--- Log opened Sat Jun 01 00:00:43 2013
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2013-06-01T01:05:57 < Tectu_> is dongs online or sleeping?
2013-06-01T01:08:45 < Simon--> probably both
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2013-06-01T01:26:29 < Laurenceb__> the lack of trolling would seem to indicate he is asleep
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2013-06-01T01:44:36 < zyp> 7:44 in the morning over there now
2013-06-01T01:44:50 <+Steffanx> dongscontrol it is Laurenceb__
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2013-06-01T03:07:32 < mtbg> hi
2013-06-01T03:08:30 < mtbg> zyp: have you used internal DMA engine in the otg hs phy in f4?
2013-06-01T03:09:40 < mtbg> with AHB clocked at 168MHz, the maximum bandwidth is ~35MB/s
2013-06-01T03:09:51 < mtbg> at a single bulk endpoint
2013-06-01T03:10:17 < zyp> with DMA?
2013-06-01T03:10:22 < mtbg> which is somewhat lower than what I was able to do with just copying data in a loop
2013-06-01T03:10:23 < mtbg> yep
2013-06-01T03:10:34 < zyp> I've only used slave mode
2013-06-01T03:10:58 < zyp> I haven't done much in the way of HS yet, so I haven't thought that hard about it
2013-06-01T03:12:10 < zyp> also, theoretical max for HS is around 53 MB/s
2013-06-01T03:12:55 < mtbg> I once set up a DMA peripheral (not the DMA engine built in to otg hs) to copy to DFIFO as memory-to-memory xfer
2013-06-01T03:13:12 < mtbg> it worked, but was quite unpredictable
2013-06-01T03:13:17 < zyp> heh
2013-06-01T03:13:43 < mtbg> and it did about 41MB/s
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2013-06-01T03:14:26 < zyp> did you write your usb code from scratch?
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2013-06-01T03:14:36 < mtbg> yes
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2013-06-01T03:15:52 < zyp> how do you schedule transfers and manage fifos? can you have several packets in the fifo at the same time?
2013-06-01T03:17:58 < mtbg> having several packets in the fifo is a feature of the usb peripheral, and yes, I use it
2013-06-01T03:18:18 < mtbg> I set up a transfer when there is some data available, in my case it was DCMI interface
2013-06-01T03:18:20 < mtbg> but
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2013-06-01T03:18:45 < mtbg> for bench marks, I just used sent sram content
2013-06-01T03:18:53 < mtbg> s/sent//
2013-06-01T03:19:12 < zyp> I assume you don't have access to an analyzer?
2013-06-01T03:19:44 < mtbg> just logic analyzer, but it won't decode USB bus
2013-06-01T03:20:28 < mtbg> I can hook it up to ULPI though and see the bytes
2013-06-01T03:21:21 < zyp> I was just thinking about checking whether it's the host not asking fast enough or the device not answering fast enough
2013-06-01T03:22:36 < mtbg> maybe the OS limits bandwidth for a single ep
2013-06-01T03:22:55 < mtbg> I will set up 2 eps and then benchmark the bus
2013-06-01T03:23:15 < zyp> http://bin.jvnv.net/f/5pyzn.png <- an analyzer would give you a trace like this
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2013-06-01T03:23:41 < zyp> the POLL-number is how many times the host asked and got a NAK before the device was ready to send data
2013-06-01T03:23:57 < mtbg> how much was that analyzer?
2013-06-01T03:24:11 < zyp> it's a beagle 480, I'm just borrowing it
2013-06-01T03:25:31 < zyp> that particular trace is from my sd card test, it causes a pause for every eight packet to read a new block from the sd card
2013-06-01T03:26:04 < mtbg> 1400 usd
2013-06-01T03:26:43 < zyp> unfortunately good tools don't come cheap
2013-06-01T03:28:25 < mtbg> btw the sdcard was on spi or on sdio?
2013-06-01T03:28:42 < zyp> sdio, but it was a slow card
2013-06-01T03:29:58 < zyp> http://bin.jvnv.net/f/e16v1.png <- sdio trace from a write operation
2013-06-01T03:30:55 < zyp> note the burst of data which is the actual transfer to the card, and then the busy period with D0 low
2013-06-01T03:31:13 < zyp> and then the gap in the clock is the usb communication
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2013-06-01T03:32:42 < mtbg> why gap? the clock was due to polling the card for being ready for a next burst?
2013-06-01T03:33:14 < zyp> the clock is stopped when the card is not active
2013-06-01T03:33:25 < zyp> it's all hardware controlled
2013-06-01T03:34:17 < zyp> I just write the data and then wait for the sdio peripheral to tell me it's done
2013-06-01T03:34:35 < zyp> which it is when D0 goes high again
2013-06-01T03:35:04 < mtbg> so the peripheral itself polls the card
2013-06-01T03:35:39 < zyp> you don't have to poll the card, you just wait for D0 to go high
2013-06-01T03:35:51 < zyp> but the card needs to be clocked while active
2013-06-01T03:37:04 < mtbg> the transmission clock is also the main clock source for the sd card?
2013-06-01T03:37:53 < zyp> maybe for some, but I would imagine most modern cards to have their own
2013-06-01T03:38:35 < zyp> anyway, I'm heading to bed, have a good night
2013-06-01T03:39:19 < zyp> oh, and if you would like me to test your code with the analyzer I could do that if it would run on one of my boards
2013-06-01T03:40:03 < zyp> but that's a discussion for another day, just talk to me when I'm around if you're interested
2013-06-01T03:41:23 < mtbg> ok, thanks
2013-06-01T03:42:00 < mtbg> I appreciate that you care
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2013-06-01T03:42:21 < mtbg> I will just do a benchmark with two EPs first
2013-06-01T03:42:26 < mtbg> and see if it helps
2013-06-01T03:43:12 < mtbg> well
2013-06-01T03:44:03 < mtbg> the 35MB/s bandwidth isn't that bad, but I seen better rates done by this hardware already
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2013-06-01T07:33:47 < dongs> where is the fucking table how many comparators etca re in each F303 package
2013-06-01T07:34:57 < dongs> found
2013-06-01T07:38:14 < R2COM> I knew it would be your message
2013-06-01T07:38:21 < R2COM> before even looking at channel
2013-06-01T07:45:58 < PaulFertser> dongs: are you a former Soviet engineer by any chance?
2013-06-01T07:47:05 < R2COM> HAHA!!!
2013-06-01T07:49:02 < R2COM> my grandpa was
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2013-06-01T08:06:01 < dongs> whats a sovient engineer
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2013-06-01T08:22:12 < R2COM> engineers will know..
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2013-06-01T15:12:50 < karlp> man, 32bit timers instead of having to chain them would be nice.
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2013-06-01T15:26:14 < zyp> you mean like f4 has?
2013-06-01T15:27:29 < karlp> yeah,
2013-06-01T15:27:36 < karlp> I really want the rtc wakeup to be 32bit,
2013-06-01T15:28:26 < karlp> I've got some options, not sure the best way of doing it right now.
2013-06-01T15:28:47 < karlp> thinking of having the rtc wakeup always on, and it's isr updating some higher bits for me,
2013-06-01T15:29:21 < karlp> and if a task wants to set a specific time, I can just wait for x whole rtc wakeups, then set one specific one for the remainder
2013-06-01T15:29:43 <+Steffanx> Why that do something like that anyway? Make it 16 bit when 32bit is easier most of the time?
2013-06-01T15:29:44 < karlp> a little bit more fiddling than just setting the next wakeup at x, but reasonable,
2013-06-01T15:29:52 <+Steffanx> Shouldnt make it that more complex ( in hw ) should it?
2013-06-01T15:30:09 < karlp> I suppose it's from reusing older periphal blocks
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2013-06-01T15:30:33 < karlp> the other way is using timer10 which can be driven from LSE, and chainng a counter downstream from it.
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2013-06-01T16:12:04 < bairdy> Playing a Solitare game that's written in Python (PySol) .. the nice thing about it is editing the python scripts so I can cheat. :)
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2013-06-01T16:57:22 < Laurenceb_> wtf sparkfun
2013-06-01T16:57:30 < Laurenceb_> their ufl connector is clearly wrong
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2013-06-01T17:13:35 <+Steffanx> What what Laurenceb_ ?
2013-06-01T17:48:25 < Laurenceb_> the µFL connector in the library
2013-06-01T17:48:31 < Laurenceb_> ground is in thewrong place
2013-06-01T17:55:24 <+Steffanx> That's the 'fun' part of sparkfun
2013-06-01T17:55:31 <+Steffanx> Otherwise it would've been SparkCopyWithoutChecking
2013-06-01T17:55:39 <+Steffanx> AndHaveFunAfterwards
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2013-06-01T22:46:12 < upgrdman> did my first paste/bake pcb. turned out decent. http://www.farrellf.com/projects/hardware/2013-06-01_PCB_Design_and_Etching/step11.jpg
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2013-06-01T22:52:53 <+Steffanx> :)
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2013-06-01T23:00:30 < Ranewen> upgrdman, is it opensourced ?
2013-06-01T23:00:58 < upgrdman> i guess
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2013-06-01T23:01:04 < karlp> opensource what? bring out a qfp?
2013-06-01T23:01:05 < upgrdman> you want a pdf?
2013-06-01T23:01:27 < Ranewen> karlp, well i know its just a brakeoutboard, but i need one to start
2013-06-01T23:01:52 < Ranewen> so if i can grab a free pcb layout, id be grateful
2013-06-01T23:03:36 < gxti> why not a f0discovery or something
2013-06-01T23:04:13 < Ranewen> i will get f4 when i get my ass into university...
2013-06-01T23:04:37 < upgrdman> http://www.farrellf.com/projects/hardware/2013-06-01_PCB_Design_and_Etching/pcb.pdf
2013-06-01T23:04:49 < Ranewen> which will be in a month
2013-06-01T23:05:02 < upgrdman> gxti: my laptop has a metal case. its too tempting to short out the pin headers of my discov board
2013-06-01T23:06:05 < gxti> that was to Ranewen
2013-06-01T23:06:18 < upgrdman> o ok
2013-06-01T23:06:18 < gxti> home etch as a way to 'get started' is a mistake
2013-06-01T23:06:37 < gxti> upgrdman: looks good
2013-06-01T23:06:58 < Ranewen> nice website
2013-06-01T23:07:03 < upgrdman> thanks
2013-06-01T23:07:19 < upgrdman> i need to redo the CSS and make it less ugly :) but im too lazy
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2013-06-01T23:12:12 < upgrdman> now i need to layout a pcb to breakout some LGAs. :/
2013-06-01T23:13:01 < Ranewen> where u get header files ?
2013-06-01T23:16:08 < upgrdman> what header files? like stm32f0xx.h?
2013-06-01T23:16:36 < Ranewen> y
2013-06-01T23:17:20 < upgrdman> if you use windows, just download the firmware from st's web site
2013-06-01T23:17:30 < upgrdman> if you use linux, like i do, then: http://www.farrellf.com/projects/hardware/2012-10-28_Saving_Some_Money_with_the_STM32F0/
2013-06-01T23:19:07 < Ranewen> il be on windows
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2013-06-02T04:33:23 < flop> does anyone know if I can mix spi1 clock from one port with spi1 mosi of another port?
2013-06-02T04:35:18 < zyp> I would know, but I'm not sure what you're asking about
2013-06-02T04:35:27 < zyp> first of all, which chip family are you working with?
2013-06-02T04:35:52 < flop> stm32f4
2013-06-02T04:36:25 < zyp> and with port you mean like GPIOA and GPIOB?
2013-06-02T04:36:32 < flop> yes
2013-06-02T04:36:41 < qyx_> if they both belongs to spi1, yes
2013-06-02T04:36:42 < zyp> then the answer is yes
2013-06-02T04:37:07 < zyp> any SPI1_SCK can be used together with any SPI1_MOSI regardless of which ports they are on
2013-06-02T04:37:37 < flop> ah cool
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2013-06-02T04:59:18 < talsit> you know how branching in fast code is supposed to be slow on certain architectures due to pipeline stall and all that
2013-06-02T04:59:23 < talsit> what about on the stm32f4?
2013-06-02T04:59:51 < talsit> as in, the difference between these two lines of code:
2013-06-02T05:00:26 < talsit> uint8_t a |= (bit_set & 0x01) << 7;
2013-06-02T05:00:38 < talsit> if (bit_set) a |= 0x80;
2013-06-02T05:00:52 < talsit> (assume a comes from elsewhere)
2013-06-02T05:10:23 < zyp> hmm
2013-06-02T05:10:52 < zyp> I tested your expressions, I'm a bit surprised to see that the compiler actually emits a branch there
2013-06-02T05:11:04 < talsit> for the shift?
2013-06-02T05:11:07 < talsit> oh
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2013-06-02T05:11:19 < zyp> no, in the if-case
2013-06-02T05:11:21 < zyp> also ternary
2013-06-02T05:11:31 < zyp> http://paste.jvnv.net/view/UYnWd
2013-06-02T05:12:43 < talsit> why wouldn't it emit a branch?
2013-06-02T05:13:41 < talsit> and the question was really not about the disassembly, since, though i cannot reasily read asm, i can kinda guess what it's doing
2013-06-02T05:14:04 < talsit> is there somehting like a pipeline stall with branching on an stm32?
2013-06-02T05:14:21 < talsit> i don't know enough about the architecture to know
2013-06-02T05:14:35 < zyp> there is a pipeline, but IIRC it's pretty short
2013-06-02T05:15:22 < talsit> so basically, make the code more readable in instead of doing tricks unless it's absolutely critical, right?
2013-06-02T05:15:57 < zyp> that's the golden rule everywhere
2013-06-02T05:16:15 < qyx_> related http://graphics.stanford.edu/~seander/bithacks.html
2013-06-02T05:16:45 < flop> Is there an easy way to know at what frequency the core is running at?
2013-06-02T05:16:51 < qyx_> to make code more write-only :)
2013-06-02T05:17:25 < talsit> i did some stuff on the ps3's cell, and there it was sometimes a lot cheaper to calculate 2 matrix multiplications, store then in Mat44 m[2]; and then return one by adding the contitional to the address
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2013-06-02T05:18:33 < zyp> talsit, don't worry about hand-optimizing code until you are able to profile it to identify the areas that would benefit from it
2013-06-02T05:19:32 < talsit> zyp: no, i usually don't, but if there are things that are not that different, but do make a difference, i'd like to know about it, which was the original purpose of my question
2013-06-02T05:21:19  * talsit now has to figure how to unpack bitfields in python ... *sigh*
2013-06-02T05:21:19 < zyp> in this case I'd bet that either may be faster depending on what the code around it does, because that impacts what the compiler can optimize it into
2013-06-02T05:21:46 < talsit> zyp: yep, that makes sense too
2013-06-02T05:22:39 < zyp> http://docs.python.org/2/library/ctypes.html#bit-fields-in-structures-and-unions <- seems to be some support for bitfields in ctypes
2013-06-02T05:24:07 < talsit> i'm reading linear timecode, which has up to 6 different variables per uint16 :)
2013-06-02T05:24:10 < zyp> https://code.google.com/p/python-bitstring/ <- this might be interesting otherwise
2013-06-02T05:24:40 < talsit> oh cool!
2013-06-02T05:24:42 < talsit> thanks
2013-06-02T05:24:42 < gxti> is it really that difficult to just and with a mask
2013-06-02T05:25:07 < talsit> no, but i was hoping for something slightly more straightforward, but it's cool
2013-06-02T05:25:38 < zyp> gxti, depends on what you are doing
2013-06-02T05:26:39 < zyp> ever tried concatenating bit-arrays in VHDL/verilog? you tend to miss that possibility when you go back to byte-oriented languages afterwards :p
2013-06-02T05:28:57 < gxti> python does arbitrarily long integers natively so you can at least follow the mathy approach without worrying about word size
2013-06-02T05:29:08 < gxti> and if that doesn't suit then you can just accumulate 1s and 0s into an array and convert later
2013-06-02T05:29:20 < gxti> but if that library helps then go for it
2013-06-02T05:29:30 < zyp> true
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2013-06-02T07:01:21 < flop> is tim1 and tim8 dependent on hsi only on the stm32?
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2013-06-02T07:03:57 < dongs> ?
2013-06-02T07:04:06 < dongs> no, they run off sysclk?
2013-06-02T07:04:13 < dongs> or rather AHB_clk or wahtever
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2013-06-02T07:24:37 < flop> when I change to hse, my tim8 does not work
2013-06-02T07:25:26 < flop> would there be a particular reason?
2013-06-02T07:26:28 < flop> I change to hse by setting RCC_CFGR  SW from 0x0 to 0x1
2013-06-02T07:26:49 < dongs> yea youre definitely doing something wrong
2013-06-02T07:26:56 < dongs> i have a board with hse where both are used
2013-06-02T07:26:57 < dongs> and they work fine
2013-06-02T07:27:00 < dongs> no special changes.
2013-06-02T07:27:11 < gxti> flop: what is the HSE frequency?
2013-06-02T07:27:22 < flop> I'm using the stm32f4 discovery board
2013-06-02T07:27:24 < dongs> i doubt that matters
2013-06-02T07:27:27 < flop> hse is 8MHz
2013-06-02T07:27:33 < gxti> it does if something is out of spec
2013-06-02T07:27:35 < gxti> but no
2013-06-02T07:27:36 < dongs> so 8mhz
2013-06-02T07:27:50 < flop> ah
2013-06-02T07:28:06 < flop> maybe because I changed the ahb frequency?
2013-06-02T07:28:06 < dongs> how you determine it "stops working"
2013-06-02T07:28:43 < flop> because in IAR the tim8 registers are freyed out
2013-06-02T07:28:46 < flop> greyed
2013-06-02T07:29:38 < flop> and the bits inputs are replaced by ------------
2013-06-02T07:30:02 < dongs> what did you cahnge a hb to?
2013-06-02T07:31:09 < flop> I divided by 16 I think
2013-06-02T07:31:32 < flop> but I don't see how that will affect the tim8
2013-06-02T07:31:53 < gxti> when faced with something "just not working" you should try to simplify as much as possible
2013-06-02T07:32:30 < dongs> yeah , like, make sure its clock is actually on and shit.
2013-06-02T07:33:47 < flop> mmm, I guess that was it... I changed ahb prescaler to lower division and it works.  Weird
2013-06-02T07:59:38 < dongs> http://i.imgur.com/d38mRmR.png
2013-06-02T08:02:44 < talsit> dongs: you finally got it!!
2013-06-02T08:04:13 < flop> lol
2013-06-02T08:04:19 < flop> I want a degree too
2013-06-02T08:08:53 < dongs> http://i.minus.com/ikGD0Pm1gts08.gif
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2013-06-02T09:08:05 < emeb_mac> cats - always getting into trubs.
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2013-06-02T09:32:46 < R2COM> http://i.imgur.com/SBNwUzU.png
2013-06-02T09:32:46 < R2COM> programmable attenuator
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2013-06-02T09:35:01 < dongs> nice dips
2013-06-02T09:35:23 < dongs> R2COM: now make me http://www.dektec.com/Products/PCI/DTA-Plus/ for cheap
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2013-06-02T09:36:49 < R2COM> they mean bossting *from* -100 to +7 probably
2013-06-02T09:36:54 < dongs> no.
2013-06-02T09:36:57 < dongs> its adjustable
2013-06-02T09:37:04 < dongs> input is ~-29dBm or so
2013-06-02T09:37:11 < dongs> and it adjusts it from -100 to +7
2013-06-02T09:37:19 < dongs> in steps of 1dbm
2013-06-02T09:37:40 < R2COM> whats that all stuff
2013-06-02T09:37:44 < R2COM> some sort of tv band
2013-06-02T09:37:49 < R2COM> tv receiver
2013-06-02T09:37:55 < dongs> which stuff
2013-06-02T09:38:05 < R2COM> the whole thing, and why PCI?
2013-06-02T09:38:09 < dongs> its not pci
2013-06-02T09:38:12 < dongs> its just dummy pci sized
2013-06-02T09:38:22 < R2COM> I see its board with PCI sockets?
2013-06-02T09:38:25 < dongs> yes
2013-06-02T09:38:33 < dongs> but it doesnt connect as pci card
2013-06-02T09:38:35 < dongs> its just dummy
2013-06-02T09:38:38 < dongs> i think those are all GNDs only
2013-06-02T09:38:45 < dongs> or just power+gnd
2013-06-02T09:38:46 < dongs> no signalling
2013-06-02T09:38:49 < dongs> its conntrolled by usb
2013-06-02T09:40:35 < R2COM> so its basically being connected to another module which generates frequency, and this module just adjusts the signal level
2013-06-02T09:40:42 < dongs> yes
2013-06-02T09:40:45 < dongs> attenuator/amp
2013-06-02T09:40:51 < R2COM> nah, they say agc
2013-06-02T09:40:57 < dongs> ?
2013-06-02T09:41:01 < R2COM> automatic gain control
2013-06-02T09:41:08 < dongs> i know what agc is
2013-06-02T09:41:10 < dongs> where do you see it
2013-06-02T09:41:15 < R2COM> datasheet?
2013-06-02T09:41:35 < dongs> i see it now. that just means it adjusts gain/whatever to output at specified level
2013-06-02T09:41:44 < R2COM> they are probably using variable gain attenuator
2013-06-02T09:41:48 < R2COM> hard to see pcb pic is small
2013-06-02T09:41:57 < R2COM> but there are no many components, few main chips
2013-06-02T09:41:58 < dongs> the pcb is inside that aluminum case.
2013-06-02T09:42:10 < R2COM> ah yea, top pcb is signal gen.
2013-06-02T09:42:14 < dongs> right
2013-06-02T09:42:30 < dongs> i have both, but the amp is liek ~30 tiny screws
2013-06-02T09:42:32 < dongs> to take it apart
2013-06-02T09:42:36 < dongs> and i am pretty sure its sealed
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2013-06-02T09:42:58 < R2COM> if they dont want to show component they would also chip off thin layer from top of chip
2013-06-02T09:43:05 < R2COM> like Rigol does on their equipment
2013-06-02T09:43:12 < dongs> rigol does it beacuse they're chinks
2013-06-02T09:43:15 < dongs> dektek is eurofags.
2013-06-02T09:43:19 < dongs> they dont do that kinda retarded shit
2013-06-02T09:43:28 < R2COM> well some companies do
2013-06-02T09:43:34 < R2COM> some big companies do it as well
2013-06-02T09:43:40 < R2COM> they just dont want to share what they use
2013-06-02T09:43:45 < dongs> this discussion is about cloning that amp/attenuator for less than 2800 eur
2013-06-02T09:43:55 < R2COM> hmmm
2013-06-02T09:44:03 < R2COM> and how much is that one I'm looking for?
2013-06-02T09:44:14 < R2COM> looking at*
2013-06-02T09:44:21 < dongs> the price is on the site i linked
2013-06-02T09:44:23 < dongs> 2800-something eur
2013-06-02T09:44:25 < dongs> for the amp
2013-06-02T09:44:33 < dongs> < dongs> R2COM: now make me http://www.dektec.com/Products/PCI/DTA-Plus/ for cheap
2013-06-02T09:44:47 < dongs> List Price
2013-06-02T09:44:48 < dongs> DTA-Plus	€    2.895
2013-06-02T09:44:58 < R2COM> heh
2013-06-02T09:45:01 < R2COM> interesting
2013-06-02T09:45:11 < dongs> it is definitely accurate tho
2013-06-02T09:45:24 < R2COM> it says + - 1dB
2013-06-02T09:45:33 < dongs> right.
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2013-06-02T09:45:50 < R2COM> so from 50MHz to 870MHz its range of operation
2013-06-02T09:46:09 < R2COM> but what is the whole system for?
2013-06-02T09:46:16 < R2COM> I mean in general its final purpose?
2013-06-02T09:47:03 < dongs> sensitivty testing, etc
2013-06-02T09:47:20 < R2COM> and by the way, I am not sure if 2800eur expencive or no... such stuff usually takes lots of money to develop
2013-06-02T09:47:23 < dongs> modulator is just to make dtv signal for whatever purpose, ive used the amp to test how far down receivers can work properly etc.
2013-06-02T09:47:38 < R2COM> its not like "look what components to use, real quick do schematic, solder pcb and it works"
2013-06-02T09:47:43 < dongs> sure
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2013-06-02T09:48:02 < R2COM> usually one makes many pcb's like breakouts, and just tests one single module/channel, and...it takes money
2013-06-02T09:48:21 < R2COM> like those modules I showed..
2013-06-02T09:48:25 < R2COM> then another one with several others
2013-06-02T09:48:28 < R2COM> then combine
2013-06-02T09:48:33 < R2COM> and sometimes has to redo things
2013-06-02T09:48:37 < R2COM> means more $$
2013-06-02T09:48:51 < R2COM> by the time the whole shit is tweaked one spent already fucktons of money to get it done right
2013-06-02T09:49:13 < R2COM> and in general one wouldnt charge *cheap* after that
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2013-06-02T10:11:45 < bairdy>  E14 have a Freescale 'Freedom' board competition, "Why is it so great, in 25 words or less". It be trolltiem.
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2013-06-02T12:39:36 < R2COM> http://i.imgur.com/JOrjHyp.png
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2013-06-02T12:45:23 < dongs> too much sma
2013-06-02T12:45:33 < R2COM> yep
2013-06-02T12:45:46 < dongs> start using u.fl
2013-06-02T12:45:48 < dongs> like a pro
2013-06-02T12:46:06 < R2COM> wow really
2013-06-02T12:46:22 < R2COM> anyhow
2013-06-02T12:46:25 < R2COM> sleep time now
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2013-06-02T13:36:09 < jon1012> hi
2013-06-02T13:37:23 < dongs> lo
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2013-06-02T14:06:05 <+Steffanx> hi
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2013-06-02T14:39:57 < dongs> sup dongs
2013-06-02T14:40:39 < dongs> apparently i can program opamps in F3 as follower?
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2013-06-02T14:41:44 < dongs> thats kinda cool cause i was gonna put a opamp outside to do same shit
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2013-06-02T14:45:21 < dongs> hm the datasheet is pretty vague on that shit
2013-06-02T14:47:08 < dongs> Important note: the amplifier output pin is directly connected to the output pad to minimize the output impedance. It cannot be used as a general purpose I/O, even if the amplifier is configured as a PGA and only connected to the ADC channel.
2013-06-02T14:47:12 < dongs> uh what
2013-06-02T14:49:36 < dongs> man the opamp section in RM is worthless
2013-06-02T14:49:42 < dongs> has anyone tried using that shit?
2013-06-02T14:49:59 < dongs> waste of opamp_vout pin makes this shit fucking useless
2013-06-02T14:53:36 < Luggi09> dongs: I had a look at the opamps in the datasheet it says you can only use them as a non inverting amplifier with gain down to 2 in pga mode
2013-06-02T14:53:46 < dongs> im not interested in pga mode
2013-06-02T14:53:49 < dongs> i just want a voltage follower
2013-06-02T14:53:58 < dongs> i.e. - to vout
2013-06-02T14:54:05 < dongs> and + input
2013-06-02T14:54:17 < Luggi09> then just connect output and - input externally
2013-06-02T14:54:23 < dongs> and waste 3 pins?
2013-06-02T14:54:29 < dongs> lemme get right on that
2013-06-02T14:54:35 < dongs> it'll be cheaper to actually get a dualopamp in like wson8 or somesht
2013-06-02T14:55:20 < dongs> man that is fucking dumb they put opamp in the thing and you cant flexibly route its inputs/outputs
2013-06-02T14:55:51 < Luggi09> yeah the whole implementation looks kinda half assed
2013-06-02T14:57:20 < dongs> sigh oh well, there goes that idea
2013-06-02T14:57:23 < dongs> was gonna save some board space
2013-06-02T14:57:28 < dongs> but this is pretty dum
2013-06-02T14:57:35 < Luggi09> dongs: this might be helpful, I put all the possible pinouts for the opamps in an exel sheet for better overview
2013-06-02T14:57:37 < Luggi09> http://www.file-upload.net/download-7668621/STM32f303opv.xlsx.html
2013-06-02T14:58:05 < dongs> green = forced vouts?
2013-06-02T14:58:32 < Luggi09> no, that's just that you see them better
2013-06-02T14:58:46 < dongs> right, but if you turn on that opamp, that output will be there
2013-06-02T14:58:52 < Luggi09> that's right
2013-06-02T14:58:52 < dongs> and you cant use it as gpio, is that what im reading?
