the other dicks here use
2014-02-12T18:35:54 < dongs> its something um..
2014-02-12T18:35:56 < dongs> prosomething
2014-02-12T18:36:00 < dongs> perforce>? yeah that
2014-02-12T18:36:13 < karlp> man haven't used perforce in years
2014-02-12T18:37:12 < dongs> heh
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2014-02-12T18:38:30 < zyp> I tried using ClearCase, but I didn't really get it
2014-02-12T18:38:57 < zyp> seemed to be an overall horrible system
2014-02-12T18:39:08 < dongs> git is probably worst
2014-02-12T18:39:28 < fbs> nah
2014-02-12T18:41:32 < madist> perforce is nice. you can check in binaries into it.
2014-02-12T18:42:23 < fbs> are there any that dont allow binaries?
2014-02-12T18:43:29 < dongs> madist: yeah. the dude here was raging few w eeks ago
2014-02-12T18:43:33 < dongs> some fuckhead checked in win7 iso
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2014-02-12T18:43:44 < fbs> loooool
2014-02-12T18:44:13 < dongs> SO AWESOME
2014-02-12T18:45:31 < talsit> perforce handled binaries very well
2014-02-12T18:45:35 < talsit> no matter how large
2014-02-12T18:46:18 < talsit> anyway, late
2014-02-12T18:46:24 < dongs> WAY LATE
2014-02-12T18:46:43 < talsit> too late
2014-02-12T18:47:42 < madist> http://www.youtube.com/watch?v=N79Tz5fwOrE
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2014-02-12T19:07:16 < dongs> wat is this trash
2014-02-12T19:07:56 < madist> ITS NEVER TOO LATE
2014-02-12T19:08:02 < madist> WE STILL GOT TIME
2014-02-12T19:08:24 < Steffanx> AND TERRIBLE MUSIC.
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2014-02-12T22:19:28 < amstan> wtf, i just discovered that the usart module can do spi too?
2014-02-12T22:19:31 < amstan> what's the point in that
2014-02-12T22:19:39 < amstan> there's an spi module as well
2014-02-12T22:19:47 < amstan> this is about the stm32f405
2014-02-12T22:21:23 < Tectu_> amstan, every pin provides more than just one alternate function
2014-02-12T22:22:45 < amstan> Tectu_: i don't mean that
2014-02-12T22:23:00 < amstan> it seems that the usart module, can be configured to go synchronous mode and do spi
2014-02-12T22:23:27 < amstan> without using the spi peripheral, from what i understand
2014-02-12T22:24:24 < BrainDamage> because syncronous serial and spi are nearly the same thing
2014-02-12T22:24:48 < BrainDamage> so for few trans more you gain a free spi transponder if necessary
2014-02-12T22:24:51 < amstan> yeah, it's so weird
2014-02-12T22:24:55 < BrainDamage> why weird
2014-02-12T22:25:01 < BrainDamage> you can have more than 1 bus
2014-02-12T22:25:04 < amstan> i know
2014-02-12T22:25:13 < amstan> but there's already like 4 spis in this chip
2014-02-12T22:25:21 < amstan> the 4 usarts give another 4, lol
2014-02-12T22:31:31 < bvernoux> amstan: yes stm32f4 is very nice
2014-02-12T22:31:59 < bvernoux> amstan: even software peripheral can be easily done with the horsepower behind
2014-02-12T22:32:11 < bvernoux> sw peripheral = bitbanging
2014-02-12T22:32:26 < amstan> bvernoux: yeah, of course
2014-02-12T22:32:45 < bvernoux> and the must is stm32f4 are very cold
2014-02-12T22:32:58 < bvernoux> even with everything on and infinite loop
2014-02-12T22:33:03 < bvernoux> and at 168Mhz
2014-02-12T22:33:58 < bvernoux> I hope i will release soon my secret open source hw + sw ;)
2014-02-12T22:34:05 < bvernoux> based on the amazing stm32f405rgt
2014-02-12T22:35:24 < bvernoux> it is just a must for all modern fast serial protocol or even parallel port (even if it is limited to 8 or 16bits)
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2014-02-12T23:03:54 < amstan> i need 4 variable frequency pins(duty cycle is not important)
2014-02-12T23:04:02 < amstan> i can't use 1 timer for all 4 can I?
2014-02-12T23:04:22 < amstan> they're supposed to do their thing at the same time
2014-02-12T23:04:48 < gnomad> amstan: depends oh how you do it
2014-02-12T23:05:17 < amstan> ideally all in hardware, it's for stepper motors and i don't really want to bother the cpu to do all that
2014-02-12T23:05:24 < gnomad> you can't do it in hardware, but you can in software
2014-02-12T23:05:33 < amstan> i can do it in hardware with 4 timers
2014-02-12T23:05:36 < amstan> for sure
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2014-02-12T23:05:42 < amstan> but the question is can i do it using 1 timer
2014-02-12T23:06:07 < Thorn> 1 timer = 1 frequency
2014-02-12T23:06:16 < bvernoux> amstan: use PWM integrated in STM32
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2014-02-12T23:06:30 < amstan> Thorn: yeah, i was affraid of that
2014-02-12T23:06:47 < amstan> bvernoux: hmm?
2014-02-12T23:07:04 < bvernoux> there is hw PWM especially for that
2014-02-12T23:07:11 < bvernoux> on STM32F
2014-02-12T23:08:09 < amstan> bvernoux: for multiple frequencies?
2014-02-12T23:08:58 < bvernoux> independent freq
2014-02-12T23:09:00 < bvernoux> ?
2014-02-12T23:09:34 < amstan> yes
2014-02-12T23:10:33 < amstan> the only place that i see is this section in PF6-9 where there's 4 timers for each pin, however PF3-10 is also a nice region for ADC(which i already wanted to use for something else)
2014-02-12T23:11:41 < bvernoux> else you can add a cheap independant PWM chipset managed through SPI/I2C if you need more HW PWM
2014-02-12T23:12:14 < Thorn> there're up to 17 or so timers in stm32
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2014-02-12T23:12:29 < bvernoux> yes lot of timer can be used as PWM
2014-02-12T23:12:33 < Thorn> stm32f1 have up to10 or something
2014-02-12T23:12:58 < bvernoux> Thorn: it is in case the pins on those Timer are already dedicated to other stuff
2014-02-12T23:13:15 < Thorn> lqfp144/172/208/bga
2014-02-12T23:13:20 < GargantuaSauce_> use the timer's interrupt and trigger another gpio
2014-02-12T23:14:15 < bvernoux> GargantuaSauce_: you will have jitter and not very accurate result
2014-02-12T23:14:24 < Thorn> or use a cpld
2014-02-12T23:14:38 < bvernoux> yes a little cpld is nice for that
2014-02-12T23:14:48 < bvernoux> it does not requires lot of cells
2014-02-12T23:14:51 < BrainDamage> or throw more stm32 at it
2014-02-12T23:15:17 < bvernoux> an easier way is maybe dedicated pwm chipset with SPI ;)
2014-02-12T23:15:36 < GargantuaSauce_> well what's the application? if it's just triggering stepper drivers or something it doesn't need to be super accurate
2014-02-12T23:15:55 < amstan> GargantuaSauce_: it's a pretty complex robot
2014-02-12T23:16:17 < BrainDamage> it collects data about env, discard it, and drive up walls?
2014-02-12T23:16:31 < GargantuaSauce_> the jitter will be on the order of a microsecond
2014-02-12T23:16:41 < amstan> i'm already using the L6470 driver, it can count steps on its own, but i wired up the STCK line as well in case i wanna do steps directly from the mcu
2014-02-12T23:17:05 < BrainDamage> maybe he has to juggle with balls at the speed of sound
2014-02-12T23:17:47 < BrainDamage> for motor control, unless you need highres at crazy speeds, us jitter shouldn't be an issue
2014-02-12T23:17:56 < Thorn> whose balls
2014-02-12T23:18:03 < Steffanx> beaky's
2014-02-12T23:18:14 < Thorn> not a problem then
2014-02-12T23:19:19 < bvernoux> BrainDamage: for brushless management it requires accuracy ?
2014-02-12T23:19:35 < bvernoux> i'm interested to test brushless for fun as it seems very fun
2014-02-12T23:20:00 < BrainDamage> well, what center freq and what duty cycle range and resolution do you have?
2014-02-12T23:21:25 < emeb> bvernoux: question about airspy - what RF front-end are you using?
2014-02-12T23:21:43 < bvernoux> emeb: r820t
2014-02-12T23:22:02 < bvernoux> emeb: we have a new hi-res photo on website
2014-02-12T23:22:05 < emeb> bvernoux: cool. were you able to buy those in qty?
2014-02-12T23:22:22 < bvernoux> emeb: directly at rafael micro
2014-02-12T23:22:39 < karlp> that's the same thing as on a lot of the rtl sdr dongles right?
2014-02-12T23:22:40 < bvernoux> emeb: digikey, mouser or other does not sell it
2014-02-12T23:22:40 < emeb> bvernoux: nice - I've heard that they are fairly easy to talk to.
2014-02-12T23:23:14 < bvernoux> emeb: yes they are not asking 1millions unit ;)
2014-02-12T23:23:35 < emeb> karlp: yes - same chip
2014-02-12T23:23:55 < emeb> now that elonics is gone it's about the only viable front-end for broadband tuning.
2014-02-12T23:23:56 < bvernoux> yes the same used on lot of rtlsdr
2014-02-12T23:24:39 < bvernoux> and the surprise is it work fine at 12bits
2014-02-12T23:24:49 < bvernoux> it was a surprise as it could have been horrible
2014-02-12T23:25:06 < bvernoux> as no any rtlsdr have more than 7/8bits
2014-02-12T23:25:38 < BrainDamage> no tx :/
2014-02-12T23:25:42 < emeb> must have more dynamic range than those parts need
2014-02-12T23:26:15 < emeb> ISTR that the full datasheet for the r820 was floating around a while back
2014-02-12T23:26:32 < bvernoux> BrainDamage: yes no TX
2014-02-12T23:26:46 < bvernoux> BrainDamage: anyway there is room for extension
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2014-02-12T23:29:46 < BrainDamage> well
2014-02-12T23:29:46 < BrainDamage> there's little less shared functionality between tx and rx
2014-02-12T23:29:46 < BrainDamage> just the oscillator, and at most the usb frontend
2014-02-12T23:29:47 < BrainDamage> so there's as much room for extension as much anything else
2014-02-12T23:29:48 < BrainDamage> might as well do a completely sep device
2014-02-12T23:29:50 < BrainDamage> what I'd be more interested, was like a local rtc for flagging packets timestamp
2014-02-12T23:29:52 < BrainDamage> so you could actualy use multiple dongles phase synced
2014-02-12T23:29:55 < BrainDamage> then there's lot of fun things possible
2014-02-12T23:30:02 < BrainDamage> synthetic aperture antennaes, etc
2014-02-12T23:30:24 < bvernoux> yes ;)
2014-02-12T23:30:29 < bvernoux> it's in top list
2014-02-12T23:31:01 < bvernoux> this protoype in photo is just basic version
2014-02-12T23:31:15 < bvernoux> and does not reflect the final design
2014-02-12T23:31:42 < bvernoux> except maybe for the size to be ultra small like this one
2014-02-12T23:32:33 < bvernoux> BrainDamage: any idea are welcome to enhance the commercial version
2014-02-12T23:32:52 < bvernoux> BrainDamage: we are very open to add features requireds by lot of users/hackers ...
2014-02-12T23:36:18 < BrainDamage> well, having builtin support for timestamped frames would be #1 thing for me
2014-02-12T23:36:54 < emeb> wonder how hard it would be to do that in SW - use the cycle counter or something.
2014-02-12T23:37:21 < BrainDamage> you need to be able to compensate for many things
2014-02-12T23:37:28 < emeb> reading the LPC datasheet it looks like there's a level-trigger capability on the ADC
2014-02-12T23:37:32 < BrainDamage> for one, each dongle's LO would have it's own phase
2014-02-12T23:37:54 < BrainDamage> unless you somehow can inject a sync signal in the pll
2014-02-12T23:38:05 < emeb> there is a clock input option so you could theoretically drive them all from a common reference
2014-02-12T23:38:26 < BrainDamage> then I guess based off the buffer consumption rate
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2014-02-12T23:38:46 < BrainDamage> you could reconstruct the frame relative position
2014-02-12T23:39:50 -!- kuldeepdhaka [~kuldeepdh@unaffiliated/kuldeepdhaka] has quit [Ping timeout: 250 seconds]
2014-02-12T23:40:07 < bvernoux> ultra accurate timestamp is planned
2014-02-12T23:40:11 < bvernoux> it is a must have
2014-02-12T23:41:01 < BrainDamage> a good characterization of the device would be supercool
2014-02-12T23:41:08 < BrainDamage> I don't say necessarily calibrated
2014-02-12T23:41:36 < BrainDamage> but some general global characterization so one could do qualitative measurements of abs power could be nice
2014-02-12T23:42:43 < bvernoux> BrainDamage: you could post those idea on airspy forum
2014-02-12T23:43:30 < bvernoux> we will try to add as more feature as possible but with a max price of 149USD
2014-02-12T23:44:04 < BrainDamage> well, that one comes at no hw cost really
2014-02-12T23:44:27 < bvernoux> even if we would work hard to have something like 99USD it just depends on number of boards to build and lot of factor
2014-02-12T23:44:37 < BrainDamage> it just takes taking a bunch of dongles, firing up sweeping generator, log the result, and average
2014-02-12T23:44:58 < BrainDamage> it'd be like a fixed cost 1 time
2014-02-12T23:45:25 < BrainDamage> it'd be a general characterizationfor the bulk of the devices, showing how much error they have etc
2014-02-12T23:45:57 < BrainDamage> rather than per-device calibration ( which would be cool, but rather expensive  )
2014-02-12T23:46:56 < karlp> hrmm, compiling this library with --specs=nano.specs makes arm-none-eabi-size report it ~3 times as big as without,
2014-02-12T23:47:14 < karlp> but when it's linked into the final app, it has zero impact whether the library was compiled with nano or not.
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2014-02-13T00:07:08 -!- Cyric [Cyric@cm-84.211.79.184.getinternet.no] has quit []
2014-02-13T00:09:06 < zyp> heh
2014-02-13T00:09:29 < zyp> which library?
2014-02-13T00:10:01 < zyp> isn't --specs=nano.specs only for the linker, you aren't linking the library?
2014-02-13T00:18:38 < amstan> gosh.. picking peripherals was a lot more complicated than other chips i worked with
2014-02-13T00:21:25 < karlp> zyp: I guess, but you "link" when you link the .a into the .so
2014-02-13T00:21:32 < karlp> I guess that's not the sort of linking that matters...
2014-02-13T00:21:55 < karlp> I'm probably just using the .a anyway if I looked more closely :)
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2014-02-13T00:24:07 < zyp> huh?
2014-02-13T00:24:21 < zyp> an .a is just an archive of object files, no linking there
2014-02-13T00:24:56 < zyp> and I don't see how .so is relevant at all, I guess you're not dynamic linking on cortex-m :)
2014-02-13T00:26:19 -!- alan5 [~quassel@46.165.210.1] has quit [Ping timeout: 260 seconds]
2014-02-13T00:27:58 < karlp> Well, I just changed the compiler on an existing library, it builds the .so,
2014-02-13T00:28:05 < karlp> and that's what I was running -size on,
2014-02-13T00:28:25 < karlp> but yeah, I guess my build (just -llibname) probably uses the .a
2014-02-13T00:29:00 < gxti> what's the intent of using .so for this?
2014-02-13T00:31:07 < gxti> if it's even possible... still seems like .a would be wiser
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2014-02-13T00:34:39 < karlp> there is no intent, it's justthat the existing makefile for this lib created a .a and a .so, and I was (like a fool) even bothering to look at the .so
2014-02-13T00:35:40 < gxti> .so is only useful for targets with a dynamic loader, i.e. general purpose OSes
2014-02-13T00:35:53 < gxti> it might be possible to force them to be statically linked in but you may as well just use the .a instead
2014-02-13T00:36:04 < karlp> so, calling -size on the .a gives mteh size of each .o inside, and the sum of those is smaller than the "size" of the .so
2014-02-13T00:36:25 < karlp> so yeah, it's irrelevant what my number for the .so was earlier, don't read anymore into it
2014-02-13T00:37:20 < gxti> it's still curious. maybe it statically linked newlib into the code there, and so you ended up with multiple copies.
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2014-02-13T00:39:41 < karlp> have a play with it if you really really wannt :) https://github.com/karlp/scpi-parser/tree/master/libscpi
2014-02-13T00:39:52 < karlp> (not mine, I  just hacked the makefiles a littlebit)
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2014-02-13T00:40:37 < gxti> either way the library should not have any libc crap in it
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2014-02-13T00:40:49 < gxti> because only the final link should drag it in
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2014-02-13T01:53:02 < karlp> fucking makefiles
2014-02-13T01:53:07 < karlp> maybe the time has come
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2014-02-13T02:01:29 < emeb> to NUKE THE WORLD!!!1!11!
2014-02-13T02:01:33 < emeb> ?
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2014-02-13T02:09:28 < ds2> here comes mighty SCONS to save the day!
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2014-02-13T02:39:02 < dongs> lel
2014-02-13T02:39:05 < dongs> or just use a proper ide
2014-02-13T02:40:25 < GargantuaSauce_> cmake is where it's at
2014-02-13T02:40:52 < dongs> isnt cmake by that nutcase joerg schilling
2014-02-13T02:41:12 < dongs> hm no
2014-02-13T02:41:44 < dongs> anywho, if gnu make sucks, any competition can only be worse
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2014-02-13T02:43:09 < dongs> https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-frc1/t1/1888619_10152043031839584_1134135604_n.jpg
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2014-02-13T03:00:22 < emeb> bad parenting
2014-02-13T03:02:16 < BrainDamage> tell your kids the dangers of UNIX before they met it
2014-02-13T03:02:35 < BrainDamage> linux is a gateway os
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2014-02-13T03:12:51 < gnomad> As someone who has been using Unix since before Windows 1.0, Windows has been far, far worse.
2014-02-13T03:13:05 < gnomad> the first version that was ever remotely usable was XP after SP2.
2014-02-13T03:13:29 < gnomad> and only barely.
2014-02-13T03:19:17 < GargantuaSauce_> 98se 4 lyfe
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2014-02-13T03:24:23 < dongs> so by that logic, windows 8.1 is absolutely amazing
2014-02-13T03:24:29 < dongs> while lunix can barely reach functionality of win98se
2014-02-13T03:24:42 < dongs> (actually, win98 before se, since SE added kernel audio mixer)
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2014-02-13T03:25:12 < gnomad> yeah, having to reboot multiple times every day is a wonderful thing.
2014-02-13T03:25:16 < GargantuaSauce_> are you trying to bring FACTS into this discussion?
2014-02-13T03:25:32 < GargantuaSauce_> (with incorrect implications at that)
2014-02-13T03:25:45 < dongs> gnomad: my dekstop is rebooted like once every few weeks
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2014-02-13T03:26:17 < gnomad> my unix machines have had uptimes on the orders of years.... and that was a decade ago.
2014-02-13T03:26:23 < dongs> \\dtvcap has been up for: 1545 day(s), 19 hour(s), 48 minute(s), 14 second(s)
2014-02-13T03:26:26 < dongs> here's my windows XP machine.
2014-02-13T03:26:28 < dongs> questions?
2014-02-13T03:27:28 < gnomad> so no security updates in that time, huh?
2014-02-13T03:28:19 < englishman> hasn't recompiled kernel either
2014-02-13T03:28:21 < gnomad> IMO, the people who don't like Unix are the ones who have never taken the time to learn it
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2014-02-13T03:29:06 < gnomad> I've used with just about every version of Windows, and I can say without a doubt that I'd rather slam my dick in a door than use any of them.
2014-02-13T03:29:15 < dongs> sorry to hear that
2014-02-13T03:29:20 < dongs> your dick must enjoy getting slammed.
2014-02-13T03:29:26 < dongs> because 99% of hte world population doesnt agree with ytou
2014-02-13T03:29:47 < gnomad> 99% of the population has never bothered to take the time to learn unix.
2014-02-13T03:30:03 < GargantuaSauce_> can we go back to pretending to compare dicks instead of actually doing it pls
2014-02-13T03:30:03 < dongs> why the fuck would they need to
2014-02-13T03:30:24 < dongs> it provides them absolutely ZERO improvement over current working OS that everyone else uses
2014-02-13T03:30:27 < gnomad> Microsoft has set the world of computing back a good 20 years.
2014-02-13T03:31:11 < dongs> keep thinking that
2014-02-13T03:31:13 < gnomad> Vista. you *seriously* want to defent that shit?
2014-02-13T03:31:18 < dongs> lunix is what's been 'setting itself back' for 20 years
2014-02-13T03:32:17 < BrainDamage> everytime I read someone bragging about their year sized uptime
2014-02-13T03:32:31 < BrainDamage> I think about all the unpatched kernel bugs they have
2014-02-13T03:32:45 < dongs> which really matter on a  machine sitting on a lan
2014-02-13T03:32:49 < dongs> plzzz
2014-02-13T03:43:29 < GargantuaSauce_> i am of the opinion that all software is terrible and it's just a question of picking your poison
2014-02-13T03:43:38 < GargantuaSauce_> i use linux because it lets me dick with it when it breaks
2014-02-13T03:45:08 < BrainDamage> yes, but everyone has his fun complaining
2014-02-13T03:45:16 < BrainDamage> about both it's preferred, and it's hated
2014-02-13T03:45:33 < gnomad> you know, I don't give a goddamn fuck about what you want to use.
2014-02-13T03:45:37 < GargantuaSauce_> of course
2014-02-13T03:45:45 < gnomad> it is all the goddamn bitching about what other people use that pisses me off
2014-02-13T03:47:00 < gnomad> I fucking hate windows, so the only time I run it is when I am forced to use an app that only runs under windows.
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2014-02-13T03:47:26 < gnomad> thank goodness that doesn't happen all that much any more.
2014-02-13T03:48:05 < BrainDamage> I make fun of all of them
2014-02-13T03:48:11 < BrainDamage> including the one I use :p
2014-02-13T03:49:20 < gnomad> yeah, you can pick nits with everything.
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2014-02-13T04:13:32 < dongs> ok lets start some trolling
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2014-02-13T07:30:47 < emeb_mac> quiet night
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2014-02-13T07:41:28 < dongs> eah
2014-02-13T07:41:32 < dongs> foxconning wihtout a pause
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2014-02-13T08:09:57 < emeb_mac> dongsbot
2014-02-13T08:13:38 < dongs> i asked wifecop t o go through a tray of chips to check if they all had balls
2014-02-13T08:13:45 < dongs> by the time the bitch got unlazy i was almost done myself
2014-02-13T08:13:50 < dongs> lazy fucking women
2014-02-13T08:19:41 < emeb_mac> never send a non-engineer to do an engineer's job
2014-02-13T08:28:52 < englishman> ^ only reason engineers still have jobs
2014-02-13T08:38:03 < emeb_mac> is that they get their family members to work for free?
2014-02-13T08:38:30 < emeb_mac> soon, dongskids will be working in the silicon mines...
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2014-02-13T12:36:36 < Thorn> who said winusb was easy to use https://code.google.com/p/libusb-winusb-wip/source/browse/trunk/libusb/os/windows_usb.c
2014-02-13T12:36:45 < Thorn> I think it was dongs
2014-02-13T12:46:22 < RaYmAn> It requires a ton of code, but it's in no way hard - the docs are actually fairly good. :)
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2014-02-13T13:56:29 < dongs> sup twitterers
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2014-02-13T13:58:07 < dongs> still foxconning
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2014-02-13T14:44:17 < Steffanx> alan5 didn't give up on TI and the CC3000 yet?
2014-02-13T14:44:31 < Steffanx> This is one of the reasons i gave up on it: http://e2e.ti.com/support/low_power_rf/f/851/t/318642.aspx
2014-02-13T14:44:46 < Steffanx> each topic get a reply from some TI guy, except that one :P
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2014-02-13T16:10:03 < zyp> hmm
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2014-02-13T16:11:10 < zyp> so people have an external RTC chip, hooked up to 3.3V and a 0.25F supercap through a BAT54C
2014-02-13T16:11:38 < zyp> and the supercap empties in a second or so, and I don't know where the fuck the current is going
2014-02-13T16:12:47 < zyp> the RTC should draw around 300 nA and the BAT54C should have less than a uA leakage
2014-02-13T16:14:21 < Laurenceb> desolder pins, put kapton tape under them
2014-02-13T16:14:33 < Laurenceb> then connect enamled wire to multimeter
2014-02-13T16:16:15 < zyp> well, the RTC chip only has open-drain outputs (i2c and interrupt), so there's no possibility for it to source the current elsewhere
2014-02-13T16:19:11 < dongs> http://www.popsci.com/article/gadgets/full-color-3-d-printer-sounds-too-good-be-true-it
2014-02-13T16:19:14 < dongs> haha 3d printer trollery
2014-02-13T16:21:39 < Steffanx> i guess you checked if you actually used a bat54c and a good footprint zyp? :)
2014-02-13T16:23:49 < zyp> yes, the package is labeled according to the datasheet, with correct footprint
2014-02-13T16:24:39 < zyp> I tried powering the supercap with 3V with the rest of the system off, and nothing seems to leak into normal 3.3V
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2014-02-13T16:43:58 < Thorn> I've done almost the same thing, had runtime of a few days
2014-02-13T16:49:51 < dongs> zyp does that nrf shit youe dicking with have usb
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2014-02-13T16:59:00 < zyp> no
2014-02-13T16:59:08 < gxti> i'm going to do something similar with f1 vbat so curious what happens
2014-02-13T16:59:12 < zyp> the jlink-ob has a usb serial bridge
2014-02-13T16:59:38 < zyp> I started picking parts off the board, still drains fast
2014-02-13T16:59:50 < zyp> then I picked the supercap off, still drains fast
2014-02-13T17:00:45 < zyp> the problem is that this is consistent across multiple boards, they all drain fast
2014-02-13T17:01:06 < zyp> so I'm pretty confused
2014-02-13T17:01:27 < Thorn> what do you mean "picked the supercap off, still drains fast"
2014-02-13T17:01:35 < zyp> I tried charging it
2014-02-13T17:01:42 < zyp> and then measuring discharge
2014-02-13T17:02:12 < Thorn> onboard? have you tried loading it with just a resistor? maybe the supercap is bad
2014-02-13T17:02:19 < jpa-> zyp: when you power the supercap directly, how much current does it draw?
2014-02-13T17:02:20 < zyp> so I wonder, does supercaps charge like normal caps?
2014-02-13T17:02:32 < zyp> jpa-, pretty much nothing
2014-02-13T17:02:41 < Thorn> normal caps with high ESR afair
2014-02-13T17:03:20 < jpa-> zyp: so 1µA or so?
2014-02-13T17:03:49 < zyp> dunno, too little to make the bench supply display anything else than 0.00A
2014-02-13T17:04:02 < jpa-> no multimeter? :P
2014-02-13T17:04:19 < zyp> too lazy to find one
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2014-02-13T17:04:32 < jpa-> though 10mA drain would still mean 50 seconds to 1V
2014-02-13T17:04:43 < karlp> I seem to recall readong somenoe complaining that supercaps he was using took _agggggess_ to charge
2014-02-13T17:05:00 < jpa-> i did not quite understand what you mean by "then I picked the supercap off, still drains fast
2014-02-13T17:05:14 < zyp> I'm measuring only the supercap now, nothing attached
2014-02-13T17:05:22 < Thorn> does it discharge?
2014-02-13T17:05:26 < zyp> so yes, I might be stupid and not letting it charge enough :p
2014-02-13T17:05:43 < Thorn> my supercaps fully charged in less than a second iirc
2014-02-13T17:05:48 < Thorn> 0.33F or something like that
2014-02-13T17:05:52 < jpa-> ah, so the problem is indeed with only the supercap
2014-02-13T17:05:56 < zyp> I get what looks like a discharge curve on the scope
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2014-02-13T17:06:08 < zyp> 0.25F here
2014-02-13T17:06:15 < jpa-> maybe you have hooked it up backwards
2014-02-13T17:06:21 < zyp> no, checked that
2014-02-13T17:06:50 < zyp> datasheet says «internal resistance: 80 ohm» «initial internal resistance: less than 300 ohm»
2014-02-13T17:07:13 < karlp> http://jeelabs.org/2012/04/22/supercap-discharge/ implies that if they've not been charged for a while, they will discharge quicker than if they've been held charged for a while...
2014-02-13T17:07:21  * karlp cheers for handwavy explanations
2014-02-13T17:07:24 < jpa-> so 30 seconds or so should charge it most of the way
2014-02-13T17:11:14 < zyp> yea
2014-02-13T17:11:22 < zyp> I'll make some more measurements
2014-02-13T17:11:52 < Laurenceb> good point
2014-02-13T17:11:56 < Laurenceb> they have high ESR
2014-02-13T17:14:43 < Laurenceb> http://regmedia.co.uk/2014/02/12/developers_coding_smooth_jazz.png
2014-02-13T17:14:46 < Laurenceb> i lolled
2014-02-13T17:15:21 < BrainDamage> zyp: measure the actual ESR, discharge the cap and set oscope to 1-shot, connect a known R in series then manually connect supply, you'll see a step rise in output v followed by the usual exp charge, the first part is voltage divider between input R and ESR
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2014-02-13T17:27:17 < gxti> does the cap eventually charge up to 100% of VDD despite the diode "drop"?
2014-02-13T17:27:34 < gxti> not related to this problem of course, just curious
2014-02-13T17:28:42 < BrainDamage> diodes work at sub "diode drop" voltages too
2014-02-13T17:28:52 < BrainDamage> they have just smaller and smaller current
2014-02-13T17:29:19 < BrainDamage> ofc there'll be a current for which it's the same it'll equal the leak current of the cap
2014-02-13T17:29:24 < BrainDamage> it'll stop charging then
2014-02-13T17:29:35 < gxti> cool
2014-02-13T17:29:36 < Laurenceb> http://www.b3tards.com/u/97edbdbced67e672867d/kippers.jpg
2014-02-13T17:33:49 < Thorn> what if you connect a 3.6V max RTC with a supercap in parallel to +5V through 2 diodes
2014-02-13T17:34:25 < Thorn> will the RTC voltage eventually rise to over 3.6V?
2014-02-13T17:34:51 < Thorn> or 3 diodes (in series)
2014-02-13T17:34:54 < gxti> yes
2014-02-13T17:35:18 < BrainDamage> depends how much current the RTC uses, but assuming very little: yes
2014-02-13T17:35:25 < BrainDamage> diodes are not 1/0
2014-02-13T17:37:15 < gxti> you would need some type of regulator. a zener with high-ish resistor ought to work well as long as fast charge isn't needed.
2014-02-13T17:37:42 < zyp> ok, figured it out, the supercap was bad
2014-02-13T17:37:59 < zyp> found a box of new ones, they behave like I would expect them to
2014-02-13T17:38:19 < gxti> cool. was going to put one in my thermostat project for rtc backup.
2014-02-13T17:38:42 < zyp> the strange part is the fact that there are multiple bad boards here
2014-02-13T17:39:04 < dongs> soudns liek smeone ordered from wrong china vendor
2014-02-13T17:39:08 < zyp> so I guess they got a batch of bad supercaps, or somehow was destroyed
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2014-02-13T17:39:33 < zyp> then again the box of supercaps I found is probably from the same batch, since it's leftovers from PCBA
2014-02-13T17:39:33 < gxti> it's just a cap right, buy whatever's cheapest. nothing could go wrong.
2014-02-13T17:40:04 < dongs> zyp, does laks not have flags?
2014-02-13T17:40:14 < zyp> what flags?
2014-02-13T17:40:20 < dongs> os flags
2014-02-13T17:40:23 < dongs> like wait flag or so
2014-02-13T17:40:36 < zyp> no, not yet
2014-02-13T17:40:41 < dongs> bummer
2014-02-13T17:40:43 < dongs> i was gonna rip them
2014-02-13T17:40:44 < gxti> oh is it another rtos?
2014-02-13T17:40:57 < zyp> mutex is the only sync primitive I've tried implementing
2014-02-13T17:41:00 < gxti> i guess i have coos mostly not failing at this point
2014-02-13T17:41:07 < gxti> but i'm still curious about alternatives
2014-02-13T17:41:25 < dongs> bill is thinking of releasing a new simpler tasker thingy
2014-02-13T17:41:33 < dongs> but it currently only does threads
2014-02-13T17:42:54 < zyp> I'll need to do flags or something similar to have a way to make threads wait for events
2014-02-13T17:42:59 < dongs> right
2014-02-13T17:43:21 < zyp> since I don't have it yet, I can't really put the new scheduler stuff into use
2014-02-13T17:43:28 < gxti> particularly to be able to wait for more than one flag at once
2014-02-13T17:43:37 < zyp> yeah
2014-02-13T17:43:40 < gxti> so you don't need a thread for every little thing
2014-02-13T17:44:11 < jpa-> work queues are pretty nice
2014-02-13T17:44:25 < zyp> the current threading stuff in laks has no concepts of threads being ready to run or not
2014-02-13T17:44:26 < jpa-> especially if they support delayed execution
2014-02-13T17:45:09 < zyp> I was working on improving that when I was bored on the flights to/from korea last summer, so I added sleep support
2014-02-13T17:45:28 < zyp> but I also need to be able to wake up threads from shit like interrupts
2014-02-13T17:45:29 < BrainDamage> so you skipped sleep to add sleep
2014-02-13T17:45:44 < jpa-> "what did you do on the plane?" "sleep"
2014-02-13T17:45:53 < zyp> I don't sleep well on planes, so I tend to avoid it
2014-02-13T17:46:04 < dongs> bills shit never stops interrupts
2014-02-13T17:46:19 < dongs> has yield( that can wait xx ticks
2014-02-13T17:46:34 < zyp> sounds like same shit as laks
2014-02-13T17:47:22 < dongs> wheres your pendsv in lask
2014-02-13T17:47:43 < jpa-> tick-based crap is boring
2014-02-13T17:47:46 < Thorn> supercaps proudly made by One Hung Dong
2014-02-13T17:47:55 < jpa-> i want something that can wait N instructions
2014-02-13T17:48:14 < jpa-> and not by polling, but with a timer
2014-02-13T17:48:24 < gxti> sounds unnecessary
2014-02-13T17:48:40 < dongs> wtf
2014-02-13T17:48:43 < dongs> zyp, where's your pendsv handler
2014-02-13T17:48:48 < gxti> and i'm the one doing timing stuff
2014-02-13T17:48:52 < zyp> dongs, it's currently using svcall, I've been meaning to rewrite it to use pendsv instead
2014-02-13T17:48:56 < dongs> o
2014-02-13T17:49:21 < dongs> o, i see it now
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2014-02-13T17:49:26 < dongs> no bills shit is more advanced
2014-02-13T17:49:28 < zyp> http://cgit.jvnv.net/laks/tree/interrupt/fault.cpp <- and for some reason I put it in along with the fault handlers, and haven't cared to move it yet
2014-02-13T17:49:53 < zyp> http://cgit.jvnv.net/laks/tree/interrupt/fault.cpp?h=scheduler_improvements <- well, I have this
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2014-02-13T18:08:18 < Thorn> I measured my RTC circuit, 4.88V before diode, 4.44V after (supercap is fully charged, current through diode must be <1mA)
2014-02-13T18:17:50 < Thorn> so there's no current but still a drop of drop 0.44V
2014-02-13T18:18:03 < Thorn> -drop
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2014-02-13T18:33:35 < Steffanx> meh, this saleae protocol analyzer sdk..
2014-02-13T18:33:47 < Steffanx> it has a wonderful python script to build your plugin
2014-02-13T18:34:11 < Steffanx> ( ofcourse one can change that very easily )
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2014-02-13T19:00:06 < karlp> fucking irq preemption isn't working
2014-02-13T19:03:50 < zyp> did you set up the groups correctly?
2014-02-13T19:03:57 < karlp> obviously not :)
2014-02-13T19:04:05 < zyp> try doing that first then
2014-02-13T19:04:07 < zyp> :p
2014-02-13T19:04:14 < karlp> yeah, that's the next step,
2014-02-13T19:04:35 < karlp> just had been working under the assumption that the code trying to do that, you know, actually did that :)
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2014-02-13T19:06:06 < karlp> I was probably getting rx uart overrun errors too, that I was just ignoring
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2014-02-13T20:14:23 < Thorn> what will the capacitor voltage be when charged through 1n4007? +3.3V ---|>|---|  |----- 0
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2014-02-13T20:15:40 < gxti> 12
2014-02-13T20:18:41 < fbs> ~2.6V
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2014-02-13T20:19:45 < Thorn> I measured 3.00V
2014-02-13T20:20:10 < fbs> guess that could work if you wait long enough
2014-02-13T20:20:28 < Thorn> waited ~10 seconds
2014-02-13T20:20:35 < madisc> Thorn: 3.3V AC RMS ?
2014-02-13T20:20:53 < Thorn> 33.VDC
2014-02-13T20:21:00 < Thorn> *3.3VDC
2014-02-13T20:21:04 < madisc> how much current ?
2014-02-13T20:21:15 < fbs> 0
2014-02-13T20:21:19 < madisc> 4007 should drop around 1.1V at 1A
2014-02-13T20:21:35 < fbs> his only load is the dmm
2014-02-13T20:24:45 < Thorn> doesn't seem to want to go above 3.03V
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2014-02-13T20:26:17 < fbs> why would it?
2014-02-13T20:26:26 < fbs> try loading it with 10k
2014-02-13T20:27:12 < BrainDamage> Thorn: it's a bit hard to hand calculate the final voltage because you have to know the parasitic current
2014-02-13T20:27:37 < BrainDamage> the diode is not 1/0, it's I=I0*e^(V/Vth-1)
2014-02-13T20:27:38 < gxti> probably the voltmeter is a noticeable load in this type of thing
2014-02-13T20:27:57 < Thorn> what parasitic current corresponds to 0.3V for 1n4007?
2014-02-13T20:28:10 < Thorn> will try a film cap
2014-02-13T20:28:11 < fbs> leakage of the cap is more important
2014-02-13T20:28:19 < gxti> i wonder if the lower vdrop on bat54 is really an improvement in stored charge, after taking into account leakage
2014-02-13T20:28:20 < BrainDamage> cap leak and mm will matter
2014-02-13T20:28:25 < fbs> anyway what is it for?
2014-02-13T20:28:34 < madisc> anyway, why are you nattering over 0.3V ? that's stupid.
2014-02-13T20:28:34 < BrainDamage> dmm have resistance in the order of 10MOhm typically
2014-02-13T20:28:36 < fbs> a good dmm should be >1G at low voltage
2014-02-13T20:28:39 < gxti> fbs: supercap
2014-02-13T20:28:56 < BrainDamage> fbs: 10MOhm is more realistic, really
2014-02-13T20:29:36 < gxti> madisc: 0.3V times 1 farad is a lot of runtime for a RTC
2014-02-13T20:30:34 < fbs> BrainDamage: hmm
2014-02-13T20:30:57 < BrainDamage> anyway with 10MOhm @ 3V it's 300nA, the cap leak current likely dominates
2014-02-13T20:30:58 < gxti> fluke 87-V has a "hi-z" mode which means normal mode must not be terribly hi-z
2014-02-13T20:31:39 < gxti> BrainDamage: for a brief connection yeah. you wouldn't want to leave it connected for a runtime test though.
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2014-02-13T20:32:45 < BrainDamage> Thorn: in order to know the voltage drop on the diode, you need to reverse the eq I linked and get V=Vthln(I/I0-1)
2014-02-13T20:33:08 < BrainDamage> the problem is that generally I0 is not known
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2014-02-13T20:33:19 < mtbg> zyp: ping
2014-02-13T20:33:36 < Thorn> film cap: also 3.00V
2014-02-13T20:33:36 < BrainDamage> for high currents, the log is approxed constant, because of it's flat asymptote, and you pretend the diode drop is constant
2014-02-13T20:33:45 < fbs> well 3V should be as good as it gets
2014-02-13T20:33:52 < BrainDamage> but for low currents that doesn't work
2014-02-13T20:33:58 < fbs> with a load it should be lower
2014-02-13T20:34:21 < BrainDamage> yep, as you increase the load, the diode's forward drop will get closer to the typical 0.7
2014-02-13T20:34:48 < zyp> hi
2014-02-13T20:35:00 < Thorn> 47uF china electrolyte: 3.03V, 0.47uF PE film: 2.97V
2014-02-13T20:35:27 < fbs> might be able to bypass the diode with a mosfet if you really want to
2014-02-13T20:35:29 < mtbg> zyp: hi, what USB high speed hardware sniffer would you recommend?
2014-02-13T20:35:39 < BrainDamage> don't be nitpicking tough, since the drop on the diode is heavily dependant on T
2014-02-13T20:35:46 < zyp> I only have experience with the Beagle 480
2014-02-13T20:36:03 < zyp> it's nice, but I don't have anything to compare it to
2014-02-13T20:36:14 < BrainDamage> even just your finger's temp should bring noticeable variations in the final voltage
2014-02-13T20:36:45 < mtbg> ok, seems good enough
2014-02-13T20:36:54 < mtbg> and there is Linux software
2014-02-13T20:36:55 < fbs> i assume you dont have a 5V somewher in your circuit Thorn ?
2014-02-13T20:37:21 < gxti> i do
2014-02-13T20:37:38 < gxti> in fact that's what he asked about first.
2014-02-13T20:37:42 < Thorn> it's not a circuit, just playing around
2014-02-13T20:37:45 < BrainDamage> oh and if you use a schottcky diode, you should get voltages even closer to the supply
2014-02-13T20:38:32 < gxti> if there's a clever way to use 5v to get it closer without a whole regulator or something i'd be interested
2014-02-13T20:38:35 < Thorn> the circuit I've been asking about actually depends on the voltage not being too close to supply
2014-02-13T20:38:36 < gxti> otherwise meh
2014-02-13T20:39:08 < alan5> Steffanx -  Not yet. Its part of my uni project and unfortunately Ive commited. I think that host driver wont get updated until they get another intern in.
2014-02-13T20:39:11 < Thorn> and I measured a drop of 0.44V on the diode in that ckt
2014-02-13T20:39:24 < gxti> diode drops seem like a poor choice since if you get lower than anticipated leakage then your voltage will be too high
2014-02-13T20:39:41 < gxti> like if the supercap comes loose suddenly your vbat charges up to 4v and blows something up
2014-02-13T20:40:02 < Thorn> well the zener idea was probably the best
2014-02-13T20:40:54 < fbs> zener gives more leakage tho
2014-02-13T20:41:24 < gxti> you would still have a series diode, so zener wouldn't add leakage
2014-02-13T20:41:30 < gxti> the zener is just to clamp the "source" voltage
2014-02-13T20:41:38 < Thorn> right
2014-02-13T20:41:50 < fbs> oh like that
2014-02-13T20:48:01 < BrainDamage> it'd add leakage
2014-02-13T20:48:05 < BrainDamage> it's just tiny
2014-02-13T20:48:10 < BrainDamage> nA
2014-02-13T20:48:30 < BrainDamage> ie irrelevant
2014-02-13T20:53:20 < Thorn> time to order a uCurrent from Dave lol
2014-02-13T20:54:22 < Thorn> btw in one of his last videos he measured something like 0.1V across a 1n4007
2014-02-13T20:55:20 < BrainDamage> it's perfectly possible at small currents, really
2014-02-13T20:55:25 < BrainDamage> see the log formula above
2014-02-13T20:56:32 < Thorn> apparently the current is much smaller than in my case though
2014-02-13T20:58:20 < Steffanx> alan5: " wont get updated until they get another intern in" they certainly won't hire more indians :P
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2014-02-13T20:59:50 < gxti> blurg ltspice
2014-02-13T21:00:05 < gxti> why is my 1F cap going to zero the instant the poer goes away? because 1F is 1 femtofarad. duh.
2014-02-13T21:01:02 < BrainDamage> wat
2014-02-13T21:01:17 < gxti> it changes u to µ, the least it could do is change M to m and F to f so i don't waste 5 minutes beating my face on the keyboard like that :[
2014-02-13T21:01:17 < BrainDamage> insn't femto lowercase f?
2014-02-13T21:01:45 < gxti> yes, but it interprets F as femto and M as milli
2014-02-13T21:02:26 < gxti> because it is a jerk
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2014-02-13T21:18:20 < mtbg> zyp: and how about that open source USB sniffer on kickstarter? what was its name?
2014-02-13T21:18:51 < zyp> openviszla
2014-02-13T21:19:09 < zyp> never shipped
2014-02-13T21:19:10 < zyp> :p
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2014-02-13T21:20:51 < mtbg> oh well :>
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2014-02-13T22:47:20 < ds2> wonder if minicircuit MRA devices do well with DC
2014-02-13T22:47:57 < ds2> nevermind
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2014-02-13T23:05:38 < fbs> anyone tried writing a tcp/ip stack?
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2014-02-13T23:08:58 < zyp> it's on the list of shit I'm going to try whether there is a point to it or not
2014-02-13T23:12:18 < gxti> no but i did rewrite the threading layer on top of lwip
2014-02-13T23:12:26 < gxti> or at least the bits i'm using
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2014-02-14T00:06:38 < qyx_> fbs: yes, don't try
2014-02-14T00:06:46 < qyx_> then i just started using lwip
2014-02-14T00:06:59 < ds2> regarding the last time I complained about search engines ignoring requests... I found an example:
2014-02-14T00:07:09 < ds2> Using DDG - composite video emitter follower -patent -patents
2014-02-14T00:07:31 < ds2> Yet the 3rd link is a link containing a "patent" WTF
2014-02-14T00:08:59 < qyx_> where
2014-02-14T00:09:06 < qyx_> http://forum.allaboutcircuits.com/showthread.php?t=17047
2014-02-14T00:09:08 < qyx_> this one?
2014-02-14T00:09:52 < ds2> 3rd link:  Patent US5734442 - Module interface system for television ...
2014-02-14T00:10:26 < qyx_> i have no such thing in the results
2014-02-14T00:10:43 < ds2> how do you invoke duckduckgo?
2014-02-14T00:11:03 < ds2> and full or lite version? I am using the lite version
2014-02-14T00:11:07 < qyx_> https://duckduckgo.com/?q=composite+video+emitter+follower+-patent+-patents
2014-02-14T00:11:16 < ds2> let me try the full version
2014-02-14T00:11:39 < zyp> I don't see any patent
2014-02-14T00:11:46 < ds2> I still see that link
2014-02-14T00:12:05 < zyp> doesn't show up here
2014-02-14T00:12:08 < qyx_> i even tried scrolling few times down, no patent here
2014-02-14T00:12:24 < ds2> Ah ha
2014-02-14T00:12:34 < ds2> if I allow javascript, the link disappears
2014-02-14T00:12:38 < qyx_> lol
2014-02-14T00:12:39 < ds2> if I disable it, the link appears...wtf
2014-02-14T00:12:59 < zyp> filtered on client side? :p
2014-02-14T00:13:05 < qyx_> also browsing without js in 2014 is like.. adventurous
2014-02-14T00:13:14 < ds2> only select sites are allowed JS
2014-02-14T00:13:22 < ds2> too much abuse using it to pop up windows, etc
2014-02-14T00:13:28 < gxti> i used noscript for a while, long since gave up
2014-02-14T00:13:32 < zyp> sounds like an exercise in getting nothing done
2014-02-14T00:13:34 < gxti> or rather it's still there but blacklist only
2014-02-14T00:13:42 < zyp> pop up windows? is this 1998?
2014-02-14T00:13:48 < ds2> no, CSS based popups
2014-02-14T00:13:50 < qyx_> never had problems with popups
2014-02-14T00:13:54 < qyx_> ah
2014-02-14T00:13:56 < ds2> ones that try to follow you around as you scroll
2014-02-14T00:14:11 < qyx_> so let them follow you
2014-02-14T00:14:12 < ds2> like the damn forex bastards pestering about surveys
2014-02-14T00:14:15 < qyx_> and don't bother
2014-02-14T00:14:18 < ds2> it blocks the screen
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2014-02-14T00:20:08 < gnomad> I'm stunned at the state of the web every time I happen to browse on something without an ad and pop-up blocker installed.
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2014-02-14T00:43:28 < prattmic> I manage to survive without AdBlock.  If a site is full of shit, I just leave
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2014-02-14T01:41:05 < ds2> arrrrrrrrrrrrrrggggg
2014-02-14T01:41:16 < ds2> wish there was a simple write up - what is a bad NF and what is a good NF
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2014-02-14T01:55:42 < dongs> zyp: bills thread shit released
2014-02-14T01:55:56 < dongs> zyp: https://github.com/bn999/uThread
2014-02-14T01:56:58 < gxti> gplv3? useless
2014-02-14T01:57:05 < dongs> lul
2014-02-14T02:03:39 < qyx_> wheres that oocd 0.8.0
2014-02-14T02:03:47 < qyx_> i found it last time and forgot where
2014-02-14T02:03:49 < qyx_> meh
2014-02-14T02:05:25 < dongs> why do you have to search for opensauce software
2014-02-14T02:07:06 < qyx_> because it doesnt appear in front of me when i want it to
2014-02-14T02:07:15 < qyx_> i have to use search in these occasions
2014-02-14T02:08:18 -!- ntfreak [~ntfreak@unaffiliated/ntfreak] has quit [Read error: Operation timed out]
2014-02-14T02:08:32 < dongs> look no further than dice.com owned freshmeat.net
2014-02-14T02:08:58 < dongs> Kawaii Emoji Messenger 0.2.1
2014-02-14T02:08:59 < dongs> Kawaii Emoji Messenger is a multiplatform Facebook client based on the idea of bringing emoji to the desktop. It lets you use a full set of emoji in your Facebook conversations, statuses, and comments...(more)
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2014-02-14T02:13:21 < zyp> dongs, looks about on par with my improved shit
2014-02-14T02:14:38 -!- trepidaciousMBR [~trepidaci@217.155.204.2] has quit [Quit: trepidaciousMBR]
2014-02-14T02:14:58 < dongs> status of installing kawaii emoji messenger
2014-02-14T02:14:58 < zyp> my context switch will also put the cpu to sleep if there are no threads ready to run
2014-02-14T02:15:11 < zyp> which his doesn't seem to do
2014-02-14T02:15:42 < dongs> how is that done? the WFI shit?
2014-02-14T02:16:07 < zyp> SLEEPONEXIT
2014-02-14T02:16:37 < zyp> which is an implicit wfi after all pending interrupts are processed
2014-02-14T02:18:08 < zyp> FSTMDBS R0!, {S0-S31}// store FPU regs
2014-02-14T02:18:36 < dongs> ya?
2014-02-14T02:18:38 < zyp> that looks kinda dumb, as far as I know half of the FPU regs are already stored by hardware
2014-02-14T02:19:00 < zyp> hmm, or maybe that was configurable
2014-02-14T02:19:00 < dongs> stored wheer?
2014-02-14T02:19:03 < dongs> configurable
2014-02-14T02:19:04 < zyp> stack, of course
2014-02-14T02:19:06 < dongs> the lzy save or whatever shit
2014-02-14T02:19:13 < Thorn> https://www.google.com/search?q=__get_PRIMARK() finds a lot of interesting stuff
2014-02-14T02:19:27 < zyp> lazy doesn't matter for a context switch
2014-02-14T02:19:39 < Thorn> eh google fucked up PRIMA*S*K
2014-02-14T02:19:41 < dongs> Thorn: cuz  you should be looking for _ _get_PRIMASK
2014-02-14T02:19:43 < zyp> lazy means that instead of storing them for every interrupt, you only allocate room on the stack
2014-02-14T02:19:55 < zyp> and then you store it if an fpu instruction is called inside the ISR
2014-02-14T02:19:58 < dongs> Thorn: those are just cmsis internals
2014-02-14T02:20:13 < Thorn> no there're a lot of other libraries
2014-02-14T02:20:18 < dongs> zyp: right right.. i think we've been through this discussion before
2014-02-14T02:20:24 < Thorn> looks like some custom stuff too
2014-02-14T02:20:34 < dongs> zyp: checking if a thread has fpu calls or not vs just saving shit all the time wouldn't really matter all that much
2014-02-14T02:20:39 < zyp> either way, that context switch looks wasteful
2014-02-14T02:20:40 < roxfan> http://infocenter.arm.com/help/topic/com.arm.doc.dai0298a/index.html  Cortex-M4(F) Lazy Stacking and Context Switching
2014-02-14T02:20:54 < zyp> dongs, that's not what I'm saying
2014-02-14T02:21:05 < zyp> I'm saying that it seems like fpu regs are stored twice
2014-02-14T02:22:10 < dongs> it seems only s0.s15 are saved?
2014-02-14T02:22:19 < dongs> hmm or not
2014-02-14T02:22:25 < zyp> yes, I said half of them
2014-02-14T02:22:41 < zyp> half of them are stored by hardware, just like r0-3, etc…
2014-02-14T02:22:57 < zyp> so the context switch only needs to care about the other half
2014-02-14T02:25:52 < dongs> but zyp
2014-02-14T02:25:57 < dongs>     FPU->FPCCR &= ~FPU_FPCCR_ASPEN_Msk;                     // turn off FP context save
2014-02-14T02:26:00 < dongs>     FPU->FPCCR &= ~FPU_FPCCR_LSPEN_Msk;                     // turn off lazy save
2014-02-14T02:26:03 < dongs> doesnt that disable it?
2014-02-14T02:26:22 < zyp> right
2014-02-14T02:26:48 < zyp> that would work
2014-02-14T02:27:05 < zyp> also, that means that you're fucked if one of your ISRs calls any FPU instructions
2014-02-14T02:27:16 < dongs> how so
2014-02-14T02:27:26 < zyp> it would clobber the state of the current thread
2014-02-14T02:27:32 < dongs> this already *does* work with ISRs calling float.
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2014-02-14T02:28:27 < zyp> ABI says that half the regs are caller-save and half the regs are callee-save
2014-02-14T02:28:38 < dongs> in any mode? or lazy mode
2014-02-14T02:28:45 < zyp> irrelevant
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2014-02-14T02:28:59 < dongs> linky
2014-02-14T02:29:00 < zyp> (i.e. both)
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2014-02-14T02:30:10 < dongs> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0298a/index.html opk so according to this lspen/aspen at zero means NO automatic preseveration of regs
2014-02-14T02:30:18 < dongs> so I don't think half get saved in that case?
2014-02-14T02:30:23 < zyp> exactly
2014-02-14T02:30:30 < dongs> so teh code is correct then..
2014-02-14T02:31:15 < zyp> but the ABI mandates that s0-s15 is saved by the caller, so that functions are free to overwrite them as they like without preserving previous contents
2014-02-14T02:31:31 < dongs> where does it say that
2014-02-14T02:31:55 < zyp> AAPCD
2014-02-14T02:31:57 < zyp> AAPCS
2014-02-14T02:32:14 < Thorn> btw if anyone still hasn't pirated the 3rd edition of Yiu I highly recommend to do so
2014-02-14T02:32:23 < dongs> yiwaht
2014-02-14T02:32:52 < Thorn> it's over twice as big as the 2nd ed
2014-02-14T02:32:54 < zyp> http://www.scribd.com/josephyen/d/6546078-ARM-Architecture-Procedure-Call-Standard#page=17
2014-02-14T02:33:02 < dongs> fuck scribd
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2014-02-14T02:33:19 < dongs> isnt that for the cortex-Ashit?
2014-02-14T02:33:20 < dongs> or is that same
2014-02-14T02:33:24 < zyp> Registers s16-s31 (d8-d15, q4-q7) must be preserved across subroutine calls; registers s0-s15 (d0-d7, q0-q3) do not need to be preserved (and can be used for passing arguments or returning results in standard procedure-call variants).
2014-02-14T02:33:24 < Thorn> dongs: http://www.amazon.com/Definitive-Cortex%C2%AE-M3-Cortex%C2%AE-M4-Processors-Edition/dp/0124080820
2014-02-14T02:33:28 < zyp> it's the same
2014-02-14T02:34:15 < dongs> thorn, that looks like an actual book. why would I read that instead of just asking on irc? :)
2014-02-14T02:38:47 < zyp> oh well, time for sleep
2014-02-14T02:39:14 < qyx_> ok, i should go too
2014-02-14T02:39:30 < qyx_> i am wondering why the stlinkv2 finds nothing
2014-02-14T02:39:50 < qyx_> i just realized that i connected unpopulated board
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2014-02-14T02:41:46 < dongs> http://www.youtube.com/watch?v=gLDYtH1RH-U attn Thorn
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2014-02-14T02:43:08 < Thorn> saw that a few hours ago
2014-02-14T02:43:20 < dongs> sry.
2014-02-14T02:43:40 < dongs> are those clowns going to jump
2014-02-14T02:45:36 < Thorn> they're not wearing parachutes so I'd say no
2014-02-14T02:46:31 < dongs> dont they have some backpacks
2014-02-14T02:46:32 < dongs> or is that just that
2014-02-14T02:46:58 < dongs> fuck
2014-02-14T02:47:04 < dongs> im feeling sick just watching that shit
2014-02-14T02:47:08 < dongs> and its not even maximized
2014-02-14T02:47:09 < dongs> heh
2014-02-14T02:47:18 < dongs> esp near the end
2014-02-14T02:48:33 < Thorn> https://www.youtube.com/watch?v=mTOChPRuqVw
2014-02-14T02:48:50 < Thorn> (lots of versions of that one on youtube)
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2014-02-14T02:49:10 < Thorn> some without music
2014-02-14T02:50:52 < dongs> fuck that shit
2014-02-14T02:55:46 < Thorn> dongs: some less epic Russian videos https://www.youtube.com/results?search_query=%D0%BD%D0%B0+%D0%B2%D1%8B%D1%88%D0%BA%D0%B5+%D0%B1%D0%B5%D0%B7+%D1%81%D1%82%D1%80%D0%B0%D1%85%D0%BE%D0%B2%D0%BA%D0%B8&sm=3
2014-02-14T02:55:55 < Thorn> vomit away
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2014-02-14T03:20:18 < dongs> haha
2014-02-14T03:20:19 < dongs> Pfft i can get higher than that...takes massive bong rip.
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2014-02-14T04:37:44 < qyx_> moved to launchpad's gcc 4.8.3 and my code no longer works
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2014-02-14T04:57:37 < dongs> cool
2014-02-14T04:57:40 < dongs> thats opensauce for  you
2014-02-14T04:59:01 < Thorn> 4.8.3 worked well for me, no problems
2014-02-14T05:00:24 < gnomad> track down what triggers it and file a bug report.
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2014-02-14T06:57:54 < upgrdman> anyone here played with harmonic drives?
2014-02-14T07:03:16 < GargantuaSauce_> no but i acknowledge their coolness
2014-02-14T07:05:14 < upgrdman> any idea if they're reasonably efficient? seems like a lot of power would be lost to flexing the rotor
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2014-02-14T07:08:28 < GargantuaSauce_> i think they're about as efficient as normal gears because you need multiple stages (or huge gears) for a traditional torque converter to achieve the same ratios
2014-02-14T07:08:45 < GargantuaSauce_> wear is a concern though
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2014-02-14T07:39:13 < emeb_mac> wonder if the flexible spline has fatigue problems in the long term...
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2014-02-14T08:46:23 < dongs> new noritake free vfd
2014-02-14T08:46:37 < dongs> 144×16 dot matrix SCK-7053B-144X16-01 evaluation kit sample or 16×2 character SCK-UX3J-16024-01 evaluation kit sample
2014-02-14T08:46:49 < dongs> http://www.noritake-elec.com/evalkit-sample.php
2014-02-14T08:46:56 < dongs> holy shit
2014-02-14T08:46:57 < dongs> gone already
2014-02-14T08:46:58 < dongs> LOL
2014-02-14T08:47:17 < dongs> igot that spam last night
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2014-02-14T10:44:29 < Thorn> attn dongs http://dedmaxopka.livejournal.com/72833.html
2014-02-14T10:46:46 < madist> obviously these guys were born without balls
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2014-02-14T12:40:18 < Thorn> https://www.youtube.com/watch?v=lP5Mj-TGaiw&list=PLC1783ED9DBCDECEE#t=19
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2014-02-14T13:18:46 < dongs> gettin stoned
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2014-02-14T13:36:52 < FreezingCold> What's the cheapest way to add WiFi (under $5) to a STM32F4 or F0?
2014-02-14T13:38:18 < fbs> $5 seems cheap
2014-02-14T13:38:56 < PaulFertser> FreezingCold: probably http://www.ebay.com/itm/Mini-USB-3G-Wireless-WiFi-IEEE-802-11b-g-n-150Mbps-AP-Router-Blue-/201010007446?pt=LH_DefaultDomain_15&hash=item2ecd214d96 is the cheapest
2014-02-14T13:38:59 < FreezingCold> the cheapest is a CC3000 so far
2014-02-14T13:39:25 < FreezingCold> fbs: seems weird to pay more for a WiFi chip than the microcontroller itself
2014-02-14T13:41:11 < fbs> why?
2014-02-14T13:41:48 < fbs> the cc3000 is everything you need in a chip
2014-02-14T13:42:14 < PaulFertser> 16:44 < Steffanx> This is one of the reasons i gave up on it: http://e2e.ti.com/support/low_power_rf/f/851/t/318642.aspx
2014-02-14T13:43:12 < alan5> fbs - Assuming reliablity and support are not your requirements :P
2014-02-14T13:43:48 < fbs> dont know about that :p
2014-02-14T13:43:56 < fbs> my shit never works anyway
2014-02-14T13:46:48 < zyp> 12:39:25 < FreezingCold> fbs: seems weird to pay more for a WiFi chip than the microcontroller itself
2014-02-14T13:47:02 < zyp> even considering the wifi-chip is a SoC of it's own?
2014-02-14T13:51:57 < alan5> You might be interested in the work of the guys at spark. Theyre using a stm32fx (1 i think) and a CC3000 and were a kickstarter. Theyve open sourced their code on github. Though seems they have run into issues now http://e2e.ti.com/support/low_power_rf/f/851/p/315682/1103321.aspx#1103321
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2014-02-14T14:02:10 < qyx_> any idea of how to use PB3 on F1 as gpio?
2014-02-14T14:02:13 < qyx_> it is jtdo by default
2014-02-14T14:02:23 < qyx_> i did jtag disable in MAPR
2014-02-14T14:02:30 < qyx_> but no luck
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2014-02-14T14:29:22 < Steffanx> FreezingCold, another cheap way: Get some nintendo DS wifi module, try to find the datasheet of the chipset used and write your own sdio driver :P
2014-02-14T14:31:11 < Steffanx> alan5, those guys must also have issues with socket close that doesnt work well, socket resets ( by the other side ) that aren't handled properly etc.
2014-02-14T14:35:40 < Steffanx> TI did everything to make debugging it yourself impossible. From what I understand the debug trace/uart is encrypted.
2014-02-14T14:36:30 < alan5> Steffanx - yea ptobably. My problem is its been out for how long? a year? TI seem to promote it, but dont put the time/interest in it to fix it up.
2014-02-14T14:37:21 < Steffanx> No they seem to put their time into a new module, the CC3100
2014-02-14T14:38:17 < Steffanx> I feel sorry for you.. you have to use it.
2014-02-14T14:40:05 < alan5> Seen someone asking about that, and were told its currently internal / development atm. Is the CC3000 internals that bad, they have given up fixing it via software? Meh, its a challenge :P Ive settled on the fact im going to need some form watchdog to reset my MCU when the CC3000 runs into issues.
2014-02-14T14:41:02 < Steffanx> You also have to reset the cc3000 not?
2014-02-14T14:43:02 < alan5> i havnt got that far yet. currently playing with some sensors atm. Im hoping the CC3000 SW EN pin going low will be enough...
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2014-02-14T15:05:38 < Cyric> hey guys
2014-02-14T15:06:42 < Cyric> why on the header files they use #define instead of const char or const int or whatever? isn't is better for debugging.. ??
2014-02-14T15:09:29 < PaulFertser> Cyric: use -g3 and gdb will be able to expand macros.
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2014-02-14T15:12:48 < Steffanx> ty PaulFertser :P
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2014-02-14T15:18:34 < Cyric> ok thanks... so basically are the same right?
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2014-02-14T15:36:59 < PaulFertser> Cyric: variables it space, macros do not.
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2014-02-14T16:07:20 < dongs> zyp: no fpu saving is intentional. thre's no need for fpu in isr, but if you enable lazy saving or whatever, it will do it on *every* switch, whether you want it or not
2014-02-14T16:07:25 < dongs> zyp: so thats why it was done like that
2014-02-14T16:09:17 < zyp> sure
2014-02-14T16:10:21 < zyp> I just said that using FPU in ISRs wouldn't work,
2014-02-14T16:10:40 < zyp> so if they aren't needed, that's perfectly fine, but that's not what you said yesterday ;)
2014-02-14T16:11:22 < dongs> < dongs> this already *does* work with ISRs calling float.
2014-02-14T16:11:24 < dongs> hm yeah fail
2014-02-14T16:11:29 < dongs> im pretty sure i meant threads :P
2014-02-14T16:11:41 < zyp> sure, that's fine
2014-02-14T16:12:15 < dongs> too high on dicknplace fumes
2014-02-14T16:12:22 < zyp> also, the point of the lazy stuff is also to avoid saving fpu context for every interrupt
2014-02-14T16:12:42 < zyp> you have three modes; no saving, normal saving and lazy saving
2014-02-14T16:13:47 < zyp> no saving will never save, normal saving will always save, but lazy saving will only allocate space on stack, which just means adding a number to the stack pointer
2014-02-14T16:15:02 < zyp> so if fpu is not used in isr context, that area on the stack will not be used
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2014-02-14T16:15:27 < zyp> so you get the possibility to use FPU in ISRs, with minimal overhea
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2014-02-14T18:53:58 < Thorn> https://www.youtube.com/watch?v=Xepzu7AIH08
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2014-02-14T21:55:53 < karlp> hah, new discovery nfc boards: http://www.cnx-software.com/2014/02/14/stmicro-to-launch-24-m24sr-discovery-kit-for-nfc-applications-at-embedded-world-2014/
2014-02-14T21:56:31 < karlp> $25 for stm32f103 with a meg of flash, nfc, lcd, joystick
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2014-02-14T21:58:53 < gnomad> ST is just going crazy with their discovery boards.
2014-02-14T22:00:55 < karlp> hrm, good, usb is actually connected properly, not jsut for powering the device
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2014-02-14T22:47:36 < Thorn> http://www.fedevel.com/welldoneblog/2013/11/extreme-wiring/
2014-02-14T22:48:48 < karlp> nice :)
2014-02-14T22:49:25 < karlp> I'm surprised you would even think it worth the effort of the soldering,
2014-02-14T22:49:43 < karlp> the stories I've heard of kinking cables the wrong way and gettin gige stuf ffailing
2014-02-14T22:50:11 < Thorn> I hoped for some air-wired DDR3 running memtest with no errors lol
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2014-02-14T22:56:31 < zyp> karlp, keep in mind that M24SR is just a tag, not a reader
2014-02-14T22:56:47 < Thorn> Leave your board running memory test for weeks (months). Be sure you backup your main power source in case of electricity interruption (otherwise you will need to start again).
2014-02-14T22:56:47 < zyp> the main difference from M24LR is the protocol
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--- Day changed Sat Feb 15 2014
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2014-02-15T00:34:35 < Thorn> who wants to learn some dsp https://www.edx.org/course/ricex/ricex-elec301x-discrete-time-signals-1032
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2014-02-15T00:40:28 < Steffanx> looks nice Thorn
2014-02-15T00:40:40 < Steffanx> the problem is.. i always forget about the course i follow :D
2014-02-15T00:40:52 < Steffanx> *courses
2014-02-15T00:41:36 < Thorn> it's pretty strange, no lectures for the first 3 weeks. "here's some time brush up on your linear algebra & matlab skills lol". only 6 weeks of actual lectures
2014-02-15T00:41:51 < Steffanx> oh that actually sounds useful for me
2014-02-15T00:41:53 < Thorn> *some time to
2014-02-15T00:43:06 < Thorn> you can't cramp much useful stuff into 6 weeks imo. that French coursera course I took must have been more thorough
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2014-02-15T00:45:03 < Steffanx> french.. as in in french?
2014-02-15T00:46:03 < Thorn> in English but by https://www.coursera.org/epfl
2014-02-15T00:48:09 < Steffanx> you have time to follow all these coursees Thorn?
2014-02-15T00:48:11 < Steffanx> :P
2014-02-15T00:49:42 < Thorn> no more than 1 or 2 at the same time (usefully)
2014-02-15T00:51:45 < Steffanx> you have a fulltime job no?
2014-02-15T00:52:06 < Steffanx> *dont you
2014-02-15T00:53:32 < Thorn> yes I do but I work from home which helps a lot
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2014-02-15T00:56:25 < FreezingCold> Steffanx: the probably would be soldering that
2014-02-15T00:56:31 < Steffanx> ah, nice.. that probably helps a lot.
2014-02-15T00:56:40 < Steffanx> FreezingCold, perhaps yes :)
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2014-02-15T02:21:07 < dongs> https://www.kickstarter.com/projects/nativeunion/jump-the-first-charging-solution-that-fits-your-li/
2014-02-15T02:21:10 < dongs> lol
2014-02-15T02:21:15 < dongs> 'development' part
2014-02-15T02:23:08 < qyx_> uhm, autocharge(tm), inteligent!
2014-02-15T02:23:18 < Thorn> attn dongs http://blog.stanis.ru/img/65293.jpg
2014-02-15T02:23:27 < dongs> heh
2014-02-15T02:23:42 < dongs> this is the part makes no sense
2014-02-15T02:23:47 < dongs> https://s3.amazonaws.com/ksr/assets/001/509/082/69e855d7187ffece3aba40121dec85c8_large.png?1389234839
2014-02-15T02:23:50 < dongs> https://s3.amazonaws.com/ksr/assets/001/491/857/48d9a687d2c68644f04f8079478c2e5f_large.jpg?1388758331
2014-02-15T02:23:53 < dongs> https://s3.amazonaws.com/ksr/assets/001/509/086/b1ea0df4fe58daf2ec23636e6ee154dd_large.png?1389234860
2014-02-15T02:23:56 < dongs> https://s3.amazonaws.com/ksr/assets/001/491/863/c70cc0b38bd19c77df8f7999779b96ad_large.jpg?1388758407
2014-02-15T02:24:11 < dongs> who the fuck does mechanical design before actually maing a board that fits there????
2014-02-15T02:24:38 < qyx_> lol the layout
2014-02-15T02:25:08 < dongs> yeah layout doesnt evne match anything tyhey got there
2014-02-15T02:25:33 < qyx_> no i mean the third picture here https://s3.amazonaws.com/ksr/assets/001/491/863/c70cc0b38bd19c77df8f7999779b96ad_large.jpg?1388758407
2014-02-15T02:25:52 < dongs> right
2014-02-15T02:25:57 < dongs> there's no hole in their circuitboard.
2014-02-15T02:26:01 < zyp> qyx_, it's a pour drawed as outline only, with a trace running through
2014-02-15T02:26:24 < zyp> is what I concluded, after being confused a bit by it
2014-02-15T02:26:39 < Ranewen> i thought that "jump" was a trollsite...
2014-02-15T02:26:41 < qyx_> it seems so
2014-02-15T02:26:49 < qyx_> after some investigation
2014-02-15T02:27:12 < dongs> it seems after some investigation that they dont even ahve a product
2014-02-15T02:27:44 < Ranewen> :D
2014-02-15T02:27:59 < qyx_> wtf is that, my mcp23s17 expander board doesn't start until i touch it
2014-02-15T02:28:05 < qyx_> huh
2014-02-15T02:28:34 < dongs> good job.  you're ready to be hired by nativeunion as main designer.
2014-02-15T02:28:41 < dongs> that's further than they got.
2014-02-15T02:29:02 < qyx_> all inputs are at a defined state, proper delays, proper timing
2014-02-15T02:29:24 < qyx_> if i keep it of for about 2 minutes, it won't start again
2014-02-15T02:29:30 < qyx_> *off
2014-02-15T02:30:06 < zyp> dongs, btw, boards arrived the other day
2014-02-15T02:30:52 < zyp> I'm a bit confused about how they apparently ran out of 4-pin connectors
2014-02-15T02:32:29 < zyp> not that it matters, it was only three boards, and I have a ton of connectors here, so I'll just assemble them myself some time
2014-02-15T02:33:17 < zyp> but still, did they manage to destroy ~80 connectors or what?
2014-02-15T02:34:55 < dongs> from what i understand they were bitching nonstop about them not fitting
2014-02-15T02:34:59 < dongs> and needingf force or somethign
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2014-02-15T02:36:47 < zyp> sure, but they shouldn't be that easy to destroy anyway :p
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2014-02-15T02:41:00 < dongs> all i know is tehre was bitching.
2014-02-15T02:51:09 < GargantuaSauce> is there ever anything else
2014-02-15T02:51:26 < dongs> they dont bitch about my pcba jobs
2014-02-15T02:51:39 < gxti> dongsfab is infalliable
2014-02-15T02:51:56 < GargantuaSauce> probably cause you actually do qa
2014-02-15T02:52:17 < qyx_> hm, probably crosstalk on these china dupont wires :S
2014-02-15T02:52:47 < qyx_> changing gpio to AF output pushpull 2MHz helped
2014-02-15T02:54:05 < qyx_> there were spikes of around 0.4Vcc induced on sck line by chip selects
2014-02-15T02:57:40 < qyx_> but, huh
2014-02-15T02:57:41 < qyx_> whatever
2014-02-15T03:01:32 < gxti> ok, time to design something silly. a 24v lead acid battery charger... with ethernet
2014-02-15T03:02:10 < dongs> and NTP
2014-02-15T03:02:18 < dongs> so you know down to microsecond how long charging takes
2014-02-15T03:02:20 < Thorn> PoE
2014-02-15T03:02:23 < GargantuaSauce> needs more wifi
2014-02-15T03:02:33 < gxti> wifi is for communists
2014-02-15T03:03:04 < Steffanx> gxti, make an ethernet controlled smps and make beaky happy.
2014-02-15T03:03:12 < gxti> lol no
2014-02-15T03:03:22 < dongs> haha
2014-02-15T03:03:36 < qyx_> was about to say
2014-02-15T03:03:42 < gxti> i forget exactly what he was doing, but this isn't it
2014-02-15T03:03:52 < Steffanx> it is....
2014-02-15T03:04:02 < qyx_> it is, he was doing a smps charger
2014-02-15T03:04:47 < gxti> it was hard to tell with all the stupid things he kept coming up with
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2014-02-15T03:05:25 < Steffanx> to make dongs happy.. he now went for some renesas mcu
2014-02-15T03:05:32 < gnomad> despite the bazillions of questions he asked, the only project he made reference to working on was the smps charger.
2014-02-15T03:05:33 < dongs> good shit.