2013-06-02T14:59:05 < dongs> meh, no use then
2013-06-02T14:59:11 < Luggi09> yes and it's connected to the corresponding adc input
2013-06-02T14:59:15 < dongs> right
2013-06-02T14:59:20 < dongs> that part is all i want
2013-06-02T14:59:23 < dongs> but i dont want it out on a pad :)
2013-06-02T15:03:19 < dongs> http://www.analog.com/static/imported-files/rarely_asked_questions/unused_op-Amp_article.html
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2013-06-02T15:05:23 < Luggi09> good article
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2013-06-02T15:15:46 < Luggi09> dongs: ok I just read the section in the reference manual, it seems you can connect - and output internally, but you still "waste" one pin on the stm for the output
2013-06-02T15:15:55 < Luggi09> doesn't seem too bad imho
2013-06-02T15:16:03 < dongs> http://www.turingbirds.com/temp/fix.jpg what the fuck is going on here
2013-06-02T15:16:50 < dongs> bad beacuse I'm 100% out of pins
2013-06-02T15:17:45 < Luggi09> then it's no use, just out of couriosity what are you designing ?
2013-06-02T15:18:25 < dongs> just make lowimpedance inputs for adc
2013-06-02T15:19:39 < dongs> where doyou see in RM that it says you can connect - to output
2013-06-02T15:20:41 < dongs> is that VM_SEL/VP_SEL shit?
2013-06-02T15:21:02 < Luggi09> The amplifier can be configured as a follower, by setting the VM_SEL bits to 11 in the
2013-06-02T15:21:04 < Luggi09> OPAMPx_CR register.
2013-06-02T15:21:17 < Luggi09> on page 354
2013-06-02T15:21:30 < dongs> ok i see it
2013-06-02T15:23:21 < dongs> but still yeah, cant afford to waste a pin
2013-06-02T15:23:35 < dongs> funny that microexplorer shit doesnt properly handle this case
2013-06-02T15:23:48 < dongs> i expected turning on opamp VINM or whatever would permanently enable corresponding VOUT
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2013-06-02T15:32:14 <+Steffanx> lol @ song in that article dongs
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2013-06-02T15:33:59 < dongs> yes tahts why i linked it
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2013-06-02T15:38:39 < dongs> hmm, switcher of 7805
2013-06-02T15:38:42 < dongs> of=or
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2013-06-02T16:27:01 < Laurenceb_> http://www.udoo.org/
2013-06-02T16:27:04 < Laurenceb_> in b4 dongs
2013-06-02T16:32:08 < Laurenceb_> "Arduino Due has not yet implemented buffered serial transmit, so Serial.print(“anything_more_than_2_characters”) will block until the last 2 bytes are in the UART shift register and 1-byte buffer"
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2013-06-02T17:21:32 < dongs> http://www.kickstarter.com/projects/435742530/udoo-android-linux-arduino-in-a-tiny-single-board haha half a million
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2013-06-02T17:35:39 < qyx_> if you give something name containing "uino" or "pi", success is guaranteed
2013-06-02T17:35:53 < Laurenceb_> "either Android or Linux"
2013-06-02T17:35:56 < Laurenceb_> logic fail
2013-06-02T17:36:28 < qyx_> Develop an innovative product for a growing market
2013-06-02T17:36:28 < qyx_> lol
2013-06-02T17:36:30 < qyx_> innovative
2013-06-02T17:36:33 < Laurenceb_> inb4 RMS "GNU/Android"
2013-06-02T17:37:46 < dongs> wahts so innovative about tarduino OR lunix on a shitty chinese SoC
2013-06-02T17:37:57 < Laurenceb_> "creating your projects with minimum knowledge"
2013-06-02T17:38:05 < dongs> lol
2013-06-02T17:39:06 < qyx_> educational platform for gaining minimum knowledge
2013-06-02T18:01:12 < Tectu> hmm
2013-06-02T18:01:51 < Tectu> there are to many of these things out there
2013-06-02T18:05:21 < dongs> shit likes to multiply
2013-06-02T18:17:20 < dongs> whats the least retarded way to have two power supplies feeding one circuit without back feeding into each other without a diode (and associated voltage drop)
2013-06-02T18:17:51 <+Steffanx> I remember you asked that before, perhaps a year ago
2013-06-02T18:18:10 < ABLomas> ;-)
2013-06-02T18:18:18 < gxti> there are 'ideal diode' ICs that use a mosfet to pass
2013-06-02T18:18:20 < dongs> i think so
2013-06-02T18:18:34 < dongs> Steffanx: i probably ended up using a diode back then
2013-06-02T18:18:44 < dongs> gxti: seen taht too.
2013-06-02T18:18:46 < ABLomas> still working on this question? Forget it, move on, keep only one source active, that's all (ESC power)
2013-06-02T18:18:55 < dongs> ABLomas: unrelated, but thanks
2013-06-02T18:19:16 < dongs> gxti: how does pfet solve this anyway
2013-06-02T18:19:23 < dongs> one direction it still goes thorugh its dioe
2013-06-02T18:19:25 < dongs> diode
2013-06-02T18:19:47 < dongs> unless they do something more creative
2013-06-02T18:20:14 < gxti> the body diode would be pointed the same way as if you just had a diode
2013-06-02T18:20:20 < dongs> right
2013-06-02T18:20:39 < gxti> but the IC turns on the fet so there's no drop
2013-06-02T18:20:42 < dongs> so it still drops
2013-06-02T18:20:44 < dongs> oh
2013-06-02T18:20:58 < gxti> are you trying to balance the load?
2013-06-02T18:21:04 < dongs> no
2013-06-02T18:21:10 < gxti> good, that's more exciting
2013-06-02T18:21:55 < dongs> actually, more important is that when  vcc1 is on, I don't want shit thats still connected on vcc2 to be powered by it
2013-06-02T18:22:18 < dongs> (i mean power supply on vcc2)
2013-06-02T18:22:26 < dongs> thats off or hwatever.
2013-06-02T18:22:38 < dongs> now i do remember having this convo
2013-06-02T18:22:45 < dongs> i think i actually ended up using something other than diode that time
2013-06-02T18:22:53 < dongs> and it wasnt optimal because when I built hte circuit it sucked
2013-06-02T18:23:08 < dongs> and I had to hack in a extra trace from MCU
2013-06-02T18:23:12 < dongs> to switch a pfet or somethin like that
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2013-06-02T18:25:32 < Tectu> dongs, just out of personal interests, might I ask where you need such an application?
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2013-06-02T18:25:49 < dongs> Tectu: 2 usb supplies that needed  to power half  a circuit
2013-06-02T18:25:55 < dongs> or another half.
2013-06-02T18:25:58 < Tectu> aah
2013-06-02T18:26:08 < dongs> plug in one way, it does A+B, plug in another way, it does B only.
2013-06-02T18:27:11 < Tectu> hmkay, thanks
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2013-06-02T18:27:29 < dongs> im sure emeb_mac knows.
2013-06-02T18:27:56 < emeb_mac> so what you're saying is I have to read the logs
2013-06-02T18:28:06 < dongs> nope, im just trolling
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2013-06-02T18:28:54 < emeb_mac> shocked!
2013-06-02T18:30:10 < emeb_mac> what the heck...
2013-06-02T18:30:11 < emeb_mac> zlog
2013-06-02T18:30:11 < zlog> emeb_mac: Log stored at http://tom-itx.dyndns.org:81/~tom-itx/irc/logs/%23%23stm32/2013-06-02.html
2013-06-02T18:32:38 < Laurenceb_> can't you just have two regulators?
2013-06-02T18:32:54 < Laurenceb_> most regulators are fine with a "back voltage"
2013-06-02T18:33:09 < dongs> ruruse
2013-06-02T18:33:16 < dongs> er rusure
2013-06-02T18:33:18 < emeb_mac> baby got back voltage
2013-06-02T18:33:18 < Tectu> Laurenceb_, since it's USB and he does not want a voltage drop, I assume he doesn't not want to use a regulator either
2013-06-02T18:33:37 < Laurenceb_> oh
2013-06-02T18:33:50 < gxti> i thought most regulators would backfeed voltage from output to input
2013-06-02T18:33:52 < Laurenceb_> so just have a ldo to the usb rail
2013-06-02T18:34:06 < Laurenceb_> gxti: i havent seen that
2013-06-02T18:34:13 < gxti> dunno lol
2013-06-02T18:34:36 < dongs> wait, from output to input?
2013-06-02T18:34:39 < dongs> isnt that their purpose
2013-06-02T18:34:52 < dongs> o never mind im dum
2013-06-02T18:35:24 < BJfreeman> most linear regulators are a series transistor it would damage it if there was reverse current
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2013-06-02T18:36:01 < gxti> i've seen external reverse diodes to prevent damage, not sure what conditions would actually result in damage...
2013-06-02T18:40:46 < Tectu> yes. I always back an anti-parallel diode over my linear regulators
2013-06-02T18:40:58 < Tectu> especially when I have some 20$ Amps behind them
2013-06-02T18:42:02 < Tectu> also, I oftenly have the way higher capacitance behind the regulator then before of it
2013-06-02T18:42:16 < Tectu> and then it's very likely that the output is becomming higher than the input
2013-06-02T18:42:30 < Tectu> then the regulator gets destroyed and next power up -> everything behind him is destroyed
2013-06-02T18:42:48 < gxti> sure, but how much backvoltage does it take to destroy it
2013-06-02T18:44:09 < Tectu> well, reverse base/emitter voltage I assume
2013-06-02T18:45:18 < Tectu> somebody said it's equal to the drop out voltage
2013-06-02T18:45:27 < Tectu> sounds reasonable, but I don't know if that's true
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2013-06-02T19:24:43 < Laurenceb_> actually
2013-06-02T19:24:53 < Laurenceb_> i was using Ti regulators
2013-06-02T19:25:04 < Laurenceb_> which use a n channel fet + charge pump
2013-06-02T19:25:09 < Laurenceb_> so a little different
2013-06-02T19:26:50 < Laurenceb_> use them on my datalogger boards as part of the power saving
2013-06-02T19:28:43 < Laurenceb_> getting up to 4days logging with 3x sparkfun 9DOF boards with 100hz logging on 2 and 1KHz on a third
2013-06-02T19:28:51 < Laurenceb_> with 2Ah lipo
2013-06-02T19:29:28 < dongs> uh
2013-06-02T19:29:32 < dongs> thats fucking terrible
2013-06-02T19:29:35 < dongs> if your shit didnt suck
2013-06-02T19:29:38 < dongs> that would log for a month
2013-06-02T19:29:54 < Laurenceb_> well... its a lot of data
2013-06-02T19:30:02 < Laurenceb_> almost using up a full 4GB for a log
2013-06-02T19:30:24 < dongs> heh
2013-06-02T19:31:39 < Laurenceb_> i guess if i used DMA for the I2C
2013-06-02T19:31:53 < Laurenceb_> then the stm32 could be in sleep more of the time
2013-06-02T19:32:13 < flop> is there a way to know at what speed the core is currently running without calculating it from the registers?
2013-06-02T19:32:30 < Laurenceb_> ...
2013-06-02T19:33:30 < dongs> wat
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2013-06-02T19:38:48 < Laurenceb_> i think my µSD card is using a lot of the current
2013-06-02T19:38:58 < Laurenceb_> wonder if there is a way to "sleep" it
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2013-06-02T20:15:10 < flop> is there any ST usb driver for the stm32?
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2013-06-02T20:26:41 < Tectu> yes
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2013-06-02T21:32:01 < gxti> welcome to ##stm32-help-desk
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2013-06-02T21:39:46 <+Steffanx> is that what the channel is for mr gxti?
2013-06-02T21:40:09 < gxti> no this channel is for entertaining the trolls
2013-06-02T21:40:21 < gxti> not answering questions from the reference manual :P
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2013-06-02T22:09:15 <+Steffanx> ah ok
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2013-06-02T22:09:21 <+Steffanx> so ##stm32-crap is for that gxti?
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2013-06-02T22:20:46 < gxti> i wasn't expecting the spanish inquisition Steffanx
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2013-06-02T23:08:09 < BJfreeman> flop if you talking about chips no, if your talking about a particular board they register in the device manager
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2013-06-02T23:17:27 < BJfreeman> anyone have a eagle libr for STM32F417IG  UFBGA176 package
2013-06-02T23:17:52 <+Steffanx> pass
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--- Day changed Mon Jun 03 2013
2013-06-03T00:02:44 < gxti> i would have thought "people who use other people's eagle libs" and "people who use bga" would be disjoint sets
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2013-06-03T00:31:34 < Posterdati> hi
2013-06-03T00:32:31 < Posterdati> I need help configuring mouse in the circle for stm32f107, I modified it for my application, but my pc continues to assign it a mouse device :(
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2013-06-03T01:58:02 < BJfreeman> gxti  zing
2013-06-03T01:58:48 < dongs> sup dongs
2013-06-03T01:58:59 < dongs>  < gxti> i would have thought "people who use other people's eagle libs" and "people who use bga" would be disjoint sets
2013-06-03T01:59:02 < dongs> haha
2013-06-03T01:59:04 < dongs> so true
2013-06-03T01:59:48 < dongs> so apparently F303RB is cheaper than F303CC
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2013-06-03T02:17:51 < mtbg> hi
2013-06-03T02:18:42 < mtbg> zyp: 40MB/s on two EPs and probably that is maximum - overclocking AHB does not give any improvement
2013-06-03T02:19:39 < zyp> understandably, AHB should not be the bottleneck
2013-06-03T02:19:54 < dongs> heh
2013-06-03T02:20:22 < mtbg> I overclocked the whole thing, system clock was about 200MHz
2013-06-03T02:20:44 < mtbg> it seems the bottleneck is clocked independly
2013-06-03T02:20:46 < dongs> from 168?
2013-06-03T02:21:00 < dongs> how did usb still work?
2013-06-03T02:21:01 < mtbg> so I assume it is the otg hs peripheral which is clocked from phy
2013-06-03T02:21:11 < mtbg> usb phy has its own clock
2013-06-03T02:21:12 < dongs> oh, like that.
2013-06-03T02:21:21 < dongs> using usb3300 or someshit like that?
2013-06-03T02:21:49 < mtbg> usb3300 is an ulpi phy?
2013-06-03T02:21:54 < dongs> yea
2013-06-03T02:22:05 < mtbg> so yes, something like that, high speed level 0 phy
2013-06-03T02:22:14 < mtbg> cy7c68003
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2013-06-03T02:23:49 < mtbg> 40MB/s is pretty enough, though
2013-06-03T02:23:50 < zyp> mtbg, as I've said before, if you have something that will run on my setup here, I'd run it through the analyzer to confirm that it's not the host that's the bottleneck
2013-06-03T02:24:11 < mtbg> do you have an ulpi phy?
2013-06-03T02:24:58 < dongs> i have some usb3300 breakouts ^_^
2013-06-03T02:25:20 < dongs> hm, i think wvshare does too
2013-06-03T02:25:31 < dongs> http://www.wvshare.com/product/USB3300-USB-HS-Board.htm
2013-06-03T02:27:23 < zyp> yes
2013-06-03T02:28:04 < mtbg> ok
2013-06-03T02:28:09 < zyp> I got one of those boards with my waveshare f4 kit, plugs right into the board
2013-06-03T02:28:29 < mtbg> btw
2013-06-03T02:28:47 < mtbg> are there any microcontrollers with usb 3.0 already?
2013-06-03T02:28:54 < zyp> fx3?
2013-06-03T02:29:02 < mtbg> '51?
2013-06-03T02:29:26 < zyp> arm9 iirc
2013-06-03T02:29:37 < dongs> fx3 is arm9
2013-06-03T02:29:46 < dongs> we're using it for some HDMI capture shit here.
2013-06-03T02:30:33 < zyp> that TI usb3-sata adapter chip people were talking about the other day had a cortex-m
2013-06-03T02:30:44 < dongs> heh yeah
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2013-06-03T02:31:10 < zyp> but I'm not sure it would be usable for much other than acting as a usb3-sata-bridge
2013-06-03T02:31:27 < mtbg> there are usb 3.0 phys which have a standard 8-bit 60MHz ulpi bus
2013-06-03T02:31:39 < mtbg> and an additional 16 bit 250MHz superspeed bus
2013-06-03T02:32:06 < zyp> heh
2013-06-03T02:32:32 < mtbg> some fpga would probably do
2013-06-03T02:32:37 < zyp> oh well, I don't need those speeds for now
2013-06-03T02:32:52 < dongs> FX3 with 16bit fifo would come pretty close to usb3 max
2013-06-03T02:32:58 < dongs> for pushing raw bulk data in/out
2013-06-03T02:33:04 < zyp> nowadays I'm dicking around with HID, perfectly happy with FS :p
2013-06-03T02:33:06 < dongs> like i said, its doing raw hdmi capture h ere
2013-06-03T02:33:33 < mtbg> I don't like abusing HID class which is meant to be for HIDs
2013-06-03T02:33:44 < zyp> me neither, but this is actual HID
2013-06-03T02:33:47 < dongs> can you have a usb3 hid device
2013-06-03T02:34:05 < dongs> does it get faster.
2013-06-03T02:34:16 < zyp> dongs, I don't see any reason you wouldn't
2013-06-03T02:35:28 < dongs> hmm smsc doesnt have any usb3 stuff
2013-06-03T02:35:34 < dongs> unless im looking in wrong pla ce
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2013-06-03T02:36:08 < dongs> http://www.smsc.com/index.php?tid=129&cid=182
2013-06-03T02:38:12 < emeb_mac> heh - those guys are not far from here. Used to be "Gain Technology" and then SMSC bought them.
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2013-06-03T02:41:29 < zyp> dongs, by the way, if I made a ~30x30cm 2 layer pcb design, how much do you imagine the price of 5 would be?
2013-06-03T02:42:41 < mtbg> well, fx3 does max of 100MHz on the GPIF according to the datasheet, so 32-bit interface is needed to use almost full bandwidth
2013-06-03T02:45:42 < emeb_mac> that's a big board.
2013-06-03T02:47:01 < zyp> yep, but most of the area would be cutouts
2013-06-03T02:47:46 < emeb_mac> flight hardware?
2013-06-03T02:47:48 < zyp> http://bin.jvnv.net/f/4rAPs.JPG <- I'm thinking somethink like this, done as a single board instead of 25 linked ones
2013-06-03T02:48:12 < zyp> then I could also fit an stm32 in the corner for handling everything
2013-06-03T02:48:47 < emeb_mac> I've seen that before - what is it?
2013-06-03T02:49:12 < zyp> http://bin.jvnv.net/f/jm7Kb.JPG
2013-06-03T02:49:36 < dongs> zyp: 30x30 cm?
2013-06-03T02:49:51 < zyp> something like that
2013-06-03T02:50:09 < emeb_mac> some kind of touch-screen overlay?
2013-06-03T02:50:10 < dongs> cutouts isnt the problem, the problem is film cost for that area will be high
2013-06-03T02:50:18 < zyp> emeb_mac, yep
2013-06-03T02:50:39 < zyp> film cost?
2013-06-03T02:51:26 < dongs> film thats used to etch the board
2013-06-03T02:52:26 < zyp> that's the setup cost, regardless of how many panels you want?
2013-06-03T02:54:03 < dongs> yea
2013-06-03T02:54:31 < dongs> but for 30cm it'll be pretty big. i remember some fucktards bought something like 20x20cm and it was expensive
2013-06-03T02:55:16 < zyp> hmm, it'll be a lot of hassles too
2013-06-03T02:55:20 < dongs> fucktards because: the boards were all DIP
2013-06-03T02:55:22 < dongs> with tons of wasted space
2013-06-03T02:55:35 < dongs> so it totally didnt need to be giant
2013-06-03T02:55:42 < zyp> my eagle license doesn't allow me to do that large boards, and I wouldn't be able to fit half of it into the reflow oven
2013-06-03T02:55:54 < dongs> haha
2013-06-03T02:56:03 < dongs> hm i dont evne know if my reflow can do 30cm
2013-06-03T02:56:07 < dongs> i think 290mm is largest area
2013-06-03T02:56:26 < mtbg> it looks simple so you can use geda (or kicad, but...)
2013-06-03T02:56:39 < zyp> or altium
2013-06-03T02:56:42 < dongs> 8.welding zone.390MM*250MM
2013-06-03T02:57:08 < zyp> heh
2013-06-03T02:57:41 < zyp> guess it's out then, because I'm not hand-soldering it :p
2013-06-03T02:58:06 < emeb_mac> wimp. ;)
2013-06-03T02:58:49 < emeb_mac> you could do it as two 150x300mm boards
2013-06-03T02:58:52 < zyp> I was just thinking that it might be simpler and possibly cheaper than having a plexi sheet behind the boards to mount them on
2013-06-03T03:00:09 < zyp> I could, but I'm not sure there is a good way to join the boards
2013-06-03T03:01:01 < emeb_mac> RA 0.1" headers/sockets?
2013-06-03T03:01:13 < dongs> is this workproj?
2013-06-03T03:01:17 < dongs> or some self-dicking
2013-06-03T03:01:21 < emeb_mac> that's what dongs did on the AfroLED board - seems to work.
2013-06-03T03:03:02 < zyp> self-dicking
2013-06-03T03:03:25 < dongs> why is it overlayed over jap stuff
2013-06-03T03:03:47 < zyp> because I like jap stuff
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2013-06-03T03:05:15 < BrainDamage> also to make you feel at home
2013-06-03T03:05:31 < emeb_mac> just for dongs' benefit
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2013-06-03T03:12:47 < dongs> he's into e-amusement passes
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2013-06-03T03:48:06 < dongs> zyp, wehre does 1.5k go on usb before or aftrer 22r
2013-06-03T03:49:01 < dongs> hm one place i have it after one place before
2013-06-03T03:49:04 < dongs> i guess it doesnt matter?
2013-06-03T03:49:10 < dongs> both work
2013-06-03T03:49:55 < zyp> probably doesn't matter much, but I think it's supposed to be on the connector side
2013-06-03T03:49:55 < qyx_> its either 1500ohm or 1522ohm
2013-06-03T03:50:17 < dongs> ok, ill put it on front then
2013-06-03T03:51:01 < dongs> is it worth doing 1.5K by GPIO disconnect?
2013-06-03T03:51:13 < dongs> and if so: do you think I can use one of PC13-15 shits for it
2013-06-03T03:51:22 < qyx_> zyp: thats the board you will use to practise crazyness?
2013-06-03T03:51:23 < dongs> the weak gpio crap
2013-06-03T03:55:52 < dongs> hm fuckit ill just make it perm pullup
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2013-06-03T05:51:32 < gxti> chibios is full of the most useless assertions
2013-06-03T05:51:58 < gxti> i just want i2c, don't really care how fast it goes, but it requires me to initialize it by saying what frequency i want and then blows up because it can't hit it perfectly
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2013-06-03T05:53:44 < gxti> my other favorite is that it checks that PLL2 and PLL3 macros are defined to legal values even when they're permanently disabled
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2013-06-03T06:09:21 < dongs> huh
2013-06-03T06:09:55 < gxti> chDbgAssert((STM32_PCLK1 % (clock_speed * 2)) == 0, ...
2013-06-03T06:10:24 < gxti> find a suitable clock_speed for PCLK1 = 34666664
2013-06-03T06:10:30 < gxti> it exists, but i shouldn't have to do this crap
2013-06-03T06:11:15 < dongs> are you running at some weird speed?
2013-06-03T06:11:41 < gxti> 26mhz hse / 3 * 8 = 69333333.333...
2013-06-03T06:11:58 < dongs> 26mhz, really?
2013-06-03T06:12:02 < dongs> is that even in spec
2013-06-03T06:12:04 < dongs> i thought 25 was max
2013-06-03T06:12:13 < gxti> 25 is max crystal, 50 is max input
2013-06-03T06:12:21 < dongs> oh funtimes.
2013-06-03T06:12:23 < gxti> using whatever tcxos are cheap
2013-06-03T06:12:30 < dongs> heh
2013-06-03T06:12:43 < dongs> im sure chibios is tested on a total of 2 hardware targets
2013-06-03T06:12:45 < gxti> this is all sort of moot because at some point i want to make it accept any input and adjust on startup
2013-06-03T06:12:50 < gxti> so shit's going to get ugly anyway
2013-06-03T06:12:52 < dongs> -discovery and whatever nerd shit they have on hand
2013-06-03T06:13:35 < gxti> but for now i2c frequency is 81761hz ololol
2013-06-03T06:14:09 < dongs> chibidongs
2013-06-03T06:29:05 < bairdy> Something odd to find on Youtube-- 'neighbours having sex' recordings.. Definitely illegal in Australia to record/publish those, and surprisingly doesn't seem to violate the YT TOS either..
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2013-06-03T06:33:12 < gxti> wot
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2013-06-03T07:55:42 < dongs> better question is waht the hell are you doing looking for those recordings
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2013-06-03T08:59:05 < bairdy> Actually looking for anything online mentioning my Dad's old motel at Harrington.. (found a vid of a quadcopter flying near place, actually..) The recommendation sidebar listed stuff with "Motel" in it...
2013-06-03T08:59:26 < bairdy> Possibly datamatched against my search history. :P
2013-06-03T09:00:16 < dongs> most likley
2013-06-03T09:00:31 < bairdy> Anyway, 30+ single guys have every right to search for smut. Deal with it. :)
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2013-06-03T09:20:24 < dongs> http://i.imgur.com/fEwgaaQ.jpg
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2013-06-03T09:21:30 < Tectu> dongs, let me guess... his face gets a coat of coke?
2013-06-03T09:21:41 < dongs> no way
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2013-06-03T09:27:40 < Supaplex> so what's the deal with arm gcc here? https://dl.dropboxusercontent.com/u/85069787/arm-gcc.txt do I need some other libraries?
2013-06-03T09:28:31 < Supaplex> and it's debian mint if it makes any difference.
2013-06-03T09:28:32 < dongs> lol, 64 bit lunix on laptop in 2013
2013-06-03T09:28:39 < dongs> you're treading on some super hardcore stuff here.
2013-06-03T09:28:51 < dongs> i suspect you need half a gig of 32bit compatibility libs
2013-06-03T09:29:03 < dongs> that will probably break half of your installed software
2013-06-03T09:29:35 < Supaplex> well there is 8gb of ram installed
2013-06-03T09:29:58 < dongs> such a waste for lunix.
2013-06-03T09:30:43 < Supaplex> sure, but I run multipe vm's on occasion. otherwise the disk cache is nice.
2013-06-03T09:31:08 < dongs> I prefer to run luinix in VM on a proper desktop
2013-06-03T09:31:09 < talsit> Supaplex: in case you haven't noticed, there is an implicit "troll-advice" in front of each one of dong's comments
2013-06-03T09:31:22 < dongs> talsit: nice try except i told him what the problem was
2013-06-03T09:31:39 < talsit> trolls can sometimes be correct
2013-06-03T09:31:43 < talsit> they are still trolls :p
2013-06-03T09:33:07 < Supaplex> granted. too pooped... ya got me.
2013-06-03T09:33:28 < Supaplex> anyway, dunno which i386 libs I really need, or if they're already there.
2013-06-03T09:33:39 < dongs> you need wahtever 32bit compat shit.
2013-06-03T09:36:13 < dongs> or just install windows
2013-06-03T09:37:04 < Tectu> talsit, nice one :d
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2013-06-03T09:50:48 < R2COM> I run linux in VM too, on powerful machine
2013-06-03T09:50:53 < R2COM> mainly for some CAD package
2013-06-03T09:51:01 < R2COM> which does not have Windows version
2013-06-03T09:51:09 < talsit> which is that?
2013-06-03T09:51:15 < R2COM> which is what?
2013-06-03T09:51:33 < R2COM> cad?
2013-06-03T09:51:37 < R2COM> cadence IC flow
2013-06-03T09:52:10 < dongs> haha, lunix has a "powerful cad package" that doesnt run on windows?
2013-06-03T09:52:14 < dongs> i find that really hard to believe
2013-06-03T09:52:23 < R2COM> and the reason I run it in VM is, if Linux fucks itself up I'll just re-copy working freshly installed VM file with all software pre-installed
2013-06-03T09:52:40 < R2COM> dongs: its not *linux has*
2013-06-03T09:52:52 < R2COM> its that Cadence supports some of its stuff on Linux only
2013-06-03T09:53:01 < dongs> thats fucking unbelievably
2013-06-03T09:53:12 < dongs> -y+e
2013-06-03T09:53:23 < R2COM> http://www.cadence.com/rl/Resources/release_info/Supported_Platforms_Matrix.pdf
2013-06-03T09:53:57 < jpa-> 20 years ago it would have been ridiculous to run CAD on anything but unix :)
2013-06-03T09:54:10 < dongs> luckily, its not 20 years ago
2013-06-03T09:54:14 < dongs> and now real engineers run windows
2013-06-03T09:54:23 < talsit> most serious 3d packages run best on linux
2013-06-03T09:54:23 < dongs> and get work done
2013-06-03T09:54:27 < dongs> hahaa
2013-06-03T09:54:31 < dongs> holy shit so funny
2013-06-03T09:54:38 < dongs> talsit: does lunix even support proper hardware accelerated 3d rendering
2013-06-03T09:54:44 < R2COM> I dont know, in fact I did run lots of stuff on Linux
2013-06-03T09:54:49 < talsit> you mean openGL?