2014-02-15T03:05:37 < gnomad> at least that I saw anyway
2014-02-15T03:05:41 < dongs> hopefully he spams #renesas now and djdelorie
2014-02-15T03:06:02 < gxti> yeah, anyway. i have a plan. it's a stupid plan, but it's a plan.
2014-02-15T03:06:21 < gnomad> if he ever disappears, someone needs to make a beaky bot.
2014-02-15T03:06:30 < gnomad> that shouldn't be terribly difficult
2014-02-15T03:06:32 < dongs> braking news partiallystabled bought out by google
2014-02-15T03:06:59 < gxti> no, that's the android dildo project. entirely different.
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2014-02-15T03:08:59 < qyx_> tell us the stupid plan
2014-02-15T03:09:59 < gxti> oh. it's for a battery backup system. the ethernet is just for monitoring, but the shit plugged into the battery can also talk over rs485 or something. haven't entirely figured that part out yet.
2014-02-15T03:10:08 < Steffanx> We'll decide if its kickstarter worthy..
2014-02-15T03:10:21 < gxti> maybe fsk over the wiring even
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2014-02-15T05:25:51 < dongs> GargantuaSauce: found the servo you need http://www.tonegawaseiko.co.jp/pro/e_pro02.html
2014-02-15T05:28:21 < dongs> i'll get 24 of them and we can make a hexapod of doom
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2014-02-15T06:27:17 < GargantuaSauce> holy fuck that has a lot of torque dongs
2014-02-15T06:27:25 < GargantuaSauce> no serial interface though
2014-02-15T06:28:14 < GargantuaSauce> that and a bearing/bushing opposite the drive spline are sort of mandatory i think
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2014-02-15T06:28:33 < GargantuaSauce> i totally support the notion of a collaborative effort though!
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2014-02-15T06:35:08 < GargantuaSauce> currently my plan is to build new control electronics based on the F1 with a serial connection to an A10 board (or maybe just nrf24l01+ wireless to a pc), do some fancy shit with the platform i've got, then start making bigger servos out of cheap chinese gearmotors or something
2014-02-15T06:37:58 < GargantuaSauce> cause i don't think there are any off the shelf servos that both meet my needs and aren't obscenely expensive (50+ each)
2014-02-15T06:41:08 < GargantuaSauce> the ideal would be like, dynamixel MX-106 but yeah that's a bit past my price range
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2014-02-15T06:50:05 < GargantuaSauce> need to figure out pcb design in dicktrace and diy etching
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2014-02-15T10:28:09 < beaky> hello
2014-02-15T10:28:17 < beaky> is it possible to assign an arbitrary function as an ISR on stm32
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2014-02-15T10:42:18 < PaulFertser> beaky: it's way easier to use predefined names according to the library documentation.
2014-02-15T10:42:28 < beaky> ah
2014-02-15T10:42:52 < PaulFertser> They use "weak" linking so if you define the same function it overrides the default one.
2014-02-15T10:42:58 < beaky> what if i want to write a library that lets the user specify an arbitrary function or timer peripheral to use as a timebase
2014-02-15T10:44:49 < PaulFertser> beaky: if you want to do that runtime, then you'll need dynamic (runtime) dispatch.
2014-02-15T10:45:17 < PaulFertser> beaky: the ISR handler name is used in the "vectors" array, that is written to flash.
2014-02-15T10:45:32 < PaulFertser> (unless you're running from RAM of course)
2014-02-15T10:45:41 < beaky> btw how do i run my program in ram
2014-02-15T10:45:48 < beaky> i heard running in ram is fater than flash
2014-02-15T10:45:51 < beaky> fastter*
2014-02-15T10:45:56 < beaky> >.< faster*
2014-02-15T10:47:25 < PaulFertser> It depends. For linear code it's the same thanks to "flash acceleration" (I'm not sure if that's true for f4 running on the highest clock).
2014-02-15T10:55:47 < dongs> https://lists.debian.org/debian-ctte/2014/02/msg00394.html lol
2014-02-15T10:55:57 < dongs> who let beaky back in
2014-02-15T10:56:31 < beaky> why is there a lot of drama regarding systemd?
2014-02-15T10:58:28 < GargantuaSauce> because ubuntu
2014-02-15T10:58:34 < dongs> luniux for niggers
2014-02-15T10:58:44 < GargantuaSauce> the real distros have been using it for years
2014-02-15T10:59:04 < PaulFertser> dongs: you'll like this too: https://lists.debian.org/debian-devel/2014/02/msg00462.html
2014-02-15T11:00:17 < dongs> PaulFertser: ahah.
2014-02-15T11:09:47 < GargantuaSauce> amazing
2014-02-15T11:10:58 < beaky> has anyone here built any smps with stm32
2014-02-15T11:11:07 < beaky> what limitations or challenges did you face?
2014-02-15T11:13:36 < dongs> public service announcement: everyone please /ignore beaky
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2014-02-15T11:13:44 < beaky> why? :(
2014-02-15T11:13:51 < dongs> (if you havent already)
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2014-02-15T11:20:28 < GargantuaSauce> you offend his greater sensibilities
2014-02-15T11:20:33 < GargantuaSauce> a badge of honour, if you ask me
2014-02-15T11:29:36 < beaky> how does stm32 compare to the offerings from TI (stellaris, tiva c), NXP (lpc series), and Atmel (AT91SAM)
2014-02-15T11:29:49 < beaky> i've only used stm32 and AT91SAM
2014-02-15T11:30:05 < dongs> how does beaky compare to a shitty troll
2014-02-15T11:30:13 < beaky> :(
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2014-02-15T12:48:47 < beaky> how do i tell the time with stm32
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2014-02-15T13:32:46 < bvernoux> beaky: with RTC but it shall have also a 32.768KHz crystal
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2014-02-15T13:33:10 < beaky> ah :( i guess that will be hard to mount on the stm32f3discovery
2014-02-15T13:38:52 < claude> or use the internal 32khz osc , but you get lower accuracy
2014-02-15T13:41:12 < beaky> ok i will learn how to do it with the internall 32kHz clock
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2014-02-15T13:49:55 < Tectu_> Fine, you?
2014-02-15T13:51:41 < Tectu_> not to mention that every third person in switzerland is named like abdulla or allah or jugovic
2014-02-15T13:52:51 < Tectu_> R2COM, you're from germany, right?
2014-02-15T13:53:36 < Tectu_> ah
2014-02-15T13:53:53 < Tectu_> I'm currently forced to mess with that stuff in history class
2014-02-15T13:56:27 < Tectu_> heh
2014-02-15T13:56:35 < Tectu_> that's what our teacher says himself all the time as well
2014-02-15T13:56:56 < Tectu_> currently doing all that stalin stuff
2014-02-15T13:59:07 < Tectu_> I'm aware of the fact - but I guess that's not different anywhere on the world
2014-02-15T13:59:41 < Tectu_> lol what?
2014-02-15T13:59:44 < Tectu_> there's no such thing
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2014-02-15T14:42:38 < dongs> sup chats
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2014-02-15T14:48:08 < madist> its lonely here without beaky
2014-02-15T15:02:35 < Thorn> can this thing actually work?  http://www.fastcoexist.com/3024951/we-took-the-laser-scanner-that-tells-you-whats-in-your-food-out-for-a-spin
2014-02-15T15:03:29 < zyp> didn't that already get trolled to death?
2014-02-15T15:03:56 < Thorn> I haven't seen any trolling, was it discussed here?
2014-02-15T15:04:42 < BrainDamage> yes
2014-02-15T15:04:53 < jpa-> it was on drop kicker atleast
2014-02-15T15:04:53 < BrainDamage> and tldr: that's not how spectroscopy works
2014-02-15T15:05:07 < Thorn> that's what I suspected
2014-02-15T15:05:21 < Thorn> ok will search logs
2014-02-15T15:05:27 < BrainDamage> it was few months ago
2014-02-15T15:05:41 < jpa-> http://drop-kicker.com/2013/10/tellspec-food-analyzer/
2014-02-15T15:09:11 < Thorn> ok thanks
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2014-02-15T15:44:12 < Thorn> beaky: take this course https://www.edx.org/course/utaustinx/utaustinx-ut-6-01x-embedded-systems-1172
2014-02-15T15:48:02 < beaky> Thorn: I am taking it :D
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2014-02-15T16:26:08 < dongs> stonedddddd
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2014-02-15T16:32:13 < dongs> i built a bit more vaporware today
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2014-02-15T16:37:03 < Thorn> do fpc connectors normally have contacts on the bottom (the side closer to the pcb?)
2014-02-15T16:37:12 < Thorn> e.g. if you take a display like this http://www.buydisplay.com/media/catalog/product/cache/1/image/c577d1203d4a53d9f98182eb6081b1d6/7/_/7_inch_800x480_tft_lcd_touch_module_display_for_mp4_gps_tablet_pc.jpg
2014-02-15T16:37:23 < qyx_> it depends
2014-02-15T16:37:48 < Thorn> the cable has contacts on the top, you fold the cable under the display so the contacts are facing down?
2014-02-15T16:38:06 < dongs> totally depends on connector
2014-02-15T16:38:22 < qyx_> there are bottom contact and top contact connectors
2014-02-15T16:38:24 < dongs> hirose 0.3mm shit for example contacts are on top
2014-02-15T16:38:31 -!- roxfan [dunno@91.180.205.157] has quit [Ping timeout: 245 seconds]
2014-02-15T16:38:45 < qyx_> also some displays from eastrising have solderable fpc
2014-02-15T16:39:25 < Thorn> they sell connectors together with these displays
2014-02-15T16:39:31 < qyx_> yep
2014-02-15T16:39:36 < Thorn> so at least I know they should be compatible
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2014-02-15T16:40:58 < dongs> haha
2014-02-15T16:41:06 < dongs> i put down 6 chips from same cut tape
2014-02-15T16:41:10 < dongs> and theres 4 different date codes
2014-02-15T16:41:18 < Steffanx> china import?
2014-02-15T16:41:20 < dongs> ya
2014-02-15T16:41:22 < dongs> awesome
2014-02-15T16:41:26 < dongs> from 2005 to 2008
2014-02-15T16:41:31 < dongs> and different months
2014-02-15T16:42:11 < Steffanx> and at least 3 different revisions?
2014-02-15T16:42:12 < dongs> 0551, 0814, 0637, 0729, 0803
2014-02-15T16:42:14 < dongs> actually 5 different ones
2014-02-15T16:42:34 < Steffanx> + errata
2014-02-15T16:43:44 < Thorn> the display on the 429i-disco is mounted by folding its cable 180 degrees and the connector is under the display, correct? (and most if not all display modules I've seen are like that?)
2014-02-15T16:44:09 < Thorn> so displays are designed to sit on top of their connector?
2014-02-15T16:44:20 < qyx_> the fun part about the whole ee thing is that theres very few things that work on first try
2014-02-15T16:44:23 < qyx_> i hate errata's :S
2014-02-15T16:44:34 < qyx_> Thorn: i would say theres no connector
2014-02-15T16:44:41 < qyx_> but ask someone who actually has one
2014-02-15T16:45:22 < dongs> buydongs.com
2014-02-15T16:45:28 < Thorn> I wanted to finish the pcb before the displays arrive
2014-02-15T16:45:54 < Thorn> no google hits on anyone using this particular display
2014-02-15T16:46:07 < qyx_> most of the 320x240 3.2" things are solderable
2014-02-15T16:46:13 < qyx_> the one on buydisplay too
2014-02-15T16:46:50 < qyx_> and they can be soldered from both sides
2014-02-15T16:47:55 -!- Steffanx [~steffanx@unaffiliated/steffanx] has quit [Quit: Gone..]
2014-02-15T16:47:58 < dongs> are those the ones with a little hole in fpc
2014-02-15T16:48:02 < dongs> and tinned on both sides?
2014-02-15T16:48:11 < dongs> how the fuck do those get soldered manually
2014-02-15T16:48:14 < dongs> er i mean
2014-02-15T16:48:16 -!- Steffanx [~steffanx@unaffiliated/steffanx] has joined ##stm32
2014-02-15T16:48:16 < dongs> on production
2014-02-15T16:48:19 < dongs> manually?
2014-02-15T16:49:37 < qyx_> probably
2014-02-15T16:49:59 < qyx_> you just align and move the tip along the connector
2014-02-15T16:50:04 < qyx_> at least it worked for me
2014-02-15T16:54:47 < Thorn> I'd like it to be removable though so I don't think I should solder it directly
2014-02-15T16:59:11 -!- roxfan [dunno@91.180.205.157] has quit [Ping timeout: 260 seconds]
2014-02-15T17:00:35 -!- trepidaciousMBR [~trepidaci@217.155.204.2] has quit [Quit: trepidaciousMBR]
2014-02-15T17:01:44 -!- roxfan [dunno@91.180.205.157] has joined ##stm32
2014-02-15T17:02:46 < Thorn> this module has connectors on the other side of the pdb http://tinyurl.com/qekyfn9
2014-02-15T17:06:35 < dongs> start
2014-02-15T17:06:43 < beaky> hello
2014-02-15T17:07:19 < dongs> beaky:  irc.oftc.net #geda
2014-02-15T17:07:25 < dongs> talk to dj delorie there
2014-02-15T17:07:26 < dongs> kthx
2014-02-15T17:07:28 < dongs>  /part here please
2014-02-15T17:07:41  * madist thinks maybe dongs and beaky are in love
2014-02-15T17:09:16 < dongs> Content that is racist, sexist, illegal (especially encouraging copyright infringement), pornographic, or containing offensive language (i.e. swearing, obscenities, or other adult language) is not allowed in any gEDA communication channel.
2014-02-15T17:09:35 < dongs> Also, since many members of the gEDA community are professional engineers, please do not discuss any patents (current or expired) in any public gEDA communication channel.
2014-02-15T17:09:45 < madist> >  adult language
2014-02-15T17:09:53 < PaulFertser> Fuck that shit!
2014-02-15T17:09:54 < madist> so you can't use words that are longer than 5 characters ?
2014-02-15T17:12:09 < PaulFertser> I wonder if that famous jap masturbator device is patented? I guess my dick wouldn't care much anyway if I put it in there.
2014-02-15T17:12:12 < Thorn> especially no technical terms (so that kids/idiots don't offended)
2014-02-15T17:12:33 < dongs> PaulFertser: which one
2014-02-15T17:13:17 < PaulFertser> dongs: I guess all of them are. Anyway, just kidding, trying to violate all of their rules in as few words as possible.
2014-02-15T17:14:44 < PaulFertser> Probably should add something about torrenting an Altium copy to do some layout that's too complicated for gEDA.
2014-02-15T17:14:52 < dongs> haha
2014-02-15T17:15:03 -!- talsit [~talsit@FL1-122-131-152-50.osk.mesh.ad.jp] has quit [Quit: Leaving.]
2014-02-15T17:16:35 < beaky> haha
2014-02-15T17:17:17 < Thorn> PaulFertser: layout for an illegal masturbator clone of course
2014-02-15T17:17:32 < PaulFertser> Thorn: yeah!
2014-02-15T17:17:39 < PaulFertser> :D
2014-02-15T17:17:47 < beaky> "I need help layout out my arduino-based vibrator"
2014-02-15T17:18:04 < Thorn> +shield
2014-02-15T17:18:08 < beaky> the orgasmduino
2014-02-15T17:18:11 < Thorn> forgot the main swear word
2014-02-15T17:18:20 < madist> what is the difference between Cortex M4 and M4F ?
2014-02-15T17:18:31 < beaky> madist: the M4F incorporates a hardware floating-point unit
2014-02-15T17:18:32 < Thorn> floating point hardware
2014-02-15T17:18:39 < madist> thx
2014-02-15T17:19:01 < beaky> FPUs enable higher dynamic range in embedded computation
2014-02-15T17:19:09 < beaky> thanks to single-precision floats
2014-02-15T17:19:24 < Thorn> beaky are you a sales rep
2014-02-15T17:20:01 < beaky> nope i am a noob
2014-02-15T17:20:06 < beaky> i only got my stm32f3 last week
2014-02-15T17:20:25 < beaky> now i am trying to get ethernet to work on it
2014-02-15T17:20:32 < beaky> as well as RTC
2014-02-15T17:23:28 -!- emeb_mac [~ericb@ip68-104-219-168.ph.ph.cox.net] has joined ##stm32
2014-02-15T17:27:27 < Steffanx> didnt you go for renesas beaky?
2014-02-15T17:27:36 < dongs> dj delorie is a big renesas fan
2014-02-15T17:28:06 < bvernoux> it is funny Renesas is 1st MCU seller
2014-02-15T17:28:14 < bvernoux> and I have NEVER used any Renesas stuff
2014-02-15T17:28:21 < dongs> sauce>?
2014-02-15T17:28:24 < dongs> who says they're 1st
2014-02-15T17:28:27 < dongs> (other than renesas.com
2014-02-15T17:28:30 -!- sterna [~Adium@d83-183-118-166.cust.tele2.se] has quit [Quit: Leaving.]
2014-02-15T17:28:30 < bvernoux> they are ;)
2014-02-15T17:28:34 < qyx_> hh
2014-02-15T17:28:44 < bvernoux> at ST Micro they have show slide and ST was behind
2014-02-15T17:28:49 < bvernoux> and 1st Was Renesas
2014-02-15T17:29:15 < bvernoux> I think they are 1st mainly for automotive stuff ...
2014-02-15T17:29:20 < dongs> http://www.eetimes.com/document.asp?doc_id=1280842
2014-02-15T17:29:40 < dongs> renesas was #6 in 2012
2014-02-15T17:29:43 < dongs> and quickly dying
2014-02-15T17:29:58 < Thorn> china engineering http://tinyurl.com/n4hwkvd
2014-02-15T17:30:12 < beaky> i got my hands on stm32. theres no "Renesas RX discovery" like theres stm32f3discovery.
2014-02-15T17:30:23 < dongs> Thorn: looks good
2014-02-15T17:30:29 < dongs> realtek lvds driver.
2014-02-15T17:30:41 < dongs> or maybe parallel rgb driver
2014-02-15T17:30:43 < beaky> i love my stm32f3
2014-02-15T17:30:53 < beaky> it is like arduino but better in every single way
2014-02-15T17:30:57 < bvernoux> I have never found any interesting MCU at Renesas anyway
2014-02-15T17:31:12 < bvernoux> for embedded stuff the best are NXP with LPCxx and ST
2014-02-15T17:31:19 -!- emeb_mac [~ericb@ip68-104-219-168.ph.ph.cox.net] has quit [Quit: emeb_mac]
2014-02-15T17:31:41 < beaky> whar about atmel
2014-02-15T17:31:44 < qyx_> you forgot arduino
2014-02-15T17:31:55 < bvernoux> beaky: haha atmel ;)
2014-02-15T17:32:30 < bvernoux> qyx_: arduino is not really what i need for my project ...
2014-02-15T17:32:36 < beaky> they released some new core armtex m0+
2014-02-15T17:32:40 < beaky> ATSAMD20
2014-02-15T17:32:52 < bvernoux> beaky: compare with ST Micro you will see ;)
2014-02-15T17:33:06 < beaky> i dont think ST has any arm cortex m0+ offering, are there?
2014-02-15T17:33:36 < bvernoux> beaky: why to loose time with m0+ when you can have m4f with ultra low power
2014-02-15T17:33:56 < bvernoux> beaky: especially STM32F4@168Mhz are cold !!
2014-02-15T17:34:05 < dongs> beaky, I have put you on a permanent ignore, public and private. I have found you disturbing, rude and generally not worth talking to. According to the channels you hang on, it strengtens the effect of wanting to put you on ignore because of my lack of interest in you as a person. This message is not meant to be rude to you, just to inform you that i won't see anything of what you type from now on.
2014-02-15T17:34:07 < bvernoux> with power consumption of less than 50mA over 5V
2014-02-15T17:34:11 < Steffanx> i want some L4 :)
2014-02-15T17:34:12 < bvernoux> i doubt other have such features
2014-02-15T17:34:19 < qyx_> maybe the price?
2014-02-15T17:34:39 < bvernoux> dongs: woo ;)
2014-02-15T17:35:01 < bvernoux> qyx_: yes it depends on your product low cost L are better for that
2014-02-15T17:35:08 < beaky> dongs: :(
2014-02-15T17:35:58 < beaky> what did i do to upset him
2014-02-15T17:36:09 < Steffanx> your shitload of stupid questions.. i think.
2014-02-15T17:36:17 < Steffanx> yes, stupid questions.
2014-02-15T17:36:39 < Steffanx> but it seems you are known for your questions all around freenode.
2014-02-15T17:37:54 < beaky> :(
2014-02-15T17:39:47 < Steffanx> how do you think you got into the topic of #electronics?
2014-02-15T17:40:09 < beaky> it was because of a silly event that happened with my smps
2014-02-15T17:40:29 < qyx_> a smoke has escaped?
2014-02-15T17:40:33 < beaky> smoke was coming out all of a sudden, so i put "why is there smoke"
2014-02-15T17:40:35 < Steffanx> i think it was more because of all the events around that smps..
2014-02-15T17:41:07 < beaky> anyway, now that the smps is running under stm32f3, i have confidence that there will not be any smoke-related events
2014-02-15T17:41:19 < qyx_> uhm
2014-02-15T17:41:43 < Steffanx> ok...
2014-02-15T17:43:32 < beaky> thanks to you guys' awesome support teaching me stm32, there hopefully wont be any "why is my stm32f3 on fire" in the topic anytime soon :D
2014-02-15T17:44:50 < Steffanx> or you can just not ask this question.
2014-02-15T17:46:12 < bvernoux> when ST will do big MCU multi core for ultra hispeed embedded stuff ;)
2014-02-15T17:49:46 < beaky> hopefully sooner than later. embedding multiple cores in a microcontroller is the future
2014-02-15T17:50:05 < beaky> http://www.nxp.com/products/microcontrollers/cortex_m4/LPC4370FET256.html like this beast from nxp
2014-02-15T17:50:16 < bvernoux> beaky: it is what we are using in airspy
2014-02-15T17:50:22 < bvernoux> beaky: the FET100 version
2014-02-15T17:50:23 < beaky> and some cortex m3 + c2000 hybrid from TI
2014-02-15T17:50:31 < beaky> wow whats an airspy?
2014-02-15T17:50:34 -!- MrMobius [~Joey@194.176.111.174] has joined ##stm32
2014-02-15T17:50:35 < bvernoux> airspy.com
2014-02-15T17:50:50 < beaky> wow
2014-02-15T17:51:01 < bvernoux> I would have preferred to use an STM32 but there is nothing equivalent to LPC4370
2014-02-15T17:51:05 < beaky> software radio tahts incredible
2014-02-15T17:51:19 < beaky> (btw why would stm32 be preferable int hat application)
2014-02-15T17:51:34 < bvernoux> because I prefer to use stuff near my house ;)
2014-02-15T17:51:37 -!- kuldeepdhaka [~kuldeepdh@unaffiliated/kuldeepdhaka] has joined ##stm32
2014-02-15T17:51:54 < bvernoux> as ST build chipset in France in Fab and also engineering is done in France Grenoble
2014-02-15T17:52:19 < beaky> wow you live near ST fabs
2014-02-15T17:52:42 < beaky> so you can just walk by and ask for samples for the latest and greatest ST chips? :D
2014-02-15T17:53:30 < PaulFertser> bvernoux: why and how are you using that beefy multicore chip?
2014-02-15T17:53:34 < madist> bvernoux: how sensitive is that airspy ? what's the weakest signal it can pick up ?
2014-02-15T17:53:56 < bvernoux> we use it for the power behind
2014-02-15T17:54:01 < bvernoux> multi core is a must for radio
2014-02-15T17:54:03 < madist> does it compare to a good HAM radio for picking up weak signals ?
2014-02-15T17:54:16 < bvernoux> madist: we have some screenshot
2014-02-15T17:54:59 -!- prog [prog@airspy.com] has joined ##stm32
2014-02-15T17:55:51 < Thorn> AMD Launches First ARM-based Server CPU http://www.eetimes.com/document.asp?doc_id=1320985
2014-02-15T17:56:45 < bvernoux> madist: http://airspy.com/downloads/filter_shape.png
2014-02-15T17:57:08 < bvernoux> madist: GSM http://airspy.com/downloads/GSM.png
2014-02-15T17:57:36 < bvernoux> madist: http://airspy.com/downloads/les_grosses_tetes.png
2014-02-15T17:57:49 < bvernoux> madist: like that you have an idea of the actual beta version
2014-02-15T17:57:57 < beaky> software defined radio is awesome
2014-02-15T17:57:57 < qyx_> -80 is the noise floor?
2014-02-15T17:58:09 < prog> yes
2014-02-15T17:58:56 < MrMobius> yo dawg, i put a microcontroller in your microcontroller
2014-02-15T17:59:05 < dongs> bvernoux: is that shit opensauce
2014-02-15T17:59:06 < prog> that's in dBFS
2014-02-15T17:59:16 < bvernoux> dongs: of course it is open
2014-02-15T17:59:21 < bvernoux> dongs: see github.com/airspy
2014-02-15T17:59:37 < dongs> but its LPC so  its kinda useless.
2014-02-15T17:59:38 < bvernoux> dongs: we even have official OpenMoko USB ID now
2014-02-15T17:59:40 < dongs> well, i meant hardware
2014-02-15T18:00:01 < qyx_> prog: and the sensitivity in dBm?
2014-02-15T18:00:11 < prog> around -120
2014-02-15T18:00:17 < dongs> prog, hello.
2014-02-15T18:00:22 < qyx_> ok, actually not bad
2014-02-15T18:00:22 < prog> we're waiting for the lab report
2014-02-15T18:00:36 < prog> the NF is around 3.5dB
2014-02-15T18:00:40 < MrMobius> are they coming out with a DIP version?
2014-02-15T18:00:46 < prog> that gives you an idea of what can be done.
2014-02-15T18:01:07 < dongs> using MXL603 or so tuner?
2014-02-15T18:01:31 < bvernoux> dongs: no r820t
2014-02-15T18:01:34 < prog> no, we're using the venerable R820T
2014-02-15T18:01:37 < dongs> lol
2014-02-15T18:01:41 < dongs> come on. where's the innovation
2014-02-15T18:01:49 < prog> nowhere? :D
2014-02-15T18:01:58 < bvernoux> dongs: there is nothing better than r820t for the price
2014-02-15T18:02:16 < bvernoux> dongs: do not speak me about AD RF chipset which cost 300USD ;)
2014-02-15T18:02:28 < dongs> so this uses that newfag lpc with highspeed ADCs or osmthing?
2014-02-15T18:02:44 < prog> dongs: well. you have more, bandwidth, no IQ imbalance, no DC offset, no aliases
2014-02-15T18:02:45 < bvernoux> dongs: yes ADC HS 12bits up to 80MSPS
2014-02-15T18:02:51 < dongs> right ,k
2014-02-15T18:02:55 < qyx_> 300usd?
2014-02-15T18:02:56 < bvernoux> dongs: even if we can only use 20MSPS
2014-02-15T18:02:57 < dongs> looks like a clone of something else I saw recently
2014-02-15T18:03:07 < qyx_> there are synthesizers and iq demods for about $10
2014-02-15T18:03:07 < bvernoux> dongs: i really doubt that
2014-02-15T18:03:08 < MrMobius> the LPC ARM can summon two minion ARMs to do its bidding
2014-02-15T18:03:09 < dongs> similar proj,,, was pasted to me month or so ago
2014-02-15T18:03:16 < bvernoux> dongs: we work on such hw since more than 6 months
2014-02-15T18:03:34 < Thorn> you forgot to add an FPGA
2014-02-15T18:03:40 < dongs> fuck fpga
2014-02-15T18:03:44 < bvernoux> Thorn: for what ?
2014-02-15T18:03:59 < dongs> so what, $90 bucks or so for that?
2014-02-15T18:04:38 < Thorn> bvernoux: for all the DSP
2014-02-15T18:04:38 < MrMobius> $11 on mouser
2014-02-15T18:04:38 < prog> not so far from the target price
2014-02-15T18:05:09 < bvernoux> Thorn: DSP are done on host today even if we could do some stuff on M4F later
2014-02-15T18:06:00 < dongs> bvernoux: apparently the "clone" I thought your shit was of, is the same project
2014-02-15T18:06:10 < bvernoux> dongs: where ?
2014-02-15T18:06:46 < qyx_> ok, another two boards done
2014-02-15T18:06:47 < dongs> bvernoux: no it was like this few months ago dude goes <dude> heres new proj using some new lpc 80msps thing <dude> pastes pics
2014-02-15T18:06:47 < prog> dongs: your cross-correlation with yourself is zero
2014-02-15T18:06:49 < qyx_> waiting for a smoke
2014-02-15T18:06:56 < dongs> i asked him just now  and he says airspy.com
2014-02-15T18:06:59 < dongs> so. never mind l
2014-02-15T18:07:12 < prog> hehe
2014-02-15T18:07:32 < bvernoux> hehe
2014-02-15T18:08:33 < dongs> well, i'd pay <= $100 for it
2014-02-15T18:08:35 -!- amstan [~alex@aichallenge/admin/amstan] has joined ##stm32
2014-02-15T18:08:40 < prog> ok. I created a channel for discussing the technical stuff of airspy. feel free.
2014-02-15T18:09:04 < dongs> this place is as good as any, everyone's just trolling anyway.
2014-02-15T18:09:08 < prog> dongs: I can give a few freebies for people who can contribute.
2014-02-15T18:09:35 < bvernoux> dongs: the aim is also to have an hacking tool ;)
2014-02-15T18:09:52 < dongs> prog, I made a LPC43xx or something evalboard and havent got further than blink.exe on it. also I only use windows (the real OS)
2014-02-15T18:10:05 < dongs> so I'm probably not your target audience.
2014-02-15T18:10:12 < prog> well.
2014-02-15T18:10:41 < prog> I know very few people who can do proper PC, embedded and DSP coding
2014-02-15T18:10:42 < dongs> http://www.youtube.com/watch?v=vBmp3k82Reo
2014-02-15T18:10:56 < prog> so I'm used to people not being my target audience ;-)
2014-02-15T18:11:16 < Ranewen> the music owned me
2014-02-15T18:12:04 < Thorn> that is zyp's board is it not
2014-02-15T18:12:07 < dongs> yeah
2014-02-15T18:12:30 < dongs> made as in assembled.
2014-02-15T18:12:58 < bvernoux> dongs: anyway it is nice I have only seen some PCB not finished before here
2014-02-15T18:12:58 < Thorn> it at least has some pins broken out
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2014-02-15T18:13:26 < dongs> bvernoux: all my projects succeed
2014-02-15T18:13:44 < dongs> its people like "beaky" that just join irc to waste time
2014-02-15T18:13:57 < prog> hmm. pen1s competition.
2014-02-15T18:14:01 < Thorn> the ones that don't never happened, like in the Soviet space program
2014-02-15T18:15:20 < dongs> http://www.youtube.com/watch?v=jUizGK1Y3FA man why is this unlisted
2014-02-15T18:15:25 < dongs> i could be raking in ad dollahz
2014-02-15T18:15:55 < prog> dongs: how's that FC0013 project?
2014-02-15T18:16:14 < dongs> prog: done, by switching to mxl. been done months ago actually, everything is working etc
2014-02-15T18:16:17 < Ranewen> dongs: stop with the videos
2014-02-15T18:16:28 < prog> so you added a SAW filter?
2014-02-15T18:16:50 < dongs> i didnt add anything, i just got rid of fc. no proper vendor support, no proper code = fail.
2014-02-15T18:17:00 < dongs> redid hw with mxl603, and all is good
2014-02-15T18:17:14 < prog> the MXL is no better..
2014-02-15T18:17:27 < dongs> how so?
2014-02-15T18:18:07 < prog> are you happy with the iip3?
2014-02-15T18:20:14 < dongs> shrugs
2014-02-15T18:21:13 < prog> well. it will work in low density rural areas. that's for sure.
2014-02-15T18:21:56 < dongs> prog, if mxl sucked it wouldn't be in majority of commercial tuner NIMs etc.
2014-02-15T18:22:10 < dongs> FC/RT is only used by cheap knockoffs from china
2014-02-15T18:22:29 < prog> it depends of your definition the vast majority. 90% of the TVs use the silabs tuners.
2014-02-15T18:22:44 < prog> that's a very good product, if you can get it on your board.
2014-02-15T18:23:06 < prog> the next best choice of the moment is the R8XX series
2014-02-15T18:23:56 < prog> the others struggle filtering the harmonics of the FM BC in the bands of interest.
2014-02-15T18:24:02 < prog> not speaking of LTE...
2014-02-15T18:24:25 < dongs> um, my interest for mxl is strictly vhf/uhf DTV bands only
2014-02-15T18:24:34 < dongs> i dont give a shit about fm or stuff abot 800-ish mhz
2014-02-15T18:24:38 < dongs> abot=above
2014-02-15T18:24:45 < prog> and the FM BC transmitter will make your life very hard :-)
2014-02-15T18:25:01 < prog> their harmonics will splatter your spectrum
2014-02-15T18:25:07 < prog> unless the front end is rock solid
2014-02-15T18:25:50 < prog> until very recently, the compromises were made on sensitivity vs. strong signal handling.
2014-02-15T18:25:55 < prog> you could not get both.
2014-02-15T18:26:28 < prog> that's where definitions like IIP3, OIP3 come to the equation
2014-02-15T18:27:10 < prog> you can have a strong blocker out of band harmonic that just kills your LNA and your mixer
2014-02-15T18:27:58 < prog> designing receivers isn't that easy otherwise we'll see one on every shop :-)
2014-02-15T18:28:20 < dongs> never seen those silabs parts in anything.
2014-02-15T18:28:40 < prog> do you have a LED/Plasma tv?
2014-02-15T18:28:55 < prog> 9/10 of chance you have one hehe
2014-02-15T18:28:56 < dongs> plasma? what is this, 1996?
2014-02-15T18:29:26 < prog> who knows some folks don't have a tv even :D
2014-02-15T18:29:44 < prog> they're simply far from the small amateur market.
2014-02-15T18:31:21 < dongs> anyhow, my shit operates on a "it works, dont fuck with it" principle. mxl worked, fc didn't (mostly shitty code issues, no proper description of agc and half of the registers).
2014-02-15T18:31:43 < prog> all my best wishes of success.
2014-02-15T18:31:44 < dongs> it worked but it didnt work at certain input levels, trying to make agc work was hit and miss, etc.
2014-02-15T18:31:54 < prog> it's not a SDR.
2014-02-15T18:31:58 < dongs> right.
2014-02-15T18:32:02 < prog> less constraints/
2014-02-15T18:33:00 < prog> just to answer your question about the innovation, have a look on the IQ conversion algos on our github.
2014-02-15T18:33:30 < prog> I know no SDR as of today capable of giving clean IQ signals.
2014-02-15T18:34:05 < prog> MIT licence, enjoy. :-)
2014-02-15T18:34:12 -!- MrM0bius [~Joey@91.192.67.232] has joined ##stm32
2014-02-15T18:34:57 < dongs> libusb :\
2014-02-15T18:35:04 < dongs> pthread :\
2014-02-15T18:35:06 < dongs> what the hell.
2014-02-15T18:35:13 < prog> you prefer winusb on linux? :D
2014-02-15T18:35:14 < dongs> its like opensores, but not
2014-02-15T18:35:22 < dongs> i prefer shit that works
2014-02-15T18:35:28 < prog> the windows driver is not open ;)
2014-02-15T18:35:32 < prog> if that's the question
2014-02-15T18:35:32 < dongs> neither of those 2 thing are it.
2014-02-15T18:35:40 < dongs> wut
2014-02-15T18:35:44 < dongs> whaT "driver"
2014-02-15T18:35:48 < dongs> isnt it just a bulk usb device
2014-02-15T18:35:53 < prog> no.
2014-02-15T18:35:56 -!- MrMobius [~Joey@194.176.111.174] has quit [Ping timeout: 246 seconds]
2014-02-15T18:35:58 < dongs> why the fuck not?
2014-02-15T18:36:13 < prog> it does some extra stuff. when plugged to windows.
2014-02-15T18:36:35 < prog> again, the clever part is the algo ;)
2014-02-15T18:36:41 < dongs> so why couldnt you just do that "extra" stuff on mcu and just use winusb?
2014-02-15T18:37:04 < prog> because we have some more clever stuff reserved for the MCU
2014-02-15T18:37:16 < dongs> pfft
2014-02-15T18:37:19 < prog> (note the firmware code isn't published yet)
2014-02-15T18:37:44 < prog> as I said, the magic part is DSP
2014-02-15T18:37:47 < prog> the rest is meh.
2014-02-15T18:38:13 < dongs> i still dont see any valid reason for writing your own buggy windows kernel driver for a USB device that just sends bulk crap out.
2014-02-15T18:38:32 < dongs> if its only to protect some DSP smarts with closed sores, you sux. if its for any other reason, you sux anyway.
2014-02-15T18:38:40 < prog> because you're not a windows developer, and I am :-)
2014-02-15T18:39:03 < dongs> prog, i've written kernel drivers and debugged those written by others.
2014-02-15T18:39:23 < prog> I can teach you a few things about the kernel if you want.. but I can resume the situation as follows: zero copy
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2014-02-15T18:40:07 < prog> we're doing heavy dsp at 40MB/s. that's not like playing with a led blinky
2014-02-15T18:40:28 < rigid> it's playing with signals
2014-02-15T18:40:49 < dongs> prog, as opposed to getting that 40mb/s into a userland app and doing it all there?
2014-02-15T18:40:53 < dongs> still dont see the advantage.
2014-02-15T18:40:57 < qyx_> me neither
2014-02-15T18:41:16 < prog> well. hidden kernel api :-)
2014-02-15T18:41:30 < prog> but you get the idea. that's fine.
2014-02-15T18:41:35 < dongs> so its a buggy, closed sores driver that uses undocumented kernel apis?
2014-02-15T18:41:37 < dongs> fucking great.
2014-02-15T18:41:42 < qyx_> i didnt
2014-02-15T18:41:45 < qyx_> also, windows
2014-02-15T18:41:48 < dongs> is it even signed?
2014-02-15T18:41:53 < dongs> (for 64bit)
2014-02-15T18:42:04 < dongs> or do I have to press F8 like a hacker
2014-02-15T18:42:08 < prog> dongs: you have the clean, super fast libusb crapola :D
2014-02-15T18:42:10 < prog> hahaha
2014-02-15T18:42:41 < prog> working at M$ can help sometimes ;-)
2014-02-15T18:42:44 < dongs> prog, trolling aside im still waiting for a reasonable explanation why the fuck you need to do dsp in a kernel driver instead of sending all teh same shit to userspace and doing it there.
2014-02-15T18:42:56 < prog> anyway. enough trolling. get some time and learn some DSP
2014-02-15T18:43:07 < prog> it will help you in your project
2014-02-15T18:43:20 < qyx_> i like that attitude
2014-02-15T18:43:22 < rigid> use hidden kernel api -> get classified as malware in the future :-P
2014-02-15T18:43:24 < qyx_> "my approach is the best"
2014-02-15T18:43:34 < dongs> last guy who worked for microsoft ended up here > http://pbx.mine.nu/furan/
2014-02-15T18:43:38 < qyx_> and "i know what i am doing and you dont"
2014-02-15T18:44:03 < prog> qyx_: there's a small difference between "my approach is the best" and "I don't give a f* explaining what I do to the internet joe"
2014-02-15T18:44:21 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has quit [Ping timeout: 248 seconds]
2014-02-15T18:44:39 < dongs> prog, you just made sure that I'm never buying your device regardless of price
2014-02-15T18:44:43 < dongs> (not that you give a shit of course)
2014-02-15T18:44:51 < prog> have a look on crope's new linux kernel SDR api
2014-02-15T18:44:54 < qyx_> if you are building a community and want the people to be interested in your project, you should give a fuck
2014-02-15T18:44:58 < dongs> have a nice day.
2014-02-15T18:44:59 < prog> you'll know what I'm talking about.
2014-02-15T18:45:02 < dongs> prog, I have put you on a permanent ignore, public and private. I have found you disturbing, rude and generally not worth talking to. According to the channels you hang on, it strengtens the effect of wanting to put you on ignore because of my lack of interest in you as a person. This message is not meant to be rude to you, just to inform you that i won't see anything of what you type from now on.
2014-02-15T18:45:22 < qyx_> lol
2014-02-15T18:45:29 < gxti> el oh el
2014-02-15T18:45:29 < qyx_> second time today
2014-02-15T18:45:36 < prog> "I don't know dsp, I don't know kernel programming, but I know better than you" :D
2014-02-15T18:45:43 < prog> what an assitude :-)
2014-02-15T18:45:53 < zyp> wow, I go to the store and come back to this huge wall of text
2014-02-15T18:46:01 < zyp> can somebody give me a summary?
2014-02-15T18:46:08 < prog> zyp: shit happens
2014-02-15T18:46:12 < rigid> DSP in kernel space is the most retarded thing I ever heared...
2014-02-15T18:46:21 < rigid> windows, always surprises
2014-02-15T18:46:50 < prog> rigid: we're not doing dsp in the kernel, we're just preparing data in the required interleaved format using clever virtual memory techniques :-)
2014-02-15T18:47:03 < prog> that's required for doing proper DSP using SIMD.
2014-02-15T18:47:12 < prog> I hope that explains my point.
2014-02-15T18:47:34 < rigid> 'ksee
2014-02-15T18:47:34 < gxti> typically explaining is better than touting your authority if you want to be believed
2014-02-15T18:47:52 < zyp> «interleaved format» «virtual memory techniques» wat
2014-02-15T18:48:29 < prog> zyp: the I and Q data is interleaved. and LPF'ing the two channels needs contiguous buffers not inteleaved.
2014-02-15T18:49:01 < qyx_> and thats the "clever thing" you are using in kernel space using hidden api?
2014-02-15T18:49:13 < zyp> yes, and last time I checked there were no virtual memory tricks that works with smaller contiguous sizes than a single page
2014-02-15T18:49:18 < zyp> so I'm confused
2014-02-15T18:49:22 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has joined ##stm32
2014-02-15T18:49:23 < prog> that's some of the things that can be done better in the kernel.
2014-02-15T18:49:39 < prog> the rest is literrature.
2014-02-15T18:50:03 < dongs> zyp, never mind. its amazing hidden undocumented kernel calls that automatically make everything amazeballs.
2014-02-15T18:50:21 < dongs> and prog knows because he works at ms.
2014-02-15T18:50:25 < prog> I thought my lines were ignored.
2014-02-15T18:50:35 < MrM0bius> im watching the Zeitgeist movies
2014-02-15T18:50:37 < gxti> if it's like the linux kernel there's all kinds of secret GNU backdoors you can use to make your code 100x faster if you are a true believer
2014-02-15T18:50:43 < MrM0bius> dongs, have you seen this shit?
2014-02-15T18:51:08 < dongs> http://en.wikipedia.org/wiki/Zeitgeist:_The_Movie ?
2014-02-15T18:51:09 < dongs> no idea
2014-02-15T18:51:14 < dongs> i dont have a lot of time to watch trash films
2014-02-15T18:51:16 < MrM0bius> ya
2014-02-15T18:51:21 < MrM0bius> it is stupifying
2014-02-15T18:51:24 < dongs> Budget$7,000
2014-02-15T18:51:24 < dongs> haha
2014-02-15T18:51:30 < dongs> has to be good.
2014-02-15T18:51:50 < MrM0bius> free energy, 9/11 didnt happen, new age parenting methods
2014-02-15T18:51:54 < MrM0bius> its priceless
2014-02-15T18:52:11 < zyp> dongs, well, I'm not familiar with windows kernelspace, but this rather sounds like hardware features that doesn't exist :)
2014-02-15T18:52:21 < rigid> isn't zeitgeist only about religion?
2014-02-15T18:52:48 < MrM0bius> rigid, the first one is half religion and half 9/11 conspiracies. there are 2 more after that
2014-02-15T18:52:54 < rigid> ah
2014-02-15T18:52:56 < qyx_> it has multiple parts
2014-02-15T18:53:03 < dongs> zyp, he's DMA'ing USB buffers STRAIGHT INTO YOUR BRAIN with undocumented ntkernel api
2014-02-15T18:53:10 < dongs> with ZERO COPY
2014-02-15T18:53:11 < qyx_> MrM0bius: also watch idiocracy, the age of stupid, .. and such
2014-02-15T18:53:19 < rigid> i guess i got bored before the 9/11 stuff started
2014-02-15T18:53:48 < MrM0bius> im a sucker when it comes to lolsense
2014-02-15T18:53:50 < prog> shame on the unbelievers lol
2014-02-15T18:53:57 < rigid> zero copy from virtual memory is gonna be hard
2014-02-15T18:54:00 < MrM0bius> i read a few of glenn becks books just to laugh at him
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2014-02-15T18:54:22 < rigid> i guess it's kinda hard on windows to use shared memory from userspace :-P
2014-02-15T18:54:23 < gxti> MrM0bius: i doubt he minds
2014-02-15T18:54:35 < prog> rigid: ;)
2014-02-15T18:54:37 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has joined ##stm32
2014-02-15T18:54:54 < MrM0bius> wow, they are showing a reprap now
2014-02-15T18:54:56 < zyp> prog, are you one of bvernoux' friends?
2014-02-15T18:55:01 < dongs> zyp, yes
2014-02-15T18:55:03 < prog> me? never!
2014-02-15T18:55:09 < MrM0bius> turns out capitalism is evil and we should be fabricating our cars at home
2014-02-15T18:55:10 < dongs> he joined shortly after bvernoux spammed airspy stuff in here
2014-02-15T18:55:18 < bvernoux> dongs: haha
2014-02-15T18:55:22 < dongs> :D
2014-02-15T18:55:28 < zyp> ah, makes sense
2014-02-15T18:55:44 < prog> yes, we're all asses here.
2014-02-15T18:55:46 < MrM0bius> wheck his whois and see if he is also from ranceistan
2014-02-15T18:56:48 < dongs> but yeah im not installing any unsigned sekret api spyware from prog
2014-02-15T18:56:52 < zyp> I guess it's as pointless to argue with prog as it is to argue with bvernoux then, so I'll just let it be
2014-02-15T18:56:53 < dongs> i'll stick to my $6 rtlsdr shit
2014-02-15T18:56:57 < prog> it will be signed of course.
2014-02-15T18:57:02 < dongs> zyp, previous experience?
2014-02-15T18:57:39 < zyp> you know bvernoux is titanmkd, right? you haven't seen the arguments?
2014-02-15T18:57:43 < prog> zyp: how rational
2014-02-15T18:57:56 < dongs> zyp: are you fucking serious
2014-02-15T18:58:01 < gxti> ;););)
2014-02-15T18:58:02 < prog> well. I get the point.
2014-02-15T18:58:12 < bvernoux> hehe yes i changed my nick
2014-02-15T18:58:13 < dongs> zyp: i dont, but now all is clear
2014-02-15T18:58:14 < dongs> LOL
2014-02-15T18:58:18 < bvernoux> haha
2014-02-15T18:58:31 < gxti> dongs: he wants to show you his winky
2014-02-15T18:58:39 < zyp> prog, I don't like wasting my time when I'm neither getting through with my point nor turning out any wiser afterwards, so I'd rather spend it on something else
2014-02-15T18:59:10 < prog> feel free. I have the feeling I'm wasting my time too.
2014-02-15T18:59:23 < Thorn> is TFT response time of 20ms bad? will it be noticeable in an oscilloscope-like display?
2014-02-15T18:59:28 < dongs> http://media.giphy.com/media/koaF1lMHOL09a/giphy.gif
2014-02-15T19:00:00 < bvernoux> Thorn: i think 20ms TFT is very common
2014-02-15T19:00:26 < gxti> Thorn: not going to win any awards but i doubt it'll be an issue
2014-02-15T19:00:29 < bvernoux> Thorn: I really doubt they use overdrive and latest stuff on latest PC LCD screen
2014-02-15T19:00:47 < Thorn> one eastrising TFT is 10ms and needs 4 supply voltages, the other is 20ms and needs 3.3V+backlight
2014-02-15T19:01:52 < dongs> i had a old tek , TDS20xx or someshit, the TFT on there was nasty
2014-02-15T19:01:59 < dongs> or maybe TDS1xxx soemthign
2014-02-15T19:02:08 < dongs> horrible shadowing on everything and shitty contrast
2014-02-15T19:02:16 < dongs> might not have even been tft though, more ilke dstn or someshit
2014-02-15T19:02:34 < dongs> even rigol was better
2014-02-15T19:02:51 -!- prog [prog@airspy.com] has left ##stm32 ["blinky blinky blinky blinky blinky blinky ..."]
2014-02-15T19:03:31 < dongs> that guy was.. kinda asshole.
2014-02-15T19:04:00 < gxti> maybe
2014-02-15T19:04:08 < zyp> like everyone else here?
2014-02-15T19:04:10 < gxti> ^
2014-02-15T19:04:21 < GargantuaSauce> he was in good company
2014-02-15T19:04:33 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has joined ##stm32
2014-02-15T19:04:42 < gxti> everyone was trollin' and he didn't make any effort to endear himself to us, so that happened
2014-02-15T19:04:47 < Thorn> 429i-disco display specs: 150cd/m2, resp time 15Ms (sic)
2014-02-15T19:04:56 < dongs> megaseconds?
2014-02-15T19:05:03 < Thorn> must be
2014-02-15T19:05:08 < GargantuaSauce> takes 6 months to refresh
2014-02-15T19:05:18 < bvernoux> Thorn: 429disco LCD screen is really crappy screen
2014-02-15T19:05:19 < dongs> did you acutally calculate that
2014-02-15T19:05:40 < GargantuaSauce> if by calculate you mean typed "15 megaseconds in years" into google, yes
2014-02-15T19:05:47 < dongs> lul
2014-02-15T19:05:50 < Thorn> viewing angles: 45 horiz, 35/15 vert
2014-02-15T19:05:53 < dongs> i just did same into wolframalpha :(
2014-02-15T19:06:34 < dongs> they dont make any 320x240 ips screens
2014-02-15T19:06:38 < bvernoux> anyway for the price of 429i +LCD no one can complain about the LCD touch screen
2014-02-15T19:06:57 < zyp> dongs, are you sure?
2014-02-15T19:07:42 < zyp> touchscreens often use ips panels, since they don't get distorted by being touched
2014-02-15T19:07:51 < Thorn> at least angles are much better for eastrising stuff
2014-02-15T19:08:56 < dongs> zyp, eyah no idea, im sure they do
2014-02-15T19:09:04 < dongs> panelook lists a bunch of 320x240
2014-02-15T19:09:07 < dongs> too lazy to look through them
2014-02-15T19:09:26 < zyp> btw, what was it you said about that 27" 4k panel?
2014-02-15T19:09:40 < zyp> I forgot
2014-02-15T19:09:49 < dongs> yes
2014-02-15T19:09:55 < dongs> i can get them but moq is shitty.
2014-02-15T19:10:00 < zyp> 10, right?
2014-02-15T19:10:02 < dongs> right
2014-02-15T19:10:10 < dongs> and sample /ea is like 500-ish bux
2014-02-15T19:10:15 < dongs> which is bullshit.
2014-02-15T19:10:22 < zyp> I believe you said something about waiting a couple of months, but I forgot what you were going to wait for
2014-02-15T19:10:28 < dongs> right
2014-02-15T19:10:30 < dongs> mp is in amrch
2014-02-15T19:10:35 < dongs> march (according to supplier)
2014-02-15T19:10:39 < zyp> mp?
2014-02-15T19:10:41 < zyp> ah
2014-02-15T19:10:43 < dongs> massproduction
2014-02-15T19:10:48 < dongs> now its just sampling/dicking around
2014-02-15T19:11:34 < dongs> http://www.panelook.com/TX05D125VM0AAA_KOE_2.0_LCM_overview_12188.html
2014-02-15T19:11:51 < dongs> old shit
2014-02-15T19:11:57 < zyp> I guess it's pretty pointless to be in a hurry to get a 4k monitor now, considering how much competition there's going to be in the marked in a short while
2014-02-15T19:12:05 < dongs> right
2014-02-15T19:12:18 < dongs> i suspect in a few months you could just buy a proper monitor for <= 400-ish
2014-02-15T19:12:20 < dongs> using that same panel
2014-02-15T19:12:30 < dongs> i mean there's been several announecd already AT that price.
2014-02-15T19:14:42 < dongs> Thorn: looking at panelook for panels that do have the spec, 20-30ms is quite common for refresh.
2014-02-15T19:14:56 < dongs> er responsce time
2014-02-15T19:15:00 < Thorn> ok thanks
2014-02-15T19:15:22 < Thorn> eastrising forgot to specify current consumption @ 3.3V lol.
2014-02-15T19:15:36 < dongs> (for 320x240 panels i looked at)
2014-02-15T19:15:41 < dongs> higher rez stuff sems to be way better.
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2014-02-15T19:16:52 < Thorn> I flashed the moving logo sample into the 429 disco and there's quite a bit of smearing
2014-02-15T19:17:16 < dongs> hmm odd. going to 640x480 and responce halves
2014-02-15T19:18:19 < Thorn> and some kind of noise swimming through the blue parts of the image
2014-02-15T19:18:21 -!- Viper168 [~Viper@unaffiliated/viper168] has quit [Ping timeout: 272 seconds]
2014-02-15T19:20:14 < dongs> http://www.panelook.com/G070VW01%20V0_AUO_7.0_LCM_overview_793.html industrial application panel
2014-02-15T19:20:17 < dongs> this is waht you need dude.
2014-02-15T19:21:58 < dongs> why the hell im stil up
2014-02-15T19:22:02 < Thorn> how much
2014-02-15T19:22:21 < dongs> Thorn: im trolling, but its hte most popular 7" lcd there
2014-02-15T19:22:25 < dongs> with liek a million chinks selling it
2014-02-15T19:22:30 < dongs> its lvds, so you wont be able to use it anytway
2014-02-15T19:23:07 < Thorn> yes, they just don't list prices so it's not so easy to compare
2014-02-15T19:23:24 < dongs> usually if you ahve > 100 suppliers for something its cheap
2014-02-15T19:23:37 -!- Viper168 [~Viper@unaffiliated/viper168] has joined ##stm32
2014-02-15T19:25:26 < dongs> so what part of airspy does titanmkd do
2014-02-15T19:25:46 < dongs> posting it on hackaday?
2014-02-15T19:27:53 -!- Tectu [~Tectu@221-112.195-178.cust.bluewin.ch] has quit [Remote host closed the connection]
2014-02-15T19:32:00 < GargantuaSauce> ooh, shots fired
2014-02-15T19:42:03 < Steffanx> dongs, why you use his old nick?
2014-02-15T19:42:08 < Steffanx> he is known as bvernoux nowadays.
2014-02-15T19:45:54 -!- kuldeepdhaka [~kuldeepdh@unaffiliated/kuldeepdhaka] has quit [Ping timeout: 252 seconds]
2014-02-15T19:55:35 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has quit [Quit: This computer has gone to sleep]
2014-02-15T19:55:44 < Thorn> that nfc board also has a display http://www.eetimes.com/document.asp?doc_id=1320998&
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2014-02-15T20:12:06 -!- bvernoux [~Ben@chl26-1-88-183-104-56.fbx.proxad.net] has quit [Ping timeout: 260 seconds]
2014-02-15T20:18:14 < Thorn> Dave Jones a) is a certified fitness instructor b) wrote The Art of Internet Dating
2014-02-15T20:19:03 < Thorn> https://archive.org/download/TheArtOfInternetDating/Ebook-TheArtOfInternetDating.pdf
2014-02-15T20:19:08 < Steffanx> c) some aussie i dont care about
2014-02-15T20:24:46 -!- madist [~madist@unaffiliated/madist] has quit [Read error: Connection reset by peer]
2014-02-15T20:32:11 < beaky> hello
2014-02-15T20:34:02 < beaky> besides stm32f3, are there other stm32s with integrated analog comparators, opamps, high-res pwm, and fast ADC?
2014-02-15T20:34:47 < beaky> as well as integrated features (opamp outputs internally as ADC inputs, comparators wired to PWM break, pwm synchronised to opamp multiplexing)
2014-02-15T20:41:03 < Steffanx> beaky, go take a look at all the stm32 families
2014-02-15T20:41:14 -!- MrM0bius [~Joey@91.192.67.232] has quit [Ping timeout: 246 seconds]
2014-02-15T20:42:04 < beaky> btw what project are you doing with stm32?
2014-02-15T20:42:38 < beaky> or do you work at ST and designed the STM32? :D
2014-02-15T20:44:31 < beaky> i wonder if there are st engineers hanging out here
2014-02-15T20:45:10 < Steffanx> probably not.
2014-02-15T20:45:15 < Steffanx> or they never told us
2014-02-15T20:45:55 < beaky> who are probably either rolling on the floor laughing at my silly stm32f3-based smps, or gazing in horror :D
2014-02-15T20:45:56 < gnomad> Any ST engineer would see the drivel here and leave
2014-02-15T20:45:59 < beaky> lol
2014-02-15T20:47:06 < beaky> "haha this noob thinks he can design a digital smps with the stm32f3"
2014-02-15T20:47:35 < GargantuaSauce> i hope you aren't planning on having the micro IN the control loop
2014-02-15T20:47:37 < gnomad> that's not what I was referring to...
2014-02-15T20:47:40 < beaky> while prototyping the stm32f5 on their 20000 euro fpga
2014-02-15T20:47:41 < Steffanx> the problem is.. this noob even thinks he cant
2014-02-15T20:48:02 < beaky> GargantuaSauce: it is controlling all the loops
2014-02-15T20:48:03 < gnomad> GargantuaSauce: that is actually a very reasonable solution.  MicroChip has a few app notes on it.
2014-02-15T20:48:09 < beaky> even ST has appnotes on it
2014-02-15T20:48:20 < beaky> (though using STM32F1 iirc)
2014-02-15T20:48:53 < beaky> and some appnotes on specific functions related to power control on stm32f3 (such as using the analog comparators to perform current-mode control)
2014-02-15T20:49:00 < GargantuaSauce> my point isn't that it is infeasible, my point is are you confident enough in your programming and design to not write bugs that destroy hardware
2014-02-15T20:49:46 < gnomad> Beaky does seem to have progressed rather far since he first appeard on IRC...
2014-02-15T20:50:14 < Thorn> nice, buydisplay.com shipping is $53.78
2014-02-15T20:50:17 < gnomad> if he keeps up the pace and stays focused, he might have something someday.
2014-02-15T20:50:20 < beaky> surely my 6 months of C experience and 2 weeks of stm32 programming will not fail in something as mission-critical as a switch-mode power supply
2014-02-15T20:51:08 < beaky> (when i first started learning C i didnt imagine i would be doing anything like smps in C, now /join ##c and type ,rq beaky )
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2014-02-15T20:51:22 < Thorn> why the hell would you use a stm32 for a smps? is it some kind of multi-kW / specialized stuff?
2014-02-15T20:51:31 < beaky> no its just a batery charger for my 20W panel
2014-02-15T20:51:37 < beaky> smoke at worst
2014-02-15T20:51:45 < Steffanx> you should not be happy about this beaky
2014-02-15T20:51:53 < Steffanx> really, you shouldnt be proud of it
2014-02-15T20:52:39 < Ranewen> there's a great stm tuto if u wanna watch beaky
2014-02-15T20:52:58 < beaky> there is one?
2014-02-15T20:53:17 < Ranewen> beaky: there's is like the internet, which is alot actually
2014-02-15T20:53:28 < Ranewen> i can give you what i think is the best
2014-02-15T20:53:37 < beaky> wow i wanna see
2014-02-15T20:53:51 < Ranewen> youtube --> statemachineCOM
2014-02-15T20:54:26 < beaky> wow this is awesome tahnks for sharing
2014-02-15T20:54:39 < beaky> http://www.youtube.com/channel/UCMGXFEew8I6gzjg3tWen4Gw
2014-02-15T20:54:42 < Ranewen> it starts with the blinky
2014-02-15T20:54:51 < Ranewen> ends with stack overflows...
2014-02-15T20:55:57 < beaky> i didn't even know there was a modern methodology for microcontroller programming that went beyond state machines
2014-02-15T20:56:36 < Ranewen> beaky: which disco board you got ?
2014-02-15T20:56:41 < beaky> I got the STM32F3
2014-02-15T20:56:55 < Ranewen> so your into quad buisness..
2014-02-15T20:57:09 < beaky> quad business?
2014-02-15T20:57:39 < Ranewen> quadcopters
2014-02-15T20:57:57 < beaky> actualy i got it to control smps
2014-02-15T20:58:03 < Ranewen> smps stands for ?
2014-02-15T20:58:10 < beaky> switch-mode power supply
2014-02-15T20:58:26 < beaky> its high analog peripheral featureset will help so much in power control
2014-02-15T20:58:54 < beaky> analog comparators, opamps with programmable gain settings, DAC as vref, high-res PWM, fast ADC, DMA...
2014-02-15T20:59:52 < Ranewen> why dont you use of the shelf smps
2014-02-15T21:00:07 < beaky> sure there is the C2000 from TI and UCD series, energy micro, renesas, cypres psoc, dsPIC, and some others
2014-02-15T21:00:51 < beaky> using stm32f3, i could configure all the control parameters myself, as well as datamine it from ethernet.
2014-02-15T21:01:14 < beaky> even program multiple control loops
2014-02-15T21:01:30 < Ranewen> so much hate over a power-supply
2014-02-15T21:01:39 < Ranewen> go out, drink beer, have fun beaky
2014-02-15T21:03:07 < beaky> (btw has anyone used those other microcontrollers like c2000, ucd series, energy micro, renesas, cypres psoc (which is a CPLD i think), and dsPIC? how do they compare to stm32f3)
2014-02-15T21:03:27 < beaky> for such applications as digital power supply control
2014-02-15T21:03:58 < gnomad> Why so much hate in general on this channel?
2014-02-15T21:04:06 < Ranewen> hat ?
2014-02-15T21:04:07 < beaky> hate?
2014-02-15T21:04:17 < Steffanx> lol.. not just this one. Freenode gnomad
2014-02-15T21:04:31 < Ranewen> Steffanx: hate ?
2014-02-15T21:05:01 < gnomad> I'm on plenty of channels where there is no hate.
2014-02-15T21:05:04 < beaky> i think freenode is kinda friendly everyone supports me on everything
2014-02-15T21:05:05 < PaulFertser> I have to note this is the only channel I'm regular on which has this amount of trolling.
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2014-02-15T21:05:25 < Rickta59> hang in beagle some time PaulFertser
2014-02-15T21:05:39 < Ranewen> Rickta59: hey... u are the 430 guy
2014-02-15T21:06:11 < Rickta59> yeah i mess with them sometimes Ranewen
2014-02-15T21:06:19 < Steffanx> but in how many channels is mr d. as well PaulFertser / gnomad ? :P
2014-02-15T21:06:26 < Ranewen> u kiddin... u started the energia Rickta59
2014-02-15T21:06:31 < PaulFertser> Rickta59: I have no Cortex-A systems, eh.
2014-02-15T21:06:33 < Ranewen> i love energia <3
2014-02-15T21:06:36 < gnomad> Is #beagle subject to trolls?
2014-02-15T21:06:43 < PaulFertser> Steffanx: I'm on 9
2014-02-15T21:06:55 < Rickta59> they wouldn'
2014-02-15T21:06:57 < Steffanx> with mr D. and mr LB?
2014-02-15T21:07:08 < Rickta59> t call it that .. they consider they are doing the human race a favor
2014-02-15T21:07:19 < PaulFertser> Steffanx: eh, no, overally
2014-02-15T21:07:43 < Ranewen> Steffanx: is timecop (youtube) dongie ?
2014-02-15T21:07:47 < PaulFertser> Only this chan is common for us.
2014-02-15T21:08:01 < Steffanx> Ranewen, yes.
2014-02-15T21:08:11 < Ranewen> Steffanx: i fell of my chair watching his chanell
2014-02-15T21:08:16 < Steffanx> anyway, the trolling/hate is part of this channel nowadays. That wound change.
2014-02-15T21:08:21 < Steffanx> *wont
2014-02-15T21:08:25 < Ranewen> +1
2014-02-15T21:08:44 < Ranewen> Steffanx: when i first came here (like 1 year before), i got trolled so hard...
2014-02-15T21:08:51 < Ranewen> now i RTFM, and im good :)
2014-02-15T21:09:16 < PaulFertser> I luckily see no real hate her.
2014-02-15T21:09:39 < Steffanx> ( until jeri is the subject )
2014-02-15T21:09:41 < gnomad> good grief.
2014-02-15T21:10:42 < Thorn> or Mr. Arduino Shields
2014-02-15T21:10:55 < Steffanx> Hmm, who is that?
2014-02-15T21:11:04 < beaky> massimo banzi?
2014-02-15T21:11:22 < beaky> (one of the arduino proprietors)
2014-02-15T21:12:00 < Thorn> eastrising scammed me out of $50
2014-02-15T21:12:09 < Thorn> nice job
2014-02-15T21:15:28 < Thorn> still it looks cheaper than ebay
2014-02-15T21:36:35 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has quit [Read error: Operation timed out]
2014-02-15T21:36:56 < BrainDamage> retweeting: http://www.dafont.com/dictators.font?text=S+A
2014-02-15T21:37:09 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has joined ##stm32
2014-02-15T21:38:35 < Steffanx> because it's funny BrainDamage?
2014-02-15T21:40:01 < BrainDamage> because it's controversial, and people here typically appreciate it
2014-02-15T21:43:15 < Steffanx> ok
2014-02-15T21:47:02 < Thorn> I'm thinking about a GUI library with a somewhat android-like architecture
2014-02-15T21:48:02 < beaky> wow
2014-02-15T21:48:05 < Thorn> a stack of formats (defined in c/c++ code or some other way) & fragments (for partial "windows", overlapping formats)
2014-02-15T21:48:07 < beaky> will you drive a TFT lcd?
2014-02-15T21:48:51 < Thorn> formats will have fields and you can call update_fields(struct data*) when new data arrives
2014-02-15T21:50:00 < Steffanx> ugfx based? :P
2014-02-15T21:50:04 < Thorn> a "back" function is easy thanks to the stack
2014-02-15T21:50:07 < Thorn> no way
2014-02-15T21:50:29 < Thorn> beaky: yes, TFT
2014-02-15T21:50:42 < beaky> wow tft is awesome
2014-02-15T21:50:53 < Thorn> beaky are you doge
2014-02-15T21:50:54 < beaky> how will you make the data update asynchornosu
2014-02-15T21:55:39 < Thorn> why are embedded GUI libraries trying to copy ms windows anyway, there's not much point in multiple draggable/resizable windows with dynamic back/front ordering on a small display with a bad touchscreen (if any)
2014-02-15T21:56:20 < Thorn> copying smartphones seems much more reasonable
2014-02-15T21:56:33 < PaulFertser> tiling WMs ftw
2014-02-15T21:57:34 < Thorn> think oscilloscopes, cardiac monitors, glass cockpit displays, etc.
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2014-02-15T22:45:05 < Ranewen> http://www.youtube.com/watch?v=O83vd0l-_Ew
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2014-02-15T23:23:01 < gnomad> note that windows (display ports), hierarchies, and clipping, are standard elements of all graphics libraries.
2014-02-15T23:23:05 < mic555> Hello, Could anyone tell me what rcc stands for in the context of stm32 ?
2014-02-15T23:23:20 < gnomad> whether or not they are used as a part of the GUI is all up to the GUI designer.
2014-02-15T23:23:47 < Thorn> mic555: reset and clock control
2014-02-15T23:23:59 < mic555> Thank you very much. that will make it a lot easier to remember
2014-02-15T23:24:16 < Thorn> there's a chapter for it in the reference manual (or even 2 in rm0090)
2014-02-15T23:24:40 < mic555> i usualy only refer to the reference manual when i need to know memory maps, boot configs or special registers
2014-02-15T23:24:45 < mic555> guess it didnt came to mind to look for it there.
2014-02-15T23:25:26 < mic555> Also, i can recommend the baremetal plugin in qt + openocd for programming stm32 boards. I am liking it a lot more than eclipse or vim.
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2014-02-15T23:26:59 < Thorn> never got around to trying that stuff, I guess I should
2014-02-15T23:27:28 < Thorn> especially given that I code in qt creator anyway lol
2014-02-15T23:28:03 < mic555> The only problem i have with it , is that i cant interrupt a running program using the stop command in the debugger. You can send a kill -int if you find the pid with ps as a workaround though. its 1 bad thing but for the rest i have nothing but love for the baremetal plugin.
2014-02-15T23:29:13 < mic555> gtg . thanks Thorn
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2014-02-15T23:31:13 < Thorn> gnomad: I guess android is designed the way it is designed mostly to enforce consistency between apps, but there should be some merit in restricting what a GUI designer can do. e.g. writing a code generator would be easier if required
2014-02-15T23:33:11 < Thorn> I played a little with the emwin gui design tool that comes with the 429i-disco, it requires that you create a window to place your widgets into, and once you have a window the user can move/resize it etc.
2014-02-15T23:35:45 < gnomad> yes, that is a fundamental gfx lib property.
2014-02-15T23:37:03 < gnomad> if you wish to implement an android/iphone GUI, you simply create a window the size of your screen and work with that.
2014-02-15T23:37:46 < gnomad> note that all UI elements such as buttons are implemented as windows layered on top.
2014-02-15T23:38:13 < gnomad> a "window" at the gfx lib layer it not at all the same thing as a "window" at the GUI layer
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--- Day changed Sun Feb 16 2014
2014-02-16T00:02:27 < qyx_> speaking of gui
2014-02-16T00:02:37 < qyx_> wasnt there some minimalistic embedded port of qt?
2014-02-16T00:04:27 < Thorn> there was/is a vxworks port
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2014-02-16T01:10:09 < Thorn> I'm doing a small dev board, there's some free room and SPI pins. what do I add?
2014-02-16T01:12:19 < GargantuaSauce> 1024 shift registers
2014-02-16T01:13:14 < GargantuaSauce> more serious answer would be nrf24l01+ or another packet wireless soc
2014-02-16T01:13:59 < Thorn> that would require an antenna and stuff
2014-02-16T01:14:08 < zyp> most serious answer would be to just break it out to a footprint for a header
2014-02-16T01:14:29 < GargantuaSauce> the pcb-antennas on the chinamodules seem to be ok
2014-02-16T01:14:30 < zyp> if you don't need it for something specific, don't add something specific
2014-02-16T01:14:34 < GargantuaSauce> but yeah just breaking it out would be ideal
2014-02-16T01:15:09 < qyx_> Thorn: spi flash, microsd slot
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2014-02-16T01:16:52 < Thorn> is it ok to have a swastika-shaped Vcc trace
2014-02-16T01:17:33 -!- PaulFertser [paul@paulfertser.info] has quit [Ping timeout: 272 seconds]
2014-02-16T01:21:08 < Thorn> ok pin headers it is
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2014-02-16T01:41:33 < gxti> i still need to actually get some nrf modules working, i got the spi going but too lazy to keep going
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2014-02-16T01:47:14 < zyp> planning on using s110/s120 or plain radio directly?
2014-02-16T01:48:08 < gxti> whatever the proprietary magic is
2014-02-16T01:48:59 < gxti> i haven't completely internalized the manual yet
2014-02-16T01:50:17 < zyp> yeah
2014-02-16T01:50:29 < qyx_> https://vimeo.com/86778224
2014-02-16T01:50:30 < qyx_> \o/
2014-02-16T01:50:44 < zyp> btle has different roles, s110 is a peripheral stack, s120 is a central stack
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2014-02-16T02:08:26 < Thorn> qyx_: not very fun without solenoid valves connected
2014-02-16T02:08:43 < qyx_> not, but at least one-way night rider simulator
2014-02-16T02:10:18 < Thorn> what are those microchip ICs, i2c gpio expanders or something like that?
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2014-02-16T02:16:22 < qyx_> spi expanders, mcp23s17
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2014-02-16T02:22:06 < Thorn> why so many electrolytic caps btw?
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2014-02-16T02:26:15 < qyx_> i needed lower profile on some parts of the pcb
2014-02-16T02:26:47 < qyx_> and they are cheap non-low-esr types
2014-02-16T02:28:33 < qyx_> there is 300uF to keep the ripple sane on the output of the smps
2014-02-16T02:30:40 < qyx_> i packed 3 such boards vertically and there is only 10mm space between them
2014-02-16T02:31:29 < Thorn> I routinely put a linear reg after the switched one
2014-02-16T02:31:54 < qyx_> yep, the stm32 has its own 3.3vreg
2014-02-16T02:31:57 < Thorn> (well I normally need 2 supply voltages anyway)
2014-02-16T02:32:11 < qyx_> the expanders are powered by 4.5V directly from smps
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2014-02-16T02:46:32 < zyp> anyone done spi slave?
2014-02-16T02:47:39 < zyp> I need to know when receiving a byte whether it's the first byte since slave select was asserted or not
2014-02-16T02:48:21 < zyp> I'll be receiving/handling commands of varying length, and all commands start with slave select being asserted
2014-02-16T02:48:47 < zyp> so I'd like to know when to reset my state machine, what's the sanest way of doing that?
2014-02-16T02:49:04 < zyp> as far as I can see, there's no built in way of handling it
2014-02-16T02:51:40 < zyp> unless I can abuse the master/slave switching stuff in some way
2014-02-16T02:52:58 < zyp> doesn't look like there's a sane way of doing it either
2014-02-16T02:53:34 < zyp> maybe I just have to use EXTI on the SS line to trigger an interrupt
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2014-02-16T03:44:47 < Thorn> I have a net named SPARE_06 and a net named SPARE_06.
2014-02-16T03:45:12 < Thorn> they're not connected.
2014-02-16T03:45:25 < zyp> what application?
2014-02-16T03:46:40 < Thorn> Dongarm(r) Dicktrace(tm)
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2014-02-16T03:59:53 < Thorn> http://i.imgur.com/MQYLv9d.png
2014-02-16T04:03:50 < zyp> nice huge programming connector
2014-02-16T04:06:11 < zyp> rgb leds? why are they all wired in parallel?
2014-02-16T04:07:51 < zyp> J5/6 is CAN and J7 is RS485?
2014-02-16T04:08:38 < Thorn> H/L is CAN, A/B is RS-485
2014-02-16T04:08:54 < zyp> yes, that's what I said
2014-02-16T04:09:47 < Thorn> right
2014-02-16T04:10:01 < Thorn> and leds are wired in parallel by design (more leds = better)
2014-02-16T04:10:26 < zyp> normally more leds are better because then they can indicate more stuff :p
2014-02-16T04:10:50 < Thorn> it's to test lpc11 hardware pwm
2014-02-16T04:11:11 < zyp> so what's U4? a buffer?
2014-02-16T04:11:16 < Thorn> it can only do 6 channels
2014-02-16T04:11:22 < zyp> I thought it was a shift register
2014-02-16T04:11:51 < zyp> but now I see there's no power input
2014-02-16T04:11:52 < Thorn> U4 is a ULN2003 actually
2014-02-16T04:12:05 < zyp> right
2014-02-16T04:12:25 < Thorn> (input #7 is still unconnected even though output #7 is broken out)
2014-02-16T04:12:35 < zyp> what voltage is the purple rail? 5V?