2013-06-03T09:54:54 < R2COM> and I just cant hold it
2013-06-03T09:54:55 < dongs> and I mean using freetard tools, not some hacked nvidia driver that had to rewrite half of X to make use of half of cards features
2013-06-03T09:55:12 < R2COM> I have no time fixing symb/links/libs/etc/ when I have my deadlines, I want stuff to work
2013-06-03T09:55:12 < dongs> talsit: yea, hardware accelerated opengl
2013-06-03T09:55:14 < talsit> i'm talking about vendor-supported linux
2013-06-03T09:55:16 < talsit> yes
2013-06-03T09:55:21 < dongs> im talking about shit working.
2013-06-03T09:55:24 < dongs> lunix = never working
2013-06-03T09:55:33 < talsit> 95% of all VFX is done on linux
2013-06-03T09:55:50 < talsit> the other 5% are studios with less than 5 people
2013-06-03T09:55:56 < R2COM> dongs: try to buy then RHEL or SLES but not open source ones
2013-06-03T09:55:59 < R2COM> maybe they are better
2013-06-03T09:56:00 < dongs> does anyone remebmer/;know what happens when TIM3_REMAP is active on F1
2013-06-03T09:56:08 < talsit> CentOS is ok
2013-06-03T09:56:18 < dongs> partial remap, specifically
2013-06-03T09:56:19 < talsit> for reliability
2013-06-03T09:56:19 < R2COM> I am using centos now
2013-06-03T09:56:27 < dongs> the pins move, but does it mean I can reuse original TIM3 pins for something else?
2013-06-03T09:56:32 < R2COM> but my main machine is Win7
2013-06-03T09:56:39 < R2COM> works smooth, no problems since install
2013-06-03T09:56:53 < talsit> maya, houdini, nuke, etc are all RHEL binaries
2013-06-03T09:56:53 < dongs> SPI i guess
2013-06-03T09:56:54 < dongs> hmm
2013-06-03T09:57:01 < dongs> talsit: yawbn
2013-06-03T09:57:02 < dongs> yawn
2013-06-03T09:57:07 < dongs> im talking about desktop open GL
2013-06-03T09:57:10 < dongs> not some bullshit rendering backends
2013-06-03T09:57:16 < dongs> that are ONLY there on lunix because its free as in aids
2013-06-03T09:57:20 < talsit> as i said: maya, houdini, nuke
2013-06-03T09:57:31 < talsit> do you even know what i'm talking about?
2013-06-03T09:57:45 < R2COM> nuke?
2013-06-03T09:58:03 < R2COM> nukes dont have OS ;)
2013-06-03T09:58:14 < dongs> talsit: yes, all backend renderign trash.
2013-06-03T09:58:19 < dongs> mile-long command lines
2013-06-03T09:58:21 < dongs> and GUI on windows
2013-06-03T09:58:24 < dongs> next try?
2013-06-03T09:58:38 < talsit> maya, houdini and nuke are gui apps
2013-06-03T09:59:11 < talsit> you're talking about renderman, 3delight
2013-06-03T09:59:16 < dongs> i'm sorry for whoever has to maintain that shitheap.
2013-06-03T09:59:36 < dongs> compiling their shit for over 9000 halfassed lunix distros must be an amazing job
2013-06-03T09:59:45 < talsit> except that they don't
2013-06-03T09:59:56 < talsit> they are, as i said before, RHEL binary compatible
2013-06-03T10:00:02 < talsit> hence, CentOS
2013-06-03T10:00:05 < dongs> haha
2013-06-03T10:00:12 < talsit> anyway, you're boring, going back to work
2013-06-03T10:00:12 < dongs> talsit, 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.
2013-06-03T10:00:44 < ABLomas> hahaha
2013-06-03T10:00:57 < talsit> awesome, can i do that both ways?
2013-06-03T10:02:57 < bairdy> "dongs: I think serious graphics users use hardware bought from a corner-store. hurrrrr."
2013-06-03T10:03:13 < dongs> bairdy: precisely.
2013-06-03T10:03:25 < dongs> they spend $10k on a 3d card they sure as fuck not gonna load free lunix to use with it
2013-06-03T10:03:46 < dongs> every 5 minutes their shit doesnt work at full potential they're losing money
2013-06-03T10:04:03 < bairdy> HPfucks, Slowaris, etc.
2013-06-03T10:04:05 < dongs> and lets face it, 3d in lunix is a joke
2013-06-03T10:04:47 < bairdy> Depends on the industry, really. Cinema-level work is Linux-based renderfarms, etc.
2013-06-03T10:05:06 < dongs> <baridy> Cinema-level work is Linux-based renderfarms
2013-06-03T10:05:26 < dongs> aka "we're too cheap to pay for winserver license, so we'll just use some free shit, if we could just make our shit work on baremetal without dealing with OS at all, we'd do that too"
2013-06-03T10:05:41 < dongs> they're not going for lunix because its amazing or someshit.
2013-06-03T10:06:13 < dongs> but effort of making it run on baremetal are more than just isntalling lunix and letting some bearded nerd fix it every few weeks when new kernel is released
2013-06-03T10:06:16 < dongs> so tehy just do taht
2013-06-03T10:06:21 < bairdy> "We chose Linux over Windows, because we needed more than 50 machines on the network.. Actually, about 50,000 machines."
2013-06-03T10:06:31 < dongs> so funny!
2013-06-03T10:06:41 < dongs> because windows doesnt support >50 machines on network
2013-06-03T10:06:52 < bairdy> Not very well.. :)
2013-06-03T10:06:53 < talsit> for other people, this is coming from someone with *actual* experience in that industry: we use linux because we can configure and deploy a system image to 500-15000 nodes overnight
2013-06-03T10:07:10 < talsit> system administration is incredibly easy with linux
2013-06-03T10:07:37 < talsit> and, since the software just works if you have it configured correctly, you have 600-1000 people working with no problem
2013-06-03T10:07:49 < dongs> pissing myself laughing
2013-06-03T10:07:57 < dongs> system administration, incredibly easy
2013-06-03T10:07:58 < dongs> ahahaha.
2013-06-03T10:08:05 < dongs> now try to maintain those 1500 machines
2013-06-03T10:08:12 < talsit> of course, you actually have to know what you're doing
2013-06-03T10:08:24 < talsit> easy: #> puppet install
2013-06-03T10:08:36 < talsit> #> puppet update
2013-06-03T10:08:42 < dongs> yea funny mile-long command lines
2013-06-03T10:08:48 < talsit> http://en.wikipedia.org/wiki/Puppet_(software)
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2013-06-03T10:09:28 < dongs> not  clicking
2013-06-03T10:09:33 < bairdy> Something funny about having lots of machines on a network-- Baaack in the early days, Newcastle Uni uses to have a bigass X Terminal lab (Labtam hardware, I believe.) It was awesome to enter the empty ~80 terminal lab at night, jump down hard on the floor, and nearly all 80 machines awoke from hiberation at once. :)
2013-06-03T10:09:41 < talsit> ignorance is bliss, as they say
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2013-06-03T10:11:21 < bairdy> Bizarre to think that all those 80 XTerms were on a single-line 10Base Coax network..
2013-06-03T10:13:27 < bairdy> You wouldn't do that today with 80 machines on a single gigabit network. (Although certainly seen people try..)
2013-06-03T10:15:59 < ABLomas> you still argue with dongs?
2013-06-03T10:16:34 < talsit> yes, sorry, my bad, i should learn
2013-06-03T10:18:37 < bairdy> The great outdoors: http://boards.4chan.org/out/res/129792  (from the last camping trip)
2013-06-03T10:20:30 < dongs> haha
2013-06-03T10:20:38 < dongs> http://images.4chan.org/out/src/1370242083896.jpg the analysis
2013-06-03T10:27:23 < bairdy> http://kildall.apana.org.au/~cjb/wordpress/wp-content/uploads/2013_southcamp/day5/20130521-070456.jpg ... there's some real punk-ass wombats out there.
2013-06-03T10:40:07 < dongs> https://wiki.arcoslab.eie.ucr.ac.cr/doku.php?id=ie0117_proyectos:final:adaptation_of_libopencm3_libraries_to_the_stm32f3
2013-06-03T10:40:10 < dongs> hah
2013-06-03T10:42:07 < ABLomas> Adapt the necessary libopencm3 libraries to run Paparazzi from the STM32F4 to the STMF3 hardware.
2013-06-03T10:42:09 < ABLomas> yay
2013-06-03T10:43:08 < dongs> that seems to be the source of abandoned libopencm3 patch for F3
2013-06-03T10:43:18 < dongs> and its gonna bitrot now due to politics
2013-06-03T10:46:17 < zyp> I'd rather call it lazyness
2013-06-03T10:53:01 < scrts> ABLomas -> sup?
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2013-06-03T10:59:03 < ABLomas> hi scrts
2013-06-03T11:00:03 < scrts> ABLomas -> hi, doing something with F3?
2013-06-03T11:00:21 < ABLomas> no, using only
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2013-06-03T11:09:27 < Tectu> is it just me or does every professional company which makes their own dev kits now thing that their boards must be tarduino shield compatible?
2013-06-03T11:10:08 < bairdy> It's just you.
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2013-06-03T11:19:26 < bairdy> "Hay guise-- we need a faggy name for an expansion board that we can trademark! "Shield", "boosterpack", "
2013-06-03T11:19:41 < bairdy> "Hay guise-- we need a faggy name for an expansion board that we can trademark! "Shield", "boosterpack", "cape", "plate" are already taken, though..
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2013-06-03T11:31:14 < Tectu> never heard cape before
2013-06-03T11:34:03 < jpa-> it's for beaglebone
2013-06-03T11:35:00 <+Steffanx> lol talsit tried to have a serious conversation with dongs :D
2013-06-03T11:35:54 < talsit> yeah, my mistake
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2013-06-03T11:36:22 < Supaplex> play with it, just don't talk to it. ;)
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2013-06-03T12:55:40 < karlp> Supaplex: are you sure your problems are 3/64 bit problems? looks like just bitrot in versaloon for stlink to me.
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2013-06-03T13:04:05 < Supaplex> karlp: I got svn rev 1055 to build. turns out lib32-foo is no more, and I needed i686-libc6 or something like that. got qemu-i386 ./*gcc to whine about the actual non x64 missing lib.
2013-06-03T13:04:23 < Supaplex> oh, and I changed the offset to 0x2000. trying that now (f4 discovery board)
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2013-06-03T13:06:55 < Supaplex> decided on 1055 based on a mailing list post (implied LKG, will bisect if this works)
2013-06-03T13:10:12 < karlp> what's the selling point of versaloon again?
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2013-06-03T13:11:44 < Supaplex> usb to everything (jtag, i2c, spi, swd, serial, 10+ others)
2013-06-03T13:12:51 < Supaplex> spent way too much time on this for a po dunk asus rt-n16 recovery. smh...
2013-06-03T13:15:10 < karlp> oh right, it's bus pirate, but with wayyyy less users or something.
2013-06-03T13:15:23 < Supaplex> *nod*
2013-06-03T13:15:50 < Supaplex> I got distracted by a little reverse engineering, and thought it'd be cake to slap that firmware on the eval board. hah.
2013-06-03T13:16:32 < Supaplex> someone in #openwrt actually bumped into the versaloon. I don't recall the dialog that sparked that conversation.
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2013-06-03T13:40:29 < zyp> is versaloon any good?
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2013-06-03T13:41:24 < zyp> I remember reading about it a while ago, but never got around to try it out
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2013-06-03T14:02:35 < Supaplex> it theory it sounds great, but I have no success with the firmware on the f0/f4 discovery boards I have.  Apparently one other fellow has tried to get it working, but no one posted the successful solution.  Based on what I've read, there are other MCU's versaloon will operate on too.  I think I've thrown all I can at it for now. I just tossed a new message at the mailing list, as the last posts for this board suggested a different flash load offset was ne
2013-06-03T14:03:49 < zyp> I see
2013-06-03T14:03:59 < zyp> have you looked at blackmagic probe?
2013-06-03T14:04:20 < zyp> that's what I'm currently using, I believe it's kind of similar to versaloon
2013-06-03T14:04:27 < Supaplex> heard of it. curious. Could I get that working on f0/f4 discovery boards?
2013-06-03T14:04:58 < zyp> you should be able to
2013-06-03T14:05:00 < Supaplex> here's my existing research/notes http://goo.gl/2yh1c for versaloon
2013-06-03T14:05:56 < zyp> are you thinking about putting it on the main mcu on the discovery board, or the stlink mcu?
2013-06-03T14:06:02 < Supaplex> I'll have to look into it further. I didn't seem to wrap my head around getting from the source to build a target for these boards. bed calls (I'm bushed).
2013-06-03T14:06:14 < Supaplex> I'd prefer the main one (since the F4 has a usb micro)
2013-06-03T14:06:27 < Supaplex> then I can stlink upgrade it easy.
2013-06-03T14:06:33 < zyp> I think bmp has build setups for either
2013-06-03T14:06:44 < zyp> talk to uwebonnes if you see him around, I think he did the port
2013-06-03T14:06:46 < dongs> if you flash bmp stuff it should have bootloader/wahtever that you will never be able to erase
2013-06-03T14:06:50 < dongs> that has usb updates
2013-06-03T14:07:12 < dongs> bmp bootloader is the most virus-like thing Ive seen on stm32
2013-06-03T14:07:21 < dongs> it protects its own pages on each reset
2013-06-03T14:07:28 < dongs> and cant be removed
2013-06-03T14:07:51 < Supaplex> interesting...
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2013-06-03T14:08:15 < Supaplex> I'll let irssi idle while I catch some shuteye. thanks for the input so far.
2013-06-03T14:09:45  * Laurenceb is thinking of filming 2017 solar eclipse
2013-06-03T14:09:52 < Laurenceb> from a balloon :P
2013-06-03T14:10:14 < dongs> thats a bit too early
2013-06-03T14:10:23 < Laurenceb> heh
2013-06-03T14:10:50 < Laurenceb> wonder if i can be bothered to build a stabilized platform + decent camera system
2013-06-03T14:11:26 < Laurenceb> canon dslr + chdk looks like the way to go
2013-06-03T14:16:07 < Laurenceb> http://www.youtube.com/watch?feature=player_embedded&v=W_9eYcGIT88
2013-06-03T14:16:17 < Laurenceb> been done one before, but mega lame camera
2013-06-03T14:16:26 < Laurenceb> and no stabilization
2013-06-03T14:17:35 < PaulFertser> The bootloader protection in BMP was disabled already afaict.
2013-06-03T14:17:51 < dongs> well, thats too late for me
2013-06-03T14:18:02 < dongs> I have 2 out of 3 boards sitting in a box here because the bootloader is fucking retarded
2013-06-03T14:18:09 < Laurenceb> gopro = epic fail
2013-06-03T14:22:43 < bairdy> Laurenceb: looks to me that the more impressive thing would be to record the shadow from the eclipse..
2013-06-03T14:23:03 < Laurenceb> bairdy: yeah, that gopro footage is really bad
2013-06-03T14:23:10 < Laurenceb> half the image is saturated
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2013-06-03T14:23:28 < bairdy> Yep.
2013-06-03T14:23:47 < Laurenceb> stabilized canon G1-X running chdk shooting a few frames/second in raw 14bit would be epic
2013-06-03T14:24:11 < jpa-> dongs: can't you just boot under reset and clear the protection then?
2013-06-03T14:24:20 < jpa-> i mean, connect debugger under reset
2013-06-03T14:24:39 < bairdy> Would've been interesting to see the Earth going under shadow... (photographing lights within the shadow..)
2013-06-03T14:24:50 < Laurenceb> yeah
2013-06-03T14:25:05 < Laurenceb> i think itd be fairly easy to do properly...
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2013-06-03T14:25:23 < Laurenceb> the vibration from the stabilization gyros might blur the images
2013-06-03T14:25:25 < bairdy> The hard part will be finding someone to donate a $600 camera :P :)
2013-06-03T14:25:40 < Laurenceb> http://stack.dataghost.com/S5-Angle.avi
2013-06-03T14:25:50 < Laurenceb> chdk can read the camera imu sensors
2013-06-03T14:25:57 < Laurenceb> looks a bit laggy there
2013-06-03T14:26:55 < zyp> jpa-, yeah, it's pretty easy, dongs' closed sores tools just weren't awesome enough to manage it
2013-06-03T14:27:21 < Laurenceb> teeheee
2013-06-03T14:27:37 < zyp> and people were talking about taking out the self-locking, so it might not even be a problem anymore
2013-06-03T14:32:32 < rigid> what is the best/most elegant way to flash arbitrary binary resources with my firmware image? convert it to a header? Use "objcopy -I binary ..." or using some openocd magic?
2013-06-03T14:32:47 < rigid> or would you say it doesn't matter at all since there isn't much difference...?
2013-06-03T14:32:58 < jpa-> zyp: ah, expected as much
2013-06-03T14:33:05 < jpa-> closed sores just fails
2013-06-03T14:33:41 < bairdy> rigid: I do the objcopy thing, since I'm a makefile weenie.
2013-06-03T14:33:55 < jpa-> rigid: i often just convert into a header
2013-06-03T14:34:49 < bairdy> All depends. Gimp can save images as header-style source, so whatever is convienient.
2013-06-03T14:37:21 < rigid> hm, it's not an image but a font and I'd like to exchange it quickly without much hassle, so I guess I'll try the objcopy thing
2013-06-03T14:37:29 < rigid> ...i'm also a Makefiler...
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2013-06-03T15:22:20 < ossifrage> I hate it when something was working and then I break it without a diff
2013-06-03T15:22:42 < ossifrage> somehow my stm32f0 usart is coming out 1.5x faster then it should with the PLL turned on
2013-06-03T15:24:23 < dongs> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0552a/CIHCAEJD.html
2013-06-03T15:25:59 < ossifrage> ah, found it, typo
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2013-06-03T15:41:42 < PaulFertser> Is that some kind of a running gig? I've surely seen a convo exactly like that before.
2013-06-03T15:43:11 <+Steffanx> Laurenceb, im not sure what chdk is written in, but i wonder if you can do that stabilization in some non-scripting language
2013-06-03T15:43:17 < dongs> haha
2013-06-03T15:43:29 <+Steffanx> I guess they now did it in ubasic or lua
2013-06-03T15:43:46 < dongs> its like DOS
2013-06-03T15:44:00 < dongs> (dongs)
2013-06-03T15:44:17 < dongs> gyros in OIS are very low dps
2013-06-03T15:44:22 < Laurenceb> http://www.youtube.com/watch?feature=player_embedded&v=W_9eYcGIT88
2013-06-03T15:44:29 < dongs> you cant use it for rough stabilization
2013-06-03T15:44:30 < dongs> at all
2013-06-03T15:44:32 < dongs> its only good for small movements
2013-06-03T15:47:10 <+Steffanx> Also not with some hackory?
2013-06-03T15:47:50 < dongs> usually their f ullscale range is something ~50deg/second
2013-06-03T15:48:00 < dongs> then they oversaturate
2013-06-03T15:48:11 < dongs> your typical gyro is more liek 500=2000deg/second
2013-06-03T15:48:34 < dongs> so if it jerks around faster than 50deg/sec you're screwed
2013-06-03T15:52:28 < bairdy> What would you be using the sensors for anyway? If it's just "don't take a picture if the camera is swaying too fast.."
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2013-06-03T16:02:10 < dongs> ^ ragequitter?
2013-06-03T16:02:40 <+Steffanx> Yes, because you are such an adult.
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2013-06-03T16:07:29 < bairdy> The ethernet-over-power adaptor in the room is being shitty..
2013-06-03T16:08:22 < zyp> I hear ethernet over power tends to be
2013-06-03T16:08:46 < bairdy> It works fantastic most of the time, but can be sensitive to the power connections in use.
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2013-06-03T16:09:04 <+Steffanx> It seems to work pretty well for the unifi zyp :)
2013-06-03T16:09:38 < zyp> a friend of mine recently got a pair to get connectivity to an outdoor storage shed
2013-06-03T16:10:29 < zyp> one end inside the distribution closet, the other end in the shed, just a few metres of cabling in between, no branching
2013-06-03T16:10:32 < bairdy> Packed up the desk and most of my stuff into boxes and got the 'volume' figured-out for what size sotrage unit I'll need, but now I'm in Steve-Jobs-Mode with a lamp and computer on the floor. :P :)
2013-06-03T16:10:44 < karlp> isn't it, "proper poe 802.3aef" is great, cheap hacks are cheap hacks that fail?
2013-06-03T16:10:54 < zyp> it was rated «up to 500 Mb/s», we benchmarked around 40 Mb/s
2013-06-03T16:10:55 < karlp> or whatever the 802.3 letters are for the full spec poe
2013-06-03T16:11:07 < bairdy> http://i.imgur.com/YhSSFQJ.jpg
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2013-06-03T16:11:23 < karlp> wtf is that?
2013-06-03T16:11:31 < zyp> Steffanx/karlp, I thought we were talking about powerline networking
2013-06-03T16:11:37 < zyp> not power over ethernet
2013-06-03T16:11:47 < karlp> oh, doh, yeah, I can't read good.
2013-06-03T16:11:51 <+Steffanx> Yeah, i should read more carefully
2013-06-03T16:12:20 < zyp> karlp, cheap PoE is fine as long as you don't need gigabit speeds
2013-06-03T16:12:38 < bairdy> karlp: the loney abode of a man whose workbenches are crated-up..
2013-06-03T16:16:16 <+Steffanx> cancer
2013-06-03T16:16:16 <+Steffanx> oops
2013-06-03T16:16:18 < gxti> i don't think the cheapness of the poe has anything to do with speed
2013-06-03T16:16:27 <+Steffanx> why i wrote that in here?
2013-06-03T16:16:36 < gxti> good question Steffanx
2013-06-03T16:16:43 <+Steffanx> ignore
2013-06-03T16:16:48 < gxti> i refuse
2013-06-03T16:17:09 <+Steffanx> ( i meant to search for that in here, not to send it )
2013-06-03T16:17:40 < zyp> gxti, for poe? cheap poe are using the two pairs that are unused in 100base-t for power transmission, and thus won't work for gigabit that requires all four pairs
2013-06-03T16:17:56 < gxti> yeah ok not enough coffee
2013-06-03T16:18:10 < gxti> you could still do dumb gigabit-capable poe, i guess probably nobody does though
2013-06-03T16:20:07 < zyp> if you are gonna make sure your hardware survives a 48V potential between your data-carrying pairs, you might as well add the «hey, I'm poe capable and want power»-circuitry
2013-06-03T16:21:48 < gxti> sure the negotiation IC is cheap, but the mandatory isolation is not
2013-06-03T16:22:14 < gxti> although even the extra transformer on the injector is enough to make it not cheap enough for china :p
2013-06-03T16:23:36 < gxti> also fake PoE usually doesn't tolerate 48V, it's typically more like 20. like a plug pack that happens to come in by rj-45.
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2013-06-03T16:26:24 < Tectu> what's fake PoE? How can PoE be fake?
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2013-06-03T16:30:16 < dongs> just dc over unused pairs
2013-06-03T16:30:17 < dongs> or whatever
2013-06-03T16:30:25 < dongs> without proper stuffs
2013-06-03T16:31:26 < zyp> Tectu, as in non-standard
2013-06-03T16:31:53 < Tectu> aah
2013-06-03T16:31:55 < zyp> meaning not necesasrily interopable with other vendors' equipment
2013-06-03T16:32:31 < Tectu> I did some PoE stuff a year ago. I was curious... you only need 4 wires for the actual ethernet to work... why not using the other ones as DC PoE instead of the modulation thing?
2013-06-03T16:32:35 < Tectu> I mean it would be easier, no?
2013-06-03T16:33:04 <+Steffanx> btw, I had some uni project for some company and had to work with the 'dsl network debugging guys'. Those guys complained all the time about those powerline network adapters
2013-06-03T16:33:28 < Tectu> what was the matter?
2013-06-03T16:33:54 <+Steffanx> Noise. Interferring with the frequencies used in DSL
2013-06-03T16:35:30 < zyp> yeah, I've heard similar complaints
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2013-06-03T16:37:13 <+Steffanx> The same about noisy SMPSs from a new device neighbours bought
2013-06-03T16:37:59 < zyp> people were raging in norwegian media last week because some HAM guy complained about his neighbors' plasma tv emitting too much noise, and they were sanctioned by the authorities to stop using it/replace it
2013-06-03T16:38:59 <+Steffanx> Hah, i think you can be forced here to do that as well. As actually they could say it's an RF transmitter etc.
2013-06-03T16:39:44 <+Steffanx> ( on the other hand. The telephone network isn't that good either )
2013-06-03T16:39:47 < gxti> Tectu: gigabit uses all the wires
2013-06-03T16:39:48 < BrainDamage> if it violates the regulations, it violates the regulations, altough the cost should probably shifted to the company that made it
2013-06-03T16:39:55 < Tectu> gxti, ah
2013-06-03T16:40:04 < Tectu> gxti, is it the same as 100 T-Base but with more than one lane?
2013-06-03T16:40:07 < zyp> BrainDamage, yep
2013-06-03T16:40:09 < gxti> Tectu: no
2013-06-03T16:40:31 < gxti> it uses all four pairs bidirectionally and clocked faster
2013-06-03T16:40:40 <+Steffanx> BrainDamage, of course, but you know that's not how it works
2013-06-03T16:40:40 < gxti> whereas 100mbit uses one pair for tx and one for rx
2013-06-03T16:40:44 < ABLomas> plasma... 15y old plasma or what? Mine is fine - silent (well, i didn't measured on very short range), blends in city noise =)
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2013-06-03T16:42:19 < zyp> Steffanx, all the dumbfucks were making out the HAM guy as the bad guy, complaining about how mean it was of him to force his neighbors to buy a new tv just so he could play with his hobby
2013-06-03T16:42:53 < Tectu> zyp, what douche bags
2013-06-03T16:42:58 < Tectu> zyp, I guess his neighbour still likes him, eh?
2013-06-03T16:43:24 < BrainDamage> the same people are probably scared of the "harmful emissions" from his antennas
2013-06-03T16:43:34 < BrainDamage> "radiation!!!1111one"
2013-06-03T16:43:52 < zyp> nah, that's a different group of dumbfucks
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2013-06-03T16:44:07 < BrainDamage> I'm willing to bet there's some overlap
2013-06-03T16:44:38 < zyp> probably, I guess they would be too dumb to consider the emissions from the tv as harmful
2013-06-03T16:46:34 < Tectu> the radio communication group of the military used to take the place in front ouf our houses as a place to build up their very big antenna and do their training
2013-06-03T16:46:45 < Tectu> people complained so hard - now they moved
2013-06-03T16:47:15 <+Steffanx> Somehow I wouldn't sleep well near one either, but for an unknown reason
2013-06-03T16:47:20 <+Steffanx> i do sleep well near a wifi accesspoint :P
2013-06-03T16:51:22 < Tectu> I'm sometimes worried sleeping next to my UPS
2013-06-03T16:54:14 < dongs> hoping it will explode?
2013-06-03T16:54:56 <+Steffanx> What you need/use an ups for Tectu?
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2013-06-03T16:55:36 < Tectu> dongs, yes
2013-06-03T16:55:49 < Tectu> Steffanx, we have currently a very unstable power supply
2013-06-03T16:55:52 < bairdy> More than once I've had the beeping from a UPS wake me up and I've shutdown the dial-in system before it lost charge..
2013-06-03T16:56:08 < Tectu> and my old file/backup server died with the data because of that
2013-06-03T16:56:17 < gxti> no reason not to have one Steffanx
2013-06-03T16:56:35 < Tectu> well my UPS is a bit oversized... It can keep the server running for 62minutes under average load (which won't be there, when everything else is shut down).
2013-06-03T16:57:12 < rlc> hi, is there a prerequisite to set the DBP bit in PWR_CR register?
2013-06-03T16:57:12 <+Steffanx> 62 min. most of the power outages take longer than that here.
2013-06-03T16:57:20 <+Steffanx> but that only happens 1 once in like 10 years
2013-06-03T16:57:40 <+Steffanx> ( of course you can shut your server down safely with that )
2013-06-03T16:57:49 < gxti> your power never blips for just a second?
2013-06-03T16:57:52 <+Steffanx> No
2013-06-03T16:57:55 < Tectu> Steffanx, sure. I keep it running for 10 minutes or until the battery is down to 5% (when I'd connect more stuff). Then I safetly shut it down
2013-06-03T16:57:57 < gxti> lies
2013-06-03T16:58:03 < Tectu> Steffanx, 30, not 10
2013-06-03T16:58:09 < Tectu> Steffanx, we currently have a lot power outs for 10min
2013-06-03T16:58:23 < Tectu> also what gxti said
2013-06-03T16:58:32 <+Steffanx> Really gxti. Actually, we do have more outages, but that happens because some experiment that goes wrong in the house :).
2013-06-03T16:58:51 < Tectu> Steffanx, of course, that's what I mean
2013-06-03T16:58:58 < Tectu> our federal supply (is it called like that?) is damn stable
2013-06-03T16:59:10 < Tectu> that's why I say... I have an outage twice a month
2013-06-03T16:59:46 <+Steffanx> I only have a 'server' running for a short while now. My before unused rpi that runs my irc core :)
2013-06-03T16:59:54 < bairdy> Another advantage of Linux-- when you shut it down, it does what it's told. Sucks to have the system decide it'll apply security update patches when there's less than 5 minutes of power left. :)
2013-06-03T16:59:54 <+Steffanx> And that's not improtant at all
2013-06-03T17:00:15 < Tectu> bairdy, lol!
2013-06-03T17:00:32 < Tectu> bairdy, that's why dongs has no UPS
2013-06-03T17:00:35 < Tectu> Steffanx, IRC /is/ important.
2013-06-03T17:03:27 <+Steffanx> My life doesnt depend of it
2013-06-03T17:03:35 < dongs> how the fuck do I use core_cmFunc.h from cmsis
2013-06-03T17:03:41 < dongs> just #including it spams all sorts of shit
2013-06-03T17:03:48 < dongs> the intrinsics or wahtever
2013-06-03T17:04:06 < dongs> i need __enable/disable_fault_irq()
2013-06-03T17:07:26 < Tectu> dongs, can you please try to use a less sanguinary language?
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2013-06-03T17:09:36 < gxti> bairdy: it's trivial to override that
2013-06-03T17:09:46 < gxti> and if you have things scripted to auto shutdown it won't apply updates :p
2013-06-03T17:10:17 < dongs> fuckit used armcc intrinsic instead
2013-06-03T17:10:31 < dongs> __disable_fiq()
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2013-06-03T17:37:37 < dongs> how do i make gnu-arm-whatever-objdump dump arm-style asm
2013-06-03T17:37:41 < dongs> and not GNUOOOoo
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2013-06-03T17:39:57 < gxti> gnope
2013-06-03T17:45:01 < Laurenceb> http://www.youtube.com/watch?v=1BH7poMtPVU
2013-06-03T17:45:16 -!- claude is now known as Claude
2013-06-03T17:53:08 < jon1012> hey
2013-06-03T17:53:20 < jon1012> has someone got sdio witgh an sd card to work without pullups ?
2013-06-03T17:53:40 < jon1012> (I mean without external pullup resistors)
2013-06-03T17:55:11 <+Steffanx> I read into that a while ago. Some people get away with it, with some SD cards jon1012
2013-06-03T17:55:27 <+Steffanx> but as the standard requires it.. why leave them out?
2013-06-03T17:55:44 < jon1012> I made my pcb without them
2013-06-03T17:55:57 < jon1012> following some dumbass schematics :)
2013-06-03T17:56:07 < gxti> hmm, so did i. haven't gotten around to actually writing code for the sd yet :p
2013-06-03T17:56:22 < gxti> and just sent for the new spin yesterday too. oh well, just a nice to have thing.
2013-06-03T17:57:14 < jon1012> a code that should work is hanging on f_open or f_opendir, etc
2013-06-03T17:57:30 < jon1012> while when no card is present it hangs nicefully with a "not ready" error
2013-06-03T17:57:49 < jon1012> but when I inset the card, heck, total crash
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2013-06-03T18:11:25 < Laurenceb> attn dongs
2013-06-03T18:11:26 < Laurenceb> http://www.pjrc.com/teensy/benchmark_usb_serial_receive_2.png
2013-06-03T18:12:52 < dongs> lol pjrc is a fucking moron
2013-06-03T18:14:06 < Laurenceb> im just trolling
2013-06-03T18:14:14 < Laurenceb> maple code is lame
2013-06-03T18:14:24 <+Steffanx> Yeah, so take it to ##stm32-crap
2013-06-03T18:14:25 < Laurenceb> im seeing over 800K
2013-06-03T18:15:35 -!- l4cr0ss [~l4cr0ss@unaffiliated/l4cr0ss] has joined ##stm32
2013-06-03T18:17:03 < BrainDamage> there is stm32-crap?
2013-06-03T18:17:14 < BrainDamage> and is it populated by anyone other than trollenceb?
2013-06-03T18:17:30 <+Steffanx> Its not populated so no one is interested in his crap
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2013-06-03T18:23:22 < karlp> why's pjrc a moron?
2013-06-03T18:24:16 < dongs> many reasons.
2013-06-03T18:24:27 < dongs> being a closed sores commercial scammer is a big one
2013-06-03T18:24:42 < dongs> he rides on the tarduino wave while claiming to be all about opensauce and shit
2013-06-03T18:25:08 < dongs> but all his crap is very closed sores
2013-06-03T18:25:23 < dongs> locked closed bootloaders, no gerbers on boards, bullshit schematics, etc
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2013-06-03T18:35:14 < Laurenceb> do you ever sleep dongs?
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2013-06-03T18:38:21 < dongs> yes?
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2013-06-03T18:42:54 < Laurenceb> oh its only 1am, nvm
2013-06-03T18:43:06 < Laurenceb> thought it'd be like 3am or something
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2013-06-03T18:56:47 < BJfreeman> teens have lots of energy :P
2013-06-03T18:59:13 < Laurenceb> teehee
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2013-06-03T19:43:15 <+dekar> dongs, I thought you liked closed source
2013-06-03T19:43:48 <+Steffanx> Don't make him rage dekar :P
2013-06-03T19:45:30 <+Steffanx> *-:P
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2013-06-03T20:16:56 <+dekar> Didn't someone build (or talk about) an STM32(F3) SDR? I wonder whether you get jitter problems if you connect a parallel DAC and feed it directly from USB. Also I wonder about the USB high-speed throughput.
2013-06-03T20:18:22 <+Steffanx> was probably emeb
2013-06-03T20:26:34 < emeb> Never tried directly driving DAC from USB.
2013-06-03T20:27:12 < emeb> but yes - you need some sort of sample rate tracking or interpolation to keep the jitter under control.
2013-06-03T20:30:16 <+dekar> I guess using FSMC to clock out the data independently could improve things a bit?
2013-06-03T20:31:11 < emeb> depends on what you do to generate the clock
2013-06-03T20:31:36 <+dekar> I mean at least the CPU and interrupts wouldn't get in the way.
2013-06-03T20:31:54 < emeb> you have to assume that the sample rate of the data arriving from the USB is out of sync with the STM32 clock
2013-06-03T20:32:22 <+dekar> emeb, yeah I'd push that to ram for buffering ofc
2013-06-03T20:32:39 < emeb> so you need to regenerate a sample clock based on the amount of data that you get. Generally this means buffering and doing some kind of closed-loop resampling based on the buffer fullness.
2013-06-03T20:33:47 < emeb> For audio there's a defined scheme whereby the USB audio-class output device can feed back data to the host telling it how much data is needed to keep the pipe full.
2013-06-03T20:34:05 < emeb> that way the output device doesn't need to resample.
2013-06-03T20:34:43 < gxti> someday i want to make a nice audio dac
2013-06-03T20:34:57 < emeb> zyp has done some work with that.
2013-06-03T20:35:06 < emeb> IIRC he almost got it working right.
2013-06-03T20:35:11 < gxti> audiophool ones suck, mine underruns if there's any cpu activity at all :[
2013-06-03T20:35:20 < gxti> because it's "asynchronous"
2013-06-03T20:35:30 < emeb> seems like a bad idea.
2013-06-03T20:35:46 < gxti> the idea is the dac determines the clock but apparently it really means "underrun constantly"
2013-06-03T20:36:33 < gxti> but at least the spdif input should work ok, which means i can fix it by making the usb part myself
2013-06-03T20:36:52 < gxti> or if i want more a challenge just replace the whole thing and sell it on ebay
2013-06-03T20:37:07 < gxti> maybe solder some caps on and call it "upgraded" and add 150% markup
2013-06-03T20:37:15 < emeb> heh
2013-06-03T20:37:24 < emeb> so you want to make a usb -> spdif?
2013-06-03T20:37:33 < gxti> yeah, a quality one
2013-06-03T20:37:58 < emeb> hmm...
2013-06-03T20:38:11 < emeb> since that's fully digital it shouldn't be too tough.
2013-06-03T20:38:33 < emeb> just bit ya know.
2013-06-03T20:38:38 < emeb> bits
2013-06-03T20:38:52 < gxti> yeah, it's a matter of collecting enough motivation to do it
2013-06-03T20:39:02 < gxti> can use f4disco for testing
2013-06-03T20:39:09 < emeb> ya
2013-06-03T20:39:26 < emeb> there are fairly easy-to-use I2S->S/PDIF converters.
2013-06-03T20:40:14 < gxti> i don't actually care about spdif, it just means i wouldn't have to put together an acceptable dac myself
2013-06-03T20:40:24 <+dekar> isn't there an ST USB-AC97 example? I think those codecs output SPDIF already
2013-06-03T20:40:50 < emeb> don't think STM32 supports AC97 yet
2013-06-03T20:40:52 <+dekar> oh right, i2s is what I meant, not AC97 -.-"
2013-06-03T20:41:05 <+dekar> I got them mixed up
2013-06-03T20:41:16 < emeb> the newest F42x parts may tho
2013-06-03T20:41:34 < emeb> but there is a USB->I2S example. Don't know how good it is.
2013-06-03T20:41:50 < emeb> zyp did a USB->I2S in laks IIRC
2013-06-03T20:42:26 < emeb> here's a spdif transceiver: http://www.cirrus.com/en/products/cs8406.html
2013-06-03T20:42:37 < emeb> err transmitter
2013-06-03T20:43:23 < zyp> http://cgit.jvnv.net/laks_demo/tree/main.cpp?h=usb_audio <- just some simple stuff
2013-06-03T20:44:05 < gxti> is f4 fast enough to resample multiple 96khz streams?
2013-06-03T20:44:39 < gxti> well, i guess i just need stereo
2013-06-03T20:45:27 <+dekar> should be fine, that's not too much data
2013-06-03T20:45:30 < emeb> gxti: depends on how good of a resampler you want.
2013-06-03T20:45:44 < gxti> true, i guess it has to deal with 44100 and friends
2013-06-03T20:45:50 < gxti> not even sure what i want, just spitballing
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2013-06-03T20:45:58 < emeb> I've done a stereo resampler using JOS sinc interpolation that was fairly good.
2013-06-03T20:46:26 <+dekar> linear resampling is good enough :)
2013-06-03T20:46:34 < emeb> you a funny man
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2013-06-03T20:56:48 < rlc> anyone used the stm32 usb library?
2013-06-03T20:58:54 < ddrown> rlc: I'm using the CDC (serial) device part of the stm32 usb library
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2013-06-03T21:16:13 < rlc> ddrown: what was the typical size of the linked code?
2013-06-03T21:17:40 < ddrown> my non-library code is pretty small: text=44916 data=2560 bss=5256 bytes=52732
2013-06-03T21:18:21 < ddrown> that's the .elf file
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2013-06-03T21:22:44 < gxti> 45k is small? :P
2013-06-03T21:23:46 < ddrown> heh no, I'm saying of that 45k, most of it is library code :)
2013-06-03T21:27:59 < rlc> ah, no wonder I cannot compile anything with IAR because of size limitation
2013-06-03T21:31:48 < ddrown> ah, I'm using gcc
2013-06-03T21:32:49 < rlc> any IDE?
2013-06-03T21:32:57 < ddrown> not unless you consider vim an IDE
2013-06-03T21:33:40 < rlc> ah ok
2013-06-03T21:34:08 < rlc> how do you debug just using command line?
2013-06-03T21:34:47 < rlc> like live watching the registers?
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2013-06-03T21:36:01 < ddrown> I was just printing to a UART to get USB up
2013-06-03T21:36:09 < ddrown> and now that USB is working, I just print to it
2013-06-03T21:37:00 < rlc> ah ok
2013-06-03T21:37:29 < rlc> so your driver is just like an ftdi232 device?
2013-06-03T21:37:45 < ddrown> more or less, and I wouldn't call it "my driver" :)
2013-06-03T21:39:41 < ddrown> Linux uses the cdc_acm driver for it, while ftdi232 is ftdi_sio
2013-06-03T21:40:10 < ddrown> but the end result it the same, usb serial port
2013-06-03T21:41:03 < Laurenceb_> lunix
2013-06-03T21:45:25 < rlc> I see
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2013-06-03T22:11:10 < Laurenceb_> http://dick.net/images/logo.gif
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2013-06-03T23:28:17 < Tectu> there is nothing worse than people contributing code to your project while they know and understand the stuff better than you do - you cannot tell if it's good or bad
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2013-06-03T23:53:23 < Posterdati> hi
2013-06-03T23:53:25 < Posterdati> I need help configuring mouse in the circle for stm32f107, I modified it for my application, but my pc continues to assign it a mouse device :(
2013-06-03T23:53:47 < Posterdati> I need to know how change usb_desc.c
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--- Day changed Tue Jun 04 2013
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2013-06-04T00:05:20 < gxti> wtf is "mouse in the circle"
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2013-06-04T00:10:30 < Laurenceb_> gxti: a way to troll peta
2013-06-04T00:11:47 < Tectu> gxti, I guess he talks about CircleOS
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2013-06-04T00:14:59 < gxti> and nothing of value was lost
2013-06-04T00:15:07 -!- mode/##stm32 [-o Steffanx] by Steffanx
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2013-06-04T00:28:37 < Tectu> Posterdati, consider using ChibiOS/RT and ChibiOS/GFX >.<
2013-06-04T00:29:02 <+Steffanx> Isn't Posterdati the one who wrote his own 'chibios'?
2013-06-04T00:29:18 < Tectu> then he should port ChibiOS/GFX
2013-06-04T00:29:22 < Tectu> also, why should he use CircleOS then?
2013-06-04T00:29:58 < Tectu> leaving now
2013-06-04T00:30:02 < Tectu> cu folks
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2013-06-04T00:59:17 < Posterdati> Tectu: I've got my own rtos
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2013-06-04T01:18:30 < gxti> can you at least rephrase the question instead of copypasting
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2013-06-04T01:41:05 < Posterdati> gxti: I need to change usb_desc.c to provide an hid interface different from a mouse
2013-06-04T01:45:14 < gxti> Posterdati: i am not familiar with the specifics of usb descriptors but i imagine it can't be that difficult...
2013-06-04T01:47:06 < Posterdati> I tried to change byte 2 with no luck
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2013-06-04T01:48:07 < Posterdati> of the USBD_DeviceDesc array
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2013-06-04T02:33:32 < dongs> sup clones
2013-06-04T02:37:05 < emeb> cloning around
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2013-06-04T02:38:51 < gxti> trying to beat ti webench into submission
2013-06-04T02:39:13 < gxti> in order to open a design i have to sign in, but the signin is broken
2013-06-04T02:39:53 <+Steffann> You return to the login page all the time?
2013-06-04T02:40:22 < gxti> exactly
2013-06-04T02:40:44 < gxti> testing with internet exploder
2013-06-04T02:41:32 < gxti> still crap
2013-06-04T02:42:48 < gxti> want to see how their shit would do this 12v->24v boost but it's sort of hard when it's all fubar
2013-06-04T02:43:33 < gxti> at least i get far enough to see the recommended parts
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2013-06-04T02:50:06 < dongs> weblech
2013-06-04T02:51:49 < capacitor> alright lets get started on to how to solder the msp430 launchpad external crystal
2013-06-04T02:52:16 < dongs> stellaris (RIP) launchpad came with acrystal
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2013-06-04T02:53:21 < dongs> steallaris shit must hav sucked so bad TI had to rename it to Tiva or some crap to try and make it look like they did something new
2013-06-04T02:54:32 < dongs> i wonder if theres cmsis-dap firmware for lancuhpad
2013-06-04T02:57:52 < gnomad> According to a TI engineer, the name change from Stellaris -> Tiva was because  Southeast Asians couldn't pronounce "Stellaris"
2013-06-04T02:58:56 < gnomad> but they changed just enough to really shaft the early adopters
2013-06-04T03:03:40 < dongs> youre trollin rite
2013-06-04T03:04:07 < dongs> haha 1msps adc
2013-06-04T03:04:14 < dongs> and not even a dac?
2013-06-04T03:04:28 < capacitor> launchpad
2013-06-04T03:04:29 < gxti> sterraris
2013-06-04T03:04:43 < dongs> raunchpaddo
2013-06-04T03:04:52 < capacitor> unrucky
2013-06-04T03:05:07 < capacitor> eshutiiemu
2013-06-04T03:05:11 < capacitor> 32
2013-06-04T03:05:35 < capacitor> good processor
2013-06-04T03:05:52 < dongs> lold.
2013-06-04T03:05:59 < dongs> or shall I say rord
2013-06-04T03:06:03 < capacitor> lol
2013-06-04T03:06:44 < dongs> looks like no cmsisdap for launchcrap
2013-06-04T03:06:49 < dongs> i guess they're just fucking useless alltogether
2013-06-04T03:06:56 < dongs> cant even use as debug probe.
2013-06-04T03:07:03 < capacitor> bin-pad
2013-06-04T03:07:17 < capacitor> why even bother when you have the awesomo powar of the stm32
2013-06-04T03:07:28 < dongs> but it was 4.99
2013-06-04T03:07:30 < dongs> couldnt miss out
2013-06-04T03:07:36 < dongs> technically they could have been free too
2013-06-04T03:07:41 < dongs> because i bought with paypal
2013-06-04T03:07:44 < dongs> and TI took 2 months to ship
2013-06-04T03:07:53 < dongs> and paypal charge commitment expired
2013-06-04T03:08:01 < dongs> so tehy had to send me another email "please pay for this"
2013-06-04T03:08:05 < dongs> which I coulda just trashed.
2013-06-04T03:08:11 < capacitor> and the stm32f4 discovery was like $20 and shipped in a few days
2013-06-04T03:08:45 < gxti> speaking of which, time to dig mine out and see if i can make it bleep
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2013-06-04T03:09:05 < dongs> you must be bored
2013-06-04T03:13:39 < dongs> ohh
2013-06-04T03:13:49 < dongs> attn baird http://www.keil.com/appnotes/docs/apnt_232.asp
2013-06-04T03:14:54 < capacitor> freescale are cool
2013-06-04T03:17:06 < capacitor> i remember the good old days
2013-06-04T03:17:08 < capacitor> you know
2013-06-04T03:17:54 < dongs>  iremember when freescale came out wiht M4 parts and i was all excited tehy were awesome and ordered that K30 shit with a huge segment lcd display then  found out they didnt bother including hardfloat
2013-06-04T03:18:23 < capacitor> the good old MC68HC908GP32
2013-06-04T03:18:28 < capacitor> back in the old days
2013-06-04T03:18:29 < dongs> and after figuring that out, I tried using their codewarrior shit which was just some eclipse aids + lots of extra shit and it was ffffuuuuuuuuuuuuu
2013-06-04T03:18:51 < capacitor> i can't even remember what the fuck i used for this, i know i was writing in assembler
2013-06-04T03:18:57 < capacitor> cause the school couldn't afford codewarrior
2013-06-04T03:24:14 < capacitor> the motorola
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2013-06-04T03:51:38 < Sector_0> does anyone know of any good resource where i can get to learn the USB section of the stm32f4 standard library?
2013-06-04T03:52:17 < Sector_0> I am trying to read some of the examples but the source is so scattered and poorly designed that I can hardly understand it
2013-06-04T03:52:37 < Sector_0> let aalone that most the examples are limited to 'certain' applications
2013-06-04T03:54:22 < dongs> lol
2013-06-04T03:54:32 < dongs> yeah, the samples and usb lib are fucking garbage
2013-06-04T03:57:35 < Sector_0> dongs: heh, so have you manage to decipher it?
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2013-06-04T04:00:09 < Supaplex> take the blue pill, just in case.
2013-06-04T04:11:39 < dongs> Sector_0: no, i spent a few hours fucking wiht it then when it got completely broken and made no sense I just used keil usb library instead and it just worked
2013-06-04T04:11:43 < dongs> so I stopped trying to screw with st stuff
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2013-06-04T04:13:30 < Sector_0> sorry about that
2013-06-04T04:13:41 < Sector_0> did anyone answer my question?
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2013-06-04T04:15:19 < dongs> d o n g s
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2013-06-04T04:16:39 < dongs> Sector_01: make up your mind
2013-06-04T04:17:24 < Sector_01> dongs: with what?
2013-06-04T04:17:39 < dongs> joining or leaving :)
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2013-06-04T04:17:48 < dongs> 10:11 < dongs> Sector_0: no, i spent a few hours fucking wiht it then when it got completely broken and made no sense I just used keil usb library instead and it just worked
2013-06-04T04:17:51 < dongs> 10:11 < dongs> so I stopped trying to screw with st stuff
2013-06-04T04:18:21 < dongs> but if you want a fairly clean example (in C++11, no less), you can take ea look at zyps work
2013-06-04T04:18:53 < dongs> http://cgit.jvnv.net/laks/tree/
2013-06-04T04:19:24 < Sector_0> dongs: heh my net just threw a tantrum
2013-06-04T04:19:40 < Sector_0> and c++11 bleh
2013-06-04T04:19:42 < Sector_0> I'll have a look though
2013-06-04T04:19:50 < Sector_0> at least it's better than nothing :/
2013-06-04T04:23:10 < Sector_0> porting this might take nearly as much work as learning the st usb library
2013-06-04T04:23:22 < Sector_0> i'll never learn the usb interface :'(
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2013-06-04T04:23:28 < Sector_0> why st why?!?
2013-06-04T04:23:39 < dongs> haha
2013-06-04T04:33:59 < dongs> i gotta read up how to do named sections in keil and attritues to put stuff there
2013-06-04T04:34:02 < dongs> hmm
2013-06-04T04:34:25 < dongs> oh
2013-06-04T04:34:27 < dongs> it works same as gaycc
2013-06-04T04:34:33 < dongs> Use __attribute__((section("name"))) to place functions and variables in a named section.
2013-06-04T04:37:28 < Sector_0> I wonder if anyone here has ever mixed libopencm3 and st standard stuff
2013-06-04T04:38:18 < Sector_0> liopencm3 seem pretty decent but to learn a whole new API just to implement USB functionality uhhh...
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2013-06-04T04:42:17 < dongs> Sector_0: that and no/complete support for F3
2013-06-04T04:42:24 < dongs> that and renamed interrupt vectors
2013-06-04T04:42:31 < dongs> that and only usably wiht gcc
2013-06-04T04:42:47 < dongs> and some people bitch about the license of it as well
2013-06-04T04:43:01 < dongs> zippe: i was chatting to peabody about lazy fpu saving on freertos
2013-06-04T04:43:38 < dongs> zippe: do you have any input about that? saving for every thread vs markign a thread fpu-save vs lazy saving, any advantage to one of those?
2013-06-04T04:48:53 < zippe> dongs: for the F4, the hardware lazy-save helps, just a nuisance getting context switches right
2013-06-04T04:49:15 < dongs> does it matter much if most threads are doing fpu?
2013-06-04T04:49:24 < dongs> vs just blindly saving for each thread
2013-06-04T04:49:49 < zippe> Once you turn on auto-vectorisation, chances seem to be good that most threads will do it at some point
2013-06-04T04:52:37 < dongs> right but if most threads are using it should I bother with lazy or just save each thread context
2013-06-04T04:53:32 < dongs> save each = save fpu for each
2013-06-04T04:53:51 < dongs> seems to work this way now, not sure if i wanna spend time making it work other way
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2013-06-04T04:58:01 < Sector_0> dongs: oh ok
2013-06-04T05:04:22 < dongs> hmpf, i put crap into RW_IRAM2 (ccm) and gave it the attribute, and keil still has it in 0x200000xx, isnt that wrwong?
2013-06-04T05:04:26 < dongs>     fpuregisters                             0x200000a0   Data        1056  port.o(RW_IRAM2)
2013-06-04T05:04:29 < dongs> or am I reading the map incorrectly
2013-06-04T05:04:41 < dongs> or will it move it to ccm later...? wtf
2013-06-04T05:05:24 < dongs> it makrs it with correct section tho
2013-06-04T05:05:25 < dongs> hm
2013-06-04T05:08:33 < dongs> wtfuuu
2013-06-04T05:09:25 < dongs> Create the scatter file scatter.scat containing the following load region:
2013-06-04T05:09:28 < dongs> haha .scat
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2013-06-04T05:17:28 < dongs> crap i might have to manually edit linker scat script for this :(
2013-06-04T05:43:53 < dongs> start chatting or somethin
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2013-06-04T07:06:06 < dongs> <`nico> raspberry pi looks like someone's first highschool project, beaglebone is actually better performing and more usable
2013-06-04T07:09:43 < R2COM> what is beagleboner
2013-06-04T07:11:20 < dongs> http://www.ti.com/tool/beaglebk?DCMP=dsp-arm-bbblack-130423&HQS=dsp-arm-bbblack-pr-sw
2013-06-04T07:15:54 < upgrdman> 5mm leds often tolerate up to 20mA. what about SMDs? there a bunch of cheap 0603 and 0805 leds on ebay and amazon, with no specs at all. :/
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2013-06-04T07:21:36 < dongs> i have 0805 20mA leds.
2013-06-04T07:27:38 < Supaplex> that's what she said
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2013-06-04T08:15:42 < dongs> who removed chat from the channel
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2013-06-04T08:34:55 < jpa-> upgrdman: usually you don't get much extra light past 10mA anyway
2013-06-04T08:38:40 < emeb_mac> i've got a bunch of beaglebones - both original white and new black. they work pretty well.
2013-06-04T08:39:01 < jpa-> i have one beaglebone
2013-06-04T08:39:11 < jpa-> so far i have plugged it into USB and saw a led blink
2013-06-04T08:39:25 < emeb_mac> which one? (blk / wht)?
2013-06-04T08:40:29 < jpa-> white
2013-06-04T08:41:02 < emeb_mac> I did an FPGA 'cape' for the white: http://ebrombaugh.studionebula.com/embedded/bcc/index.html
2013-06-04T08:41:18 < upgrdman> jpa-: ok
2013-06-04T08:41:19 < emeb_mac> was messing with it yesterday - got an AM transmitter working.
2013-06-04T08:41:45 < upgrdman> emeb_mac: is a cape like a shield, but less gay?
2013-06-04T08:41:54 < upgrdman> ;)
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2013-06-04T08:41:59 < emeb_mac> upgrdman: yeah. still a dumb name
2013-06-04T08:42:11 < emeb_mac> but the interface pins are at least on grid.
2013-06-04T08:42:19 < upgrdman> jpa-: but is it safe to assume 10mA isn't pushing the spec's for an 0805 led?
2013-06-04T08:42:44 < upgrdman> 5ma should be fine for me anyway. i just know what ball park limit im looking at
2013-06-04T08:42:50 < upgrdman> dont know*
2013-06-04T08:43:06 < jpa-> yeah, i think 10mA should be fine for most 0805 leds
2013-06-04T08:43:24 < jpa-> if you really care about it lasting 10 years, maybe you shouldn't buy leds off ebay anyway
2013-06-04T08:43:59 < emeb_mac> When I run blue leds from 3.3V gpio I usually use 330ohm resitstors - they're still bright as heck, but the If/Vf specs suggest they should be running minimal power.
2013-06-04T08:46:37 < jpa-> for some reason blue leds seem to always be of high brightness
2013-06-04T08:49:45 < dongs> huh
2013-06-04T08:49:46 < dongs> i use 100R
2013-06-04T08:49:55 < dongs> cuz thats what I got on reel for "led resistors"
2013-06-04T08:51:11 < R2COM> most of the time I dont use leds since I dont want any fucking lights on my boards
2013-06-04T08:51:17 < R2COM> unless there is a *real* need
2013-06-04T08:51:33 < jpa-> debug led is always necessary :)
2013-06-04T08:51:36 < dongs> my next board im gonna just line perimeter up with leds
2013-06-04T08:51:37 < emeb_mac> use neon instead.
2013-06-04T08:51:50 < dongs> all individually addressable
2013-06-04T08:51:55 < R2COM> and dont forget to put it under a car
2013-06-04T08:52:11 < R2COM> and get some clownass rims you know
2013-06-04T08:52:13 < emeb_mac> oooh - looks like a force field
2013-06-04T08:52:15 < R2COM> and some musica
2013-06-04T08:52:24 < dongs> emeb will provide chiptunez
2013-06-04T08:52:32 < emeb_mac> bleep bloop
2013-06-04T08:53:05 < dongs> I did pretty pro china reordering
2013-06-04T08:53:10 < dongs> I was runnin' out of stuff
2013-06-04T08:53:24 < dongs> shit arrived right as I was packing up teh last shit from previous batch
2013-06-04T08:53:31 < dongs> replcaement shit that is
2013-06-04T08:54:03 < dongs> R2COM / emeb_mac critique plz
2013-06-04T08:54:06 < dongs> http://i.imgur.com/3QlMAFc.png
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2013-06-04T08:55:05 < emeb_mac> "the image you are requesting does not exist or is no longer available"
2013-06-04T08:55:27 < dongs> shit lemme retweet it
2013-06-04T08:55:32 < dongs> must have been NDA
2013-06-04T08:55:38 < dongs> http://i.imgur.com/piEnT20.png
2013-06-04T08:57:56 < emeb_mac> got it that time
2013-06-04T08:58:07 < emeb_mac> what is it?