2014-02-16T04:12:52 < Thorn> yes, 5V
2014-02-16T04:13:09 < Thorn> mcu needs both 5 and 3.3
2014-02-16T04:13:10 < zyp> why does the chip have a 5V input? for the can phy?
2014-02-16T04:13:52 < Thorn> that's correct
2014-02-16T04:14:26 < zyp> should have had an internal LDO too, then you could do away with lots of stuff
2014-02-16T04:15:39 < Thorn> TI makes 3.3V CAN phys so I guess NXP could have tried to make the builtin phy 3.3V
2014-02-16T04:16:05 < zyp> yes, but that gives you lower voltage differential
2014-02-16T04:16:23 < zyp> and you can probably run core and IO lower than 3.3V now
2014-02-16T04:16:46 < zyp> anyway, looks nice enough
2014-02-16T04:17:18 < zyp> what I would have done differently is smaller programming connector and smaller crystal
2014-02-16T04:17:49 < zyp> and I would get rid of most of the refdes from the silk
2014-02-16T04:17:55 < dongs> http://news.cnet.com/8301-1009_3-57618976-83/kickstarter-hacked-user-data-stolen/
2014-02-16T04:17:59 < dongs> lol
2014-02-16T04:18:11 < zyp> ya, they mailed me earlier
2014-02-16T04:18:15 < dongs> haha
2014-02-16T04:18:27 < dongs> i guess they only mailed people who gave money
2014-02-16T04:18:33 < dongs> i have a troll account w/o any backing
2014-02-16T04:18:53 < Thorn> I promise I'll use 1.27mm connectors once I manage to buy some lol
2014-02-16T04:19:16 < dongs> thorn, same named nets should work unless youre doing it wrong
2014-02-16T04:19:27 < dongs> maybe you unchecked 'connect by name'
2014-02-16T04:19:28 < zyp> I'm kinda annoyed I've managed to lose the clip thing for my tag-connect
2014-02-16T04:19:29 < dongs> for that net
2014-02-16T04:19:58 < Thorn> when you rename a net and use an existing name it pops a yes/no dialog, that time it just didn't
2014-02-16T04:20:03 < zyp> the tag-connect is pretty nice, but kinda useless for development work without the clip
2014-02-16T04:20:11 < dongs> clip = keeps it in place?
2014-02-16T04:20:25 < zyp> yes, it goes on the other side of the board and grips the three pins
2014-02-16T04:20:29 < dongs> oh
2014-02-16T04:20:44 < dongs> tag connect guy here must have i hten
2014-02-16T04:20:46 < dongs> it
2014-02-16T04:21:06 < dongs> cause ive seen it permanentnyl attached
2014-02-16T04:21:14 < zyp> http://www.tag-connect.com/TC2030-CLIP <- this shit
2014-02-16T04:21:16 < dongs> well, i mean without hagving to hold it
2014-02-16T04:21:28 < dongs> $6
2014-02-16T04:21:30 < dongs> what a fuckign rip
2014-02-16T04:21:35 < zyp> true
2014-02-16T04:21:38 < gxti> can you not afford $6 for a dev tool dongs?
2014-02-16T04:21:59 < zyp> $6 is fucking expensive for what it is
2014-02-16T04:22:02 < dongs> For a more robust solution consider a TC2030-MCP legged cable. goes to a 404
2014-02-16T04:22:09 < gxti> not really!
2014-02-16T04:22:09 < zyp> but affordable enough since I only need one
2014-02-16T04:22:28 < zyp> except I apparently need more than one, since I've managed to lose it
2014-02-16T04:22:30 < Thorn> btw are there ULN-like constant current buffers
2014-02-16T04:22:38 < dongs> oh
2014-02-16T04:22:40 < dongs> he has this http://www.tag-connect.com/TC2030-MCP
2014-02-16T04:22:44 < dongs> so it doesnt need crap on the back
2014-02-16T04:22:50 < gxti> yes, i didn't get that because it's fokken huge
2014-02-16T04:22:55 < zyp> yes, but that requires a larger footprint
2014-02-16T04:23:06 < dongs> those 4 holes right?
2014-02-16T04:23:10 < zyp> yes
2014-02-16T04:23:12 < dongs> thats waht ive seen on the boards.
2014-02-16T04:23:21 < zyp> I prefer the smaller footprint
2014-02-16T04:23:45 < zyp> the holes looks like they'll make routing the connector a hassle
2014-02-16T04:23:56 < zyp> and other signals around it
2014-02-16T04:25:02 < zyp> and if I'm designing a board that'll have a debugger that much connected, I'll just throw a normal connector on it instead
2014-02-16T04:25:28 < zyp> only problem right now is that I don't think I have any left that I could solder on this board here
2014-02-16T04:27:01 < dongs> i got a bag of like 100 unshrouded 1.277mm shits from chinks
2014-02-16T04:27:10 < dongs> i'm set for a while.
2014-02-16T04:28:00 < zyp> do they also have shrouded shit?
2014-02-16T04:28:12 < gxti> i just put down a 5 or 6 pin straight header, stlink style. it doesn't really take more room -- it's longer but not nearly as wide and it's going at the edge of the board anyway.
2014-02-16T04:28:13 < dongs> probly, i never asked
2014-02-16T04:29:01 < zyp> Thorn, I have only seen shift register constant current buffers
2014-02-16T04:29:14 < Thorn> me too
2014-02-16T04:29:14 < zyp> i.e. shift register led drivers
2014-02-16T04:29:26 < zyp> but that's fine, saves you even more pins
2014-02-16T04:29:56 < zyp> and there are also some with pwm, I remember dongs used them for rgb led matrices
2014-02-16T04:30:38 < zyp> so I'd just use one of those if I needed to run a bunch of leds
2014-02-16T04:31:49 < Thorn> well this particular exercise is to test timers in pwm mode
2014-02-16T04:32:31 < dongs> the guy who did maverickbird music makes some good shit
2014-02-16T04:32:32 < zyp> then you get to do everything the hard way ;)
2014-02-16T04:32:34 < Thorn> nxp timers are weird, they have no reload register and you have to use one of the channels to reload or something like that
2014-02-16T04:32:52 < Thorn> so 2 timers x 4 channels = 6 pwm channels
2014-02-16T04:33:00 < zyp> dongs, that's the same guy who did super hexagon, right?
2014-02-16T04:33:05 < dongs> unsure?
2014-02-16T04:33:47 < dongs> http://www.polygon.com/2014/2/12/5403828/super-hexagon-developer-creates-flappy-bird-tribute
2014-02-16T04:33:50 < dongs> yes
2014-02-16T04:34:09 < dongs> Thanks for the inspiration, Dong. Looking forward to your next game when things settle down!
2014-02-16T04:34:12 < dongs> lo'
2014-02-16T04:36:32 < zyp> hmm, same game programmer, different music guys apparently
2014-02-16T04:38:01 < dongs> yeah, i did say who did "maverickbird music"
2014-02-16T04:38:26 < zyp> saw that, I just assumed that music guy also might be the same
2014-02-16T04:40:13 < dongs> fuck
2014-02-16T04:40:14 < dongs> almost got to 6
2014-02-16T04:44:57 < zyp> http://corpsmoderne.itch.io/flappy-space-program <- if you're looking for something to waste time on, this is also fun
2014-02-16T04:45:14 < Thorn> so, via in through hole, we meet again
2014-02-16T04:45:58 < dongs> whats hte point? get the trash in orbit?
2014-02-16T04:46:10 < zyp> as many as possible at the same time
2014-02-16T04:46:19 < upgrdman> using a lookup table so my mcu doesnt have to do lots of math at runtime. the table is used to convert from linear to exponential. i would like to be able to change the exponent easily. right now i edit some code, generate the table, then copy'n'paste. surely theres an automated way to do this?
2014-02-16T04:46:44 < zyp> I think I got up to 7 when I tried
2014-02-16T04:46:44 < dongs> i dont get it
2014-02-16T04:46:47 < dongs> i keep dying
2014-02-16T04:46:49 < dongs> waat
2014-02-16T04:47:46 < dongs> i cant undderstand what im supposed to do
2014-02-16T04:48:33 < dongs> am i supposed to make them orbit eaxctly on that outer circle?
2014-02-16T04:48:41 < zyp> no, you're supposed to avoid that
2014-02-16T04:48:50 < dongs> lul
2014-02-16T04:48:50 < dongs> ok
2014-02-16T04:48:51 < zyp> you need to keep your orbit lower than the circle
2014-02-16T04:48:57 < dongs> yeah ok i finally got one
2014-02-16T04:48:59 < dongs> kk
2014-02-16T04:49:06 < zyp> yeah, that's the easy part
2014-02-16T04:49:11 < zyp> the hard part is when they start colliding
2014-02-16T04:49:47 < dongs> fuck
2014-02-16T04:50:59 < dongs> score
2014-02-16T04:51:04 < dongs> got 2 in orbit
2014-02-16T04:51:49 < zyp> I had 5, just got reduced to 3
2014-02-16T04:52:19 < dongs> wtf
2014-02-16T04:52:21 < dongs> they just collied
2014-02-16T04:52:34 < zyp> told you so
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2014-02-16T05:10:58 < Thorn> upgrdman: you can write a script that would generate a .c file directly and add a make rule to call the script when it (or its input file) changes
2014-02-16T05:11:12 < Thorn> (if I got your question right)
2014-02-16T05:11:26 < upgrdman> ya. ok
2014-02-16T05:12:54 < upgrdman> i wonder if any IDEs make this trivial (doing everything for you... you feed it a formula. done.)
2014-02-16T05:13:13 < upgrdman> at least it would be a neat feature :)
2014-02-16T05:14:09 < zyp> why would you need an IDE for it? a script that could do it would be easy enough
2014-02-16T05:14:23 < upgrdman> sure, and that's what i'll do
2014-02-16T05:14:51 < upgrdman> but it would be nice to just tell an ide "make a lookup table of size n for y=x^1.2" or whatever
2014-02-16T05:16:07 < zyp> I wonder if you couldn't actually get the compiler to do it
2014-02-16T05:16:27 < upgrdman> that would be neat
2014-02-16T05:16:35 < zyp> just through constant folding
2014-02-16T05:17:23 < upgrdman> that's what i did. wrote a .c that outputs a file with the array def
2014-02-16T05:17:35 < upgrdman> then my firmware #include's it
2014-02-16T05:17:37 < zyp> http://lolengine.net/blog/2011/12/20/cpp-lookup-table-generation
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2014-02-16T06:06:40 < dongs> duno if they're signed
2014-02-16T06:06:42 < dongs> i would hope so
2014-02-16T06:06:45 < dongs> for $99/board
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2014-02-16T06:07:30 < dongs> lol..
2014-02-16T06:07:32 < dongs> not signed
2014-02-16T06:07:58 < dongs> lol waht thefuck
2014-02-16T06:08:04 < dongs> it comes with libusb and some OLD usbser.sys???!@#?!@#?
2014-02-16T06:08:25 < dongs> and usbser has no digital signature either which all microsoft drivers do...
2014-02-16T06:08:29 < dongs> sounds fishy
2014-02-16T06:08:45 < dongs> R2COM: does it even work on win7?
2014-02-16T06:08:54 < dongs> or do you get a unsigned continue warning
2014-02-16T06:09:56 < dongs> libusb is signed but neither usbser or blackmagic.inf
2014-02-16T06:09:59 < dongs> so that wont work on win8
2014-02-16T06:10:04 < dongs> will be ok on win8
2014-02-16T06:10:08 < gxti> only on windows would you need signed drivers to use a USB CDC class-compliant device
2014-02-16T06:10:21 < dongs> gxti, it keeps retards out
2014-02-16T06:10:32 < gxti> it's signing a friggin ini file
2014-02-16T06:10:36 < dongs> yes and?
2014-02-16T06:10:54 < gxti> you need permission to use the driver microsoft is already shipping
2014-02-16T06:11:01 < gxti> daddy bill needs to rubber stamp it
2014-02-16T06:11:07 < dongs> no problem
2014-02-16T06:11:12 < gxti> and squeeze a few bucks out
2014-02-16T06:11:22 < gxti> completely pointless
2014-02-16T06:11:42 < Thorn> dongs: it works on 7
2014-02-16T06:11:49 -!- [7] [~quassel@rockbox/developer/TheSeven] has quit [Disconnected by services]
2014-02-16T06:11:59 < dongs> Thorn: right, with a fat warning about unsigned shit
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2014-02-16T06:12:04 < dongs> which  you can't skip in 8
2014-02-16T06:12:30 < dongs> Interface to the host computer is a standard USB CDC ACM device (virtual serial port), which does not require special drivers on Linux.
2014-02-16T06:12:33 < dongs> "on lunix"
2014-02-16T06:12:36 < dongs> haah
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2014-02-16T06:12:42 < Thorn> l00nex
2014-02-16T06:13:26 < gxti> real pros install whatever random shit they downloaded from the internet, code signatures are just obstacles
2014-02-16T06:13:33 < dongs> http://www.tag-connect.com/images/BSD/IMG_3220.jpg
2014-02-16T06:13:36 < dongs> shitty smt OSB
2014-02-16T06:13:38 < dongs> USB
2014-02-16T06:13:57 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has quit [Ping timeout: 248 seconds]
2014-02-16T06:17:41 < Thorn> http://i.imgur.com/uaqABpM.png silkscreen is off
2014-02-16T06:19:07 < dongs> ugly thermals on gnd pour
2014-02-16T06:19:13 < dongs> where you added erxtra traces
2014-02-16T06:19:25 < dongs> bottom left pin
2014-02-16T06:19:31 < dongs> 3 pins above
2014-02-16T06:19:32 < dongs> etc
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2014-02-16T06:20:05 < Thorn> wait L2 pour has no thermals at all
2014-02-16T06:20:18 < dongs>         htat too
2014-02-16T06:21:27 < dongs> is tehre soem dc/dc wankery going on
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2014-02-16T06:29:26 < Thorn> mcp16301 + spx3819
2014-02-16T06:36:55 < Thorn> diptrace authors should patent their via-in-through-hole technology. much cooler than via-in-pad
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2014-02-16T09:32:55 < dongs> R2COM: right, wont work on 8 then
2014-02-16T09:33:08 < dongs> bmp is officially obsolete
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2014-02-16T09:57:59 < dongs> definitely.
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2014-02-16T10:28:33 < fbs> qdid they also make it impossible to install unsigned drivers in safe mode?
2014-02-16T10:36:51 < dongs> fbs,  you have to press F8 or someshit
2014-02-16T10:36:54 < dongs> on each reboot
2014-02-16T10:36:56 < dongs> to disable signature check
2014-02-16T10:37:06 < dongs> on win7, if .sys was signed but .inf wsnt its ok
2014-02-16T10:37:10 < dongs> on 8, both need to be signed
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2014-02-16T10:48:38 < dongs> i just renewed my verisign kernel signing shit  for 3 years, they for some reason allowed me to keep amazing $99/year deal and it was even cheaper for 3 year
2014-02-16T10:48:50 < dongs> so it was something like 250bucks
2014-02-16T10:48:56 < dongs> where normal /year price is usally 400
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2014-02-16T11:31:49 < fbs> each reboot? damn
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2014-02-16T11:34:43 < Robint91> hi all
2014-02-16T11:34:51 < Robint91> and what is going on here?
2014-02-16T11:37:06  * madist was inspecting his penis for smegma
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2014-02-16T12:11:43 < dongs> http://vimeo.com/77882662
2014-02-16T12:11:48 < dongs> fbs: yes
2014-02-16T12:11:57 < fbs> lol thats horrid
2014-02-16T12:12:13 < dongs> thats why I would generally not buy hardware from companies that cant sign their own shit
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2014-02-16T12:12:59 < fbs> uhu
2014-02-16T12:13:36 < fbs> but just installing in safemode is bad enough, microsoft should have kept it that way
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2014-02-16T12:47:17 < dongs> safe mode? what happens if you reboot to normal?
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2014-02-16T13:28:05 < fbs> with win7 unsigned drivers kept working
2014-02-16T13:29:20 < fbs> you reboot into safemode with driver verification turned off, install your driver and shit works
2014-02-16T13:29:26 < fbs> did you try http://www.howtogeek.com/167723/how-to-disable-driver-signature-verification-on-64-bit-windows-8.1-so-that-you-can-install-unsigned-drivers/ ?
2014-02-16T13:35:03 < dongs> why the fuck would I do that ?
2014-02-16T13:35:15 < dongs> i can sign drivers myself, the point is that so should a reputable vendor
2014-02-16T13:37:09 < fbs> oh
2014-02-16T13:38:53 < fbs> doesnt it cost a ton of money to do it the official way
2014-02-16T13:39:47 < dongs> 17:48 < dongs> i just renewed my verisign kernel signing shit  for 3 years, they for some reason allowed me to keep amazing $99/year deal and it was even cheaper for 3 year
2014-02-16T13:39:51 < dongs> 17:48 < dongs> where normal /year price is usally 400
2014-02-16T13:40:49 < fbs> ah
2014-02-16T13:40:51 < fbs> lel
2014-02-16T13:41:01 < dongs> it ended up being 250bucks for 3 years
2014-02-16T13:41:07 < dongs> so totally worth it.
2014-02-16T13:41:39 < fbs> yea
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2014-02-16T15:52:09 < zyp> hmm, slave SPI is annoying
2014-02-16T15:53:08 < zyp> looks like there's no way to throw away bytes already put into txfifo
2014-02-16T15:56:15 < zyp> I bet doing slave I2C would be less annoying than this
2014-02-16T15:56:36 < dongs> you did slave i2c alread y:)
2014-02-16T15:57:02 < zyp> yeah, that was bitbang
2014-02-16T15:57:27 < zyp> hmm, I could almost just bitbang this, it's only 250 kHz
2014-02-16T15:59:33 < dongs> attn http://www.stm32-sdr.com/resources/STM32-SDR.pdf
2014-02-16T15:59:43 < qyx_> another one?
2014-02-16T16:00:39 < dongs> its a standalone one :)
2014-02-16T16:01:08 < dongs> i think he listens on linein from some other receiver and just displays shit
2014-02-16T16:01:10 < dongs> sounds useless.
2014-02-16T16:01:26 < dongs> http://www.stm32-sdr.com/styled/index.html
2014-02-16T16:02:50 < qyx_> the 3.5 jacks are probably for mic & headphones
2014-02-16T16:02:56 < dongs> ya
2014-02-16T16:02:59 < qyx_> there are i/q inputs and outputs
2014-02-16T16:04:18 < qyx_> RXTX6.3 or 6.3NG or an Ensemble RXTX or UHFSDR
2014-02-16T16:04:29 < qyx_> so it requires sdr frontend
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2014-02-16T16:58:49 < dongs> holy cocks
2014-02-16T16:59:02 < dongs> my single button handling code is fucking nasty
2014-02-16T16:59:09 < dongs> im sure it cna be reweritten 10x easier
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--- Day changed Mon Feb 17 2014
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2014-02-17T00:41:45 < bvernoux> for those interested by hydrabus and hydranfc hw my webpage is now open ;)
2014-02-17T00:41:50 < bvernoux> hydrabus.com
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2014-02-17T02:23:53 < dongs> lol seedstdio pcbs
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2014-02-17T02:42:38 < Thorn> what about seeedstudio pcbs
2014-02-17T02:43:07 < Thorn> I'm looking at their specs and can't find anything about annular ring size http://www.seeedstudio.com/service/index.php?r=st/specification#pcb
2014-02-17T02:43:32 -!- amstan [~alex@aichallenge/admin/amstan] has quit [Ping timeout: 252 seconds]
2014-02-17T02:45:18 < dongs> finally a use for 3d pritners http://thepiratebay.se/torrent/8914634/The_3D_dildo
2014-02-17T02:45:42 < Thorn> (I've ordered boards with annular diameter = 0.8mm from them before, maybe they can do better than that)
2014-02-17T02:45:59 < dongs> via?
2014-02-17T02:46:09 < Thorn> yes
2014-02-17T02:46:23 < Thorn> http://seeedstudio.com/forum/download/file.php?id=1680&sid=1195619844368e2b2d67cdaca32f16e8
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2014-02-17T02:46:48 < dongs> your board?
2014-02-17T02:46:49 < Thorn> (not my boards lol)
2014-02-17T02:46:51 < dongs> o
2014-02-17T02:46:56 < dongs> i was gonna say
2014-02-17T02:47:00 < dongs> whats wiht the soviet boat
2014-02-17T02:47:08 < Thorn> someone from .ru
2014-02-17T02:48:01 < Thorn> the mfg put their order number onto the boat lol
2014-02-17T02:48:14 < dongs> haha
2014-02-17T02:51:58 < qyx_> btw seeed boards are okay
2014-02-17T02:52:35 < qyx_> i am now ordering from them regularly when i want a cheaper alternative to our local fab
2014-02-17T02:53:48 < dongs> do tehy still drill like drunks?
2014-02-17T02:54:21 < qyx_> wait
2014-02-17T02:54:30 < dongs> show me something you g ot from tehm ~recently
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2014-02-17T02:54:35 < Thorn> multiple complaints about delayer orders http://seeedstudio.com/forum/viewforum.php?f=9
2014-02-17T02:54:45 < Thorn> is it due to the chinese new year?
2014-02-17T02:54:48 < dongs> lol feb17
2014-02-17T02:54:49 < dongs> yes of course
2014-02-17T02:54:57 < Thorn> ok
2014-02-17T02:55:01 < qyx_> yxep, china newyear
2014-02-17T02:55:05 < qyx_> they had a warning about that
2014-02-17T02:55:13 < qyx_> about two weeks before
2014-02-17T02:55:49 < dongs> oh god
2014-02-17T02:55:51 < dongs> tehy use singpost
2014-02-17T02:55:58 < dongs> thats +3 months to get anywhere
2014-02-17T02:56:28 < qyx_> it takes about 7-14 days to slovakia
2014-02-17T02:58:43 < qyx_> http://i.imgur.com/QjFvuDdh.jpg
2014-02-17T02:59:02 < dongs> seems drills are better now
2014-02-17T02:59:37 < qyx_> these are 0.3mm
2014-02-17T03:01:21 < Thorn> should you isolate ground around a dc/dc converter and connect it to the rest of the pcb in one place only?
2014-02-17T03:02:21 < Thorn> I remember the L5973D datasheet recommended that but datasheets/appnotes for other chips don't seem to
2014-02-17T03:03:35 < qyx_> some suggest that, i tend to place converters in the one corner only
2014-02-17T03:03:43 < qyx_> so probbaly it doesnt matter much if isolated or not
2014-02-17T03:04:36 < qyx_> i used to do that with l5973d sometimes
2014-02-17T03:07:09 < dongs> too many parts
2014-02-17T03:07:31 < dongs> if youre gonna use that many parts, get RT7257 for 1/10th the price
2014-02-17T03:07:31 < qyx_> on the left? there are two switchers and liion charger
2014-02-17T03:07:39 < dongs> no i mena l5973d
2014-02-17T03:07:50 < qyx_> hm, just 5 passives, diode and inductor
2014-02-17T03:08:01 < qyx_> and capacitors
2014-02-17T03:08:19 < dongs> less for RT, no diode
2014-02-17T03:09:11 < dongs> and way better switchign freq
2014-02-17T03:09:15 < dongs> so smaller coils, etc
2014-02-17T03:10:52 < dongs> and price wtf
2014-02-17T03:10:58 < qyx_> meh, the same amount of passives
2014-02-17T03:11:05 < qyx_> also inductor value is the same
2014-02-17T03:11:13 < dongs> $3 vs $0.93 in single qtys
2014-02-17T03:11:13 < qyx_> but diode
2014-02-17T03:11:29 < Thorn> why the hell vias don't remember net assignments when you copy/paste them
2014-02-17T03:11:36 < dongs> why teh hell would they
2014-02-17T03:11:42 < qyx_> and vin max 18 only :S
2014-02-17T03:11:45 < Thorn> (I mean static vias)
2014-02-17T03:11:45 < qyx_> but the price is better
2014-02-17T03:11:51 < dongs> qyx_: ya not a problem for me
2014-02-17T03:11:54 < dongs> Thorn: right, why would they
2014-02-17T03:12:03 < dongs> if youre   doing them in ground pour
2014-02-17T03:12:07 < dongs> just place a shitload
2014-02-17T03:12:14 < dongs> then edit->edit selection->vias unconnected
2014-02-17T03:12:18 < dongs> then right click and connectselected to net
2014-02-17T03:12:19 < dongs> done
2014-02-17T03:13:00 < Thorn> you have to do that many times, e.g. right now I'm adding more vias around the switcher to try and minimize ground loops
2014-02-17T03:13:15 < Thorn> after I did the general stitching
2014-02-17T03:13:43 < dongs> Thorn: http://xn--d-bga.su/dial.gif
2014-02-17T03:19:07 < upgrdman> lol
2014-02-17T03:19:27 < dongs> i kno rite??
2014-02-17T03:19:41 < upgrdman> srsly
2014-02-17T03:20:41 < zyp> altium is also kinda annoying when placing vias in ground pour
2014-02-17T03:21:24 < qyx_> eagle also :X
2014-02-17T03:21:28 < zyp> it's all «placing it here will cause a clearance error» and highlights the entire pour
2014-02-17T03:21:40 < zyp> and then you place it and it goes «oh, ok»
2014-02-17T03:22:14 < zyp> qyx_, I'd say eagle handles it pretty well
2014-02-17T03:22:19 < Thorn> feature request: default net for static vias
2014-02-17T03:22:31 < qyx_> zyp: yep, when you copy them
2014-02-17T03:22:38 < zyp> qyx_, no, placing them
2014-02-17T03:23:25 < zyp> qyx_, if you do «via 'gnd'» in the command window, they will come out as gnd vias
2014-02-17T03:23:46 < qyx_> hm, should try
2014-02-17T03:27:36 < Thorn> ok gerber time I guess
2014-02-17T03:29:55 < dongs> pix
2014-02-17T03:30:16 < zyp> dix
2014-02-17T03:31:01 < dongs> dix pis is ok too
2014-02-17T03:31:03 < dongs> er pix
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2014-02-17T03:49:52 < Thorn> http://imgur.com/a/cUt6Z
2014-02-17T03:51:26 < zyp> you should still consider removing the rest of the irrelevant component labels
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2014-02-17T03:52:20 < Thorn> seeed does solde rmask for free so why not, makes assembly easier
2014-02-17T03:53:03 < Thorn> (well not free but at no extra cost)
2014-02-17T03:53:10 < zyp> you mean silk, not solder mask
2014-02-17T03:53:18 < Thorn> eh right
2014-02-17T03:53:21 < zyp> and yes, of course they do, everyone does
2014-02-17T03:53:41 < Thorn> lol http://rezonit.ru/ doesn't
2014-02-17T03:53:48 < zyp> that still doesn't change the fact that it just looks messy and not very useful
2014-02-17T03:54:03 < zyp> I'm talking about boardhouses worth using
2014-02-17T03:56:14 < zyp> also looks like some of your bottom routing could be simplified
2014-02-17T03:58:04 < dongs> that silk looks almost like a tom666 board
2014-02-17T03:59:21 < Thorn> almost ordered PCB assembly from seeed lol. I shouldn't do this stuff at 5am lol
2014-02-17T04:00:14 < Thorn> oh look they now let you continue shopping after uploading a project
2014-02-17T04:02:40 < qyx_> btw speaking of switchers
2014-02-17T04:04:17 < qyx_> http://www.digikey.com/product-detail/en/SIC403ACD-T1-GE3/SIC403ACD-T1-GE3CT-ND/3881293
2014-02-17T04:06:23 < zyp> heh, split bottom pad
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2014-02-17T04:07:02 < qyx_> but 6A sync for that price
2014-02-17T04:08:14 < qyx_> IR3476 is even more intersting
2014-02-17T04:09:06 < Thorn> zyp: that top left trace on the bottom goes arount the xtal
2014-02-17T04:11:31 < zyp> why not go directly down from the mcu? would also keep it away from the crystal
2014-02-17T04:12:23 < Thorn> oh you probably mean TXD and RXD
2014-02-17T04:12:46 < zyp> hmm?
2014-02-17T04:14:11 < Thorn> the 2 traces that go up from the mcu and then left to a pin header, then to a rs-485 driver. they can be moved to the bottom
2014-02-17T04:14:29 < zyp> that's not what I meant
2014-02-17T04:14:46 < zyp> I meant the trace on the bottom that you said goes around the crystal
2014-02-17T04:15:34 < zyp> it comes down through a via underneath the microcontroller, and then you run it leftwards
2014-02-17T04:15:40 < zyp> instead of downwards
2014-02-17T04:16:05 < Thorn> oh ok it's RS485_DIR
2014-02-17T04:16:10 < zyp> sure
2014-02-17T04:16:51 < zyp> but more importantly I'd try to leave enough room between that via and the via next to it to keep a ground plane connection between them
2014-02-17T04:18:39 < Thorn> right, fixed it
2014-02-17T04:22:38 < Thorn> thanks
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2014-02-17T05:15:49 < Thorn> any recommendations about a cheap spartan-6 dev board (besides papilio pro)?
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2014-02-17T06:02:05 < dongs> thorn, how about some buttcoin miner shit
2014-02-17T06:02:12 < dongs> those usually have a few spartan chips on them ;p
2014-02-17T06:02:19 < dongs> and used ones should be practically free on ebay
2014-02-17T06:02:24 < dongs> since you cant use them to make any profit anymore
2014-02-17T06:03:06 < dongs> ohh
2014-02-17T06:03:08 < dongs> wavesahre has some
2014-02-17T06:03:24 < dongs> http://www.ebay.com/itm/390637848029 shit like this
2014-02-17T06:03:53 < dongs> http://www.ebay.com/itm/231092874536 even better
2014-02-17T06:04:34 < dongs> http://www.ebay.com/itm/291006137579 with sdram
2014-02-17T06:04:58 < Thorn> bitcoin miners won't have any peripherals or breakout headers will they
2014-02-17T06:05:10 < dongs> Thorn: haha, yeah, generally no
2014-02-17T06:05:14 < dongs> just SPI and a couple IO pins
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2014-02-17T06:07:52 < Thorn> dong_dt?
2014-02-17T06:09:22 < Thorn> this is interesting http://www.ebay.com/itm/Expansion-Board-with-USB-Sound-Ethernet-SD-Card-VGA-CY7C68013A-DM9000A-WM8731-/300841001726
2014-02-17T06:09:53 < Thorn> lots of stuff for $32
2014-02-17T06:10:31 < Thorn> $50+32=$82, cheaper than bare papillio pro
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2014-02-17T06:11:05 < Thorn> well + xilinx programmer clone but I'd need it anyway
2014-02-17T06:11:10 < Thorn> thanks for the find
2014-02-17T06:11:56 < dongs> nice
2014-02-17T06:12:07 < dongs> yeah xilinx propgramming usb clone should be 10-20bux mas
2014-02-17T06:12:09 < dongs> max
2014-02-17T06:13:28 < Thorn> (and he has a cyclone IV board with the same form factor)
2014-02-17T06:13:32 < dongs> yep
2014-02-17T06:21:58 < emeb_mac> got one of these the other day: http://digilentinc.com/Products/Detail.cfm?NavPath=2,400,1198&Prod=ZYBO
2014-02-17T06:23:15 < dongs> pertty sure it wasnt $35 either
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2014-02-17T06:24:06 < Thorn> looks pretty cheap for what it is
2014-02-17T06:24:13 < dongs> didnt you just make some xilinx devboard
2014-02-17T06:24:17 < dongs> why you gotta buy oen
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2014-02-17T06:25:40 < emeb_mac> lot of stuff on there. main chip is a fairly dense BGA. no way I'm going to be able to build that.
2014-02-17T06:26:27 < emeb_mac> I signed up for that early - back in August last year, so I got it for $149. Price went up since then.
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2014-02-17T08:48:41 < Thorn> is cubieboard2 worth it?
2014-02-17T08:50:13 < PaulFertser> For multimedia playback -- probably not, I was told raspberrypi works okish for movie playback, while there's too little hw acceleration available on cubieboard. In every other regard -- I think yes, cubie seems to be a very nice board.
2014-02-17T08:50:31 < Thorn> the specs and interfaces look good
2014-02-17T08:50:47 < Thorn> I don't think I'll need it to play movies
2014-02-17T08:52:40 < Thorn> any gotchas like an ethernet interface connected to usb or something like that? (besides an undocumented SoC that it's built on)
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2014-02-17T08:57:20 < Thorn> http://devdotnet.org/post/2013/06/12/Vosstanovlenie-nerabochego-Ethernet-interfejsa-na-Cubieboard.aspx
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2014-02-17T09:14:29 < dongs> http://i.imgur.com/nNvbkEv.png
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2014-02-17T09:29:23 < Thorn> looks like cubieboard has 2.0mm pin headers. wtf.
2014-02-17T09:32:37 < dongs> it does
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2014-02-17T10:02:32 < GargantuaSauce> performance seems pretty ok overall
2014-02-17T10:03:26 < GargantuaSauce> you can actually get media playback to work with their hw acceleration apis in certain software with some finagling PaulFertser
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2014-02-17T10:12:06 < PaulFertser> GargantuaSauce: http://linux-sunxi.org/CedarXVideoRenderingChart ?
2014-02-17T10:12:58 < GargantuaSauce> yup
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2014-02-17T10:16:48 < dongs> http://edition.cnn.com/2014/02/16/justice/craigslist-thrill-killing-confession/ lolwat
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2014-02-17T10:49:08 < Thorn> are there even jumper wires that work with 2.0mm pin headers
2014-02-17T10:51:54 < dongs> no clue
2014-02-17T10:52:02 < dongs> when i was using cubiebored i just made a pcb with 2mm headers on it
2014-02-17T10:52:05 < dongs> and routed out stuff I needed to use.
2014-02-17T10:54:14 < Thorn> somebody's already selling crap like that
2014-02-17T10:54:19 < dongs> yep
2014-02-17T10:54:26 < dongs> i needed custom stuff with CSI/TS interface.
2014-02-17T10:54:33 < dongs> figured might as well just make my own.
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2014-02-17T10:54:43 < Thorn> O see
2014-02-17T10:54:47 < Thorn> *I
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2014-02-17T11:00:24 < madisc> is there any ARM mcu that runs at 5V ?
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2014-02-17T11:13:57 < zyp> silabs sim3 series have an internal regulator
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2014-02-17T11:31:07 < madisc> i should just buy a level converter
2014-02-17T11:32:08 < gnomad> there are plenty that have 5v capable I/Os....
2014-02-17T11:32:50 < madisc> 5V tolerant is not the same as being able to talk to a TTL device, is it ?
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2014-02-17T11:33:41 < zyp> depends
2014-02-17T11:33:50 < madisc> depends on ?
2014-02-17T11:33:54 < zyp> 5V tolerant means that it's able to tolerate 5V on
2014-02-17T11:33:55 < zyp> in
2014-02-17T11:34:05 < zyp> but it'll still only source 3.3V out
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2014-02-17T11:34:43 < zyp> so what you can talk to depends what the lowest high input voltage of the device you're talking to is
2014-02-17T11:35:02 < madisc> hmm
2014-02-17T11:35:07 < zyp> actual TTL is like 2V or so, so you should be fine there
2014-02-17T11:35:44 < zyp> but 5V CMOS may require 0.7*5V, and then you might have problems
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2014-02-17T13:32:58 < karlp> is there some arm register that says how many bits of nvic priority is implemented?
2014-02-17T13:33:26 < karlp> I can see that stm32 uses 4 bits, but it's a vendor option, and I can't see where in the cortex TRM there's a way to read out how many bits are implemented
2014-02-17T13:35:49 < zyp> I believe so
2014-02-17T13:41:08 < zyp> hmm, maybe not, can't find it, just a register containing number of interrupts in the NVIC implementation
2014-02-17T13:42:23 < karlp> yeah, that's all I can find too.
2014-02-17T13:42:34 < karlp> and "note, the numbe rof bits is implementation defined"
2014-02-17T13:42:41 < karlp> seems odd to not be able to read that out
2014-02-17T13:43:06 < karlp> this is why my nested interrupts weren't working last week, I was using "priorities" of 1-6,
2014-02-17T13:43:09 < karlp> not 1-6 << 4
2014-02-17T13:43:27 < zyp> should be easy enough to deduce anyway, just write 0xff and read it back, I assume unimplemented bit always read as 0
2014-02-17T13:43:46 < karlp> yeah, just seems odd.
2014-02-17T13:44:07 < zyp> well, what would you do with the knowledge?
2014-02-17T13:44:22 < karlp> do the shift internally to the right place :)
2014-02-17T13:44:35 < zyp> oh
2014-02-17T13:44:36 < karlp> but I'm not sure if that's a good idea either
2014-02-17T13:44:39 < zyp> no
2014-02-17T13:44:45 < zyp> you're thinking of it completely wrong
2014-02-17T13:44:50 < karlp> I just had an enum with my irqs in prioirties order
2014-02-17T13:44:55 < karlp> yeah, I think I might be
2014-02-17T13:45:45 < karlp> the notes were like, "lower prioritie numbers are higher" so I just had an enum with ordere3d irqs, but that was 0,1,2,3...
2014-02-17T13:45:46 < zyp> think of the priority as the digits after the decimal point, from 0-1
2014-02-17T13:46:09 < zyp> .00 would be lowest priority and .ff is highest
2014-02-17T13:46:19 < zyp> and split them over that range into as many as you need
2014-02-17T13:46:28 < karlp> what?
2014-02-17T13:47:04 < zyp> hmm, I guess I swapped high/low
2014-02-17T13:47:19 < zyp> been a while since I read up on this ;)
2014-02-17T13:47:26 < karlp> the priorities are just integers << 4.
2014-02-17T13:47:32 < zyp> but anyway, say you need four priorities
2014-02-17T13:47:42 < karlp> the sub/grouping doesn't really seem to do much of anything as far as I can tell
2014-02-17T13:48:00 < zyp> those should then logically be 00, 40, 80 and c0
2014-02-17T13:48:16 < karlp> no, _physically_ they should be 00, 40, 80 and c0
2014-02-17T13:48:21 < karlp> logically they're just 1,2,3,4
2014-02-17T13:48:27 < karlp> or 0,1,2,3 or whatever
2014-02-17T13:48:39 < karlp> that's what I find weird and wanted to not have to think about
2014-02-17T13:48:49 < zyp> well, to put it in decimal terms, my numbers would be 0.00, 0.25, 0.50 and 0.75
2014-02-17T13:49:21 < karlp> yeah, because 8bit fixed point decimals sounds like something much mor elogicall than just plain whole numbers :)
2014-02-17T13:50:15 < zyp> no worse than other kinds of decimals
2014-02-17T13:50:51 < karlp> thinking of priority levels as fractions sounds absurd to me though
2014-02-17T13:51:13 < zyp> anyway, consider you have 16 priorities then; 00, 10, 20 ..., d0, e0, f0
2014-02-17T13:51:24 < zyp> but your hardware only implements three bits
2014-02-17T13:51:46 < zyp> what happens then is that every two of them gets grouped without you having to do anything about it
2014-02-17T13:52:34 < zyp> I don't get how it is absurd, to me it's pretty intuitive
2014-02-17T13:52:48 < karlp> lucky you :)
2014-02-17T13:53:49 < zyp> it also makes sense when you deal with grouping
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2014-02-17T13:54:59 < zyp> say you want four groups of four priorities each; you set the upper two bits to determine group, and then the rest will determine subpriority and follow the same rules of precision vs implemented bits
2014-02-17T13:55:21 < zyp> i.e. you divide the total range by four first, and then subdivide inside that
2014-02-17T13:56:11 < karlp> right, I get how it works now that I've looked at i t more, I just didn't find it as intuitive as you
2014-02-17T13:56:28 < karlp> I didn't care how many total priorities I could have, so I didn't take the whole range and dividie it appropriately
2014-02-17T13:56:33 < karlp> I read, "16 levels of priority"
2014-02-17T13:56:39 < karlp> and went, "cool, I only need 4-5"
2014-02-17T13:56:52 < karlp> and I made them 0,1,2,3,4 and wrote them to the "priority" register
2014-02-17T13:56:58 < zyp> you also get the advantage that you can insert new priority levels between the existing ones without changing the existing ones
2014-02-17T13:57:03 < karlp> now, sure, that makes me a fool who didn't read the manual
2014-02-17T13:57:13 < karlp> but it was s imple and "intuitive" to me
2014-02-17T13:57:28 < karlp> and I just added a new priority level when I wanted one by inserting a new item in my list of priorities
2014-02-17T13:57:44 < karlp> and as long as I stayed less than the number of priorities that my hardware implemented, I thought I was still ok.
2014-02-17T13:58:06 < zyp> well, it is, but it's the hard way to do it
2014-02-17T14:00:41 < zyp> what made it intuitive for me was the rationale behind why it's the upper bits that's implemented, not the lower
2014-02-17T14:01:08 < karlp> I can see how it makes writing irq code that targets platforms that have different implementaiton bits easier yes.
2014-02-17T14:01:12 < zyp> i.e. imagine what would happen if you run code on a platform with fewer implemented bits if it was the other way
2014-02-17T14:01:40 < karlp> yeah I get it now that I've been burnt,
2014-02-17T14:01:51 < zyp> :)
2014-02-17T14:01:59 < karlp> but it seems like a failing on the "least surprise" principle
2014-02-17T14:02:27 < zyp> hmm?
2014-02-17T14:02:43 < karlp> never mind, you've already made it clear it wasn't a surprise to you :)
2014-02-17T14:05:28 < zyp> oh, it might have been, I've just forgotten about how I thought about it before I learned this :)
2014-02-17T14:06:03  * karlp grins
2014-02-17T14:06:33 < karlp> well, adding shifts now makes things run beautifully as expected.
2014-02-17T14:06:53 < karlp> so, have you seen any other cortex's with not 4 bits?
2014-02-17T14:07:07 < karlp> at least some of the documentation in libopencm3 needs to be improved...
2014-02-17T14:07:10 < zyp> yes
2014-02-17T14:07:43 < zyp> I forgot which, might have been LM4F, but I'm pretty sure I saw one with three bits once
2014-02-17T14:09:50 < karlp> m0 only has 2 bits it seems
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2014-02-17T15:18:32 < karlp> zyp: the "definitiive guide" book says that you need to write 0xff to the priority reg and read it back to work out the bits, there's no register containing it directly, but it's apparently a minimum of 3 for cm3
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2014-02-17T15:40:28 < zyp> ah, right
2014-02-17T15:40:48 < zyp> yeah, I saw reference manual said 3-8
2014-02-17T16:02:51 < zyp> dongs, http://deidealewereld.vier.be/vladibird/ <- this looks like something for you
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2014-02-17T16:14:41 < edmont> hi
2014-02-17T16:15:56 < edmont> do you think it's possible to substitute the STM32 external crystal by an Atmega CLKO?
2014-02-17T16:16:57 < edmont> i mean, in order to save one crystal if both MCUs are in the same board
2014-02-17T16:18:53 < Lux> why would you want to have an atmega if you allready have a stm32 mcu ?
2014-02-17T16:20:23 < Lux> if the voltage levels are ok, then it'll probably work
2014-02-17T16:23:26 < Steffanx> zyp that one is too easy..
2014-02-17T16:23:40 < Steffanx> no real flappy bird difficulty
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2014-02-17T16:33:40 < edmont> Lux: atmega128rfa1, it includes a rf transceiver
2014-02-17T16:33:59 < madist> edmont: read the datasheet. sometimes the crystal pins are labeled 'clock out' and 'clock in' and you can omit the crystal and feed a clock into the in pin.
2014-02-17T16:34:25 < edmont> madist: yeah, that's what i want
2014-02-17T16:34:38 < madist> rf and mcu on the same die ? that's interesting.
2014-02-17T16:36:04 < edmont> madist: yes, 802.15.4
2014-02-17T16:36:44 < edmont> you can have a IPv6 wireless device
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2014-02-17T16:38:46 < beaky> hello
2014-02-17T16:38:57 < beaky> is it overkill to have both an stm32f3 and an stm32f4 in the same application?
2014-02-17T16:39:16 < beaky> or is it okay
2014-02-17T16:39:54 < GargantuaSauce> this is gonna be a fancy smps
2014-02-17T16:41:20 < beaky> btw is it possible to disable the other stuff on the stm32 discovery boards? i need to use those pins and they conflict :(
2014-02-17T16:41:38 < zyp> edmont, yes, as long as you get the voltage level right, you can feed in an external clock on osc_in
2014-02-17T16:41:39 < madist> beaky: if you want it to be a safe smps then you definitely need a TI Hercules safety MCU on board in addition to the STM32F3 and the STM32F4.
2014-02-17T16:41:40 < beaky> st says i could take a scalpel and cut the tracks, but i dont wanna do that :(
2014-02-17T16:42:07 < beaky> madist: what will be the role of that besides redundancy?
2014-02-17T16:42:22 < madist> beaky: it will provide the fail-safe features
2014-02-17T16:42:23 < beaky> madist: the stm32f3 already is doing voltage and current control
2014-02-17T16:42:29 < beaky> what kind of failsafe features
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2014-02-17T16:44:16 < madist> beaky: what will happen to your SMPS if the STM32F4 gets burned while the SMPS is running ?
2014-02-17T16:44:44 < beaky> madist: it wont run: gate drivers get pulled low
2014-02-17T16:45:00 < madist> see! the Hercules can save that.
2014-02-17T16:45:11 < madist> You can program the Hercules to keep the SMPS running.
2014-02-17T16:45:35 < beaky> how can hercules implement an smps is it as fast as the stm32f3?
2014-02-17T16:46:19 < beaky> if the stm32f3 goes down then the ethernet link will go down as well unfortunately
2014-02-17T16:46:31 < beaky> oh wait maybe i can get hercules to do ethernet?
2014-02-17T16:46:44 < madist> YES!
2014-02-17T16:47:02  * beaky unboxes his hercules launchpad
2014-02-17T16:47:06 < beaky> finally i have found a use for thee
2014-02-17T16:47:19  * beaky dreams that a hercules launchpad exists... he can dream, can he?
2014-02-17T16:47:39 < beaky> i think stm32f4 is enough for that job
2014-02-17T16:47:58 < beaky> or even a simple watchdog + redundant analog smps
2014-02-17T16:48:05 < madist> beaky: http://www.ti.com/tool/launchxl-rm42
2014-02-17T16:48:16 < beaky> omg it actually exists
2014-02-17T16:48:40 < beaky> only 20 bucks
2014-02-17T16:50:22 < beaky> wow maybe that chip can replace teh stm32f3
2014-02-17T16:51:32 < Laurenceb> wtf ST
2014-02-17T16:51:34 < Laurenceb> http://www.st.com/st-web-ui/static/active/jp/resource/technical/document/application_note/CD00167326.pdf
2014-02-17T16:51:49 < Laurenceb> " a solution may be considered that
2014-02-17T16:51:49 < Laurenceb> consists in setting the RTC prescaler to 32 766 (instead of 32 768"
2014-02-17T16:52:07 < Laurenceb> but the prescaler should be set to 32767 normally
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2014-02-17T16:53:31 < madist> what about that Laurenceb ?
2014-02-17T16:53:50 < Laurenceb> well they are wrong
2014-02-17T16:54:03 < Laurenceb> numbers should be 32765 and 32767
2014-02-17T16:55:25 < madist> The next page says "To set the RTC prescaler to 32 766, write 32 765 into the RTC prescaler load register."
2014-02-17T16:55:46 < Laurenceb> lol fairdoos
2014-02-17T17:02:44 < beaky> so if my stm32 crashes, then my smps burns
2014-02-17T17:02:49 < beaky> unless i use hercules?
2014-02-17T17:03:08 < beaky> im pretty sure there are some safety features on stm32f3 since it is designed for smps
2014-02-17T17:03:47 < jpa-> i would aim to design hw so that trivial software bugs do not burn it
2014-02-17T17:04:14 < beaky> right
2014-02-17T17:04:27 < jpa-> Laurenceb: just remember the -1
2014-02-17T17:04:45 < beaky> how about redundant differential control lines to the gate driver such that an analog protection circuitry kicks in upon discrepencies?
2014-02-17T17:05:23 < jpa-> beaky: umm.. so are you worried about the controller freezing or about it dumping random crap on GPIO?
2014-02-17T17:05:28 < beaky> both
2014-02-17T17:05:43 < beaky> who knows maybe i have a bug in the ethernet code and it gets stuck in infinite loop
2014-02-17T17:05:45 < jpa-> well design against the first one, the second one rarely happens
2014-02-17T17:06:21 < beaky> maybe some hacker could hack my smps and set it to overvolt
2014-02-17T17:06:35 < beaky> but thats another thing entirely... security is hard :(
2014-02-17T17:07:28 < beaky> i guess the watchdogs in teh stm32f3 can help prevent or recover from lockup
2014-02-17T17:09:25 < beaky> wow cool didn't know stm32f3 had an embedded function generator
2014-02-17T17:10:11 < Steffanx> beaky.. the only solution for that is to not make it ethernet controlled..
2014-02-17T17:10:26 < Steffanx> -.
2014-02-17T17:10:42 < qyx_> and thats how disasters happen
2014-02-17T17:10:44 < madist> what sort of loser would want an smps that's not ethernet enabled ?
2014-02-17T17:11:44 < jpa-> beaky: i wouldn't rely on watchdog alone, for example breakpoints in debugger can bypass watchdog
2014-02-17T17:12:22 < jpa-> security isn't that hard really
2014-02-17T17:12:25 < beaky> yeah i guess some kind of standalone watchdog would be required anyway
2014-02-17T17:12:44 < jpa-> beaky: what is there about the hardware that cannot tolerate cpu freeze?
2014-02-17T17:12:56 < beaky> jpa-: the cpu does the voltage and current regulation
2014-02-17T17:13:08 < beaky> calculating changes in duty cycle for the dc-dc converters
2014-02-17T17:13:18 < jpa-> even so, easy enough to make it so that voltage goes to 0 if cpu freezes
2014-02-17T17:13:27 < jpa-> hardware timers in oneshot mode or something
2014-02-17T17:13:56 < jpa-> and overvolting is one thing, burning is another
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2014-02-17T17:51:40 < Laurenceb> attn dongs
2014-02-17T17:51:41 < Laurenceb> http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/LN1847?icmp=ln1847_pron_pr-nucleo_feb2014
2014-02-17T17:53:01 < Laurenceb> "The Arduino™ connectivity support and ST Morpho headers "
2014-02-17T17:54:50 -!- txf [~txf@146.185.153.97] has quit [Ping timeout: 264 seconds]
2014-02-17T17:57:25 < Steffanx> heh S
2014-02-17T17:57:27 < Steffanx> T
2014-02-17T17:59:27 < beaky> aww no nucleo for stm32f3 :(
2014-02-17T17:59:59 < Laurenceb> yet
2014-02-17T18:00:11 < zyp> I bet dongs will love it
2014-02-17T18:00:36 < beaky> wow its cheaper than the disco
2014-02-17T18:00:38 < zyp> now he can finally use arduino shields while he c++ it up with the mbed libs
2014-02-17T18:00:40 < beaky> and the uno r3
2014-02-17T18:18:24 < Thorn> fake FT232RL https://www.olimex.com/forum/index.php?topic=2031.0 http://habrahabr.ru/company/zeptobars/blog/212859/
2014-02-17T18:20:35 < madist> can someone quickly teach me to read russian ?
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2014-02-17T18:24:08 < madist> Chinese in this case did not just "fake", and took the finished mask programmable microcontroller in production (so you need to change only one mask - it is much cheaper and explains the extra contacts on the chip), the party ordered production of the chips at the factory.
2014-02-17T18:26:10 < madist> so someone programmed a mcu to emulate a FT232 ? is that what they're saying ?
2014-02-17T18:26:20 < Thorn> basically yes
2014-02-17T18:26:56 < Thorn> FTDI learned about it and released new drivers which detect this crap
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2014-02-17T18:27:43 < beaky> what does a ftdi do that a sufficiently advanced mcu cant
2014-02-17T18:27:53 < madist> why isn't there a notice on the ftdi website ?
2014-02-17T18:28:18 -!- emeb [~ericb@ip68-104-219-168.ph.ph.cox.net] has joined ##stm32
2014-02-17T18:28:31 < gxti> because "we saw china cloned our shit so we deliberately broke it" isn't very good PR
2014-02-17T18:29:04 < beaky> lol
2014-02-17T18:34:35 -!- Vutral [~ss@mirbsd/special/Vutral] has joined ##stm32
2014-02-17T18:43:00 < jpa-> http://i.4cdn.org/v/src/1392648100479.jpg   ok who of you is this?
2014-02-17T18:44:09 < zyp> that's almost as bad as my living room
2014-02-17T18:44:32 < jpa-> pictures mandatory
2014-02-17T18:44:49 < zyp> I'm joking :)
2014-02-17T18:44:54 < jpa-> :(
2014-02-17T18:46:04 < madist> I think that's dongs' workstation.
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2014-02-17T18:51:12 < Laurenceb> rofl
2014-02-17T18:51:30 < Laurenceb> lol the ladyboy doll
2014-02-17T18:52:42  * madist can't see any peenus
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2014-02-17T19:59:40 < beaky> why is the disco only 3V rather than 3.3v
2014-02-17T20:00:50 < zyp> to make you wonder
2014-02-17T20:01:15 < beaky> ST makes wonders
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2014-02-17T20:01:37 < Thorn> the display 429 disco is rated for 2.8V, 3.3 is absolute maximum
2014-02-17T20:01:41 < Thorn> +on
2014-02-17T20:01:42 < bvernoux> hi
2014-02-17T20:01:43 < beaky> oh
2014-02-17T20:01:52 < beaky> thats a reason alrighty
2014-02-17T20:01:56 < Thorn> why other boards have diodes, I dunno
2014-02-17T20:01:57 < beaky> hello  bvernoux
2014-02-17T20:02:34 < beaky> maybe the gimmicky MEMS ics they put on the other boards need 2v9 as well?
2014-02-17T20:02:47 < Thorn> haven't checked that
2014-02-17T20:02:51 < beaky> 2v8*
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2014-02-17T20:26:10 < qyx_> my stm is quite hot :/ seems it doesn't like 100 req/sec over http
2014-02-17T20:26:30 < qyx_> but probably theres also some other problem
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2014-02-17T20:32:55 < Thorn> measure current
2014-02-17T20:34:20 < beaky> wow how do you do http
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2014-02-17T20:34:52 < qyx_> using c code
2014-02-17T20:35:38 < PaulFertser> qyx_: what tcp/ip stack are you using, and what http server?
2014-02-17T20:36:17 < qyx_> lwip/my own
2014-02-17T20:36:34 < PaulFertser> With socket api or native?
2014-02-17T20:37:06 < zyp> that doesn't make sense
2014-02-17T20:37:22 < PaulFertser> zyp: eh?
2014-02-17T20:37:37 < qyx_> socket api
2014-02-17T20:37:44 < zyp> running http at full throttle shouldn't consume significantly more power than just busywaiting
2014-02-17T20:37:54 < qyx_> ah yes, it is
2014-02-17T20:38:01 < qyx_> erm
2014-02-17T20:38:05 < qyx_> yes, it doesn't
2014-02-17T20:38:07 < zyp> and my chips doesn't get hot while busywaiting
2014-02-17T20:38:21 < Thorn> http is power-inefficient because it's text-based.
2014-02-17T20:38:22 < qyx_> 85mA @ 20V, quite much
2014-02-17T20:38:43 < qyx_> but it is idle now
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2014-02-17T20:57:06 < qyx_> it is hot even when halted
2014-02-17T20:57:37 < Thorn> you should measure the Vcc rail
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2014-02-17T20:58:46 < Thorn> what about reset btw? is it still hot under reset?
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2014-02-17T21:05:32 < qyx_> i cannot directly measure the vcc rail, but it would be > 200mA
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2014-02-17T21:06:55 < Thorn> this is probably over maximum
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2014-02-17T21:09:45 < gnomad> Does anyone know if there is a site which does a comparison of all of the ST DISCO boards?  (aside from the parametric table at st.com...)
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2014-02-17T21:59:54 < Thorn> anyone used http://www.davicom.com.tw/userfile/24247/DM9000A-DS-F01-101906.pdf ?
2014-02-17T22:00:15 < Thorn> ethernet phy+mac with a parallel interface
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2014-02-17T22:20:59 < qyx_> hm, no
2014-02-17T22:21:53 < RaYmAn> hm, on STM32F2xx, is it possible to find the current state of RTS pin with HW flow control enabled? the CTS flag in USART_SR only seems to tell whether there was a change
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2014-02-17T22:25:22 < RaYmAn> ok, that was somewhat rambling..basically, I need to know when the remote-devices CTS pin goes low.. (TI CC2564) - What would be the right way to figure that out?
2014-02-17T22:26:47 < gxti> set up EXTI for that pin
2014-02-17T22:26:59 < gxti> i.e. a standard GPIO interrupt-on-change
2014-02-17T22:27:21 < RaYmAn> that still works even though it's set to AF?
2014-02-17T22:27:22 < __rob> hellop
2014-02-17T22:27:49 < __rob> I've got this knock off STlink V2, with 6 pin IDC. Just wondering what the minimum is I need to program and debug a Cortex M0
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2014-02-17T22:28:01 < __rob> I have power on the board
2014-02-17T22:28:06 < __rob> do I need reset wired up ?
2014-02-17T22:28:14 < __rob> for debug to work properly
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2014-02-17T22:37:52 < aadamson> you need ground, swdio, swclk, and *may* need nrst
2014-02-17T22:38:08 < aadamson> I usually use reset
2014-02-17T22:38:18 < aadamson> there is a webpage with specifics, let me find it
2014-02-17T22:39:29 < aadamson> http://www.micromouseonline.com/2011/11/05/stlink-swd-for-stm32/#axzz2RZCslFET
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2014-02-17T22:40:10 < aadamson> for me personally, the stlinkv2 is so cheap, I like the *real* thing, but to each their own, ymmv as they say
2014-02-17T22:43:38 < qyx_> Thorn: probably found the reason, a 1mm piece of cut wire made its way between the pins :S
2014-02-17T22:44:01 < Thorn> I suspected a solder bridge lol
2014-02-17T22:44:18 < qyx_> not a solder bridge, it must have come there later
2014-02-17T22:44:35 < qyx_> which indicates that i have mess on my table
2014-02-17T22:45:32 < qyx_> probably some part of the stm is dead, i soldered a new one there, now its ok
2014-02-17T22:46:17 < Thorn> hopefully your mess doesn't include a -20V wire hanging over your board (happened to me once)
2014-02-17T22:46:31 < Steffanx> lol me too Thorn :P
2014-02-17T22:46:39 < Steffanx> destroyed my programmer
2014-02-17T22:46:46 < Steffanx> wont tell you for what uc :P
2014-02-17T22:46:47 < qyx_> me too, 12V
2014-02-17T22:47:02 < __rob> thanks addamson
2014-02-17T22:47:03 < Steffanx> A V R
2014-02-17T22:47:08 < __rob> this one cost me $5
2014-02-17T22:47:13 < qyx_> Steffanx: hopefully
2014-02-17T22:47:29 < qyx_> ok, lets make smoke like beaky
2014-02-17T22:47:30 < Thorn> in my case it probably touched ground on the board -> every IC went into trash
2014-02-17T22:47:42 < __rob> £3.49, spend more on a coffee :)
2014-02-17T22:47:44 < qyx_> mine touched swd header
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2014-02-17T23:59:14 < __rob> can anyone tell me what "first" means in this context
2014-02-17T23:59:15 < __rob> The VDDA voltage level must be always greater or equal to the VDD voltage level and must be provided first.
2014-02-17T23:59:25 < __rob> this is my datasheet
2014-02-17T23:59:33 < __rob> I was going to tie them both to VCC
2014-02-17T23:59:42 < __rob> along with the other power pins
--- Day changed Tue Feb 18 2014
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2014-02-18T00:01:47 -!- Robint91 [~Robin@dD5776E9E.access.telenet.be] has joined ##stm32
2014-02-18T00:01:50 < Robint91> WUT WUT
2014-02-18T00:01:59 < Robint91> ST ARDUINO DUINO
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2014-02-18T00:52:20 < Laurenceb_> ARDDU FDDDdUUUUINUUU
2014-02-18T00:53:17 < Laurenceb_> DERPDUINO
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2014-02-18T01:13:53 < timemob> matchboxarm just got obsolete
2014-02-18T01:13:55 < timemob> http://www.st.com/st-web-ui/active/en/press/en/p3526
2014-02-18T01:14:51 < timemob> better CPU all io onboard debugger and USB boot loader
2014-02-18T01:15:05 < timemob> and still cheaper than ripoffarm
2014-02-18T01:20:11 < Robint91> timemob, indeed
2014-02-18T01:20:14 < Robint91> also the price
2014-02-18T01:22:06 < timemob> I had no idea it would be such a fail trollable project or else I'd give them $1 just so I could spam their comments section
2014-02-18T01:22:46 < Robint91> timemob, lol
2014-02-18T01:22:54 < Robint91> timemob, like 10€ for the 401
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2014-02-18T01:25:46 < timemob> yep
2014-02-18T01:29:05 < timemob> I think I'm going to update matchboxarm.com with that piece of news from st
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2014-02-18T01:46:33 < dongs> haha if you google mouser , digikey paid ad is on top
2014-02-18T01:47:07 < dongs> bah
2014-02-18T01:47:12 < dongs> 401 nucelo is out of stock in mouser
2014-02-18T01:50:36 < zyp> I knew you would want one
2014-02-18T01:50:38 < zyp> 17:00:11 < zyp> I bet dongs will love it
2014-02-18T01:50:39 < zyp> 17:00:38 < zyp> now he can finally use arduino shields while he c++ it up with the mbed libs
2014-02-18T01:51:39 < dongs> ^^
2014-02-18T01:52:28 < dongs> k editing html on matchboxarm
2014-02-18T02:02:11 < dongs> http://matchboxarm.com/
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2014-02-18T02:17:32 < aadamson> nice update on matchboxarm, but you need to fix the BAKING to BREAKING :)
2014-02-18T02:17:37 < dongs> no
2014-02-18T02:17:42 < aadamson> hehe...ok
2014-02-18T02:17:45 < dongs> thats how they write
2014-02-18T02:17:51 < aadamson> ah, got it
2014-02-18T02:18:15 < dongs> Hello beloved bakers! Here you have a demo with the line follower robot. You can now see how fast the MatchboxARM does computations on data readed from the analogic sensors and creates a PWM waveform to control the two motors.
2014-02-18T02:18:25 < dongs> FAST COMPUTATIONS!!!
2014-02-18T02:18:31 < aadamson> OMG...
2014-02-18T02:19:10 < dongs> https://github.com/MBARM/MatchboxARM/blob/master/KEIL/LINEFOLLOWER/USER/main.c
2014-02-18T02:19:13 < dongs> here's the amazing code
2014-02-18T02:19:39 < dongs> so wow
2014-02-18T02:19:40 < dongs> much fast
2014-02-18T02:21:06 < aadamson> yeah wonder if an AVR could do it just as fast :)... (over clock one bet it will)
2014-02-18T02:22:25 < dongs> there's nothing going on there.
2014-02-18T02:22:29 < dongs> they're using maybew 1% of hte cpu
2014-02-18T02:22:57 < dongs> https://github.com/MBARM/MatchboxARM/blob/master/KEIL/LINEFOLLOWER/USER/main.c#L194 also..
2014-02-18T02:28:02 < emeb> awesome norway: http://yle.fi/uutiset/poroille_tarkoitetun_heijastinsprayn_tehtavana_estaa_liikenneonnettomuuksia/7093117
2014-02-18T02:29:05 < emeb> or, perhaps finland. who is to be knowing...
2014-02-18T02:30:21 < BrainDamage> .fi I doubt it's norway
2014-02-18T02:30:47 < BrainDamage> also, too many ä
2014-02-18T02:31:13 < Steffanx> and the words are too long.. :P
2014-02-18T02:36:06 < dongs> ässholes
2014-02-18T02:36:48 < dongs> maybe beaky can use the new stm32 mbed shit to make his smps and kill himself
2014-02-18T02:39:20 < gxti> arduino mains smps shield!
2014-02-18T02:39:51 < dongs> yess
2014-02-18T02:40:22 < dongs> http://gushh.net/tmp/arduinoshield.png
2014-02-18T02:41:27 < Steffanx> its no fun to talk about mr B when he isn't here..
2014-02-18T02:41:46 < dongs> did heragequit?
2014-02-18T02:41:53 < Steffanx> sleepy time.
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2014-02-18T02:46:35 < Steffanx> so your dong-cam with improved night vision dongs? http://www.businesswire.com/news/home/20140216005046/en/Komamura-Corporation-Revolutionary-Color-Night-Vision-Video
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2014-02-18T04:05:07 < __rob> am I definatly going to have broken my Cortex M0 by soldering up VDDA/VSSA the wrong way round
2014-02-18T04:05:10 < __rob> it got warm
2014-02-18T04:09:10 < __rob> st link utility is not connecting with NRESET pulled up, swdio connected with 100k pullup to VCC, swdclk with 100k pulldown to GND
2014-02-18T04:09:13 < __rob> thats all i have connected
2014-02-18T04:09:32 < __rob> if that should work then I must have cooked something ?
2014-02-18T04:12:05 < aadamson> um ya, if you put vcc on the ground pins and vice-a-versa... it's toast
2014-02-18T04:13:39 < __rob> annoying
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2014-02-18T04:39:32 < dongs> warm = youre fucked
2014-02-18T04:39:55 < dongs> thats standard failure of stm32 due to overvoltage/reverse polrity
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2014-02-18T04:53:31 < dongs> http://i.imgur.com/0AHshFp.jpg lol
2014-02-18T04:57:03 < GargantuaSauce> thats about the condition a lot of my ups packages come in
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2014-02-18T06:00:19 < Thorn> buydisplay shipped my order via fedex wtf
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2014-02-18T06:10:04 < dongs> http://www.ebay.com/itm/201031335536 good deal
2014-02-18T06:11:53 < madist> beaky could afford one of those
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2014-02-18T06:46:58 < Thorn> how do I produce 22V @ 40 or so mA?
2014-02-18T06:47:16 < Thorn> some kind of switched capacitor converter?
2014-02-18T06:47:36 < gnomad> what are you starting with?
2014-02-18T06:47:44 < Thorn> 5 or 3.3
2014-02-18T06:47:58 < gnomad> even 40 mA is a lot for charge pumps.
2014-02-18T06:48:10 < Thorn> or do I need a full boost reg with inductors
2014-02-18T06:49:06 < gnomad> and generally, a charge pump is going to at most double Vin.
2014-02-18T06:50:00 < Thorn> looks like so
2014-02-18T06:55:24 < Rickta59> there is the WEBENCH Designer on the http://ti.com page
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2014-02-18T07:09:29 < Thorn> ok playing with webench
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2014-02-18T08:43:09 < dongs> BSD'd chats
2014-02-18T08:46:27 < emeb_mac> guru meditation alert
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2014-02-18T09:31:13 < emeb_mac> "the best part about bitcoins is that you get to watch libertarians slowly discover why financial regulations exist to begin with"
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2014-02-18T09:54:03 < dongs> unfunny politicla joke alert
2014-02-18T09:54:18 < dongs> still no clue what liberatarian/leftist/rightist/wahtever shit mean
2014-02-18T09:54:23 < dongs> fuck politics
2014-02-18T09:54:41 < emeb_mac> it's mostly just noise
2014-02-18T09:54:48 < dongs> thats what im guessing.
2014-02-18T09:54:56 < emeb_mac> unfortunately, it's noise that affects our daily lives.
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2014-02-18T10:19:08 < dongs> not mine!
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2014-02-18T11:06:47 < dongs> http://aut.researchgateway.ac.nz/bitstream/10292/161/1/SiringoringoW.pdf
2014-02-18T11:08:22 < talsit> wow, something actually interesting
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2014-02-18T11:47:57 < dongs> what, you mean i never paste interesting stuff?
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2014-02-18T12:01:20 < karlp> stm32w are all but one listed as NRND, guess that failed
2014-02-18T12:14:23 < zyp> no wonder
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2014-02-18T14:17:59 < dongs> http://en.wikipedia.org/wiki/Genesis_Microchip oh this is where ST's display / lcd trash portfolio came from
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2014-02-18T14:31:43 < dongs> http://i.imgur.com/jmazDWK.png another fucking part that shows crystal gnd pads going to vcc.
2014-02-18T14:33:14 < dongs> The loading capacitors are terminated to the RPLL_VDDA_1V2 power supply. This connection increases the power supply rejection ratio when compared to terminating the loading capacitors to ground.
2014-02-18T14:33:23 < dongs> news2me
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2014-02-18T14:44:36 < zyp> hey, rs485 guys, which are usually positive and negative of A and B?
2014-02-18T14:44:56 < zyp> got some equipment here with conflicting definitions
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2014-02-18T15:05:50 < Claude> zyp , B is positive
2014-02-18T15:06:33 < Claude> http://en.wikipedia.org/wiki/RS-485#Pin_labeling
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2014-02-18T15:10:49 < Thorn> ADM3485 datasheet says A is noniverting and B is inverting
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2014-02-18T15:13:59 < Thorn> wikipedia says the opposite lol
2014-02-18T15:20:44 < zyp> right
2014-02-18T15:20:46 < zyp> «These manufacturers are incorrect, but their practice is in widespread use. Therefore, care must be taken when using A/B naming.»
2014-02-18T15:21:25 < zyp> in my case I have a TI PHY, to be hooked to a device with A-/B+
2014-02-18T15:22:28 < Thorn> well should be easy to scope RI and A/B at the same time
2014-02-18T15:23:14 < Thorn> er I mean DI
2014-02-18T15:26:41 < zyp> no, that's not a problem, the datasheets document it well enough
2014-02-18T15:27:05 < zyp> I just wondered what definition of A/B that is the «right» one
2014-02-18T15:27:33 < Thorn> question about differential buses: if there's no ground connection between 2 devices, is the bus still differential?
2014-02-18T15:28:06 < zyp> why wouldn't it be? it's still the difference between the signals that matter
2014-02-18T15:28:09 < Thorn> (e.g. when using isolated drivers)
2014-02-18T15:28:41 < Thorn> a single-ended signal is also a difference between signal and ground
2014-02-18T15:28:43 < zyp> at least if you keep the cabling balanced
2014-02-18T15:29:40 < zyp> well, ethernet is using differential signalling without any ground connection between devices
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2014-02-18T15:30:15 < zyp> think of it another way; you can't have single ended signals without any ground connection between devices
2014-02-18T15:34:09 < Thorn> why is ethernet transformer coupled btw?
2014-02-18T15:34:17 < Thorn> to eliminate dc offset?
2014-02-18T15:34:28 < zyp> yes
2014-02-18T15:34:50 < zyp> to avoid galvanic coupling in all
2014-02-18T15:34:57 < zyp> ground loops and shit
2014-02-18T15:35:08 < GargantuaSauce> yeah more like mains noise
2014-02-18T15:35:21 < GargantuaSauce> but i guess compared to ethernet signals, 60hz is pretty much dc
2014-02-18T15:35:32 < GargantuaSauce> so the statement holds :V
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2014-02-18T15:37:00 < Thorn> I guess the real question is, what's the difference between a 2-wire single-ended bus and a 2-wire differential bus (assume balanced cable in both cases)
2014-02-18T15:37:07 < karlp> zyp: yeah, we regularly have problems with people complainig about rs485 a/b naming.
2014-02-18T15:37:37 < karlp> then you get the fun of people talking about register numbers vs registers addresses for modbus.
2014-02-18T15:38:13 < zyp> thankfully I didn't write the modbus code for this project :)
2014-02-18T15:38:27 < zyp> I've looked at it, and it looks like a load of bullshit
2014-02-18T15:38:59 < karlp> my general practicse is "the left wire to the a, the right wire to the b, then swap it if it didn't work"
2014-02-18T15:39:14 < karlp> sort of like how most people seem to approach usb plug insertion :)
2014-02-18T15:39:19 < zyp> :)
2014-02-18T15:39:31 < zyp> how many times do you have to swap them before it works then? ;)
2014-02-18T15:39:38  * karlp isn't answering that one ;)
2014-02-18T15:40:28 < zyp> I saw one of my coworkers were playing with a stm32 discovery board earlier today
2014-02-18T15:40:36 < zyp> your «KARL» print is still in st-util :p
2014-02-18T15:41:04  * karlp grins
2014-02-18T15:41:19 < karlp> people still use that?
2014-02-18T15:41:31 < zyp> I didn't care to suggest openocd instead
2014-02-18T15:41:41 < zyp> since it were working as is
2014-02-18T15:42:40 < karlp> "Add --reset option to trigger a reset both before and after flashing."
2014-02-18T15:42:47 < karlp> yeah, cos that sounds like a useful feature...
2014-02-18T15:43:02 < zyp> :p
2014-02-18T15:43:09 < karlp> yeah, openocd is different ugly, but it works out of the box for most things these days,
2014-02-18T15:43:14 < karlp> (as long as the box is recent git master)
2014-02-18T15:44:17 < Thorn> http://upload.wikimedia.org/wikipedia/commons/3/37/Dolby_SR_breadboard.jpg
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2014-02-18T15:49:12 < Steffanx> is that a joke Thorn?
2014-02-18T15:50:58 < Thorn> what, the photo?
2014-02-18T15:51:24 < Thorn> http://zh.wikipedia.org/wiki/File:Dolby_SR_breadboard.jpg "taken at The History of Audio: The Engineering of Sound, an exhibition of the San Francisco Airport Museums[1] in SFO Airport, Terminal 3 from 2006-09 to 2007-05"
2014-02-18T15:54:00 < Steffanx> Yes, the photo Thorn
2014-02-18T15:56:01 < Claude> speaking of RS485 A/B , in my former job we did control systems for clean room filter units , RS485 network (also modbus) . and even with skilled workers A/B was wrong on every second fan/filter unit :) fun to change the wiring on 1k++ units
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2014-02-18T16:01:50 < Laurenceb> http://www.ebay.co.uk/itm/Soft-mouse-pad-Sexy-3D-mouse-pad-with-wrist-rest-mouse-pads-free-shipping-02-/181245360359?pt=UK_Collectables_AnimationCharacters_Anime_SM&hash=item2a3310b8e7
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2014-02-18T16:14:50 < dongs> does USPS really have a tradmark for ZIP Code(tM)
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2014-02-18T16:17:54 < Thorn> How is a multilayer PCB made https://www.youtube.com/watch?v=67WhV0EDqCA
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2014-02-18T16:23:21 < dongs> what hte fuck is taht
2014-02-18T16:23:26 < dongs> hand-made pcb shit?