2013-06-04T08:59:10 < emeb_mac> and what eda tool?
2013-06-04T08:59:23 < emeb_mac> (doesn't look like diptrace)
2013-06-04T08:59:27 < dongs> altium
2013-06-04T08:59:39 < dongs> you were supposed to guess what it is  tho!
2013-06-04T08:59:53 < R2COM> what is that square grid
2013-06-04T08:59:58 < R2COM> I hope it can be removed
2013-06-04T09:00:05 < R2COM> everyone showing pics from altium has that grid
2013-06-04T09:00:26 < dongs> i dont have any grid in my altium
2013-06-04T09:00:27 < dongs> lols
2013-06-04T09:01:07 < emeb_mac> dunno - maybe optoisolators?
2013-06-04T09:01:36 < R2COM> that grey grid on layout pic above
2013-06-04T09:01:49 < dongs> R2COM: i know, im saying my altium screenshots dont have that shit.
2013-06-04T09:02:19 < emeb_mac> ah - so that's not dongs work. someone elses
2013-06-04T09:02:50 < dongs> http://i.imgur.com/tfHs39h.png see, no grids
2013-06-04T09:03:52 < emeb_mac> +1 for hot colors
2013-06-04T09:04:24 < R2COM> -1 for ugly shapes
2013-06-04T09:04:47 < dongs> wat ugly shapes
2013-06-04T09:05:32 < emeb_mac> interesting that the vias in the bga are different sizes
2013-06-04T09:05:54 < dongs> theyre not
2013-06-04T09:06:02 < dongs> the dgnd vias are same size
2013-06-04T09:06:05 < dongs> signal vias are smaller
2013-06-04T09:06:29 < dongs> its a pretty fucked package too
2013-06-04T09:06:35 < dongs> rectangular bga with a hole in center
2013-06-04T09:06:40 < emeb_mac> figured it was signal vs pwr
2013-06-04T09:07:44 < R2COM> seems like you selected area and just poured the shit
2013-06-04T09:08:12 < dongs> its part of board pour, yes
2013-06-04T09:08:16 < R2COM> meh..actually, if it works for your stuff its just fine ;)
2013-06-04T09:08:40 < dongs> why teh fuck wouldnt it work?
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2013-06-04T09:08:57 < R2COM> thats why I'm saying, if it works then fine
2013-06-04T09:09:51 < R2COM> in general for my boards I dont like such pours which might make some copper area be close to some unwanted sensitive signal
2013-06-04T09:10:07 < dongs> its just gnd pour tho, whats it gonna  do
2013-06-04T09:10:08 < R2COM> so I carefully give boundaries for each shape
2013-06-04T09:14:16 < dongs> sure, that pour rectangle is just surrounding all the gnd pins in that package, thats all
2013-06-04T09:14:32 < dongs> im not gonna individually walk it around each pad, thats waht pours are for
2013-06-04T09:14:37 < dongs> so i can make it rectangular and fill it.
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2013-06-04T09:29:10 < dongs> need some moar happyhardcore music
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2013-06-04T09:42:34 < emeb_mac> heard the old stuff so often it's now mehhardcore
2013-06-04T09:44:35 < dongs> yes, fucking annoying
2013-06-04T09:44:46 < dongs> they keep plaing same hsit over nad over
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2013-06-04T10:06:13 < R2COM> http://i.imgur.com/62Z49cW.jpg
2013-06-04T10:08:02 < dongs> ghetto
2013-06-04T10:08:06 < ABLomas> aha
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2013-06-04T10:10:09 < dongs> also minus points for not having tarduino in shot
2013-06-04T10:12:00 < dongs> R2COM: is that C or F
2013-06-04T10:12:19 < R2COM> F
2013-06-04T10:12:43 < Tectu> nice RF magic
2013-06-04T10:13:20 < dongs> you should get them fabbed at jabil, and not in a toaster oven
2013-06-04T10:13:35 < R2COM> sure, if I wanted to
2013-06-04T10:13:43 < Tectu> jabil looks a bit expensive, no?
2013-06-04T10:17:18 < dongs> you should be able to afford their poland facilityt
2013-06-04T10:17:29 < dongs> its "low-cost"
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2013-06-04T12:47:03 < R2COM> niice
2013-06-04T12:47:18 < R2COM> my testchip works
2013-06-04T12:47:47 < R2COM> its pad before soldering
2013-06-04T12:47:50 < R2COM> http://i.imgur.com/C0KOGc7.jpg
2013-06-04T12:48:17 < R2COM> spitting out some frequency
2013-06-04T12:48:18 < R2COM> http://i.imgur.com/uXurxHl.jpg
2013-06-04T12:48:26 < R2COM> http://i.imgur.com/lFidnpU.jpg
2013-06-04T12:48:31 < R2COM> that board from oven before
2013-06-04T12:48:38 < R2COM> http://i.imgur.com/UKVmQ5h.jpg
2013-06-04T12:49:00 < R2COM> bourns high precision resistors were soldered afterwards of course
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2013-06-04T12:51:09 < dongs> wow dude wat is that thing
2013-06-04T12:52:27 < R2COM> some custom asic with test fixtures
2013-06-04T12:52:39 < R2COM> some types of configurable oscillators
2013-06-04T12:52:42 < R2COM> logic buffers
2013-06-04T12:52:47 < R2COM> and all broken out to digital ports
2013-06-04T12:53:12 < R2COM> to test some process limits, and quality of on-chip buffers I designed, to be used in some other projects
2013-06-04T12:53:45 < R2COM> and also to test how rf signal propagates through its internal pads and parasitics, and how clean it makes out
2013-06-04T12:54:41 < dongs> you had a custom asic  fabbed, and you're baking it in a toaster oven?
2013-06-04T12:55:33 < R2COM> some copies which I got I mess around with yea
2013-06-04T12:55:41 < R2COM> here its design in allegro http://i.imgur.com/qVjXJhY.png
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2013-06-04T12:58:08 < dongs> that say 180nm testchip prototype?
2013-06-04T12:58:17 < R2COM> yes
2013-06-04T13:00:05 < dongs> pretty cool
2013-06-04T13:00:16 < dongs> how many millions of $ does it take to do a custom chip?
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2013-06-04T13:01:24 < R2COM> its kinda complicated, depends who kicks in for some additional funding (gov/fab itself for some purposes for someone etc), but in general for someone who just wants it to be done for him it costs really a lot...
2013-06-04T13:01:36 < dongs> yeah.
2013-06-04T13:01:58 < R2COM> I mean really alot, and most of the price is if I am correct big at the beginning
2013-06-04T13:02:03 < R2COM> to get your masks etc
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2013-06-04T13:02:39 < R2COM> later it costs less, but on the long run its still a lot, usually big companies and some small ones with funding from gov/etc do that
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2013-06-04T13:02:59 < R2COM> even with TSMC (Taiwan) it costs a lot
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2013-06-04T13:07:23 < R2COM> now I am going to connect Arduino board to it
2013-06-04T13:07:33 < R2COM> ...that was a joke of course...
2013-06-04T13:07:36 < R2COM> xD
2013-06-04T13:09:57 < Tectu_> so if I have two uint16_t variables, does it take "two address spaces" of 32bit (padding) or does it put them next to each other? I assume that this is a compiler setting?
2013-06-04T13:10:31 < karlp> objdump is your friend.
2013-06-04T13:10:40 < jpa-> they go to same 32 bit slot on arm cortex-m3
2013-06-04T13:10:42 < Tectu_> I hoped that you are :)
2013-06-04T13:10:56 < Tectu_> jpa-, is this determined by the compiler settings?
2013-06-04T13:10:58 < karlp> jpa-: they do?
2013-06-04T13:11:27 < jpa-> karlp: yes, if they are declared next to each other; if there is a 32-bit variable in between, then they need padding
2013-06-04T13:11:39 < jpa-> Tectu_: in part, yeah; but i think what i said is the default
2013-06-04T13:11:48 < zyp> are you talking about stack or in a struct or what?
2013-06-04T13:12:09 < Tectu_> let's go with both cases :)
2013-06-04T13:12:15 < jpa-> i'm talking about structs :)
2013-06-04T13:12:38 < jpa-> compiler may do funny stuff on stack, AFAIK it can even reorder the variables if it wants to
2013-06-04T13:14:15 < karlp> dongs: we priced an asic, and it was in the low hundreds of k, not millions.
2013-06-04T13:14:46 < karlp> can't remember what the volume bits were, nor the process.
2013-06-04T13:14:56 < karlp> but it was much cheaper than I'd expected.
2013-06-04T13:15:10 < karlp> very small asic though, very little on it.
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2013-06-04T13:16:22 < R2COM> well it all really depends on what one wants
2013-06-04T13:16:44 < jpa-> for some very crappy 1µm processes, the price can be only about 50k$
2013-06-04T13:16:51 < karlp> yeah, I was just wanting to say that it wasn't millions just to play.
2013-06-04T13:16:55 < R2COM> its possible to get even cheaper, but then most likely it will big big transistor feature size, shitty design rules, not many metal layers allowed to use etc..
2013-06-04T13:16:57 < R2COM> limitations
2013-06-04T13:17:19 < karlp> which may be totally fine :)
2013-06-04T13:17:47 < karlp> we were looking at I think, 7 transistors, 4 diodes and 8 resistors or something in an asic.
2013-06-04T13:18:01 < R2COM> well... true... if one figured out some application, and figured out he needs 10000 of those units, and its not as efficient to buy industry chips, and it pays.,.. yes why not
2013-06-04T13:18:03 < karlp> to reduce assembly fuckups on some flexipcbs with very tight space requirements.
2013-06-04T13:19:22 < R2COM> hopefully later prices will go even lower
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2013-06-04T13:26:40 < zyp> jpa-, it doesn't even have to put them on the stack
2013-06-04T13:38:44 < R2COM> I'm now finally thinking to buy that mini fridge for solder paste storage
2013-06-04T13:39:19 < R2COM> hm
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2013-06-04T13:53:40 < karlp> this beaglebone black is pretty nice, way better user experience than a fresh new raspi,
2013-06-04T13:53:53 < Tectu_> does it have more power?
2013-06-04T13:54:07 < karlp> plug in mini usb, get an rndis ethernet interface, avahi browseable browser and services, api docs all on board flash drive
2013-06-04T13:54:29 < karlp> I believe so, but not really sure on that to be honest.
2013-06-04T13:55:07 < karlp> also, whoever was laughing at the caps in straight rows on the olimexino boards, the beagleboard black is covered in military straight rows of caps and resistors
2013-06-04T13:55:43 < Tectu_> military straight rows of caps?
2013-06-04T13:55:51 < Tectu_> about what caps are you talking?
2013-06-04T13:55:58 < Tectu_> and you mean military grade caps?
2013-06-04T13:57:32 < zyp> no, as straight as a row of military guys would stand
2013-06-04T14:00:00 < R2COM> sure why not, if they are selected properly
2013-06-04T14:00:59 < Tectu_> karlp, got a picture of what you mean?
2013-06-04T14:01:09 < Tectu_> (I know what you mean - I just want to see it)
2013-06-04T14:01:31 < dongs> sup blogs
2013-06-04T14:03:46 < Tectu_> talking about straight caps
2013-06-04T14:05:04 < Tectu_> karlp, the upper right corner?  http://www.google.ch/imgres?hl=de&biw=1278&bih=915&tbm=isch&tbnid=L0lphee1hUwlNM:&imgrefurl=http://picoboard.pl/beaglebone-black-juz-w-sprzedazy-z-jadrem-linux-3-8/&docid=zhnUt-eAgxJ_PM&imgurl=http://picoboard.pl/wp-content/uploads/BeagleBone-Black-sp%2525C3%2525B3d.jpg&w=486&h=764&ei=vMmtUaKrKM7itQaE2oCYDw&zoom=1&ved=1t:3588,r:66,s:0,i:291&iact=rc&dur=262&page=3&tbnh=192&tbnw=122&start=48&ndsp=25&tx=108&ty=102
2013-06-04T14:05:12 < Tectu_> right link: http://picoboard.pl/wp-content/uploads/BeagleBone-Black-sp%C3%B3d.jpg
2013-06-04T14:05:47 < zyp> that's mostly resistors according to silk
2013-06-04T14:05:57 < karlp> yeah, but the whol eboard there really.
2013-06-04T14:06:16 < karlp> I guess the resistors are current limiting/protection on the inputs?
2013-06-04T14:06:55 < zyp> see the +-shaped set of caps? that's where I assume the SoC is on the other side of the board, and that's proper placement
2013-06-04T14:07:15 < karlp> yeah, that's ok, not really complaining about it.
2013-06-04T14:07:43 < R2COM> it really does not *have* to be placed like that
2013-06-04T14:07:45 < karlp> the other ones are probably directly underneath each edge of the other chips too really.
2013-06-04T14:08:35 < R2COM> maybe they just placed it that way because some center bga pins were vdd, to reduce distance
2013-06-04T14:08:37 < zyp> R2COM, no, but the goal is to make the loops as short as possible
2013-06-04T14:08:45 < zyp> yes
2013-06-04T14:09:24 < dongs> hmm
2013-06-04T14:09:30 < zyp> R2COM, and the reason karlp brought this up is because we were laughing about some silly capacitor placement on another board earlier
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2013-06-04T14:11:30 < R2COM> hm
2013-06-04T14:11:42 < R2COM> if I'm correct those Arms 1GHz are like 15$ or so
2013-06-04T14:12:48 < R2COM> hm thats microprocessor
2013-06-04T14:13:00 < zyp> by the way, do any of you have any experience with NFC?
2013-06-04T14:13:08 < zyp> any recommended chips?
2013-06-04T14:13:52 < Tectu_> no, but I'm interested in why and where you want to use NFC
2013-06-04T14:14:18 < R2COM> Applications: Advanced toys... lol
2013-06-04T14:15:17 < karlp> zyp: nope, but let me know what you choose :)
2013-06-04T14:15:31 < karlp> I was going to get that discovery kit "soon" see how that worked.
2013-06-04T14:16:42 < zyp> the passive tag one?
2013-06-04T14:17:16 < karlp> yeah, it has two parts, one to demo the power harvesting eeprom, that I don't care much about
2013-06-04T14:17:23 < karlp> and the other as a general tag reader board
2013-06-04T14:17:29 < zyp> ah
2013-06-04T14:17:41 < zyp> for now I'm interested in the tag reader part
2013-06-04T14:17:51 < karlp> yeah, that's more interesting to me too.
2013-06-04T14:18:18 < karlp> I got the ID12 rfid thing from sparkfun, but it only reads 125khz tags,
2013-06-04T14:18:23 < karlp> which I thought was more common.
2013-06-04T14:18:25 < zyp> ah, it has a stm32
2013-06-04T14:18:32 < zyp> I need 13.56
2013-06-04T14:18:42 < karlp> so you already hve tags you want to read then?
2013-06-04T14:18:48 < karlp> 13.56 is the "mifare" one right?
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2013-06-04T14:19:23 < zyp> 13.56 is ~everything, including mifare
2013-06-04T14:21:24 < karlp> I brought back some "rfid" tags from singapore, seems they have their own system though :)
2013-06-04T14:22:29 < trepidaciousMBR> Anyone know how to get "__ror" and "__rev" compiling for STM32F4 on GCC?
2013-06-04T14:22:42 < zyp> I ordered some USB reader the other day, turns out it doesn't support ISO/IEC 15693, only 14443
2013-06-04T14:23:24 < zyp> but I see the CR95HF on the discovery boards supports both
2013-06-04T14:23:42 < zyp> should probably pick up a kit or two
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2013-06-04T14:40:09 < zyp> hmm, doesn't look like any of the common distributors have the CR95HF
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2013-06-04T14:40:43 < Laurenceb_> sup
2013-06-04T14:41:29 < zyp> Laurenceb_, hi, ever done any NFC?
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2013-06-04T14:41:51 < Laurenceb_> nope
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2013-06-04T14:42:50 < zyp> just wondering what would be a good reader chip
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2013-06-04T14:46:46 < Laurenceb_> stm32 and sdr
2013-06-04T14:46:49 < Laurenceb_> ftw  :P
2013-06-04T14:47:17 < Tectu> lol
2013-06-04T14:47:59 < Laurenceb_> also:  http://science.slashdot.org/comments.pl?sid=3817837&cid=43903075
2013-06-04T14:48:16 < Laurenceb_> attn Steffanx  ^
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2013-06-04T14:49:02 < dongs> lold
2013-06-04T14:49:29 < Tectu> m(
2013-06-04T14:51:41 < karlp> hooray for a our "free trade" agreement with china.
2013-06-04T14:51:52 < karlp> 56% fees andhandling on a parcel from dx.com
2013-06-04T14:52:04 < dongs> well, so thats what, liek $5?
2013-06-04T14:52:10 < dongs> since everything on dx is fucking cheap t rash
2013-06-04T14:54:20 < Laurenceb_> http://www.drsinfrared.com/
2013-06-04T14:59:10 < karlp> $37 usd on goods, $21 usd on duties here
2013-06-04T14:59:57 < jon1012> gxti, about what I said yesterday, got the sd card working !
2013-06-04T15:00:16 < jon1012> gxti, I just have to use sd v2 cards and not sd v1 ones
2013-06-04T15:00:23 < jon1012> and it works without pullups
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2013-06-04T15:41:02 < Tectu> jon1012, what is an sd card v2?
2013-06-04T15:41:17 < jon1012> sdhc
2013-06-04T15:41:28 < Tectu> aah
2013-06-04T15:41:39 < Tectu> so sdxc is v3 then?
2013-06-04T15:42:09 < jon1012> I guess
2013-06-04T15:44:23 < Tectu> are those official names (the vX) thing or is this your interpretation?
2013-06-04T15:47:44 < jpa-> official AFAIK
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2013-06-04T16:01:19 < Posterdati> hi
2013-06-04T16:03:23 < Tectu> hello Posterdati
2013-06-04T16:03:48 < Posterdati> tectu: still don't know how to configure usb :)
2013-06-04T16:04:37 < Tectu> Posterdati, sorry, I can only help with ChibiOS stuff
2013-06-04T16:05:11 < Posterdati> ok, tx
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2013-06-04T16:54:51 < dongs> tectu the chibios supporter
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2013-06-04T17:02:25 -!- mode/##stm32 [-o Steffanx] by Steffanx
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2013-06-04T17:11:38 < dongs> Steffanx: why u rage on irc users :(
2013-06-04T17:12:34 -!- xpg [~pf@5.179.82.4] has quit [Ping timeout: 276 seconds]
2013-06-04T17:12:36  * Steffanx wonders why you even ask
2013-06-04T17:13:09 < dongs> well..
2013-06-04T17:13:17 < dongs> he does at least do some stm32 shit..
2013-06-04T17:13:20 < dongs> unlike some people in here..
2013-06-04T17:13:58 < zyp> who?
2013-06-04T17:14:10 <+Steffanx> Anyway, I'm not going to discuss it here
2013-06-04T17:14:15 < dongs> fine :(
2013-06-04T17:14:19 < zyp> oh, missed the ban
2013-06-04T17:14:25 < dongs> can we have a vote in #stm32-crap?
2013-06-04T17:14:59 < dongs> so yea
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2013-06-04T17:15:18 < dongs> trying to read up on keil scatter files (linker scripts for gnooooouuuuu people0
2013-06-04T17:15:38 < dongs> seems like a lot of work to put something into ccm, where I should be just clicking something
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2013-06-04T17:25:36 < dongs> wow that was easy
2013-06-04T17:26:04 < dongs>     fpuregisters                             0x10000000   Data        1056  port.o(ccm)
2013-06-04T17:26:07 < dongs> tada!
2013-06-04T17:26:41 < dongs> http://bcas.tv/paste/results/Dm3c4M84.html
2013-06-04T17:28:44 < gxti> slightly uglier than gnu ld, which is still ugly. of course, if it's generated who cares...
2013-06-04T17:29:18 < dongs> i only had to add line 16
2013-06-04T17:29:30 < dongs> the rest was auto
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2013-06-04T17:57:39 <+Steffanx> When you change something in your gui it messes up that file again dongs?
2013-06-04T17:57:50 <+Steffanx> as in, removes line 16
2013-06-04T17:59:01 < dongs> no, i generated it once
2013-06-04T17:59:06 < dongs> then told it to use that file.
2013-06-04T17:59:14 < dongs> and its part of project now.
2013-06-04T17:59:21 < dongs> before, if you dont use custom section nmames, its all auto
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2013-06-04T19:06:59 < rlc> How do I choose ADC 2 on a pin that is used for ADC123?  I cannot find where to select which ADC number to associate to that particular pin
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2013-06-04T19:11:16 < dongs> ?
2013-06-04T19:11:28 < dongs> when you configure the channel
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2013-06-04T19:12:07 < dongs> ADC_RegularChannelConfig etc
2013-06-04T19:12:13 < jpa-> rlc: the same pin is connected to all ADC converters, they can use it at the same time
2013-06-04T19:12:22 < dongs> you give it ADCx and pin#
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2013-06-04T19:12:37 < jpa-> of course the ADC itself has to know what pin to read
2013-06-04T19:12:37 < dongs> well, that too
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2013-06-04T19:14:43 < rlc> you mean that if the pin is named ADC123, I can read from the pin by all three ADC modules at "same" time?
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2013-06-04T19:15:44 < dongs> yes
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2013-06-04T19:16:24 < rlc> cool! very nice feature
2013-06-04T19:30:25 < jpa-> rlc: there is also an option to interleave the ADC sampling so that you can get 3x the samplerate
2013-06-04T19:31:35 < dongs> so you can sample while you sample
2013-06-04T19:31:39 < dongs> yo, dawg.
2013-06-04T19:32:25 < emeb> xzibit is an embedded coder. who knew?
2013-06-04T19:33:23 < rlc> cool, even better!
2013-06-04T19:35:37 < gxti> inputs are pretty much always shared
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2013-06-04T19:42:05 < dongs> check this out http://bcas.tv/paste/results/lSIoSe43.html
2013-06-04T19:43:03 < gxti> good for you A+
2013-06-04T19:43:19 < dongs> and before you go wahh wahh wahha you didnt do -funroll-loops and -Os, no, it does same shit there.
2013-06-04T19:43:45 < gxti> you forgot -omg-optimized
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2013-06-04T19:44:37 < dongs> --enable-h8
2013-06-04T19:45:06 < gxti> looks like a calling convention thing?
2013-06-04T19:45:10 < dongs> wat?
2013-06-04T19:45:15 < gxti> it's calling a function, yes?
2013-06-04T19:45:20 < dongs> no thats not the point at all
2013-06-04T19:45:32 < dongs> look at lines 44+
2013-06-04T19:45:35 < dongs> and then on 58+
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2013-06-04T19:45:58 < gxti> i don't actually *know* arm instruction set so i don't know if those are equivalent
2013-06-04T19:46:04 < gxti> probably but not necessarily
2013-06-04T19:46:25 < gxti> i really should though :|
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2013-06-04T19:48:49 < dongs> gxti: basically armcc properly picks up that a<<8|b is swapping endianness and uses rev16 instruction in its place
2013-06-04T19:48:57 < dongs> where gcc just blindly does shift + or
2013-06-04T19:49:04 < dongs> resulting in like 900more instructions
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2013-06-04T19:49:57 < gxti> k
2013-06-04T19:50:34 < rlc> what is "armcc"?
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2013-06-04T19:50:44 < gxti> ask google
2013-06-04T19:50:51 < dongs> that, or commercial arm compiler
2013-06-04T19:51:02 < rlc> ah
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2013-06-04T19:51:26 < rlc> from which company?
2013-06-04T19:51:31 < dongs> ARM.
2013-06-04T19:51:32 < gxti> goooooooooogle
2013-06-04T19:51:39 < gxti> you ask it things
2013-06-04T19:51:39 < dongs> lulz
2013-06-04T19:51:41 < gxti> and it tells you
2013-06-04T19:54:23 < gxti> dongs: so why does the __REV16 turn intoa function call and not just an instruction
2013-06-04T19:54:44 < dongs> yeah, that was part2 of the wtf, but im not sure why thats actualyl happening
2013-06-04T19:54:53 < dongs> in gcc cmsis version its not forced to be inline or anything
2013-06-04T19:54:55 < gxti> not-so-intrinsic
2013-06-04T19:55:03 < dongs> but in arm version it is acutallty __inline etc.
2013-06-04T19:55:30 < dongs> soo why it ends up being a call is still puzzling.
2013-06-04T19:56:01 < dongs> but with an amazing compiler like armcc.. who needs intrinsics
2013-06-04T19:56:05 < dongs> it knows what youre doing before you do it.
2013-06-04T19:56:55 < gxti> if i actually got paid to do embedded i'd buy it
2013-06-04T19:57:11 < gxti> but no sense burning my own money on a compiler when gcc mostly works
2013-06-04T19:57:41 < gxti> better to spend it on EDA tools first
2013-06-04T19:57:50 < rlc> dongs: you use armcc?
2013-06-04T19:58:46 < dongs> rlc: yeah. or else how would I get this output??????
2013-06-04T19:59:20 < gxti> irc is hard
2013-06-04T19:59:29 < gxti> so many words...
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2013-06-04T20:00:32 < emeb> saw a funny exchange over on #beagle yesterday - guy was complaining about analog / digital supply design on STM32 Discovery boards
2013-06-04T20:00:49 < emeb> thought the ADCs were too noisy.
2013-06-04T20:01:29 < dongs> no really
2013-06-04T20:01:37 < emeb> conversation shifted to the on-chip PLLs - the collected wisdom there decided that they're actually DLLs because the loop filter caps wouldn't fit on the die and there are no external filter pins.
2013-06-04T20:02:24 < dongs> wheres the punchline
2013-06-04T20:02:30 < rlc> dongs: how much that armcc cost?
2013-06-04T20:02:51 < emeb> No punchline. Just seemed kind of odd to me that they wouldn't be true PLLs.
2013-06-04T20:03:05 < gxti> that was a bad story
2013-06-04T20:03:20 < emeb> I'll try to make it better next time.
2013-06-04T20:03:22 < dongs> emeb, how many mcus you know have pll filter caps
2013-06-04T20:03:29 < dongs> outside i mean
2013-06-04T20:03:30 < emeb> dongs: none
2013-06-04T20:03:33 < dongs> exactly
2013-06-04T20:03:56 < dongs> rlc: http://www.digikey.com/product-search/en/programmers-development-systems/software/2621591?k=MDK-ARM take your pick
2013-06-04T20:04:02 < gxti> i've used a dedicated pll chip before, that didn't have one either
2013-06-04T20:04:34 < emeb> gxti: right - I'm pretty sure that IC PLL designers got over that hurdle a long time ago.
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2013-06-04T20:05:02 < dongs> 2am, bedtitme
2013-06-04T20:05:16 < emeb> FFS - Intel is putting smps inductors on-die now with the latest haswells
2013-06-04T20:05:40 < gxti> yeah but they kind of have the best fab in the world so not exactly a legit comparison :p
2013-06-04T20:06:13 < emeb> just sayin' - it's not impossible to build analog components on die these days.
2013-06-04T20:06:33 < rlc> dongs: thanks
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2013-06-04T21:55:28 < jpa-_> rank these kernings best to worst:  http://koti.kapsi.fi/jpa/stuff/pix/kerning.png
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--- Log closed Tue Jun 04 22:01:05 2013
--- Log opened Tue Jun 04 22:01:11 2013
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2013-06-04T22:04:12 <+Steffanx> [1,3,4], 2 jpa-
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2013-06-04T22:04:19 < Thorn> 3 or 4, but I don't like AR in any of them, too close.
2013-06-04T22:05:06 < jpa-> 1: no kerning  2: my thingie  3: ja 4: libfreetype     i guess there is still work to do :)
2013-06-04T22:05:21 < karlp> only one I don't care much fore is 1.
2013-06-04T22:05:23 < gxti> 4 first, too lazy to rank the rest.
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2013-06-04T22:05:56  * jpa- slaps freenode
2013-06-04T22:06:14 <+Steffanx> Whats the plan jpa- ?
2013-06-04T22:06:35 < gxti> WA is poor on all 4
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2013-06-04T22:07:08 < gxti> eh whatever, i'm not a font nerd
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2013-06-04T22:09:04 < jpa-> Steffanx: to have somewhat nice autokerning in my compressed font thingy
2013-06-04T22:09:33 <+Steffanx> for the dso quad or.. ( i dont know about your compressed font thingy )
2013-06-04T22:09:34 <+Steffanx> ?