2014-02-18T16:23:58 -!- Vutral [~ss@mirbsd/special/Vutral] has joined ##stm32
2014-02-18T16:29:19 < Thorn> looks like a prototyping process or something
2014-02-18T16:34:06 -!- Claude is now known as claude
2014-02-18T16:35:39 < Thorn> http://www.pcbone.com/calculator.php <-- 5x 100x100mm 2-layer boards will be 235 euro with shipping from them
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2014-02-18T16:39:43 < qyx_> quite expensive
2014-02-18T16:43:38 < madist> cheaper if you're getting a 4 layer board
2014-02-18T16:44:00 < Thorn> 370 eur
2014-02-18T16:44:12 < madist> cheaper than the alternatives
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2014-02-18T16:52:12 < Thorn> http://www.pcbone.com/edu/ videos for every manufacturing step
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2014-02-18T16:57:16 < gxti> hackvana does that for like $35. praise china.
2014-02-18T16:57:54 < gxti> dongs: USPS has a real hard-on for trademarks
2014-02-18T16:58:15 < gxti> they write (R) after every single Post Office, no exceptions
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2014-02-18T17:06:22 < qyx_> they pay attention to details
2014-02-18T17:06:34 < qyx_> someone might steal their post office
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2014-02-18T17:08:21 < dongs> http://tsdr.uspto.gov/#caseNumber=73001312&caseType=SERIAL_NO&searchType=statusSearch
2014-02-18T17:08:24 < dongs> apparently it expired
2014-02-18T17:08:27 < dongs> and tehy didnt bother renewing
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2014-02-18T17:11:17 < Thorn> gxti: never heard of hackvana, how is the quality? esp. compared to seeed
2014-02-18T17:11:28 < dongs> thorn, its same garbage
2014-02-18T17:11:40 < dongs> is hjackvana evne s till in business
2014-02-18T17:12:21 < gxti> Thorn: it's fine, and unlike seeed someone is actually looking at your files
2014-02-18T17:12:24 < Thorn> I heard seeed quality is quite good these days
2014-02-18T17:12:43 < Thorn> ok good to know
2014-02-18T17:13:14 < dongs> spec looks same shit as shitstudio
2014-02-18T17:13:17 < dongs> 0.3mm min drill
2014-02-18T17:13:29 < dongs> and 6/6 trace/space (tho seed is 8/8 supposedly
2014-02-18T17:13:48 < gxti> you can get better trace if you pay for it, probably same for drill
2014-02-18T17:13:49 < qyx_> seed is 6
2014-02-18T17:14:00 < qyx_> 0.15mm
2014-02-18T17:14:13 < dongs> shrugging
2014-02-18T17:14:44 < Thorn> dongs: I'm accepting dongations so I can pay $300 to a real mfr for a stm32 breakout or something like that lol
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2014-02-18T17:25:55 < __rob> Thorn, why not go on ebay and get a QFP breakout
2014-02-18T17:26:19 < __rob> then solder it up to some strip board, and your away..
2014-02-18T17:26:47 < __rob> http://www.ebay.co.uk/itm/400611184564
2014-02-18T17:26:48 < __rob> I use these
2014-02-18T17:27:50 < Thorn> that was just an example
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2014-02-18T17:28:56 < gxti> you should do it on NASA-grade Rogers 8-layer board
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2014-02-18T17:30:48 < Thorn> kickstarter worthy idea
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2014-02-18T17:43:10 < beaky> hello
2014-02-18T17:43:46 < beaky> any recomendations for efficient C++ lib of peripherals?
2014-02-18T17:43:52 < beaky> that is easy to use
2014-02-18T17:43:55 < jpa-> laks
2014-02-18T17:43:56 < beaky> and nice and elegant
2014-02-18T17:44:26 < beaky> http://cgit.jvnv.net/laks/tree/build_rules this?
2014-02-18T17:44:39 < jpa-> yes
2014-02-18T17:45:18 < beaky> wow this is awesome
2014-02-18T17:45:22 < beaky> its header-only? :D
2014-02-18T17:45:28 < beaky> oh wait
2014-02-18T17:45:43 < beaky> http://cgit.jvnv.net/laks/tree/interrupt/interrupt.cpp look at this awesomeness
2014-02-18T17:46:02 < jpa-> much template such happiness
2014-02-18T17:46:10 < gxti> awesum
2014-02-18T17:46:47 < beaky> whats it like to use? any demo or examples?
2014-02-18T17:47:00 < beaky> it looks leagues ahead of cmsis/stm32_std_periph_lib
2014-02-18T17:47:23 < jpa-> there are demos somewhere there
2014-02-18T17:47:36 < jpa-> first hurdle is to learn to use cgit web page :P
2014-02-18T17:47:56 < jpa-> http://cgit.jvnv.net/laks_demo/   select any branch
2014-02-18T17:48:55 < beaky> wow awesome
2014-02-18T17:49:24 < gxti> awesum
2014-02-18T17:50:21 < __rob> beaky, this guy looked like he did a nice job. I've not tried it though
2014-02-18T17:50:22 < __rob> http://embeddedprogrammer.blogspot.co.uk/2012/07/open-source-template-peripheral-library.html
2014-02-18T17:50:39 < beaky> i hate the idea of reinventing the wheel
2014-02-18T17:50:56 < beaky> when others folks who are 100x better programmers than I am have already made an awesome C++ lib
2014-02-18T17:51:04 < beaky> which are both efficient and easy to use
2014-02-18T17:51:17 < beaky> (at least compared to whatever I would come up with)
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2014-02-18T17:52:35 < beaky> i love my stm32f3
2014-02-18T17:52:43 < beaky> it has opamps that i can use to operationally amplify analog signals
2014-02-18T17:53:02 < gxti> much hearties
2014-02-18T17:53:06  * GargantuaSauce pats his stack of 741s
2014-02-18T17:54:15 < Steffanx> __rob, imho zyp's work is much cleaner..
2014-02-18T17:54:36 < GargantuaSauce> laks looks pretty damn cool, i should give it a try
2014-02-18T17:55:43 < Steffanx> https://github.com/JorgeAparicio/libstm32pp/blob/master/include/peripheral/gpio.hpp all those wonderful typedefs :D
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2014-02-18T17:55:52 < Thorn> gpio::registers::afr::states::USART1_3
2014-02-18T17:56:04 < Thorn> such namespace so boost
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2014-02-18T17:57:41 < beaky> wow that example made me realize that namespaces actually CAN be abused :D
2014-02-18T17:57:52 < beaky> so how do I opamp with zyp's awesome lib?
2014-02-18T17:58:19 < beaky> noninverting PGA with gain 2
2014-02-18T17:58:31 < Steffanx> write some code that talks to the right registers
2014-02-18T17:58:38 < Steffanx> i dont think zyp implemented that.
2014-02-18T17:58:50 < beaky> ok i guess maybe I can write opamp.h
2014-02-18T17:58:51 < __rob> using namespace x;
2014-02-18T17:58:53 < __rob> prolem solved
2014-02-18T17:59:11 < __rob> as far as I'm concerned anyway
2014-02-18T18:00:04 < __rob> Steffanx, what is zyp's work ?
2014-02-18T18:00:45 < beaky> __rob: http://cgit.jvnv.net/laks/tree/
2014-02-18T18:00:52 < beaky> a C++ library for stm32
2014-02-18T18:01:10 < __rob> ohh, didn't know about this, nice
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2014-02-18T18:08:40 < beaky> ok im using my stm32f3 opamp in noninverting amplifier, PGA mode with gain 2. At 1MHz triangle wave i get phase shift and distortion of my triangle wave. why is that?
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2014-02-18T18:24:26 <+dekar> So will anyone attend embedded world? ST is giving away free stuff :) http://www.st.com/web/en/event/embedded_world_2014
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2014-02-18T18:32:43 < madist> is it for only N.A. like the last time ?
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2014-02-18T18:39:54 < karlp> they're giving away stuff at the european one too, but yeah, you have to be industry enough to go to the events
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2014-02-18T18:42:12 < karlp> st's demoing coocox at embedded world :)
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2014-02-18T18:48:16 < emeb> anyone tried em::blocks?
2014-02-18T18:48:40 < emeb> Seems to work OK - has all the latest ST parts including F427/F429
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2014-02-18T19:06:08 < Steffanx> windows only emeb?
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2014-02-18T19:17:45 < emeb> Steffanx: yeah - downside.
2014-02-18T19:18:18 < emeb> OTOH, I've got clients for whom that isn't an issue. Just trying to get them going w/o spending $4k+ on MDK...
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2014-02-18T19:28:54 < karlp> if emblocks is just "pure c++" with no libs like they claim, why doesn't it run in other places?
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2014-02-18T19:41:36 < Laurenceb> http://hackaday.com/2014/02/18/stm32-nucleo-the-mbed-enabled-arduino-compatable-board/#comments
2014-02-18T19:41:39 < Laurenceb> lol top comment
2014-02-18T19:45:16 < beaky> "32-bit microcontrollers are slower than 8-bit AVRs so they clock them with higher frequencies. I’ll stick with my good old Arduino."
2014-02-18T19:45:40 < beaky> its obviously in jest
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2014-02-18T19:47:20 < GargantuaSauce> Imagine if you will a world where the Cortex bus connecting the STM32 core to its GPIOs has a 2 clock cycle delay. In this world, much like our own, AVR bit banging is twice as fast at the same clock frequency. Only the M0+ cores have a faster bus allowing single-cycle pin access.
2014-02-18T19:48:14 < beaky> A few comments later: "This chip makes my dick rock hard." and the reply (from the same dude who claimed 32-bit ucs are slower than avr): "Will make yours soft once you see those awful libs from ST."
2014-02-18T19:49:34 < beaky> the libs aint that bad imo
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2014-02-18T20:02:01 < madist> beaky: you are a programmer ?
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2014-02-18T20:19:28 < Rickta59> those sold out fast, yesterday I saw 200 of the nucleo f4 boards .. now all gone
2014-02-18T20:19:43 < Rickta59> * mouser.com
2014-02-18T20:21:18 < karlp> cheaper than a disco, but doesn't include any of the periphs
2014-02-18T20:21:37 < karlp> but you get a uart with your stlink now...
2014-02-18T20:21:52 < Rickta59> can you use the stlink-v2 on there to program? or is does it only work with external chips?
2014-02-18T20:22:01 < karlp> hrmm?
2014-02-18T20:22:20 < karlp> the nucleo docs say it's just like any other stlink on a disco board, jsut with the new uart and MSC modes to work better with embed
2014-02-18T20:22:31 < karlp> it still has the standard 6 pin stlink header and jumpers
2014-02-18T20:22:39 < karlp> and now it's even advertised as "cut here to use it separately"
2014-02-18T20:23:17 < Rickta59> so the jtag side of the board has the same vid/pid? as the current one with just additional cdc_acm?
2014-02-18T20:23:30 < karlp> not sure of vid/pid, I haven't seen one yet :)
2014-02-18T20:23:57 < karlp> but yeah, that's what the nucelo user manual implies
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2014-02-18T21:06:28 < __rob> do I need the boot pin pulled high or low on my STM32F0 cortex M 0?
2014-02-18T21:06:59 < __rob> I've just got SWDIO SWCLK RESET and all the VCC/VSS wired up
2014-02-18T21:07:15 < __rob> and STlink Utility is having problems finding my chip
2014-02-18T21:08:03 < Steffanx> it shouldn't matter for your programmer to detect it afaik.
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2014-02-18T21:08:15 < __rob> the above should be enough ?
2014-02-18T21:09:14 < Steffanx> uhm, yes.
2014-02-18T21:09:23 < __rob> got something ...
2014-02-18T21:09:39 < __rob> http://pastebin.com/63aWh1zS
2014-02-18T21:09:49 < __rob> so its detecting the chip after on/off the stlink
2014-02-18T21:10:16 < __rob> and this time it works
2014-02-18T21:11:27 < Steffanx> Not that is really matters, but it's vdd/vddaa, not vcc :P
2014-02-18T21:11:35 < Steffanx> ( and vss/vssa )
2014-02-18T21:11:36 < __rob> sorry, yea
2014-02-18T21:12:41 < Steffanx> boot0 low can be useful if you actually want to boot from main flash.
2014-02-18T21:13:13 < __rob> surely I alwasy want to boot from main flash ?
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2014-02-18T21:24:15 < zyp> yes, unless you want to boot rom bootloader
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2014-02-18T21:39:11 < beaky> hello
2014-02-18T21:43:28 < beaky> I love zyp's lib
2014-02-18T21:43:52 < Steffanx> ok.
2014-02-18T21:54:13 < beaky> so... anyone else used the stm32f3 opamps?
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2014-02-18T22:40:51 < __rob> can anyone tell me do official ST Link v2's require 3.3 on the programmer to be connected to the 3.3 v on the board
2014-02-18T22:40:58 < __rob> or is it just my knock off one that seems to need this
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2014-02-18T23:50:18 < karlp> __rob: no, the "vcc" on the programmer is jsut for detecting the target voltage.
2014-02-18T23:50:43 < karlp> your cheapo might actually be powered by the target?
2014-02-18T23:54:40 < zyp> karlp, it's common for target vcc to power the target side of a level converter
2014-02-18T23:54:48 < zyp> first revision bmp also did that
2014-02-18T23:59:08 < karlp> yeah, seen that too, official stlink has no buffer though.
--- Day changed Wed Feb 19 2014
2014-02-19T00:00:21 < zyp> I guess that settles it
2014-02-19T00:01:03 < karlp> but you're right, I should have said "vcc on a programmer is just for detection" :)
2014-02-19T00:01:09 < karlp> should _not_ have said
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2014-02-19T00:27:48 < karlp> redonging? http://picpaste.com/pics/pulseview-z80-decoder.1392762434.png
2014-02-19T00:33:51 < zyp> heh, that's cute
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2014-02-19T00:59:19 < Ranewen> now you can use all of your shields dongs  http://hackaday.com/2014/02/18/stm32-nucleo-the-mbed-enabled-arduino-compatable-board/
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2014-02-19T02:44:27 < BrainDamage> karlp: sigrok gui?
2014-02-19T02:44:40 < dongs> any matchboxarm news
2014-02-19T02:45:34 < qyx_> i hate rohs solder :S
2014-02-19T02:45:37 < dongs> no way
2014-02-19T02:45:38 < dongs> i love it
2014-02-19T02:45:40 < dongs> so mooth
2014-02-19T02:45:41 < dongs> smooth
2014-02-19T02:45:55 < dongs> i even solder my rc trash with rohs :(
2014-02-19T02:46:08 < qyx_> its pain for hand soldering
2014-02-19T02:47:14 < qyx_> which one do you use, SnCu or SnAgCu?
2014-02-19T02:47:23 < qyx_> or some other
2014-02-19T02:47:39 < BrainDamage> SnSn
2014-02-19T02:48:15 < dongs> snagcu i think
2014-02-19T02:48:24 < dongs> sn 3.0Ag 0.5Cu
2014-02-19T02:48:51 < qyx_> should try that one
2014-02-19T02:49:44 < dongs> i have 0.3mm thick stuff i use for the rare times hwen i handsolder something w/o stencil
2014-02-19T02:49:44 < qyx_> and tip temperature?
2014-02-19T02:49:47 < dongs> its prety good
2014-02-19T02:50:07 < dongs> http://www.hozan.co.jp/E/catalog/Soldering/Lead-free_solder.html
2014-02-19T02:50:09 < dongs> HS-301
2014-02-19T02:50:24 < qyx_> i cannot even do dpak with vias to ground plane
2014-02-19T02:50:59 < qyx_> hm, 217 melting point, this one has 227
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2014-02-19T03:53:28 < upgrdman> got some extension tubes for my SLR. now my macro pcb photos can be even more close up :) yay.  http://www.farrellf.com/projects/photography/2014_02_18_Macro_Lens_Extension_Tubes/
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2014-02-19T04:06:31 < dongs> nice blog
2014-02-19T04:11:49 < upgrdman> thanks
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2014-02-19T04:15:48 < qyx_> hm, nice photos
2014-02-19T04:19:08 < qyx_> another 3 boards nearly finished http://i.imgur.com/HKUnO95.jpg
2014-02-19T04:22:03 < gxti> solenoid drivers right? what for?
2014-02-19T04:22:56 < qyx_> actually don't really know, i just have to do valve drivers controllable from pc
2014-02-19T04:23:03 < gxti> k
2014-02-19T04:23:12 < qyx_> some chemical analytical method
2014-02-19T04:23:26 < dongs> why the fuck you dont have passives down yet
2014-02-19T04:23:37 < dongs> i'd have thought it would be way more aanoinyg trying to solder those after big parts are in
2014-02-19T04:23:49 < qyx_> because they are still accessible
2014-02-19T04:24:00 < qyx_> and i am lazy now
2014-02-19T04:24:07 < upgrdman> neat boards. are those diodes sitting ~1mm above the pcb?
2014-02-19T04:24:24 < upgrdman> or is it just the lighting?
2014-02-19T04:24:32 < qyx_> no, they have J-leads
2014-02-19T04:25:02 < upgrdman> oh
2014-02-19T04:26:18 < qyx_> these china dualcolor diffuse leds are quite nice
2014-02-19T04:26:21 < dongs> jew-leads
2014-02-19T04:26:43 < dongs> qyx_: like a 3030 package with 2 sections, filled with diffused stuff?
2014-02-19T04:26:57 < qyx_> no, 3mm
2014-02-19T04:27:02 < dongs> well, 3030 is 3mm.
2014-02-19T04:27:08 < dongs> in ledspeak
2014-02-19T04:27:22 < qyx_> oh, so probbaly yes
2014-02-19T04:27:23 < dongs> http://www.seoulsemicon.com/en/html/product/product_view.asp?catecode=2005038
2014-02-19T04:27:37 < qyx_> no
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2014-02-19T04:27:54 < qyx_> i just ebay-ed these
2014-02-19T04:27:55 < qyx_> http://www.ebay.com/itm/400577355314
2014-02-19T04:28:01 < dongs> that was jsut 1st random hit for 3030 led. i meant that its used like that
2014-02-19T04:28:10 < dongs> o  that shit
2014-02-19T04:28:11 < dongs> not even smd
2014-02-19T04:28:14 < dongs> olo'
2014-02-19T04:28:35 < qyx_> i wanted them right angled between the connectors
2014-02-19T04:28:36 < qyx_> so tht
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2014-02-19T04:31:01 < dongs> so this guy on ebay sells bubble envelopes and underwear..
2014-02-19T04:31:03 < dongs> nice combination
2014-02-19T04:31:09 < dongs> i was gonna check out waht other trash they have to grab some shit i dont need
2014-02-19T04:31:11 < qyx_> http://i.imgur.com/pZLNFh7.jpg
2014-02-19T04:31:13 < qyx_> like this
2014-02-19T04:31:20 < qyx_> lol
2014-02-19T04:31:23 < dongs> nice
2014-02-19T04:31:35 < dongs> thats pretty pro shit right there
2014-02-19T04:31:45 < Thorn> qyx_: what mosfets did you use?
2014-02-19T04:31:54 < dongs> looks like some ST stuff
2014-02-19T04:31:59 < Thorn> yes
2014-02-19T04:32:08 < qyx_> D12NF06L
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2014-02-19T04:32:11 < qyx_> fom st
2014-02-19T04:32:16 < gxti> super pro
2014-02-19T04:33:04 < dongs> and bike gear
2014-02-19T04:33:06 < gxti> extruded enclosures == srs bsns
2014-02-19T04:33:37 < qyx_> classical problem is going to arise
2014-02-19T04:33:44 < dongs> http://www.ebay.com/sch/m.html?item=360793883052&LH_BIN=1&_ssn=chenping27&_pgn=2&_skc=50&rt=nc
2014-02-19T04:34:00 < qyx_> where to order 10pcs of alu plates
2014-02-19T04:34:00 < gxti> whose CNC to mooch off of?
2014-02-19T04:34:02 < gxti> hurr
2014-02-19T04:34:02 < dongs> and then this http://www.ebay.com/itm/360769714353
2014-02-19T04:34:09 < dongs> qyx_: frontpanelexpress?
2014-02-19T04:34:14 < dongs> (if you dont mind paying that is
2014-02-19T04:34:59 < upgrdman> nice access hatch on those tights
2014-02-19T04:35:00 < upgrdman> lol
2014-02-19T04:35:04 < qyx_> ill try local laser guys first, it would be < 50e hopefully
2014-02-19T04:39:28 < dongs> http://www.ebay.com/itm/380771229469 is that cheap
2014-02-19T04:40:12 < qyx_> http://www.ebay.com/itm/New-USB-Port-Laser-Scan-Barcode-Scanner-Bar-Code-Reader-Grey-Hand-Held-For-POS/290971487329?rt=nc&_trksid=p2047675.m1851&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D261%26meid%3D4936003050586551458%26pid%3D100005%26prg%3D1088%26rk%3D2%26rkt%3D5%26sd%3D380771229469%26
2014-02-19T04:40:17 < qyx_> cheaper
2014-02-19T04:40:20 < qyx_> nah link
2014-02-19T04:40:39 < dongs> yeah never mind, there's similar shit for like 10-15bucks
2014-02-19T04:41:13 < dongs> that guy has nothing useful
2014-02-19T04:41:14 < dongs> ugh
2014-02-19T04:41:19 < dongs> iphone cases
2014-02-19T04:41:20 < dongs> what the fuck
2014-02-19T04:41:21 < dongs> 500 of htem
2014-02-19T04:41:41 < dongs> http://i.ebayimg.com/00/s/NTIwWDUxOQ==/z/DIoAAOxy4~BSRkAV/$(KGrHqN,!o0FIvYBWPOeBSRk!UnQMw~~60_12.JPG
2014-02-19T04:41:44 < dongs> lewl
2014-02-19T04:43:24 < dongs> k he sux
2014-02-19T04:43:27 < dongs> nothing for real phones
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2014-02-19T04:53:03 < upgrdman> this almost looks like a good idea    http://i.imgur.com/xBqGEdM.jpeg
2014-02-19T05:07:30 < emeb> poor fish
2014-02-19T05:11:55 < dongs> ugh i recently moved some r eels around and bat54c ended up on back of dicknplace and i forgot i need to rotate parts 180" on there
2014-02-19T05:12:00 < dongs> assembled a panel of shit and all diodes are backwards
2014-02-19T05:12:03 < dongs> fucking useless jap trash
2014-02-19T05:12:47 < gxti> backwards sot23?
2014-02-19T05:12:58 < gxti> did it solder at all?
2014-02-19T05:13:36 < dongs> i saw it after it came out of dicknplace
2014-02-19T05:13:41 < dongs> so im manually rotating the shits now
2014-02-19T05:13:52 < dongs> no, it wouldnt solder
2014-02-19T05:14:06 < dongs> its right smack in the opposite way so missing all pads
2014-02-19T05:14:06 < dongs> heh
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2014-02-19T05:28:28 < emeb> dongs-n-place
2014-02-19T05:29:08 < gxti> dickndick
2014-02-19T05:30:23 < dongs> my oven has bene doing weird shit lately
2014-02-19T05:30:26 < dongs> sometime needs powercycle
2014-02-19T05:30:34 < dongs> just now i set it on preheat but sensor said only 70C
2014-02-19T05:30:36 < dongs> for entire run
2014-02-19T05:30:37 < dongs> ugh
2014-02-19T05:30:44 < dongs> i hope the shit doesnt decide to die on me when I actually have real work to do
2014-02-19T05:32:08 < qyx_> renesas inside
2014-02-19T05:32:18 < dongs> BSD inside
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2014-02-19T05:52:12 < dongs> http://www.instructables.com/id/Wireless-Altoids-Cycle-Computer/ haha
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2014-02-19T06:27:00 < upgrdman> why are diodes even offered in sot23 or other 3pin packages?
2014-02-19T06:29:17 < gxti> cheaper probably
2014-02-19T06:29:42 < gxti> in terms of tooling. and of course once one company did it the others followed...
2014-02-19T06:34:11 < dongs> upgrdman: bat54c is dual diode.
2014-02-19T06:34:16 < dongs> but i've used htem as single didoe as wel
2014-02-19T06:34:26 < dongs> simply because its laready loaded in my dicknplace and i dont care
2014-02-19T06:34:42 < upgrdman> ok
2014-02-19T06:35:36 < Thorn> there are single diodes in sot23
2014-02-19T06:35:58 < upgrdman> ya, i've got maybe a hundred of those
2014-02-19T06:36:03 < dongs> yes, there are
2014-02-19T06:36:12 < dongs> but im not buying a reel or loading it into machine
2014-02-19T06:36:19 < dongs> when I can use already paid for bat54c's on a reel
2014-02-19T06:39:08 < Thorn> do you need to do anything special to charge a li-ion battery and draw power at the same time? i.e. a battery-powered device that keeps running while being charged
2014-02-19T06:39:50 < qyx_> no if you draw less current than your charger can supply
2014-02-19T06:40:03 < qyx_> on average
2014-02-19T06:40:19 < qyx_> simply connect to the battery in parallel
2014-02-19T06:41:07 < qyx_> you can find such schematic in some charger datasheets
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2014-02-19T07:18:36 < dongs> http://raspmap.tsar.in/ waveshare now sells niggerberrypi?
2014-02-19T07:19:51 < dongs> why chinaclone so expensive
2014-02-19T07:19:58 < dongs> http://www.wvshare.com/product/RPi-B-CN.htm
2014-02-19T07:20:36 < emeb_mac> it's the latest thing. the kids just love it.
2014-02-19T07:24:58 < dongs> hey they use same microUsb as me
2014-02-19T07:25:04 < dongs> i wonder if original did same
2014-02-19T07:25:31 < dongs> meh, it did
2014-02-19T07:25:36 < dongs> so chinks didnt improve anything
2014-02-19T07:27:26 < dongs> heh, schematic says to use rclamp0524p for hdmi esd diode, but they're using something else
2014-02-19T07:27:32 < dongs> it must be cheap, hmm
2014-02-19T07:27:39 < dongs> time to ask
2014-02-19T07:29:20 < Thorn> The charge status output of the MCP73831 has three different states: High (H), Low (L), and High-Impedance (Hi-Z).
2014-02-19T07:29:29 < Thorn> how do I connect this to a mcu
2014-02-19T07:29:44 < Thorn> without using adc
2014-02-19T07:29:58 < dongs> huh?
2014-02-19T07:30:02 < dongs> to do what?
2014-02-19T07:30:15 < Thorn> to detect charger state
2014-02-19T07:30:31 < dongs> you need to know when its highimpedance?
2014-02-19T07:30:54 < Thorn> hi-z=no battery, L=charging, H=charged
2014-02-19T07:31:09 < Thorn> I'd like to differentiate between all 3
2014-02-19T07:31:24 < emeb_mac> what's hi-z mean?
2014-02-19T07:31:34 < Thorn> high impedance
2014-02-19T07:31:39 < emeb_mac> ya I know that
2014-02-19T07:31:48 < emeb_mac> but what state does it signify from the charger
2014-02-19T07:31:51 < dongs> < Thorn> hi-z=no battery, L=charging, H=charged
2014-02-19T07:31:54 < dongs> he just said it dude.
2014-02-19T07:31:58 < dongs> ^_^
2014-02-19T07:32:05 < dongs> if you dont mind wasting another gpio
2014-02-19T07:32:21 < dongs> hook it up through a transistor or something
2014-02-19T07:32:50  * emeb_mac needs to go to bed or something
2014-02-19T07:34:11 < Thorn> I'd still probably need a pulldown or something
2014-02-19T07:40:55 < Thorn> maybe a 100K pullup + another gpio through 10K
2014-02-19T07:41:19 < Thorn> if it's high, try pulling it low with second gpio
2014-02-19T07:45:22 < dongs> lemme see what my analol'g pro says
2014-02-19T07:47:57 < Thorn> is there a 1:1 correspondence between charging voltage (4.2V, 4.4, 4.5 etc.) and what's written on the battery (3.6, 3.7 etc.)?
2014-02-19T07:48:12 < dongs> 4.2V is lipo cell max voltage
2014-02-19T07:48:17 < dongs> i think li-ion is 3.7 max?
2014-02-19T07:48:19 < dongs> or something.
2014-02-19T07:49:24 < Thorn> For example, almost all lithium polymer batteries
2014-02-19T07:49:24 < Thorn> are 3.7V or 4.2V batteries. What this means is that the maximum voltage of the cell
2014-02-19T07:49:24 < Thorn> is 4.2v and that the "nominal" (average) voltage is 3.7V.
2014-02-19T07:49:34 < Thorn> straight from ladyada
2014-02-19T07:49:41 < dongs> who teh fuck is ladyada
2014-02-19T07:49:46 < dongs> some kinda maker/inventor?
2014-02-19T07:50:34 < Thorn> isn't she on the dongs' most wanted list
2014-02-19T07:55:43 < Thorn> she mentions 2 voltage pairs: 3.6/4.1 and 3.7/4.2
2014-02-19T07:56:00 < Thorn> "Overcharging a 3.6V battery by attaching it to a 4.2V battery charger can at the very least permanently damage your battery and at worst cause a fire!"
2014-02-19T07:56:28 < dongs> k my analog pro is taking a shit and thinking how to do it in the most hacky/cool way
2014-02-19T07:56:45 < Thorn> but mcp73831 comes in 4 variants: 4.2, 4.35, 4.4, 4.5
2014-02-19T07:56:47 < madist> that sounds like bullshit. 0.1V can make such a big difference ?
2014-02-19T07:57:06 < dongs> madist: 0.1V?
2014-02-19T07:57:07 < Thorn> apparently there're youtube videos about that
2014-02-19T07:57:13 < dongs> 4.2-3.6 > 0.1v
2014-02-19T07:57:24 < dongs> all lipos i've seen and lipo cells are 4.2V
2014-02-19T07:57:26 < dongs> at least RC trash
2014-02-19T07:57:35 < madist> 3.6 is nominal voltage. a 3.6 cell is charged at 4.1V
2014-02-19T07:57:40 < madist> that's how I understand it.
2014-02-19T07:57:41 < Thorn> dongs: 4.2 vs. 4.1
2014-02-19T07:57:44 < dongs> o
2014-02-19T07:58:28 < Thorn> why does microchip make 4.4 and 4.5V versions then
2014-02-19T07:58:32 < dongs> sounds liek aidsfruit is talking out through paul thorrone's ass
2014-02-19T07:58:37 < Thorn> they like fireworks and lawsuits?
2014-02-19T07:58:50 < dongs> i'd suspect mchp knows what they're doing and makers dont
2014-02-19T07:59:13 < upgrdman> prolly different chemestries
2014-02-19T07:59:21 < upgrdman> 4.1V == lion. 4.2v == lipo
2014-02-19T07:59:25 < upgrdman> others, i dont know
2014-02-19T07:59:26 < madist> or perhaps they left it flexible for future developments
2014-02-19T07:59:34 < upgrdman> perhaps LiFe
2014-02-19T07:59:42 < madist> what is the accuracy of that chip ?
2014-02-19T08:00:04 < Thorn> 4.168...4.2...4.232
2014-02-19T08:00:10 < madist> to be able to distinguish between 4.1 and 4.2 would require very high regulation accuracy.
2014-02-19T08:00:11 < Thorn> 4.367...4.4...4.433
2014-02-19T08:00:23 < Thorn> 4.466...4.5...4.534
2014-02-19T08:00:32 < Thorn> 4.317...4.35...4.383
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2014-02-19T08:01:03 < Thorn> 4 significant digits is serious business
2014-02-19T08:01:34 < upgrdman> ? a shit 'duino can easily do mV resolution
2014-02-19T08:01:50 < madist> resolution is not accuracy
2014-02-19T08:02:21 < upgrdman> true, but accuracy isn't terribly hard when you give yourself a margin of, what, 30mV
2014-02-19T08:02:32 < Thorn> load regulation: 0.05% typ, 0.3% max
2014-02-19T08:02:52 < Thorn> sounds like you can use it as a voltage reference
2014-02-19T08:05:17 < Thorn> 3.7V battery from seeed. overcharge detection voltage 4.250+/-0025V
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2014-02-19T08:05:32 < Thorn> 0.025
2014-02-19T08:05:56 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has quit [Quit: Leaving]
2014-02-19T08:06:32 < Thorn> looks like it can be triggered by that chip, 4.25-0.025 = 4.225 < 4.232
2014-02-19T08:06:38 < Thorn> lol
2014-02-19T08:14:15 < dongs> Thorn: http://i.imgur.com/XLY9q6G.jpg
2014-02-19T08:15:22 < dongs> you control the out pin, and use truth table to lookup stuff based on in value.
2014-02-19T08:15:51 < Thorn> ah. I almost came up with that (except the series resistor). thanks.
2014-02-19T08:16:13 < Thorn> (looks like my 2 resistor version would also work)
2014-02-19T08:17:17 < dongs> for bonus points use a sot23 single diode package and route something through unused pin
2014-02-19T08:17:32 < dongs> then whoever looks at your board will be like wtf
2014-02-19T08:18:15 < Thorn> better yet use a 2 diode package and make sure one of them is always reverse biased. wtf^2
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2014-02-19T13:09:12 < dongs> commence chats
2014-02-19T13:16:33 < zyp> ok
2014-02-19T13:16:44 < zyp> any news on the wires?
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2014-02-19T13:26:41 < qyx_> hm, stm newsletter
2014-02-19T13:26:46 < qyx_> some mems
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2014-02-19T14:19:06 < Steffanx> I never recevied those newsletters, for some reason i started to receive them a few weeks ago....
2014-02-19T14:25:40 < Laurenceb> he LPS25H is an ultra-compact absolute piezoresistive pressure sensor.
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2014-02-19T14:48:43 < dongs> https://www.kjmagnetics.com/proddetail.asp?prod=BZX0ZX0Y0-N52 i need 3
2014-02-19T14:48:52 < dongs> Laurenceb: new mems fromst?
2014-02-19T14:55:23 < Steffanx> Does this inemo board make dongs happy?
2014-02-19T14:55:52 < dongs> 'this inmemo board'?
2014-02-19T14:55:54 < dongs> is there a new one?
2014-02-19T14:55:58 < dongs> all the old ones were meh
2014-02-19T14:56:00 < qyx_> no, the old one
2014-02-19T14:56:07 < qyx_> but there is some lsm9d
2014-02-19T14:56:23 < Steffanx> oh, it's not new... why they have it in their newsletter?
2014-02-19T14:56:44 < dongs> i havent got any ST newsletter yet :(
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2014-02-19T14:56:56 < dongs> LPS25H looks prety cheap
2014-02-19T14:56:58 < dongs> 2 bux @ reel
2014-02-19T14:57:01 < dongs> i wonder how good oit is
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2014-02-19T14:59:42 < dongs> lol datasheetschematic has 100uF as cap on power suply
2014-02-19T14:59:46 < dongs> but text bnelow says 100nF
2014-02-19T15:02:40 < Laurenceb> RS: 	Have you joined the Raspberry Pi revolution yet?
2014-02-19T15:03:06 < Laurenceb> "These incredible little computers are the size of a credit card but can do pretty much anything that a full size PC can do"
2014-02-19T15:03:26 < dongs> assuming you dont use your fullsize pc for anything other htan playing angrybirds (slowly) yea...
2014-02-19T15:03:59 -!- Viper168 [~Viper@unaffiliated/viper168] has joined ##stm32
2014-02-19T15:06:56 < Laurenceb> http://www.ebay.co.uk/itm/Soft-mouse-pad-Sexy-3D-mouse-pad-with-wrist-rest-mouse-pads-free-shipping-02-/181245360359?pt=UK_Collectables_AnimationCharacters_Anime_SM&hash=item2a3310b8e7
2014-02-19T15:12:19 < dongs> mega old
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2014-02-19T15:28:32 < beaky> hello
2014-02-19T15:30:00 < beaky> is there a way to DMA to gpio
2014-02-19T15:30:35 < karlp> sure, just do it
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2014-02-19T15:37:58 < beaky> problem is my gpios are connected around differnet ports
2014-02-19T15:38:00 < beaky> on random pins
2014-02-19T15:38:07 < beaky> so i dont know how DMA to gpio will work :/
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2014-02-19T16:07:07 < beaky> is DMA the most efficient way to transfer data to parallel gpio
2014-02-19T16:08:20 < Steffanx> Why you ask?
2014-02-19T16:09:00 < beaky> i want to bitbang a communication protocol
2014-02-19T16:09:08 < beaky> but i guess DMA will do it more efficiently
2014-02-19T16:09:59 < Steffanx> Then yes, then it probably will be.
2014-02-19T16:10:34 < Steffanx> How is it today in the United Arab Emirates beaky?
2014-02-19T16:11:24 < beaky> it was a fun day I am learning DMA in my stm32
2014-02-19T16:11:55 < beaky> I love DMA
2014-02-19T16:12:42 < Steffanx> Is there something you don't love?
2014-02-19T16:12:59 < beaky> myself
2014-02-19T16:13:05 < Steffanx> oof, want to talk about it?
2014-02-19T16:13:16 < Steffanx> How is it today in the United Arab Emirates beaky?
2014-02-19T16:13:31 < beaky> its okay
2014-02-19T16:15:04 < Steffanx> Whats the plan with the ethernet controller smps.. world domination?
2014-02-19T16:15:25 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has joined ##stm32
2014-02-19T16:15:32 < beaky> nope i just want to have a useful power supply
2014-02-19T16:16:56 < Steffanx> Isn't it easier for Sheikh beaky to buy it? :P
2014-02-19T16:17:45 < beaky> but I want to learn how to design it
2014-02-19T16:19:30 < Steffanx> :)
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2014-02-19T17:23:03 < Thorn> total engineer porn https://www.youtube.com/watch?v=LPeCKuz7tFs
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2014-02-19T17:24:33 < zyp> looks boring
2014-02-19T17:24:38 < zyp> I'd rather watch porn
2014-02-19T17:24:40 -!- dekar [~dekar@dslb-088-069-129-175.pools.arcor-ip.net] has quit [Quit: This computer has gone to sleep]
2014-02-19T17:25:38 < Tectu> zyp, knows porn?
2014-02-19T17:25:43 < Steffanx> animé :P
2014-02-19T17:26:10 < Laurenceb> hentai
2014-02-19T17:27:51 < Tectu> meh
2014-02-19T17:27:54 < zyp> Tectu, shouldn't I?
2014-02-19T17:28:00 < Laurenceb> "In 1986, Toshio Maeda sought to get past censorship on depictions of sexual intercourse, by creating tentacle sex"
2014-02-19T17:28:02 < Laurenceb> rofl
2014-02-19T17:28:18 < Tectu> no kidding, Laurenceb
2014-02-19T17:28:22 < madist> wtf. he's looking at the board and i have to look at his face ?
2014-02-19T17:28:25 < Tectu> zyp, well, it just surprises me
2014-02-19T17:28:50 < Tectu> madist, that's what certain people on the internet call 'mfw'
2014-02-19T17:29:19 < zyp> Tectu, why?
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2014-02-19T17:32:24 < Tectu> zyp, I'd prefer not talking about it as I would probably hurt your feelings
2014-02-19T17:33:00 < beaky> has anyone here used the dsPIC?
2014-02-19T17:33:00 < beaky> how does it compare to stm32f3 and stm32f4?
2014-02-19T17:33:29 < karlp> it's way better
2014-02-19T17:33:36 < karlp> really great irc support channel too
2014-02-19T17:33:51 < Tectu> karlp, sarcasm?
2014-02-19T17:34:12 < zyp> Tectu, of course, there's no better support channel than ##stm32
2014-02-19T17:34:28 < Tectu> ah, I thought he means the dsPIC
2014-02-19T17:35:33 < Thorn> beaky: pic32mz is AWESOME
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2014-02-19T17:55:53 < dongs> lol, you idiots. beaky is a professional troll except he sucks at it
2014-02-19T17:56:08 < dongs> the best thing you can do is immediately put him on ignore.
2014-02-19T17:56:18 < madist> dongs is just sore that he got upstaged by a newcomer
2014-02-19T17:56:26 < dongs> haha plz.
2014-02-19T17:57:22 < jpa-> the troll concentration on this channel is steadily rising
2014-02-19T17:57:42 < Ranewen> i passed today's exam o/
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2014-02-19T17:59:03 < beaky> wow what was the exam
2014-02-19T17:59:23 < Steffanx> what exam mr Ranewen?
2014-02-19T17:59:27 < qyx_> trolling
2014-02-19T17:59:32 < beaky> btw i wonder when there wil be nucelo boards for the f3
2014-02-19T17:59:39 < Ranewen> electrotechnic subject
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2014-02-19T18:00:09 < Ranewen> focused on ac currents, impulse circuits etc.
2014-02-19T18:02:13 < Ranewen> Steffanx: next semester il be diging in some arm assembly (real stuff)
2014-02-19T18:02:35 < PaulFertser> stm32 doesn't support arm assembly, thumb only.
2014-02-19T18:02:56 < Ranewen> PaulFertser: still, thumb knowladge will help me master arm
2014-02-19T18:03:27 < PaulFertser> Indeed
2014-02-19T18:03:29 < dongs> i think you mean the other way around.
2014-02-19T18:03:32 < dongs> also, dongs
2014-02-19T18:03:58 < PaulFertser> dongs: since he already tinkers with stm32s he's familiar with thumb, so it'll help him a great deal to learn arm.
2014-02-19T18:04:04 < dongs> o
2014-02-19T18:04:06 < dongs> k sure.
2014-02-19T18:04:11 < dongs> as long as its not beaky learning
2014-02-19T18:04:48 < PaulFertser> Ranewen: I wonder is it would be some sort of an intro to assembly course? What is the didactic purpose?
2014-02-19T18:04:49 < zyp> I believe arm and thumb is pretty unified in terms of instructions
2014-02-19T18:04:59 < zyp> so knowing one goes a long way in knowing the other
2014-02-19T18:05:51 < beaky> thumb2?
2014-02-19T18:05:56 < dongs> beaky, my script has just informed me that you are talking in the channel. I would like to make you aware of the fact that, even though I know you are typing something, any messages from your IP address are removed from my Chat window.
2014-02-19T18:06:04 < PaulFertser> arm isa is way fancier, with all those increment/decrement prefixes and preconditional flags.
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2014-02-19T18:06:48 < PaulFertser> s/prefixes/suffixes/
2014-02-19T18:06:56 < Laurenceb> i spot an irc user
2014-02-19T18:06:58 < Laurenceb> http://img385.imageshack.us/img385/9761/1207519619475tw6.jpg
2014-02-19T18:07:28 < dongs> anniemay con
2014-02-19T18:08:02 < Laurenceb> http://img238.imageshack.us/img238/1909/dec0302xy9.jpg
2014-02-19T18:08:04 < Steffanx> I bet one will say the same about you when they see you Laurenceb.
2014-02-19T18:08:30 < Steffanx> but you are also an "irc user" so.....
2014-02-19T18:09:09 < Laurenceb> http://i6.photobucket.com/albums/y250/bombtrak/manfaye.jpg
2014-02-19T18:10:40 < Thorn> arm and thumb are obsolete, it's all thumb2 now
2014-02-19T18:10:44 < dongs> Laurenceb: http://www.youtube.com/watch?v=UE0PvmVfGR8
2014-02-19T18:11:28 < zyp> Thorn, thumb2 doesn't replace thumb
2014-02-19T18:12:12 < beaky> isn't thumb2 the best of both worlds of arm and thumb
2014-02-19T18:13:07 < Ranewen> wtf did i just watch
2014-02-19T18:13:39 < Laurenceb> wtf dongs
2014-02-19T18:13:51 < Laurenceb> dongs pron?@
2014-02-19T18:15:09 < Ranewen> dongs: did i do well http://www.youtube.com/watch?v=Dd1pZrDkN_U
2014-02-19T18:16:13 < dongs> is that yours
2014-02-19T18:16:20 < dongs> cuz thats pretty hardcore for arduino
2014-02-19T18:16:25 < dongs> innovative
2014-02-19T18:17:03 < Ranewen> unfortunately you cant see the arduino, because its under the breadboard
2014-02-19T18:17:26 < Laurenceb> omg da innovatiopn
2014-02-19T18:19:48 < Steffanx> Ranewen is into ratpoison?
2014-02-19T18:20:20 < Ranewen> i use it.. why ?
2014-02-19T18:20:50 < Steffanx> i never heard of it, except for the posion to kill rats :)
2014-02-19T18:20:58 < PaulFertser> Wow, first time using SWD with an ftdi adapter and it works and the code is fine, so will hit upstream OpenOCD soon. Andreas does wonders.
2014-02-19T18:22:25 < Steffanx> oh now you talk about openocd.. i still have to look into why the chibios thread support fails (for me) in some recent opencd
2014-02-19T18:23:36 < Ranewen> anyone using bsd ?
2014-02-19T18:24:46 < dongs> we're not  dead right?
2014-02-19T18:24:48 < dongs> so why use bsd.
2014-02-19T18:25:11 < Ranewen> jeez, why cant i ask a question in here
2014-02-19T18:25:13 < dongs> isnt ratpoison some lunix destopk manager
2014-02-19T18:25:39 < Laurenceb> rofl
2014-02-19T18:25:39 < dongs> sorry, i forgot. its "cross platform"
2014-02-19T18:25:56 < dongs> (sucks equally on every platform it supports)
2014-02-19T18:26:04 < Laurenceb> http://www.nongnu.org/ratpoison/
2014-02-19T18:26:05 < Laurenceb> heh
2014-02-19T18:26:16 < Steffanx> Laurenceb, back from your depression?
2014-02-19T18:26:38 < Laurenceb> lol Steffanx
2014-02-19T18:26:59 < Steffanx> You were so quiet lately..
2014-02-19T18:27:11 < Laurenceb> permafapping
2014-02-19T18:27:12 < Steffanx> *the last few weeks
2014-02-19T18:27:21 < Steffanx> is it dr Laurenceb yet?
2014-02-19T18:27:25 < Laurenceb> nope
2014-02-19T18:27:33 < Laurenceb> cant find my supervisor :-/
2014-02-19T18:27:38 < Steffanx> lol.
2014-02-19T18:27:44 < Laurenceb> i heard he went to canada...
2014-02-19T18:27:55 -!- madist [madist@unaffiliated/madist] has quit [Read error: Connection reset by peer]
2014-02-19T18:28:14 < Steffanx> people have mail/phones nowadays.
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2014-02-19T18:35:33 < Laurenceb> any fatfs experts here?
2014-02-19T18:35:45 < Laurenceb> if i open a file as write, will it have a size?
2014-02-19T18:36:01 < Laurenceb> e.g. i create a file of size 10bytes then close it
2014-02-19T18:36:10 < Laurenceb> then re-open as write, will size be 10?
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2014-02-19T18:44:34 < dongs> Laurenceb: pretty sure y ou can open, seek to 10 bytes, then close
2014-02-19T18:44:36 < dongs> without writing
2014-02-19T18:44:37 < dongs> it should allocate it
2014-02-19T18:45:03 < dongs> hm
2014-02-19T18:45:08 < dongs> maybe you have to write it at least once
2014-02-19T18:45:09 < dongs> dunno
2014-02-19T18:45:45 < zyp> can you seek past the end?
2014-02-19T18:45:59 < Laurenceb> f_lseek(f_size(f_ptr))
2014-02-19T18:46:07 < Laurenceb> i think is how to solve my problem
2014-02-19T18:47:18 < dongs> i have no idea why the fuck fatfs has no seek that takes position modifier flags
2014-02-19T18:47:23 < Laurenceb> f_lseek(f_ptr,f_size(f_ptr))
2014-02-19T18:47:24 < dongs> i.e seek_set/seek_cur/sek_wahtever
2014-02-19T18:48:45 < Laurenceb> as normally f_close truncates file to the read/write pointer
2014-02-19T18:58:27 < beaky> hello
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2014-02-19T20:20:44 < Laurenceb> http://www.indiegogo.com/projects/digital-condom
2014-02-19T20:20:48 < Laurenceb> not sure if troll
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2014-02-19T20:36:13 < Laurenceb> omg its dongs irl
2014-02-19T20:36:15 < Laurenceb> http://www.tranchan.net/cam/trans/src/1351026040924.jpg
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2014-02-19T20:38:24 < Laurenceb> clue about his "gf" is in the url
2014-02-19T20:39:59  * madist wonders what Laurenceb was doing on transchan.
2014-02-19T20:40:11 < Laurenceb> repost on 4chan
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2014-02-19T20:41:31 < madist> does anybody post on 4chan anymore ? I see the same threads month after month.
2014-02-19T20:41:54 < Steffanx> please tell you me you are not a regular 4chan visistor
2014-02-19T20:41:57 < Steffanx> *visitor
2014-02-19T20:42:03 < madist> not anymore
2014-02-19T20:42:06 < Laurenceb> ive been unbanned recently
2014-02-19T20:42:14 < Laurenceb> i was permabanned for ages
2014-02-19T20:42:34 < Steffanx> did it help Laurenceb?
2014-02-19T20:42:38 < Laurenceb> for posting cat gore disguised as pr0nz
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2014-02-19T21:57:45 < fbs> lol
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2014-02-20T01:07:42 < Laurenceb_> lol Ukraine
2014-02-20T01:08:00 < Laurenceb_> the "euromaidens" == female petrol bomb squad
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2014-02-20T01:37:20 < Thorn> has anybody had stuff shipped from china by fedex? how soon is tracking available?
2014-02-20T01:37:49 < Thorn> buydisplay sent me the tracking number almost 48 hrs ago but fedex still doesn't know about it
2014-02-20T01:39:10 < zyp> if fedex doesn't know it yet, fedex haven't received it yet, so the blame is not on fedex
2014-02-20T01:40:18 < Thorn> so the tracking # was issued in advance?
2014-02-20T01:40:58 < Thorn> that would make sense
2014-02-20T01:41:11 < zyp> sure, shippers usually allocate them themselves in some way
2014-02-20T01:42:09 < zyp> not sure exactly how they do it to avoid collisions, maybe they get ranges to pick from
2014-02-20T01:44:04 < Thorn> btw their FPC connectors are actually top contact
2014-02-20T01:48:49 < zyp> how do RS485 deal with bus contention? just hope that higher layer protocols would time the transmissions so they don't collide?
2014-02-20T01:52:02 < Thorn> there's no collision detection, nrmally you use a request/response protocol with a single master afaik
2014-02-20T01:55:07 < Thorn> for multimaster networks you could use token passing but I don't know any real world examples
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2014-02-20T02:06:54 < dongs> Thorn: most of dudes in SZ will use an agent to do fedex
2014-02-20T02:06:56 < dongs> to save $
2014-02-20T02:07:04 < dongs> so it goes to HK by some local courier and then gets picked up by fedex
2014-02-20T02:07:09 < dongs> give it 2-3 days.
2014-02-20T02:07:20 < Thorn> I see
2014-02-20T02:08:16 < dongs> fedex to me directly would be like $100 but if they send through their scam agent its liek $30
2014-02-20T02:08:52 < dongs> but I just use SF express anyway sinec they're local and dont send me $10 bills few weeks later just for having my package in theri system
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2014-02-20T02:10:26 < Thorn> why don't they have an obvious option to ship via HK post
2014-02-20T02:10:29 -!- Viper168_ [~Viper@unaffiliated/viper168] has quit [Ping timeout: 265 seconds]
2014-02-20T02:10:50 < Thorn> are they making money on charging customers for shipping or what
2014-02-20T02:11:01 < Thorn> (I menan EastRising)
2014-02-20T02:11:05 < Thorn> *mean
2014-02-20T02:11:50 < dongs> doubtful
2014-02-20T02:12:11 < dongs> but i would imagine fedex to soviet russia costs more than to jp
2014-02-20T02:12:57 < Thorn> they have a flat rate of ~$50 (EMS/DHL/Fedex/whatever)
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2014-02-20T02:13:55 < Thorn> and there's no option to actually select shipping method (although there are order comments etc.)
2014-02-20T02:13:56 < dongs> dunno i bought like 100 16x2 modules from them and shipping was reasonable
2014-02-20T02:14:18 < dongs> dont remember wat it was but wasnt outrageous. came by dhl
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2014-02-20T02:40:02 < qyx_> zyp: yes, by higher protocols
2014-02-20T02:40:36 < qyx_> if collision occurs and you are not able to supply required ~250mA to the driver, fun things happen
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2014-02-20T04:14:33 < zippe> Thorn - alternatively, the number is allocated when they click the button in the FedEx shipping app
2014-02-20T04:14:50 < zippe> But FedEx themselves don't list it until they have the label in physical posession
2014-02-20T04:15:15 < zippe> They know about it, but their knowledge is limited to "this number is allocated to shipper X"
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2014-02-20T05:51:23 < dongs> http://www.huffingtonpost.com/2013/04/22/harpoon-x-ray-brazil-fisherman_n_3132263.html
2014-02-20T05:51:34 < dongs> wish beaky would do this
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2014-02-20T06:31:09 < Thorn> http://imgur.com/gallery/ONotkiL
2014-02-20T06:44:30 -!- madist [madist@unaffiliated/madist] has quit [Ping timeout: 260 seconds]
2014-02-20T06:57:53 < dongs> wat
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2014-02-20T06:59:58 < dongs> wat did i miss wiht ukrain
2014-02-20T07:00:10 -!- Niedar [~nnscript@ip68-110-154-15.hr.hr.cox.net] has joined ##stm32
2014-02-20T07:00:31 < qyx_> lot of things
2014-02-20T07:01:01 < qyx_> they dont know if they want to go with russia or EU or none of them
2014-02-20T07:03:27 < gxti> the peasants are revolting
2014-02-20T07:05:07 < qyx_> hopefully they will sort that out before our border catches on fire too
2014-02-20T07:13:02 < dongs> lo
2014-02-20T07:13:08 < dongs> where is thaT? .si?
2014-02-20T07:13:10 < dongs> er .sk
2014-02-20T07:13:11 < dongs> o rwhatever
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2014-02-20T07:44:58 < Thorn> when dongs was a kid http://i.imgur.com/ithfWkm.gif
2014-02-20T07:47:04 < dongs> matchboxarm still hasnt shipped
2014-02-20T07:52:52 < emeb_mac> lol - kickstarter fail
2014-02-20T08:01:09 < Thorn> 65nm wafers manufactured in russia for the first time
2014-02-20T08:04:09 < emeb_mac> welcome to 2006
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2014-02-20T08:06:52 < ds2> did IBM open a factory there? ;)
2014-02-20T08:09:53 < Thorn> I wish
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2014-02-20T12:02:54 < timemob> just got inemo st spam
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2014-02-20T12:10:22 < karlp> zyp bacnet supports token passing for rs485,
2014-02-20T12:12:42 < zyp> ok, I were mostly wondering
2014-02-20T12:12:52 < karlp> also, some people use 4 lines, to get full duplex with two transceivers, but that's more for rs422 than 485
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2014-02-20T12:13:42 < zyp> since I noticed that the difference between RS485 transceivers and CAN transceivers is that RS485 has push-pull drivers, while CAN only drives one side of each line
2014-02-20T12:14:28 < karlp> that's how can get's it automatic contention resolution I guess
2014-02-20T12:14:35 < zyp> yes
2014-02-20T12:14:50 < zyp> RS485 has three bus states; 0, 1 and idle
2014-02-20T12:15:04 < zyp> CAN only has 0 and 1 where 1 is equivalent to RS485's idle
2014-02-20T12:15:34 < Thorn> CAN is like I2C and RS-485 is like plain CMOS signaling
2014-02-20T12:15:51 < zyp> yes
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2014-02-20T12:19:55 < Thorn> and the idle state of the bus is a source of spurious received data so biasing to keep the bus in a defined state is pretty much required anyway
2014-02-20T12:20:55 < Thorn> (unless true failsafe drivers are used)
2014-02-20T12:21:03 < karlp> yay, burning current in biasing, hooray
2014-02-20T12:22:48 < Thorn> zyp: if you haven't yet seen AN960 from AD I highly recommend it
2014-02-20T12:26:31 < zyp> skimmed through it
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2014-02-20T12:51:23 < Steffanx> Did you solve this super cap issue btw zyp?
2014-02-20T12:59:50 < dongs> didnt be blog that already
2014-02-20T12:59:58 < dongs> problem was shitty supercap
2014-02-20T13:00:06  * karlp missed it
2014-02-20T13:00:17 < dongs> i saw it tweeting live
2014-02-20T13:03:43 < Steffanx> oh, i see.
2014-02-20T13:04:09 < Steffanx> Was around dinner time for me, so i missed it :)
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2014-02-20T13:31:41 < zyp> yeah, was solved by simply replacing them
2014-02-20T13:31:54 < zyp> I just don't know why they broke in the first place
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2014-02-20T15:37:45 < dongs> https://www.kickstarter.com/projects/1883701526/matchboxarm/posts/720485#comments
2014-02-20T15:37:48 < dongs> lol
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2014-02-20T15:49:31 < fbs> they still didnt ship?
2014-02-20T15:49:47 < dongs> i lol'd http://i.imgur.com/i22zNLN.jpg
2014-02-20T15:49:49 < dongs> fbs: nope
2014-02-20T15:50:04 < fbs> 225 is 5hours work max?
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2014-02-20T16:06:14 < dongs> https://www.kickstarter.com/projects/hellobragi/the-dash-wireless-smart-in-ear-headphones gholy balls
2014-02-20T16:06:17 < dongs> 2 million
2014-02-20T16:06:49 < dongs> http://www.kicktraq.com/projects/hellobragi/the-dash-wireless-smart-in-ear-headphones/
2014-02-20T16:06:52 < dongs> lol
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2014-02-20T16:18:24 < zyp> «Play & track time 3 hours»
2014-02-20T16:18:45 < zyp> should have had Qi charging
2014-02-20T16:18:50 < dongs> lo
2014-02-20T16:19:02 < dongs> also nice writeup on it on dropckicker
2014-02-20T16:19:59 < dongs> https://www.kickstarter.com/projects/751733865/smartscope-reinventing-the-oscilloscope lol, this trash suycceeded.
2014-02-20T16:20:11 < dongs> https://www.kickstarter.com/projects/obdsol/obdlink-mx-wifi-a-wireless-gateway-to-vehicle-obd?ref=footer haha
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2014-02-20T16:20:41 < dongs> http://dx.com/en/p/wifi-obd-ii-car-diagnostics-tool-for-ipod-touch-iphone-71802#.UwYPMPmSzAs
2014-02-20T16:20:43 < dongs> done
2014-02-20T16:24:14 < Steffanx> dongs can i see your agenda please?
2014-02-20T16:24:50 < Steffanx> I wonder if there is an item around 15.00 ( my time ) that says: "Visit kickstarter" :)
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2014-02-20T16:40:51 < dongs> https://s3.amazonaws.com/ksr/assets/001/519/524/d0c0c2770c49730a52f26829410ae495_large.JPG?1389559126
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2014-02-20T16:43:02 < dongs> https://www.kickstarter.com/projects/1198585932/hfc-canna-telephone-reinvented-your-next-telephone?ref=category
2014-02-20T16:43:05 < dongs> lol
2014-02-20T16:44:41 < dongs> https://www.kickstarter.com/projects/myownduino/the-lil-nardo?ref=category haha
2014-02-20T16:44:58 < dongs> I think "lil' tardo" would sound way better\
2014-02-20T16:45:30 < jon1012> a tablet with a phone... why not ? but why would you even do this ?
2014-02-20T16:45:44 < dongs> jon1012: its some chinese company trying to sell thier shit
2014-02-20T16:45:54 < dongs> you can see the serif font in the diagrams below
2014-02-20T16:46:01 < dongs> thats standard chink font that goes on everything
2014-02-20T16:48:30 < dongs> https://www.kickstarter.com/projects/1931856606/iseewhatyousay?ref=category
2014-02-20T16:49:00 < jon1012> why not ?
2014-02-20T16:49:12 < jon1012> but that could be an android app
2014-02-20T16:49:43 < jon1012> without the device
2014-02-20T16:51:48 < dongs> https://www.kickstarter.com/projects/1587823871/wet-diaper-detector-keychain-children-and-nursing
2014-02-20T16:51:51 < dongs> this shit I dont get.
2014-02-20T16:51:55 < dongs> i duno about fatmerica
2014-02-20T16:52:04 < dongs> but here diaper gets a blue line on outside when its wet
2014-02-20T16:52:06 < dongs> ????????????????
2014-02-20T16:52:23 < jon1012> I have no idea, never changed a diaper
2014-02-20T16:53:44 < madisc> that's disgusting. how long have you been wearing it ?
2014-02-20T16:54:09 < Steffanx> dongs, but we need a tweeting diaper..you dont get it :P
2014-02-20T16:54:15 < jon1012> haha
2014-02-20T16:55:22 < jon1012> at least it has some use...
2014-02-20T16:55:31 < jon1012> (not like udoo boards for example)
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2014-02-20T17:00:34 < dongs> https://www.kickstarter.com/projects/jerware/game-frame-the-art-of-pixels?ref=tag haha arduino..
2014-02-20T17:02:53 < karlp> udoo board is same as arduino tre... (almost)
2014-02-20T17:02:56 < dongs> https://www.kickstarter.com/projects/nicholasclewis/inkshield-an-open-source-inkjet-shield-for-arduino?ref=tag what the actual fuck
2014-02-20T17:04:25 < karlp> damnit, just found a integer/floating point implicit conversion fail crap in my code,
2014-02-20T17:04:35 < karlp> truncating at 32bits and _then_ storing in the double. good job
2014-02-20T17:04:38 < karlp> stupid c
2014-02-20T17:04:40 < dongs> cool
2014-02-20T17:04:52 < dongs> karlp: finding implicit float>double conversions is fun too
2014-02-20T17:05:21 < dongs> usually requires reading map file until you get rid of all f2d and blah links
2014-02-20T17:05:50 < karlp> oh, this is host side, I wanted a double, I was getting a double, but it was after it done int32 multiplcations and truncated
2014-02-20T17:06:13 < karlp> byebye significant bits
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2014-02-20T17:20:19 < jon1012> karlp, except it's really expensive and power hungry
2014-02-20T17:20:26 < jon1012> (the udoo board)
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2014-02-20T17:54:18 < Steffanx> did you ever try this bare matel stuff of qt creator Thorn?
2014-02-20T17:54:22 < Steffanx> *metal
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2014-02-20T18:03:03 < karlp> I downloaded it after reading/watching some conference thing but couldn't get it to easily import an existing makefile product
2014-02-20T18:03:52 < karlp> it wanted to manage the makefile itself and give me targets to use and I decided I had better things to do that day,
2014-02-20T18:04:05 < karlp> but I wasn't an existing user, might be different if people already useit.
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2014-02-20T18:05:38 < Steffanx> i just imported some project.. im not sure if it wants to manage the make file.
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2014-02-20T18:06:09 < jon1012> someone knows what is the name of that product chinese put on ics to "protect" them ?
2014-02-20T18:06:21 < jon1012> they put a drop of a product all over ICs
2014-02-20T18:06:42 < BrainDamage> epoxy glue?
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2014-02-20T18:07:01 < jon1012> it's like opaque
2014-02-20T18:07:20 < jon1012> they put it on lcd ic for example, so competitors can't see what is inside
2014-02-20T18:08:09 < jon1012> BrainDamage, maybe
2014-02-20T18:08:41 < BrainDamage> do you mean wirebonded chip on boards? (COB)
2014-02-20T18:09:02 < BrainDamage> the glue isn't just for "security" it's to protect the chip because it has no package
2014-02-20T18:09:21 < jon1012> yeah kind of, I have already seen this glue applied even when the chip had a package
2014-02-20T18:10:03 < BrainDamage> it should still be epoxy
2014-02-20T18:10:12 < jon1012> ok, thank you for the information :)
2014-02-20T18:11:09 < BrainDamage> if it's for an hobby project, car paint removal should do the job
2014-02-20T18:11:19 < BrainDamage> be careful because it'll attack the chip package too
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2014-02-20T18:11:45 < jon1012> BrainDamage, ok, thanks :)
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2014-02-20T18:11:51 < jon1012> I'll try this
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2014-02-20T19:36:41 < Laurenceb_> http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/PF259242?icmp=stm32cubemx_pron_prcube_feb2014
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2014-02-20T19:37:17 < Steffanx> Go away Laurenceb_ :P
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2014-02-20T21:18:32 < Laurenceb_> well this is fun
2014-02-20T21:18:41 < Laurenceb_> Fatfs opens my file ok
2014-02-20T21:18:46 < Laurenceb_> then says its writes ok
2014-02-20T21:18:51 < Laurenceb_> then file is empty
2014-02-20T21:23:00 < zyp> then I say ok
2014-02-20T21:30:13 < Steffanx> Laurenceb_ you just write nothing :P
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2014-02-20T21:51:02 < Laurenceb_> should i push r3 at entry to an asm function?
2014-02-20T21:55:31 < zyp> in the function or before calling it?
2014-02-20T21:55:38 < Laurenceb_> in the function
2014-02-20T21:55:41 < zyp> no
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2014-02-20T21:55:57 < Laurenceb_> so i pass 3 parameters
2014-02-20T21:56:00 < zyp> r3 is caller-save so if the caller want the value preserved, it has to push it before calling the function
2014-02-20T21:56:11 < Laurenceb_> oh
2014-02-20T21:56:45 < Laurenceb_> well that doesnt explain my issues :S
2014-02-20T21:57:19 < zyp> only r4-r11 are callee-save, so the function needs to preserve original value
2014-02-20T21:57:38 < bvernoux> EBI for ARM ;)
2014-02-20T21:57:39 < bvernoux> http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042e/IHI0042E_aapcs.pdf
2014-02-20T21:58:05 < bvernoux> r0 to r3 are scratch register
2014-02-20T21:58:12 < Laurenceb_> right
2014-02-20T21:58:49 < Laurenceb_> http://pastie.org/8753078
2014-02-20T21:58:54 < Laurenceb_> does that look ok?
2014-02-20T22:00:12 < zyp> what's the problem?
2014-02-20T22:00:56 < Laurenceb_> fatfs issues
2014-02-20T22:01:03 < Laurenceb_> wondering if there is an issue here
2014-02-20T22:01:11 < Laurenceb_> regression tests suggest maybe
2014-02-20T22:01:23 < Laurenceb_> but its hard to track down as the issue is intermittent
2014-02-20T22:01:31 < zyp> no, looks fine
2014-02-20T22:01:50 < Laurenceb_> must be something else then
2014-02-20T22:02:01 < Laurenceb_> looks like maybe memory corruption
2014-02-20T22:02:10 < bvernoux> Laurenceb_: are you sure corresponding C source code will not give the same result ?
2014-02-20T22:02:24 < Laurenceb_> bvernoux: seems unlikely
2014-02-20T22:02:51 < bvernoux> with an unrolled loop
2014-02-20T22:03:24 < bvernoux> anyway M3 suxx i prefer M4F with DSP and Float ;)
2014-02-20T22:03:33 < bvernoux> even if float are a bit slower as integer
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2014-02-20T22:09:53 < Laurenceb_> hmf wtf
2014-02-20T22:09:58 < Laurenceb_> i hate these sort of errors
2014-02-20T22:10:06 < Laurenceb_> how can there be no data in the file
2014-02-20T22:11:21 < zyp> if we should believe bvernoux, it's because you're not using the FPU
2014-02-20T22:11:55 < qyx_> very possible cause
2014-02-20T22:12:19 < qyx_> if you are writing at 1.43 byte boundary, data are not aligned properly
2014-02-20T22:12:57 < bvernoux> ARM don't care of unaligned data
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2014-02-20T22:13:16 < qyx_> trolled.
2014-02-20T22:13:17 < bvernoux> which is more problematic on other architecture
2014-02-20T22:15:11 < zyp> bvernoux, that's not true
2014-02-20T22:15:38 < zyp> bvernoux, m3/m4 can be configured to fail on unaligned accesses, and m0 doesn't support unaligned accesses at all
2014-02-20T22:16:55 < zyp> and there are only some instructions that accept unaligned
2014-02-20T22:17:28 < bvernoux> zyp: yes but we are speaking about m3 ;)
2014-02-20T22:17:44 < bvernoux> anyway good practice is to have aligned access
2014-02-20T22:18:11 < zyp> also, the joke went right over your head :)
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2014-02-20T22:46:28 < Thorn> Steffanx: no I haven't tried it yet
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2014-02-20T23:03:19 < gnomad> (2811)
2014-02-20T23:03:35 < gnomad> gah, n/m.
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2014-02-20T23:28:30 < Thorn> if you want to design a device with usb passthrough (B socket -> A socket) and the device itself needs a usb device interface, is a hub IC the only way?
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2014-02-20T23:34:11 < karlp> Thorn: only way I would think to do it,
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2014-02-20T23:45:14 < Thorn> right
2014-02-20T23:48:33 < karlp> hubs are cheap
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2014-02-20T23:55:49 < zyp> and then there's speed translation
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2014-02-21T00:44:59 < Thorn> right thanks.
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2014-02-21T01:34:59 < dongs> SLF6028T anyone wants 200. i dont like their solder pattern
2014-02-21T01:45:48 < karlp> is there a C trick to get array_size sort of macros to work on this sort of thing? http://pastebay.net/1402903
2014-02-21T01:47:18 < gxti_> karlp: give only the pointer you mean? the pointer doesn't know anything about what it's pointing at
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2014-02-21T01:47:46 < gnomad> Do you understand what an array is in C?
2014-02-21T01:48:01 < gxti_> if you have the actual symbol then the answer is yes, you can do sizeof(waveform) / sizeof(waveform[0])
2014-02-21T01:48:20 < zyp> ARRAY_LENGTH(x) is usually implemented as (sizeof(x) / sizeof(x[0]))
2014-02-21T01:48:37 < gnomad> sizeof() is a compile time thing... you might just as well use the macro...
2014-02-21T01:48:59 < zyp> sizeof(array) will be number of bytes consumed by the array, sizeof(pointers) would be size of a pointer
2014-02-21T01:49:25 < zyp> so you lose the size information once you pass it through a pointer
2014-02-21T01:49:36 < gnomad> an array is just a pointer, and if you want to know the size of it in a function, you need to pass that in along with it.
2014-02-21T01:49:53 < zyp> so you'll have to pass that separately, as a variable containing either number of elements, number of bytes or a pointer to the end
2014-02-21T01:50:17 < karlp> yeah, I tried ARRAY_LENGTH(state.outputs[channel]->waveform) the original symbal, but it wasn't seeming to work.
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2014-02-21T01:50:44 < zyp> that should work fine
2014-02-21T01:50:50 < karlp> that's what I thought,
2014-02-21T01:51:02  * karlp recleans and rebuilds and restarts gdb
2014-02-21T01:57:46 < gnomad> something that might help you understand what is going on is to run your code through just the c preprocessor...
2014-02-21T01:58:04 < karlp> no, closing netbeans and restarting it made it do what it shoudl have been doing in the first place.
2014-02-21T01:58:07 < karlp> my bad
2014-02-21T01:59:58 < ntfreak_> karlp: good read http://blog.feabhas.com/2013/11/shock-horror-i-learned-something-about-arrays-in-c/
2014-02-21T02:03:10 < karlp> some nce bits there, thanks
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2014-02-21T02:17:00 < zyp> last part was a bit amusing
2014-02-21T02:17:43 < zyp> looks ugly and rather useless
2014-02-21T02:18:11 < zyp> and I don't think I've ever seen it in practice
2014-02-21T02:18:52 < dongs> the process_array shit?
2014-02-21T02:18:54 < dongs> me neither
2014-02-21T02:19:14 < zyp> I've seen arrays packed as a single element in a struct though
2014-02-21T02:19:26 < zyp> which will even let you pass it by value
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2014-02-21T04:29:14 < gnomad> http://www.st.com/web/en/press/p3517
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2014-02-21T05:42:56 < dongs> is that the
2014-02-21T05:43:02 < dongs> oOOooOo
2014-02-21T05:43:21 < dongs> nice
2014-02-21T05:43:28 < dongs> for lazies
2014-02-21T05:43:45 < dongs> sounds like java
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2014-02-21T05:45:23 < upgrdman> didnt this software exist under another name like half a year ago?
2014-02-21T05:45:43 < upgrdman> i recall some sorry attempt at GUI pin config'ing from STM
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2014-02-21T05:52:48 < dongs> microsomethign
2014-02-21T05:52:50 < dongs> explorer?
2014-02-21T05:55:14 < upgrdman> ya
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2014-02-21T06:12:11 < emeb_mac> microexplorer works OK
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2014-02-21T06:38:24 < dongs> works just fine for me
2014-02-21T06:38:28 < dongs> i had no idea it outputs code
2014-02-21T06:38:36 < dongs> couldnt care less if it does
2014-02-21T06:38:41 < dongs> i just use it to visualize port usage
2014-02-21T07:00:41 < emeb_mac> same here.
2014-02-21T07:00:55 < emeb_mac> handy for figuring out what all you can use at the same time
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2014-02-21T07:12:28 < dongs>  At this speed we are looking at maintaining data/clock skew at less than +/-150ps which is difficult when accounting mismatch of connectors, cable, pcb traces and IC package internal routing and bounding wires with different length.
2014-02-21T07:12:32 < dongs> To give an idea, 1mm extra trace length is 100ps delay.
2014-02-21T07:12:32 < dongs> first world problems
2014-02-21T07:16:16 < emeb_mac> that's what calibrated I/O delay is for
2014-02-21T07:24:28 < dongs> more like fuck lvds
2014-02-21T07:24:28 < Thorn> isn't it more like 50ps
2014-02-21T07:24:32 < dongs> use shit with built in clock
2014-02-21T07:24:36 < dongs> i.e. waht all teh coolkids do
2014-02-21T07:24:46 < dongs> also why hdmi sucks
2014-02-21T07:24:52 < Thorn> as in ~20cm/ns
2014-02-21T07:28:24 < emeb_mac> the rule of thumb I always heard is ~1ns/foot, so 20cm/ns is about right
2014-02-21T07:28:33 < emeb_mac> that means 1cm = 50ps
2014-02-21T07:28:39 < emeb_mac> and 1mm = 5ps
2014-02-21T07:29:01 < emeb_mac> so that thing above is BS
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2014-02-21T07:38:25 < Thorn> oh lol, I reas it as 1cm. obviously wrong for 1mm
2014-02-21T07:50:23 < dongs> internet experts.
2014-02-21T07:50:53 < dongs> do electrons move at speed of light or wat
2014-02-21T07:51:55 < dongs> speed of dongs.
2014-02-21T07:54:53 < Thorn> electrons move at a few mm/s or so don't they
2014-02-21T07:54:59 < dongs> no clue
2014-02-21T07:55:20 < dongs> THE FASTER THE CLOCK THE FASTER THEY MOVE
2014-02-21T07:55:31 < dongs> so hurry up and overclock some electrons
2014-02-21T07:58:04 < dongs> http://www.wvshare.com/img/preview/RPi-B-CN-package-B_l.jpg
2014-02-21T07:58:06 < dongs> wowaaaaaaa
2014-02-21T07:58:09 < dongs> $109
2014-02-21T07:58:14 < dongs> so worth it!!11
2014-02-21T07:59:12 < Thorn> heat sinks go into the hdmi connector?