2013-06-04T22:09:58 < jpa-> for the eink stuff
2013-06-04T22:10:10 <+Steffanx> Ah :)
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2013-06-04T22:10:30 < jpa-> need big fonts because it has big resolution (not really as big as in the image though, but 60 pixels high or so)
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--- Day changed Wed Jun 05 2013
2013-06-05T00:07:04 < pingo_> has anyone here used fatfs with micro sd card?
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2013-06-05T04:01:59 < Sector_0> does anyone have any working stm32f4discovery cdc example?
2013-06-05T04:02:27 < dongs> is there none in otg usb lib?
2013-06-05T04:02:31 < dongs> or in f4disco samples?
2013-06-05T04:03:03 < Sector_0> nope
2013-06-05T04:03:57 < Sector_0> I checked on google but the one I found don't work right out of the box and it seems a little daunting to try fixing them
2013-06-05T04:14:44 < Sector_0> dongs: yesterday you mentioned that the you got the USB working with keil, is that section of the library available for download?
2013-06-05T04:17:23 < dongs> no, the usb core stuff is closed sores / library
2013-06-05T04:17:30 < dongs> you just write descriptors/user code
2013-06-05T04:23:31 < Sector_0> GAAAAAAFFUUUUUU
2013-06-05T04:27:18 < Sector_0> I'm just 19 and I can guarantee you this USb library is going to give me gray hairs
2013-06-05T04:30:09 < upgrdman> is the usb spec available for $0?
2013-06-05T04:30:16 < dongs> sure
2013-06-05T04:30:47 < upgrdman> i think i read about some dude bit banging usb with an atmega
2013-06-05T04:31:01 < gxti> a minimal elf implementation should be pretty tiny, right? would be handy to make a bootloader that takes elf input
2013-06-05T04:31:19 < gxti> shit's designed to be mmap'd, can't be that hard
2013-06-05T04:35:19 < dongs> elf? like anyone other than lunixfgts use that
2013-06-05T04:35:28 < dongs> what would you do with it?
2013-06-05T04:35:44 < gxti> not much, but slightly useful to have the same file for flashing or debugging
2013-06-05T04:35:57 < dongs> not a problem if you use proper tools to debug, methinks
2013-06-05T04:36:21 < ds2> even linux don't use ELF on the stm32 :P
2013-06-05T04:36:27 < gxti> ds2: wot
2013-06-05T04:36:44 < dongs> i tihnk hes talking about uclunix
2013-06-05T04:36:49 < dongs> what does it use? a.out or something?
2013-06-05T04:36:52 < ds2> FLT
2013-06-05T04:36:58 < gxti> no i think a.out is really super duper turbo dead
2013-06-05T04:37:04 < ds2> no MMU so ELF can be a pain
2013-06-05T04:37:14 < dongs> http://retired.beyondlogic.org/uClinux/bflt.htm
2013-06-05T04:37:23 < ds2> uclinux is all you can run on the stm32
2013-06-05T04:37:27 < gxti> anyway this wouldn't be used at runtime really, just you could plop a .elf file on sd card and it'd flash it. not sure if i'll bother since i already have .hex stuff working.
2013-06-05T04:37:32 < ds2> unless you got a MMU to graft on
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2013-06-05T04:39:12 < dongs> GNU to graft on
2013-06-05T04:39:28 < gxti> time to find some code to steal for fatfs + chibios
2013-06-05T04:39:48 < dongs> there isnt a rip of elmchan fatfs?
2013-06-05T04:39:52 < dongs> for chibidongs
2013-06-05T04:40:04 < gxti> probably at least a thousand
2013-06-05T04:40:54 < upgrdman> i would lol so start if someone made a vmware thinggy for uc's
2013-06-05T04:41:11 < upgrdman> "run windows 7 on your arduino" etc. oh the lulz
2013-06-05T04:41:20 < dongs> was done.
2013-06-05T04:41:24 < upgrdman> wut
2013-06-05T04:41:26 < gxti> someone booted ubuntu on a 8bit i think, took hours to start
2013-06-05T04:41:30 < upgrdman> really?
2013-06-05T04:41:37 < upgrdman> wow
2013-06-05T04:41:42 < dongs> http://hackaday.com/2012/03/28/building-the-worst-linux-pc-ever/
2013-06-05T04:42:01 < dongs> http://dmitry.gr/index.php?r=05.Projects&proj=07.%20Linux%20on%208bit
2013-06-05T04:42:03 < dongs> original link
2013-06-05T04:42:05 < dongs> without aids
2013-06-05T04:42:40 < gxti> how did i miss the SIMM the first time
2013-06-05T04:42:48 < gxti> that is so delightfully awful
2013-06-05T04:42:48 < dongs> ghettosim
2013-06-05T04:46:07 < dongs> someone should port this to stm32
2013-06-05T04:48:40 < dongs> ds2: feeling bored enough?
2013-06-05T04:50:31 < dongs> http://dmitry.gr/index.php?r=05.Projects&proj=08.%20uM0
2013-06-05T04:50:32 < dongs> rofl
2013-06-05T04:51:12 < ds2> :)
2013-06-05T04:54:12 < dongs> http://dmitry.gr/images/Pendant.1.jpg
2013-06-05T04:54:17 < dongs> this guy is a total pro
2013-06-05T04:54:35 < dongs> http://dmitry.gr/images/Pendant.2.jpg
2013-06-05T04:54:59 < dongs> almost beating elmchan
2013-06-05T04:55:25 < gxti> o rite chibios comes with fatfs stuffs
2013-06-05T04:56:14 < upgrdman> lol @ pendants
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2013-06-05T05:05:52 < dongs> Anyone willing to help a newbie? I have a led strip that takes 3x24v and a raspberry pi that can supply 3x5v(through gpio). I can worry about PWM and the like later, but the biggest issue right now is how to actually bring 24v to the strip, while keeping the ability to switch it on and off.
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2013-06-05T05:09:04 < BrainDamage> I'd be tempted to troll using an obscure effect
2013-06-05T05:09:17 < BrainDamage> to make a circuit that would seemingly not work at first glance
2013-06-05T05:09:39 < BrainDamage> like use transformer saturation on pourpose to make a switched coil from rpi
2013-06-05T05:09:46 < BrainDamage> so the noob would have his working circuit
2013-06-05T05:10:03 < BrainDamage> and the "pros" in the rpi community would wtf a bit
2013-06-05T05:10:12 < dongs> haha,  pros in rpi community
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2013-06-05T05:21:24 < dongs> ooo
2013-06-05T05:21:32 < dongs> abracom has 3225 8mhz xtals
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2013-06-05T05:36:08 < dongs> emeb_blog
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2013-06-05T06:57:23 < dongs> Maker Conference Tokyo 2013 will be held on June 15, 2013 (Saturday), to stimulate ideas for future works and provide opportunities for new collaborations! Eric Pan, the CEO of Seeed Studio, will be at the conference and give a speech. Don’t miss the opportunity to meet Eric and other makers in person.
2013-06-05T07:28:17 < GargantuaSauce> sounds like an unmissable opportunity for you
2013-06-05T07:33:09 < gxti> fatfs bootloader working, not too special considering i basically went back to the bootloader code i originally ripped off for ethernet loader
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2013-06-05T08:04:24 < Tectu> morning
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2013-06-05T13:23:51 < karlp> gxti: contiki uses elf for loadable modules over the air, or at least, it claims to. I haven't used that bit myself yet.
2013-06-05T13:24:55 < jpa-> nuttx is supposed to dynamically load elf nowadays also
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2013-06-05T16:02:21 < Tectu> jpa-, does nuttx then run those elf modules in a user space or still in kernel?
2013-06-05T16:02:34 < Tectu> afaik the cortex has no memory segmentation :P
2013-06-05T16:05:44 < zyp> sure you can
2013-06-05T16:06:13 < zyp> you can use the MPU to restrict user mode threads from touching kernel space memory
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2013-06-05T16:32:35 < dirty_d> hello
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2013-06-05T16:52:31 < jpa-> Tectu_: i think it can run either, but the user/kernel mode separation in nuttx is still quite new and untested
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2013-06-05T16:59:34 < Tectu_> okay
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2013-06-05T17:08:47 < gxti> elf is just a file format, using it doesn't automatically imply virtual memory or whatever
2013-06-05T17:09:16 < gxti> all i'd be using it for is a way to load crap into flash, just like .hex, but with the added convenience of being the same binary you give to gdb
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2013-06-05T17:09:53 < zyp> true
2013-06-05T17:11:08 < dirty_d> whats a simple circuit to generate a painful but safe shock? lol
2013-06-05T17:11:19 < dirty_d> i wanna make laser tag with "tactile feedback"
2013-06-05T17:11:28 < karlp> dirty_d: bbq starters?
2013-06-05T17:11:49 < dirty_d> PWM into an audio transformer?
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2013-06-05T17:14:36 < bairdy_> piezo spark thingies?
2013-06-05T17:14:53 < dirty_d> what would the actual voltage step up be though for a 1.2K/8 transformer its 80 ohms / 8 ohms DC and 810 turns/80 turns
2013-06-05T17:15:04 < gxti> those aren't really 'circuits', they're mechanical devices
2013-06-05T17:15:04 < dirty_d> it would go by turn ratio right?
2013-06-05T17:15:22 < dirty_d> so the voltage would be stepped up about 10.1 times?
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2013-06-05T17:33:14 < Posterdati> hi
2013-06-05T17:33:30 < Posterdati> why there's not USBD_HID_ReceiveReport?
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2013-06-05T21:22:23 < pingo_> hi
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2013-06-05T21:26:48 < dirty_d> zyp_, did you finish your quadcopter?
2013-06-05T21:27:04 < zyp_> nah
2013-06-05T21:27:20 < dirty_d> me neither
2013-06-05T21:27:35 < dirty_d> I got sidetracked and now I have no motivation
2013-06-05T21:27:50 < gxti> me too, except s/quadcopter/every project ever/
2013-06-05T21:27:56 < gxti> :D:D:D
2013-06-05T21:27:56 < dirty_d> same here, lol
2013-06-05T21:28:08 < dirty_d> I rarely finish things
2013-06-05T21:28:22 < gxti> i'm actually making progress on my ntp server still, slowly
2013-06-05T21:28:39 < gxti> but i have 8 boards from an older revision that are as done as they'll get and yet i can't even be bothered to put them up for sale
2013-06-05T21:29:41 < dirty_d> maybe ill finish this laser tag
2013-06-05T21:29:48 < dirty_d> its a lot easier than a quadcopter
2013-06-05T21:30:02 < dirty_d> I'm gonna use an stm32f051
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2013-06-05T21:55:19 <+Steffanx> dirty_d, i started with that once.. a laser tag :)
2013-06-05T21:55:43 <+Steffanx> but it turned out to be no fun as gun like toys are forbidden here
2013-06-05T21:57:51 < dirty_d> norway?
2013-06-05T21:58:06 <+Steffanx> The Netherlands
2013-06-05T21:58:09 < dirty_d> oh right
2013-06-05T21:58:17 < jpa-> what about remote control like toys?
2013-06-05T21:58:42 <+Steffanx> Actually, actually.. that's allowed
2013-06-05T21:59:02 < dirty_d> Steffanx, what if you just made them not in the shape of a gun?
2013-06-05T21:59:03 <+Steffanx> Its even allowed since a few days/weeks to take a camera with you
2013-06-05T21:59:12 <+Steffanx> Then it's allowed dirty_d, but that's no fun
2013-06-05T21:59:29 < dirty_d> im going to make mine give you a nasty shock when you get hit
2013-06-05T21:59:33 <+Steffanx> :)
2013-06-05T21:59:39 < dirty_d> people will play more seriously that way
2013-06-05T21:59:47 <+Steffanx>  + clips?
2013-06-05T21:59:51 < dirty_d> yea
2013-06-05T21:59:56 < dirty_d> and not prace around out in the open
2013-06-05T22:00:02 < dirty_d> prance*
2013-06-05T22:00:20 < dirty_d> well the will, once...
2013-06-05T22:00:28 < dirty_d> and maybe only play once, lol
2013-06-05T22:00:37 < dirty_d> and maybe try to hurt me
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2013-06-05T22:00:57 <+Steffanx> haha
2013-06-05T22:01:15 <+Steffanx> And you dont need people with a bad heart
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2013-06-05T22:01:39 < dirty_d> as long as you just make the shock go within a hand or something it should be pretty safe
2013-06-05T22:01:47 < dirty_d> i dont think youd have any current in the heart
2013-06-05T22:02:15 < dirty_d> like have an electrode on the front and back of the grip
2013-06-05T22:02:48 -!- mode/##stm32 [-q *!*@gateway/web/freenode/ip.128.243.253.113] by Steffanx
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2013-06-05T22:03:41 < dirty_d> the optics work pretty damn good, I used a 89mm lense with a 476mm focal length and LEDs with a 5 degree half-intensity angle
2013-06-05T22:04:03 < dirty_d> from one end of my apartment to the other i cant see any beam divergence
2013-06-05T22:04:17 < dirty_d> I wonder how much it will diverge at about 100 meters
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2013-06-05T22:05:12 <+Steffanx> You're going to get some 'high' power 5mm IR leds i guess?
2013-06-05T22:05:38 < dirty_d> yea I already have them, I got 5mm red ones too so i can see how it works
2013-06-05T22:07:09 <+Steffanx> You should implement some wireless mesh-ish network for realtime data for the viewers.
2013-06-05T22:07:24 <+Steffanx> Just because you can
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2013-06-05T22:07:31 < dirty_d> used this, http://www.mouser.com/ds/2/311/FH4545_Pb_free-226127.pdf
2013-06-05T22:07:59 < dirty_d> I also ordered two 980nm 100mW laser diodes off ebay, lol
2013-06-05T22:08:04 < dirty_d> sniper rifles
2013-06-05T22:08:05 <+Steffanx> 100mW :D
2013-06-05T22:08:17 < dirty_d> expanded to a beam of about 80mm 100mW isnt that much
2013-06-05T22:09:18 < dirty_d> I probably wouldnt run it at full power anyway
2013-06-05T22:09:30 <+Steffanx> I dont want to be a party pooper, but can't you get sued for everything in the US?
2013-06-05T22:09:37 < dirty_d> yea
2013-06-05T22:09:41 < dirty_d> but this is just to use with friends
2013-06-05T22:09:47 < dirty_d> not to sell or anything
2013-06-05T22:09:56 < dirty_d> wasnt even my idea, lol
2013-06-05T22:10:04 <+Steffanx> but still, you never know who's watching your laser show.
2013-06-05T22:10:21 <+Steffanx> Nah, you like 'dangerous' ( looking at your copter )
2013-06-05T22:10:28 < dirty_d> this is true
2013-06-05T22:10:50 < dirty_d> if it cant hurt you, it's not fun
2013-06-05T22:10:59 < BJfreeman> big business in product liability
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2013-06-05T22:57:26 < Sector_0> has anyone compared libopencm3 with the stm32f4discovery standard library?
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2013-06-05T23:27:55 < Sector_0> also is it possible to use the stm32f4discovery as a high speed device without external hardware?
2013-06-05T23:28:23 < Sector_0> I've seen couple mentions about needing external hardware but it seems to only apply in host mode
2013-06-05T23:28:26 < Sector_0> ...not sure
2013-06-05T23:28:38 < ddrown> Sector_0: device mode is limited to full speed as well
2013-06-05T23:29:04 < Sector_0> ddrown: oh ok thanks
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2013-06-06T00:23:59 < upgrdman> reading the f0 datasheet. table 13 defines what the pins can do. table 14 defines the alt functions BUT it only enumerates the AFs for GPIOA and GPIOB, despite table 13 listing AFs for GPIOC and GPIOD. wtf?
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2013-06-06T01:34:03 < ossifrage> can someone point me to a cortex-m0 delay loop (in gcc inline assembly?)
2013-06-06T01:34:49 <+dekar_> ossifrage, the maple lib has one
2013-06-06T01:36:15 < ossifrage> dekar_, I thought the maples where M3s or M4s?
2013-06-06T01:37:15 <+dekar_> oh right - could still work though
2013-06-06T01:37:38 < ossifrage> I have for for the M3/M4, but it uses instructions not on the m0
2013-06-06T01:39:17 <+dekar_> ossifrage, https://github.com/gbulmer/openstm32sw/blob/d70fe3fd9266ffc8602b8cd8d5190f90992194af/stm32f4/libmaple/libmaple/delay.h#L17
2013-06-06T01:39:49 <+dekar_> I've never worked with m0, aren't they thumb as well?
2013-06-06T01:40:11 < ossifrage> Error: immediate expression requires a # prefix -- `subs r2,1'
2013-06-06T01:41:40 < ossifrage> Error: instruction not supported in Thumb16 mode -- `subs r0,#1'
2013-06-06T01:42:46 <+dekar_> never heard of thumb16
2013-06-06T01:43:31 < ossifrage> the m0's have a tiny instruction set
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2013-06-06T01:46:33 < ossifrage> the few times I've looked at them, I've always found the arm instructions set docs rather lacking
2013-06-06T01:47:51 <+dekar_> you can probably just replace the subs with a sub and a cmp
2013-06-06T01:51:50 < ossifrage> the docs I'm looking at seem to say that there is an instruction of the form I'm trying, but gcc no-likey
2013-06-06T01:52:02 <+dekar_> I'd say sub r0, #1 and cmp r0, #0
2013-06-06T01:55:10 <+dekar_> if that doesn't work try bne instead of bhi
2013-06-06T01:55:39 <+dekar_> or just write it in C and disassemble it :)
2013-06-06T01:56:30 < ossifrage> that is what I did, but I didn't have a good feel for the cycle counts
2013-06-06T01:57:10 <+dekar_> just benchmark it
2013-06-06T01:57:40 < ossifrage> (I still don't have things setup to do much more then run basic code on the m0)
2013-06-06T01:58:22 <+dekar_> have the systick go off every second and see how many cycles it has done
2013-06-06T01:59:17 < ossifrage> eventually I'll use the cycle counter, but I just needed something that wasn't effected by compiler flags
2013-06-06T02:00:43 <+dekar_> ossifrage, not sure what you mean, disassembled C code inserted as inline assembly wouldn't be affected either
2013-06-06T02:02:03 < ossifrage> yeah, so I'm using code from disassembled C, which is fine, but I'd rather understand what was going on and what the cycle counts are without having to resort to measuring it
2013-06-06T02:03:01 < ossifrage> like why the manual seems to say that 'subs r0, r0, r1' is a valid instruction, but gcc says no-sir
2013-06-06T02:03:36 <+dekar_> ossifrage, you'd have to do that anyway, given that the branches flush the pipeline and executing from flash the prefetcher affects performance
2013-06-06T02:03:50 < ossifrage> pipeline on a m0?
2013-06-06T02:04:00 <+dekar_> ossifrage, 3 stage pipeline
2013-06-06T02:04:44 < ossifrage> so there might be wait-states on the flash, but everything else should be fully deterministic?
2013-06-06T02:04:58 <+dekar_> also the m0 seems to only support a subset of thumb, thus I guess it just doesn't do the -s suffix
2013-06-06T02:05:25 < ossifrage> SUBS R4, R4, R1 ; subtract the least significant words
2013-06-06T02:05:26 <+dekar_> ossifrage, the stm32 has a prefetcher for flash execution
2013-06-06T02:05:39 <+dekar_> ossifrage, use sub and cmp like I suggested
2013-06-06T02:05:40 < ossifrage> that is a line from the stm32 cortex-m0 instruction set
2013-06-06T02:05:58 < ossifrage> but gcc doesn't like it, which is my big wtf right now....
2013-06-06T02:06:46 <+dekar_> ossifrage, are you enforcing thumb1 code generation? maybe the -s variants are 32bit opcodes
2013-06-06T02:07:29 < ossifrage> I'm compiling with -mcpu=cortex-m0 and -mthumb, without -mthumb it won't compile at all
2013-06-06T02:08:31 < ossifrage> without -mthumb: error: target CPU does not support ARM mode
2013-06-06T02:12:15 <+dekar_> maybe subs r0, r0, #1?
2013-06-06T02:13:00 < ossifrage> what I don't understand is I see subs in the generated code...
2013-06-06T02:16:30 <+dekar_> http://stackoverflow.com/questions/6409449/apple-as-assembler-arm-thumb-adds-instruction
2013-06-06T02:16:39 <+dekar_> seems to be a bug
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2013-06-06T02:17:50 <+dekar_> adding ".syntax unified" seems to be a workaround though
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2013-06-06T02:18:27 <+dekar_> what's your toolchain?
2013-06-06T02:18:52 < ossifrage> launchpad arm gcc build
2013-06-06T02:19:16 < ossifrage> gcc-arm-none-eabi-4_7-2013q1-20130313-linux.tar.bz2
2013-06-06T02:20:46 < ossifrage> yeah,so I can't seem to take some instructions from the disassemble and paste them into asm("...") and have it compile
2013-06-06T02:21:16 <+dekar_> try syntax unified?
2013-06-06T02:21:29 < ossifrage> that produces a right shitstorm
2013-06-06T02:21:55 < ossifrage> (thousands of errors for every line after that in the tmp .s file
2013-06-06T02:23:27 < ossifrage> (I would have thought inline assembly would have its own scope for syntax options)
2013-06-06T02:24:08 <+dekar_> how about making a separate .s and just linking it?
2013-06-06T02:24:54 < ossifrage> I could do that, but inline assembly is much less icky and this is just a bloody delay loop, glad I'm not doing something more involved
2013-06-06T02:27:33 <+dekar_> or you could use sub and cmp instead
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2013-06-06T02:33:36 <+dekar_> ossifrage, http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0473c/BABJIHGJ.html
2013-06-06T02:34:22 <+dekar_> subs probably just has a different mnemonic for pre-UAL Thumb.
2013-06-06T02:34:51 < ossifrage> the weird thing is that it can't assemble what it disassembles
2013-06-06T02:35:09 < ossifrage> which is badly broken in my book
2013-06-06T02:36:10 <+dekar_> ossifrage, it does - same opcode for different mnemonics
2013-06-06T02:36:30 <+dekar_> actually I feel like thumb1 always updates the status flags anyway
2013-06-06T02:36:43 <+dekar_> so subs is probably just sub in the old syntax
2013-06-06T02:36:52 <+dekar_> give it a try, I suspect it works
2013-06-06T02:37:36 <+dekar_> actually, try "sub" then disassemble and see whether it reads subs in the new syntax
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2013-06-06T02:39:25 < ossifrage> ah, good call, the cmp instruction goes away in the disassemble
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2013-06-06T03:40:38 < dongs> http://www.engadget.com/2013/06/05/fujitsu-intros-lifebook-uh90-ultrabook/ fuck yea
2013-06-06T03:40:41 < dongs> attn zyp
2013-06-06T03:47:01 <+dekar_> dongs, still looking for a quadcore ultrabook
2013-06-06T03:51:13 < dongs> no, looking for somethign with a highrez sccreen
2013-06-06T03:51:33 < dongs> that isnt gimped or a fucking faglet
2013-06-06T03:51:58 <+dekar_> well I want both, quadcore and highres screen :)
2013-06-06T03:52:22 < dongs> duno i think my panasonic is i7 quadcore
2013-06-06T03:52:24 < dongs> never checked
2013-06-06T03:53:05 < emeb1> prolly dualcore + HT
2013-06-06T03:53:16 < dongs> CF-R9
2013-06-06T03:53:17 < dongs> looking at cpu
2013-06-06T03:53:43 < dongs> http://ark.intel.com/products/43562/Intel-Core-i7-620UM-Processor-4M-Cache-1_06-GHz
2013-06-06T03:53:47 < dongs> yeah dualcore/thread
2013-06-06T03:54:32 < emeb1> looks like 4, performs like 2.5 or something
2013-06-06T03:55:03 < dongs> the only thing that sucks dick about that laptop is of course the screen
2013-06-06T03:55:22 < emeb1> 1900x1080?
2013-06-06T03:55:27 < dongs> ha ha
2013-06-06T03:55:28 < dongs> i fucking wish
2013-06-06T03:55:30 < dongs> 1024sx768
2013-06-06T03:55:37 < emeb1> >choke<
2013-06-06T03:55:45 < emeb1> that's pretty lo
2013-06-06T03:56:48  * dekar_ wants an actual quad core :)
2013-06-06T03:57:24 < dongs> what for? youre just gonna run lunix on it
2013-06-06T03:57:28 < dongs> utilizing barely half of one core
2013-06-06T03:57:38 < dongs> whats the other 3.5 gonna do?
2013-06-06T03:57:48 < gxti> wut
2013-06-06T03:57:54 < dongs> wut wut in the butt
2013-06-06T03:58:03 < dongs> when was hte last tiem you saw lunix actually make use of multiple cores
2013-06-06T03:58:14 < dongs> other than when miles of compile garbage were scrolling by the screen
2013-06-06T03:58:17 < dongs> i.e. shit normal people dont do
2013-06-06T03:58:42 < gxti> is there some particular thing you think makes linux not use multiple cores?
2013-06-06T03:58:52 < gxti> i mean i *know* you're talking out of your ass, but i'm curious
2013-06-06T03:58:58 < gxti> also i don't care what normal people do
2013-06-06T03:59:01 <+dekar_> dongs, shit takes hours to compile on my core2
2013-06-06T03:59:03 < gxti> normal people can buy a mac
2013-06-06T03:59:15 < dongs> dekar_: stop compiling then
2013-06-06T04:00:06 <+dekar_> dongs, stop breathing then, so I don't have to listen to your trolling anymore :P
2013-06-06T04:00:50 < gxti> unfortunately he types them
2013-06-06T04:01:03 < gxti> otherwise we wouldn't notice because this is irc and it doesn't carry sound PRAISE JEBUS
2013-06-06T04:01:10 <+dekar_> gxti, suffocating helps with that nonetheless :)
2013-06-06T04:01:49 <+dekar_> I don't care for dedicated graphics, but a CPU I actually use once in a while
2013-06-06T04:02:06 < gxti> i like desktops.
2013-06-06T04:02:44 <+dekar_> too heavy :/
2013-06-06T04:02:59 < gxti> you could just compile stuff IN THE CLOUUUUUDDDD lol no never mind.
2013-06-06T04:03:23 <+dekar_> I would totally do that if my internet at work wouldn't suck
2013-06-06T04:03:45 <+dekar_> which is pretty ironic given that we sell fibre optics equipment
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2013-06-06T04:16:29 < emeb1> meh - I do most of my work lately in Matlab and it costs extra to multi-thread Matlab. :P
2013-06-06T04:17:04 < zippe> Windows mostly uses multiple cores to run botnets
2013-06-06T04:18:13 < gxti> and/or virus scanners which are all nearly useless
2013-06-06T04:18:14 < emeb1> something useful!
2013-06-06T04:18:57 < gxti> oh and apparently some crap from work VPN even though i closed it hours ago
2013-06-06T04:20:02 < dongs> zippe, wonder why noone runs botnets on lunix? cuz noone uses it
2013-06-06T04:20:10 < gxti> sounds like a feature dongs
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2013-06-06T06:10:24 < johntramp> hi, for iterating through an array is there any advantage of using unsigned int to int other than the maximum value?
2013-06-06T06:14:10 < johntramp> ah, "For loops signed integers as counters and limits are a tad faster because in C the compiler is free to assume that overflow never happends. "
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2013-06-06T06:48:07  * ds2 fills a shotgun shell with solder balls and shoots it in the air
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2013-06-06T07:13:38 < dongs> sup
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2013-06-06T07:14:32 < dongs> johntramp: i noticed code size reduction when using int vs uint8_t for iterator
2013-06-06T07:18:21 < johntramp> yes, using a 32bit int is faster too as there is no masking required
2013-06-06T07:18:51 < johntramp> interesting that code size was reduced as well
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2013-06-06T07:29:07 <+dekar_> dongs, you probably want a 8bit arduino for your uint8_t needs :)
2013-06-06T07:29:15 < bairdy> Well it's using registers as-is, with probably a few RISC combined conditional instructions thrown in.
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2013-06-06T08:50:10 < R2COM> interesting
2013-06-06T08:50:14 < upgrdman> anyone here have a rigol ds4000 scope? is it possible to save one waveform, and compare it to another spit-screen or overlaid?
2013-06-06T08:50:40 < R2COM> when I connect usb cable to st-linkV2 through some Rocketfish USB HUB it says Error in initializing St-link device
2013-06-06T08:50:51 < R2COM> but it works if I directly connect usb cable to PC port
2013-06-06T08:53:48 < dongs> rocketfish, sounds legit
2013-06-06T08:54:03 < upgrdman> if your using linux (i know... mot likely) you could run dmesg and see if anything looks weird at the end
2013-06-06T08:54:17 < upgrdman> is the hub powered?
2013-06-06T08:54:17 < R2COM> then why this shit doesnt work
2013-06-06T08:54:24 < R2COM> no not powered
2013-06-06T08:54:30 < dongs> thats your problem
2013-06-06T08:54:36 < upgrdman> do you have a powered one you could try?
2013-06-06T08:54:45 < R2COM> it actually can be powered too
2013-06-06T08:55:12 < R2COM> but I dont want fucloads of cables on my desk
2013-06-06T08:55:40 < R2COM> Xilinx programmer works ok with it
2013-06-06T09:00:19 < upgrdman> well since youre having a problem. try it powered. reduce the possible problem areas...
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2013-06-06T09:11:43 < R2COM> nah..no extra ccables for hub. I just connected extender to another port, it works well and fine
2013-06-06T09:12:23 < R2COM> hmmm also... maybe I should throw in that Jlink thingy on the next equipment order...
2013-06-06T09:12:24 < R2COM> hmm
2013-06-06T09:12:40 < R2COM> will see
2013-06-06T09:14:50 < dongs> wat jlink thingy
2013-06-06T09:15:20 < R2COM> that programmer/debugger
2013-06-06T09:19:06 < dongs> yea i know
2013-06-06T09:19:10 < dongs> why wouldnt you have one is the question
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2013-06-06T09:51:21 < Tectu_> dongs, didn't you once say you live in osaka?
2013-06-06T09:51:56 < dongs> i was there for about 6 hours, sure.
2013-06-06T09:52:10 < Tectu_> hmkay
2013-06-06T10:04:12 < R2COM> why are you so curious whre he lives
2013-06-06T10:04:27 < R2COM> dongs: maybe he wants to send his hot sister to your place?
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2013-06-06T10:44:58 < zyp> Tectu_, are you going to visit dongs?
2013-06-06T10:45:11 < Tectu_> zyp, nope
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2013-06-06T13:36:06 < dongs> https://youtube.com/watch?v=9QLOjAL1uA8 attn zyp
2013-06-06T13:42:30 < dongs> this place is so dead without laurenceb
2013-06-06T13:43:18 < karlp> this too will come to pass
2013-06-06T13:43:33 < karlp> it is foretold, he will return to us.
2013-06-06T13:43:45 < dongs> hopefully
2013-06-06T13:47:06 < zyp> dongs, wtf
2013-06-06T13:51:36 < dongs> lol
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2013-06-06T14:15:40 < bairdy> Laurenceb will rise again after 3 days and 3 nights
2013-06-06T14:17:51 <+Steffanx> I already told the guard he is free to come in..
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2013-06-06T16:09:38 < Laurenceb> oh hello
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2013-06-06T16:09:43 < dongs> sup
2013-06-06T16:09:43 < Laurenceb> Steffanx unblocked me
2013-06-06T16:09:45 < Laurenceb> wow
2013-06-06T16:09:52 < dongs> you're welcome to chat!
2013-06-06T16:09:59 < Laurenceb> and to troll i hope
2013-06-06T16:10:08 < Laurenceb> thats what irc is for
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2013-06-06T16:10:40 < dongs> you faggot you made htem all quit
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2013-06-06T16:11:14 < Laurenceb> so i got my datalogger back from n00b central
2013-06-06T16:11:14 < Laurenceb> they had managed to rip the connector off the pcb
2013-06-06T16:11:14 < Laurenceb> giving intermittent contact - seems to explain the glitches
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2013-06-06T16:12:49 < Laurenceb> they cant take my troll level
2013-06-06T16:13:46 < Laurenceb> im sick of n00bs
2013-06-06T16:14:02 < Laurenceb> looks like they walked over the usb jack
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2013-06-06T16:19:07 < dongs> hm, i need like interactive resistor divider shiz
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2013-06-06T16:19:29 < dongs> i have 1K pot and I wanna adjust output between like 1.2V..0.5V
2013-06-06T16:19:35 < dongs> (from 3.3 input
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2013-06-06T16:20:29 < gxti> you mean calculating the resistor values to offset it?
2013-06-06T16:20:36 < dongs> yeah
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2013-06-06T16:20:42 < dongs> well, one is known, its 1k trimpot
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2013-06-06T16:21:03 < dongs> fuckk, theres a java applet that does it
2013-06-06T16:21:06 < dongs> and of course i dont have java
2013-06-06T16:21:23 < gxti> seems pretty easy
2013-06-06T16:21:30 < dongs> ya im just lazy
2013-06-06T16:21:33 < dongs> maybe ill just do a excep
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2013-06-06T16:21:37 < dongs> excel thingy
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2013-06-06T16:22:52 < gxti> current = (1.2 - 0.5) / 1k
2013-06-06T16:23:31 < gxti> then just divide into the volts needed on the low and high side to get resistors
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2013-06-06T16:35:02 < dongs> sparkfun has a reverse calculator here https://learn.sparkfun.com/tutorials/voltage-dividers/ideal-voltage-divider but of course its broken
2013-06-06T16:35:05 < dongs> awesome.
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2013-06-06T16:37:09 < gxti> don't tell me you spent all that time looking for a calculator
2013-06-06T16:37:27 < dongs> im too lazy to do the reverse math, so yes
2013-06-06T16:37:31 < dongs> but no i wasnt looking for it all that time
2013-06-06T16:38:05 < dongs> i think ill do 1K/75R
2013-06-06T16:39:36 < Laurenceb> you fail big time
2013-06-06T16:39:42 < dongs> if I was a true opensauce fgt, i would have made a interactive R1/R2 slider in pyQT
2013-06-06T16:39:46 < dongs> with antialiased opengl output
2013-06-06T16:40:56 < gxti> i literally already told you how to do it
2013-06-06T16:41:14 < dongs> gxti, you lost me at "divide into the volts" etc shit, so I didnt continue after that.
2013-06-06T16:41:25 < gxti> you are aware of ohm's law yes
2013-06-06T16:41:34 < dongs> sure
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2013-06-06T16:42:05 < gxti> the bottom resistor needs to drop 0.5v, so R = 0.5v / I
2013-06-06T16:43:15  * Laurenceb facepalming
2013-06-06T16:43:23 < Laurenceb> dongs needs to stick to trolling
2013-06-06T16:43:34 < Laurenceb> lurn 2 math
2013-06-06T16:43:36 < dongs> but my R1 is a 1k trimpot
2013-06-06T16:43:41 < Laurenceb> 2+2=  ???
2013-06-06T16:43:43 < dongs> Laurenceb: no, math is too hard
2013-06-06T16:44:09 < Laurenceb> http://www.youtube.com/watch?v=2QamU4-8NUw
2013-06-06T16:44:36 < dongs> does he say anything other than that
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2013-06-06T16:45:08 < dongs> hm
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2013-06-06T16:47:16 < dongs> ok, i think ill just put 1.5K for R1 and 1K trimpot for R2. that'll give me stuff within reasonable range
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2013-06-06T16:47:33 < dongs> and i already have 1.5K on bom so I dont need to get new one
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2013-06-06T17:06:58 < dongs> where teh fuck is the F3 remap table
2013-06-06T17:06:59 < dongs> holy shit
2013-06-06T17:07:09 < dongs> for gpio
2013-06-06T17:08:33 < dongs> is it in RM or datasheet
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2013-06-06T17:16:33 < zyp> datasheet
2013-06-06T17:16:38 < zyp> end of pin chapter
2013-06-06T17:17:00 < zyp> I guess you mean AF table
2013-06-06T17:17:09 < zyp> because there is no «remap» on anything but F1
2013-06-06T17:17:25 < dongs> yeah af table
2013-06-06T17:17:55 < dongs> its ok tho i just opened f303.whatever.h and searched for like GPIO_AF_7 and found the shit
2013-06-06T17:18:00 < dongs> it shows the names of crap in comments
2013-06-06T17:18:11 < zyp> hah
2013-06-06T17:18:41 < zyp> this is why the PDF TOC is neat, makes shit like that painless to find
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2013-06-06T23:14:59 < Laurenceb_> sup trollz
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2013-06-06T23:45:55 <+Steffanx> Not much today Laurenceb_ . Even when you are around it's quiet here, so dongs complains were not valid.
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2013-06-07T00:55:44 < zyp> heh, TI is using saleae logic analyzers, found some screenshots from the software in a datasheet
2013-06-07T00:55:54 < zyp> http://www.ti.com/lit/ds/symlink/trf7970a.pdf <- page 32
2013-06-07T00:58:09 < zyp> they probably only have a logic 8, because on page 36 they switched to something else to have nine lines
2013-06-07T00:58:21 <+Steffanx> Now the question is if it's a real one or a clone from ebay
2013-06-07T00:58:42 < zyp> :p
2013-06-07T00:59:05 < emeb> heh
2013-06-07T00:59:35 < emeb> nasty gradient screencaps
2013-06-07T00:59:40 < zyp> still looking for nfc chips, this one looks nice and is available from digikey
2013-06-07T01:00:07 < zyp> shame the devboard is $99 and based on msp430
2013-06-07T01:00:52 <+Steffanx> Going to hack the public transport system?
2013-06-07T01:00:57 < zyp> http://www.st.com/web/catalog/tools/FM116/SC1444/PF253360 <- this one is much nicer, but I can't find the chip at any distributors
2013-06-07T01:01:05 < zyp> nah
2013-06-07T01:01:54 < karlp> is the PF253360the one on their nfc disco kit?
2013-06-07T01:02:30 <+Steffanx> Is nxp all into nfc too ?
2013-06-07T01:02:42 < zyp> karlp, the reader chip is a CR95HF
2013-06-07T01:02:59 <+Steffanx> *Isn't
2013-06-07T01:03:14 < zyp> Steffanx, yeah, I've heard that NXP are the leading manufacturer for NFC stuff
2013-06-07T01:12:43 < ds2> emeb: did you see the android app to do radio decode with those dongles?
2013-06-07T01:13:24 <+Steffanx> I tried that on an older tablet and failed terribly
2013-06-07T01:13:44 <+Steffanx> ( it was impossible to get the usb stuff functional, even with root )
2013-06-07T01:14:30 <+Steffanx> Unless you're not talking about SDR Touch :)
2013-06-07T01:16:48 < ds2> I am talking about SDR touch
2013-06-07T01:16:50 < ds2> what tablet?
2013-06-07T01:17:04 < ds2> supposely the N7 works well
2013-06-07T01:17:56 <+Steffanx> An relatively old chinese one
2013-06-07T01:18:12 < zyp> sounds like allwinner crap
2013-06-07T01:18:19 < ds2> ah...
2013-06-07T01:18:23 < ds2> or telechip
2013-06-07T01:18:24 <+Steffanx> Probably before the allwinner generation
2013-06-07T01:18:25 < zyp> which is not really comparable to tegra 3
2013-06-07T01:18:27 < ds2> or rockbox
2013-06-07T01:18:34 < ds2> rockchip
2013-06-07T01:18:43 < ds2> or MediaTek :D
2013-06-07T01:19:34 <+Steffanx> infomix ix220
2013-06-07T01:23:43 < emeb> ds2: I haven't seen that.
2013-06-07T01:24:21 < emeb> sounds interesting tho - how did they hook the dongle to android? (iirc most android devices are device or otg)
2013-06-07T01:25:34 < ds2> OTG is fine
2013-06-07T01:25:46 < ds2> use a OTG cable
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2013-06-07T01:30:15 < zyp> emeb, otg is device+host
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2013-06-07T01:59:29 < emeb> I suppose all currently available (ie less than 6mo old) androids are otg
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2013-06-07T02:04:11 < zyp> no
2013-06-07T02:04:33 < zyp> mine, for instance, is not
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2013-06-07T02:04:59 < zyp> or rather, the chipset supports it, but they didn't add vbus generation circuitry to the board
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2013-06-07T02:18:11 < emeb> aha - so this rtl dongle app is going to be of limited use, depending on what the capabilities of your android are.
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2013-06-07T02:33:17 < dongs> does it make sense that something would consume less power but get hotter?
2013-06-07T02:34:37 < dongs> zyp is a harvester
2013-06-07T02:35:40 < zyp> dongs, power in = power out
2013-06-07T02:35:56 < dongs> thats wat im thikning
2013-06-07T02:35:57 < zyp> either as heat or electric current or whatever
2013-06-07T02:36:39 < zyp> temperature is a function of power emitted as heat and thermal resistance
2013-06-07T02:37:20 < zyp> the more thermal resistance you have, the higher the temperature will be for a given power
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2013-06-07T02:37:54 < zyp> and what was that about harvester?
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2013-06-07T03:19:40 < dongs> < zyp> http://www.st.com/web/catalog/tools/FM116/SC1444/PF253360 <- this one is much nicer, but I can't find the chip at any
2013-06-07T03:19:44 < dongs>              distributors
2013-06-07T03:19:46 < dongs> ^ that
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2013-06-07T03:42:28 < zyp> I'm not interested in the eeprom part of it
2013-06-07T03:42:34 < zyp> I just want a decent reader chip
2013-06-07T03:43:10 < zyp> anyway, bedtime
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2013-06-07T05:25:01 < upgrdman_> damn it. just spent 20 minutes debugging just to realize that i forgot that c pointer arithmetic increments/decrements by the datatype size, not by bytes. :/
2013-06-07T05:25:39 < upgrdman_> its a good thing i dont make medical equipment :)
2013-06-07T05:34:08 < dongs> uh..
2013-06-07T05:34:19 < dongs> how the fuck can you NOT know this
2013-06-07T05:34:31 < dongs> get back 2 python 4 u
2013-06-07T05:42:36 < Bird|lappy> dongs, I think he lost track of it more than he never knew it in the first place.  kind of like flying a C172RG after 5000hrs in a B737 and wondering where the landing gear lever moved to
2013-06-07T05:43:14 < GargantuaSauce_> how dare you invalidate a cheap insult
2013-06-07T05:43:22 < GargantuaSauce_> get with the program, man
2013-06-07T05:44:58 < upgrdman_> i knew about it a long time aho
2013-06-07T05:44:59 < upgrdman_> ago
2013-06-07T05:45:04 < upgrdman_> just havnt gone point arith in ages
2013-06-07T05:45:23 < upgrdman_> c was the first lang i learned. it got me hooked. i <3 C
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2013-06-07T05:55:37 < upgrdman> playing around the gpio modes. if i try to output a square wave with 50% duty cycle, it looks perfect in push-pull mode. if i got to open-drain with a pull-up, the square wave looks more like a sawtooth. frequency is ~500kHz. is that normal, and is it because the built in pull-up is very weak?
2013-06-07T05:56:17 < dongs> isnt opendrain for external resistor/whatever
2013-06-07T05:56:40 < upgrdman> maybe. i guess the built in pull ups arent designed to handle that?
2013-06-07T05:56:52 < upgrdman> im not complaining. just poking around and observing
2013-06-07T05:57:49 < GargantuaSauce_> the built in pullups arent quite enough for that sort of rate
2013-06-07T05:58:13 < upgrdman> ok good to know
2013-06-07T05:58:15 < GargantuaSauce_> with some fiddling i got i2c to work with them at maybe half that speed
2013-06-07T05:58:26 < GargantuaSauce_> but external ones are definitely necessary for it to go faster
2013-06-07T05:59:04 < upgrdman> so are the built in ones just meant for switches?
2013-06-07T05:59:34 < upgrdman> btw, the waveform looked like this: http://farrellf.com/temp/open-drain-pull-up.png. 50mhz push-pull on top, 50mhz opendrain/pullup on bottom
2013-06-07T06:01:15 < upgrdman> glad i realized this now. i was planning to layout a board for some i2c mems stuff
2013-06-07T06:01:19 < GargantuaSauce_> you could probably get it looking a bit better if you took steps to minimize the capacitance, in fact it probably works notably better without the scope on it
2013-06-07T06:01:41 < upgrdman> ok
2013-06-07T06:01:50 < GargantuaSauce_> part of the aforementioned 'fiddling' was discovering that it worked without the fucking scope probes on it
2013-06-07T06:01:50 < upgrdman> scope is 15pF input... thats too much?
2013-06-07T06:01:58 < upgrdman> im using a 10x probe
2013-06-07T06:02:31 < GargantuaSauce_> if its actually set to 10x then maybe that's less of a factor
2013-06-07T06:03:00 < upgrdman> ya, the probe is full time 10x, not switchable
2013-06-07T06:03:06 < GargantuaSauce_> ah
2013-06-07T06:03:06 < upgrdman> rigol 500mhz passive
2013-06-07T06:03:17 < GargantuaSauce_> yeah go for like 2-4k pullups then
2013-06-07T06:03:33 < upgrdman> is this one of those thing where a $$$ active probe would give a truer image? (not that i need one...)
2013-06-07T06:04:05 < GargantuaSauce_> perhaps, probably not though
2013-06-07T06:04:24 < upgrdman> k
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2013-06-07T06:12:29 < dongs> Laurenceb-worthy link http://madamenoire.com/260258/15-white-celebrities-you-didnt-know-were-raising-black-children/
2013-06-07T06:13:41 < upgrdman> lol
2013-06-07T06:26:30 < upgrdman> sounds like stm is having wafers made in one place, and tested in another place. is that common? http://www.mouser.com/PCN/7428.pdf
2013-06-07T06:28:22 < emeb_mac> very
2013-06-07T06:29:41 < upgrdman> o ok
2013-06-07T06:31:30 < emeb_mac> attn dongs: http://www.dannychoo.com/en/post/26957/Smart+Doll.html
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2013-06-07T09:36:19 < R2COM> trying now to make EXTI work with PD6, for some reason it doesnt want to toggle
2013-06-07T09:36:27 < R2COM> http://pastebin.com/Jxij4xGP
2013-06-07T09:36:28 < R2COM> http://pastebin.com/Jxij4xGP
2013-06-07T09:36:30 < R2COM> err
2013-06-07T09:36:57 < R2COM> so I basically turn on clocking for syscfg, set IMR,RTSR,FTSR, set NVIC priority and enable it
2013-06-07T09:37:13 < R2COM> and have my  void EXTI9_5_IRQHandler()
2013-06-07T09:37:18 < R2COM> which never enters its state
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2013-06-07T09:37:42 < R2COM> I am reading PR and its 0
2013-06-07T09:38:08 < R2COM> interesting thing is, when i manually toggle it with SWIER , PR reads as 1, however it still does not enter the Interrupt handling routine
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2013-06-07T09:48:52 < dongs> how do i make eclipse load sores associated with built .elf file
2013-06-07T09:48:55 < dongs> for source-level debugging
2013-06-07T09:51:55 < jpa-> use gdb
2013-06-07T09:54:14 < dongs> obviously thats not what i asked
2013-06-07T09:55:11 < R2COM> so I wonder what else am I missing in my EXTI setting
2013-06-07T09:55:46 < R2COM> right now two problems, PR gets set after software interrupt setting, but does not enter the interrupt routine, and also, PR does not get set when I connect my pin to 3.3v
2013-06-07T09:55:56 < R2COM> checking again all tables
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2013-06-07T11:19:01 < R2COM> ooh
2013-06-07T11:19:05 < R2COM> it starts working
2013-06-07T11:19:08 < R2COM> masks...
2013-06-07T11:21:33 < R2COM> nice, it also works with external pin too
2013-06-07T11:21:38 < R2COM> So I messed up the mask
2013-06-07T11:22:24 < R2COM> instead of EXTI->IMR = 0x01; I had to do EXTI->IMR |= (1 << 6);
2013-06-07T11:23:12 < R2COM> and... my code is still 10x less in size than this stdperiph faggotry
2013-06-07T11:25:59 < zyp> that's not hard to achieve
2013-06-07T11:26:06 < zyp> stdperiph is way too verbose
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2013-06-07T13:02:29 < dongs> hm
2013-06-07T13:19:49 < dongs> Laurenceb: find me a 3:1 video switch ic that isnt 5V
2013-06-07T13:19:59 < Laurenceb> NO
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2013-06-07T13:21:22 < dongs> more like SPDT/NO
2013-06-07T13:25:16 < Laurenceb> rzaaaageeee
2013-06-07T13:25:34 < Laurenceb> some perman00b locked my discovery boards in a cupboard
2013-06-07T13:25:42 < Laurenceb> i don't have the right key
2013-06-07T13:26:20 < Laurenceb> seriously going to shoot someone now
2013-06-07T13:40:06 < bairdy> "He's in the corner crying because Mummy took his F4-Discovery from him.."
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2013-06-07T13:46:43 < ABLomas> dongs: maybe 2:1 is enough?
2013-06-07T13:47:17 < dongs> need to switch between input, white, black.
2013-06-07T13:47:20 < dongs> so 3:1 minumum.
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2013-06-07T14:15:34 < dongs> https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash3/s403x403/945779_606608346026847_194492868_n.jpg
2013-06-07T14:29:08 <+Steffanx> Can't agree more on this one dongs :)
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2013-06-07T16:13:07 < Laurenceb> is there a solvent for superglue residue?
2013-06-07T16:13:25 < jpa-> acetone
2013-06-07T16:13:27 < zyp> acetone?
2013-06-07T16:13:55 < Laurenceb> ok, trying :P
2013-06-07T16:15:56 < Laurenceb> that did something...
2013-06-07T16:16:09 < bairdy> GHB. A guy got arrested here a few years ago trying to import a superglue solvent for his Warhammer fig building that was the same chemical as the drug..
2013-06-07T16:24:23 < ABLomas> there's "superglue cleaner" on HK, does not smell like acetone, does not eat your fingers or foam
2013-06-07T16:24:30 < ABLomas> but works slowly
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2013-06-07T17:32:33 < Laurenceb> grumble
2013-06-07T17:32:43 < Laurenceb> had to fix a new plug on
2013-06-07T17:33:01 < Laurenceb> i left a hirose connector too close to drying superglue
2013-06-07T17:33:18 <+Steffanx> uh :S
2013-06-07T17:33:36 < Laurenceb> trollglue
2013-06-07T17:34:03 <+Steffanx> For sure, but that did the superglue do to your connector?
2013-06-07T17:34:09 <+Steffanx> *what
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2013-06-07T17:34:25 < Laurenceb> left a layer of glue over the pins inside
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2013-06-07T17:39:44 < gxti> yeah that's no good, the electrons get stuck and can't flow
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2013-06-07T17:44:45 < Laurenceb> it gets worse
2013-06-07T17:45:01 < Laurenceb> the paedophiles move into the pins after that
2013-06-07T17:47:28 < jpa-> only in your lab
2013-06-07T17:56:32 < Laurenceb> http://capybarasthatlooklikerafaelnadal.tumblr.com/
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2013-06-07T20:28:19 < gxti> silicon labs acquiring energy micro, shenanigans to follow
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2013-06-07T20:36:24 < emeb> that should be hi-larious.
2013-06-07T20:36:46 < emeb> otoh, cortex-mX + rf would be cool.
2013-06-07T20:37:07 < emeb> screw that stooopid 8051 crap
2013-06-07T20:37:07 <+Steffanx> isnt energy micro already working on that? :)
2013-06-07T20:37:29 < emeb> lots of people are working on cortex + RF. but SI has some good tech.
2013-06-07T20:37:59 < gxti> and EM has some nice looking uCs although i still haven't gotten around to trying one
2013-06-07T20:38:24 < gxti> i'd love to make some 6lopan wireless sensors just for funsies
2013-06-07T20:41:52 <+Steffanx> Their markething is funny. This time its not "most efficient" stuff, but "most energy friendly" :D
2013-06-07T20:44:14 < emeb> that's a happy-sounding yet meaningless marketing bullet.
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2013-06-07T20:56:10 < karlp> emeb: ti cc2538 is already cm3+802.15.4
2013-06-07T20:56:17 < karlp> I thought silabs already had one too?
2013-06-07T20:56:27 < emeb> got me
2013-06-07T20:56:33 < karlp> but yeah, the great exodus of 8051 from rf is slowly beginning. joy!
2013-06-07T20:57:07 < karlp> gxti: 6lowpan stuff is what I'm slowlllly working on at home.
2013-06-07T20:57:44 < gxti> so far the only wireless i've tried to do is a pic24 + nrf something a few years back, never got the radio to work
2013-06-07T20:58:10 < gxti> probably gave up too quickly
2013-06-07T20:58:19 < karlp> I've got raw 802.15.4 nodes working with stm32f1 and l1 and mrf24j40 radios,
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2013-06-07T20:58:41 < karlp> currently slowly progressing on a contiki port to get proper 6lowpan and the routing stuff on it instead
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2013-06-07T21:51:48 < ossifrage> Is there a way to convince the F4 timers to only give an overflow update interrupt when up/down counting?
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2013-06-07T22:10:43 < jpa-> ossifrage: when else would they give that?
2013-06-07T22:11:25 < ossifrage> it sounds like you get two update events one on the up overflow and one on the down undeflow
2013-06-07T22:12:01 < ossifrage> I'd like to cut my interrupt load in half and only get one or the other
2013-06-07T22:12:30 < jpa-> ah, you count bidirectionally?
2013-06-07T22:12:52 < ossifrage> my question was about an up/down counter
2013-06-07T22:13:03 < ossifrage> (first time I've tried using them on stms
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2013-06-07T22:13:48 < jpa-> i'm not aware of a way to do that
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2013-06-07T22:20:43 < Ranewen> evening, how can i protect my uc from unothorized reading or programming
2013-06-07T22:20:52 < karlp> you can't.
2013-06-07T22:21:02 < karlp> you can try, but you might as well give up now.
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2013-06-07T22:21:34 < Ranewen> so you think its just a waste of money / time
2013-06-07T22:21:49 < karlp> I do, yes.
2013-06-07T22:21:59 < karlp> you can make it a hassle,
2013-06-07T22:22:02 < ossifrage> some parts have fuse to prevent programming and reading the flash
2013-06-07T22:22:22 < karlp> ossifrage: pretty sure the topic used to have where that was found to be inadequate, and to be possible to work around.
2013-06-07T22:22:23 < Ranewen> if i make a "physical fire" ?
2013-06-07T22:22:36 < Ranewen> on a pcb ?
2013-06-07T22:22:39 < ossifrage> but most of the security features are easily worked around
2013-06-07T22:22:55 < Ranewen> only if you have the bluprints
2013-06-07T22:23:46 < Ranewen> how to make it a "hassle" ?
2013-06-07T22:25:07 < karlp> read the appnotes and refman from st on flash read out protection
2013-06-07T22:25:29 < karlp> I have zero interest in helping you on that one I'm afraid :)
2013-06-07T22:25:59 < karlp> (if you're going down this path, at least make sure that compromising a single device doesn't compromise all the devices)
2013-06-07T22:26:03 < ossifrage> so fused roms could be read with dental x-rays and some image processing
2013-06-07T22:26:35 < ossifrage> how about reading the contents of a flash
2013-06-07T22:26:53 < karlp> there's a long thread on the st forums, that used to be in the topic here, that was all about how it was broken, but I don't have it handy
2013-06-07T22:42:56 < PaulFertser> I've read that topic several times, couldn't see any real proven way to readout a protected flash.
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2013-06-07T22:49:01 < Ranewen> thx
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2013-06-07T23:05:51 < Laurenceb_> supppp
2013-06-07T23:05:57 < Laurenceb_> this is interesting
2013-06-07T23:06:03 -!- akaWolf [~akaWolf@unaffiliated/akawolf] has quit [Ping timeout: 260 seconds]
2013-06-07T23:06:06 < Laurenceb_> i have a "dud" µSD card
2013-06-07T23:07:48 < Tonelock> dead or fake?
2013-06-07T23:13:11 < Laurenceb_> semi dead
2013-06-07T23:13:29 < Laurenceb_> user returned one of my dataloggers
2013-06-07T23:13:42 < Laurenceb_> i'd noticed the card was very slow before i sent it out
2013-06-07T23:14:09 < Laurenceb_> not after 6 months use its basically unusable
2013-06-07T23:14:24 < Laurenceb_> _everything_ takes about 500ms to 1 second to complete
2013-06-07T23:14:35 < Tonelock> chinese card?
2013-06-07T23:14:35 < Laurenceb_> like the built in wear levelling has gone mad or something
2013-06-07T23:14:56 < Laurenceb_> i think so - unbranded 4GB
2013-06-07T23:15:06 < Laurenceb_> i have hundereds of them, the rest are ok
2013-06-07T23:15:14 < Laurenceb_> never seen an issue like this before
2013-06-07T23:15:49 < PaulFertser> Laurenceb_: can you try writing random data to the whole card? I've "recovered" one seriously slow card that way.
2013-06-07T23:15:56 < Laurenceb_> continuous write seems fine, nice and fast
2013-06-07T23:16:10 < Laurenceb_> non continuous is crazy slow
2013-06-07T23:16:21 < Laurenceb_> <PaulFertser>: interesting, thanks
2013-06-07T23:16:28 < Tonelock> Laurenceb- I can understand your concern, when you have products in the field using them
2013-06-07T23:16:31 < Laurenceb_> its at work atm, so ill try monday
2013-06-07T23:17:09 < Laurenceb_> yeah i thought it was the board
2013-06-07T23:17:15 < Laurenceb_> swapped card and its running fine
2013-06-07T23:17:32 < Tonelock> I had a pen drive failure last week- my data became so corrupted it was unretrievable
2013-06-07T23:17:33 < PaulFertser> Those SD cards are such a pita... You can't trust any manufacturer, can't get any reliable source, can't get anything reliable at all. Scary. But cheap.