2014-02-21T07:59:24 < dongs> yes
2014-02-21T07:59:37 < dongs> because it outputs video so HOT and amazing
2014-02-21T08:08:11 < emeb_mac> lol rpi
2014-02-21T08:19:59 < Thorn> wtf googled fr4 propagation speed ole of thumb, answers range from 6"/ns to 2ft/ns
2014-02-21T08:20:12 < Thorn> >the signal along the wire under water travels at one-ninth the speed of the signal traveling along the wire suspended in the air
2014-02-21T08:23:20 < Ranewen> thanks for the delay/mm parameters :3 (i just hope they are real)
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2014-02-21T09:29:08 < dongs> sounds like troll, cuz info comes from [H]ardForum
2014-02-21T09:29:13 < dongs> tons of experts tehre
2014-02-21T09:30:59 < emeb_mac> super pro
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2014-02-21T11:32:33 < dongs> zyp: 40 fast connectors short, so it'll be like 10 cables short of 1k
2014-02-21T11:32:38 < dongs> they probably measured it by weight
2014-02-21T11:32:43 < dongs> np?
2014-02-21T11:33:03 < dongs> or should i sget them to ship 40 extra
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2014-02-21T11:41:30 < zyp> that's fine, they can just do the last ten cables without the fast connectors
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2014-02-21T12:28:25 < dongs> zyp: ok. i guess they probably ship tomorrow
2014-02-21T12:28:33 < dongs> so you should probably give me instructions for destination
2014-02-21T12:28:34 < dongs> so i can relay it
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2014-02-21T12:32:53 < zyp> yes, ok
2014-02-21T12:33:21 < zyp> hmm, the other guy haven't got back to me about how many he needs yet, I'll bug him about it
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2014-02-21T12:34:56 < zyp> do you have a shipping cost yet?
2014-02-21T12:35:01 < dongs> http://thingsthatarecheaperthanwhatsapp.tumblr.com/
2014-02-21T12:35:02 < dongs> no
2014-02-21T12:35:07 < dongs> weight tomorow
2014-02-21T12:35:30 < zyp> how much was the original estimate? $75 for shipping 500 to norway?
2014-02-21T12:35:47 < Laurenceb__> irc is cheaper than it
2014-02-21T12:36:08 < dongs> http://24.media.tumblr.com/4a7ac8a41f2484eea97a7f9821b8a6c2/tumblr_n1a4wtKURU1ttzatvo1_400.png
2014-02-21T12:36:12 < dongs> lol
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2014-02-21T12:39:21 < Thorn> seeed shipped my boards and a bunch of other crap. still no fedex tracking for the buydisplay package.
2014-02-21T12:42:30 < gnomad> holy fuck, 19b for a glorified IRC?
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2014-02-21T13:31:26 < dongs> zyp: was tehre one? I dont remember.
2014-02-21T13:42:44 < zyp> 10:42:16 < dongs> it'd have to be DHL or something and she doesnt know exact weight but 5-6kg will be something like 75bucks
2014-02-21T13:44:28 < dongs> okthen its that
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2014-02-21T15:53:46 < beaky> hello
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2014-02-21T16:15:26 < dongs> zyp: tweet received
2014-02-21T16:15:30 < zyp> good
2014-02-21T16:15:47 < zyp> oh, and the ones without fast connectors should go to me
2014-02-21T16:16:04 < dongs> OK
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2014-02-21T16:45:51 < Laurenceb_> dongs: know anything about _FS_TIMEOUT in fatfs?
2014-02-21T16:45:58 < dongs> nup
2014-02-21T16:46:01 < Laurenceb_> its set to 1 second by default
2014-02-21T16:46:09 < Laurenceb_> im wondering if it should be increased
2014-02-21T16:46:11 < dongs> sounds reasonable
2014-02-21T16:46:20 < dongs> if your sd card doesnt do shit for a second, time for a new one
2014-02-21T16:46:22 < Laurenceb_> some highly fragmented cards are failing
2014-02-21T16:46:26 < Laurenceb_> lol
2014-02-21T16:46:40 < Laurenceb_> i havent been able to replicate the issue
2014-02-21T16:47:16 < Laurenceb_> a couple of users have reported the issue, trying to workout how fatfs copes with bad fragmentation
2014-02-21T16:47:55 < jpa-> isn't FS_TIMEOUT just for the multithread locking?
2014-02-21T16:48:05 < Laurenceb_> i think so
2014-02-21T16:48:12 < Laurenceb_> but im not sure if it runs all the time
2014-02-21T16:49:17 < jpa-> never seen anyone actually use that value, real men just hardcode the timeout in their glue code
2014-02-21T16:50:12 < Laurenceb_> heh
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2014-02-21T17:11:40 < PaulFertser> Laurenceb_: sd cards have an internal flash translation layer, manufacturer-specific, and you can't easily reproduce anything because of that. I've seen "bad" SD cards that were very slow at reading, but they were sort of "cured" by dd'ing zeros to the whole partition.
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2014-02-21T17:13:41 < mmp> Hello, I have stm32f3 discovery board, and I would like to use its ADC+opamps to read microphone, is it good idea, or should I go for external module with preamp and mic?
2014-02-21T17:16:23 < dongs> you can try it but it'll probly suck
2014-02-21T17:16:52 < mmp> well, mic + some capacitor/resistor to power it
2014-02-21T17:16:58 < mmp> you mean like distorted signal?
2014-02-21T17:17:25 < mmp> or simply low resolution/weak preamp?
2014-02-21T17:19:01 < jpa-> probably ok for speech etc, not so good if you need high-quality audio
2014-02-21T17:19:18 < dongs> when a 96/24 codec like some cirrus logic shit is $1-2 why bother?
2014-02-21T17:20:16 < mmp> I need faster ADC, I would like to do some experiment with ultrasound
2014-02-21T17:20:33 < mmp> and I need it running in-sync
2014-02-21T17:20:47 < mmp> (thus my stm32 board will end up with 4 mics at ADCs)
2014-02-21T17:21:18 < mmp> and also some notoric playing with 'where does the sound come from' etc.
2014-02-21T17:21:54 < mmp> if you have any other ideas about how to construct in-sync audio recorder with reasonable sample rate, I'm all yours :)
2014-02-21T17:22:48 < mmp> my target sampling rate was around 250kHz
2014-02-21T17:22:56 < mmp> (per channel)
2014-02-21T17:23:50 < mmp> in other words, I don't need high-quality audio, but I need reasonable quality to do audio processing
2014-02-21T17:24:47 < Laurenceb_> PaulFertser: i'm using the same cards for everything
2014-02-21T17:24:52 < Laurenceb_> Sandisk 4GB ones
2014-02-21T17:26:48 < PaulFertser> Laurenceb_: yet FAT fragmentation itself doesn't tell much about the underlying FTL state, so you probably need to let it run some special code that is similar to the harshest of your usecases for a while to get it to a state when the card itself starts acting silly.
2014-02-21T17:27:14 < Laurenceb_> hmm
2014-02-21T17:27:19 < Laurenceb_> yeah tricky :(
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2014-02-21T17:41:44 < mmp> dongs: I did some research right now, but could you point me to some hobby-usable cirrus logic codec?
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2014-02-21T17:43:32 < dongs> mmp: well, not cl, but UDA1380 for example
2014-02-21T17:43:37 < dongs> tons of cheap breakouts on ebay too
2014-02-21T17:43:47 < dongs> http://www.wvshare.com/product/UDA1380-Board.htm like this
2014-02-21T17:44:04 < dongs> (nxp)
2014-02-21T17:44:19 < Steffann> wwwwwvshare :D
2014-02-21T17:45:27 < Steffann> That thing.. "Stereo audio coder-decoder for MD, CD and MP3".. I always thought it could encode/decode mp3
2014-02-21T17:45:38 < Steffann> until i tried to find info about that in the datasheet
2014-02-21T17:45:45 < mmp> hmm, I hoped for higher sampling frequency, but in the worst case, it might do...
2014-02-21T17:46:26 < mmp> ugh, and I think stm32 has just i2s port
2014-02-21T17:46:30 < mmp> that might be problem as well
2014-02-21T17:49:24 < dongs> one or two at most.
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2014-02-21T17:50:17 < mmp> okay, it has twice the i2s; that might work
2014-02-21T17:51:07 < mmp> if it's able to do full-duplex, it might sort out my problems
2014-02-21T17:51:24 < dongs> just check 'audio codec' on digikey and filter by  what you want.
2014-02-21T17:51:26 < dongs> there's a ton of htem.
2014-02-21T17:51:37 < dongs> there might even be some wiht more than one input
2014-02-21T17:52:10 < mmp> good point
2014-02-21T17:52:16 < dongs> http://www.digikey.com/product-detail/en/PCM3168APAPR/296-31710-1-ND/3505187
2014-02-21T17:52:17 < dongs> 6 inputs
2014-02-21T17:52:21 < mmp> (looks like it's able to record only at 55kHz)
2014-02-21T17:52:38 -!- PaulFertser [paul@paulfertser.info] has quit [Ping timeout: 246 seconds]
2014-02-21T17:52:52 < mmp> well, I'm at hobby level, so I can't afford soldering this kind of things ...
2014-02-21T17:53:11 < dongs> http://www.digikey.com/product-detail/en/UDA1341TS%2FN1,512/568-1154-5-ND/735767
2014-02-21T17:53:21 < dongs> you cant solder tqfp/ssop?
2014-02-21T17:53:26 < dongs> what do you expet it to be in, dip?
2014-02-21T17:53:31 < dongs> ^ 4 inputs on that on e
2014-02-21T17:54:19 < mmp> in ideal case, breakout board with DIP-spaced pins would be the best
2014-02-21T17:54:23 < zyp> mmp, how high sampling frequency do you need?
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2014-02-21T17:54:51 < mmp> zyp: basically audio processing in ultrasound range, so I hoped for 250kHz
2014-02-21T17:55:06 < dongs> is that even gonna happen
2014-02-21T17:55:20 < dongs> so you'd need something that can do 500khz?
2014-02-21T17:55:22 < dongs> good luck
2014-02-21T17:55:52 < mmp> I can live with lower frequencies, but the more, the more resilient to noise at audible frequencies
2014-02-21T17:56:19 < zyp> you probably have to look at other stuff than audio parts then
2014-02-21T17:56:22 < mmp> it's just hobby project, so I can change specs according to needs
2014-02-21T17:56:28 < zyp> since audio parts are designed for audible frequencies
2014-02-21T17:56:51 < mmp> well, that's why I was playing with stm32f3's ADCs directly
2014-02-21T17:56:53 < zyp> are you going to use it for data transmission or what?
2014-02-21T17:57:26 < mmp> just audio processing (identifying echoes, direction where the sound did come from, etc.)
2014-02-21T17:57:40 < zyp> making a sonar?
2014-02-21T17:57:48 < mmp> very simple, though
2014-02-21T17:58:11 < zyp> well, at that point you don't care about audio fidelity, so there's no reason you shouldn't use the internal ADCs
2014-02-21T17:58:29 < mmp> well, I still do need opamps
2014-02-21T17:58:34 < mmp> or mic breakout board
2014-02-21T17:58:36 < mmp> s
2014-02-21T17:59:06 < zyp> what kind of mics are you thinking about using that'll do ultrasound?
2014-02-21T17:59:38 < mmp> well, so far I'm stuck with stock mics, so I'll do some measurements and see how bad they do
2014-02-21T18:00:05 < mmp> I hope that electret mics with small diameter might work at least a little
2014-02-21T18:00:10 < zyp> I'd expect audio mics to reject ultrasonic frequencies
2014-02-21T18:00:19 -!- PaulFertser [paul@paulfertser.info] has quit [Ping timeout: 246 seconds]
2014-02-21T18:00:26 < zyp> but I don't know, I don't have any experience with it
2014-02-21T18:00:32 < mmp> neither I do
2014-02-21T18:00:47 < mmp> that's why I want to do the measurements first
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2014-02-21T18:00:53 < beaky> hello
2014-02-21T18:00:55 < zyp> Steffann, didn't you do some ultrasonic stuff once? maybe you have something to say
2014-02-21T18:01:23 < mmp> zyp: but I'm not sure whether the stm32's opamps will be sufficient anyway
2014-02-21T18:01:41 < beaky> the opamps aren't too bad
2014-02-21T18:02:17 < beaky> they kick the ass of lm741
2014-02-21T18:03:27 < mmp> :) I'm more computer science than electrotechnics person, so I don't have much prior experience with opamps
2014-02-21T18:03:27 < madisk> condenser mics go well over 20kHz. I think I've seen some with usable response at 30kHz
2014-02-21T18:03:28 < beaky> as long as you respect and derate the limitations listed on the datasheet (finite slew, finite GBW)
2014-02-21T18:03:32 < madisk> but 250kHz is nuts.
2014-02-21T18:04:24 < mmp> madisk: I don't want to listen to 125 kHz sine wave, I just want to have signal sampled with reasonable reserve
2014-02-21T18:04:44 < mmp> having 96kHz sample rate and 40kHz sine wave is nuts
2014-02-21T18:04:49 < madisk> mmp: you're expecting to get a 125kHz signal out of a microphone ?
2014-02-21T18:05:02 < mmp> of course not :)
2014-02-21T18:05:11 < madisk> ok. you've got me confused.
2014-02-21T18:05:21 < mmp> sorry, I'm sometimes switching ideas too fast
2014-02-21T18:05:46 < mmp> I just want to have ultrasonic signal reconstructed in some reasonable form
2014-02-21T18:06:02 < madisk> define 'ultrasonic'
2014-02-21T18:06:24 < mmp> frequency between 20 and 40 (maybe 60) kHz
2014-02-21T18:06:58 < madisk> doubt if there's such a microphone.
2014-02-21T18:07:04 < mmp> I don't want medical ultrasound
2014-02-21T18:07:07 < madisk> ultrasonic mics generally pick up a single frequency
2014-02-21T18:07:31 < madisk> medical ultrasound, sonar etc. they all use a single frequency
2014-02-21T18:07:35 < mmp> I know, but in theory, small mics pointed to the right direction should pick up ultrasound as well
2014-02-21T18:07:46 < madisk> maybe
2014-02-21T18:08:00 < mmp> so as a proof of concept, that might suffice
2014-02-21T18:08:35 < mmp> and when I grow up, I'm going to get some fine-tuned piezo transducers
2014-02-21T18:09:58 < mmp> as I said, it's just an expermental hobby project, thus I count on wide spectrum of failures
2014-02-21T18:10:08 < madisk> you should start with a mic datasheet
2014-02-21T18:10:29 < mmp> I did that already, most of the mics I have seem to do fine at 20kHz, which will be my start
2014-02-21T18:10:55 < madisk> you're not making any sense. 20kHz and 40kHz are a bit different.
2014-02-21T18:11:28 < mmp> argh, sorry, I'm messing up sampling frequencies and transmitted signal
2014-02-21T18:11:30 < mmp> my fault
2014-02-21T18:12:49 < Steffann> not much to say zyp.. i used some ultrasonic transducers for everything
2014-02-21T18:13:01 < mmp> my wish is that the project operates in ultrasonic band, but if tests will be too bad, I'm probably going to shift operation to audible range
2014-02-21T18:13:30 < synic> so, if I was interested in getting one of these nucleo boards, which one would be best to go with for a beginner?
2014-02-21T18:13:42 < synic> I guess it just matters what I care about most, performance or power usage?
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2014-02-21T18:14:52 < mmp> madisk: mostly, I want a device that will be able to correctly record 4 analog inputs in sync.
2014-02-21T18:15:00 < synic> maybe the F103RB would be a good choice for right in the middle?
2014-02-21T18:16:14 < mmp> I'm aware that I will be facing serious problems on the audio part of the device, that's why I have not any exact decisions there; after I'll see behavior of the devices, I'll decide which way to take
2014-02-21T18:16:48 < mmp> first iteration of the project was laptop-based sonar (using laptop's speakers and mics)
2014-02-21T18:16:59 < mmp> I guess it will be improvement anyway
2014-02-21T18:17:37 < Steffann> should be possible.. didn't some "hack" use this?
2014-02-21T18:17:59 < mmp> hmm "hack" ?
2014-02-21T18:18:38 < Steffann> It was more research. :P
2014-02-21T18:18:45 < Steffann> o nevermind :P
2014-02-21T18:19:44 < mmp> (I just don't know what do you mean by "hack")
2014-02-21T18:20:08 < Steffann> nah, some research about data communication using just speakers + mics
2014-02-21T18:20:13 < Steffann> in the ultrasonic range.
2014-02-21T18:20:29 < mmp> ahh, yeah, and practical application in authentication
2014-02-21T18:20:53 < Steffann> ( there is also this story about some actual virus/spyware/bios that used this to communicate with other machines )
2014-02-21T18:21:18 < mmp> and google bought them and the name is SlickLogin :)
2014-02-21T18:21:28 < mmp> wow, that's really low-level communication :)
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2014-02-21T18:22:31 < Steffann> Anyway, i guess some mics + speaker could be a nice way to try something.
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2014-02-21T18:22:54 < mmp> well, yes, but after doing prototype on laptop, I'm going to move to something more reliable
2014-02-21T18:22:55 < Steffann> If it works it shouldn't be that hard to make something uc based.
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2014-02-21T18:23:26 < mmp> the data were too distorted by chasis resonance (and OK, by my lack of knowledge in DSP area as well)
2014-02-21T18:23:56 < mmp> and data recorded on 96kHz were quite different for left and right audio channel
2014-02-21T18:24:18 < mmp> (as if two really different circuits were used for stereo mics)
2014-02-21T18:24:40 < mmp> so I'm gonna to do that the hard(-ware) way
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2014-02-21T18:25:45 < beaky> i wish i knew dsp
2014-02-21T18:26:00 < Steffann> You're never too old to learn beaky
2014-02-21T18:26:01 < beaky> i know nothing about signal processing
2014-02-21T18:26:20 < beaky> the only thing i know about dsp is that it involves wicked math
2014-02-21T18:26:38 < beaky> and than the stm32f3 apparently supports some hardware-accelerated dsp :D
2014-02-21T18:26:42 < Steffann> Go follow some courses
2014-02-21T18:26:43 < Steffann> online
2014-02-21T18:26:50 < beaky> there are online dsp classes?
2014-02-21T18:26:51 < madisk> beaky! buy TI 15GHz DSP
2014-02-21T18:27:48 < mmp> well, I was not able to set up correctly a high-pass filter, so...
2014-02-21T18:28:23 < mmp> and accidentally found out that mi speakers produce pulse with _really_ different frequency as I expected
2014-02-21T18:29:16 < mmp> another scary thing which makes me thing that I'll be safer if I control audio manually
2014-02-21T18:29:42 < Claude> mmp, interesting but not very detailed read on sonar and echolocation : http://books.google.de/books?id=xx368g1W7aUC&lpg=PA186&ots=G51cWzdsHQ&dq=beep%20ping%20buzz%20radar&hl=de&pg=PA79#v=onepage&q=beep%20ping%20buzz%20radar&f=false
2014-02-21T18:29:45 < Steffann> beaky let's try: http://lmgtfy.com/?q=dsp+course+online
2014-02-21T18:30:04 < mmp> beaky: dspguide.com is also quite nice resource
2014-02-21T18:31:13 < mmp> Claude: looks nice, thank you
2014-02-21T18:31:35 < mmp> I wanted to read some Dokmanic's papers about similar topics
2014-02-21T18:31:56 < Steffann> That book looks nice Claude
2014-02-21T18:32:37 < mmp> looks like I have new good-night reading
2014-02-21T18:33:19 < Claude> yeah got it for christmas a couple of years ago :) fun to read because the author also explains the evolution of radar and sonar (WWII)
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2014-02-21T18:53:35 < Laurenceb_> http://www.youtube.com/watch?v=hrdlnurvZjU
2014-02-21T19:00:04 < emeb> note to self: don't try to drive in Russia
2014-02-21T19:01:32 < dongs> LOL
2014-02-21T19:01:35 < dongs> got into the car and took off
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2014-02-21T19:10:35 < beaky> hello
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2014-02-21T19:14:38 < mmp> btw, thanks a lot for advice
2014-02-21T19:15:03 < mmp> Stefann, but where do you get ultrasonic transducers from? I could not find any reasonable source
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2014-02-21T19:41:27 < Steffann> farnell mmp. Just some 40kHz transducers
2014-02-21T19:41:31 -!- madisk [madist@unaffiliated/madist] has quit [Quit: Leaving]
2014-02-21T19:41:33 < Steffann> ( they were pretty expensive )
2014-02-21T19:42:03 < Steffann> And only a bandwidth of 2kHz iirc.
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2014-02-21T19:58:05 < Laurenceb_> ugfx more like uglyfx
2014-02-21T19:58:17 < Laurenceb_> or uglyfux
2014-02-21T20:00:18 < Steffann> because....
2014-02-21T20:05:03 < zyp> Steffann, Laurenceb_ tried to use it to show a picture of himself
2014-02-21T20:05:28 < Steffann> :D
2014-02-21T20:05:44 -!- Steffann is now known as Steffanx
2014-02-21T20:06:05 < zyp> what's the deal with the n and the x?
2014-02-21T20:06:31 < Steffanx> Steffanx is my original nick, Steffann is my nick when Steffanx is in use.
2014-02-21T20:06:46 < gxti_> it's pronounced "stef-fanx" as in thanks
2014-02-21T20:06:47 < Steffanx> no automatic ghosting.
2014-02-21T20:07:15 < Steffanx> it's Stef-fan-x. At least, I never thought about it as you just did.
2014-02-21T20:07:47 -!- barthess [~barthess@185.6.25.220] has joined ##stm32
2014-02-21T20:07:48 < Steffanx> No need to thank me over anything, so: Stef-fan-x it is.
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2014-02-21T20:09:04 < Steffanx> Hmm, what is the easiest way to communicate with chinese. In this case: an ebay seller.
2014-02-21T20:09:43 < zyp> write english? :p
2014-02-21T20:09:55 < Steffanx> yes, but sometimes they fail to understand
2014-02-21T20:10:08 < Steffanx> or dont want to.
2014-02-21T20:10:39 < gxti_> doesn't leave many options then
2014-02-21T20:12:38 < Steffanx> And this is not an "i want my money back" case :(
2014-02-21T20:12:47 < Steffanx> This is an "i want the product"-case
2014-02-21T20:14:00 < zyp> sounds more like a «you can't have it»-case
2014-02-21T20:14:44 < Steffanx> Yes, or "I sold you this product for $x, but it should've been $2*x, so im not going to send it"-case :P
2014-02-21T20:15:03 < Steffanx> it was a "LAST ONE" item ( i never believe that though ), not its back in the store with the price doubled.
2014-02-21T20:15:08 < Steffanx> *now
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2014-02-21T20:15:21 < Steffanx> <3 ebay.
2014-02-21T20:15:55 < Steffanx> Nah, we'll see. :)
2014-02-21T20:16:26 < Steffanx> I do know FPC connectors are too expensive.
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2014-02-21T20:41:49 < Ranewen> hi beaky ..
2014-02-21T20:42:22 < beaky> hello
2014-02-21T20:43:06 < Ranewen> beaky: did u find my videos useful ?
2014-02-21T20:44:03 < beaky> yes i am now a master of microcontroller design
2014-02-21T20:44:25 < beaky> i wish he did a video on RTOS tho :(
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2014-02-21T20:45:58 < Ranewen> as you say "master of microcontroller design" :D it sounds so.. so...
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2014-02-21T21:25:04 < Steffanx> Laurenceb_, did you figure it out yet?
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2014-02-22T02:08:21 < ds2> anyone tried generating composite video?
2014-02-22T02:09:20 < gnomad> you mean NTSC/PAL?
2014-02-22T02:10:56 < qyx_> shouldn't be a problem
2014-02-22T02:11:08 < qyx_> if you want just b/w, spi is a good option
2014-02-22T02:11:13 < qyx_> with dma
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2014-02-22T02:30:16 < ds2> yes
2014-02-22T02:30:25 < ds2> NTSC/PAL
2014-02-22T02:30:53 < ds2> is VSYNC just a 3 line lenght long period of ground?
2014-02-22T02:31:30 < qyx_> i think there are 3 levels
2014-02-22T02:31:42 < qyx_> some like 0V, 0.05V and 0.7V or so
2014-02-22T02:32:08 < qyx_> http://upload.wikimedia.org/wikipedia/commons/8/83/Composite_Video.svg
2014-02-22T02:32:22 < ds2> I have seen those links
2014-02-22T02:32:31 < dongs> ds2: i have
2014-02-22T02:32:36 < ds2> sync is suppose to be always at 0V... black is at about 0.3V
2014-02-22T02:32:42 < ds2> dongs: what exactly is VSYNC?
2014-02-22T02:32:55 < ds2> can't seem to get a clear description of that. HSYNC is pretty straight forward
2014-02-22T02:34:15 < dongs> trying to find code i used for it.
2014-02-22T02:34:31 < ds2> 'k
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2014-02-22T02:37:01 < dongs> ds2: http://www.ni.com/white-paper/4750/en/ this covers vsync
2014-02-22T02:37:08 < dongs> had this in my bookmark when i was  working on osd
2014-02-22T02:39:13 < ds2> think I read that...let me check again
2014-02-22T02:39:18 < dongs> code = referenced "thinner client"
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2014-02-22T02:41:04 < ds2> yep. read that
2014-02-22T02:41:27 < ds2> the vsync don't look any different from hsync other then that it is black
2014-02-22T02:41:36 < dongs> and urrite
2014-02-22T02:42:21 < ds2> Ohhhh
2014-02-22T02:42:35 < dongs> you only need 2 resistors to generate ntsc crap
2014-02-22T02:42:42 < dongs> 240R and 590R
2014-02-22T02:42:51 < dongs> you can stick those 2 on timer outputs
2014-02-22T02:43:12 < dongs> and perhaps a 75R to ground off same line
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2014-02-22T02:43:34 < qyx_> to ground?
2014-02-22T02:43:40 < dongs> yes
2014-02-22T02:44:53 < ds2> that assumes your GPIO has enough drive
2014-02-22T02:45:04 < dongs> well it better
2014-02-22T02:45:10 < dongs> you can always buffer it?
2014-02-22T02:45:29 < qyx_> i though you have to put series 75 resistor at the driver
2014-02-22T02:45:34 < ds2> I might rather go the expensive way - a 3 way mux + emitter followers
2014-02-22T02:45:38 < qyx_> like http://i.stack.imgur.com/PCHQD.gif
2014-02-22T02:45:55 < ds2> the gpio just drives the mux controls and each mux channel has a emitter follower to generate the voltages with enough drive
2014-02-22T02:46:00 < qyx_> and it seems most of the people do this that way
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2014-02-22T02:47:10 < qyx_> *it this
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2014-02-22T02:47:43 < dongs> i have a video switcher after cvbs gen
2014-02-22T02:47:48 < ds2> that looks nifty
2014-02-22T02:47:50 < dongs> which does have 75R on the output like that.
2014-02-22T02:48:35 < dongs> anyway, have -> had because i dropped video generation in latest hardware since i only really n eeded osd and it was wasting pins I could use for other shit
2014-02-22T02:48:58 < noisetonepause> i have some code running on an stm32f4, attached gdb over jtag with openocd, and i've set a breakpoint on a dma interrupt handler, but gdb isn't breaking.. do i need to do something special for gdb to break on interrupts, or is it because my interrupt is never triggered?
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2014-02-22T02:49:42 < dongs> the latter
2014-02-22T02:49:57 < dongs> (and the fact that youre using gdb + openocd both of which suck)
2014-02-22T02:50:31 < noisetonepause> i'll look at my code again then, thanks
2014-02-22T02:51:04 < dongs> is DMA even happening?
2014-02-22T02:51:13 < dongs> did you enable that interrupt bit?
2014-02-22T02:51:19 < dongs> for DMA_TC or whatever
2014-02-22T02:56:00 < noisetonepause> argh
2014-02-22T02:56:09 < noisetonepause> as always, stupid programmer error :)
2014-02-22T02:56:38 < dongs> lunix does that to you
2014-02-22T02:57:26 < Ranewen> so what do you use master dongs
2014-02-22T02:58:17 < dongs> windows 8 pro
2014-02-22T02:58:34 < Ranewen> you must like it nice and slow..
2014-02-22T02:58:36 < noisetonepause> dongs: you like it?
2014-02-22T02:58:38 < Ranewen> sorry not my type
2014-02-22T02:58:46 < dongs> Ranewen: lol @ nice and slow.
2014-02-22T02:58:50 < dongs> Ranewen: my hardware isn't from last decade
2014-02-22T02:58:52 < dongs> so its fast
2014-02-22T02:59:02 < dongs> i understand that lunix only supports i386, but, most people moved on
2014-02-22T02:59:29 < ds2> not windows 8 amateur?
2014-02-22T02:59:47 < madist> now you've upset the lunix fanbois
2014-02-22T03:00:39 < noisetonepause> what a weird place this
2014-02-22T03:01:19 < noisetonepause> i join, ask a simple question where i mention what software i use because it's relevant to the question, suddenly it's os wars?
2014-02-22T03:01:27 < noisetonepause> you'd think this was freenode!
2014-02-22T03:01:38 < Ranewen> stfu
2014-02-22T03:02:30 < dongs> lewl
2014-02-22T03:02:31 < Thorn> it's ##stm32, pretty famous by now
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2014-02-22T03:03:14 < noisetonepause> i'd not actually heard of it before..
2014-02-22T03:10:20 < dongs> http://www.ti.com/product/lmz12001 haha the lazy guys dcdc
2014-02-22T03:13:14 < Thorn> $4.25 @1k units? pretty sure you can do cheaper with a normal regulator & passives
2014-02-22T03:13:27 < dongs> no fucking shit, thats why "lazy guys dcdc"
2014-02-22T03:13:30 < Thorn> at 1A
2014-02-22T03:13:39 < dongs> the RT shit i use is .90c/ea in single qtys
2014-02-22T03:13:46 < dongs> + .15c for coil + 0 for passives
2014-02-22T03:13:47 < dongs> done
2014-02-22T03:14:05 < dongs> and its a 3A reg
2014-02-22T03:15:49 < dongs> RT7257
2014-02-22T03:16:29 < dongs> i use B version @ 1.2mhz switching
2014-02-22T03:16:56 < Thorn> I think my new regular combo (buck to 5V + 3.3V ldo) is ~$3 in local single unit prices
2014-02-22T03:17:16 < Thorn> should be much less @ 1k
2014-02-22T03:26:43 < dongs> http://www.onsemi.com/PowerSolutions/product.do?id=NCP1532 i used this in a few projs
2014-02-22T03:28:35 < Thorn> I'm currently using MCP16301
2014-02-22T03:28:57 < dongs> ya its in my gogole click history
2014-02-22T03:29:00 < dongs> you must have tweeted that before
2014-02-22T03:29:15 < ds2> $4.25 but no inductor
2014-02-22T03:29:17 < Thorn> also looked at NCP1521 but it has Vin max = 5.5V
2014-02-22T03:29:25 < dongs> right
2014-02-22T03:31:21 < dongs> attn GargantuaSauce https://www.youtube.com/watch?v=af7XkgxzmXE
2014-02-22T03:33:44 < Ranewen> why would one make 3d printer based on this design
2014-02-22T03:35:52 < zyp> I like how it looks
2014-02-22T03:36:34 < zyp> but I don't know about the accuracy
2014-02-22T03:38:17 < Ranewen> and he made a 3d printer of it
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2014-02-22T04:36:43 < ds2> fists of fury?
2014-02-22T04:47:22 < emeb_mac> toes of rubber
2014-02-22T04:56:38 < dongs> hm
2014-02-22T04:56:46 < dongs> i dont have 6uh coil, but have 3.6 or 10
2014-02-22T04:56:50 < dongs> which would be better substitute?
2014-02-22T04:56:52 < dongs> just proto
2014-02-22T04:57:22 < emeb_mac> depends on what you're doing with it
2014-02-22T04:57:30 < dongs>  switcher
2014-02-22T04:58:26 < emeb_mac> hmmm...
2014-02-22T04:59:47 < emeb_mac> probably go with the smaller one
2014-02-22T04:59:58 < emeb_mac> but you'll likely get less current from it
2014-02-22T05:00:05 < dongs> thats fine
2014-02-22T05:00:08 < dongs> i only need like 100mA
2014-02-22T05:00:33 < emeb_mac> ripple might be higher too
2014-02-22T05:00:42 < dongs> we'll see
2014-02-22T05:01:53 < dongs> fuck. wifecop set all teh fucking aircons in the house on timer
2014-02-22T05:01:56 < dongs> morning house draw = 8kW
2014-02-22T05:02:18 < dongs> dumb bitch + evn dumber for not doing central hvac and instead having outside units in every fucking room
2014-02-22T05:02:32 < dongs> "oh but nobody in japan does central heating"
2014-02-22T05:02:36 < dongs> yeah, no shit, because they're all dumb fucks
2014-02-22T05:06:04 < qyx_> your grid must be happy with all those switching compressors
2014-02-22T05:06:14 < dongs> exactly
2014-02-22T05:06:37 < dongs> i think we got liek 10 or something aircon units
2014-02-22T05:06:56 < dongs> duno how many were on but the kW spike is retarded
2014-02-22T05:08:22 < dongs> http://i.imgur.com/BswnWS9.jpg
2014-02-22T05:09:33 < zyp> what's 0 on he graph?
2014-02-22T05:09:50 < dongs> zero = nothing is on??
2014-02-22T05:10:37 < zyp> I don't understand how you have both positive and negative? do you generate power? :p
2014-02-22T05:10:41 < dongs> yes
2014-02-22T05:10:49 < zyp> photovoltaic?
2014-02-22T05:10:56 < dongs> right
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2014-02-22T05:31:00 < dongs> well switching is making 5V and ldo after it is making 3.3V
2014-02-22T05:31:02 < dongs> so i didnt fuck up too badly
2014-02-22T05:32:22 < zyp> would be better if you had the switcher make 3.3V and the ldo after it make 5V
2014-02-22T05:35:00 < Thorn> your buck converter runs in DCM because Iout is too low. how do you bring it back into CCM?
2014-02-22T05:35:16 < Thorn> ("increase Iout" is not a good answer)
2014-02-22T05:49:23 < dongs> i did some pro prototyping today i.imgur.com/fEgCJN6.jpg
2014-02-22T05:49:25 < dongs> ugh
2014-02-22T05:49:28 < dongs> http://i.imgur.com/fEgCJN6.jpg
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2014-02-22T05:57:46 < emeb_mac> RF pr0n: https://dl.dropboxusercontent.com/u/17017364/2014-02-13%2018.01.15.jpg
2014-02-22T05:59:11 < qyx_> dongs: whats that
2014-02-22T05:59:35 < dongs> qyx_: 2801 / 2811 sdcard player
2014-02-22T06:00:11 < qyx_> and these rj45?
2014-02-22T06:00:44 < Thorn> as in tms320f2801?
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2014-02-22T07:01:32 < emeb_mac> a whole box full of mini-circuits
2014-02-22T07:39:43 < dongs> box of mini dongs
2014-02-22T07:39:50 < dongs> k time to add serial console to jewpad adapter
2014-02-22T07:40:09 < dongs> some hacker wants to expose photos with backlight
2014-02-22T07:40:16 < dongs> and presumably by displaying crap on the lcd
2014-02-22T07:40:19 < dongs> does that evne work???
2014-02-22T07:45:21 < emeb_mac> what - shut off backlight, change display then turn on backlight
2014-02-22T07:45:28 < emeb_mac> "conceal / reveal"
2014-02-22T07:45:31 < dongs> right
2014-02-22T07:45:37 < dongs> but why would someone do that
2014-02-22T07:45:41 < emeb_mac> yeah
2014-02-22T07:45:56 < emeb_mac> seems that regular fade-to-black would be fine
2014-02-22T07:48:02 < dongs> no i mean exposing photos with lcd
2014-02-22T07:48:59 < emeb_mac> oh - actual silver-halide photography. wtf?
2014-02-22T07:49:19 < dongs> yeah like photo paper. whatever the fuck thats made out of.
2014-02-22T07:49:20 < dongs> in a darkroom.
2014-02-22T07:49:59 < emeb_mac> sounds so retro
2014-02-22T07:53:08 < Thorn> contact printing?
2014-02-22T07:53:49 < dongs> no idea
2014-02-22T07:53:59 < emeb_mac> wonder how well that works when there's a few mm of glass between the LCD and photo paper...
2014-02-22T07:54:44 < Thorn> contact prints are made by pressing film and paper together
2014-02-22T07:54:58 < madist> it won't work at all
2014-02-22T07:55:01 < Thorn> between 2 layers of glass or something like that
2014-02-22T07:55:14 < dongs> Thorn: oh, so hes just using the shit as controllable exposure light
2014-02-22T07:55:15 < dongs> ?
2014-02-22T07:55:38 < Thorn> I only know what you said
2014-02-22T07:55:42 < dongs> same here.
2014-02-22T07:55:51 < Thorn> any process description anywhere?
2014-02-22T07:56:02 < upgrdman> anyone know how to calculate the angle of a caster based on its original angle, and the distance and angle of movement since then?
2014-02-22T07:58:35 < Thorn> also remember that when exposing PCBs you place the transparency film printed side down so there's no distance at all between the printed mask and photoresist
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2014-02-22T08:23:25 < Thorn> complaining to eastrising. still no tracking
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2014-02-22T09:04:59 < Thorn> lol 2Gbit DDR3 sdrams cost the same as 16Mbit SDR sdrams
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2014-02-22T09:25:43 < emeb_mac> that's because SDR is rare and valuable
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2014-02-22T10:23:08 < dongs> zyp: see email tweets. need phone#s for both (can just troll something for usa if you dont have it, or put yours down +countrycode)
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2014-02-22T12:51:49 < dongs> zyp: solved phone#, disgregard that
2014-02-22T12:51:53 < dongs> stuff should be shipped.
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2014-02-22T13:08:48 < dongs> http://forum.bongofish.co.uk/index.php?topic=2379.0
2014-02-22T13:12:23 < Steffanx> yay
2014-02-22T13:12:48 < madist> are there pictures on that page ?
2014-02-22T13:13:33 < Steffanx> yes.
2014-02-22T13:13:46 < Steffanx> sfw pictures ;)
2014-02-22T13:14:18 < Steffanx> The soldering profile document of ST says for Tpeak "Package dependant, see temperature indicated on box label." .. where to find the actually peak temperature?!
2014-02-22T13:14:33 < Steffanx> Im not sure what they mean by "see temperature indicated on box label"
2014-02-22T13:16:56 < madist> why does he call it a 'vga controller' ? its just a feedthrough socket ?
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2014-02-22T13:29:16 < NULL___> can some one explain me how to check the clock frequency of stm32 with MCO pin
2014-02-22T13:33:16 < dongs> Steffanx: isnt it normally like 260 or so
2014-02-22T13:33:27 < dongs> NULL___: just.. enable mco with known parameters, and measure it?
2014-02-22T13:33:33 < dongs> on a scope or whatever
2014-02-22T13:33:40 < dongs> ie make it output sysclk or sysclk2 or wahtever
2014-02-22T13:37:54 < NULL___> thanks
2014-02-22T13:38:29 < Thorn> frequency counter is better
2014-02-22T13:39:00 < dongs> i dont own one.
2014-02-22T13:39:43 < NULL___> frequency counter? howz that, just incrementing in while ?
2014-02-22T13:39:58 < dongs> no, hes talking about hardware device that shows frequency of something.
2014-02-22T13:41:26 < NULL___> where can i get examples for setting clk freq etc , stm32 forums are crappy
2014-02-22T13:41:36 < dongs> stdperiphlib has samples for MCO
2014-02-22T13:42:48 < dongs> specifically in 'RCC' folder.
2014-02-22T13:44:51 < NULL___> I am sorry I have (STM32L1xx_StdPeriph_Driver) folder where all the lib files are there, where can i get RCC files , i am using STM32L152CB
2014-02-22T13:45:05 < dongs> check the "examples" dir
2014-02-22T13:45:38 < dongs> project\blabla_StdPeriph_Examples
2014-02-22T13:46:00 < dongs> but since its done by rcc, just look at stm32lwhatever_rcc.c
2014-02-22T13:46:04 < dongs> in the lib\src
2014-02-22T13:46:07 < dongs> and search for MCO.
2014-02-22T13:46:13 < dongs> its like 2 function calls to enable it
2014-02-22T13:46:21 < dongs> including enabling gpio that drives it.
2014-02-22T13:46:58 < Thorn> does stm32l even have mco?
2014-02-22T13:47:48 < dongs> shrugging
2014-02-22T13:47:51 < dongs> if it does, its in there.
2014-02-22T13:47:56 < NULL___> yes stm32l152cb's  PA8 has
2014-02-22T13:48:10 < dongs> so enable that gpio, duno if you need to d it in AF_PP or wahtever, then turn on MCO-related shit.
2014-02-22T13:48:25 < dongs> F1 stderpihlib has mco setup in RCC example
2014-02-22T13:48:32 < dongs> dunno if L1 does, but it cant be all that d ifferent
2014-02-22T13:51:53 < NULL___> ok found the example, thanks dude...
2014-02-22T13:53:42 < dongs> while you're there, peek at other examples, before you ask about how to use them :)
2014-02-22T13:56:05 < NULL___> k :)
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2014-02-22T14:17:09 < dongs> http://www.coocox.org/driver_comp/fatfs-c1153.html?mc=3&sc=21 eh
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2014-02-22T14:18:37 < Thorn> http://www.imx6rex.com/demo/  The camera is pointed to the display and monitor connected to our iMX6 Rex board.
2014-02-22T14:20:42 < dongs> haha
2014-02-22T14:20:47 < dongs> time to display goatse on it
2014-02-22T14:22:03 < Steffanx> ssh?
2014-02-22T14:22:14 < Steffanx> oh yes, its in the screenshot
2014-02-22T14:23:07 < Thorn> it's probably the only opensource 12-layer project out there
2014-02-22T14:23:57 < Thorn> how much would a propotype pcb order like that cost? http://www.imx6rex.com/wp-content/uploads/2013/11/iMX6-Rex-module-PCB-stackup-1024x616.jpg
2014-02-22T14:24:32 < Thorn> http://www.imx6rex.com/wp-content/uploads/2013/10/iMX6-Rex-Module-with-CC-1024x693.jpg
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2014-02-22T14:24:57 < dongs> not bad
2014-02-22T14:25:22 < dongs> buried vias is gonna fuck you over tho
2014-02-22T14:27:57 < zyp> ok, paid
2014-02-22T14:31:15 < dongs> ill get numbers probly monday or osmething. but she said it was picked up today 5.30
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2014-02-22T14:42:41 < zyp> great
2014-02-22T14:44:49 < Thorn> https://www.youtube.com/watch?v=rptEq2ekCpA
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2014-02-22T15:39:52 < Steffanx> This xtal is specced for 18pF load capacitors . No easy way to get 18pF capacitors for me, would it really matter if i used 15 or 22pF?
2014-02-22T15:40:08 < BrainDamage> not much
2014-02-22T15:40:10 < Steffanx> or perhaps trial and error is the best way to do it :P
2014-02-22T15:40:14 < dongs> nope not at all
2014-02-22T15:40:19 < dongs> also why cant you get 18pF?
2014-02-22T15:40:19 < BrainDamage> you'll get slightly different res freq
2014-02-22T15:40:22 < dongs> i have those loaded in my dicknplace
2014-02-22T15:40:23 < BrainDamage> but the diff is tiny
2014-02-22T15:40:43 < BrainDamage> the caps are more to pick the correct resonance over multiple ones
2014-02-22T15:41:35 < Steffanx> ok, will go with 22
2014-02-22T15:42:31 < dongs> <proircee> ainDamage> the caps are more to pick the correct resonance over multiple ones
2014-02-22T15:42:34 < dongs> err
2014-02-22T15:42:42 < dongs> <proircee> > the rule of thumb is about like this:  47pf for 1MHz to 4MHz...  33pf for 4MHz to 12MHz or so, 22pf for 12MHz to 25MHz
2014-02-22T15:44:48 < madist> Steffanx: the crystals only help with accuracy. you can leave out the crystals totally if you want.
2014-02-22T15:45:09 < Steffanx> nah it would be nice to have something around 8MHz ;)
2014-02-22T15:45:32 < madist> err... I meant to say capacitors.
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2014-02-22T15:45:56 < Steffanx> heh, i didn't even see you wrote crystals :P
2014-02-22T15:49:50 < jpa-> dongs: uhh what? doesn't it depend totally on what the crystal is specified for?
2014-02-22T15:50:25 < dongs> jpa-: of course, but if you pulled a random crystal out of your ass, chances are this will workw
2014-02-22T15:51:00 < zyp> Steffanx, no, go with 15
2014-02-22T15:51:29 < zyp> it's better to round down, trace capacitance will always add some more
2014-02-22T15:51:53 < Steffanx> heh, meh... i just went for 22pF.
2014-02-22T15:51:55 < dongs> stack some 0.5pf caps on top
2014-02-22T15:51:55 < zyp> Steffanx, also, are you sure it's specced for 18pF?
2014-02-22T15:52:03 < jpa-> dongs: yeah well, chances are pretty good it will "work" with just about anything
2014-02-22T15:52:21 < dongs> jpa, this was said by pro irc ee in like 2009
2014-02-22T15:52:24 < dongs> so its totally legit
2014-02-22T15:52:25 < dongs> etc.
2014-02-22T15:52:30 < jpa-> yeah :)
2014-02-22T15:52:54 < zyp> Steffanx, if it has a C_L value of 18pF, you should use 36pF capacitors
2014-02-22T15:53:36 < Steffanx> Really? Oh, parallel stuff.
2014-02-22T15:53:39 < Steffanx> i'll got replace them
2014-02-22T15:53:45 < Steffanx> *go
2014-02-22T15:53:48 < madist> waste of time and energy
2014-02-22T15:53:54 < jpa-> minus the input pin capacitance
2014-02-22T15:53:58 < madist> put any random capacitor or don't put any capacitor
2014-02-22T15:54:12 < jpa-> madist: and have the crystal run some 100ppm out of spec
2014-02-22T15:54:13 < discove12> any ideas how to unlock an old nokia phone ?
2014-02-22T15:54:26 < madist> jpa-: exactly. how does it make any difference at all ?
2014-02-22T15:54:37 < jpa-> madist: depends totally on circuit
2014-02-22T15:54:39 < BrainDamage> depends on your application
2014-02-22T15:54:48 < zyp> Steffanx, it'll probably work anyway, it'll just cause a frequency offset
2014-02-22T15:54:55 < BrainDamage> if you need good timing, say an high freq bus
2014-02-22T15:55:05 < Steffanx> oh jpa- that too. Any idea what that is for a L152?
2014-02-22T15:55:15 < Steffanx> ( i can always look into the ds myself of course )
2014-02-22T15:55:39 < jpa-> Steffanx: there is an application note or something about it IIRC
2014-02-22T15:55:53 < jpa-> but usually 6pF or something
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2014-02-22T15:56:47 < jpa-> madist: why even use crystal anyway if you don't need accuracy?
2014-02-22T15:57:17 < zyp> madist, I used the wrong load cap values on a RF transceiver once, it caused a 0.4 MHz carrier offset @2466MHz
2014-02-22T15:57:25 < madist> jpa-: the added accuracy from having the correct capacitance is in my experience 90% of the time not needed.
2014-02-22T15:57:28 < zyp> which was kinda a big deal since channel width were 1 MHz
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2014-02-22T15:58:43 < beaky> hello
2014-02-22T15:58:52 -!- JFK911 [~user@unaffiliated/jfk911] has joined ##stm32
2014-02-22T15:59:02 < discove12> ey beaky
2014-02-22T15:59:10 < discove12> i missed you
2014-02-22T15:59:16 < dongs> oh look beaky brought in one of his retard friends
2014-02-22T15:59:27 < dongs> discove12, I have put you on a permanent ignore, public and private. I have found you disturbing, rude and generally not worth talking to. According to the channels you hang on, it strengtens the effect of wanting to put you on ignore because of my lack of interest in you as a person. This message is not meant to be rude to you, just to inform you that i won't see anything of what you type from now on.
2014-02-22T15:59:37 < beaky> lol
2014-02-22T16:00:09 < madist> does that script get triggered every time someone mentions beaky in channel ?
2014-02-22T16:00:21 < discove12> guess so
2014-02-22T16:00:37 < dongs> < discove12> any ideas how to unlock an old nokia phone ?
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2014-02-22T16:01:15 < Steffanx> why this new nick ranewen?
2014-02-22T16:01:27 < dongs> hm?
2014-02-22T16:01:28 < discove12> better
2014-02-22T16:01:42 < dongs> '12' in discove12 nick probably means his age
2014-02-22T16:01:47 < dongs> beaky just needs to add 13 to his
2014-02-22T16:03:15 < discove12> beaky: so you wanted to say how cool new launchpad is ?
2014-02-22T16:03:21 < beaky> yes
2014-02-22T16:03:28 < discove12> tell us about it
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2014-02-22T16:04:33 < beaky> http://www.ti.com/ww/en/mcu/Tiva_Connected_Launchpad/?DCMP=tivac-launchpad&HQS=tiva-c-launchpad 14:01 < dongs> hm?
2014-02-22T16:04:36 < beaky> 14:01 < discove12> better
2014-02-22T16:04:36 < beaky> oops
2014-02-22T16:04:38 < beaky> 14:01 < dongs> '12' in discove12 nick probably means his age
2014-02-22T16:04:41 < beaky> 14:01 < dongs> beaky just needs to add 13 to his
2014-02-22T16:05:04 < beaky> i dont think its out yet
2014-02-22T16:05:45 < discove12> beaky: does it fly (like in the video) ?
2014-02-22T16:05:53 < JFK911> how much costs it?
2014-02-22T16:05:58 < dongs> costs wat
2014-02-22T16:06:00 < mmp> madist: hi, sorry for yesterday's confusing answers about microphone and ultrasound; I tend to mess data sometimes and thanks for all your comments
2014-02-22T16:06:16 < JFK911> this video tells me nothing
2014-02-22T16:06:18 < madist> :)
2014-02-22T16:06:33 < beaky> me too :( i think its just the new launchpad for the tm4c129x arm mcus
2014-02-22T16:06:40 < dongs> did beaky link to porn again
2014-02-22T16:07:10 < madist> beaky: that's an awesome video. I've never seen such a hot pornstar before.
2014-02-22T16:07:18 < madist> saving it to my harddisk now.
2014-02-22T16:07:44 < beaky> http://newscenter.ti.com/2013-10-29-TI-introduces-gateway-to-the-cloud-for-connected-products-with-Tiva-C-Series-TM4C129x-MCUs-industrys-first-ARM-Cortex-M4-with-Ethernet-MAC-PHY
2014-02-22T16:08:16 < zyp> built-in phy, that's kinda cool
2014-02-22T16:08:22 < JFK911> well cool ti has a small arm with ethernet again
2014-02-22T16:08:30 < karlp> so that means what, just a magjack and you're good to go?
2014-02-22T16:08:38 < zyp> yes
2014-02-22T16:08:39 < beaky> right
2014-02-22T16:08:41 < JFK911> maybe they will be back where they were 2 years ago before they dropped their stellaris
2014-02-22T16:08:57 < beaky> yeah why did they drop the cortex m3 ones with builtin phy+mac
2014-02-22T16:09:04 < JFK911> errata A was funny "almost nothing works in this chip"
2014-02-22T16:09:11 < karlp> JFK911: heard there was a lot of politics around the stellaris internally at ti
2014-02-22T16:09:12 < beaky> oh
2014-02-22T16:09:18 < JFK911> i think i got like a rev D4
2014-02-22T16:09:25 < JFK911> karlp: I can imagine, not invented here.
2014-02-22T16:09:27 < zyp> karlp, wonder if it still has the shitty usb core
2014-02-22T16:09:54 < dongs> lol stellaris
2014-02-22T16:09:55 < karlp> there's allegedly a ti m0+ too, which is causing even more politics, because it's sorta directly against the msp430
2014-02-22T16:09:58 < dongs> what was their pre-tiva shit called
2014-02-22T16:10:00 < dongs> that got shitcanned
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2014-02-22T16:10:45 < zyp> that would be stellaris
2014-02-22T16:10:56 < dongs> oh
2014-02-22T16:11:28 < zyp> TM4C seems to me just as a rebrand of the LM4F
2014-02-22T16:11:36 < beaky> i wonder when st will make mcus with onboard phy+mac
2014-02-22T16:11:40 < JFK911> they only changed the part numbers, zyp.
2014-02-22T16:11:49 < zyp> exactly
2014-02-22T16:12:11 < zyp> I weren't really impressed with the LM4F, so I guess the TM4C is equally shitty
2014-02-22T16:12:23 < beaky> lol
2014-02-22T16:12:23 < karlp> just like an stm32, but more expensive right?
2014-02-22T16:12:42 < zyp> I didn't look at price, but I didn't like the peripherals
2014-02-22T16:12:45 < beaky> maybe they have better ADCs or something?
2014-02-22T16:12:46 < beaky> oh
2014-02-22T16:12:58 < zyp> well, mostly the usb core, the usb core were utter shit
2014-02-22T16:12:59 < JFK911> i would think you'd find a 4f to be 'small' if you are used to the large stm32 parts zyp
2014-02-22T16:13:16 < JFK911> whats wrong with the usb?
2014-02-22T16:13:58 < Thorn> their usb core is worse than DWC_otg?
2014-02-22T16:14:25 < zyp> dwc_otg is actually rather nice, just complex
2014-02-22T16:14:51 < Thorn> if only it were well documented
2014-02-22T16:14:54 < Steffanx> oh, i see after i read the datasheet 22pF can actually be a bit too low.
2014-02-22T16:15:31 < Steffanx> *high nevermind :P
2014-02-22T16:15:44 < zyp> Steffanx, rule of thumb is «double the C_L value, round down to closest available part»
2014-02-22T16:16:10 < beaky> apart from smps, what are awesome projects for stm32f3?
2014-02-22T16:16:29 < Steffanx> yeah, but in teh datasheet they say:
2014-02-22T16:16:30 < Steffanx> "PCB and MCU pin capacitance must be included (10 pF can be used as a rough estimate of the combined pin and board capacitance) when sizing CL1 and CL2."
2014-02-22T16:16:55 < Steffanx> STM32L152 datasheet that is. And i always believe ST ( not )
2014-02-22T16:17:11 < zyp> sounds high
2014-02-22T16:17:23 < zyp> but I guess it depends how long you have the traces
2014-02-22T16:17:40 < Steffanx> anyway, i'll will see if it works. If my usb connection works im happy
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2014-02-22T16:18:46 < zyp> JFK911, register map is silly, bunch of packed small registers instead of alinging everything on 32-bit boundaries like everything else
2014-02-22T16:19:06 < zyp> I suspect the usb core were originally designed for a 8 or 16-bit architecture
2014-02-22T16:19:09 < zyp> maybe msp430
2014-02-22T16:19:14 < dongs> what a surprise :)
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2014-02-22T16:19:37 < zyp> and it lacks a bunch of stuff, like a sane way to distinguish SETUP and DATA packets, iirc
2014-02-22T16:19:47 < Thorn> does it at least allow byte-aligned transactions?
2014-02-22T16:20:09 < zyp> so you have to implement your own state machine to track what you expect to receive, and hope that's what you actually received
2014-02-22T16:20:11 < JFK911> zyp: i don't remember when exactly the "lm4f" appeared, but the "lm3s" usb part was developed or acquired by luminary before ti bought them
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2014-02-22T16:20:22 < zyp> or something like that, I don't remember all the details
2014-02-22T16:20:33 < Steffanx> My traces are pretty short ~8mm each.
2014-02-22T16:20:38 < JFK911> zyp: so that sucks, but is it still broken once the driver is finished?
2014-02-22T16:20:58 < zyp> dunno, I never bothered finishing stuff
2014-02-22T16:21:13 < JFK911> gotcha
2014-02-22T16:21:26 < JFK911> it was all a waste of time for you then
2014-02-22T16:21:38 < zyp> I think I got control transactions working somewhat
2014-02-22T16:21:56 < zyp> well, all I do is waste time, as long as I have fun I don't care :p
2014-02-22T16:22:03 < JFK911> i think a usb driver is not something i want to write, tbh ;)
2014-02-22T16:22:33 < zyp> I did, it was quite fun
2014-02-22T16:23:00 < zyp> so far it runs on the two kinds of usb cores present in the various stm32 families
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2014-02-22T16:23:10 < zyp> and other than that I've only tried porting it to lm4f so far
2014-02-22T16:23:33 < zyp> I were going to do lpc too, but haven't found time
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2014-02-22T16:24:22 < beaky_> hello
2014-02-22T16:24:41 < beaky_> .msg nickserv ghost beaky y120cr503
2014-02-22T16:24:43 < beaky_> oops
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2014-02-22T16:24:58 < JFK911> wooooops!
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2014-02-22T16:26:49 < JFK911> well I will have a look at the new tm4c when they come out
2014-02-22T16:27:00 < beaky> i cant wait to get my hercules launchpad
2014-02-22T16:27:01 < JFK911> hopefully it wont suck
2014-02-22T16:27:06 < beaky> it will be the perfect complement to stm32f3
2014-02-22T16:27:20 < JFK911> beaky is that the lockstep redundant thing
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2014-02-22T16:27:33 < beaky> yes its the one
2014-02-22T16:27:55 < beaky> cortex-R lockstep cores, redundant memory with error detection and correction, etc.
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2014-02-22T16:28:14 < beaky> so if my stm32f3 locks up, my smps wont catch fire
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2014-02-22T16:39:54 < beaky> ok I have a bunch fo stm32 projects, but only two discovery boards
2014-02-22T16:40:06 < beaky> is there a place i can get naked stm32s to be soldered to custom pcbs?
2014-02-22T16:40:13 -!- Erik_ is now known as effractur
2014-02-22T16:40:39 < Ranewen> replace naked with bare.. this aint porn chanell
2014-02-22T16:41:03 < Thorn> why are there datasheets in my pron folder
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2014-02-22T16:45:04 < beaky> its hard to find stm32 in single-quanittiy cheap
2014-02-22T16:45:17 < beaky> maybe i can order from st directly?
2014-02-22T16:45:53 < scrts> like 10k units? sure
2014-02-22T16:46:19 < beaky> damn
2014-02-22T16:46:39 -!- Steffanx [~steffanx@unaffiliated/steffanx] has joined ##stm32
2014-02-22T16:46:51 < Ranewen> samples ?
2014-02-22T16:47:01 < Ranewen> i know TI' gives some
2014-02-22T16:47:07 < scrts> beaky: try alibaba.com
2014-02-22T16:47:43 < Thorn> >its hard to find stm32 in single-quanittiy cheap
2014-02-22T16:47:45 < Thorn> wat
2014-02-22T16:49:02 < Thorn> they're the cheapest cortex-m brand afaik
2014-02-22T16:49:17 < Thorn> in silgle qty
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2014-02-22T16:49:33 < beaky> i thought nxp would be cheaper
2014-02-22T16:49:37 < beaky> or the new atmels
2014-02-22T16:49:51 < beaky> since stm32 has pretty advanced peripherals :D
2014-02-22T16:50:55 < Thorn> nxp is not cheaper, at least lpc176x vs stm32f1
2014-02-22T16:51:14 < beaky> i wish i could easily home make and home solder pcb
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2014-02-22T16:52:10 < dongs> ^ spie
2014-02-22T16:52:22 < Ranewen> :D
2014-02-22T16:52:22 < dongs> https://www.youtube.com/watch?v=dJF6J2vAxmE hardcore hardware for $300k
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--- Log closed Sat Feb 22 17:00:26 2014
--- Log opened Sat Feb 22 17:00:38 2014
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2014-02-22T17:00:38 !sendak.freenode.net [freenode-info] why register and identify? your IRC nick is how people know you. http://freenode.net/faq.shtml#nicksetup
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2014-02-22T17:02:42 < Thorn> they're the cheapest cortex-m brand afaik
2014-02-22T17:02:42 < Thorn> in silgle qty
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2014-02-22T17:02:44 < beaky> i thought nxp would be cheaper
2014-02-22T17:02:44 < beaky> or the new atmels
2014-02-22T17:02:44 < beaky> since stm32 has pretty advanced peripherals :D
2014-02-22T17:02:45 < Thorn> nxp is not cheaper, at least lpc176x vs stm32f1
2014-02-22T17:02:45 < beaky> i wish i could easily home make and home solder pcb
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2014-02-22T17:02:47 < dongs> ^ spie
2014-02-22T17:02:47 < Ranewen> :D
2014-02-22T17:02:47 < dongs> https://www.youtube.com/watch?v=dJF6J2vAxmE hardcore hardware for $300k
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2014-02-22T17:02:49 < Ranewen> that pussy is so hot..
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2014-02-22T17:06:41 < Steffann> Ok, usb works like a charm :)
2014-02-22T17:07:21 -!- gxti [~gxti@ada.partiallystapled.com] has joined ##stm32
2014-02-22T17:07:50 < beaky> yay :D
2014-02-22T17:08:37 < BrainDamage> some insight on freenode's current status:
2014-02-22T17:08:44 -!- Tectu is now known as 17SAAH6LZ
2014-02-22T17:08:47 < BrainDamage> (15:32:45) Metaleer: So, this guy in #freenode just said that he's DDoSing freenode because I banned him from some place.
2014-02-22T17:08:47 < BrainDamage> (15:32:58) KAHR-Alpha: Metaleer: you're famous
2014-02-22T17:08:47 < BrainDamage> (15:33:30) Metaleer: 15:29:53] <thisiswhathapp> Metaleer: this is what happens when you ban random people you dont know shit about from a fuck load of channels
2014-02-22T17:08:47 < BrainDamage> (15:33:44) Metaleer: [15:29:55] <thisiswhathapp> This is my war declaration on freenode
2014-02-22T17:08:48 < BrainDamage> (15:33:54) Metaleer: [15:30:23] <thisiswhathapp> Until metaleer isnt deopped in all channels he has op in, this is not going to stop
2014-02-22T17:08:50 < BrainDamage> (15:34:03) Metaleer: [15:30:45] <thisiswhathapp> erry: yeah, you can tell metaleer to go away peacefully and freenode doesnt have to suffer anymore
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2014-02-22T17:08:52 < BrainDamage> (15:34:14) KAHR-Alpha: lol
2014-02-22T17:09:14 < Steffann> lolo
2014-02-22T17:09:45 < Laurenceb__> trolololol
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2014-02-22T17:13:25 < beaky> right
2014-02-22T17:14:38 < JFK911> beaky can you use your stm32 discovery to solve the problems in the world
2014-02-22T17:17:36 -!- synico [~squish@pdpc/supporter/student/synic] has quit [Read error: Operation timed out]
2014-02-22T17:17:38 < beaky> yes
2014-02-22T17:17:38 < JFK911> can you make it prove evolution?
2014-02-22T17:17:38 < beaky> yes: monitor gene variation in culture of microbes
2014-02-22T17:17:39 < beaky> or something
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2014-02-22T17:18:50 -!- zippe [~Adium@173.11.99.161] has quit [Ping timeout: 248 seconds]
2014-02-22T17:18:52 -!- Thorn [~thorn@78-106-132-19.broadband.corbina.ru] has joined ##stm32
2014-02-22T17:18:52 -!- Thorn [~thorn@78-106-132-19.broadband.corbina.ru] has quit [Changing host]
2014-02-22T17:18:52 -!- Thorn [~thorn@unaffiliated/thorn] has joined ##stm32
2014-02-22T17:19:10 -!- jpa-_ [jpa@hilla.kapsi.fi] has quit [Ping timeout: 252 seconds]
--- Log closed Sat Feb 22 17:19:10 2014
--- Log opened Sat Feb 22 17:50:13 2014
2014-02-22T17:50:13 -!- jpa- [jpa@91.232.154.72] has joined ##stm32
2014-02-22T17:50:13 -!- Irssi: ##stm32: Total of 7 nicks [0 ops, 0 halfops, 0 voices, 7 normal]
2014-02-22T17:51:21 -!- ABL [abl@78-60-198-200.static.zebra.lt] has quit [Ping timeout: 245 seconds]
2014-02-22T17:54:10 -!- rigid [~rigid@188-195-190-187-dynip.superkabel.de] has quit [Ping timeout: 245 seconds]
2014-02-22T17:54:10 -!- tp_ [~tp@ppp59-167-172-238.static.internode.on.net] has quit [Ping timeout: 245 seconds]
2014-02-22T17:54:10 -!- bsdfox [~h36sa@107-221-61-17.lightspeed.frokca.sbcglobal.net] has joined ##stm32
2014-02-22T17:54:10 -!- Niedar [~nnscript@68.110.154.15] has joined ##stm32
2014-02-22T17:54:10 -!- bsdfox [~h36sa@107-221-61-17.lightspeed.frokca.sbcglobal.net] has quit [Excess Flood]
2014-02-22T17:54:10 -!- tp [~tp@59.167.172.238] has joined ##stm32
2014-02-22T17:55:29 -!- jpa- [jpa@91.232.154.72] has quit [Ping timeout: 245 seconds]
--- Log closed Sat Feb 22 17:55:29 2014
--- Log opened Sat Feb 22 18:25:32 2014
2014-02-22T18:25:32 -!- jpa- [jpa@hilla.kapsi.fi] has joined ##stm32
2014-02-22T18:25:32 -!- Irssi: ##stm32: Total of 62 nicks [1 ops, 0 halfops, 0 voices, 61 normal]
--- Log closed Sat Feb 22 18:31:32 2014
--- Log opened Sat Feb 22 18:37:42 2014
2014-02-22T18:37:42 -!- jpa- [jpa@hilla.kapsi.fi] has joined ##stm32
2014-02-22T18:37:42 -!- Irssi: ##stm32: Total of 8 nicks [0 ops, 0 halfops, 0 voices, 8 normal]
2014-02-22T18:38:01 -!- jaeckel [~jaeckel@sleipnir.jaeckel.eu] has quit [Ping timeout: 246 seconds]
2014-02-22T18:38:47 -!- Irssi: Join to ##stm32 was synced in 71 secs
2014-02-22T19:01:02 -!- TeknoJuce [~TeknoJuce@135.0.37.71] has quit [Quit: The g33k's are in the house OMGosh! DANGER!!1one]
2014-02-22T19:38:41 -!- LeelooMinai_ [~leeloo@184.175.46.197] has joined ##stm32
2014-02-22T19:38:41 -!- ossifrage [~ossifrage@c-71-224-59-2.hsd1.pa.comcast.net] has joined ##stm32
2014-02-22T19:38:41 -!- mattbrejza [~mattbrejz@109.74.204.206] has joined ##stm32
2014-02-22T19:38:41 -!- tp [~tp@ppp59-167-172-238.static.internode.on.net] has joined ##stm32
2014-02-22T19:38:41 -!- englishman [~englishma@vpn.hautio.net] has joined ##stm32
2014-02-22T19:38:41 -!- rigid [~rigid@188-195-190-187-dynip.superkabel.de] has joined ##stm32
2014-02-22T19:38:41 -!- barthess [~barthess@185.6.25.181] has joined ##stm32
2014-02-22T19:38:41 -!- gnomad [~gnomad@c-71-203-29-67.hsd1.fl.comcast.net] has joined ##stm32
2014-02-22T19:38:41 -!- zippe [~Adium@173.11.99.161] has joined ##stm32
2014-02-22T19:38:41 -!- Lt_Lemming_ [Lt_Lemming@203.219.229.140] has joined ##stm32
2014-02-22T19:38:41 -!- CheBuzz [~CheBuzz@76.164.192.124] has joined ##stm32
2014-02-22T19:38:41 -!- alan5_ [~quassel@cpc4-belf10-2-0-cust924.2-1.cable.virginm.net] has joined ##stm32
2014-02-22T19:38:41 -!- Trollence [~laurence@vlsi1.eee.nottingham.ac.uk] has joined ##stm32
2014-02-22T19:38:41 -!- ABLomas [abl@78-60-198-200.static.zebra.lt] has joined ##stm32
2014-02-22T19:38:41 -!- Simon-- [~sim@2606:6a00:0:28:5604:a6ff:fe02:702b] has joined ##stm32
2014-02-22T19:38:41 -!- shiftplusone [~Shift@unaffiliated/shiftplusone] has joined ##stm32
2014-02-22T19:38:41 -!- MrMobius [~Joey@194.176.111.135] has joined ##stm32
2014-02-22T19:38:41 -!- Steffann [~steffanx@unaffiliated/steffanx] has joined ##stm32
2014-02-22T19:38:41 -!- GargantuaSauce_ [~sauce@blk-222-248-226.eastlink.ca] has joined ##stm32
2014-02-22T19:38:41 -!- Laurenceb__ [~Laurence@host81-159-191-104.range81-159.btcentralplus.com] has joined ##stm32
2014-02-22T19:38:41 -!- scrts [~quassel@unaffiliated/scrts] has joined ##stm32
2014-02-22T19:38:41 -!- effractur [~Erik@ip5454c44d.adsl-surfen.hetnet.nl] has joined ##stm32
2014-02-22T19:38:41 -!- enots___ [~dimka@sole.flsd.net] has joined ##stm32
2014-02-22T19:38:41 -!- sterna1 [~Adium@dhcp166.chs.chalmers.se] has joined ##stm32
2014-02-22T19:38:41 -!- phantoxeD [destroy@a89-154-119-158.cpe.netcabo.pt] has joined ##stm32
2014-02-22T19:38:41 -!- JFK911 [~user@unaffiliated/jfk911] has joined ##stm32
2014-02-22T19:38:41 -!- a_morale [~quassel@2-227-115-13.ip186.fastwebnet.it] has joined ##stm32
2014-02-22T19:38:41 -!- blight [~greg@reactos/developer/blight] has joined ##stm32
2014-02-22T19:38:41 -!- [7] [~quassel@rockbox/developer/TheSeven] has joined ##stm32
2014-02-22T19:38:41 -!- karlp [~karl@palmtree.beeroclock.net] has joined ##stm32
2014-02-22T19:38:41 -!- wm_ [~willi@a88-112-17-201.elisa-laajakaista.fi] has joined ##stm32
2014-02-22T19:38:41 -!- R0b0t1 [~dev@unaffiliated/r0b0t1] has joined ##stm32
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2014-02-22T19:38:41 -!- mervaka_ [~mervaka@mervaka.co.uk] has joined ##stm32
2014-02-22T19:38:41 -!- BrainDamage [~BrainDama@dynamic-adsl-94-36-236-193.clienti.tiscali.it] has joined ##stm32
2014-02-22T19:38:41 -!- txf [~txf@146.185.153.97] has joined ##stm32
2014-02-22T19:38:41 -!- Lux [~Luggi09@cnh809212119.pppoe.surfer.cnh.at] has joined ##stm32
2014-02-22T19:38:41 -!- esden [esden@repl.esden.net] has joined ##stm32
2014-02-22T19:38:41 -!- fergusnoble [fergusnobl@repl.esden.net] has joined ##stm32
2014-02-22T19:38:41 -!- aadamson [aadamson@c-50-147-220-110.hsd1.ga.comcast.net] has joined ##stm32
2014-02-22T19:38:41 -!- qyx_ [~qyx@krtko.org] has joined ##stm32
2014-02-22T19:38:41 -!- fbs [fbs@fsf/member/fbs] has joined ##stm32
2014-02-22T19:38:41 -!- ChanServ [ChanServ@services.] has joined ##stm32
2014-02-22T19:38:41 -!- Posterdati [~kvirc@host208-231-dynamic.2-79-r.retail.telecomitalia.it] has joined ##stm32
2014-02-22T19:38:41 -!- Devilholk [~devilholk@luder.nu] has joined ##stm32
2014-02-22T19:38:41 -!- debris` [debris@shells.ohai.su] has joined ##stm32
2014-02-22T19:38:41 -!- ServerMode/##stm32 [+o ChanServ] by adams.freenode.net
2014-02-22T19:38:41 -!- RaYmAn [rayman@rayman.dk] has joined ##stm32
2014-02-22T19:38:41 -!- Sync_ [~foobar@sync-hv.de] has joined ##stm32
2014-02-22T19:38:41 -!- grummund_ [~user@unaffiliated/grummund] has joined ##stm32
2014-02-22T19:38:41 -!- akaWolf1 [~akaWolf@188.134.9.161] has joined ##stm32
2014-02-22T19:38:41 -!- daku [daku@dakus.dk] has joined ##stm32
2014-02-22T19:38:45 -!- tp [~tp@ppp59-167-172-238.static.internode.on.net] has quit [Ping timeout: 272 seconds]
2014-02-22T19:38:47 -!- Vutral [~ss@vutral.net] has quit [Changing host]
2014-02-22T19:38:47 -!- Vutral [~ss@mirbsd/special/Vutral] has joined ##stm32
2014-02-22T19:39:27 -!- mumptai [~calle@brmn-4d0acd7e.pool.mediaWays.net] has joined ##stm32
2014-02-22T19:39:29 -!- LeelooMinai_ [~leeloo@184.175.46.197] has quit [Ping timeout: 272 seconds]
2014-02-22T19:39:34 -!- zippe [~Adium@173.11.99.161] has quit [Ping timeout: 252 seconds]
2014-02-22T19:40:29 -!- tp [~tp@ppp59-167-172-238.static.internode.on.net] has joined ##stm32
2014-02-22T19:40:30 -!- claude [sbnc@h1682708.stratoserver.net] has joined ##stm32
2014-02-22T19:40:49 -!- LeelooMinai [~leeloo@184.175.46.197] has joined ##stm32
2014-02-22T19:41:07 -!- rigid [~rigid@188-195-190-187-dynip.superkabel.de] has quit [Changing host]
2014-02-22T19:41:07 -!- rigid [~rigid@unaffiliated/rigid] has joined ##stm32
2014-02-22T19:41:25 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has joined ##stm32
2014-02-22T19:41:42 -!- Thorn [~thorn@78-106-132-19.broadband.corbina.ru] has joined ##stm32
2014-02-22T19:41:42 -!- Thorn [~thorn@78-106-132-19.broadband.corbina.ru] has quit [Changing host]
2014-02-22T19:41:42 -!- Thorn [~thorn@unaffiliated/thorn] has joined ##stm32
2014-02-22T19:41:55 -!- jaeckel [~jaeckel@unaffiliated/jaeckel] has joined ##stm32
2014-02-22T19:42:24 -!- Tectu_ [~Tectu@221-112.195-178.cust.bluewin.ch] has joined ##stm32
2014-02-22T19:42:46 -!- gxti [~gxti@ada.partiallystapled.com] has joined ##stm32
2014-02-22T19:49:27 -!- Tectu_ is now known as 23LAA6U0D
2014-02-22T19:49:27 -!- Tectu_ [~Tectu@221-112.195-178.cust.bluewin.ch] has joined ##stm32
2014-02-22T19:49:28 -!- dfletcher [~fletch@108-196-222-251.lightspeed.sntcca.sbcglobal.net] has joined ##stm32
2014-02-22T19:49:28 -!- ds2 [noinf@rehut.com] has joined ##stm32
2014-02-22T19:52:29 -!- jaeckel [~jaeckel@unaffiliated/jaeckel] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:30 -!- englishman [~englishma@vpn.hautio.net] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:31 -!- 23LAA6U0D [~Tectu@221-112.195-178.cust.bluewin.ch] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:32 -!- rigid [~rigid@unaffiliated/rigid] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:36 -!- mattbrejza [~mattbrejz@109.74.204.206] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:37 -!- zippe [~Adium@173.11.99.161] has joined ##stm32
2014-02-22T19:52:38 -!- gxti [~gxti@ada.partiallystapled.com] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:38 -!- bsdfox [~h36sa@freebsd/contributor/bobryan] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:39 -!- tp [~tp@ppp59-167-172-238.static.internode.on.net] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:40 -!- Thorn [~thorn@unaffiliated/thorn] has quit [Ping timeout: 272 seconds]
2014-02-22T19:52:40 -!- dongs [~no@bcas.tv] has joined ##stm32
2014-02-22T19:52:41 -!- englishman [~englishma@85.25.122.4] has joined ##stm32
2014-02-22T19:55:59 -!- Netsplit *.net <-> *.split quits: gnomad, zippe, englishman, barthess, ossifrage, mumptai, LeelooMinai, dongs, claude
2014-02-22T19:59:38 -!- Netsplit over, joins: LeelooMinai
2014-02-22T20:00:33 -!- Netsplit over, joins: englishman, dongs, zippe, claude, ossifrage, gnomad, barthess
2014-02-22T20:03:41 -!- barthess [~barthess@185.6.25.181] has quit [Ping timeout: 272 seconds]
2014-02-22T20:03:42 -!- ossifrage [~ossifrage@c-71-224-59-2.hsd1.pa.comcast.net] has quit [Ping timeout: 272 seconds]
2014-02-22T20:04:25 -!- LeelooMinai_ [~leeloo@184.175.46.197] has joined ##stm32
2014-02-22T20:05:58 -!- jaeckel [~jaeckel@sleipnir.jaeckel.eu] has joined ##stm32
2014-02-22T20:06:06 -!- englishman [~englishma@85.25.122.4] has quit [Ping timeout: 272 seconds]
2014-02-22T20:06:30 -!- Netsplit *.net <-> *.split quits: LeelooMinai, Tectu_
2014-02-22T20:06:34 -!- Netsplit *.net <-> *.split quits: Trollence, Lt_Lemming_, ABLomas, alan5_, CheBuzz
2014-02-22T20:07:16 -!- jaeckel [~jaeckel@sleipnir.jaeckel.eu] has quit [Changing host]
2014-02-22T20:07:16 -!- jaeckel [~jaeckel@unaffiliated/jaeckel] has joined ##stm32
2014-02-22T20:09:30 -!- tp [~tp@ppp59-167-172-238.static.internode.on.net] has joined ##stm32
2014-02-22T20:09:44 -!- rmob [~rmob@188-195-190-187-dynip.superkabel.de] has joined ##stm32
2014-02-22T20:09:48 -!- barthess [~barthess@185.6.25.181] has joined ##stm32
2014-02-22T20:12:41 -!- gxti [~gxti@ada.partiallystapled.com] has joined ##stm32
2014-02-22T20:13:12 < dongs> http://i.imgur.com/s34boMz.jpg finally piece of shit
2014-02-22T20:13:17 -!- englishman [~englishma@vpn.hautio.net] has joined ##stm32
2014-02-22T20:13:19 -!- TeknoJuce [~TeknoJuce@135.0.37.71] has joined ##stm32
2014-02-22T20:13:20 -!- TeknoJuce [~TeknoJuce@135.0.37.71] has quit [Changing host]
2014-02-22T20:13:20 -!- TeknoJuce [~TeknoJuce@xbmc/staff/TeknoJuce] has joined ##stm32
2014-02-22T20:13:50 -!- TeknoJuce [~TeknoJuce@xbmc/staff/TeknoJuce] has quit [Client Quit]
--- Log closed Sat Feb 22 20:19:53 2014
--- Log opened Sat Feb 22 21:37:12 2014
2014-02-22T21:37:12 -!- jpa- [jpa@hilla.kapsi.fi] has joined ##stm32
2014-02-22T21:37:12 -!- Irssi: ##stm32: Total of 55 nicks [1 ops, 0 halfops, 0 voices, 54 normal]
2014-02-22T21:38:20 -!- Irssi: Join to ##stm32 was synced in 74 secs
2014-02-22T21:39:36 -!- FreezingCold [~FreezingC@135.0.41.14] has joined ##stm32
2014-02-22T21:45:07 -!- prattmic [~prattmic@pratt.im] has joined ##stm32
2014-02-22T21:46:45 -!- dfletcher [~fletch@108-196-222-251.lightspeed.sntcca.sbcglobal.net] has quit [Read error: Connection reset by peer]
2014-02-22T21:50:03 -!- FreezingAlt [~FreezingC@135.0.41.14] has joined ##stm32
2014-02-22T21:52:29 -!- Vutral [~ss@mirbsd/special/Vutral] has joined ##stm32
2014-02-22T21:52:29 -!- nighty^__ [~nighty@static-68-179-124-161.ptr.terago.net] has joined ##stm32
2014-02-22T21:52:29 -!- Tectu [tectu@2a01:4f8:100:4323:4f8:4f8:0:6e] has joined ##stm32
2014-02-22T21:52:29 -!- PaulFertser [paul@paulfertser.info] has joined ##stm32
2014-02-22T21:52:29 -!- Alexer [~alexer@alexer.net] has joined ##stm32
2014-02-22T21:53:04 -!- FreezingCold [~FreezingC@135.0.41.14] has quit [Ping timeout: 264 seconds]
2014-02-22T21:53:55 -!- ABLomas [abl@78-60-198-200.static.zebra.lt] has joined ##stm32
2014-02-22T21:53:55 -!- Trollence [~laurence@vlsi1.eee.nottingham.ac.uk] has joined ##stm32
2014-02-22T21:53:55 -!- alan5_ [~quassel@cpc4-belf10-2-0-cust924.2-1.cable.virginm.net] has joined ##stm32
2014-02-22T21:53:55 -!- CheBuzz [~CheBuzz@76.164.192.124] has joined ##stm32
2014-02-22T21:53:55 -!- Lt_Lemming_ [Lt_Lemming@203.219.229.140] has joined ##stm32
2014-02-22T21:58:30 -!- upgrdman [~upgrdman@75-128-35-99.static.mtpk.ca.charter.com] has joined ##stm32
2014-02-22T21:58:30 -!- upgrdman [~upgrdman@75-128-35-99.static.mtpk.ca.charter.com] has quit [Changing host]
2014-02-22T21:58:30 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has joined ##stm32
2014-02-22T22:00:15 -!- gxti [~gxti@ada.partiallystapled.com] has joined ##stm32
2014-02-22T22:02:26 -!- FreezingAlt is now known as FreezingCold
2014-02-22T22:11:14 -!- synic [~squish@pdpc/supporter/student/synic] has joined ##stm32
2014-02-22T22:12:35 -!- phantoneD [~destroy@a89-154-119-158.cpe.netcabo.pt] has joined ##stm32
2014-02-22T22:15:05 -!- phantoxeD [destroy@a89-154-119-158.cpe.netcabo.pt] has quit [Ping timeout: 252 seconds]
2014-02-22T22:23:47 -!- rigid [~rigid@188-195-190-187-dynip.superkabel.de] has joined ##stm32
2014-02-22T22:23:47 -!- rigid [~rigid@188-195-190-187-dynip.superkabel.de] has quit [Changing host]
2014-02-22T22:23:47 -!- rigid [~rigid@unaffiliated/rigid] has joined ##stm32
2014-02-22T22:28:19 -!- CRF_Peter [~Peter@host-78-65-187-104.homerun.telia.com] has joined ##stm32
2014-02-22T22:35:04 -!- Netsplit *.net <-> *.split quits: Tectu, PaulFertser, rigid, nighty^__, Vutral
2014-02-22T22:35:05 -!- Netsplit *.net <-> *.split quits: Alexer
2014-02-22T22:39:23 -!- MrM0bius [~Joey@194.176.111.135] has joined ##stm32
2014-02-22T22:44:21 -!- MrMobius [~Joey@194.176.111.135] has quit [Ping timeout: 260 seconds]
2014-02-22T22:44:21 -!- Netsplit *.net <-> *.split quits: Lt_Lemming_, Trollence, ABLomas, alan5_, CheBuzz
2014-02-22T22:48:11 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has quit [Quit: This computer has gone to sleep]
2014-02-22T22:54:34 -!- mumptai [~calle@brmn-4d0acd7e.pool.mediaWays.net] has joined ##stm32
2014-02-22T22:54:34 -!- zyp [zyp@zyp.im] has joined ##stm32
2014-02-22T22:54:34 -!- Netsplit over, joins: alan5_, CheBuzz, ABLomas, Trollence, Lt_Lemming_
2014-02-22T22:54:47 -!- madist [madist@unaffiliated/madist] has joined ##stm32
2014-02-22T22:59:43 -!- madist [madist@unaffiliated/madist] has quit [Ping timeout: 252 seconds]
2014-02-22T23:00:38 -!- zyp [zyp@zyp.im] has quit [Ping timeout: 252 seconds]
2014-02-22T23:01:18 -!- Ranewen [~Ran_the_g@unaffiliated/ranewen] has joined ##stm32
2014-02-22T23:01:59 -!- Rickta59 [~Rickta59@cpe-174-106-144-066.ec.res.rr.com] has joined ##stm32
2014-02-22T23:03:31 -!- Rickta59 [~Rickta59@cpe-174-106-144-066.ec.res.rr.com] has quit [Client Quit]
2014-02-22T23:05:41 -!- Rickta59 [~Rickta59@cpe-174-106-144-066.ec.res.rr.com] has joined ##stm32
2014-02-22T23:07:30 -!- zyp [zyp@zyp.im] has joined ##stm32
2014-02-22T23:11:16 -!- upgrdman [~upgrdman@blender/artist/upgrdman] has joined ##stm32
2014-02-22T23:13:26 -!- Thorn__ is now known as Thorn
2014-02-22T23:14:28 -!- Thorn [~thorn@unaffiliated/thorn] has quit [Read error: Connection reset by peer]
2014-02-22T23:17:04 -!- Netsplit *.net <-> *.split quits: Lt_Lemming_, Trollence, ABLomas, alan5_, CheBuzz
2014-02-22T23:31:21 -!- Viper168 [~Viper@unaffiliated/viper168] has joined ##stm32
2014-02-22T23:38:25 < gxti> quality irc
2014-02-22T23:40:55 < Ranewen> dos again ?
2014-02-22T23:41:01 < gxti> probably
2014-02-22T23:46:26 < Laurenceb__> http://bcas.tv/paste/results/U2XecC31.html
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--- Day changed Sun Feb 23 2014
2014-02-23T00:01:55 < karlp> rocking out the arduino code ;) http://paste.fedoraproject.org/79546/31063981/
2014-02-23T00:03:36 < zyp> hardcore
2014-02-23T00:04:47 < karlp> it's so _fast_ compared to doing it all by hand on stm32
2014-02-23T00:04:58 < karlp> or at least, I don't have all the lcd pieces in place for doing it myself
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2014-02-23T00:06:35 < zyp> you've never written a hd44780 lib? :p
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2014-02-23T00:10:09 < karlp> never needed one :)
2014-02-23T00:10:16 < karlp> have I failed the human race?
2014-02-23T00:10:31 < karlp> I was lucky I had a hd44780 lcd lying around!
2014-02-23T00:11:12 < zyp> my first AVR project involved a hd44780
2014-02-23T00:12:05 < gxti> most of the time it took me to get one working was because i was stubbornly trying to check the "busy" flag which is clearly a lie
2014-02-23T00:12:34 < gxti> once i gave up on that and just added lots of fixed delays it worked, if i'd stuck to that from the start it would have been finished in 30 minutes.
2014-02-23T00:12:58 < karlp> I actually plugged it into my stm32l disco, then realized that somewhere I had an old avr board lying around, and it would probably be faster getting that going
2014-02-23T00:13:04 < karlp> (shouldn't have left it to the las tminute)
2014-02-23T00:13:16 < gnomad> a lot of hd44780s are really finicky about startup delays
2014-02-23T00:13:33 < gnomad> and a lot of pre-written libs use delays *way* shorter than the spec
2014-02-23T00:13:41 < Thorn> IIRC I was able to bitbang 1-wire in avr assembly without scope or LA but hd44789 did make me think about buying lab instruments
2014-02-23T00:15:22 < gxti> also 4 bit mode seemed to work in practice but i don't understand why it works, there's no synchronization or anything. if the clock glitched once the display would be fubar until reset...
2014-02-23T00:15:58 < MrM0bius> gxti, no synchronisation?
2014-02-23T00:16:06 < gxti> nothing to indicate even/odd fields
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2014-02-23T00:17:24 < gxti> anyway i just put that shit on a shift register, and since it's 74AHCT it also does voltage shifting since putting 3.3v into a 5v lcd is technically out of spec
2014-02-23T00:18:12 < gxti> add EN and RS lines with pullups to 5v, tie RW to write mode, and done
2014-02-23T00:19:02 < karlp> now I just have to deal with poem lines being longer than 16 chars.
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2014-02-23T00:55:08 < Thorn> wtf, i.mx6 (4x 1GHz cores and a shitload of peripherals) costs as much as a small 25k LE FPGA
2014-02-23T00:55:31 < Ranewen> fpga better
2014-02-23T00:59:31 < gxti> categorically? i think not
2014-02-23T00:59:42 < gxti> if you want to replace your PC with a 25K LE FPGA, be my guest :p
2014-02-23T01:00:24 < Thorn> but it can run leenux in a nios2!
2014-02-23T01:00:32 < qyx_> i dont even c
2014-02-23T01:00:33 < qyx_> http://pastebin.com/wWzfqMYD
2014-02-23T01:00:34 < zyp> gxti, so you want to replace your PC with an i.mx6?
2014-02-23T01:00:37 < Ranewen> gxti: i use my pc for mining.. :D
2014-02-23T01:00:57 < gxti> zyp: could do worse
2014-02-23T01:01:07 < gxti> could be a fpga...
2014-02-23T01:01:44 < Ranewen> i have a cool fpga board i want to show you
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2014-02-23T01:41:24 < qyx_> another one
2014-02-23T01:41:26 < qyx_> while (userdb && userdb->username) {
2014-02-23T01:41:26 < qyx_> }
2014-02-23T01:41:40 < qyx_> i assume it is too late for me to be able to generate useful code
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2014-02-23T03:03:15 < pidpawel> hi. I'm trying to flash STM32F103CB on gentoo linux with no success. I've tried DFU, stlink v2 from stm32f4discovery and usb-blaster jtag. I've tried openocd and stlink from texane from git. I've tried two devboards (clone of maple mini). no success. can anyone write me a step by step, tasklink what to do to flash this µC using stlink v2 from stm32f4discovery and stlink?
2014-02-23T03:04:11 < pidpawel> right now I'm stuck at ⌡ <%pidpawel> sudo ~/git/stlink/st-flash write main.bin 0x8000000
2014-02-23T03:04:11 < pidpawel> 2014-02-23T01:58:53 INFO src/stlink-common.c: Loading device parameters....
2014-02-23T03:04:11 < pidpawel> 2014-02-23T01:58:53 WARN src/stlink-common.c: unknown chip id! 0xe0042000
2014-02-23T03:04:11 < pidpawel> but this means nothing because I get exactly the same error when no devboard is connected to the stlink
2014-02-23T03:04:16 < Ranewen> http://crolion.wordpress.com/2013/08/25/stm32f4-discovery-board-installation-quick-start-guide/
2014-02-23T03:04:27 < pidpawel> yes, I've found this reset trick but no success.
2014-02-23T03:05:30 < pidpawel> ⌡ <%pidpawel> ~/git/stlink/st-util
2014-02-23T03:05:30 < pidpawel> 2014-02-23T02:05:13 INFO src/stlink-common.c: Loading device parameters....
2014-02-23T03:05:30 < pidpawel> 2014-02-23T02:05:13 WARN src/stlink-common.c: unknown chip id! 0xe0042000
2014-02-23T03:05:30 < pidpawel> Chip ID is 00000000, Core ID is  00000000.
2014-02-23T03:05:37 < pidpawel> Ranewen: ^
2014-02-23T03:07:13 < Ranewen> pidpawel: it was almost a year ago (archlinux), it should be compatible... plus i mentioned the original link (where i got the informations)... so i advise you check both, the most simple would be to install windows in a vbox, and install free coocox ide
2014-02-23T03:07:50 < pidpawel> vcc, jtck, gnd, jtms, nrst, jtdo os this the correct order of connections in stlink on stm32f4discovery?
2014-02-23T03:08:26 < Ranewen> i aint reading datasheets now.. im 2 tired gnight pidpawel
2014-02-23T03:08:29 < qyx_> pidpawel: download openocd 0.7.0 sources and compile
2014-02-23T03:08:34 < qyx_> pidpawel: ot works out of box
2014-02-23T03:08:38 < Thorn> pidpawel: is your chip currently blank?
2014-02-23T03:09:17 < pidpawel> the thing is that I flashed this exact chip with the tools using this exact system some time ago
2014-02-23T03:09:26 < pidpawel> I just cant do it now… dunno why.
2014-02-23T03:09:46 < Thorn> so it's not blank?
2014-02-23T03:09:47 < pidpawel> qyx_: I have openocd 0.7.0 installed right now
2014-02-23T03:09:51 < pidpawel> Thorn: no
2014-02-23T03:10:06 < qyx_> pidpawel: and whats the output of oocd?
2014-02-23T03:10:12 < pidpawel> Error: read version failed
2014-02-23T03:10:12 < pidpawel> in procedure 'transport'
2014-02-23T03:10:12 < pidpawel> in procedure 'init'
2014-02-23T03:10:14 < Thorn> have you remapped swd pins by any chance?
2014-02-23T03:10:29 < pidpawel> i dont think so.
2014-02-23T03:11:00 < pidpawel> i have two pieces - one with my old code and one with maple mini's bootloader
2014-02-23T03:12:41 < pidpawel> https://gist.github.com/pidpawel/62ac2c36cc6ad3a574ba full openocd output after reconnecting stlink's usb
2014-02-23T03:13:36 < pidpawel> http://wklej.org/hash/ac5cffbf463/txt/ the same when connected with usb-blaster
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2014-02-23T03:21:28 < tp> <pidpawel> I wrote this about a year ago, you may find some tips there: http://lisglug.org/viewtopic.php?f=34&t=40
2014-02-23T03:22:25 < pidpawel> Info : STLINK v2 JTAG v14 API v2 SWIM v0 VID 0x0483 PID 0x3748
2014-02-23T03:22:27 < pidpawel> JUPI! :D
2014-02-23T03:23:03 < pidpawel> same as always. misplaced wiring. i thought that stlink provides VCC
2014-02-23T03:23:19 < pidpawel> but it doesnt. :<
2014-02-23T03:23:45 < tp> only 3 wire debug :)
2014-02-23T03:24:00 < tp> clock data and ground I think
2014-02-23T03:24:23 < pidpawel> hmm. it doesnt work for me without vcc at all
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2014-02-23T03:25:14 < tp> the target will need a seperate vcc for sure
2014-02-23T03:27:01 < tp> pidpawel:  are you using a STM Discovery board with jtag to a PC to feed a STM Discovery with SWD ?
2014-02-23T03:28:50 < tp> or a  STM Discovery board with USB to a PC, to feed a STM Discovery with SWD ?
2014-02-23T03:29:13 < pidpawel> I have only one discovery
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2014-02-23T03:29:37 < pidpawel> nvm. the led is blinking :)
2014-02-23T03:30:11 < pidpawel> I have finally got cmsis working with gcc on linux :)
2014-02-23T03:30:23 < pidpawel> arm-none-eabi-gcc to be exact.
2014-02-23T03:30:37 < tp> thats driven from a Linux box by USB ?
2014-02-23T03:30:45 < tp> yeah, Sam as I use
2014-02-23T03:30:56 < tp> same
2014-02-23T03:30:58 < pidpawel> thanks everyone for help btw ;)
2014-02-23T03:32:49 < tp> CMSIS RTOS ?>
2014-02-23T03:33:47 < pidpawel> nope.
2014-02-23T03:35:05 < pidpawel> right now just https://gist.github.com/pidpawel/b801e1d6ac0bcc4f3b9e (a modified version of http://vsdev.me/notes/cortex_cmsis/ which was actually helpfull despite being for lpc :P)
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2014-02-23T03:36:46 < pidpawel> right now that is all I had to write to get it working https://gist.github.com/pidpawel/9165345
2014-02-23T03:38:33 < tp> CMSIS is ARM?s solution to abstracting the time-consuming and reference-manual-digging initialization of and low-level interface to the Cortex M0/0+/3 core.
2014-02-23T03:38:55 < tp> "time-consuming and reference-manual-digging", hahah that's a understatement
2014-02-23T03:39:01 < pidpawel> oo. I saw gdbtui in your tutorial… I'll definetely come back to ask about this awesome piece of software :)
2014-02-23T03:39:02 < tp> nice\
2014-02-23T03:39:14 < tp> it's nice and simple
2014-02-23T03:39:47 < pidpawel> it's nice and simple when you use it more often than once a year
2014-02-23T03:39:48 < pidpawel> :D
2014-02-23T03:39:54 < tp> I'm a bit rusty now, I haven't been back to it for nearly a year
2014-02-23T03:40:23 < tp> pidpawel:  thanks for the heads up re CMSIS
2014-02-23T03:40:58 < tp> haha, yeah
2014-02-23T03:41:49 < tp> it was awesome to single step thru the code in gdb, change registers and alter the program flow *on the chip* via SWD
2014-02-23T03:42:07 < tp> for me a massive step up from simulators
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2014-02-23T03:45:14 < pidpawel> I dont use gdb much at all… usually it's faster for me to write a simple printf or sth rather than try to recall correct shortcuts in gdb :P
2014-02-23T03:45:42 < pidpawel> ok. probably it's the right time to go to sleep
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2014-02-23T03:45:50 < tp> no problemo
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2014-02-23T03:46:11 < tp> night
2014-02-23T03:46:21 < pidpawel> thanks again (I think that I'll idle on this channel for a while :)) and good night
2014-02-23T03:47:09 < tp> (its only 12:46am here)
2014-02-23T03:47:39 < pidpawel>  02:47:25 CET
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2014-02-23T04:29:29 < dongs> sup blogs
2014-02-23T04:37:19 < qyx_> writing web in C
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2014-02-23T08:09:53 < dongs> dam this china prepating pad/ir lamp shit is amazing. why the fuck did i ever bother with hot air to rework stuff
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2014-02-23T08:19:10 < tp> dongs:  tweezers get hot in the IR beam when reworking, burn fingers etc ?
2014-02-23T08:19:25 < dongs> tp: havent had much issues
2014-02-23T08:19:32 < dongs> just removed/replaced a qfn using my usual tweezers
2014-02-23T08:19:40 < tp> not that that doesnt happen with hot air ...
2014-02-23T08:19:50 < tp> Ive always hated hot air
2014-02-23T08:20:18 < tp> and wondered about the cheapish chinese IR rework stations
2014-02-23T08:20:50 < dongs> how tiny are your tweezers for them to get hot enough to burn you?
2014-02-23T08:21:04 < tp> yours have a preheat plate under and the IR lamp above ?
2014-02-23T08:21:11 < dongs> yes
2014-02-23T08:21:17 < dongs> T865+ or something lemme get the number
2014-02-23T08:21:29 < dongs> T=862++
2014-02-23T08:21:29 < dongs> that
2014-02-23T08:21:40 < tp> id burn my fingers with the hot air while I was looking in the microscope trying to place the part etc
2014-02-23T08:21:56 < tp> it's just me ...
2014-02-23T08:22:16 < tp> I'm old and need a microscope for smt work thesedays
2014-02-23T08:22:37 < dongs> http://www.engineer.jp/products/tweezers/pn01/item_02/pt-12 my tweezers
2014-02-23T08:22:41 < tp> cool, Ill save that part number for when I buy one, thanks for the heads up
2014-02-23T08:22:52 < dongs> i usually dont touch the last 2-3cm of it under any condition
2014-02-23T08:23:00 < dongs> so if it gets hot there, i dont notice
2014-02-23T08:23:46 < tp> they look useful. Mine are a pair of Swiss watchmakers units I bought 30 years ago
2014-02-23T08:24:09 < tp> absolute precision, I find it hard to use anything else now
2014-02-23T08:24:28 < dongs> yeah. these are OK for 0603, for 0402 i use smaller set
2014-02-23T08:24:40 < tp> but they're straight not bent like yours
2014-02-23T08:24:40 < dongs> seems also made in swiss
2014-02-23T08:24:41 < dongs> heh
2014-02-23T08:24:53 < tp> they definitely make great tweezers there
2014-02-23T08:25:01 < dongs> http://www.ikaswebshop.com/hopnotwantip.html
2014-02-23T08:25:01 < tp> also non magnetic
2014-02-23T08:25:04 < dongs> right
2014-02-23T08:25:19 < dongs> mine isp852. i prefer angled stuff so i dont have to hover over the top of the board
2014-02-23T08:25:27 < dongs> i got some straight oens, didnt like it
2014-02-23T08:25:51 < tp> angled makes good sense, I agree
2014-02-23T08:26:23 < tp> mine are like the P-850's tho 30 years ago, mine were 10AUD
2014-02-23T08:26:52 < tp> I guess prices have gone up about 6x since then, but you do have them for a lifetime if careful
2014-02-23T08:27:14 < dongs> yea i had these for quite a while.
2014-02-23T08:28:01 < tp> I was looking for good tweezers a while back, couldnt find any, and those in your link look like the ones I want
2014-02-23T08:29:21 < dongs> pretty sure they shouldnt be that much either. ithink i paid about ha lf
2014-02-23T08:29:28 < dongs> which is reasonable for the quality
2014-02-23T08:30:08 < tp> wow, thos guys have some awesome stuff!
2014-02-23T08:30:23 < tp> you know how hard it is to find centre pivot tools ?
2014-02-23T08:30:26 < tp> http://www.ikaswebshop.com/hopprlonopl.html
2014-02-23T08:30:44 < tp> Bacho used to make some a long time back
2014-02-23T08:31:29 < tp> I was going to mill a pair, but I only have a small hobby mill and it would take too long
2014-02-23T08:31:55 < tp> if I had a NC of any quality id have ripped out a few pairs and case hardened them
2014-02-23T08:32:25 < tp> cant make everything properly yourself, not enough time in ones life!
2014-02-23T08:32:34 < dongs> arent those just plain old pliers? what makes them special?
2014-02-23T08:32:42 < tp> nooo
2014-02-23T08:33:02 < tp> see the pivot ? one arm passes thru the other
2014-02-23T08:33:19 < dongs> isnt it usually that? like top half and bottom half
2014-02-23T08:33:24 < tp> normally, both arms just sit side by side, like a pair of sizors
2014-02-23T08:33:31 < dongs> or is the 3-way thing that makes it special
2014-02-23T08:34:00 < tp> one arm has a slot, and the other passes thru it, then the pin is fitted
2014-02-23T08:34:33 < tp> that way the jaws mate flat under pressure with no force twisting on the pivot
2014-02-23T08:34:43 < dongs> yeah, i see, makes sense now
2014-02-23T08:35:09 < tp> instrument makers always used centre pivot tools
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2014-02-23T08:35:46 < tp> and I've longed for some new ones for years, but theyre very hard to find, I'm sure the chinese have never seen them ;-)
2014-02-23T08:36:02 < tp> I can see myself spending heaps at your link
2014-02-23T08:36:31 < dongs> that was just first english site on google. i think most of their prices are ripoff. like that thing at amazon.jp is around 40bucks
2014-02-23T08:36:31 < upgrdman> nice web design   http://www.danssmallpartsandkits.net/
2014-02-23T08:36:41 < tp> it's in the USA, which really is the place for quality tools ... still
2014-02-23T08:36:57 < dongs> tp: all those tools are from jp (hozan, engineer)
2014-02-23T08:37:07 < tp> yeah, but I don't read japanese
2014-02-23T08:37:08 < dongs> upgrdman: needs mailbox gif with mail flying inside
2014-02-23T08:37:30 < tp> as a english speaker end reader, I'm restricted to english sites
2014-02-23T08:37:55 < upgrdman> dongs: yes
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2014-02-23T08:39:33 < tp> dongs:  a pair of centre pivot Bacho pliers were about $60AUD, 30 years ago, so the prices aren't so bad
2014-02-23T08:45:31 < dongs> mhm
2014-02-23T08:56:10 < dongs> paying for proper tools once usually works out cheaper than buying shitty tools over and over..
2014-02-23T08:56:44 < tp> absolutely
2014-02-23T08:57:09 < tp> hence buying the best you can afford at the time is advisable
2014-02-23T09:12:44 < tp> that's what I've been doing all my life, and it's always worked out best
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2014-02-23T09:16:17 < Robint91> hi all
2014-02-23T09:16:26 < tp> hello
2014-02-23T09:19:00 < Robint91> does anyone know how long it takes to do a 2048 point FFT on a stm32f4 (FPU or DSP)
2014-02-23T09:23:19 < dongs> ibet emeb does
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2014-02-23T09:43:22 < Thorn> what does "FPU or DSP" mean
2014-02-23T09:43:39 < Thorn> floating point or fixed point?
2014-02-23T09:45:10 < Robint91> Thorn, using A the fpu instructions or B the dsp instructions
2014-02-23T09:47:28 < Thorn> iirc dsp instruction work with fixed point and there are 2 fixed point formats that they support (q31 and q15), q15 would be somewhat faster
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2014-02-23T11:55:39 < dongs> who chatkilled
2014-02-23T11:56:53 < jpa-> let's make a kickstarter so that we can hire someone to chat here
2014-02-23T11:57:02 < dongs> yes!
2014-02-23T11:57:07 < fbs>  beaky?
2014-02-23T11:57:14 < dongs> no
2014-02-23T11:57:24 < dongs> http://www.youtube.com/watch?v=dLiJ01eBSRc attn laurenceb
2014-02-23T11:57:25 < jpa-> it has to have bluetooth and iphone and android applications
2014-02-23T11:57:55 < dongs> gonna try using encoder.
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2014-02-23T12:10:31 < dongs> hm
2014-02-23T12:10:36 < dongs> TIm->CNT changes by +- 2
2014-02-23T12:10:37 < dongs> ...
2014-02-23T12:10:42 < dongs> consistently
2014-02-23T12:10:56 < dongs> polarity?
2014-02-23T12:12:41 < jpa-> what kind of an encoder is it?
2014-02-23T12:12:51 < dongs> http://i.imgur.com/s34boMz.jpg
2014-02-23T12:12:52 < dongs> that one
2014-02-23T12:13:31 < dongs> nvm
2014-02-23T12:13:36 < dongs> if i spin it super carefully
2014-02-23T12:13:40 < dongs> i can see it hitting 1 first then 2
2014-02-23T12:13:51 < dongs> it onyl clicks on 2s
2014-02-23T12:13:53 < jpa-> http://www.digikey.com/product-detail/en/EVE-JBBF2020B/P12336-ND/593499
2014-02-23T12:13:54 < jpa-> yeah
2014-02-23T12:14:10 < jpa-> datasheet agrees
2014-02-23T12:14:22 < dongs> which part specifies that?
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2014-02-23T12:14:33 < jpa-> it's at the very end, the waveform
2014-02-23T12:14:46 < jpa-> "detent steady point" only at every second step
2014-02-23T12:14:54 < dongs> yeah i see it
2014-02-23T12:15:00 < dongs> neat
2014-02-23T12:15:13 < jpa-> pretty common thing to do, IIRC it had some advantages that i cannot remember
2014-02-23T12:15:44 < jpa-> you can set the STM32 timer to only count on one input and it will count on 1s
2014-02-23T12:15:58 < dongs> nah i dont care
2014-02-23T12:16:01 < dongs> its just going to be for UI
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2014-02-23T13:17:45 < dongs> does chibios "work"
2014-02-23T13:17:50 < Tectu_> yes
2014-02-23T13:17:53 < dongs> in keil?
2014-02-23T13:17:56 < Tectu_> yes
2014-02-23T13:18:04 < dongs> does it force using hal?
2014-02-23T13:18:05 < Tectu_> http://chibios.org/dokuwiki/doku.php?id=chibios:community:guides:keil_uvision_chibios_rt_how-to
2014-02-23T13:18:07 < Tectu_> no
2014-02-23T13:18:10 < Tectu_> you can just use the kernel
2014-02-23T13:18:19 < Tectu_> HAL and kernel are separated, even licensed differentely
2014-02-23T13:18:37 < Tectu_> take a look at the link. Some russian dude took quite some effort to do that
2014-02-23T13:20:48 < dongs> damn
2014-02-23T13:20:51 < dongs> way too much crap
2014-02-23T13:23:17 < dongs> and why needs that fucking with cpreprocessor wiht IRAM stuff??
2014-02-23T13:23:27 < dongs> does chibidongs abuse CCM entirely for OS buffers?
2014-02-23T13:23:28 < Tectu_> no idea about that
2014-02-23T13:23:32 < Tectu_> nope
2014-02-23T13:23:36 < dongs> then why is he doing it
2014-02-23T13:23:45 < Tectu_> no idea. I think that's his custom setup.
2014-02-23T13:23:53 < Tectu_> CCM is completely free. ChibiOS/RT does not access it
2014-02-23T13:24:02 < dongs> not according to that dialog
2014-02-23T13:24:06 < Tectu_> you get two linker scripts - one with and one without CCM but nothing is placed in there by default, afaik
2014-02-23T13:24:16 < dongs> keil doesnt use linker scripts, thankfully
2014-02-23T13:24:41 < Tectu_> ah, right.
2014-02-23T13:24:46 < Tectu_> why keil?
2014-02-23T13:25:48 < dongs> jebus.
2014-02-23T13:25:52 < dongs> because I use shit that WORKS
2014-02-23T13:26:03 < Tectu_> so why ChibiOS?
2014-02-23T13:26:06 < dongs> makefiles, gcc, black rectangular windows scrolling miles of text by = not work
2014-02-23T13:26:09 < Tectu_> (not in relation to the previous point)
2014-02-23T13:26:15 < dongs> Tectu_: exactly, thats why im not going to be using it
2014-02-23T13:26:29 < dongs> was just checking how much effort it would be to try, seems more than I'm willing to spend on it
2014-02-23T13:26:36 < Tectu_> that for sure indeed.
2014-02-23T13:26:45 < Tectu_> ChibiOS/RT is 1 minute of effort when using Makefile
2014-02-23T13:26:50 < Tectu_> but 1 hour when not
2014-02-23T13:27:19 < Tectu_> I don't like all that IDE crap like KEIL anyway
2014-02-23T13:27:28 < Tectu_> I'm a totally makefile + rectangular windows guy
2014-02-23T13:28:17 < Tectu_> dongs, using uGFX with KEIL would be easier ;-)
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2014-02-23T14:13:37 < Robint91> dongs_, what the fock
2014-02-23T14:14:02 < dongs_> sup?
2014-02-23T14:14:21 < Robint91> dongs_, that video
2014-02-23T14:14:24 < dongs_> o rite
2014-02-23T14:15:40 < dongs_> man, fuck. i have like 50k 0.1uF 0402 caps
2014-02-23T14:15:44 < dongs_> i'll never go through all that shit
2014-02-23T14:15:52 < dongs_> gonna have to start using 0402 for bypassing shit
2014-02-23T14:18:31 < madist> 50k ? how many reels is that ?
2014-02-23T14:18:35 < dongs_> only 5
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2014-02-23T14:19:32 < Robint91> 10uF caps -> 1206/0805/0603
2014-02-23T14:19:49 < dongs> 0805is chepest for 10uF
2014-02-23T14:20:11 < dongs> TDK 10uf X5R 0805
2014-02-23T14:20:28 < madist> 0603 will fit in a 0805 footprint most of the time
2014-02-23T14:20:34 < madist> so you don't need to buy 0805
2014-02-23T14:20:37 < dongs> only if y ou used sparkfun eagle library
2014-02-23T14:26:35 < Robint91> dongs, do you know a chinese pcb fab that does custom layer stacks?
2014-02-23T14:26:59 < dongs> i know a taiwan one , but it won't be cheap
2014-02-23T14:27:16 < dongs> i dont do any highspec pcb in china
2014-02-23T14:28:51 < Robint91> dongs,  I need 4 layers, first substrace rogers, the two others FR4
2014-02-23T14:29:23 < dongs> yeah, probably possible. i can ask, but like i said, unless youre buying 100s it probly wont be cheap
2014-02-23T14:36:02 < dongs> k will just use coos for this stuff as usaul
2014-02-23T14:36:10 < dongs> already have working shit wirh it and no need to learn new crap
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2014-02-23T14:41:15 < Laurenceb__> what ircbot does Steffanx use?
2014-02-23T14:41:25 < Laurenceb__> im looking for a sane to configure irc bot
2014-02-23T14:41:31 < Tectu_> he uses some rpi with archlinux on it
2014-02-23T14:41:36 < Tectu_> then screen to it, afaik.
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2014-02-23T14:41:51 < Tectu_> at least some RPI is invovled, not sure about the screenig
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2014-02-23T14:42:42 < Tectu_> and arch linux <3
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2014-02-23T15:59:33 < dongs> hmpf
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2014-02-23T16:23:49 < dongs> hitting hardfault and cant figure out waht causes it
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2014-02-23T16:27:54 < zyp> did you do the obvious things already? like checking what kind of fault it is by reading SCB_CFSR?
2014-02-23T16:29:57 < dongs> welp it works now
2014-02-23T16:30:04 < dongs> must haev been task stack overflow
2014-02-23T16:30:09 < dongs> i moved stuff around a bit
2014-02-23T16:31:06 < dongs> zyp, any smart way to catch (but ignore) spurious IRQs but only act on the last one?
2014-02-23T16:32:17 < zyp> what do you mean?
2014-02-23T16:32:33 < dongs> like this encoder thing, if i spin it fast, i'll get like 10 timer update interrupts
2014-02-23T16:32:46 < dongs> but i want to just act on last one.
2014-02-23T16:33:08 < zyp> how do you define what is the last one?
2014-02-23T16:33:18 < dongs> it stops making them
2014-02-23T16:33:24 < zyp> for how long?
2014-02-23T16:33:29 < dongs> like whatever
2014-02-23T16:33:41 < dongs> do I set some kinda timer or something and then  do stuff when it fires?
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2014-02-23T16:35:25 < zyp> I just let the timer count from the encoder without interrupting or anything, and then I just poll the count whenever I need to know the value
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2014-02-23T16:36:39 < zyp> in your case I guess you'd want to trigger on the first timer update interrupt, set a deadline at some point in the future and turn off interrupts until then
2014-02-23T16:36:53 < zyp> then you poll the result and turn interrupts back on
2014-02-23T16:36:58 < dongs> o.
2014-02-23T16:37:00 < dongs> that sounds pretty good
2014-02-23T16:37:19 < zyp> that way you ignore all the steps between them and only act after a given time from the first one
2014-02-23T16:37:38 < dongs> yeah
2014-02-23T16:37:54 < zyp> and if the encoder is still moving, you get continous updates at a limited rate
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2014-02-23T16:45:14 < dongs> man chibios hal is retarded
2014-02-23T16:45:22 < dongs> tehy did same shit like libopenaidsstm32 and renamed all the registers/etc
2014-02-23T16:45:32 < dongs> from stm docs/headers
2014-02-23T16:45:37 < dongs> why hte fuck would anyone do that.
2014-02-23T16:45:48 < dongs> (not using chibios, just hitting various newbs failin to use it and pasting horrible looking code
2014-02-23T17:00:07 < Tectu_> dongs, then don't use the HAL
2014-02-23T17:00:11 < Tectu_> dongs, just use the kernel.
2014-02-23T17:00:31 < Tectu_> dongs, and personally I think that the chibios hal is a lot better than the libopenstm32 crap
2014-02-23T17:00:33 < dongs> tectu, coOs i can just drop a single folder into my project, add lib\CoOS to include path, and done
2014-02-23T17:00:44 < dongs> when can I do that with chibidongs?
2014-02-23T17:00:58 < Tectu_> dongs, all you need is  /os
2014-02-23T17:01:07 < Tectu_> dongs, and /various if you want the fancy stuff like chprintf() and such.
2014-02-23T17:01:36 < Tectu_> and there's an src and include dir in there. Nothing more.
2014-02-23T17:01:54 < Tectu_> adding them to your keil aids crap shouldn't take more than 2 mins
2014-02-23T17:02:42 < Tectu_> dongs, and if you want a smaller OS then go for FreeRTOS.
2014-02-23T17:02:47 < Tectu_> note that FreeRTOS sucks.
2014-02-23T17:02:48 < dongs> freertos is aids
2014-02-23T17:03:02 < dongs> they also have the most unreadable API ever
2014-02-23T17:03:06 < dongs> xFuckOff
2014-02-23T17:03:29 < Tectu_> agreed
2014-02-23T17:03:54 < dongs> i don't "want" a smaller OS, I'm already happy with coos
2014-02-23T17:04:10 < Tectu_> so why looking for chibios?
2014-02-23T17:05:58 < dongs> just considered it for ~30 seconds
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2014-02-23T17:29:40 < beaky> hello
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2014-02-23T17:32:22 < trepidaciousMBR> Hi
2014-02-23T17:38:49 < beaky> is stm32f4 better than stm32f3 for smps?
2014-02-23T17:39:35 < gxti> lol...
2014-02-23T17:39:48 < beaky> i am thinking of porting my smps to stm32f4 now
2014-02-23T17:41:20 < qyx_> lol
2014-02-23T17:41:25 < beaky> ?
2014-02-23T17:41:29 < Laurenceb__> http://hackaday.com/2014/02/22/smart-reflow-oven-is-over-engineered/#more-115493
2014-02-23T17:41:54 < beaky> "A FPGA Controlled Reflow Oven" hah overkill
2014-02-23T17:43:27 < qyx_> it is competing with your F4 controller smps
2014-02-23T17:43:32 < qyx_> *controlled
2014-02-23T17:44:43 < beaky> nah i think stm32f3 is underkill
2014-02-23T17:44:58 < nine-tails> yes
2014-02-23T17:44:58 < beaky> because i have to run both ethernet, lcd gui as well as a tight smps control loop
2014-02-23T17:45:16 < MrMobius> beaky wants an smps so sensitive he wont even need capacitors
2014-02-23T17:47:22 < trepidaciousMBR> beaky: smps?
2014-02-23T17:47:45 < beaky> switch-mode power supply
2014-02-23T17:47:57 < beaky> http://en.wikipedia.org/wiki/Switched-mode_power_supply
2014-02-23T17:48:09 < trepidaciousMBR> beaky: You're making one with an MCU?
2014-02-23T17:48:49 < beaky> yes
2014-02-23T17:48:50 < madist> program an MCU to simulate an SMPS
2014-02-23T17:49:08 < madist> then you will never need to build another SMPS
2014-02-23T17:49:16 < madist> you can just tweak parameters on the MCU
2014-02-23T17:49:24 < beaky> thats what im doing
2014-02-23T17:49:34 < madist> you stole my idea ?
2014-02-23T17:49:34 < beaky> smps config via ip
2014-02-23T17:49:45 < trepidaciousMBR> beaky: Why not just use a dedicated IC?
2014-02-23T17:50:06 < beaky> dedicated ICs dont offer true digital power control
2014-02-23T17:50:14 < MrMobius> lol
2014-02-23T17:53:06 < trepidaciousMBR> beaky: Do you NEED that? Seems like there are probably more reasonable things to do with an MCU
2014-02-23T17:53:44 < trepidaciousMBR> beaky: I would have thought it would be hard to get a decent frequency with even a good MCU, and it will push the cost way up
2014-02-23T17:53:53 < beaky> thats one challenge
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2014-02-23T17:55:52 < beaky> i will need mppt with programmable battery charge algorithm.
2014-02-23T17:56:27 < beaky> with 144MHz pwm the resolution is enough for that
2014-02-23T17:56:39 < MrMobius> im not sure that is even enough beaky
2014-02-23T17:56:46 < MrMobius> you should probably buy an fpga board for this
2014-02-23T17:56:48 < beaky> not enough?
2014-02-23T17:56:53 < MrMobius> so you can do paralel processing
2014-02-23T17:56:56 < beaky> but i've never used an fpga before
2014-02-23T17:57:06 < gxti> argh, the urge to provide useful advice is irresistible
2014-02-23T17:57:27 < beaky> but i love advice :(
2014-02-23T17:58:26 < trepidaciousMBR> beaky: You're trying to do a fairly simple thing very fast, FPGAs are good for that (not JUST for that, but you know), an MCU is better for something complex but not requiring a very high update rate. Plus MCUs are generally much less brainbending and a bit cheaper. But if you really really want to make an SMPS I guess it would work ;)
2014-02-23T17:58:28 < beaky> plus i get to sit back and drink red bull while stm32f3 ethernet client logs battery charge profiling to my home
2014-02-23T17:59:06 < trepidaciousMBR> beaky: But you'll have to mess around with either a super fast ADC or stuff with comparators etc. that you could just get on a super cheap, well tested, high performance IC for almost no money ;)
2014-02-23T17:59:07 < beaky> wow so i should learn an fpga?
2014-02-23T17:59:16 < gxti> no
2014-02-23T17:59:21 < trepidaciousMBR> beaky: IMHO you should find something better to do with an MCU
2014-02-23T17:59:21 < gxti> you should use a SMPS chip
2014-02-23T17:59:32 < gxti> and learn to make the MCU tell it what to do
2014-02-23T17:59:50 < beaky> so i just have MCU be part of the feedback loop?
2014-02-23T17:59:57 < beaky> rather than driving the whole thing?
2014-02-23T18:00:00 < gxti> no, not part of the feedback loop.
2014-02-23T18:00:05 < trepidaciousMBR> beaky: No, why bother? Just use the MCU to pick a voltage, done.
2014-02-23T18:00:25 < trepidaciousMBR> beaky: Maybe a current limit too I guess, depends what you actually want to do
2014-02-23T18:02:52 < beaky> what if i need to manage multiple dc-dc converter stages
2014-02-23T18:03:10 < beaky> e.g. multiphase boost + full bridge inverter
2014-02-23T18:03:23 < trepidaciousMBR> Looks like there is some kind of moth-to-flame thing with MCUs and SMPS: http://www.edaboard.com/thread13142.html
2014-02-23T18:03:52 < trepidaciousMBR> beaky: Find ICs that do what you want, solder them to a board?
2014-02-23T18:04:16 < gxti> trepidaciousMBR: well, it's not a completely retarded idea, i was considering it for a very specific case but ultimately decided not to
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2014-02-23T18:05:42 < trepidaciousMBR> gxti: It just seems like overkill, especially if its a hobby project where you can probably do something much more interesting with less effort.
2014-02-23T18:07:50 < gxti> the trouble is that if you want any more precision than a digipot gets you, you start needing some analog skillz because most controllers don't have a "put voltage here" input
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2014-02-23T18:10:49 < beaky> http://www.ti.com/lit/ml/slup232/slup232.pdf
2014-02-23T18:12:37 < beaky> limited resolution is the big drawback for me, but i guess 10 milivolt resolution is okay for charging lifepo
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2014-02-23T18:13:34 < beaky> btw anyone here used keil rtx
2014-02-23T18:13:37 < beaky> is it good?
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2014-02-23T18:18:30 < Robint91> http://www.infineon.com/cms/en/product/rf/mmw-mmic/BGT24MTR11/productType.html?productType=db3a30443ff7943901400b1ba90516fa
2014-02-23T18:18:34 < Robint91> leave this here
2014-02-23T18:18:42 < Robint91> 24GHZ RADAR SoC
2014-02-23T18:18:59 < Robint91> just add a baseband processor
2014-02-23T18:19:08 < beaky> omg
2014-02-23T18:19:18 < Robint91> only 16.5
2014-02-23T18:20:10 < Blok> I am trying to measure line votage, but without much success. My setup is rectifier bridge, voltage divider and ADC input on an stm32. Has anyone done this successfully?
2014-02-23T18:20:35 < Robint91> why the rectifier?
2014-02-23T18:21:16 < gxti> why do you think, Robint91?
2014-02-23T18:21:44 < Robint91> gxti, the is making to to difficult
2014-02-23T18:21:45 < gxti> Blok: what about it doesn't work?
2014-02-23T18:21:50 < Blok> The uC migth get sad if it gets a push in the wrong direction
2014-02-23T18:23:41 < Blok> gxti: Yes, well, I am unable to measure the waveform and the problem is (most likely) noise. What kind of noise do I need to account for? I have set the current through the divider to 1mA (in my head that seemed to be a lot)
2014-02-23T18:24:02 < Blok> (unable to measure == lack of proper instruments to verify the waveform)
2014-02-23T18:24:43 < madist> Blok: how is the mains isolated ?
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2014-02-23T18:25:50 < Blok> madist: distance is my best answer to that :(
2014-02-23T18:26:10 < qyx_> lol
2014-02-23T18:26:28 < gxti> i'll spare you the "BLURGH MAINS STAY AWAY DANGER DANGER"
2014-02-23T18:26:46 < gxti> but you should probably use a transformer, like an AC wall wart
2014-02-23T18:27:15 < gxti> here's something simple: just a single diode into a capacitor, then your voltage divider. that way you get DC to measure.
2014-02-23T18:27:33 < beaky> ac coupling ftw
2014-02-23T18:27:35 < qyx_> or transformer, ac couple, dc bias in the middle
2014-02-23T18:27:47 < Blok> gxti: Well, that is teh proper way to do it, but they are big in size and won't work in this case.
2014-02-23T18:28:29 < Blok> I use/want to use the measurement from the uC to find the zero crossing point.
2014-02-23T18:28:36 < gxti> you should have said that to begin with
2014-02-23T18:28:40 < Blok> sorry
2014-02-23T18:28:46 < gxti> not 'measure line voltage'
2014-02-23T18:28:59 < gxti> there are a zillion line crossing circuits on the googles
2014-02-23T18:29:10 < qyx_> or simple opamp & optoisolator
2014-02-23T18:29:15 < gxti> what's it for?
2014-02-23T18:30:23 < Blok> The goal is to dim.
2014-02-23T18:31:38 < qyx_> http://www.microchip.com/forums/download.axd?file=0;603904
2014-02-23T18:31:39 < gxti> triac?
2014-02-23T18:31:54 < Blok> Yup, that part works just fine
2014-02-23T18:32:04 < qyx_> this one seems to be too simple
2014-02-23T18:32:07 < qyx_> but should work
2014-02-23T18:32:10 < Blok> and it is even opto isolated :P
2014-02-23T18:32:47 < gxti> that type should be fine for use with a MCU
2014-02-23T18:32:59 < Blok> the problem is to get a decent measurement from my current setup
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2014-02-23T19:29:29 < qyx_> meh, max3232 has 1V ripple with 1uF/16V 0603 X5R or so
2014-02-23T19:29:49 < qyx_> nearly 2V with 100nF/50V 0603
2014-02-23T19:30:46 < qyx_> and about 150mV with 4.7uF/16V 0805 Y5V
2014-02-23T19:32:46 < jpa-> capacitor pumps are terrible at ripple
2014-02-23T19:32:59 < jpa-> not only at their output voltages but they also tend to make all your power rails ripple
2014-02-23T19:33:46 < jpa-> i once had a max232 and a poorly designed unstable opamp circuit on the same board... the result waveforms were very funky
2014-02-23T19:34:03 < englishman> what are you using rs232 for? may i ask.
2014-02-23T19:34:07 < englishman> being 2014 and all :)
2014-02-23T19:34:30 < qyx_> many industrial devices use it for communication
2014-02-23T19:34:34 < jpa-> can't say about zyp, for me it was quite a few years ago, back when i still thought USB was scary :P
2014-02-23T19:34:34 < qyx_> i have to be compatible in some way
2014-02-23T19:34:42 < jpa-> ett
2014-02-23T19:34:44 < jpa-> *err
2014-02-23T19:34:45 < jpa-> *qyx
2014-02-23T19:35:23 < gxti> wouldn't it be nice if rs232 had died a horrible death and rs422 was used instead? oh well
2014-02-23T19:35:23 < qyx_> englishman: i have a stm32 device which has to communicate with some another measurement device with rs232
2014-02-23T19:35:49 < qyx_> which is like 10y old
2014-02-23T19:36:41 < qyx_> power rail ripple is ~15mVpp
2014-02-23T19:37:26 < qyx_> which is quite good (smps is used)
2014-02-23T19:39:05 < qyx_> oh no, 100mV :S
2014-02-23T19:39:12 < qyx_> measured wrong pin
2014-02-23T19:41:09 < bvernoux> rs232 will never die ;)
2014-02-23T19:41:26 < bvernoux> it is always required for debug or linux terminal ;)
2014-02-23T19:41:52 < gxti> talking about rs232 specifically, not uart in general
2014-02-23T19:42:41 < gxti> pain in the dick to work with in modern hardware and it's single ended so it's not very noise immune anyway
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2014-02-23T19:44:25 < gxti> thankfully it's pretty much gone from consumer PCs
2014-02-23T19:45:04 < bvernoux> anyway RS422 is only hardware
2014-02-23T19:45:12 < bvernoux> and transparent for the device
2014-02-23T19:45:16 < jpa-> somewhat noise immune if you put the load resistors so that it operates as 10mA current loop.. but then half of RS232 devices won't have proper current driving capabilities
2014-02-23T19:45:21 < qyx_> go to some shop and look behind the POS computer
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2014-02-23T19:45:38 < gxti> oh i know qyx_, it's still everywhere
2014-02-23T19:45:39 < qyx_> there are loads of rs232's
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2014-02-23T19:45:53 < gxti> but it's gone from consumer PCs so the old farts who think it's the best thing since jesus will hopefully start forgetting it exists
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2014-02-23T20:21:37 < emeb_mac> ugh - dan's small parts.
2014-02-23T20:21:45 < emeb_mac> that's been around for ages.
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2014-02-23T22:44:15 < effractur> hi, can someone link me resources that explain the letter W in STM32F405RGT6W   ?
2014-02-23T22:50:11 < zyp> there aren't any
2014-02-23T22:50:17 < zyp> why do you want to know?
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2014-02-23T22:51:05 < zyp> and where did you get that number from?
2014-02-23T22:51:51 < englishman> its on their parts list
2014-02-23T22:51:54 < englishman> http://www.st.com/web/catalog/mmc/FM141/SC1169/SS1577/LN1035/PF252144#
2014-02-23T22:52:13 < englishman> datasheet says those suffixes are for "programmed parts" i wonder what that means
2014-02-23T22:53:47 < zyp> probably not
2014-02-23T22:54:21 < zyp> programmed parts is when you buy enough volume that you can get them preprogrammed with your code
2014-02-23T22:54:58 < upgrdman> what kind of volume would warrant that? 100k?
2014-02-23T22:56:07 < effractur> at farnell the STM32F405RGT6V and STM32F405RGT6W are 23 euros the STM32F405RGT6 is like 11
2014-02-23T22:56:15 < effractur> and i can't seem to find the difference
2014-02-23T22:56:58 < zyp> I guess it's just a packing options, like how TR is tape&reel
2014-02-23T23:07:25 < madist> effractur: which farnell ?
2014-02-23T23:08:43 < qyx_> effractur: it is 9e/1000
2014-02-23T23:09:26 < qyx_> probably different packaging
2014-02-23T23:15:19 < madist> is it possible the cheaper one is an earlier silicon revision ?
2014-02-23T23:15:29 < madist> (more errata)
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2014-02-23T23:15:39 < effractur> http://nl.farnell.com/jsp/search/browse.jsp?N=2021+203063+110186767&Ntk=gensearch&Ntt=STM32F401&Ntx=mode+matchallpartial&No=0&getResults=true&appliedparametrics=true&locale=nl_NL&divisionLocale=nl_NL&catalogId=&skipManufacturer=false&skipParametricAttributeId=&prevNValues=2021+203063&mm=1001983||,&filtersHidden=false&appliedHidden=false&autoApply=false&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D2021%2B203063%26Ntk%3Dgensearch%26Nt
2014-02-23T23:15:52 < effractur> ee wrong one
2014-02-23T23:15:58 < effractur> http://nl.farnell.com/jsp/search/browse.jsp;jsessionid=KIQMWTMJXK5TKCQLCIPJN4Q?N=0&Ntk=gensearch&Ntt=STM32F405RGT6&Ntx=mode+matchallpartial&exposeLevel2Refinement=true&suggestions=false&ref=globalsearch&_requestid=133379
2014-02-23T23:16:02 < effractur> that one
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2014-02-24T01:46:29 < dongs> sup twitter
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2014-02-24T03:22:50 < Thorn> fuck st and their reference manuals
2014-02-24T03:24:30 < Thorn> if you read the LTDC chapter of rm0090 without paying attention, you'll learn that it supports displays up to 800x600 pixels. if you read it carefully it only supports up to 640x480.
2014-02-24T03:25:08 < Thorn> if you read it *extra* carefully you'll see that it contradicts itself and 800x600 support may or may not be possible.
2014-02-24T03:25:34 < Thorn> fortunately someone on a forum says they were able to configure it for 800x600
2014-02-24T03:26:03 < zyp> unfortunately, you aren't able to? :)
2014-02-24T03:26:24 < zyp> (I felt that would be the missing plot twist)
2014-02-24T03:26:27 < Thorn> ("it" = either ltdc core or ltdc chapter in the manual, as appropriate)
2014-02-24T03:27:45 < Thorn> I can't try it yet, don't have displays or a usable board yet (unless I'm able to use my discovery with jumper wires or something)
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2014-02-24T03:31:55 < Thorn> although pixel clock is going to be 40MHz or more in my case, so not sure about jumper wires
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2014-02-24T03:46:19 < aadamson> http://www.youtube.com/watch?v=j45JHzq7oNU - I think someone posted this way earlier this morning.  800x600 on oled and 429
2014-02-24T03:46:56 < aadamson> maybe I should say way earlier this morning (sunday) US time I saw it anyway
2014-02-24T03:49:22 < Thorn> 800x480 display for a reflow oven? should have used an fpga so it doesn't feel underengineered
2014-02-24T03:51:04 < Thorn> they are using a PSoc5 though
2014-02-24T03:51:38 < Thorn> two cortex-m chips in one oven sort of make up for the lack of an fpga
2014-02-24T04:23:10 < qyx_> i see the russians have good sense of humor
2014-02-24T04:25:57 < Laurenceb__> meanwhile sane people use a 555
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2014-02-24T05:25:08 < dongs> haha 800x480, but not touch screen? fuck off.
2014-02-24T05:28:05 < dongs> oh it is touch sreen
2014-02-24T05:28:06 < dongs> cool
2014-02-24T05:28:10 < dongs> perfectly overengineered
2014-02-24T05:31:48 < dongs> http://www.vizictechnologies.com/#!smartgpu-2/c1rc2
2014-02-24T05:31:50 < dongs> what hte fuck is this
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2014-02-24T05:32:57 < dongs> i wonder which shitty arm is that
2014-02-24T05:33:15 < dongs> LPC?
2014-02-24T05:44:06 < madist> shows the Atmel logo in this pic: http://static.wixstatic.com/media/f7ab2a_07b8c692300b50a73f9846697bedcdbf.jpg
2014-02-24T05:44:26 < madist> nvm. that's a different chip/
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2014-02-24T05:55:15 < dongs> http://www.st.com/web/en/catalog/tools/PF257901
2014-02-24T05:55:17 < dongs> why is this nrnd
2014-02-24T06:01:44 < Thorn> backlight: Vled min 21V, typ 22.4, max 23.8. Iled typ = 40mA. is this supposed to be a CC or CV drive?
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2014-02-24T06:06:24 < Thorn> looking at http://www.ti.com/lit/ds/symlink/tps61041.pdf
2014-02-24T06:12:12 < dongs> looks ok. does pinout match to a afew others so youre not locked in to a single shitty vendor?
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2014-02-24T06:16:27 < Thorn> do boost regs generally allow PWMing their enable pin or is this one special?
2014-02-24T06:18:22 < gxti> not generally, no
2014-02-24T06:18:45 < gxti> well, it might be typical for ones meant for backlight purposes
2014-02-24T06:20:11 < dongs> 90 fucking balls
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2014-02-24T06:33:13 < dongs> oo
2014-02-24T06:33:17 < dongs> smartyring is  gonna ship in april
2014-02-24T06:33:50 < dongs> https://images.indiegogo.com/file_attachments/342223/files/20140131212059-smpc2.jpg?1391232059
2014-02-24T06:33:54 < dongs> https://images.indiegogo.com/file_attachments/342225/files/20140131212114-smpc3.jpg?1391232074
2014-02-24T06:35:53 < Thorn> is that the discrete led matrix thing we discussed some time ago?
2014-02-24T06:36:55 < dongs> yes
2014-02-24T06:37:10 < Thorn> this datasheets explicitly allows pwm http://www.st.com/web/en/resource/technical/document/datasheet/CD00299098.pdf
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2014-02-24T06:42:35 < gnomad> what do you get by PWMing the enable pin?
2014-02-24T06:43:41 < gnomad> adjusting the output voltage?
2014-02-24T06:44:22 < gxti> or current in the case of LEDs
2014-02-24T06:44:58 < gnomad> that would make sense.
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2014-02-24T06:45:37 < gnomad> unless the PWM is used for dimming the LED while retaining color temp
2014-02-24T06:46:40 < gnomad> which is just letting you toggle the enable line real fast.
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2014-02-24T06:52:45 < Thorn> the display datasheet recommends against PWMing the 22V because of possible arcing in the FPC cable (I imagine the boost reg won't like load transients like that)
2014-02-24T06:54:18 < Thorn> so the only way to PWM the backlight is to PWM the enable pin on the regulator, and one application example in the tps61041 datasheet shows exactly that (but no mention in the text)
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2014-02-24T07:25:01 < madist> flyback: come back to ##electronics
2014-02-24T07:29:20 < madist> are you banned ?
2014-02-24T07:30:36 < madist> i don't think you're banned. the closest i can find in the ban list is this: *!*@c-71-224-212-179.hsd1.pa.comcast.net
2014-02-24T07:40:33 < gxti> i guess we have something in common
2014-02-24T07:46:26 < madist> this is odd. i can see all the channels gxti is in. freenode normally hides that info.
2014-02-24T07:46:47 < gxti> it is a user mode, i deliberately turned it off.
2014-02-24T07:47:05 < gxti> you can't see ALL the channels i'm in because some are secret.
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2014-02-24T08:31:28 < Thorn> why is there #boost but not #buck
2014-02-24T08:33:12 < madist> #bucks are in #bearcave
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2014-02-24T08:42:47 < dongs> lyback> http://nuttx.org/
2014-02-24T08:42:51 < dongs> flyback: trash
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2014-02-24T08:57:00 < tp> hahah
2014-02-24T08:57:10 < tp> is this the comedy hour here ?
2014-02-24T08:59:11 < tp> flyback, I'm new here, no one knows me yet ...
2014-02-24T09:00:49 < gnomad> you've got the gist of things, but you ain't seen nothin' yet.
2014-02-24T09:01:35 < tp> I'm 59, so I've probably seen a fair bit, and I have the thick skin of a electronics technician
2014-02-24T09:01:44 < tp> so I'll be fine :)
2014-02-24T09:02:24 < tp> plus I work for myself and have to deal with the usual range of customers every day...
2014-02-24T09:03:44 < tp> I normally hang over in ##embedded, which is a nice polite group of mainly oldies, but thought I'd pop in here for a while
2014-02-24T09:05:12 < tp> and besides, if I don't like it here, I'll just leave, no big deal
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2014-02-24T09:27:00 < tp> me ? man it's been ages since Ive used a 8051
2014-02-24T09:27:31 < tp> I wrote a GPL programmer for one in the late 90's, it ran from a pc parallel port
2014-02-24T09:29:21 < tp> the old 8051 will probably never die tho, it got juiced up by NXP and they have some cool products, of which I have bought a few LPC Expresso kits, but their Linux support isnt good enough for me to play with them yat
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2014-02-24T11:09:25 < dongs> what endian is default on cortex? LE?
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2014-02-24T11:17:09 < Thorn> I've never heard of a big endian cortex-m even though it's supposed to be configurable afair
2014-02-24T11:17:29 < zyp> me neither
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2014-02-24T11:19:23 < Thorn> eastrising sent me a correct EMS tracking #
2014-02-24T11:20:22 < Thorn> afair when chip designers synthesize a cortex-m core they can choose LE, BE or both (settable via a register) but everybody chooses LE or something like that
2014-02-24T11:20:55 < vadmeste> Hello everbody. I would like to know if playing a  motion JPEG video will just use the ARM processor and not other hardware components, could anyone confirm ?
2014-02-24T11:21:37 < qyx_> what other components should it use?
2014-02-24T11:22:16 < Thorn> there isn't any hardware jpeg core that I know of
2014-02-24T11:22:17 < gnomad> well, hardware decoding, for one...
2014-02-24T11:22:31 < qyx_> of course it depends of your player implementation
2014-02-24T11:24:36 < vadmeste> yeah, thanks
2014-02-24T11:31:58 < zyp> Thorn, as far as I've read, the core samples an input during reset, and comes up as LE or BE depending on that
2014-02-24T11:44:47 < Thorn> seeed offers pcbs up to 8 layers http://www.seeedstudio.com/service/index.php?r=site/PremiumPcb
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2014-02-24T11:46:59 < zyp> sounds expensive
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2014-02-24T13:18:52 < beaky> hello
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2014-02-24T13:24:34 < dongs> what the fuck is _sync_sub_and_fetch
2014-02-24T13:25:35 < zyp> atomic subtract and return result?
2014-02-24T13:25:45 < dongs> yeah but thats gcc trash
2014-02-24T13:26:06 < dongs> is it just cocks--; type thing?
2014-02-24T13:26:11 < dongs> why would it need to be any more better htan that?
2014-02-24T13:26:22 < beaky> dongs: atomicity
2014-02-24T13:26:31 < beaky> i guess
2014-02-24T13:26:47 < zyp> yes, atomicity
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2014-02-24T13:29:01 < beaky> with cocks-- you are screwed if cocks is a shared object and gets mutated prior
2014-02-24T13:31:19 < zyp> beaky, do you share your cocks?
2014-02-24T13:31:56 < Thorn> if it's a word isn't it naturally atomic
2014-02-24T13:32:36 < zyp> Thorn, the operations aren't
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2014-02-24T13:34:54 < Thorn> btw http://www.liblfds.org/
2014-02-24T13:37:01 < zyp> Thorn, «*p -= y;» would compile to something like «r0 = y; r1 = p; ldr r2, [r1]; sub r0, r2, r0; str r0, [r1]» and *p might be modified between the load and the store
2014-02-24T13:39:31 < Thorn> right, load/store arch
2014-02-24T13:39:47 < Thorn> on x86 ++a; can compile to a single atomic instruction
2014-02-24T13:39:52 < Thorn> but not on arm
2014-02-24T13:41:05 < Thorn> btw, who said c++11 wasn't useful http://en.cppreference.com/w/cpp/atomic
2014-02-24T13:41:50 < beaky> c++11 is incredibly useful
2014-02-24T13:42:03 < beaky> thats why im sad the compiler that is bundled with keil doesn't support it at all
2014-02-24T13:45:11 < Steffann> ( dont use that )
2014-02-24T13:46:21 < Steffann> i like the license of that lib Thorn :)
2014-02-24T13:46:29 < beaky> I shouldn't use armcc? i thought it made the most optimal code for arm
2014-02-24T13:46:38 < Thorn> beats gpl any day
2014-02-24T13:47:17 < beaky> "There is no license. You are free to use this software in any way, for any purpose. Go forth and create wealth!" I guess I can use it for smps! :D
2014-02-24T13:47:50 < Steffann> Yes, you need a btree and queue for it.
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2014-02-24T13:48:08 < Steffann> Make sure you'll get your project on hackaday
2014-02-24T13:48:33 < beaky> nah all i need for smps is a basic array
2014-02-24T13:48:51 < beaky> oh and a nested vectored interrupt controller
2014-02-24T13:48:58 < beaky> :D
2014-02-24T13:49:26 < beaky> ok  i discovered this cool technique for smps control caled feedforward
2014-02-24T13:49:28 < Thorn> beaky: Real Engineers use tms320f28xxx for power electronics stuff. it has pwm with 150ps resolution.
2014-02-24T13:49:31 < beaky> it promises better line regulation
2014-02-24T13:49:52 < beaky> Thorn: true I was looking at that C2000 family before i chose stm32f3
2014-02-24T13:50:59 < beaky> i chose stm32f3 because it has way more analog peripherals stuffed into it, and way more advanced peripherals functionality in general
2014-02-24T13:51:46 < beaky> it lacks that magical high-res pwm from those TI mcus though :(
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2014-02-24T13:52:19 < Thorn> you need ethernet, lcd controller and I2S for voice messages right?
2014-02-24T13:52:23 < beaky> plus stm32f3 is more fun! :D and i get to hang out with you guys for help: there aint no ##c2000 on freenode :(
2014-02-24T13:52:38 < Thorn> or maybe even voice command recognition
2014-02-24T13:52:40 < beaky> right stm32f3 will help much more in implementing those side functionality
2014-02-24T13:53:05 < beaky> actually voice wasn't on my radar, but maybe as soon as i get ethernet working correctly i might bolt it on :D
2014-02-24T13:53:20 < Thorn> "for emergency stop, scream 'SHUT THE *** DOWN!!!' into the microphone."
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2014-02-24T14:01:16 < dongs> so waht does __sync_sub_and_fetch do
2014-02-24T14:01:20 < dongs> does it actually swi() or something?
2014-02-24T14:01:35 < dongs> or wahtever the fuck disables everythign
2014-02-24T14:02:20 < Thorn> ldrex strex probably
2014-02-24T14:08:54 < dongs> huh. i see nothing
2014-02-24T14:09:14 < dongs> do i just __ldrex; fag--; __strex? or what
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2014-02-24T14:22:51 < dongs> actually regressed the performance of atomic operations on Linux/ARM systems, because
2014-02-24T14:22:54 < dongs> the GCC intrinsics (e.g. __sync_fetch_and_add) are very poorly implemented at the
2014-02-24T14:22:57 < dongs> moment (and also always provide a full barrier, even when the caller doesn't need it).
2014-02-24T14:23:01 < dongs> haha
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2014-02-24T14:39:05 < Steffann> dongs browsing chrome mailinglist?
2014-02-24T14:39:21 < Steffann> or bugtracking system
2014-02-24T14:39:33 < Steffann> *chromium
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2014-02-24T14:39:46 < dongs> yes
2014-02-24T14:39:49 < dongs> looking for gcc failures
2014-02-24T14:39:54 < dongs> and seems that place generates a lot of htem
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2014-02-24T16:59:35 < dongs> who killed chat
2014-02-24T17:00:10 < zyp> not my fault
2014-02-24T17:00:33 < dongs> how's that dhl moving
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2014-02-24T17:04:27 < zyp> I see one is picked up, other is not
2014-02-24T17:05:54 < dongs> interesting.
2014-02-24T17:05:55 < dongs> wonder why.
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2014-02-24T17:15:28 < dongs> http://bcas.tv/paste/results/t7gkDO97.html
2014-02-24T17:15:31 < dongs> so gcc shit makes this
2014-02-24T17:15:36 < dongs> barrier, ldrex, subs, strex
2014-02-24T17:15:38 < dongs> just as i thought.
2014-02-24T17:15:47 < dongs> hmm.. why doesn't cmsis have some builtin shit for this?
2014-02-24T17:21:43 < zyp> that's not all
2014-02-24T17:22:08 < dongs> yes iti s?
2014-02-24T17:22:09 < zyp> you need to test the return code from strexb to make it useful
2014-02-24T17:22:25 < dongs> oh sure
2014-02-24T17:22:28 < dongs> there's a cmp afer it
2014-02-24T17:22:49 < zyp> if the result has (potentially been modified) after the load, the store will fail
2014-02-24T17:23:03 < dongs> so what does it do if it fails? retries?
2014-02-24T17:23:11 < zyp> only if you have it in a loop
2014-02-24T17:23:15 < dongs> the function doesnt do antthing tho?
2014-02-24T17:23:20 < dongs> i mean,, in code
2014-02-24T17:23:25 < dongs> its just __syncfoo(trash)
2014-02-24T17:23:26 < dongs> no loop
2014-02-24T17:23:31 < dongs> so wh would it care for return value
2014-02-24T17:23:41 < zyp> http://cgit.jvnv.net/laks/tree/os/mutex.h see trylock vs lock
2014-02-24T17:23:57 < dongs> heh
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2014-02-24T17:45:27 < dongs> hm
2014-02-24T17:45:39 < dongs> coos is being weird
2014-02-24T17:45:47 < dongs> is tehre any reason why i shouldnt be able to start nested tasks
2014-02-24T17:46:09 < dongs> ie taskx starting tasky
2014-02-24T17:46:43 < zyp> not really
2014-02-24T17:48:05 < dongs> hm. wtf
2014-02-24T17:48:09 < dongs> it just gets stuck
2014-02-24T17:50:20 < dongs> wtfuuuuuuuuuuuuuuuuuuuuuuuuuuuu
2014-02-24T17:52:34 < qyx_> pro software
2014-02-24T17:54:56 < Laurenceb__> troll mode
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2014-02-24T18:47:52 < dongs> looks like cpu time/task priority issue
2014-02-24T18:48:04 < dongs> i lowered busiest task priority and other stuff is working
2014-02-24T18:48:29 < dongs> i should probly get rid of whlie (!dma_done); type shit and replace with proper wait-for-shit stuff.
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2014-02-24T19:08:41 < trepidaciousMBR> Is CoOS any good then? It didn't fill me with too much confidence :(
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2014-02-24T19:08:59 < synic> what the eff is mbed?  Just a collection of libraries and an online compiler (how does that even work)?
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2014-02-24T19:17:14 < aadamson> trepidaciousMBR, I just happened to have the conversation with Dongs a couple days ago.... in his opinion, yes, for a light weight tasker for simple task :)
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2014-02-24T19:30:20 < trepidaciousMBR> aadamson: Ah cool. I'm a ChibiOS fanatic though, so I'll probably stick with that ;)
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2014-02-24T19:31:00 < trepidaciousMBR> synic: AFAIK you can use mbed properly now, just get the source and build it yourself. The online compiler thing did seem like a terrible idea, put my right off it until they open sourced.
2014-02-24T19:31:19 < HD_Mouse> hi, i'm trying to connect openocd to an STM3210C-eval board, but I can't figure out which scripts to use, what would be the appropriate command to start it up?
2014-02-24T19:31:28 < HD_Mouse> what I have so far is "openocd -f interface/stlink-v2.cfg -f board/stm3210c_eval.cfg"
2014-02-24T19:31:34 < HD_Mouse> but I get an error that says "invalid command name 'jtag_ntrst_delay'"
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2014-02-24T22:25:20 < tp> <HD_Mouse> I recall somrting about that command "jtag_ntrst_delay" being a issue, try commenting it out from the stm3210c_eval.cfg
2014-02-24T22:28:00 < HD_Mouse> tp: hey i talked to the people in #openocd and they helped sort me out
2014-02-24T22:28:31 < tp> excellent, openocd rocks!
2014-02-24T22:29:02 < HD_Mouse> you're right though, i ended up commenting that part out, and then I had to edit the board/stm3210c_eval.cfg script to point to target/stm32f1_stlink.cfg rather than target/stm32f1.cfg
2014-02-24T22:29:10 < HD_Mouse> then i had to add in some udev rules and then all was working
2014-02-24T22:29:17 < HD_Mouse> thanks for your input though :)
2014-02-24T22:29:35 < tp> next step SWD ?
2014-02-24T22:37:50 < HD_Mouse> yeah, got that working
2014-02-24T22:38:02 < tp> cool
2014-02-24T22:39:17 < fbs> oh my tp
2014-02-24T22:39:35 < tp> HD_Mouse:  tried gdbtui with it ?
2014-02-24T22:39:41 < tp> hey fbs :)
2014-02-24T22:40:29 < fbs> emacs gdb-many-windows ;)
2014-02-24T22:42:48 < tp> emacs lover!
2014-02-24T22:43:14 < tp> I did actually try a emacs tutorial the other day
2014-02-24T22:43:43 < tp> who knows, I may actually use it sometime
2014-02-24T22:44:30 < HD_Mouse> huh, i've actually never done it with that before
2014-02-24T22:44:32 < HD_Mouse> pretty neat flag
2014-02-24T22:44:36 < HD_Mouse> but yes, apparently it works
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2014-02-24T23:25:07 < gnomad> tp: i've been using emacs as my IDE since the late 80s.  most of the rest of the world is only just catching up in terms of functionality.
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2014-02-24T23:44:03 < tp> gnomad:  Im sure you're right, in my case I started with VI, then gvim and so have become used to that
2014-02-24T23:44:23 < tp> Ive always wanted to use emacs
2014-02-24T23:45:01 < tp> I've hardly ever used IDE's, I always made everything work from a makefile
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2014-02-24T23:46:43 < scrts> what is that electronics store page where everything is in yuan?
2014-02-24T23:47:08 < englishman> Taobao?
2014-02-24T23:47:24 < scrts> oh, that's it, thanks
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--- Day changed Tue Feb 25 2014
2014-02-25T00:01:59 < gnomad> tp: makefiles are the build and configuration sections in the emacs "ide" model.
2014-02-25T00:03:31 < tp> ahh
2014-02-25T00:03:57 < tp> and these days, I'm moving towards using Forth on the small devices I make
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2014-02-25T00:04:22 < tp> so I wont really need much in the way of traditional developenvironments
2014-02-25T00:05:11 < tp> I have Forth running on the STM32F4 and on a PIC 18 series, and I'm learning Forth at the moment
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2014-02-25T00:09:16 < gnomad> I wouldn't exactly call an stm32f4 a "small device"
2014-02-25T00:14:29 < bvernoux> gnomad: it is more high end MCU ;)
2014-02-25T00:14:52 < bvernoux> gnomad: anyway in size they are very small like LQFP64 or even smaller in BGA
2014-02-25T00:16:41 < gnomad> I was assuming "small" in the context of complexity, not physical size.
2014-02-25T00:18:25 < bvernoux> ST chipset are just a bit too expensive
2014-02-25T00:18:31 < bvernoux> especially they have no any version without embedded flash which could lower the price
2014-02-25T00:22:59 < tp> bvernoux:  I bought 200x STM32F051 in 32 pin and paid $0.65USD each, thats by far my cheapest micros ever!
2014-02-25T00:23:20 < bvernoux> tp: I speak mainly about STM32F4 ;)
2014-02-25T00:23:29 < tp> oh they have 64k flash and the usual swag of perepherals
2014-02-25T00:23:45 < tp> ahh
2014-02-25T00:24:16 < bvernoux> the problem is for example STM32F405 chipset price is about 10US$ and a TI eval Board with STM32F4 LQFP100 12US$ ;)
2014-02-25T00:24:40 < bvernoux> as comparison LPC43xxx are only 6US$
2014-02-25T00:24:48 < bvernoux> without Integrated Flash
2014-02-25T00:24:58 < bvernoux> but SPIFI cost is about 0.5USD
2014-02-25T00:30:50 < karlp> cry me a river :)
2014-02-25T00:31:40 < gnomad> I think it is fair to say that with all the competition in the ARM marketplace, just about everything is ridiculously cheap.
2014-02-25T00:32:46 < gnomad> heck, the most basic *supported* tool to flash a PIC is $40 -- and they are notorious for failing.
2014-02-25T00:32:47 < englishman> TI eval board with stm32?
2014-02-25T00:35:01 < scrts> bvernoux: there's no TI board with STM32F4 :)
2014-02-25T00:36:32 < bvernoux> I like TI but their MCU are too slow
2014-02-25T00:36:45 < bvernoux> and miss lot of cool features from ST or NXP
2014-02-25T00:37:35 < scrts> Freescale?
2014-02-25T00:37:59 < bvernoux> Freescale MCU are even more slower ;)
2014-02-25T00:38:10 < bvernoux> I really don't like what they have in MCU ...
2014-02-25T00:38:33 < gnomad> but it does look like freescale has the lowest power options.
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2014-02-25T00:38:36 < scrts> slower in what? frequency?
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2014-02-25T00:38:41 < scrts> their iMX series is nice
2014-02-25T00:38:49 < bvernoux> scrts: iMX are not really MCU
2014-02-25T00:38:57 < scrts> more like cpu, I Know
2014-02-25T00:39:11 < bvernoux> they are nice except the package they use ;)
2014-02-25T00:39:11 < scrts> however we use them in our company
2014-02-25T00:39:14 < gxti> one of the few in non-bga too
2014-02-25T00:39:14 < bvernoux> always BGA
2014-02-25T00:39:18 < bvernoux> with 3D ...
2014-02-25T00:39:24 < scrts> except a special series - automotive only
2014-02-25T00:39:37 < bvernoux> but for automotive they are slow ;)
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2014-02-25T00:40:23 < gxti> you're quite the pessimist
2014-02-25T00:40:39 < bvernoux> It is a shame to do not have some embedded CPU with LQFP or BGA256 max with Dual Cortex A15 ;)
2014-02-25T00:40:53 < bvernoux> and without all those 3D stuff
2014-02-25T00:41:25 < scrts> bvernoux: it's sufficient enough and also in automotive speed is not the biggest factor. Safety is.
2014-02-25T00:41:38 < bvernoux> scrts: I know i work for safety
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2014-02-25T00:41:53 < scrts> btw, in previous company we used COrtex-A5 from Atmel
2014-02-25T00:41:53 < bvernoux> scrts: but for my project I want more speed faster DSP instruction and GHz ;)
2014-02-25T00:41:57 < scrts> seemed really good
2014-02-25T00:42:06 < scrts> but.. also BGA :)
2014-02-25T00:42:18 < scrts> bvernoux: and what is your application?
2014-02-25T00:42:28 < bvernoux> scrts: SDR stuff ;)
2014-02-25T00:42:41 < bvernoux> that requires lot of power
2014-02-25T00:43:01 < scrts> I am also into SDR, however I am FPGA guy rather than DSP
2014-02-25T00:43:38 < bvernoux> the main problem with FPGA is they are expensive big or BGA ;)
2014-02-25T00:43:50 < bvernoux> and long to debug but yes it is the must
2014-02-25T00:43:59 < scrts> you believe DSPs are cheaper?
2014-02-25T00:44:07 < bvernoux> DSP are too limited ;)
2014-02-25T00:44:10 < bvernoux> I want hybrid
2014-02-25T00:44:13 < scrts> new Cyclone V series from Altera are damn cheap
2014-02-25T00:44:25 < bvernoux> But they are damn hot ;)
2014-02-25T00:44:32 < scrts> then use SoC
2014-02-25T00:44:37 < bvernoux> and power consumption is very high
2014-02-25T00:44:40 < scrts> Cyclone V SoC or Zynq
2014-02-25T00:44:45 < bvernoux> compared to native Cortex
2014-02-25T00:45:05 < scrts> you hardly can win in all places
2014-02-25T00:45:07 < bvernoux> anyway Cyclone V Soc and Zynq are nice
2014-02-25T00:45:24 < scrts> faster cpu requires more watts
2014-02-25T00:45:29 < bvernoux> soon I will play with it with my Parallella board ;)
2014-02-25T00:45:52 < scrts> I want to order one for myself, however they're not on stock
2014-02-25T00:45:55 < bvernoux> scrts: Cortex A17 seems fine for speed and power ;)
2014-02-25T00:46:08 < scrts> by who? like... AMD?
2014-02-25T00:46:33 < bvernoux> AMD ?
2014-02-25T00:46:35 < bvernoux> no
2014-02-25T00:47:06 < scrts> your SDR idea is a secret or you can tell me more about it? :)
2014-02-25T00:47:24 < bvernoux> scrts: you can see it here : airspy.com
2014-02-25T00:47:42 < bvernoux> scrts: it is not my project but our project with Youssef
2014-02-25T00:48:52 < scrts> I presume the frontend is something like in RTLSDR?
2014-02-25T00:49:44 < bvernoux> with 14nm CPU we could maybe have powerful ultra embedded stuff
2014-02-25T00:49:49 < bvernoux> scrts: r820t
2014-02-25T00:50:39 < scrts> and the price?
2014-02-25T00:51:25 < bvernoux> still not fixed but between 99USD and 149USD
2014-02-25T00:51:39 < scrts> anyway, this still doesn't do any demodulation or other stuff, I suppose you only transfer IQ samples through DMA to USB peripheral?
2014-02-25T00:52:14 < bvernoux> it's not IQ ;)
2014-02-25T00:52:50 < scrts> well 199USD was for hackRF, which is capable of RX and TX :)
2014-02-25T00:53:01 < ds2> bvernoux: What's the noise floor on that thing?
2014-02-25T00:53:25 < bvernoux> ds2: less than 80dB but we will do more test on final hw
2014-02-25T00:53:39 < bvernoux> it's 12bits ADC
2014-02-25T00:54:01 < bvernoux> scrts: We cannot compare it to HackRF it is not the same market
2014-02-25T00:54:18 < ds2> ADC's don't matter if the noise is from other stuff
2014-02-25T00:54:19 < bvernoux> scrts: I work for HackRF too ...
2014-02-25T00:54:25 < scrts> cool :)
2014-02-25T00:54:44 < bvernoux> scrts: I worked on it during more than 1 year
2014-02-25T00:54:45 < ds2> bvernoux: what market are you going for?
2014-02-25T00:54:57 < ds2> -80dBm seems a bit noisy for instrumentation
2014-02-25T00:55:03 < bvernoux> ds2: USB dongle SDR
2014-02-25T00:55:16 < ds2> as in general receiving or measurements?
2014-02-25T00:55:34 < scrts> well, I hope to do something with parallella also, so if you'd need fpga guy, pm me :)
2014-02-25T00:55:44 < bvernoux> ds2: look the page there is real signal received with it
2014-02-25T00:56:00 < bvernoux> scrts: ha yes you are welcome for FPGA stuff
2014-02-25T00:56:13 < bvernoux> scrts: I'm also working on daisho project it is pure FPGA stuff
2014-02-25T00:56:24 < bvernoux> scrts: see daisho github
2014-02-25T00:56:29 < ds2> bvernoux: hmm? trying to see how it compares to a spec an or vna type use
2014-02-25T00:56:49 < bvernoux> ds2: it compares to a FCD+
2014-02-25T00:57:22 < ds2> FCD+?
2014-02-25T00:57:31 < bvernoux> FunCube Pro+
2014-02-25T00:57:45 < tp> <bvernoux> my first cpu, a National Pace 16 bitter, was $300AUD back in 1976, so I see even the STMF4's as cheap
2014-02-25T00:57:46  * ds2 searches
2014-02-25T00:57:59 < scrts> bvernoux: will do
2014-02-25T00:58:06 < gxti> how do you get "FCD+" from a phrase with no D in it
2014-02-25T00:58:07 < bvernoux> tp: of course MCU are very cheap today
2014-02-25T00:58:09 < scrts> going to sleep now :)
2014-02-25T00:58:28 < ds2> ahhhh
2014-02-25T00:58:30 < bvernoux> gxti: hehe ;)
2014-02-25T00:58:52 < ds2> so this will not do well as a VNA if one is used to fancier stuff
2014-02-25T00:58:54 < bvernoux> FCD for FunCube DOngle
2014-02-25T00:59:27 < gxti> ds2: lol no...
2014-02-25T01:00:19 < ds2> spoiled by friends who have access to the fancy stuff :(
2014-02-25T01:00:42 < bvernoux> ds2: if you really want to see how it works just register and you will see
2014-02-25T01:01:26 < tp> <ds2> -80dBm seems hard to get above if it's in a noisy environment
2014-02-25T01:01:56 < ds2> I guess
2014-02-25T01:02:23 < tp> want -100dbm, you have to go and stand in a rural field, miles from anywhere
2014-02-25T01:02:33 < bvernoux> I doubt you can found something similar with 10MHz BW for that price
2014-02-25T01:02:56 < bvernoux> anyway we do not do that for money else it will be more expensive
2014-02-25T01:03:13 < bvernoux> and it will be not open source
2014-02-25T01:03:46 < tp> bvernoux:  what is it ?
2014-02-25T01:04:03 < bvernoux> ?
2014-02-25T01:04:31 < tp> what type of gear ?
2014-02-25T01:05:49 < ds2> if you have friends that own the tools... price is much less then that ;)
2014-02-25T01:06:21 < bvernoux> ds2: do it yourself in that case ;)
2014-02-25T01:07:57 < ds2> :)
2014-02-25T01:08:21 < tp> yep, always better to do yourself anyway
2014-02-25T01:08:32 < tp> that way you get waht you want, when you want
2014-02-25T01:08:43 < bvernoux> yes with the price you want
2014-02-25T01:08:52 < tp> yes
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2014-02-25T01:11:21 < bvernoux> bye
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2014-02-25T02:02:33 < dongs> sup pros
2014-02-25T02:02:46 < nine-tails> sup amateur
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2014-02-25T02:03:24 < dongs> i see titanmkd has been blogging
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2014-02-25T02:17:28 < tp> hey dongs, how goes all the development ? any new headaches today ?
2014-02-25T02:17:40 < tp> or too many to list ?
2014-02-25T02:18:44 < dongs> dunno, i have to assemble shit all day today.
2014-02-25T02:18:48 < dongs> no time for innovation
2014-02-25T02:18:57 < tp> hate that!
2014-02-25T02:19:48 < tp> when I have to stop the fun stuff here and assemble orders or build stock I hate it, but after a couple of days I settle in, then I hate stopping all that when the work is done .... <doh>
2014-02-25T02:22:30 < tp> Im testing 20m shielded cat5e cables today, they come from China, and I cant trust theyre not all good, so I have to cut open each bag, remove cable test, neaten up the roll, reseal bag, add tested sticker, repack ...
2014-02-25T02:22:55 < tp> gahh, not fun except for the mindless
2014-02-25T02:25:01 < dongs> exciting
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2014-02-25T02:28:16 < tp> yeah, my best fun thing
2014-02-25T02:28:59 < tp> second only to processing warranty claims
2014-02-25T02:35:42 < dongs> dont make shit that breaks
2014-02-25T02:35:50 < dongs> or put a disclaimer telling them to fuck fof
2014-02-25T02:35:54 < tp> hahah
2014-02-25T02:36:20 < tp> don't resell shit that breaks you mean ?
2014-02-25T02:36:26 < dongs> or that
2014-02-25T02:37:21 < tp> when I start doing that, I'll also be sure to marry only loyal, honest women who don't rip me off
2014-02-25T02:38:07 < tp> in the meantime, Ive got to refuel the pigs, and get them flight ready
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2014-02-25T07:45:11 < upgrdman> dongs: did you see lady aid's encroachment on your territory? http://www.youtube.com/watch?v=93WqO8hfE0M
2014-02-25T07:47:16 < dongs> is that the jewpad screen?
2014-02-25T07:47:20 < dongs> well she's only a year behind schedule
2014-02-25T07:47:26 < dongs> and i dont care, i've sold more of htem since she announced the shit
2014-02-25T07:47:36 < dongs> cuz who the fuck is gonna pay $250 for a bunch of wood and chinese-assembled shit
2014-02-25T07:48:28 < upgrdman> :)
2014-02-25T07:48:45 < dongs> i need to find free time and innovate hdmi version tho
2014-02-25T07:48:48 < dongs> cuz all tehse cloners cant do that
2014-02-25T07:48:57 < dongs> but i can and have all the hardware for it
2014-02-25T07:50:30 < madist> dongs: do you advertise ? how do people find your store ?
2014-02-25T07:50:40 < dongs> of course i dont
2014-02-25T07:50:44 < dongs> i dont do anything
2014-02-25T07:50:49 < dongs> if i did, i'd probably be 10x busier
2014-02-25T07:54:01 < Thorn> I should have chosen those innolux panels with 4 input voltages. the only place to get eastrising 7" seems to be buydisplay.com and their shipping is $50.
2014-02-25T07:54:42 < dongs> vendor dick-in
2014-02-25T07:57:11 < upgrdman> does innolux sell direct?
2014-02-25T07:57:22 < Thorn> I'm not sure it even exists lol
2014-02-25T07:57:23 < dongs> not in poor Thorn qtys
2014-02-25T07:57:32 < upgrdman> or can you buy small qtys from a vendor
2014-02-25T07:57:33 < Thorn> no more websites
2014-02-25T07:58:03 < Thorn> the displays could all be clones
2014-02-25T07:58:29 < emeb_mac> send in the clones
2014-02-25T07:58:43 < dongs> chat 4 profit
2014-02-25T08:00:45 < Thorn> anyway at070tn9x seems to be the closest thing to a standard / widely available Chinese panel
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2014-02-25T08:07:03 < Thorn> is there anything like uCurrent + datalogger to help debug low power devices or something?
2014-02-25T08:08:05 < dongs> why not just use ucurrent+datalogger
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2014-02-25T08:38:55 < dongs> Pledge £65 or more
2014-02-25T08:38:55 < dongs> SINGLE OSCAR PCB. This is just the OSCAR PCB on its own WITHOUT the LCD panel. It is fully assembled, tested and ready to be attached to the LCD panel. This comes with no cables or power supply.
2014-02-25T08:38:59 < dongs> haha
2014-02-25T08:39:02 < dongs> still fucking fail
2014-02-25T08:39:13 < dongs> jesus fuck 65gbp is like $110
2014-02-25T08:41:35 < Thorn> why is HDMI a problem?
2014-02-25T08:41:49 < Thorn> "This product is not HDMI compatible" etc.
2014-02-25T08:48:20 < dongs> because they took the $10 way to connect it
2014-02-25T08:48:24 < dongs> instead of $20 way
2014-02-25T08:48:34 < dongs> to maximize profit
2014-02-25T08:48:46 < dongs> god damnit im out of 10k reels
2014-02-25T08:49:22 < tp> dongs, got a descent smt mounter ?
2014-02-25T08:49:26 < dongs> yeah,.
2014-02-25T08:49:45 < tp> I've driven and repaired, Amistar, Dynapert and Yamaha mounters over the years
2014-02-25T08:50:13 < tp> but that was all at least 12 years ago or more
2014-02-25T08:51:38 < tp> in 1997 I was the technical manager for a small SMT asy plant with two large mounters, ir reflow, die and wire bonders and around 80 production staff
2014-02-25T08:51:56 < tp> and the worlds most horrible solder wave abortion
2014-02-25T08:52:14 < tp> it was fun while it lasted tho
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2014-02-25T08:52:57 < tp> we were always fighting to get fresh reels that wernt out of date, same with the solder paste
2014-02-25T08:53:52 < tp> bloody smt is like groceries, they have a expiry date and can be bastards to solder if past that date as I'm sure you'd know
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2014-02-25T09:03:09 < englishman> haha it needs 12V barrel plug
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2014-02-25T09:29:03 < dongs> fucking lol buttcoin
2014-02-25T09:29:10 < dongs> k need to figure out how to get a reel of 10k here by tomrow
2014-02-25T09:29:15 < dongs> or im fucked
2014-02-25T09:33:30 < tp> eeks
2014-02-25T09:33:45 < tp> if you're in the USA should be easy ?
2014-02-25T09:34:06 < dongs> jp. it should be handled.
2014-02-25T09:34:11 < dongs> only gonna end up paying 50 bucks for it
2014-02-25T09:34:21 < tp> I can get stuff from Dallas in 4 days and I'm in Australia
2014-02-25T09:34:40 < tp> hope the roll is 'fresh' :)
2014-02-25T09:35:01 < dongs> fuckin waste
2014-02-25T09:35:10 < dongs> i could get 6 reels for that price
2014-02-25T09:35:23 < tp> haste makes waste
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2014-02-25T10:00:24 < madist> can't you just walk down to Akihabara and pick up a reel from the sidewalk ?
2014-02-25T10:03:47 < madist> I've been to Akihabara once. Amazing market. Insanse stuff you can't find anywhere else, just lying out in the open.
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2014-02-25T10:06:53 < englishman> if you want to walk about 1300km
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2014-02-25T10:45:49 < dongs> madist: you'd be surprised.
2014-02-25T10:45:57 < dongs> I actually went thre looking for 0805 parts once.
2014-02-25T10:46:02 < dongs> nothing but dip shit.
2014-02-25T10:46:05 < dongs> completely worthless.
2014-02-25T10:46:09 < dongs> japan is dead/dying
2014-02-25T10:47:44 < dongs>  < madist> I've been to Akihabara once. Amazing market. Insanse stuff you can't find anywhere else, just lying out in the open.
2014-02-25T10:47:49 < dongs> if you mean used power cords
2014-02-25T10:47:52 < dongs> ancient shit nobody wants
2014-02-25T10:47:54 < madist> lol
2014-02-25T10:48:00 < dongs> overpriced junk you can buy online for half price
2014-02-25T10:48:03 < dongs> then yeah
2014-02-25T10:48:05 < dongs> akihabara is the best
2014-02-25T10:48:11 < madist> I bought magic eye tubes from a brown box in a garage.
2014-02-25T10:48:38 < dongs> i dont even know what that is
2014-02-25T10:48:40 < dongs> so its all good
2014-02-25T10:48:40 < madist> and I bought a radar module from Akizukidenshi. (this was ~10 years ago, when nobody had heard of them)
2014-02-25T10:49:36 < tp> 'magic eye' tubes make a glowing green spot that increases or decreases at the top of the tube, used as a indicator
2014-02-25T10:50:54 < dongs> I bought shit from them 10 yeras ago. it was something worthless i paid way too much for.
2014-02-25T10:51:04 < tp> used in various gear a long time ago, but Ive seen them in use, they look ... retro
2014-02-25T10:51:09 < dongs> truth is, theres nothing useful there.
2014-02-25T10:52:56 < tp> yeah, Id reached the same conclusion after watching some videos of  Akihabara, lots of out of date rolls of SMT, (hard or impossible to solder), pulls from old used gear, maybe a hobbyist mecca, but you'd never risk screwing up a production run with that stuff
2014-02-25T10:53:20 < dongs> i've not seen any smt shit there ever
2014-02-25T10:53:23 < dongs> just ancient crap
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2014-02-25T10:53:38 < tp> and forget hand rework of out of date smt, just takes way too long
2014-02-25T10:53:38 < dongs> like isaid, i was looking for some 0805 stuff to  assemble some shit for a pal and tehre was nothing
2014-02-25T10:54:37 < dongs> was able to find 4k 10K resistors thta should last me until I get more reels in
2014-02-25T10:54:43 < dongs> that should be here tomorw morning
2014-02-25T10:57:01 < tp> hope it turns up
2014-02-25T10:57:29 < tp> I love production, I was always doing that kinda stuff ... in Australia
2014-02-25T10:57:50 < tp> love ... NOT!
2014-02-25T10:57:58 < dongs> i was gonna say.
2014-02-25T10:58:10 < tp> pita!
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2014-02-25T12:32:32 < Thorn> wtf is going on with russian post. EMS package received in HK 5 days ago, arrived to my local office today. it should have taken at least a month
2014-02-25T12:33:56 < zyp> month? EMS is supposed to be fast
2014-02-25T12:35:33 < Thorn> it's certainly supposed to
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2014-02-25T13:39:23 < dongs> dongs dot ru
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2014-02-25T14:08:06 < Thorn> ok wtf
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2014-02-25T14:08:32 < Thorn> seeed sent me my order via Netherlands Post?
2014-02-25T14:08:55 < Thorn> RC***NL
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2014-02-25T15:07:32 < jpa-> Thorn: do you live in netherlands? atleast here in finland the post office assigns a **FI code to untracked packages when they arrive in the office
2014-02-25T15:08:13 < jpa-> makes sense, as my mailbox is too small to fit them and i need some kind of identifier to fetch them
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2014-02-25T15:09:36 < Thorn> no I don't, and the package has just been accepted for delivery, and it's the number that seeed shows (i.e. issued to the sender)
2014-02-25T15:09:48 < jpa-> huh
2014-02-25T15:09:56 < jpa-> well that is funny :)
2014-02-25T15:10:09 < karlp> jpa-: the last two letters of parcels I get re normally the country code of the sender
2014-02-25T15:10:42 < jpa-> karlp: yeah, that's the way it's supposed to work.. but i tend to receive a lot of **FI packages from china
2014-02-25T15:10:51 < karlp> but sometimes IS, perhaps if the seller didn't register properly something?
2014-02-25T15:10:55 < jpa-> apparently NL post is now cheaper than hongkong post ;)
2014-02-25T15:10:55 < Thorn> that is true, e.g. EA***HK = EMS from HK
2014-02-25T15:11:24 < Thorn> how come you can send a package from .cn to .ru via .nl post
2014-02-25T15:12:14 < jpa-> it's the .cn-.nl transearth tunnel
2014-02-25T15:12:39 < Steffanx> sssh, they are not allowed to know about that here.
2014-02-25T15:13:09 < jpa-> they just drop the package and (after dragging along the tunnel wall) it stays in the core of the earth until it melts.. but enough packages get through to fullfill the .cn SLA
2014-02-25T15:14:14 < effractur> lol
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2014-02-25T15:18:01 < Thorn> looks like it's tnt express. english language tracking page redirects to them
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2014-02-25T15:19:29 < Thorn> or maybe not express (for $8)
2014-02-25T15:19:54 < Thorn> (and a standard postal format tracking #)
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2014-02-25T15:29:08 < talsit> dongs: what LA did you have?
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2014-02-25T15:33:10 < dongs> talsit: pokeana
2014-02-25T15:33:22 < dongs> http://www.jds.co.jp/?page_id=107
2014-02-25T15:33:33 < dongs> aka resell of http://www.acute.com.tw/product/la.php
2014-02-25T15:33:47 < dongs> TL2236B / TL2136B
2014-02-25T15:33:51 < talsit> yeah, that one
2014-02-25T15:33:54 < talsit> cheers
2014-02-25T15:36:23 < talsit> hmmm... pricey
2014-02-25T15:37:51 < dongs> quite
2014-02-25T15:37:58 < dongs> maybe you'll be happy wiht the shit R2COM bought
2014-02-25T15:38:02 < dongs> it was only 150-ish
2014-02-25T15:38:09 < dongs> but I forgot what it was
2014-02-25T15:38:18 < talsit> meh, we have money to spend on good tools
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2014-02-25T16:02:17 < Xata> hello
2014-02-25T16:05:57 < nine-tails> welcome
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2014-02-25T16:07:56 < Xata> i've got a problem. i'm making a synth, that generates a sine wave at 48khz sample speed. but this is not  a trouble. trouble is, that when i add an "static volatile float sequence[] = {...}", where in "..." note frequencies are placed, i get a silence. i don't even use it. i just place it in top of my main.c. i suppose it is because it lacks memory, but it is HD f103 with 512k flash memory and 64kb of ram. while whole program is 27kb. it just can be a memory p
2014-02-25T16:08:53 < Xata> *it just _can't_ be a memory problem
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2014-02-25T16:14:15 < nine-tails> is your scope working ?
2014-02-25T16:14:15 < Thorn> does silence mean it hardfaults? what section is that data in? at what address? is it copied into sram at startup? how many elements in the array? why floats in a f103?
2014-02-25T16:16:04 < Xata> nine-tails: like i have one :C I am just some poor enthusiast, so no scope, no jtag, just miniSTM32, PC and CooCox IDE
2014-02-25T16:16:33 < effractur> mm and can you check with your debugger if the code is even executed?
2014-02-25T16:18:50 < dongs> ya first step when shit doesnt work, run in debugger
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2014-02-25T16:20:11 < Xata> Thorn: Silence means i only hear some very high-freq digital noise, like 2-3 samples. It is common on any DAC output when it has nothing to output. That data is in idk section. i just declared it on top of my C file. How do i check it? gdb? 32 floats in array, floats are for frequency preciseness. but there is also another array with 10k samples (that's the sinewave table)
2014-02-25T16:20:40 < Xata> effractur: dongs gdb debugger ot jtag on hardware? i don't have last one though.
2014-02-25T16:21:22 < effractur> no swd?
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2014-02-25T16:21:52 < Thorn> what, not even a discovery board with onboard st-link?
2014-02-25T16:21:53 < dongs> you need to upgrade.
2014-02-25T16:22:01 < dongs> flashing and printf is for arduino crowd
2014-02-25T16:23:07 < Xata> effractur: maybe i can make one? Is it complex?
2014-02-25T16:23:31 < Xata> Thorn: ministm. i have jtag connector, but no st-link itself
2014-02-25T16:24:56 < Thorn> to see where you array is, use objdump / readelf on your compiled image.
2014-02-25T16:25:11 < Xata> dongs: well, looks like i have to get some debugger...
2014-02-25T16:25:36 < effractur> just buy the new stm thingys those are 11 dollars
2014-02-25T16:25:38 < effractur> with stlink
2014-02-25T16:25:56 < Thorn> you can start by turning on a led in the hardfault handler
2014-02-25T16:26:01 < effractur> the Nucleo
2014-02-25T16:27:11 < Xata> effractur: but i need hd-device with dac, and local smuglers will want 30$+
2014-02-25T16:27:44 < effractur> well i know, but you use the st-link as debugger for your current microcontroller
2014-02-25T16:28:07 < Thorn> what you actually want for audio is an I2S codec, several discovery boards have those
2014-02-25T16:32:22 < Xata> Thorn: i'll try hardfault thingy. thanks. Also i see i need hardware to continue.
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2014-02-25T16:32:54 < Xata> thanks everyone. now i'm sure i need st-link, at least a clone.
2014-02-25T16:33:08 < Thorn> don't forget about the objdump thingy and the readelf thingy
2014-02-25T16:34:35 < karlp> the real stlink is as cheap as a clone
2014-02-25T16:34:47 < karlp> unless you really like the casing of one of the clones
2014-02-25T16:34:58 < karlp> cloneing stlink has got to be pretty marginal business
2014-02-25T16:35:01 < Xata> karlp: here they are 50$
2014-02-25T16:35:22 < karlp> I don't mean the boxed up standalone sltink, I mean the stlinks on the discovery boards
2014-02-25T16:35:26 < Xata> clones are from 15$
2014-02-25T16:36:14 < karlp> where is here now?
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2014-02-25T16:36:35 < Xata> ukraine
2014-02-25T16:37:42 < karlp> so I can find clones on aliexpress for ~$7, and real deals for ~15 http://www.aliexpress.com/item/Free-shiping-1pcs-lot-STM32F0-discovery-STM32F051-development-board-to-send-data-integration-ST-LINK-V2/1125213057.html
2014-02-25T16:38:06 < karlp> so yeah, sorry, clones are cheaper, by an amount I wouldn't bother even risking
2014-02-25T16:39:00 < Thorn> Xata: http://www.e-voron.dp.ua/catalog/021767 or something like that
2014-02-25T16:40:01 < Xata> Thorn: that's almost 45 bucks
2014-02-25T16:40:21 < karlp> got a lot more on it than a stlink though :)
2014-02-25T16:40:32 < Xata> f4 on the other hand
2014-02-25T16:40:41 < Xata> yay floating-point
2014-02-25T16:40:46 < Thorn> stlinkv2, i2s codec
2014-02-25T16:40:53 < karlp> anywya, your money, but get a debugger of some sort
2014-02-25T16:41:36 < karlp> heh, the $6 clone stlink on aliexpress wants to charge $55 shipping
2014-02-25T16:42:45 < Xata> http://www.e-voron.dp.ua/catalog/020921 hm, 14$
2014-02-25T16:44:03 < Thorn> some non-standard connectors
2014-02-25T16:44:03 < karlp> I wonder if the clones have SWO support?
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2014-02-25T17:30:08 < dongs> https://www.kickstarter.com/projects/1883701526/matchboxarm/comments
2014-02-25T17:30:11 < dongs> sup
2014-02-25T17:30:33 < dongs> For those of you wanting to get on with some development while waiting for your MatchboxARM, there are some almost equivalent boards available on ebay from China. They're a bit bigger and not so pretty, but they use the same processor and have all the IO pins available. Search on ebay for "ARM Cortex-M3 STM32F103C8T6 STM32 Minimum System Development Board". They cost from around £6.50 delivered and mine took 3 weeks even though Chinese New Year was in between.
2014-02-25T17:30:39 < dongs> If you don't have a USB/RS232 TTL level lead, then order one of those too...
2014-02-25T17:30:42 < dongs> haha
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2014-02-25T17:41:58 < Laurenceb> trooolllssss
2014-02-25T17:48:29 -!- vadmeste [~vadmeste@41.224.36.130] has joined ##stm32
2014-02-25T17:49:13 < vadmeste> Hello everybody. Is there any method to count SDRAM accesses (read/write) ?
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2014-02-25T17:53:02 < Claude> vadmeste, scope on the rw line ?
2014-02-25T17:56:13 < vadmeste> Claude: thanks for responding :) what about counting by software ?
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2014-02-25T18:03:54 < Thorn> vadmeste: wire another stm32 to that line, configure EXTI, count in software
2014-02-25T18:05:20 < Claude> vadmeste, sorry don't know how to do that in sw
2014-02-25T18:05:59 < Claude> or maybe as Thorn suggested use a EXTI line , maybe even from the same stm32 ? ;)
2014-02-25T18:06:17 < Claude> or a counter unit
2014-02-25T18:07:27 < Thorn> if the EXTI handler itself accesses the SDRAM you'll have an infinite interrupt storm lol
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2014-02-25T18:08:14 < Thorn> counting with a timer would probably be best
2014-02-25T18:15:15 < vadmeste> Thorn: Would I still need the wiring stuff if I'll use the timer ?
2014-02-25T18:15:17 < Claude> vadmeste, how about the FMC_SDSR reg ? polling on the busy bit and masking with the refresh bits?
2014-02-25T18:17:14 < Thorn> vadmeste: yes you'll need to connect the line you want to a timer pin
2014-02-25T18:21:12 < Claude> when you poll FMC_SDSR also take the sdram burst length in account
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2014-02-25T18:27:26 < vadmeste> claude: I think polling is not a good idea for me because it will consume all CPU resource, am I wrong ?
2014-02-25T18:28:28 < dongs> https://pbs.twimg.com/media/BhUp4JxCIAAdBlN.jpg wat
2014-02-25T18:28:38 < dongs> vadmeste: just fucking tie it to any free timer channel
2014-02-25T18:28:41 < dongs> and set it up to count. done
2014-02-25T18:28:45 < dongs> input capture or whatever
2014-02-25T18:28:59 < dongs> you can even use another timer channel and do master/slave stuff to auto-reset it on whatevfer condition
2014-02-25T18:30:56 < dongs> http://static.rcgroups.net/forums/attachments/2/6/2/4/4/6/a5527928-30-RX_5808_band%20selection%20pins.jpg?d=1360587406 haha china using RT9193
2014-02-25T18:31:00 < dongs> for 3.3V
2014-02-25T18:36:07 < Thorn> lol why not ddr2 http://i01.i.aliimg.com/wsphoto/v0/615597683/H57V2562GTR-font-b-SDRAM-b-font-Board-Synchronous-DRAM-Memory-16Mx16bit-Evaluation-Development-Module.jpg
2014-02-25T18:36:29 < nine-tails> why isnt coocox available on lunix !
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2014-02-25T18:46:46 < Laurenceb> hackaday.com/2014/02/25/nxps-arm-micros-with-motor-controllers/
2014-02-25T18:46:51 < Laurenceb> why is this news
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2014-02-25T19:15:24 < Steffanx> You can also care too much Laurenceb
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2014-02-25T19:37:00 < beaky> hello
2014-02-25T19:39:25 < beaky> why is my spi leaving 8 zeroes after my data
2014-02-25T19:39:30 < beaky> even though i have set it to 8-bit mode
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2014-02-25T20:13:46 < zyp> because you're using F3
2014-02-25T20:15:43 < beaky> :(
2014-02-25T20:15:46 < beaky> whats wrong with f
2014-02-25T20:15:47 < beaky> f3
2014-02-25T20:20:05 < Steffanx> you probably have to take a look at SPI_SendData8 of the peripheral lib.
2014-02-25T20:20:28 < beaky> right
2014-02-25T20:22:32 < beaky> all it does it load the data into SPIx->DR
2014-02-25T20:22:50 < beaky> doesn't even assert RXE or TX or BUSY
2014-02-25T20:25:04 < Steffanx> beaky, read http://xob.kapsi.fi/~jpa/stm32/2013-04.log start from: 2013-04-01T00:49:26
2014-02-25T20:25:20 < emeb> hint: what data type does SPI_SendData8 use to access the DR register?
2014-02-25T20:25:21 < beaky> http://ideone.com/cn8CKi here is my firmware
2014-02-25T20:25:24 < Steffanx> im not sure if F3 has the same spi peripheral as f0, but .. it is probably it.
2014-02-25T20:26:15 < beaky> wow i remember that  upgrdman dude
2014-02-25T20:26:31 < Steffanx> that "dude" is here sometimes .....
2014-02-25T20:27:05 < beaky> so he has the same problems as I do? glad im not alone in this world
2014-02-25T20:27:36 < beaky> "<jpa-> send two bytes at a time" yeah 16-bit mode works perfectly :D
2014-02-25T20:28:21  * beaky reads stm32f3 errata
2014-02-25T20:28:30 < Steffanx> no. not the errata.
2014-02-25T20:28:58 < Steffanx> have a look at SPI_SendData8 and SPI_SendData .. see the difference.
2014-02-25T20:29:04 < Steffanx> and: <emeb> hint: what data type does SPI_SendData8 use to access the DR register?
2014-02-25T20:29:25 < beaky> oh
2014-02-25T20:29:26 < Steffanx> and https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=%2Fpublic%2FSTe2ecommunities%2Fmcu%2FLists%2Fcortex_mx_stm32%2Fpure%208-Bit%20SPI%20communication&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=99
2014-02-25T20:29:28 < Steffanx> need more?
2014-02-25T20:30:04 < beaky> ah it amkes sense now
2014-02-25T20:30:06 < beaky> tahnks :D
2014-02-25T20:30:07 < Steffanx> "but I get 4 times 16 Bit out with the high byte always being 0x00." sounds familiar uh?
2014-02-25T20:30:16 < zyp> I also had that problem
2014-02-25T20:30:18 < zyp> on F3
2014-02-25T20:30:42 < zyp> when you write more than 8 bits into DR, it gets interpreted as you want to write two words
2014-02-25T20:30:56 < beaky> so it automatically does framing
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2014-02-25T20:31:18 < beaky> and because of the way the CMSIS defines it, it will end up sending those extra leading zeroes
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2014-02-25T20:33:30 < beaky> i love stm32f3 it is the ultimate microcontroller now that my smps is done im going to order an stm32f4 disco and make a quadcopter with it
2014-02-25T20:33:59 < Steffanx> like your f3 cant do that.
2014-02-25T20:34:36 < nine-tails> its the best if you buy the quadcopter
2014-02-25T20:35:06 < Steffanx> its even better when nine-tails changes his nick back to ranewen :P
2014-02-25T20:35:11 < beaky> right i have zero machining skills
2014-02-25T20:35:25 < Steffanx> or is nine-tails not ranewen?
2014-02-25T20:35:27 < Steffanx> hmm
2014-02-25T20:35:27 < nine-tails> so one more reason why you should reconsider a new quad
2014-02-25T20:36:06 < nine-tails> and when you create a quad, you have to pay attention to so much detalks
2014-02-25T20:36:30 < beaky> im new to quadcopters
2014-02-25T20:36:54 < beaky> but stm32f4 has a gyroscope in it so that might be good for quadcopter
2014-02-25T20:37:02 < nine-tails> no it doesnt
2014-02-25T20:37:47 < beaky> also a class D amplifier so i can put a speaker on my quadcopter :D
2014-02-25T20:38:01 < nine-tails> you mean the disco board ?
2014-02-25T20:38:07 < beaky> yes
2014-02-25T20:38:14 < beaky> stm32f4 disco*
2014-02-25T20:38:18  * nine-tails backs out
2014-02-25T20:38:24 < beaky> i think the stm32f3 has a compass on it as well
2014-02-25T20:38:28 < beaky> stm32f3 disco*
2014-02-25T20:38:48 < beaky> stm32f3 is awesome it has comparators and opamps so it can be good for thigns like mobile analog sensing
2014-02-25T20:38:55 < nine-tails> you are lucky dongie ignored you..
2014-02-25T20:39:07 < beaky> you mean dongs? why am i lucky
2014-02-25T20:41:46 < nine-tails> i made a picture.. so you can understand
2014-02-25T20:41:49 < nine-tails> http://blog.tkjelectronics.dk/wp-content/uploads/STM32F4-DISCOVERY_BoardContent.jpg
2014-02-25T20:41:51 < nine-tails> no gyro there
2014-02-25T20:44:34 < madist> nine-tails: your picture doesn't show the other side of the board
2014-02-25T20:44:42 < madist> how do i know there's no gyro there ?
2014-02-25T20:45:06 < Steffanx> x-ray eyes.
2014-02-25T20:45:20 < nine-tails> madist: Flip the board
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2014-02-25T20:45:37 < nine-tails> madist: oh perhaps you thought its in the pcb ?
2014-02-25T20:45:49 < madist> nine-tails <- phail
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2014-02-25T23:50:14 < beaky> http://ideone.com/c52ZUM how do i improve my code
2014-02-25T23:50:41 < karlp> whiskey
2014-02-25T23:51:30 < karlp> or, explain what you don't like, and want to improve
2014-02-25T23:52:01 < beaky> i dont like... everything. I want to improve everything :D
2014-02-25T23:53:13 < beaky> the whole setup process is not very self-documenting, for example
2014-02-25T23:53:34 < beaky> also the lack of DMA for getting ADC readings and updating the LCD efficiently
2014-02-25T23:55:12 < beaky> btw how do i do satmath in stm32f3
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2014-02-26T00:45:41 < gnomad> beaky: Any time I am doing register configs, I *always* comment what is going on.
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2014-02-26T01:53:33 < ds2> is the L series the one with the best accuracy of the internal oscillators?
2014-02-26T01:57:20 < dongs> no
2014-02-26T01:57:21 < karlp> not sure I've ever read about any of them claiming to be better than any others
2014-02-26T01:57:25 < dongs> thats the new F020 or wahtever
2014-02-26T01:57:29 < karlp> L just has _more_ internal oscillators
2014-02-26T01:57:30 < dongs> good enough for USB
2014-02-26T01:57:38 < karlp> well, f0x2 and the usb one, yeah :)
2014-02-26T02:01:05 < ds2> F0x2 devices? 'k will look at them
2014-02-26T02:01:30 < karlp> those are the new crystalless usb ones
2014-02-26T02:02:17 < ds2> TSSOP20 package?! wow
2014-02-26T02:03:01 < ds2> hmmm the small ones are all preview
2014-02-26T02:04:24 < karlp> what are you hoping to do?
2014-02-26T02:04:33 < karlp> (you'll have to have usb connected if you want that special clock)
2014-02-26T02:05:01 < ds2> trying to do a data acquisition in a small package...timing matters
2014-02-26T02:05:07 < ds2> but I need 2 I2C ports
2014-02-26T02:05:10 < ds2> so F0x2 is out
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2014-02-26T02:36:01 < Jack3k3> has anyone here ever used the UDA1380 audio codec chip?
2014-02-26T02:52:02 < Jack3k3> or any i2c controlled audio codec chip, but i'm trying to understand how they communicate and i'm pretty lost
2014-02-26T02:52:48 < Jack3k3> like for running both the ADC and DAC at the same time, so the microcontroller is sending audio to be played and also receiving audio from the input on the chip, are their predefined periods for when each of these communications happens
2014-02-26T02:53:08 < Jack3k3> i've tried going thru the datasheet but im kinda lost
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2014-02-26T04:01:56 < Thorn> Jack3k3: you will need 2 data lines (MISO and MOSI)
2014-02-26T04:06:30 < Jack3k3> hm
2014-02-26T04:07:30 < Jack3k3> actually, this is a lot to ask but could someone take a look at this source example https://github.com/jack3k3/User
2014-02-26T04:07:50 < Thorn> IIRC STM32F4 has a full duplex I2S interface
2014-02-26T04:08:12 < Jack3k3> yeah i believe it does
2014-02-26T04:08:34 < Jack3k3> the interesting part is probably here https://github.com/jack3k3/User/blob/master/UDA1380/I2S.c the function Audio_MAL_IRQHandler
2014-02-26T04:09:29 < Jack3k3> I *think* this is triggered when the I2S has received an acknowledgement response to OK the sending of more wave data but im not really sure
2014-02-26T04:20:23 < Jack3k3> so im guessing no one is going to look at that github since theres a lot of files to sift thru... but if anyone wants to help I could pay for your time, PM me
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2014-02-26T04:24:37 < GargantuaSauce_> we are all entirely perturbed by your MALeficent code
2014-02-26T04:24:39  * GargantuaSauce_ sees himself out
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2014-02-26T04:27:03 < Jack3k3> heh
2014-02-26T04:27:19 < zyp> are you running the I2S interface as master or slave?
2014-02-26T04:28:08 < Jack3k3> to be fair I didn't write the code, just trying to understand it enought modify it..
2014-02-26T04:28:14 < Jack3k3> zyp: Master I think?   I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx;
2014-02-26T04:28:26 < zyp> ok
2014-02-26T04:29:01 < zyp> http://cgit.jvnv.net/laks_demo/tree/main.cpp <- if you want a simpler example and don't care about stdperiphlib, you could look at this
2014-02-26T04:29:28 < zyp> ignore all the usb stuff, that's probably not interesting to you
2014-02-26T04:29:46 < zyp> that code sets up the f4 discovery as a usb soundcard
2014-02-26T04:34:15 < Jack3k3> so I seee its using I2C to control the DAC which makes sense, but im not seeing where the i2s is used to transfer the audio
2014-02-26T04:37:12 < zyp> ah, right
2014-02-26T04:37:24 < zyp> I'm just setting up a continous DMA from a circular buffer
2014-02-26T04:38:00 < zyp> sorry, that code would probably not help you then, I'm not handling sync at all
2014-02-26T04:41:48 < Jack3k3> ah no problem, thanks though
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2014-02-26T06:34:14 < NULL___> during baudrate config in UART we give 9600 directly to (USART_InitStructure.USART_BaudRate=9600), usually baud rate is implemented based on the clock speed, where this clock and baud is calculated and configured?
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2014-02-26T06:35:01 < dongs> http://i.imgur.com/U7Ldy72.jpg hah, jap did a good job on this install http://i.imgur.com/U7Ldy72.jpg
2014-02-26T06:35:11 < dongs> er 2nd url http://i.imgur.com/ciscrGD.jpg
2014-02-26T06:35:22 < dongs> http://i.imgur.com/KGZMtgJ.jpg
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2014-02-26T06:36:32 < gxti> NULL___: stdperiph has functions that calculate the clock frequency. if you're using HSE (crystal or external clock) you have to set HSE_FREQ to tell it what it is.
2014-02-26T06:37:18 < gxti> but from there it will work out PLL, dividers, etc. based on the actual configuration
2014-02-26T06:42:57 < NULL___> gxti: ie should we configure the clock accordingly based on our baud rate config of uart. clock config are given in stm32l1xx_rcc.c
2014-02-26T06:52:44 < PaulFertser> NULL___: your last question is unparseable.
2014-02-26T06:56:43 < dongs> gxti: HSE_VALUE
2014-02-26T06:56:52 < dongs> byt yeha
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2014-02-26T06:58:28 < NULL___> what i meant is that while configuring baud rate usually we consider the clock speed and then calculate and config it. so in stm32's by using CMSIS lib we just set the value (USART_InitStructure.USART_BaudRate=9600)
2014-02-26T06:59:31 < NULL___> where can we find the baud rate dependency on clock speed?
2014-02-26T07:00:25 < gxti> well if you had to guess, wouldn't you look at the function that you're calling to configure the uart? maybe it knows something
2014-02-26T07:01:08 < dongs> dude jsut look in stm32_usart.c
2014-02-26T07:01:14 < dongs> in USART_INit or whatever
2014-02-26T07:01:16 < dongs> it uses hse_value
2014-02-26T07:01:23 < dongs> or rcc->Sysclock or someshti
2014-02-26T07:02:11 < dongs> sores for all this shit is avialble so just like,, read them
2014-02-26T07:03:13 < dongs> if  you need commercial support, /msg emeb or emeb_mac, his rates per hour are resonable
2014-02-26T07:03:25 < emeb_mac> lol
2014-02-26T07:04:29  * emeb_mac wonders what he ever did to dongs to deserve that
2014-02-26T07:04:47 < dongs> wat, you dont wanna get paid for fixing someons shit? :)
2014-02-26T07:05:02 < dongs> emeb_mac: is i2s peripheral "fullduplex"?
2014-02-26T07:05:06 < dongs> ie can you send/receive at same time/
2014-02-26T07:05:09 < dongs> or do you need to buffer or wat
2014-02-26T07:05:21 < dongs> how do you deal with a codec that has both adc and dac
2014-02-26T07:05:27 < dongs> or do you need to conenct it to 2 separate i2s
2014-02-26T07:05:31 < emeb_mac> dongs: depends on which STM32Fx architecture you're talking
2014-02-26T07:05:37 < dongs> F4
2014-02-26T07:05:54 < emeb_mac> on F4 there is an I2Sx_ext channel that makes it full duplex
2014-02-26T07:06:06 < dongs> is wiring still same?
2014-02-26T07:06:24 < emeb_mac> yeah - just another GPIO bit for the other half
2014-02-26T07:06:38 < emeb_mac> same MCLK, WS, SCLK tho
2014-02-26T07:07:02 < dongs> how does one usually interface with a codec that way then
2014-02-26T07:07:07 < dongs> are they usually half duplex?
2014-02-26T07:07:09 < dongs> only in and only out?
2014-02-26T07:07:19 < dongs> (i mean w/o this extra thing)
2014-02-26T07:07:28 < dongs> like that UDAwhatever shit I linked a few days ago
2014-02-26T07:07:31 < emeb_mac> most codecs (true codecs) have both SDin and SDout
2014-02-26T07:08:07 < emeb_mac> so you just hook those to the I2S data lines and set up the TX / RX directions appropriately
2014-02-26T07:08:41 < dongs> so you use 2 i2s peripherals?
2014-02-26T07:09:04 < emeb_mac> no, just one with the _ext enabled
2014-02-26T07:09:24 < emeb_mac> example code for an F405 here: http://ebrombaugh.studionebula.com/synth/stm32f4_codec/f405_i2s_delay.zip
2014-02-26T07:10:08 < dongs> AUDIO_I2S_EXT_DMA_CHANNEL this shit?
2014-02-26T07:10:42 < dongs> i shoudl probly just shute up and look at schematic
2014-02-26T07:11:04 < emeb_mac> yeah - that's part of it
2014-02-26T07:11:43 < Thorn> what is this MCLK anyway and when do you need it
2014-02-26T07:11:59 < dongs> emeb_mac: oh, i see. so its 2 separate pins
2014-02-26T07:12:06 < dongs> I2S_SD and I2Sext_SD
2014-02-26T07:12:08 < Thorn> is it to clock the codec?
2014-02-26T07:12:10 < emeb_mac> dongs: yep
2014-02-26T07:12:20 < emeb_mac> Thorn: yes - processor can supply that
2014-02-26T07:12:21 < dongs> hokay. and you can configure either one as in or out?
2014-02-26T07:12:37 < emeb_mac> on the F4 they always run in opposite directions
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2014-02-26T07:13:05 < emeb_mac> so if main is out, _ext is in & vice versa
2014-02-26T07:13:25 < Thorn> so if the codec has its own xtal, you don't need to route MCLK?
2014-02-26T07:14:03 < emeb_mac> Thorn: that can be difficult if the codec clock isn't synchronous with the processor clock
2014-02-26T07:14:33 < emeb_mac> if the codec has its own xtal then the STM32 I2S port needs to run in slave mode
2014-02-26T07:14:40 < emeb_mac> so it stays in sync with the codec
2014-02-26T07:14:51 < Thorn> and the codec will supply MCLK to the I2S core?
2014-02-26T07:15:02 < emeb_mac> no, then MCLK isn't needed
2014-02-26T07:15:23 < emeb_mac> the codec supplies bit clock and word select to the I2S core
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2014-02-26T07:16:57 < dongs> Jack3k3: o hai
2014-02-26T07:17:04 < Jack3k3> hello lol
2014-02-26T07:17:18 < dongs> emeb_mac: ^ this guy will be bothering the shit out of you about codecs from now on
2014-02-26T07:17:20 < Thorn> I think I've seen a schematics where the stm32 i2s core receives mclk from a codec somewhere
2014-02-26T07:17:53 < emeb_mac> dongs: thanks!
2014-02-26T07:18:14 < Thorn> and some guy couldn't get a codec work with a fpga in slave mode but master mode worked
2014-02-26T07:18:14 < emeb_mac> Thorn: I'd be interested in seeing that. AFAIK MCLK is output only
2014-02-26T07:18:34 < Jack3k3> haha i promise to bother dongs first if that makes you feel better
2014-02-26T07:18:50 < emeb_mac> Jack3k3: np - just trolling
2014-02-26T07:20:11 < Thorn> oh well maybe I'm talking crap. last slide here http://www.eng.auburn.edu/~nelson/courses/elec5260_6260/Inter-IC%20Sound%20(I2S)%20Bus2.pdf
2014-02-26T07:20:26 < Thorn> looks like they only show an output buffer on MCLK
2014-02-26T07:20:42 < Thorn> input is not connected
2014-02-26T07:22:08 < emeb_mac> right - that's what I remember
2014-02-26T07:24:41 < emeb_mac> wonder how bvernoux's airspy thing is coming along...
2014-02-26T07:25:09 < dongs> heh
2014-02-26T07:25:13 < dongs> newbing around
2014-02-26T07:25:28 < Thorn> "MCK: Master Clock (mapped separately) is used, when the I2S is configured in master mode ... to output this additional clock generated at a preconfigured frequency rate equal to 256 × FS"
2014-02-26T07:26:21 < emeb_mac> yup
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2014-02-26T07:27:00 < Thorn> Master clock (MCK) may be output or not, thanks to the MCKOE bit
2014-02-26T07:27:13 < Thorn> thanks MCKOE bit \o/
2014-02-26T07:27:36 < ds2> get a manchester encoding codec ;)
2014-02-26T07:28:48 < emeb_mac> but wtf are you going to do if it's an input? There's nothing that is driven by it
2014-02-26T07:30:12 < emeb_mac> and there's really no need for it to drive the STM32 I2S logic - MCLK is there to set the sample rate of the Sigma/Delta converters in the codec
2014-02-26T07:30:28 < emeb_mac> the I2S port in the STM32 doesn't have to run faster than the bit rate.
2014-02-26T07:31:35 < Thorn> why can't the codec drive its adc using a PLL synced to the bit clock?
2014-02-26T07:31:50 < Thorn> i.e. why is MCLK needed at all
2014-02-26T07:32:06 < Thorn> also WM8731 can generate MCLK (why? for another codec?)
2014-02-26T07:32:34 < ds2> options if you want slaves
2014-02-26T07:32:51 < ds2> apparently sync'ed streams are useful for the alg folks
2014-02-26T07:34:24 < Thorn> but why can't they sync with the bit clock
2014-02-26T07:35:27 < dongs> cuz you get jitter
2014-02-26T07:35:35 < dongs> and your soundstage will shrivel
2014-02-26T07:35:55 < dongs> highs wont be as high, and mids will be mediocre
2014-02-26T07:37:46 < emeb_mac> some codecs do have built-in PLLs
2014-02-26T07:37:50 < emeb_mac> but they cost extra
2014-02-26T07:38:13 < emeb_mac> check out some of the TI TLV320AIC parts
2014-02-26T07:38:44 < emeb_mac> cheap ones like WM8731 and CS4270 don't have PLLs and need MCLK or xtal
2014-02-26T07:45:26 < madist> Wolfson DACs are cheap ??
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2014-02-26T07:57:16 < emeb_mac> uh, ya
2014-02-26T07:57:39 < emeb_mac> < $3 in qty for a stereo codec w/ headphone driver.
2014-02-26T07:58:27 < madist> i thought they were the audiophile grade guys
2014-02-26T07:59:04 < madist> there are $50,000 CD players that advertise they have a Wolfson DAC inside.
2014-02-26T07:59:23 < dongs> jitter-free transport
2014-02-26T08:02:38 < emeb_mac> Wolfson makes a broad line of devices - some cheap, some high-end.
2014-02-26T08:03:05 < dongs> why the hell do you even need a dac in a cd player
2014-02-26T08:03:09 < dongs> sounds like scam
2014-02-26T08:03:16 < dongs> you just feed digital from CD directly into digital speakers
2014-02-26T08:03:47 < kuldeepdhaka> afair, my mp4 has wolfson DAC :)
2014-02-26T08:05:07 < emeb_mac> you need a DAC in a CD player - how else you going to get analog audio from bits on the CD?
2014-02-26T08:05:56 < englishman> cd player chats in ##stm32
2014-02-26T08:05:59 < englishman> what year is this
2014-02-26T08:07:02 < dongs> $50000 cd player chats
2014-02-26T08:07:05 < dongs> there's a difference
2014-02-26T08:07:25 < dongs> you only need to sell one to make a profit
2014-02-26T08:08:09 < kuldeepdhaka> englishman, 2104
2014-02-26T08:15:48 < madist> Its 2014! Why is my speaker still Analog ?
2014-02-26T08:18:52 < upgrdman> madist: iirc digital speakers have been done. but not practical
2014-02-26T08:19:07 < upgrdman> concentric voicecoils/cones
2014-02-26T08:19:57 < Thorn> each has twice the area of the previous one or something?
2014-02-26T08:20:12 < upgrdman> http://en.wikipedia.org/wiki/Digital_speakers
2014-02-26T08:20:14 < Thorn> emeb_mac: thanks for the info
2014-02-26T08:20:48 < emeb_mac> Thorn: np
2014-02-26T08:21:00 < Jack3k3> http://www.clarion.com/jp/en/tech/technology/fdspeaker/index.html
2014-02-26T08:21:11 < Jack3k3> tha future
2014-02-26T08:21:40 < Thorn>  World’s First Full-Digital Speakers for Cats
2014-02-26T08:22:09 < Jack3k3> lol
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2014-02-26T08:31:48 < englishman> can't even remember the last time i saw a cd
2014-02-26T08:32:22 < dongs> stoned
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2014-02-26T08:36:32  * emeb_mac is old - has a shelf full of 'em
2014-02-26T08:40:21 < englishman> http://www.youtube.com/watch?v=n5LEEoskiaM
2014-02-26T08:41:26 < englishman> dongs:
2014-02-26T08:42:16 < dongs> what the actual fuck
2014-02-26T08:43:19 < Thorn> "please die (imaginnaly)"
2014-02-26T08:44:26 < englishman> i wish all electronics, etc vids were edited like this
2014-02-26T08:44:41 < englishman> must be what it's like to live in japan
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2014-02-26T09:37:21 < claude> lol on that digital speaker thing , an pdf explaining how it works : http://www.trigence.co.jp//Technology/?action=common_download_main&upload_id=83
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2014-02-26T11:34:04 < dongs> http://yasep.org/ fail
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2014-02-26T11:38:07 < kuldeepdhaka> Claude, dont know the language used in pdf use (probably Chinese) :(
2014-02-26T11:38:19 < dongs> obviously japanese
2014-02-26T11:39:17 < kuldeepdhaka> everything look same to me :p
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2014-02-26T14:03:29 < Steffanx> dongs comics in japan always like that? I guess you have to read the text from bottom to top / column?
2014-02-26T14:03:45 < Steffanx> *are comics
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2014-02-26T14:12:50 < zyp> Steffanx, like what?
2014-02-26T14:13:21 < zyp> ah, that pdf
2014-02-26T14:13:28 < Steffanx> like in that pdf claude posted.. it seems the text is written in columns
2014-02-26T14:14:17 < zyp> yes, you start at the top and read downwards
2014-02-26T14:14:58 < zyp> first line is rightmost, so it's like you take normal oriented text and rotate it 90 degrees clockwise (except the letters are not rotated)
2014-02-26T14:15:11 < Steffanx> heh, ok :)
2014-02-26T14:17:38 < nine-tails> Steffanx: can i master it ?
2014-02-26T14:17:53 < Steffanx> Can you master what?
2014-02-26T14:18:21 < nine-tails> Steffanx: that japanese comics
2014-02-26T14:19:00 < Steffanx> try it.
2014-02-26T14:19:15 < nine-tails> i dont know japaneese... how would i find a japaneese comic
2014-02-26T14:20:10 < nine-tails> but after all.. i might use google... the last thing i need is to open your links Steffanx
2014-02-26T14:20:23 < nine-tails> and a giant nsfw pops op
2014-02-26T14:21:02 < Steffanx> uh what? It wasn't my pdf.
2014-02-26T14:21:16 < Steffanx> and i've never ever posted things like that.
2014-02-26T14:21:35 < nine-tails> knowing your true nature..
2014-02-26T14:21:42 < zyp> Steffanx, that explanation looks like a load of bullshit
2014-02-26T14:22:20 < zyp> nine-tails, you must be confusing Steffanx with Laurenceb
2014-02-26T14:22:38 < nine-tails> zyp: oh right
2014-02-26T14:22:48 < nine-tails> zyp: i dont spend my life here,, how would i know
2014-02-26T14:22:51 < Steffanx> Are you still only here for the trollink nine-tails?
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2014-02-26T14:24:36 < Laurenceb> nine-tails: http://spatulatzar.com/cat5/
2014-02-26T14:26:12 < nine-tails> Laurenceb: nice website you got
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2014-02-26T15:06:11 < nine-tails> "... and it NEEDS TO BE RELIABLE. To build the system, [Patrick] has chosen an Arduino Duemillenova, an RTC, a small LCD screen, some cheap LEDs from eBay and a handful of N-channel NPN transistors ..."
2014-02-26T15:06:36 < qyx_> uhm
2014-02-26T15:06:42 < Thorn> N-channel NPN transistors and junction Schottky diodes
2014-02-26T15:07:08 < nine-tails> hackaday staff is very ..
2014-02-26T15:08:24 < Thorn> The WM8731/L architecture is less susceptible than most converter techniques but still requires clocks with less than approximately 1ns of jitter to maintain performance.
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2014-02-26T15:20:35 < beaky> hello
2014-02-26T15:20:51 < beaky> how do i efficiently schedule processes on stm32?
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2014-02-26T16:10:49 < beaky> why is APB1 limited to 36MHz over 72MHz
2014-02-26T16:10:57 < beaky> while APB2 and AHB are unlimited
2014-02-26T16:11:52 < zyp> because the peripherals on APB1 can't run faster
2014-02-26T16:12:05 < beaky> oh
2014-02-26T16:12:32 < zyp> slow peripherals are put on APB1 while faster peripherals are put on APB2 and AHB
2014-02-26T16:13:00 < beaky> is it possible to clock stm32f3 above 72MHz
2014-02-26T16:13:05 < beaky> e.g. to 204MHz
2014-02-26T16:13:36 < zyp> sure, just increase the multiplier
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2014-02-26T16:16:14 < beaky> seems max is 72MHz :(
2014-02-26T16:17:34 < beaky> oh wait it seems i CAN safely overclock it to ~200MHz?
2014-02-26T16:17:47 < zyp> no, of course not
2014-02-26T16:17:53 < beaky> :(
2014-02-26T16:18:03 < zyp> the maximum frequency you can safely run as per spec is 72 MHz
2014-02-26T16:18:27 < beaky> so if i overclock too hgh i get IRQ_HARDFAULT
2014-02-26T16:20:10 < beaky> what do i do if i need >72MHz opeation
2014-02-26T16:20:28 < zyp> then you get something different.
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2014-02-26T16:23:51 < GargantuaSauce> liquid nitrogen overclocked f3, go
2014-02-26T16:24:23 < Laurenceb> http://www.youtube.com/watch?v=-U-cc_Qcf-w
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2014-02-26T16:28:26 < Laurenceb> http://www.newgrounds.com/portal/view/242972
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2014-02-26T16:29:55 < beaky> what is the best rtos for stm32
2014-02-26T16:36:21 < madist> beaky: Windows 8.1
2014-02-26T16:37:32 < beaky> windows? seriously?
2014-02-26T16:38:04 < Laurenceb> trolld
2014-02-26T16:39:35 < beaky> but an rtos will help make a complicated project simpler
2014-02-26T16:39:52 < beaky> plus i bet the rtos guys have better scheduler than anything i will ever come up with
2014-02-26T16:40:54 < Rickta59> in case you were wondering how to get openocd to work with the new nucleo boards: http://fabooh.com/2014/02/25/openocd-meets-a-nucleo-f030r8-board/
2014-02-26T16:41:23 < beaky> what does nucleo have going for it over the disco boards?
2014-02-26T16:42:01 < Rickta59> built in serial port, mass storage firmware loader, cut away for the stlink part of the board and less extras so lower price
2014-02-26T16:42:24 < beaky> wow
2014-02-26T16:42:46 < beaky> thats awesome now i wish they made m4 nucleos
2014-02-26T16:42:54 < Rickta59> they do
2014-02-26T16:43:22 < beaky> i mean stm32f3* nucleos
2014-02-26T16:43:39 < Rickta59> NUCLEO-F401RE
2014-02-26T16:45:37 < beaky> aww but its the lowend one without hardware crypto :(
2014-02-26T16:45:40 < zyp> mass storage firmware loader isn't really an advantage in any sense IMO
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2014-02-26T16:47:52 < Rickta59> yeah it is really so they can target the mbed community
2014-02-26T16:47:53 < zyp> the sole point of it is to have a way of loading firmware that doesn't require any extra software, which ties into how the web IDE avoids the need for other software
2014-02-26T16:50:13 < jpa-> dso quad's mass storage bootloader is funny.. it emulates only a 512kB disk, so a hex file for the whole MCU flash cannot fit there :P
2014-02-26T16:51:17 < zyp> wat
2014-02-26T16:51:19 < zyp> :p
2014-02-26T16:55:17 < beaky> should i use the fpu in my stm32f3
2014-02-26T16:55:20 < beaky> or should i stick to fixpoint math
2014-02-26T16:55:22 < beaky> which is best?
2014-02-26T17:00:54 < zyp> it's best to use doubles
2014-02-26T17:01:22 < nine-tails> beaky: http://i.imgur.com/pzncx9o.png
2014-02-26T17:02:04 < beaky> doubles? but arent floats the one to go for
2014-02-26T17:05:04 < zyp> doubles have more range than floats and better precision than both floats and ints
2014-02-26T17:05:26 < zyp> more range than ints too
2014-02-26T17:05:36 < beaky> but what abot speed
2014-02-26T17:05:43 < beaky> isn't the hardware fpu just for single-point float
2014-02-26T17:05:47 < zyp> yep
2014-02-26T17:06:00 < beaky> also aren't there fixpoint instructions on m4
2014-02-26T17:06:09 < beaky> so i guess best performance is from fixpoint
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2014-02-26T17:30:33 < qyx_> uh
2014-02-26T17:30:45 < qyx_> zyp: good suggestion, i should try with doubles too
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2014-02-26T18:00:55 < Avi> trying to make a timer clocked/count by external pin, anyone know why the count is stuck at 0? http://pastebin.com/npPpmLbu
2014-02-26T18:01:03 < Avi> on stm32F407
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2014-02-26T18:46:09 < karlp> Rickta59: you don'tneed "maintainer mode" for oocd anymore
2014-02-26T18:47:25 < beaky> so...
2014-02-26T18:47:28 < beaky> wtf is stm32 cube
2014-02-26T18:48:18 < beaky> http://www.st.com/web/en/press/p3517
2014-02-26T18:49:01 < Avi> slome silly tool that makes startup files for you (and nothing much else)
2014-02-26T18:49:22 < beaky> aww
2014-02-26T18:49:35 < beaky> i thought it was a drag-n-drop configuration thing
2014-02-26T18:50:02 < beaky> so i can get the same result by just flipping registers bits?
2014-02-26T18:55:47 < Avi> ofcpourse
2014-02-26T18:55:50 < Avi> ofcourse
2014-02-26T19:04:35 -!- Claude is now known as claude
2014-02-26T19:07:36 < nine-tails>                  ?19:06:09          beaky | with stm32
2014-02-26T19:08:04 < beaky> ?
2014-02-26T19:08:20 < nine-tails> you ask here
2014-02-26T19:08:27 < beaky> how do i make my own quadcopter with stm32
2014-02-26T19:08:33 < nine-tails> first you need to know your budget
2014-02-26T19:08:39 < beaky> under 100 bucks
2014-02-26T19:08:51 < beaky> (not counting stm32)
2014-02-26T19:08:59 < nine-tails> gime 5 mins to google
2014-02-26T19:09:00 < nine-tails> pls
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2014-02-26T19:13:10 < Lux> beaky: buy a naze32 at abusemak.com
2014-02-26T19:13:24 < beaky> whats a naze32
2014-02-26T19:13:37 < Lux> stm32 flight control for a quad
2014-02-26T19:13:54 < Lux> 50$
2014-02-26T19:13:56 < madist> *abusemark
2014-02-26T19:14:04 < beaky> wow
2014-02-26T19:14:05 < Lux> it's dongs stuff
2014-02-26T19:14:12 < beaky> dongs made it?
2014-02-26T19:14:15 < Lux> yeah
2014-02-26T19:14:27 < beaky> wow thats awesome ill buy
2014-02-26T19:15:04 < Lux> here's the code: https://github.com/multiwii/baseflight
2014-02-26T19:15:19 < Lux> nothing really advanced, but it works
2014-02-26T19:15:23 < Steffanx> beaky, dongs won't send it to you.. im sure.
2014-02-26T19:15:34 < Lux> possible ^^
2014-02-26T19:15:40 < nine-tails> :D
2014-02-26T19:15:42 < nine-tails> :D
2014-02-26T19:15:49 < nine-tails> how much is ypi
2014-02-26T19:16:04 < Steffanx> google knows
2014-02-26T19:16:33 < nine-tails> i cant open ffox
2014-02-26T19:16:42 < Steffanx> use internet explorer
2014-02-26T19:16:57 < beaky> use chromium
2014-02-26T19:17:36 < Steffanx> and you love it.
2014-02-26T19:18:35 < nine-tails> w8 i have to shut down virtual winsows 8 amateur
2014-02-26T19:18:41 < nine-tails> it eats 99.99% of my ram
2014-02-26T19:18:51 < nine-tails> my lunix is happy with 0.01% though
2014-02-26T19:19:04 < beaky> so with dongs' flight controller, what else do i need to make a quadcopter
2014-02-26T19:19:06 < Steffanx> why use w8 in a vm?
2014-02-26T19:19:12 < Steffanx> magic.
2014-02-26T19:19:34 < nine-tails> Steffanx: because stupid lattice' licence is faulty.. in other words they provide linux/bsd version of diamond
2014-02-26T19:20:00 < Steffanx> beaky, can you please do some research yourself..?!
2014-02-26T19:20:08 < nine-tails> Steffanx: but.... it has some "licencing issues", so i run it in virtual win8 with a FAKE mac address.. so it thinks its geniue
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2014-02-26T19:21:12 < nine-tails> beaky: i could address you to my friend (or give you his bithub)
2014-02-26T19:21:16 < nine-tails> Steffanx: you got it ?
2014-02-26T19:22:50 < kuldeepdhaka> <Steffanx> use internet explorer              <----- <div style="font-size:500em">LOL</div>
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2014-02-26T19:24:09 < Steffanx> IE is more: <marquee><blink><font color="red">Wheeee</font></blink></marquee> or something :P
2014-02-26T19:25:47 < Rickta59> thanks karlp I make note of that
2014-02-26T19:26:10  * kuldeepdhaka feel sad for Steffanx :'(
2014-02-26T19:27:33 < kuldeepdhaka> IE is nightmare for Web Dev's (the dark monster at some point in life of every Web Dev's)
2014-02-26T19:28:28 < Steffanx> everything below ie9 perhaps
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2014-02-26T19:28:54 < beaky> windows xp dies hard
2014-02-26T19:30:06  * nine-tails is finding out the right windows product to use
2014-02-26T19:30:33 < kuldeepdhaka> future findings: Dont use them
2014-02-26T19:30:39 < kuldeepdhaka> :p
2014-02-26T19:31:26 < nine-tails>  kuldeepdhaka you dont say
2014-02-26T19:31:37 < nine-tails> kuldeepdhaka: what do you use for hardware development ?
2014-02-26T19:31:44 < nine-tails> kuldeepdhaka: lunix ???
2014-02-26T19:32:24 < kuldeepdhaka> nine-tails, GNU/Linux
2014-02-26T19:32:47 < nine-tails> kuldeepdhaka: sure arm-gcc and eabi
2014-02-26T19:32:53 < nine-tails> debufger
2014-02-26T19:33:23 < kuldeepdhaka> nine-tails, hum
2014-02-26T19:33:28 < kuldeepdhaka> openocd
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2014-02-26T19:34:56  * nine-tails stops searching for windows.
2014-02-26T19:35:10  * nine-tails listens to kuldeepdhaka , although not sure if kuldeepdhaka is trolling
2014-02-26T19:35:11 < beaky> use archlinux
2014-02-26T19:35:50 < beaky> kuldeepdhaka is absolutely right GNU/linux is alright for stm32
2014-02-26T19:36:43 < nine-tails> beaky: do you use archlinux ?
2014-02-26T19:37:28 < beaky> yes
2014-02-26T19:39:22 < nine-tails> beaky: what ide you use ?
2014-02-26T19:40:12 < kuldeepdhaka> shell and makefile
2014-02-26T19:40:20 < kuldeepdhaka> learn once, happy forever
2014-02-26T19:40:42 < kuldeepdhaka> buy 3digit crapware, fight for life :p
2014-02-26T19:40:48 < beaky> nine-tails: i sue vim
2014-02-26T19:40:51 < beaky> use
2014-02-26T19:40:52 < nine-tails> kuldeepdhaka: got any tutus
2014-02-26T19:41:01 < nine-tails> beaky: tutos ?
2014-02-26T19:41:09 < beaky> vimtutor
2014-02-26T19:41:15 < beaky> thats how i learned vim
2014-02-26T19:41:17 < nine-tails> no.. arm.tutor
2014-02-26T19:41:20 < beaky> oh...
2014-02-26T19:41:32 < beaky> i learned ARM from you guys!
2014-02-26T19:42:41 < kuldeepdhaka> nine-tails, first try makefile and host arch gcc commands to build things and then use the same technique for uC (though with minor difference)
2014-02-26T19:42:56 < kuldeepdhaka> everything is same, just cross compiled for uC
2014-02-26T19:43:40 < kuldeepdhaka> get any simple project and dissect it :)
2014-02-26T19:47:05 < Avi> beaky: i need a new quadcopter
2014-02-26T19:47:25 < nine-tails> kuldeepdhaka: forgive me for being a microtardsoft fanboy
2014-02-26T19:47:33 < Avi> tired of these stupid custom part ones that break and then you have to bin it
2014-02-26T19:48:12 < kuldeepdhaka> nine-tails, :)
2014-02-26T19:48:19 < beaky> how do i take advantage of stm32f3 satmath
2014-02-26T19:49:33 < gxti> i dunno beaky ask the googles
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2014-02-26T19:51:45 < beaky> oh
2014-02-26T19:51:49 < beaky> theres a dsp lib
2014-02-26T19:55:45 < nine-tails> beaky: in a nutshell you have 4 motors + 4 esc's for around 60$
2014-02-26T19:55:56 < nine-tails> the batteries shall run you 30$
2014-02-26T19:56:09 < nine-tails> and you have 10$ for some cheapo ebay tx/rx modules
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2014-02-26T19:57:10 < beaky> tx/rx?
2014-02-26T19:57:24 < gxti> lol...
2014-02-26T19:57:29 < nine-tails> or you can use android phone for comm
2014-02-26T19:57:38 < nine-tails> or use android phone as brain
2014-02-26T19:57:45 < gxti> i guess first he needs to buy a clue, and those aren't cheap
2014-02-26T19:58:07 < nine-tails> because you have accelerometer,gps,gyro, and magnetometer on your phone
2014-02-26T19:58:40 < nine-tails> you will get more than 10 minutes uptime
2014-02-26T19:58:48 < nine-tails> flighttime
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2014-02-26T20:07:18 < chris_99> does anyone here use a J-Link clone programmer with an stm board? i'm just wondering if you need any additional cables
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2014-02-26T20:22:17 < Avi> android....
2014-02-26T20:22:25 < Avi> good luck getting realtime data out of that
2014-02-26T20:22:46 < Avi> sime ms is far too much lag for a drone
2014-02-26T20:22:49 < Avi> some
2014-02-26T20:23:36 < Avi> gotta reboot
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2014-02-26T20:23:44 < Avi> bbl, or not
2014-02-26T20:23:50 < nine-tails> Steffanx: did you buy it ?
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2014-02-26T20:25:43 < nine-tails> Steffanx: ?
2014-02-26T20:26:55 < Steffanx> ...?
2014-02-26T20:27:00 < nine-tails> Steffanx: me leaving ?
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2014-02-26T22:47:39 < Jack3k3> emeb by some miracle this monstrosity that i based on your code worked on first compile! lol
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2014-02-26T22:57:34 < Jack3k3> hmmph.. well i thought it was working, it seems like the linein is just being connected to the headphone out even without code that specifically does that
2014-02-26T23:00:25 < Jack3k3> maybe im crazy on second thought!
2014-02-26T23:04:05 < emeb> Jack3k3: that's a start tho
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2014-02-26T23:10:40 < Jack3k3> yeah i need to look through it but its acting kinda strange like its just defaulting to passin the linein to the left headphone since modifiying the buffer in the mcu isnt changing things.. but perhaps im playing with the wrong one
2014-02-26T23:12:57 < Laurenceb__> http://tinyurl.com/p6pypus
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2014-02-26T23:35:33 < Jack3k3> yah turns out its not working, the thing must be configured to pass thru the left channel or something
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2014-02-26T23:39:28 < Jack3k3> im guessing its the analog mixer actually
2014-02-26T23:40:18 < emeb> Jack3k3: interesting - what did you send to the control port?
2014-02-26T23:41:17 < emeb> my code shouldn't be enabling the analog bypass, so unless you changed the control reg setup it shouldn't be doing that.
2014-02-26T23:41:24 < Jack3k3> well i should be clear first, this is a uda1380 codec not the wolfson chip you're using
2014-02-26T23:41:27 < Jack3k3> so that's probabl part of it
2014-02-26T23:41:32 < emeb> aha.
2014-02-26T23:41:34 < Jack3k3> im using different settings and they are probably wrong
2014-02-26T23:41:37 < Jack3k3> :p
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2014-02-26T23:49:23 < Jack3k3> from what i can tell stm32f405xx and stm32f407xx should be fairly identical in terms of port names/interfaces so i think I'm okay there
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2014-02-27T00:37:28 < Jack3k3> emeb, whats with the preprocessor if statements in the audio_delay and other functions that defaults to asm("ssat %[dst], #16, %[src]" : [dst] "=r" (sum) : [src] "r" (sum)); ? Is this just an optimized method of keeping the buffer within a range?
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2014-02-27T00:47:47 < SlaveToTheSauce> https://www.kickstarter.com/projects/1859884318/oscar-the-open-screen-adapter attn dongs
2014-02-27T00:48:23 < SlaveToTheSauce> your version was doomed to fail anyway, no arduino compatibility
2014-02-27T00:48:28 < emeb> Jack3k3: that's inline assy, not preprocessor
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2014-02-27T00:48:49 < emeb> it's a saturation operation - just keeps the value clamped to the range +/-32767
2014-02-27T00:49:16 < emeb> there's alternate C code that does the same thing in that routine for reference.
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2014-02-27T00:59:19 < Jack3k3> oh okay gotit
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2014-02-27T01:22:07 < Laurenceb_> http://www.youtube.com/watch?v=PqI-28meTZ8
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2014-02-27T01:33:05 < Steffanx> Hi Laurenceb_ how are you today?
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2014-02-27T01:51:55 < Jack3k3> emeb, soo, as best I can tell void DMA1_Stream3_IRQHandler(void) is never getting called and i'm not sure why
2014-02-27T01:53:15 < Jack3k3> so I guess either the interrupt is not setup correctly or i'm not actually receiving anything via i2s
2014-02-27T01:54:02 < Jack3k3> i'm guessing the former since I can configure the uda1380 chip via i2c to use the analog mixer and get the line in out of the headphone port
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2014-02-27T02:17:17 < Jack3k3> emeb, doh i found the huge problem! the uda1380 uses i2s2 and i2s3 on my board for send/receive full duplex, so ill have to do some more major modifications
2014-02-27T02:17:40 < Jack3k3> looks like your board just uses i2s2 w/ an external line heh
2014-02-27T02:17:43 < ds2> thought i2s is full duplex?!
2014-02-27T02:18:20 < zyp> i2s by itself is not, but the peripherals are
2014-02-27T02:18:48 < ds2> but doesn't I2s have a rx and a tx line defined?
2014-02-27T02:18:52 < zyp> no
2014-02-27T02:19:10 < zyp> i2s is just bitclock/wordclock and data
2014-02-27T02:19:24 < zyp> and optionally master clock
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2014-02-27T02:20:19 < ds2> guess I the boundary between the hw blocks on the bigger chips doing I2S and I2S itself is not very clear
2014-02-27T02:20:25 < ds2> s/I//
2014-02-27T02:20:44 < zyp> well, in full duplex mode you just have two data lines on the same clocks
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2014-02-27T02:22:47 < zyp> the peripheral is a shift register, so it shifts in from one data line while shifting out on the other, so that part is practically free
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2014-02-27T02:23:00 < ds2> that seems to be always the case on the bigger chips
2014-02-27T02:29:12 < Jack3k3> so is using two i2s different from using an i2s in full duplex?
2014-02-27T02:30:18 < ds2> generally yes
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2014-02-27T02:33:16 < Jack3k3> how so?
2014-02-27T02:33:53 < ds2> clocking is potentially different
2014-02-27T02:34:07 < ds2> but most of this is based on the bigger chips not the stm32 so...
2014-02-27T02:34:53 < Jack3k3> hmm
2014-02-27T02:35:16 < Jack3k3> welp im super lost on how to set this up now
2014-02-27T02:35:28 < ds2> on the bigger chips - rx and tx is sample either at the same edge or opposite edge in a configureable and deterministic manner
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2014-02-27T02:41:17 < ds2> Jack3k3: what chip?
2014-02-27T02:41:20 < ds2> processor
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2014-02-27T02:53:51 < Jack3k3> ds2 stm32f407
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2014-02-27T03:01:44 < Jack3k3> im looking thru at the pin mappings, for some reason i2s2_ck shows up at pins PB10 and PB13
2014-02-27T03:01:45 < Jack3k3> is this norma
2014-02-27T03:01:48 < Jack3k3> normal
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2014-02-27T03:28:11 < Jack3k3> where can i find out how to use GPIO_AFconfig?
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2014-02-27T03:58:04 < englishman> stm32 reference manual?
2014-02-27T03:58:20 < englishman> oh no
2014-02-27T03:58:25 < englishman> the .chm in the stdlib
2014-02-27T03:58:44 < englishman> combined with the chip datsheet that shows which af type maps to what
2014-02-27T04:00:44 < Jack3k3> yeah i eventually figured it out
2014-02-27T04:16:35 < Jack3k3> i think i got all the gpios configured for using i2s2 and i2s3, now im looking at setting up the i2s config, im having i2s2 be the Master TX so that makes i2s3 be the MasterRX i guess?
2014-02-27T04:16:43 < Jack3k3> or should it be slave rx?
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2014-02-27T04:56:21 < Jack3k3> welp im now at the point where i'm lost
2014-02-27T04:59:57 < Jack3k3> http://codepad.org/2A94NPVG this is what im trying to modify now
2014-02-27T05:00:43 < Jack3k3> its emeb's code, but it's configured for using I2S2 + the i2s2_ext line.. i'm tryin to modify it to use i2s2 and i2s3 for full duplex instead
2014-02-27T05:01:49 < Jack3k3> do the Rx and Tx need ot use separate DMA channels? Currently it's AUDIO_I2S_DMA_CHANNEL and AUDIO_I2S_EXT_DMA_CHANNEL, but i'm wondering if both should be AUDIO_I2S_DMA_CHANNNEL now
2014-02-27T05:13:13 < Jack3k3> actually sorry those names probably make no sense, the standard names would be DMA1_Streamx... so I'm guessing I need two different streams, but I don't know how to select those streams
2014-02-27T05:14:50 < Jack3k3> answered my own question i think with the ref manual... :o
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2014-02-27T06:08:08 < Jack3k3> hmmmmmmm so i completed all the modifications I thought I needed and yet it seems the interrupt is still not getting called
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2014-02-27T07:18:37 < Jack3k3> ok i've uploaded my latest sources here https://github.com/jack3k3/UDA1380Codec
2014-02-27T07:19:25 < Jack3k3> i feel like its really close, the critical stuff is in I2S.c and codec.c
2014-02-27T07:19:47 < Jack3k3> i'm not sure if i've setup the i2s2 and i2s3 together to work as full duplex correctly
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2014-02-27T07:24:43 < Jack3k3> dongs save me
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2014-02-27T08:08:39 < rbarris> here is my stm32f429 question, in the context of the discovery board with the 429/SDRAM/LCD on it
2014-02-27T08:09:11 < rbarris> if I find a pin in the board doc that is labeled as "free I/O" - for example PB7 - how do i figure out what roles it can take on?
2014-02-27T08:09:54 < rbarris> the IO pins are kinda swiss cheesed due to the 144 pin package and also having LCD and SDRAM soaking up lots of pins.  So, working through the list of the ones that are still free, to see if I can cobble together the IO that I want.
2014-02-27T08:10:25 < rbarris> (already found out that the second DAC output is not available thanks to the LCD VSYNC line being wired there)
2014-02-27T08:13:11 < Thorn> the datasheet has a function table
2014-02-27T08:13:30 < Thorn> pins vs. alternate functions
2014-02-27T08:13:54 < rbarris> ref manual ?
2014-02-27T08:14:16 < rbarris> stm32f4 reference manual ?  rm0090 or some other doc
2014-02-27T08:14:20 < qyx_> no, datasheet
2014-02-27T08:14:21 < rbarris> <off to ST site again>
2014-02-27T08:14:23 < rbarris> ok
2014-02-27T08:14:51 < rbarris> OK I have that.  looking.  tnx
2014-02-27T08:16:44 < rbarris> found it.  tnx again
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2014-02-27T09:53:23 < Thorn> eastrising stuff arrived
2014-02-27T09:57:22 < Claude> Thorn, what did you get from there? just got a 7" hdmi with touch from them
2014-02-27T09:57:48 < Claude> tft panel sucks on the 7" :/
2014-02-27T09:58:57 < Thorn> 2 7" panels, a vga driver board and 3 128x64 displays
2014-02-27T09:59:29 < Thorn> how much did you pay for shipping?
2014-02-27T10:00:46 < Claude> oh don't know , but let me look up
2014-02-27T10:01:22 < Claude> US$11.68 to germany
2014-02-27T10:01:46 < Claude> took about 2 months to arrive , probably due to CNY...
2014-02-27T10:02:06 < Thorn> did you buy direct from buydisplay.com?
2014-02-27T10:03:06 < Claude> yep
2014-02-27T10:04:27 < Thorn> interesting. my only shipping option was $51
2014-02-27T10:04:49 < Claude> also looking for a way to change the EDID stuff on the realtek scaler chip , any clue how to do that? found some chinese and russian sites but all the downloads for the rtd (realtek) tools are only for members
2014-02-27T10:05:45 < Claude> yeah in the end i paid around 45euros for a half decent 7"hdmi with touch :) not too bad
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2014-02-27T10:06:36 < Claude> if they only would offer the 7" cap touch with hdmi or at least with parallel rgb . would made a nice display for embedded stuff
2014-02-27T10:07:05 < Claude> parallel rgb != 8080 interface . plain rgb with h and v syncs i mean
2014-02-27T10:07:34 < Thorn> no idea, I'm not planning to actually use the realtek board, got it to have something to test the panels
2014-02-27T10:07:41 < Claude> ah
2014-02-27T10:07:58 < Thorn> I'm going to use those with stm32f429 (LTDC controller)
2014-02-27T10:08:35 < Claude> yeah well i would then go for a AT070TN92 display then , much brighter and nicer colors
2014-02-27T10:09:23 < Thorn> that's what I'm thinking too lol. also more sources
2014-02-27T10:10:01 < Thorn> I didn't like it because of 4 or 5 supply voltages but I guess it's not a big problem
2014-02-27T10:11:47 < Thorn> I guess I should try and support both (design a board with 2 connectors or something)
2014-02-27T10:16:43 < Claude> also did a lot with EDT displays in my former job , quite nice displays. most a are single supply (VCC) and the price is okay
2014-02-27T10:17:46 < Claude> hitachi displays are great too , but  very expensive :/
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2014-02-27T10:31:59 < rbarris> i've arrived at the concussing that the discovery-429 board is pretty gimped in terms of being able to utilize a lot of the IO paths, because SDRAM and TFT-LCD are hovering up many of the pins
2014-02-27T10:32:40 < rbarris> I think I can see I2C3 working, but can't find any surviving SPI pin set (i.e. clk, modi, miso) - there is one free but it's wired to the gyro
2014-02-27T10:32:47 < rbarris> CAN bus is gone too
2014-02-27T10:33:03 < Thorn> https://www.youtube.com/watch?v=6igNZiVtbxU
2014-02-27T10:33:27 < rbarris> what's painful is the number of cases where two of three pins are there for an SPI, but LCD camps on one of them
2014-02-27T10:33:58 < rbarris> so I guess I want a discovery board with an LQFP208 package on it instead
2014-02-27T10:34:14 < rbarris> though i don't think that actually resolves all the conflicts..
2014-02-27T10:35:14 < rbarris> i think this pushes me back towards the '407 and an SPI display
2014-02-27T10:35:33 < Thorn> you want your own board
2014-02-27T10:35:37 < rbarris> well yeah
2014-02-27T10:36:11 < rbarris> but even if i did that, if there are built-in conflicts whereby using the TFT controller ad the SDRAM means most of the i2c/spi/can interfaces are gone..
2014-02-27T10:36:22 < rbarris> i don't think that changes in the bigger packages.
2014-02-27T10:36:57 < rbarris> i.e. the alternate function map for pins, is invariant with package
2014-02-27T10:37:22 < rbarris> which i guess makes sense, it's the same chip inside right
2014-02-27T10:37:36 < Thorn> each function is available on several pins
2014-02-27T10:37:36 < rbarris> just more pads wired to pins ?
2014-02-27T10:38:36 < rbarris> reading through again
2014-02-27T10:40:05 < Claude> Thorn, the F4xx datasheet claims the lcd controller can only go up to 800x600 . do you know if that is a real limitation or just some precaution of ST (e.g. sdram bandwidth)
2014-02-27T10:41:08 < Thorn> the ref man even says 640x480 in one place (which is most likely an error)
2014-02-27T10:43:13 < Claude> ah or 640x480 even , yeah had a similar thing at an imx233 . datasheet says only up to 640x480 but the chips goes quite well up to 1024x768
2014-02-27T10:43:56 < Thorn> well people are already using 800x600 displays with it so the 640x480 thing is most likely wrong
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2014-02-27T10:44:13 < Thorn> (I'm planning to use 800x480 displays)
2014-02-27T10:45:07 < Thorn> it would be interesting to calculate whether e.g. 1024 pixels + hsync + porches can fit into timing registers
2014-02-27T10:45:18 < Thorn> I think there's enough room for that
2014-02-27T10:46:32 < Thorn> and it does 16-word sdram bursts iirc
2014-02-27T10:47:37 < Thorn> not sure how high the pixel clock freq can go though
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2014-02-27T10:53:33 < Claude> hmm if the pixelclock is the limiting factor , tft displays work most times quite well with reduced pixelclock :)
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2014-02-27T11:07:53 < Thorn> ok 6.3.28 in the datasheet: max LTDC clock output freq = 42MHz
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2014-02-27T11:20:39 < Thorn> LPC43xx has a tft controller which supports up to 1024x768.
2014-02-27T11:24:41 < Claude> 800x600 is around 40MHz
2014-02-27T11:26:12 < Claude> quite a load for the poor sdram @16bit and 86MHz ?
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2014-02-27T11:43:02 < Thorn> rtd2660 on the driver board gets hot
2014-02-27T11:47:49 < Claude> yes mine too
2014-02-27T11:48:07 < Claude> stays cooler when using hdmi , vga gets really hot
2014-02-27T11:48:28 < Thorn> right, I'm using vga
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2014-02-27T12:00:52 < Thorn> eastrising is on ebay http://stores.ebay.com/BuyDisplay/
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2014-02-27T12:19:35 < dongs> k back from aids
2014-02-27T12:20:16 < dongs> SlaveToTheSauce: looks like its heading towards fail
2014-02-27T12:20:20 < dongs> http://www.kicktraq.com/projects/1859884318/oscar-the-open-screen-adapter/
2014-02-27T12:21:10 < dongs> trending towards nobody gives a fuck
2014-02-27T12:21:13 < dongs> i nee dto restock my boards
2014-02-27T12:21:16 < dongs> im out and people are bitching
2014-02-27T12:21:40 < nine-tails> arduino compatible <3
2014-02-27T12:21:55 < tp> dongs, did the 10k rolls show up as planned ?
2014-02-27T12:22:07 < dongs> ya
2014-02-27T12:22:12 < tp> nice :)
2014-02-27T12:22:16 < dongs> they actaulyl sent it on a reel, which was nice.
2014-02-27T12:22:23 < dongs> that was extra $10 fee to do it.
2014-02-27T12:22:26 < tp> yeah
2014-02-27T12:22:28 < dongs> which i didnt pay
2014-02-27T12:22:32 < tp> lol
2014-02-27T12:22:43 < tp> maybe easier for them to do it that way
2014-02-27T12:23:21 < dongs> according to stock it was their last stock anyway
2014-02-27T12:23:30 < dongs> so they'd just unroll it and send as cut tape or send whole reel back.
2014-02-27T12:23:41 < dongs> bbl dinner
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2014-02-27T14:18:24 < Thorn> these 128x64 displays need 9(!) 1uF caps
2014-02-27T14:22:05 < Thorn> http://www.buydisplay.com/download/interfacing/ERC12864-2_Interfacing.pdf
2014-02-27T14:49:07 < dongs> haha
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2014-02-27T15:19:03 < zyp> dongs, so, that logic analyzer
2014-02-27T15:19:13 < zyp> I want one, but I don't want to pay 25% import tax on it
2014-02-27T15:21:12 < zyp> you mentioned something about buying directly from tw, is that a possibility?
2014-02-27T15:21:38 < dongs> yes, should be
2014-02-27T15:21:44 < dongs> i can poke them and see if they'll give me a deal
2014-02-27T15:21:48 < dongs> for beign a nice customer
2014-02-27T15:22:02 < dongs> and i have a dude in .tw who can pick it up locally and takes paypal etc.
2014-02-27T15:23:36 < zyp> ah, right
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2014-02-27T15:24:41 < zyp> I'd like a couple of price options, but I think I want one with 72M
2014-02-27T15:25:09 < zyp> but I'm not sure I need the extra stuff of the TL2236B, so if the TL2236 is still available I'd like a price for either
2014-02-27T15:25:20 < dongs> what does B do extra?
2014-02-27T15:25:25 < dongs> i forget
2014-02-27T15:25:38 < zyp> I'm not completely sure, I think it's mostly extra trigger stuff
2014-02-27T15:25:49 < dongs> ah triggers on fpga
2014-02-27T15:26:21 < zyp> and I'm not sure I want to pay for that if the non-B one is still available
2014-02-27T15:26:27 < dongs> ok
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2014-02-27T15:46:12 < dongs> will q to them tomrow
2014-02-27T15:47:09 < dongs> bed
2014-02-27T15:47:14 < dongs> 400km drive + 3  hours in flight
2014-02-27T15:47:16 < dongs> aids
2014-02-27T15:48:20 < zyp> fun fun
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2014-02-27T16:21:45 < Laurenceb> http://www.theregister.co.uk/2014/02/27/twitter_critics_slam_hideous_statue_of_steve_jobs/
2014-02-27T16:21:50 < Laurenceb> truly epic lulz
2014-02-27T16:25:53 < Laurenceb> http://www.perisoft.org/doomjobs.jpg
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2014-02-27T17:42:30 < Steffanx> Meh, the "old" bmp uses a level translator. That totally messes up my current measurements :(
2014-02-27T17:42:54 < zyp> why would you even measure current with a jtag adapter hooked up?
2014-02-27T17:43:51 < Steffanx> because i don't want to disconnect it allll the time.
2014-02-27T17:44:10 < zyp> …
2014-02-27T17:44:26 < zyp> why do you need to measure current all the time? :p
2014-02-27T17:44:56 < Steffanx> noo, but i want to have kind of a indication it "works", with the debugger hooked up its always > 3mA
2014-02-27T17:45:16 < Steffanx> and the sleep current it so low it isn't visible.
2014-02-27T17:45:28 < Steffanx> *is
2014-02-27T17:45:41 < Steffanx> *current in sleep-mode
2014-02-27T17:47:35 < zyp> what about active mode?
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2014-02-27T17:49:18 < Steffanx> yeah, maybe i shouldn't even care about it right now. I can see it runs goes in to sleep-mode but not how low the current use is. '
2014-02-27T17:49:38 < zyp> see, problem solved
2014-02-27T17:50:39 < Steffanx> i don't trust my current measurements anyway. Everything uses ~16uA in sleep-mode according to my dmm + uCurrent.
2014-02-27T17:50:57 < Steffanx> That's incl ldo + opamps
2014-02-27T17:51:09 < Steffanx> + sensor
2014-02-27T17:51:17 < zyp> heh
2014-02-27T17:52:12 < Steffanx> It could be possible though, but i've no good way to verify. It's all TI ultra low current stuff, except for the uc and sensor.
2014-02-27T17:52:35 < Rickta59> so it seems like no one uses the st standard peripheral library .. why does st continue to ship it and not offer gcc makefiles?
2014-02-27T17:53:17 < zyp> instead of «no one» try «no one, except the volume customers that actually matter»
2014-02-27T17:53:31 < Steffanx> Yeah, people like dongs do use it ;)
2014-02-27T17:53:37 < Rickta59> ok .. so people do use it?
2014-02-27T17:54:02 < Steffanx> i think mostly the hobbyists don't use it.
2014-02-27T17:54:07 < zyp> well, dongs does
2014-02-27T17:56:05 < Steffanx> they question is does he use it because it is great or because it's the only lib that is not GPL?
2014-02-27T17:56:15 < Rickta59> heh
2014-02-27T17:56:50 < Steffanx> *the
2014-02-27T17:57:14 < zyp> and I guess that in large scale projects, the decision to use the tools supplied by the chip vendor is taken as a business decision above the individual developers' heads
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2014-02-27T18:16:56 < Jack3k3> anyone familiar with using two i2s's to run full duplex to a chip I could use some help
2014-02-27T18:18:27 < Jack3k3> this code shows the functions for setting up gpio pins for i2s2 and i2s3, https://github.com/jack3k3/UDA1380Codec/blob/master/codec.c
2014-02-27T18:18:58 < Jack3k3> as well as configuring the i2s  interface (note i'm using i2s2 for TX and i2s3 for RX)
2014-02-27T18:19:39 < Jack3k3> this code shows setting up the i2s for DMA with IRQ, https://github.com/jack3k3/UDA1380Codec/blob/master/I2S.c
2014-02-27T18:19:54 < Jack3k3> I think there must be an error somewhere in here but I haven't quite found it
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2014-02-27T18:23:02 < zyp> how does the hardware look?
2014-02-27T18:25:33 < zyp> are both mck, ws and ck pins connected together?
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2014-02-27T18:29:05 < zyp> Laurenceb, I hear you guys don't like cold weather
2014-02-27T18:29:08 < zyp> http://www.dailymail.co.uk/news/article-2568384/British-soldiers-banned-training-snowy-conditions-Norwegian-base-health-safety-rules-deem-COLD.html
2014-02-27T18:29:36 < Jack3k3> zyp well i'm using a stm32f407 chip, the UDA1380 audio codec chip has RX_SDA,RX_CLK,RX_WS, as well as TX_CLK, TX_WS, TX_SDA, these are connected as  so, RX_CLK -> I2S3_CK, RX_WS -> I2S3_WS, RX_SDA -> I2S3_SD, RX_MCLK-> I2S3_MCK
2014-02-27T18:30:07 < zyp> oh, ok
2014-02-27T18:30:07 < Jack3k3> and TX_CLK -> I2S2_CK, TX_WS-> I2S2_WS, TX_SDA-> I2S2_SD, TX_MCLK-> I2S2_MCK
2014-02-27T18:30:55 < zyp> are you sure the chip does one slave and one master interface then? maybe the chip is a slave on both, so it's expecting you to run both as a master
2014-02-27T18:31:41 < Jack3k3> oh maybe, ill have to check
2014-02-27T18:31:45 < zyp> hmm, is this on a waveshare board?
2014-02-27T18:31:48 < Jack3k3> yep
2014-02-27T18:31:52 < Jack3k3> open407v-c
2014-02-27T18:32:15 < zyp> ah, right, I have one of the other ones
2014-02-27T18:32:32 < zyp> thought it sounded familiar ;)
2014-02-27T18:33:28 < Jack3k3> yea theyre nice
2014-02-27T18:33:49 < Jack3k3> also a general question, when i was looking in the datasheet for the i2s2 pin names, often times there are multiple pins, example i2S3_SD is shown on PB3, PB5, PC12
2014-02-27T18:34:00 < zyp> that means you get to choose
2014-02-27T18:34:07 < Jack3k3> does enabling any single one of these in the gpio config enable them all?
2014-02-27T18:34:15 < zyp> no, of course not
2014-02-27T18:34:15 < Jack3k3> or do i have to make sure im connected to the one im enabled physically
2014-02-27T18:34:22 < Jack3k3> ohh so im probably an idiot
2014-02-27T18:34:33 < zyp> you have to make sure that you only enable the one that is actually connected
2014-02-27T18:34:42 < Jack3k3> and i now know my problem
2014-02-27T18:34:43 < Jack3k3> :)
2014-02-27T18:34:45 < Jack3k3> at least one of them
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2014-02-27T18:54:04 < Lux> has anyone done a hardware spi on an stm32 with an odd protocol length like 25 bits ?
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2014-02-27T18:57:44 < zyp> odd indeed
2014-02-27T18:58:14 < zyp> max word length supported by hardware is 16 bits
2014-02-27T18:58:28 < Jack3k3> when enabling the GPIO clocks for i2s how do you know which to enable? This example code shows enabling AHB1Periph_GPIOC and AHB1Periph_GPIOB, does it need to be all registers that youre using for the i2s? i.e. if i2s2 and i2s3 span across A,B,C GPIOs i need clocks for all those?
2014-02-27T18:58:38 < zyp> older families only supports 8 and 16 bits, but the newest are more flexible
2014-02-27T18:59:11 < zyp> for 25 bits you'd probably have to run it in 5 bit mode and transfer five words for every word
2014-02-27T18:59:39 < zyp> Jack3k3, of course
2014-02-27T19:36:05 < Lux> zyp: sounds reasonable thanks
2014-02-27T19:38:09 < Lux> I'm trying to talk to one of those chinese 5.8 ghz fm chips dunno why they can't do something normal
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2014-02-27T20:40:25 < Jack3k3> hmm well i made all the fixes to the gpio's so now they are connecting the right pins
2014-02-27T20:43:58 < Jack3k3> zyp so the uda1380 says the digital audio input interface is slave only (system must provide WSI/BCKI signals)
2014-02-27T20:44:09 < Jack3k3> the digital audio output interface can either be master or slave
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2014-02-27T20:47:01 < Jack3k3> currently the uda1380 is configured so that the output interface is in slave
2014-02-27T20:47:27 < Jack3k3> so I guess that means the i2s3 RX interface on the mcu should be set to master then?
2014-02-27T20:48:24 < zyp> yep
2014-02-27T20:48:47 < zyp> either that or reconfigure uda1380 to be master
2014-02-27T20:54:53 < Jack3k3> damn.. still no luck
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2014-02-27T20:55:08 < Jack3k3> the DMA1_Stream7_IRQHandler never seems to trigger
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2014-02-27T21:42:53 < [1]Jack3k3> hummm i wonder what else could e
2014-02-27T21:43:54 < [1]Jack3k3> https://github.com/jack3k3/UDA1380Codec/blob/master/codec.c <- I feel like this code is correct but if anyone has a chance to look at thatd be helpful, its just setting up the i2s2/i2s3 pins and configuring it
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2014-02-27T21:45:07 < [1]Jack3k3> https://github.com/jack3k3/UDA1380Codec/blob/master/I2S.c <- this has the DMA init for the i2s which I also think is correct but something is obviously wrong since  DMA1_Stream7_IRQHandler is never getting triggered
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2014-02-27T22:08:55 < Rickta59> who is the "MCD Application Team" ?
2014-02-27T22:09:10 < Rickta59> is that ST? or a compiler company?
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2014-02-27T22:16:17 < [1]Jack3k3> Rickta59, probably, i think its from the stm32 fw lib examples or something
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2014-02-27T22:19:10 < Rickta59> yes i'm just compiling the hal samples for the nucleo board and was looking at the different source and that is found in most of them
2014-02-27T22:20:50 < Rickta59> i was looking at the code for the Reset_Handler ..
2014-02-27T22:21:05 < Rickta59> and it is setting the stack register to the value of the 0x0 ..
2014-02-27T22:21:22 < Rickta59> and i thought that was strange .. i thought when the chip resets .. all that was automatic
2014-02-27T22:21:34 < Rickta59> so why would you do it explicitly
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2014-02-28T01:12:30 < [1]Jack3k3> would this be the right way to set the DMA_PeripheralBaseAddr for I2S3 : first #define DMA_I2S_RX_DR_ADDR ((SPI_TypeDef *)SPI3) + 0x0C
2014-02-28T01:12:51 < [1]Jack3k3> then DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)DMA_I2S_RX_DR_ADDR;
2014-02-28T01:28:07 < [1]Jack3k3> dongs you around for me to bug
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2014-02-28T01:43:32 < dongs> [1]Jack3k3: no thats fucktarded way
2014-02-28T01:43:43 < dongs> (uint32_t)&I2S2->DR
2014-02-28T01:44:02 < dongs> why obfuscate it twice
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2014-02-28T01:48:14 < Steffanx> lol dongs is up early.
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2014-02-28T02:06:01 < [1]Jack3k3> hmm i duno, ive checked everything, in fact im sure atleast that the TX I2S works fine because I play a wave file off an SD card using some of the sample code... however in that sample they use the DMA1_Stream4 IRQ which is the TX interrupt
2014-02-28T02:06:33 < [1]Jack3k3> however in emeb's code his interrupt is the stream for RX
2014-02-28T02:06:54 < [1]Jack3k3> so essentially if I have the interrupt set like that, it never triggers, if I set to be TX it will trigger
2014-02-28T02:09:36 < [1]Jack3k3> is there some small differences in using a single I2S w/ an external line vs using two I2S for TX/RX ?
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2014-02-28T02:30:24 < dongs> you shoulse use external line.
2014-02-28T02:30:31 < dongs> there might not be enough DMA channels to do both.
2014-02-28T02:30:36 < dongs> check dma channel matrix in datasheet.
2014-02-28T02:30:38 < dongs> which ones you can use.
2014-02-28T02:31:31 < [1]Jack3k3> omfg
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2014-02-28T02:31:47 < [1]Jack3k3> i found it i think
2014-02-28T02:32:14 < [1]Jack3k3> i was using stream 7 for SPI3_RX and it was supposed to be stream0
2014-02-28T02:32:26 < tp> awesome!
2014-02-28T02:33:06 < dongs> see.
2014-02-28T02:33:57 < [1]Jack3k3> dongs such bullshit cause i looked at that chart earlier to find which was the correct stream to use lol... so dumb
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2014-02-28T03:33:43 < dongs> foxconning without a pause
2014-02-28T03:33:45 < dongs> where's chats
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2014-02-28T03:35:53 < GargantuaSauce> i had a dangling pointer that caused magic smoke today
2014-02-28T03:36:12 < GargantuaSauce> still not sure whether to be proud or disgusted with that fact
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2014-02-28T03:38:34 < dongs> waht did you somke
2014-02-28T03:38:37 < dongs> smoke, your servo driver?
2014-02-28T03:38:42 < GargantuaSauce> one of my shitty servos
2014-02-28T03:39:02 < GargantuaSauce> guess i sent it a pulse that was ridiculously short? and it slammed right to an endstop and drew like 8A
2014-02-28T03:39:07 < GargantuaSauce> and i wasnt watching
2014-02-28T03:39:20 < dongs> hot
2014-02-28T03:39:50 < zyp> and the servo doesn't clamp input to valid range? that's ghetto
2014-02-28T03:39:54 < dongs> shoulda used TIM1 with ETR on endstop
2014-02-28T03:40:26 < GargantuaSauce> well i should have had proper parameter sanity checking in one of my functions
2014-02-28T03:40:42 < GargantuaSauce> but yes the shitty $10 chinese servos not having basic protection is annoying
2014-02-28T03:40:50 < GargantuaSauce> i want mx-64s
2014-02-28T03:41:32 < GargantuaSauce> and a goddamn pony also
2014-02-28T03:42:26 < dongs> furfag
2014-02-28T03:42:58 < GargantuaSauce> i'd be using hardware timer channels but 24 is a lot and that'd be a few timer periphs with different timebases to wrangle and it would be a mess and i'd need buffers anyway for 5v-izing it
2014-02-28T03:43:29 < dongs> wut isnt timebase on F4 is either 1:1 or 1:2 for the stuff thats running off AHB or whatever
2014-02-28T03:43:34 < dongs> its not hard to match them
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2014-02-28T03:44:14 < dongs> are you doing tarduino pwm then?
2014-02-28T03:44:20 < dongs> at least using bitbanding hopefully?
2014-02-28T03:44:29 < GargantuaSauce> when i looked into it i think one ended up being on apb1 and one on apb2 or something i cant remember
2014-02-28T03:44:32 < GargantuaSauce> no it's not using gpios
2014-02-28T03:44:38 < GargantuaSauce> spi periph to 74hc595
2014-02-28T03:45:15 < GargantuaSauce> with a busyloop because that's how i roll
2014-02-28T03:45:18 < dongs> oh, shift register heh
2014-02-28T03:45:20 < dongs> nife.
2014-02-28T03:45:21 < dongs> nice.
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2014-02-28T03:47:21 < Jack3k3> hmm so im still up in the air whether this thing is working or not
2014-02-28T03:47:23 < GargantuaSauce> anyway i am sick of these damn hobby servos. they have fixed control loops so you can't tweak things to prevent oscillation when the moment of inertia is different from what the underpaid chinese designers assumed
2014-02-28T03:47:58 < Jack3k3> the interrupt is triggering, but i haven't been able to modify the audio buffer in the mcu to change the output audio
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2014-02-28T04:26:09 < qyx_> 50dBuV is 0.1V, isnt it?
2014-02-28T04:27:25 < Jack3k3> is 0b not valid for binary? 0x seems to work for hex?
2014-02-28T04:28:02 < gxti> it's not standard but i believe GCC accepts it by default
2014-02-28T04:28:14 < dongs> Jack3k3: 0b is a fucktarded gcc extension that no real compiler uses
2014-02-28T04:28:22 < Jack3k3> lol
2014-02-28T04:28:29 < Jack3k3> its easier to see what bits im enabling though :(
2014-02-28T04:28:52 < dongs> then write 1 << 1 | 1 << 4 | etc
2014-02-28T04:29:01 < dongs> even EASIER to see.
2014-02-28T04:29:11 < Jack3k3> yeeah i suppose so
2014-02-28T04:29:14 < gxti> or use constants like a sane person
2014-02-28T04:29:17 < gxti> so they have names
2014-02-28T04:29:24 < gxti> or enums like the c++ weirdos
2014-02-28T04:29:27 < dongs> yes that too
2014-02-28T04:29:40 < BrainDamage> qyx_: yes
2014-02-28T04:29:42 < gxti> i still think there's something gross about doing bit math on enum values, even though i know it's the same shit
2014-02-28T04:32:18 < GargantuaSauce> at least they don't have member functions
2014-02-28T04:32:23 < GargantuaSauce> looking at you, java!
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2014-02-28T04:47:36 < mtbg> hi
2014-02-28T04:53:58 < dongs> hey i think i used member functions in enums
2014-02-28T04:54:00 < Jack3k3> son ofa bitch its still not working, ive confirmed that i only get audio out of the uda1380 if the analog mixer is enabled
2014-02-28T04:54:42 < dongs> that sounds like something you'd need to enable anyway?
2014-02-28T04:55:04 < Jack3k3> as far as I can tell it takes the DAC output and mixes it with the analog line in
2014-02-28T04:55:09 < dongs> o
2014-02-28T04:55:15 < Jack3k3> so it just makes it seem like im getting the signal out of the mcu but im not lol
2014-02-28T04:55:57 < Jack3k3> is it a problem that my i2s2_tx is on same channel (DMAchan0) as the i2s3_rx ? they are on different streams of course but same channel 0
2014-02-28T04:56:59 < emeb_mac> can you check the I2
2014-02-28T04:57:05 < emeb_mac> S data with a scope?
2014-02-28T04:57:15 < emeb_mac> anything on those lines?
2014-02-28T04:57:33 < Jack3k3> ah yes thats definitely doable assuming my shitty usb scope can see it
2014-02-28T04:58:25 < emeb_mac> you'll need at least a 24msps sample rate to fully see it
2014-02-28T04:58:53 < emeb_mac> well, probably works with less...
2014-02-28T04:59:47 < emeb_mac> 4msps would work if your I2S is set up for 16-bit data, stereo...
2014-02-28T04:59:55 < Jack3k3> yea it is
2014-02-28T05:00:36 < emeb_mac> anyway - check that you get data toggling on the codec SDout and SDin pins
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2014-02-28T05:12:53 < Jack3k3> well, i have square waves on the I2s2 CLK/WS/SD but they dont seem to be changing
2014-02-28T05:13:17 < Jack3k3> MCK there is nothing but I think I have that disabled (its not needed)
2014-02-28T05:13:54 < Jack3k3> so it makes sense that i2s2 is quiet if we aren't getting any audio output, let me check i2s3 since that should defeiniteyl be toggling
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2014-02-28T05:22:54 < Jack3k3> soook scratch that
2014-02-28T05:23:44 < Jack3k3> the i2s2 (TX to the uda1380) when i scope the SD pin i get that weird thing on the scope where the screen kinda goes dim and trace goes away, if i zoomout i just find a big 60hz wave
2014-02-28T05:23:52 < Jack3k3> (also i switched to an analog scope)
2014-02-28T05:24:13 < Jack3k3> the i2s3 (RX from the uda1380) does show a square wave on it of some weird duty cycle but I dont see it changing with audio
2014-02-28T05:24:52 < Jack3k3> however its pretty blurry so i may not have the sampling resolution to see it.. the scope is a 50Mhz
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2014-02-28T05:27:06 < emeb_mac> better figure that out
2014-02-28T05:30:00 < dongs> i think the dma table makes it pretty clear wehich channels are shared
2014-02-28T05:31:27 < dongs> but i forgetg what it means on F4.
2014-02-28T05:33:22 < Jack3k3> well im using stream0 and stream4 and channel0 assuming thats not a problem
2014-02-28T05:34:22 < Jack3k3> so i just tested a version that plays an audio file off an sd card (successfully) if i scope the i2s2_sd (TX to uda1380) pin it does the weird dimming thing like i was talking about until the audio starts to play then i see a squarewave signal thats all fuzzy and shit, too hard to read but its definitely visible
2014-02-28T05:35:15 < Jack3k3> it seems to me that the i2s3 is receiving data as well but for some reason its not getting sent back to the i2s so the problem is something in the dma still? i duno
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2014-02-28T05:36:28 < dongs> no, i dont know
2014-02-28T05:36:48 < dongs> youre doing something wrong, without a doubt ;)
2014-02-28T05:54:13 < Jack3k3> hmmm yeah this is weird
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2014-02-28T05:54:38 < Jack3k3> on second analysis, i get clocks on all pins im supposed to but nothign on i2s2_sd or i2s3_sd
2014-02-28T05:54:58 < Jack3k3> i already confirmed my code for i2s2_sd tx works on its own
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2014-02-28T06:14:53 < Jack3k3> so heres a question, if the DMA1_Stream0_IRQHandler is triggering (that corresponds to I2S3_RX) does that mean the mcu is receiving something via i2s3?
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2014-02-28T06:45:37 < dongs> no you should check inside dma irq to see what its actually dong
2014-02-28T06:45:38 < dongs> doing.
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2014-02-28T06:47:43 < tp> what its actually dongs ?
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2014-02-28T06:48:29 < madist> everything is dongs under the covers.
2014-02-28T06:48:41 < rbarris> Jack3k3, seeing 60Hz like that, I wonder if your pin is getting reprogrammed as an input, or put into high impedance mode or something
2014-02-28T06:48:49 < tp> hahah
2014-02-28T06:49:06 < rbarris> silly question but I assume you have your scope ground hooked up too..
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2014-02-28T06:50:51 < qyx_> lol
2014-02-28T06:52:50 < dongs> wat 60hz
2014-02-28T06:52:51 < dongs> did he post a pic
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2014-02-28T06:56:36 < qyx_> dongs: 04:23
2014-02-28T06:56:46 < qyx_> meh
2014-02-28T06:57:09 < dongs>  if i zoomout i just find a big 60hz wave
2014-02-28T06:57:11 < dongs> lo
2014-02-28T06:57:14 < qyx_> 3:23 uct
2014-02-28T06:57:18 < qyx_> utc
2014-02-28T06:57:23 < Jack3k3> rbarris yes its grounded
2014-02-28T06:57:31 < Jack3k3> also yeah i dont know im just guessing its 60hz
2014-02-28T06:57:33 < Jack3k3> its just looks like noise
2014-02-28T06:57:45 < rbarris> you aren't touching it, or letting pin touch tabletop or anything..
2014-02-28T06:58:19 < Jack3k3> but like i said, when i used the program that plays audio fine, the same phenomenon appeared and disaeppeared as soon as audio started playing (i.e. i2s was active)
2014-02-28T06:58:27 < Jack3k3> and a transmission waveform showed on the scope
2014-02-28T06:58:29 < dongs> eh my 5.8ghz trash arrives tomrow
2014-02-28T06:58:30 < Jack3k3> so i think its normal....
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2014-02-28T06:59:07 < rbarris> it sounds like a floating pin.
2014-02-28T06:59:18 < tp> dongs what kind of 5.8gh trash ?
2014-02-28T06:59:26 < rbarris> i.e. when audio is going, it's being driven, but when audio concludes, it's floating
2014-02-28T06:59:28 < dongs> tp: oh, video stuff. illegal in jp
2014-02-28T06:59:32 < tp> ahh
2014-02-28T06:59:43 < rbarris> you could try something like a 10K res to ground and see if that clears it up when idle ?  just a swag
2014-02-28T06:59:43 < Jack3k3> rbarris yeah i suppose that sounds right
2014-02-28T06:59:44 < tp> the kind that spews all over the 5.8ghz band ?
2014-02-28T06:59:47 < Jack3k3> how the fuck is it floating tho
2014-02-28T06:59:48 < dongs> yes
2014-02-28T07:00:01 < dongs> i dont have a 6ghz spectrum analyzer butr I'll see if it spews anything below 3ghz
2014-02-28T07:00:11 < rbarris> try the tiedown resistor, can't hurt anything at 10K ohm
2014-02-28T07:00:23 < rbarris> this is the analog output right
2014-02-28T07:00:37 < Jack3k3> this is scoping i2s_sda
2014-02-28T07:00:43 < rbarris> whoops then no..
2014-02-28T07:01:09 < rbarris> actually that might make sense, if there is a separate clock and no one is clocking, doe the data line just float ?
2014-02-28T07:01:17 < rbarris> i.e. transmitter not driving it high or low
2014-02-28T07:01:33 < tp> dongs:  analog 5.8ghz, anything is possible
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2014-02-28T07:01:50 < Jack3k3> the gpio settings are Speed=50mhz, MODE_AF, Otype_PP, PuPd_NOPULL
2014-02-28T07:02:11 < dongs> diud y ou setup afio?
2014-02-28T07:02:11 < rbarris> so one would think it would be pushed or pulled no matter what
2014-02-28T07:02:20 < dongs> to actually connect it to i2s?
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2014-02-28T07:05:22 < Jack3k3> dongs you mean the gpio_pinafconfig commands ? then yes
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2014-02-28T07:08:13 < dongs> http://gndn.files.wordpress.com/2012/07/air-israel.jpg
2014-02-28T07:08:17 < dongs> Jack3k3: uea
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2014-02-28T07:08:47 < Jack3k3> lol nice
2014-02-28T07:10:47 < Jack3k3> is there a simple way i can just send a pulse via i2s manually so i can scope it and make sure i see it
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2014-02-28T07:13:39 < GargantuaSauce> write to SPIx->DR?
2014-02-28T07:13:46 < dongs> ^
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2014-02-28T07:22:35 < Jack3k3> hmmmph
2014-02-28T07:23:14 < Jack3k3> i added a little code to pulse the SPI2->DR everytime the DMA interrupt triggers and i can scope the pin and get a nice squarewave
2014-02-28T07:23:17 < Jack3k3> so i2s2 works
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2014-02-28T07:34:51 < qyx_> has anyone managed to get stm32w radio working?
2014-02-28T07:37:11 < qyx_> uh on nrnd
2014-02-28T07:41:36 < Jack3k3> man im at my wits end
2014-02-28T07:45:46 < GargantuaSauce> dma is for chumps anyway. poll that shit
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2014-02-28T07:46:08 < emeb_mac> lol
2014-02-28T07:47:38 < Jack3k3> emeb_mac dongs said u got good hourly rates right? haha
2014-02-28T07:48:03 < emeb_mac> Jack3k3: he was trolling. I don't really work for hire on this stuff
2014-02-28T07:49:08 < Jack3k3> haha i know im partially joking as well
2014-02-28T07:49:35 < Jack3k3> but 3 full days of failing is taking its toll :X
2014-02-28T07:53:37 < emeb_mac> yeah - it can be frustrating
2014-02-28T07:53:56 < GargantuaSauce> it's good practice for the years of failing ahead of you too
2014-02-28T07:54:09 < emeb_mac> I've heard, but haven't actually seen for myself that there are issues with DMAing both I2S ports at once...
2014-02-28T07:54:51 < Jack3k3> well im too lazy to try it tonight but i was going to tie the two i2s sda lines together and make sure I can send/receive on them w/ dma
2014-02-28T07:55:06 < Jack3k3> that should at least give me an idea without dealing w/ the codec chip
2014-02-28T07:55:27 < emeb_mac> but you said codec works w/ just playback ?
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2014-02-28T07:57:31 < Jack3k3> yeah but the source for that is slightly different, it uses dma still but it uses normal bufffering instead of circular (if that matters).. anyway its a separate source file
2014-02-28T07:58:12 < Jack3k3> I did use it for testing that all my gpio/i2sinit/dma init code works fine though
2014-02-28T07:59:13 < emeb_mac> good start
2014-02-28T08:01:43 < GargantuaSauce> i might also suggest leaving the code alone (as close to what you think should be functional), adding a clear indicator of functionality, and just dicking with the control registers from the debugger
2014-02-28T08:02:16 < GargantuaSauce> "hey what if i fill this half with F" has filled a gap in my comprehension of the reference manual more than once
2014-02-28T08:02:56 < GargantuaSauce> desperate times and all that
2014-02-28T08:04:06 < Jack3k3> yeah id love to do that but i dont have a debugger :'(
2014-02-28T08:04:20 < Jack3k3> i can only program via the demo flash loader
2014-02-28T08:05:01 < GargantuaSauce> oh you are using the proprietary toolchain
2014-02-28T08:05:05 < GargantuaSauce> what about your FREEDOM??
2014-02-28T08:05:22 < tp> Jack3k3:  not having a easy debugging facility makes any job suck bigtime
2014-02-28T08:05:26 < Jack3k3> well i dont have a jtag, like i onyl have a usb cable
2014-02-28T08:05:27 < GargantuaSauce> yup
2014-02-28T08:05:35 < Jack3k3> so my life is terrible
2014-02-28T08:06:10 < tp> Jack3k3:  do yourself a favor and set up a system that has jtag and openocd or similar, tip the rest in the bin ...
2014-02-28T08:06:38 < tp> it's not expensive, hell the STM32 gear is dirt cheap
2014-02-28T08:07:01 < GargantuaSauce> i am not too clear on what you're dealing with hardware wise but the stlink on the discovery boards can do debugging over swd which i cant imagine isnt broken out on your thing
2014-02-28T08:07:04 < Jack3k3> yeah i was just dumb when buying this and thought i could debug via usb or some stupid shit, i just need to buy a jtag debugger and itll be all good
2014-02-28T08:07:20 < tp> and 10 years ago, it *was* expensive, people had no choice but to go mad trying to debug, without decent debug facilities
2014-02-28T08:07:42 < Jack3k3> GargantuaSauce, huh i didnt know that
2014-02-28T08:08:00 < Jack3k3> ive got an STM32F407VG not exactly the discovery but close
2014-02-28T08:08:01 < tp> GargantuaSauce:  yep, jtag or swd debugging is easy and ccheap now
2014-02-28T08:08:39 < GargantuaSauce> worst case scenario you have to solder a couple of jumpers i guess
2014-02-28T08:08:44 < Jack3k3> http://www.wvshare.com/product/Open407V-C-Standard.htm
2014-02-28T08:08:49 < tp> Jack3k3:  be easy on yourself, just postpone it until you get a decent development environment set up
2014-02-28T08:09:33 < GargantuaSauce> oh yeah there's an swd header, so just get an f0 or f4 disco or whatever and some dupont jumpers, set up oocd/gdb or spend a ridiculous amount of money on keil and you're golden
2014-02-28T08:09:38 < Jack3k3> yeah i missed the red text on the page that says "the open407v-c does NOT integrate any debugging function, a debugger is required"
2014-02-28T08:10:39 < tp> GargantuaSauce:  "or spend a ridiculous amount of money on keil" hahahh
2014-02-28T08:11:12 < GargantuaSauce> ridiculous for the enthusiast i guess
2014-02-28T08:11:20 < GargantuaSauce> protrolls need not apply
2014-02-28T08:11:30 < tp> my little blog on getting SWD going: http://lisglug.org/viewtopic.php?f=34&t=40
2014-02-28T08:11:42 < tp> projerks ?
2014-02-28T08:12:53 < tp> GargantuaSauce:  ever noticed how the 'protrolls' always use pirated versions of their expensive software ?
2014-02-28T08:13:22 < Jack3k3> yah my 407 lacks the little swd stlink chip or whatever that the discovery has so ill just have to buy  jtag debugger
2014-02-28T08:13:31 < GargantuaSauce> or just get a discovery
2014-02-28T08:13:35 < GargantuaSauce> because they are 10 bucks
2014-02-28T08:13:42 < tp> yeah, a F4 disco and you're in business
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2014-02-28T08:14:11 < Jack3k3> yeah i guess but i alreay bought this huge breakout board system :p
2014-02-28T08:14:33 < GargantuaSauce> you can use the stlink on the disco for external debugging
2014-02-28T08:14:41 < tp> and you're determined to use it no matter how mad it makes you ?
2014-02-28T08:15:04 < GargantuaSauce> there are jumpers connecting it to the onboard target mcu, so you just pull that, add jumpers to your target board, and it works
2014-02-28T08:15:11 < tp> GargantuaSauce:  absolutely
2014-02-28T08:15:53 < tp> usb-->Discovery_board-->SWD--->your_board
2014-02-28T08:16:08 < tp> instant live SWD debugging
2014-02-28T08:16:31 < tp> single step thru your code and change chip register values on the flu as you go
2014-02-28T08:16:34 < tp> fly
2014-02-28T08:16:57 < GargantuaSauce> yeah, same thing as the $35 stlink debugger but without the fancy cable
2014-02-28T08:17:00 < GargantuaSauce> and you get another f4!
2014-02-28T08:17:14 < Jack3k3> ah fair enough, ill have to do that then, thanks guys
2014-02-28T08:17:48 < tp> no problemo
2014-02-28T08:18:18 < tp> GargantuaSauce:  you have to keep the flying SWD wires *short* tho or it wont work
2014-02-28T08:18:48 < tp> first time I tried it, my flying leads from disco to disco were too long and it failed miserably
2014-02-28T08:18:48 < GargantuaSauce> that would make sense
2014-02-28T08:19:21 < tp> I shortened them to about 3" and it worked perfectly, must have pretty fast datarates ( I havent scoped it yet)
2014-02-28T08:20:02 < tp> could probably use shielded coax etc
2014-02-28T08:22:53 < GargantuaSauce> the "real" debugger cables get away with just alternating grounds and signals on the ribbon cable so maybe modified idc connectors on one of those would do for slightly longer runs
2014-02-28T08:23:25 < tp> yeah, that would probably work fine too
2014-02-28T08:24:44 < tp> I'm still amazed at how easy jtag and swd have made debugging
2014-02-28T08:25:14 < tp> it was only about 10 years ago I was drooling over AVRSIM and hoping it covered most of what I wanted
2014-02-28T08:26:21 < GargantuaSauce> i really like the fancy board-level testing jtag can do with programmable logic, makes so much more sense than covering a board in test points and having a big expensive jig
2014-02-28T08:26:23 < tp> anyone here old enough to remember the Avocet simulators ?
2014-02-28T08:27:20 < tp> GargantuaSauce:  Ive never used JTAG for board testing, but it makes perfect sense, those 'bed of nails' testers ate expensive and a hassle
2014-02-28T08:27:36 < tp> ate = are
2014-02-28T08:31:22 < PaulFertser> tp: your first openocd command can be shortened to "openocd -f board/stm32f4discovery.cfg"
2014-02-28T08:32:05 < PaulFertser> tp: you do not need "poll" at all, it's on by default.
2014-02-28T08:32:17 < PaulFertser> Neither you really need manual "flash probe".
2014-02-28T08:32:51 < PaulFertser> tp: I recommend using elf files for flash write_image. Another way to flash is to use "load" from inside gdb.
2014-02-28T08:34:18 < PaulFertser> (and it's way easier, you just rebuild your project with "make" (you can type "make" in gdb prompt even), then do "load", gdb auto-reloads the changed elf and flashes the target.
2014-02-28T08:35:44 < PaulFertser> tp: btw, current OpenOCD version (git HEAD) auto-enables stlink if libusb is available on the system.
2014-02-28T08:36:20 < tp> PaulFertser:  nice
2014-02-28T08:36:56 < tp> PaulFertser:  yeah I know it can be shortened, I was trying to show the reader what was going on, and where config files are located
2014-02-28T08:37:07 < PaulFertser> Jack3k3: do you have a raspberrypi probably?
2014-02-28T08:37:50 < tp> PaulFertser:  you can do SWD from a Rpi ?
2014-02-28T08:37:56 < PaulFertser> tp: why? sudo make install takes care of that on its own, the users shouldn't care. But following your instructions one can get a false impression a full path is needed.
2014-02-28T08:38:10 < PaulFertser> tp: not yet, but hopefully quite soon.
2014-02-28T08:38:16 < PaulFertser> tp: but you can already do JTAG
2014-02-28T08:38:26 < tp> Ill amend a note explaining a full path isnt needed
2014-02-28T08:38:50 < PaulFertser> tp: the stm32f4disco board config already sources the right stlink interface config.
2014-02-28T08:38:58 < tp> JTAG is good, save a few dollars not buying a JTAG dongle
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2014-02-28T08:48:43 < Jack3k3> no raspberrypi but thats cool it can do that
2014-02-28T08:49:56 < PaulFertser> Jack3k3: do you probably have another stm32f103 board with usb? You can flash it with blackmagicprobe software then.
2014-02-28T08:50:46 < PaulFertser> Jack3k3: if you have an old-style motherboard with the traditional PC parallel port you can use it for jtagging too.
2014-02-28T08:51:11 < Jack3k3> nah ive got some other  LPC21xx devboard and some ti msp430 devboard, thats about it
2014-02-28T08:53:10 < GargantuaSauce> holy crap why did i never clue into the fact that you can make straight from within gdb
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2014-02-28T08:57:03 < tp> PaulFertser:  or use a STMF4disco to load ST-LinkV2 onto a stm32VL (ST-LinkV1) disco via SWD, thats what I did
2014-02-28T08:57:49 < tp> <PaulFertser> (and it's way easier, you just rebuild your project with "make" (you can type "make" in gdb prompt even), then do "load", gdb auto-reloads the changed elf and flashes the target. ... thanks for the tip!
2014-02-28T08:57:50 < PaulFertser> tp: yes, but you had a disco board already.
2014-02-28T08:58:22 < tp> Had to, the VL was total crap with ST-LinkV1
2014-02-28T09:00:26 < madist> tp: how does that work ? doesn't it check for v1 or v2 ?
2014-02-28T09:01:07 < PaulFertser> tp: welcome. I flashed my stlinkv1 on vldisco with blackmagicprobe, it has an additional aux UART exposed with CDC ACM and also doesn't require any special software at all. I can get data from ds18x20's straight via swd thanks to "arm semihosting", running just gdb on any host I have handy around, without openocd etc.
2014-02-28T09:01:45 < tp> $US 70.00 for the blackmagic probe ? a F4 Disco is way cheaper
2014-02-28T09:02:07 < PaulFertser> tp: no, I flashed bmp firmware into stlinkv1
2014-02-28T09:02:25 < tp> madist ? the DiscoVL will do whatever it's told by SWD
2014-02-28T09:02:42 < tp> ahh, PaulFertser sorry, I misunderstood
2014-02-28T09:03:13 < madist> tp: the v2 firmware is not available - its encrypted and embedded in the upgrade software. and the upgrade sw doesn't upgrade v1 boards.
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2014-02-28T09:03:25 < tp> madist:  I found the ST-LinkV2 image somewhere online and just used OpenOCD and SWD to install it on the board
2014-02-28T09:03:28 < PaulFertser> madist: it's dumped quite some time ago, so it is available.
2014-02-28T09:03:32 < madist> where ?
2014-02-28T09:05:11 < PaulFertser> madist: somewhere inside this "thread": http://forum.easyelectronics.ru/viewtopic.php?t=6620
2014-02-28T09:07:28 < madist> wtf. STlink v3 ? http://www.aliexpress.com/item/ST-LINK3-STLINK3-ST-LINK-III-ST-LINKIII-stm32-stm8-download-emulator/879486583.html
2014-02-28T09:09:17 < tp> I havent looked into this, but stlink isnt needed for SWD is it ? Cant one make a simple USB ->SWD or JTAG to SWD dongle ?
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2014-02-28T09:12:57 < tp> I have a Olimex USB to JTAG dongle, (it was what I used to make my first STMF4 Forth chip), and I also have a small Olimex board that plugs into the JTAG dongle and is supposed to do SWD, but there is no doc for it
2014-02-28T09:14:23 < PaulFertser> tp: in fact you can use that olimex jtag->swd adapter already with http://openocd.zylin.com/#/c/1996/1
2014-02-28T09:16:44 < tp> PaulFertser:  nice, all I need is to know what pins on the swd adaptor to use as it has 20 pin IDC's on each end, with one plugging into the USB/Jtag dongle
2014-02-28T09:17:08 < PaulFertser> tp: olimex has schematics on their product page.
2014-02-28T09:17:24 < PaulFertser> tp: and also you'd need to provide custom values for that adapter, the support is still wip.
2014-02-28T09:17:24 < tp> hmm I looked, Ill look again
2014-02-28T09:17:42 < tp> thanks for the help, I don't want to be a pain!
2014-02-28T09:17:50 < tp> ahh
2014-02-28T09:18:14 < tp> may be easier to just use the discoVL with V2 ?
2014-02-28T09:18:28 < tp> the dongles will keep until theyre sorted
2014-02-28T09:18:38 < PaulFertser> tp: indeed
2014-02-28T09:19:21 < tp> PaulFertser:  you're right into this stuff I see :)
2014-02-28T09:19:42 < tp> it's awesome to have tips from someone with a clue
2014-02-28T09:19:51 < PaulFertser> tp: welcome :)
2014-02-28T09:20:04 < tp> It took me at least a week of trying old howtos etc to get my SWD working
2014-02-28T09:20:25 < tp> I *should* have just built the latest packages and it would have worked straight away
2014-02-28T09:20:41 < tp> as thats what I did in the end
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2014-02-28T09:24:07 < PaulFertser> tp: README and the official OpenOCD manual should be way better than any howto.
2014-02-28T09:24:59 < tp> agreed, thats why I added "Written: 18 July 2013. If you're reading this later than July 2014, it will be hopelessly out of date." right at the front of my howto
2014-02-28T09:25:21 < tp> Ill put the official OpenOCD links at the top
2014-02-28T09:28:46 < PaulFertser> Thank you
2014-02-28T09:29:21 < tp> OpenOCD really seem to have it together, their project is awesome
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2014-02-28T11:09:23 < dongs> zyp: sent email to stonerLA, still no reply. wondering why. maybe cuz i emailed to tech people.
2014-02-28T11:10:24 < zyp> heh
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2014-02-28T11:19:18 < dongs> http://www.wired.co.uk/news/archive/2014-02/27/nintendo-wi-fi-connection waaaaaaaaaaaaaaaaaat
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2014-02-28T12:02:45 < Blok> Any triac gurus here? :)
2014-02-28T12:03:26 < tp> triac as in dual polarity scr ?
2014-02-28T12:04:37 < Blok> tp: I guess that you can say that.
2014-02-28T12:05:16 < tp> I've used them, but I'm not a triac guru
2014-02-28T12:05:53 < Blok> I have problem getting a dimmer circuit to work properly. Is there a reason why ACST1210-7 would be a bad candidate for incandescent light bulb dimming? DS: http://alturl.com/qzumr
2014-02-28T12:06:11 < tp> made for switching ac, one turns them on like a scr I think
2014-02-28T12:07:18 < tp> what does the dimmer do ?
2014-02-28T12:07:35 < tp> ie how is it failing to work properly ?
2014-02-28T12:12:14 < Blok> I send a pulse to the date of about 10ms after I detect a zero cross. I vary how long after ZC the pulse is sent with the intention to very the dimming. However, with a pulse of 10 ms the triac does not trigger.
2014-02-28T12:12:20 < Blok> date = gate
2014-02-28T12:12:34 < Blok> or s/date/gate/ :)
2014-02-28T12:14:10 < tp> I note the triac in question is not very sensitive, do you have enough gate current ?
2014-02-28T12:14:29 < tp> it needs 25/35 mA to trigger ?
2014-02-28T12:14:56 < Blok> I trigger it using a an optocoupler
2014-02-28T12:14:58 < tp> normally one butterfly fart is enough to triger most small SCR's
2014-02-28T12:15:20 < Blok> (with plenty of amps)
2014-02-28T12:15:42 < Blok> I tried as a desperate attemp to raise the current without a change
2014-02-28T12:15:43 < tp> gtg, Id make sure you have enough gate current for triggering
2014-02-28T12:15:57 < Blok> Thanks for the help!
2014-02-28T12:16:12 < tp> is the optocoupler capabe of that current ?
2014-02-28T12:16:17 < tp> capable
2014-02-28T12:16:46 < tp> perhaps use the opto to trigger a external transistor as shown in the datasheet ?
2014-02-28T12:16:55 < tp> in off, good luck
2014-02-28T12:16:58 < tp> Im off
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2014-02-28T13:46:10 < Robint91> sup bitches
2014-02-28T13:46:37 < Robint91> does anyone know the pricing of seeeds new premium services?
2014-02-28T13:47:26 < jpa-> what do they have now?
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2014-02-28T14:00:22 < zyp> jpa-, up to 8 layers
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2014-02-28T14:13:46 < dongs> 'premium'?
2014-02-28T14:14:59 < zyp> yeah, it means you pay them more money
2014-02-28T14:15:22 < dongs> and wait 2 weeks?
2014-02-28T14:15:29 < dongs> when i can pay no money and get shit in 2 days
2014-02-28T14:15:35 < dongs> just ordered some 4 layer panels on a free spot
2014-02-28T14:15:46 < dongs> http://i.imgur.com/HcTshvM.png
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2014-02-28T14:44:14 < englishman> why dont you make this service available to anyone dongs
2014-02-28T14:44:16 < englishman> like oshpark
2014-02-28T14:44:34 < englishman> that guy does nothing, shit auto-checks designrules and panelizes
2014-02-28T14:44:38 < englishman> and emails gerbs
2014-02-28T14:44:44 < englishman> then he breaks apart boards and mails
2014-02-28T14:45:21 < englishman> yours would be faster too, his is 12-day
2014-02-28T14:45:37 < englishman> only then can you say, "no excuses"
2014-02-28T14:45:57 < englishman> because that panel there would cost me $600+ for 2day and it would not be red
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2014-02-28T14:58:12 < englishman> if you do that i will be 1st customer
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2014-02-28T15:00:58 < dongs> englishman: i do, but I usually have my own shit to add.
2014-02-28T15:01:05 < dongs> sometimes i ask in here when I have free spots.
2014-02-28T15:01:08 < dongs> zyp got some stuff like tehat before.
2014-02-28T15:01:37 < dongs> and someone else
2014-02-28T15:01:39 < dongs> maybe tectu
2014-02-28T15:01:43 < dongs> tho i never shipped his shit
2014-02-28T15:01:49 < dongs> cuz hes a fgt
2014-02-28T15:02:08 < englishman> but like, as a service
2014-02-28T15:02:11 < englishman> ordering more panelz
2014-02-28T15:02:17 < englishman> not just freespaces
2014-02-28T15:02:24 < englishman> to makers and stuff which i know you love
2014-02-28T15:02:32 < dongs> that means work and when theres no orders theres no point to order a panel
2014-02-28T15:02:48 < dongs> so people would submit shit and wait for weeks
2014-02-28T15:02:50 < dongs> for it to fill up
2014-02-28T15:03:00 < dongs> and i'd ha ve to deal with all the faggots submitting broken ass eagle files
2014-02-28T15:03:17 < englishman> thats what the online autodrc is for otherwise he would be swamped
2014-02-28T15:03:49 < englishman> yeah when he started it was panels ever 2 weeks, then every week, now he submits orders every day
2014-02-28T15:04:05 < englishman> even 4layer orders are weekly
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2014-02-28T15:30:16 < Laurenceb> http://habrahabr.ru/post/213749/
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2014-02-28T15:51:50 < Claude> Laurenceb, despite the fact the site is somehow encryptet in rot13 or klingon , nice find!
2014-02-28T15:52:51 < nine-tails> Laurenceb: ??? ????? ????????? ?? ???? ?????? ???????????????
2014-02-28T15:53:09 < Laurenceb> lol windoze
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2014-02-28T15:59:21 < qyx_> wut ????????
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2014-02-28T16:00:01 < Steffanx> laser range toy Laurenceb?
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2014-02-28T16:28:01 < dongs> 17:35 <@MagicalTux> molecular, I blocked ~2000 accounts created most likely for the purpose of killing bitcoin on 9/11
2014-02-28T16:32:19 < englishman> context?
2014-02-28T16:36:18 < Steffanx> there is no context
2014-02-28T16:38:49 < Laurenceb> http://static.fjcdn.com/pictures/Nyan_8c3d7b_2485383.jpg
2014-02-28T16:40:56 < nine-tails> washt that projected to withstand 10 planes
2014-02-28T16:41:38 < nine-tails> i mean 10 nyan cats
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2014-02-28T20:20:58 < Jack3k3> hey guys, i have the MCLK enabled on my i2s, and according to ref it says mclk freq = fs*256
2014-02-28T20:21:12 < Jack3k3> my fs = 48000, so mclk freq = 12.28MHZ
2014-02-28T20:21:53 < Jack3k3> i scoped the mclk, and by my guess its around 10-12MHz but the waveform looks kinda shitty
2014-02-28T20:23:51 < Jack3k3> kinda like this maybe a bit shittier http://cdn.head-fi.org/3/3a/350x700px-LL-3ac93c38_OR5_MCLK_CAT7_75ohmTernRJ45_zps949dc90c.jpeg
2014-02-28T20:23:52 < emeb> depends heavily on the quality of your scope
2014-02-28T20:24:17 < Jack3k3> yea ive got an old 50Mhz tek but its pretty damn old heh
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2014-02-28T20:30:33 < Jack3k3> emeb, not sure if you had this choice on your codec chip, but for the chip clock I can either use MCLK to derive the various adc/dac clocks from that or the WSPLL clock derived from the WSI line
2014-02-28T20:30:42 < Jack3k3> im not sure if there are any main advantages to one
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2014-02-28T20:42:09 < emeb> Jack3k3: interesting - that's good to know. Thorn was asking about that the other day.
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2014-02-28T20:51:01 < Jack3k3> emeb yeah I ended up switching over the MCLK and i THINK something might be happening... i'm still not getting audio, but scoping both i2s_sd pins shows activity on themm
2014-02-28T20:51:27 < emeb> good start
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2014-02-28T21:22:48 < Jack3k3> the audio is stored in a signed integer buffer, so would rx_buffer[0] correspond to max adc value at 32767 and the min value at -32767
2014-02-28T21:23:01 < Jack3k3> i.e. if apply 0v to the adc, theoretically the value should be around -32767
2014-02-28T21:27:00 < zyp> assuming there's not a DC block filter in front of the ADC then yes
2014-02-28T21:27:22 < Jack3k3> yea i think thats disabled
2014-02-28T21:28:54 < Jack3k3> hmm
2014-02-28T21:32:49 < karlp> Jack3k3: not sure if your 50meg rigol really counts as "old" :)
2014-02-28T21:33:51 < Jack3k3> oh its not a rigol
2014-02-28T21:33:52 < Jack3k3> its a tek
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2014-02-28T21:36:15 < Jack3k3> tek 2225 to be exact
2014-02-28T21:38:28 < Jack3k3> so another dumb q, im trying to print to an lcd , i have a text function that requires an uin8_t string, i'm trying to print the numeric value of a int16_t variable
2014-02-28T21:38:42 < Jack3k3> i cant remember the name of the function that can conver this to a string
2014-02-28T21:40:40 < karlp> oh, your "screenshot" wasn't your scope? just a similar looking waveform?
2014-02-28T21:40:57 < qyx_> sprintf
2014-02-28T21:40:58 < karlp> sprintf?
2014-02-28T21:41:02 < karlp> yeah, qhat he said
2014-02-28T21:41:03 < qyx_> these are beaky-like questions
2014-02-28T21:41:12 < Jack3k3> karlp yep :p
2014-02-28T21:41:25 < Jack3k3> ah yes thats it thanks
2014-02-28T21:43:22 < gnomad> Also, is an "old" Tek scope one from the 1980s or one from the 1950s?
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2014-02-28T21:45:27 < Jack3k3> haha I don't know I just felt old since it seems everyone has fany all digital Ghz range scopes now
2014-02-28T21:45:33 < Jack3k3> fancy*
2014-02-28T21:53:28 < gnomad> none of that matters if you don't need it to view the signal in question.
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2014-02-28T21:59:53 < Jack3k3> humm so the rx_buffer from the adc seems to be just staying at -32458
2014-02-28T22:00:10 < Jack3k3> even if i change the voltage applied to it...
2014-02-28T22:05:46 < Jack3k3> yea the buffer seems to be gibberish, granted im only reading the first value rx_buffer[0] but it stays constant no matter what so somethings still off
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2014-02-28T22:08:34 < beaky> hell
2014-02-28T22:08:37 < beaky> hello*
2014-02-28T22:09:01 < Steffanx> lol \o/
2014-02-28T22:09:23 < beaky> so I got my stm32f3 smps working! :D but theres some problems with the dc-dc converter circuitry
2014-02-28T22:09:45 < beaky> so im begging ##electronics for insight on why my hi-side nmos isn't switching properly
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2014-02-28T22:14:29 < beaky> seems stm32f3 is the right tool for the job :D
2014-02-28T22:14:49 < beaky> all the analog frontend is right inside it
2014-02-28T22:15:16 < beaky> all the digital power control magic is handled by software as well
2014-02-28T22:16:09 < beaky> and im using wiznet as ethernet since stm32f3 lacks Ethernet MAC compred to stm32f4
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2014-02-28T23:56:17 < Jack3k3> emeb, in your code, if i was to setup a loop to continuously assign some number to the rx_buffer/tx_buffer would this be the data moved around by the DMA?
2014-02-28T23:56:28 < Jack3k3> (the loop would be in the main function while loop)
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--- Log closed Sat Mar 01 00:00:45 2014