2013-06-07T23:17:50 < Laurenceb_> maybe a bug in the wear leveller
2013-06-07T23:18:13 < PaulFertser> I've a usb mass storage flash stick that suddenly decided it's permanently read-only...
2013-06-07T23:18:26 < Tonelock> PaulFertser- I bought some of from a trusted shop in Germany and a trusted brand- used it as a memory stick and in 2yrs it has became read only
2013-06-07T23:18:39 < Tonelock> I cannot even read though
2013-06-07T23:19:31 < Tonelock> ^^SD Card
2013-06-07T23:19:34 < PaulFertser> uSD card faq from bunnie (Chumby developer): http://www.bunniestudios.com/blog/?p=2297
2013-06-07T23:20:05 < PaulFertser> One can't trust brand and even the official vendor, read his story about the semi-fake cards.
2013-06-07T23:21:41 < Tonelock> btw, anyone know any good tools under linux to try and retrieve data from a corrupted memory stick?
2013-06-07T23:22:15 < Tonelock> the best windows tools were tried, but I was told it was too badly corrupted
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2013-06-08T02:11:20 < PT_Dreamer> Laurenceb tell us about blue leds?
2013-06-08T02:14:45 -!- PT_Dreamer [~quassel@a95-93-147-120.cpe.netcabo.pt] has quit [Quit: http://quassel-irc.org - Chat comfortably. Anywhere.]
2013-06-08T02:16:32 < Laurenceb_> oh hes gone
2013-06-08T02:17:42 <+Steffanx> Dear PT_Dreamer, you should not shutdown your quasselcore
2013-06-08T02:17:45 < Laurenceb_> http://i72.photobucket.com/albums/i169/timboliki/chav.jpg
2013-06-08T02:18:01 < Laurenceb_> ^typical blue led user
2013-06-08T02:18:23 <+Steffanx> ok whatever, gn
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2013-06-08T04:21:46 < capacitor> what does topic mean
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2013-06-08T04:23:36 < dongs> which part of the topic is unclear to you
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2013-06-08T04:25:41 < capacitor> the z80 thing
2013-06-08T04:25:48 < capacitor> wtf would z80 have to do with stm32
2013-06-08T04:29:43 < dongs> who knows
2013-06-08T04:30:20 < capacitor> like did somebody have a few z80s, don't they sell them on ebay to autistic chip collectors?
2013-06-08T04:30:46 < emeb> z80 processors were (are?) made by ZiLog. zlog is the name of the log bot that watches this channel. Dumb joke.
2013-06-08T04:31:01 < capacitor> ah kool
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2013-06-08T04:31:53 < emeb> We should probably get rid of zlog - the NSA is already logging everything so we just do a FOIA request to get the history.
2013-06-08T04:32:34 < capacitor> maybe one day my insane ramblings could be used against me when I steal a packet of chewing gum from a supermarket
2013-06-08T04:32:39 < capacitor> I'll get life without parole
2013-06-08T04:35:51 < ds2> when?
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2013-06-08T04:38:56 < capacitor> i need to design stm32
2013-06-08T04:43:36 < emeb> design what?
2013-06-08T04:44:41 < capacitor> my own stm32
2013-06-08T04:47:02 < capacitor> idk
2013-06-08T04:49:21 < dongs> design a dong
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2013-06-08T04:49:50 < dongs> emeb: http://semicon.njr.co.jp/eng/product/video_ic/video_switch/NJM2244.html any suggestions on 3.3V verison of this
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2013-06-08T04:51:17 < emeb> dongs: no clue. ADI makes some video switcher stuff, but I've no idea if it's anything like that NJM one.
2013-06-08T04:51:33 < dongs> i think ive seen most of it
2013-06-08T04:52:35 < dongs> i dont think they have anythign 3 way
2013-06-08T04:52:55 < capacitor> dongs what is a dong
2013-06-08T04:53:05 < dongs> thats me
2013-06-08T04:53:12 < capacitor> define a dong
2013-06-08T04:53:34 < dongs> real soon, that will be you
2013-06-08T04:53:53 < capacitor> well thanks I guess
2013-06-08T04:54:12 < dongs> time for some hhc and pcba
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2013-06-08T04:55:25 < dongs> that guy was clearly a troll
2013-06-08T04:57:42 < dongs> http://www.digikey.com/product-detail/en/AD8184ARZ/AD8184ARZ-ND/620890 this would probly work if it wasnt $1000
2013-06-08T04:57:53 < dongs> or trash package
2013-06-08T04:59:27 < dongs> http://www.digikey.com/product-detail/en/ISL59530IKZ/ISL59530IKZ-ND/1879128 lol
2013-06-08T05:01:38 < gxti> dongs: maybe a troll, definitely not too bright. he's been here before.
2013-06-08T05:04:54 < dongs> for somre reason i feel ive seen the nickname before, perhaps trollinf on efnet
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2013-06-08T05:09:39 < R2COM> hammer hammer
2013-06-08T05:26:15 < dongs> where is my fucking xeon. fedex has been out for delivery since yesterday
2013-06-08T05:31:25 < R2COM> delivery guy sold it and bought a hooker
2013-06-08T05:35:38 < dongs> for sure
2013-06-08T05:36:57 < dongs> this jap paste from SMIC i got is way better than zeph stuff
2013-06-08T05:37:00 < dongs> doesnt ball up at all
2013-06-08T05:38:09 < ossifrage> well that is bloody annoying the cortex-m0 doesn't have a cycle counter
2013-06-08T05:38:21 < dongs> uh
2013-06-08T05:38:24 < dongs> DWC_CYCCNT shit?
2013-06-08T05:38:37 < ossifrage> doesn't seem to exist on the m0
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2013-06-08T05:41:23 < ossifrage> which is going to make profiling cpu utilization even more annoying
2013-06-08T05:42:23 < ossifrage> they claim it is 'low power', but they don't exactly make it easy to get to that low power
2013-06-08T05:51:47 < dongs> m0 = no divide instruction, might as well use AVR
2013-06-08T05:52:44 < dongs> oo, xeon is here
2013-06-08T05:53:48 < dongs> finishing up pcba then its party time
2013-06-08T05:56:43 < ossifrage> not having a divide isn't really an issue, but not having the bit field extraction stuff hurts this app
2013-06-08T05:57:07 < ossifrage> but shit, this part is $1.44 in Q10 (or $1.63) in a LQFP48
2013-06-08T05:57:18 < dongs> ...
2013-06-08T05:57:40 < ossifrage> you can't get an AVR with anywhere near the same performance for that kind of price in Q10
2013-06-08T05:58:30 < ossifrage> 64K flash, 8K ram, fairly decent peripherals, lowish power, cheap, but a meh processor
2013-06-08T05:59:24 < dongs> well F103 48lqfp is around 2.something bucks in trays from waveshare.
2013-06-08T05:59:38 < dongs> 128k flash, 20k ram, proper M3
2013-06-08T06:06:00 < ossifrage> yeah, I'm still not quite sure why I decided to go with the M0 when I was picking parts
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2013-06-08T08:56:04 < englishman> dongs: max4618?
2013-06-08T08:58:36 < dongs> i think i looked at that and couldnt figure out what that does
2013-06-08T08:59:47 < englishman> just a multiplexer, 2 banks of 4-to-1
2013-06-08T09:00:25 < englishman> i used it for a video switch, it didn't need an amp or anything
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2013-06-08T09:05:00 < dongs> englishman: but will it switch fast enough on a per-pixel basis
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2013-06-08T09:06:48 < englishman> well the NJR one doesn't give switching time
2013-06-08T09:07:54 < englishman> max4618 states 7ns typ switch time
2013-06-08T09:08:41 < englishman> other than that, no idea
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2013-06-08T09:22:27 < dongs> i know njr has been used to do osd
2013-06-08T09:24:50 < dongs> sounds like it should work, i need > 6mhz
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2013-06-08T10:17:48 < jpa-> lol, someone finally found a use for dso quad ;)   https://github.com/neilstockbridge/QuadPawn/commit/6fa8e927d849eb58a87ccf3caa8bfcea3fe3cb62
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2013-06-08T11:38:59 < R2COM> dso
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2013-06-08T17:13:28 < dongs> 14:55 < englishman> dongs: max4618?
2013-06-08T17:13:36 < dongs> not really sure how that can switch 3 inputs
2013-06-08T17:13:41 < dongs> i keep reading ds and its not making much sense
2013-06-08T17:13:51 < dongs> i have 1 input, and i need to toggle in either white, or black level
2013-06-08T17:13:53 < dongs> and output
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2013-06-08T18:14:20 < englishman> dongs: it has two bit logic input and switches 4 inputs to 1 output, 2 times, X bank and Y bank
2013-06-08T18:14:53 < dongs> yeah, i gather that much
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2013-06-08T18:15:38 < dongs> how does that fit into waht i want though
2013-06-08T18:15:40 < englishman> <dongs> not really sure how that can switch 3 inputs
2013-06-08T18:15:45 < dongs> yeah.
2013-06-08T18:15:54 < dongs> i need to select either A, or B, or C
2013-06-08T18:15:56 < jpa-> it can switch 4 inputs, so why couldn't it switch 3?
2013-06-08T18:16:09 < englishman> 00 = video, 10 = black, 01 = white
2013-06-08T18:16:10 < dongs> but this can only let me choose A or B?
2013-06-08T18:16:20 < jpa-> binary encoding, it's magic
2013-06-08T18:16:22 < englishman> no, A and B are the logic
2013-06-08T18:16:34 < jpa-> 2 bits and 4 choices, how can it be?
2013-06-08T18:16:35 < englishman> here it comes
2013-06-08T18:16:44 < englishman> genius moment
2013-06-08T18:16:52 < dongs> jpa-: did you even look at the fucking datasheet
2013-06-08T18:17:21 < jpa-> didn't have to
2013-06-08T18:17:52 < jpa-> but now that i do, it's plainly enoug in table 1
2013-06-08T18:17:58 < englishman> yes
2013-06-08T18:18:31 < jpa-> dongs: you want to select either X0, X1 or X2.. and you do that by putting a binary code on A and B
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2013-06-08T18:20:10 < dongs> what is X and Y (without numbers) pins?
2013-06-08T18:20:16 < englishman> the outputs
2013-06-08T18:20:57 < dongs> oh, so the other half is syncronous but i dont actually need it
2013-06-08T18:21:01 < englishman> yeah
2013-06-08T18:21:30 < dongs> now it fucking makes sense. i kept looking at the functional diagram on page 1 and wtfing
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2013-06-08T18:23:06 < englishman> yay.
2013-06-08T18:23:16 < englishman> there are smaller chips but this appears to be fastest
2013-06-08T18:23:16 < dongs> apparently it was available in QFN before.
2013-06-08T18:23:30 < dongs> that would have been nice, but then they trashed it in 2002.
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2013-06-08T18:25:23 < dongs> http://www.analog.com/static/imported-files/data_sheets/ADG804.pdf
2013-06-08T18:25:31 < dongs> ah, prety slow
2013-06-08T18:25:31 < dongs> 25ns
2013-06-08T18:25:49 < dongs> now thaT I hit proper category on digikey for that shit
2013-06-08T18:25:50 < dongs> 1x 4:1
2013-06-08T18:26:00 < englishman> yay osdongs progress
2013-06-08T18:26:01 < dongs> 40mhz is still plenty, i only need 6
2013-06-08T18:27:34 < dongs> [x] through hole
2013-06-08T18:27:35 < dongs> check
2013-06-08T18:28:02 < qyx_> finally decided to use 4:1 mux? :X
2013-06-08T18:30:53 < dongs> looks like adg804 will ahve to be it
2013-06-08T18:30:54 < ossifrage> that is annoying the new low power STM32F401x doesn't have a DAC
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2013-06-08T18:44:08 < sterna1> anyone knows when they will be available?
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2013-06-08T18:44:42 < dongs> oft
2013-06-08T18:44:44 < dongs> pft
2013-06-08T18:44:57 < dongs> it took like half a year before F2 was "available" after it was announced
2013-06-08T18:45:11 < dongs> there's new F427/wahtevr shit with sdram that is stil not avilable
2013-06-08T18:45:19 < dongs> probly wont see this 401 shit until next year.
2013-06-08T18:46:15 < gnomad> Shit's not real until findchips/octopart reports availability from multiple vendors.
2013-06-08T18:46:18 < ossifrage> at least it is just a process change and not a new part family
2013-06-08T18:46:41 < dongs> gnomad: yea, exactly
2013-06-08T18:47:04 < ossifrage> and even showing up on octopart isn't worth much
2013-06-08T18:47:41 < ossifrage> I designed a board with an AMS part that magically became un-obtanium between seeing the part and laying out the board
2013-06-08T18:47:59 < ossifrage> ended up having to switch to a more expensive less functional part from TI
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2013-06-08T19:36:04 < BJfreeman> yea!!!  got my first test PCB routed from eagle.  can't wait for CNC to get here
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2013-06-08T19:39:03 <+Steffanx> How you do that when you're bus that can anywhere in the US _BJfreeman / BJfreeman. Mailbox at a post office?
2013-06-08T19:39:12 <+Steffanx> *your
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2013-06-08T20:00:34 < jpa-> Steffanx: your sentence does not parse
2013-06-08T20:01:05 < jpa-> "your bus that can anywhere"
2013-06-08T20:01:44 < gxti> he the entire verb
2013-06-08T20:02:13  * jpa- Steffanx from behind
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2013-06-08T20:07:42 <+Steffanx> Yeah i know jpa-
2013-06-08T20:08:11 <+Steffanx> I should not, try to, change my sentences in the middle of a sentence :)
2013-06-08T20:08:44 <+Steffanx> it should've been: "with your bus that can be anywhere"
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2013-06-08T20:11:54 <+Steffanx> So, i'm very very very sorry mr jpa-
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2013-06-08T20:43:51 < BJfreeman> Steffanx atleast you don't stutter when you type
2013-06-08T20:44:18 <+Steffanx> Heh, yeah
2013-06-08T20:45:53 <+Steffanx> Neither do I when I talk
2013-06-08T20:46:53 < BJfreeman> got over stutter when 13 but when tired still stutter when I type
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2013-06-09T00:40:54 < emeb_mac> har: http://www.kickstarter.com/projects/740956622/blinkytape-the-led-strip-reinvented
2013-06-09T00:45:57 < Laurenceb_> yay
2013-06-09T00:46:00 < Laurenceb_> http://i72.photobucket.com/albums/i169/timboliki/chav.jpg
2013-06-09T00:49:38 < Laurenceb_> ^typical user
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2013-06-09T01:22:55 <+Steffanx> That image is only funny one time Laurenceb_
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2013-06-09T01:37:25 < gxti> if that
2013-06-09T01:42:14 <+Steffanx> Yeah that was a lie, it's not funny at all
2013-06-09T01:44:37 < GargantuaSauce_> maybe if you're 13 and british...
2013-06-09T01:46:15 <+Steffanx> Canadian would work too
2013-06-09T01:46:41 < GargantuaSauce_> we don't have chavs though
2013-06-09T01:47:28 <+Steffanx> ok, gn
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2013-06-09T02:00:07 < emeb_mac> oh, everybody has chavs. they just may not call 'em that.
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2013-06-09T02:38:26 < dongs> sup blogs
2013-06-09T02:38:41 < dongs> < emeb_mac> har: http://www.kickstarter.com/projects/740956622/blinkytape-the-led-strip-reinvented
2013-06-09T02:38:45 < dongs> whaaaaaaaaaaat
2013-06-09T02:38:47 < dongs> 64k
2013-06-09T02:40:09 < Laurenceb_> devvo is on kickstarter
2013-06-09T02:40:26 < qyx_> dongs: put your blinky things on ks
2013-06-09T02:41:01 < Laurenceb_> http://cdn.7static.com/static/img/sleeveart/00/002/557/0000255718_350.jpg
2013-06-09T02:41:09 < Laurenceb_> ^more users for you
2013-06-09T02:41:21 < gxti> still crap
2013-06-09T02:42:04 < Laurenceb_> http://userserve-ak.last.fm/serve/500/61201839/MC+Devvo++Shady+Piez+l.jpg
2013-06-09T02:42:11 < Laurenceb_> theres one in the background see
2013-06-09T02:42:18 < zyp> qyx_, they are not arduino compatible
2013-06-09T02:42:23 < zyp> so they wouldn't sell
2013-06-09T02:42:33 < gxti> well neither is a usb device
2013-06-09T02:42:53 < qyx_> zyp: true
2013-06-09T02:42:58 < gxti> ah apparently it is
2013-06-09T02:43:04 < gxti> i am not an arduino expert
2013-06-09T02:43:14 < qyx_> then he should give it nice name
2013-06-09T02:43:28 < qyx_> something containing "pi", "uino", "ardu" and similar
2013-06-09T02:43:56 < emeb_mac> pi-uino
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2013-06-09T02:44:25 < qyx_> leduino or ardublink should do
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2013-06-09T03:13:45 < dongs> no
2013-06-09T03:13:47 < dongs> they did better
2013-06-09T03:13:50 < dongs> they called it blinkyverse
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2013-06-09T03:13:58 < dongs> probably cuz dongiverse was already taken
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2013-06-09T03:14:31 < englishman> custom light processor
2013-06-09T03:15:07 < englishman> ATMEGA32u4
2013-06-09T03:15:29 < dongs> https://youtube.com/watch?v=knJWK7gcZOY this > blinkyvirse
2013-06-09T03:15:48 < englishman> i knew what that was before i clicked it
2013-06-09T03:15:50 < englishman> also, you are wrong
2013-06-09T03:15:58 < englishman> it is not on kickstarter, and is not arduino
2013-06-09T03:16:22 < dongs> right :(
2013-06-09T03:16:45 < englishman> still cool
2013-06-09T03:16:53 < englishman> but not $64,000 overnight cool
2013-06-09T03:16:54 < dongs> haha windows 8
2013-06-09T03:17:04 < dongs> 'the printer requires your attention, go to desktop to see it'
2013-06-09T03:17:12 < dongs> (printing from metrofaggot pdf viewer)
2013-06-09T03:17:55 < zyp> is that why you love windows 8?
2013-06-09T03:17:56 < qyx_> light processor?
2013-06-09T03:18:10 < qyx_> red light in, blue light out?
2013-06-09T03:19:46 < zyp> dongs, how does the metro stuff behave when you have multiple monitors connected?
2013-06-09T03:19:55 < dongs> zyp, its fucking terrible
2013-06-09T03:20:00 < dongs> it only co mes up on one monitor
2013-06-09T03:20:07 < englishman> yes
2013-06-09T03:20:07 < dongs> you can move it between them by doing win+pgup/down
2013-06-09T03:20:13 < zyp> and blanks out everything else?
2013-06-09T03:20:15 < dongs> but you still cant have 2 metro apps open
2013-06-09T03:20:16 < dongs> nope
2013-06-09T03:20:18 < dongs> just leaves it
2013-06-09T03:20:18 < englishman> i put in classic shell, but the side popins still confound me
2013-06-09T03:20:21 < zyp> ah
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2013-06-09T03:20:47 < zyp> the new fullscreen mode in OS X is equally useless with multiple monitors
2013-06-09T03:20:56 < dongs> apparently trheres a trick with multiple metro apps side by side
2013-06-09T03:20:59 < dongs> i forgot what it was
2013-06-09T03:21:03 < dongs> you 'split' the screen into 2.
2013-06-09T03:21:33 < zyp> or rather, more useless as it blanks out everything else
2013-06-09T03:21:46 < zyp> every fullscreen app turns into a seperate virtual desktop
2013-06-09T03:21:48 < dongs> yeah i could still look at pdf in metroshit and  use other desktop
2013-06-09T03:22:59 < zyp> pretty stupid either way, trying to put tablet fuckery onto a real computer
2013-06-09T03:23:16 < dongs> who the fuck needs more than one monitor anyway
2013-06-09T03:23:23 < dongs> that shit is for newbs.
2013-06-09T03:23:37 < dongs> real pros do all thier work fullscreen on 27" Ifaggot.
2013-06-09T03:23:53 < qyx_> hope that was sarcasm
2013-06-09T03:24:12 < zyp> obviously sarcasm
2013-06-09T03:25:18 < englishman> yes dongs has like 15 ipad screens hanging all around the room and on him
2013-06-09T03:26:36 < gxti> i'm impressed, dongs actually came close to criticizing microsoft
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2013-06-09T03:33:58 < qyx_> which http server do you use together with lwip?
2013-06-09T03:35:05 < gxti> haven't really gotten far enough with http, so far i'm planning on just kludging together something simple.
2013-06-09T03:35:45 < gxti> nearly static html with dynamic stuff fed in through a javascript snippet, make the client do all the work
2013-06-09T03:37:10 < qyx_> yep, i am planning to use something similar
2013-06-09T03:37:59 < qyx_> jquery/jqueryui to make all interface on client side and just transfer simple json structures between client and server
2013-06-09T03:38:07 < zyp> that's what we do on the platform we use at work too
2013-06-09T03:38:07 < gxti> when i last stopped working in my power meter thingy i was trying to get PUTs of the web content blob to work, was getting garbage in the spi flash
2013-06-09T03:38:13 < gxti> kind of lost interest
2013-06-09T03:38:21 < zyp> just static html and json
2013-06-09T03:38:59 < qyx_> i have written something for that already, i am just refactoring it a bit
2013-06-09T03:39:05 < gxti> current plan for content is to use cpio. kinda ugly and no index, but it's fixed size header and easy to seek through.
2013-06-09T03:39:19 < gxti> and not a lot of waste
2013-06-09T03:39:43 < qyx_> i considered romfs
2013-06-09T03:40:00 < gxti> could build an index at runtime or maybe stash it back to the flash, i just like the idea of using a trivial but standard file format
2013-06-09T03:40:13 < gxti> in practice i doubt i'll need it
2013-06-09T03:40:17 < qyx_> need to find out how to include it in linker script
2013-06-09T03:40:42 < zyp> to link it into the elf?
2013-06-09T03:40:46 < qyx_> yep
2013-06-09T03:40:55 < qyx_> i dont like the idea of converting binary files to c-like sources
2013-06-09T03:41:05 < gxti> objcopy maybe?
2013-06-09T03:41:30 < gxti> not sure, my object-fu is modest
2013-06-09T03:41:52 < zyp> objcopy would probably work
2013-06-09T03:42:01 < qyx_> dont know, maybe, but then i need to find out its starting address during runtime
2013-06-09T03:42:10 < zyp> no
2013-06-09T03:42:49 < zyp> you just convert the binary into an elf with a custom section name, then add that section to the linker script and creating a symbol for it
2013-06-09T03:43:08 < qyx_> hm
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2013-06-09T03:43:32 < qyx_> i should try that
2013-06-09T03:44:19 < zyp> actually, objcopy will make symbols too
2013-06-09T03:44:39 < zyp> «You can access this binary data inside a program by referencing the special symbols that are created by the conversion process. These symbols are called _binary_objfile_start, _binary_objfile_end and _binary_objfile_size. e.g. you can transform a picture file into an object file and then access it in your code using these symbols.»
2013-06-09T03:46:40 < qyx_> ok, thx
2013-06-09T03:46:54 < qyx_> going to bed now, i will continue tomorrow
2013-06-09T03:47:10 < zyp> (that was from man objcopy)
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2013-06-09T06:02:33 < dongs> http://www.ebay.com/itm/261219245827 what hte fuck is this
2013-06-09T06:06:48 < zyp> a usb stick preloaded with os x?
2013-06-09T06:07:19 < zyp> apple sells those nowadays, since optical discs are pretty outdated shit
2013-06-09T06:07:32 < zyp> for people who don't want to buy the download edition
2013-06-09T06:07:41 < dongs> is oscrap free or something?
2013-06-09T06:07:56 < dongs> or are 8gb usb sticks like $5
2013-06-09T06:08:52 < zyp> dunno
2013-06-09T06:09:06 < zyp> 10.7 is old, may be dumping old stock or some shit
2013-06-09T06:09:22 < zyp> 10.8 came almost a year ago
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2013-06-09T07:41:14 < t1memob> Fuck assdroid
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2013-06-09T08:12:14 < dongs> sup chat
2013-06-09T08:12:47 < GargantuaSauce_> i have to fire up the arduino ide again >:|
2013-06-09T08:13:13 < dongs> funtimes
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2013-06-09T08:14:42 < GargantuaSauce_> i keep wanting to make a reprap controller based on the f1 or something
2013-06-09T08:14:52 < GargantuaSauce_> if only so that i don't have to deal with this bullshit
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2013-06-09T10:15:57 < jpa-> does someone have a good idea how to organize a test suite, if i want to build a program in various different configurations (#defines, compilers etc.) and would ideally want to test all combinations of those?
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2013-06-09T15:04:24 < zyp> jpa-, I'd do variant builds in scons, making each build configuration a variant
2013-06-09T15:07:50 < dongs> scons more liek scocks
2013-06-09T15:09:04 < zyp> jpa-, http://cgit.jvnv.net/laks_demo/tree/SConstruct?h=multivariant <- kinda like this
2013-06-09T15:09:08 < dongs> dumb question about opensores debuggers
2013-06-09T15:09:17 < dongs> do they lack way to set current instruction pointers
2013-06-09T15:09:21 < dongs> so i could like go back and rerun some code
2013-06-09T15:09:33 < zyp> set $pc = 0xwhatever
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2013-06-09T15:10:46 < zyp> doesn't have to be an address either, expressions work fine
2013-06-09T15:11:30 < zyp> set $pc = $pc - 2 would skip back a 16-bit instruction
2013-06-09T15:30:21 < karlp> "new" gdb even supports reverse stepping doesn't it?
2013-06-09T15:40:05 < karlp> gxti/qyx: contiki webserver has a way where a directory of static content is turned into some magic headers in the make process, seems to work well enough: https://github.com/contiki-os/contiki/tree/master/apps/webserver
2013-06-09T15:40:16 < karlp> (they also have a filesystem style version, but I've not used that)
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2013-06-09T15:46:05 < qyx_> karlp: i did it exactly that way, but it is mess
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2013-06-09T16:29:50 < Tectu_> is there any sane linux software to draw things like this: http://www.ti.com/graphics/blockdiagram/blockdiagram_images/6109.gif
2013-06-09T16:29:57 < Tectu_> without doing the MS paint style
2013-06-09T16:30:18 < dongs> ur a mspaint style
2013-06-09T16:30:28 < dongs> tectu, i suspect its called "visio"
2013-06-09T16:30:34 < dongs> it sure looks like it anyway
2013-06-09T16:30:34 < Laurenceb_> dia
2013-06-09T16:30:37 < Laurenceb_> dia ftw
2013-06-09T16:30:54 < gxti> dia is pretty crappy
2013-06-09T16:30:54 < Laurenceb_> i use it for all my diagrams
2013-06-09T16:31:06 < Laurenceb_> works ok for me
2013-06-09T16:31:16 < gxti> yes, it's "okay"
2013-06-09T16:31:20 < gxti> that's about the nicest thing i can say
2013-06-09T16:31:28 < qyx_> its something like kicad
2013-06-09T16:33:16 < qyx_> Tectu_: try xmind, it has other styles of diagrams besides mind maps
2013-06-09T16:33:18 < qyx_> or simply inkscape
2013-06-09T16:33:43 < qyx_> or visio
2013-06-09T16:34:41 < Tectu_> qyx_, didn't know about xmind
2013-06-09T16:34:46 < Tectu_> qyx_, isn't visio windows only?
2013-06-09T16:35:07 < Laurenceb_> wine ftw
2013-06-09T16:35:10 < Laurenceb_> but seriously
2013-06-09T16:35:17 < Laurenceb_> dia should do for simpleish stuff
2013-06-09T16:36:18 < Tectu_> can you show me one of your diagrams? ^^
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2013-06-09T16:44:20 < Laurenceb_> ok
2013-06-09T16:45:26 < Laurenceb_> http://filedump.org/files/RvG7MuTM1370785518.html
2013-06-09T16:45:52 < Tectu_> dat download delay
2013-06-09T16:50:25 < Tectu_> I hope you didn't put that into your master thesis
2013-06-09T16:51:54 < Laurenceb_> whats up?
2013-06-09T16:52:57 < Laurenceb_> why?
2013-06-09T16:53:46 < Tectu_> you would get killed for that one here
2013-06-09T16:54:16 < Laurenceb_> why?
2013-06-09T16:55:01 < Laurenceb_> wrong style?
2013-06-09T16:57:07 < Tectu_> jup
2013-06-09T16:57:15 < Tectu_> people need shicki-micki glossy stuff here
2013-06-09T16:57:31 < dongs> haha .eps
2013-06-09T16:57:32 < Tectu_> not done in illustrator, not done good
2013-06-09T16:57:47 < dongs> 1986 called
2013-06-09T16:57:52 < dongs> wants its postscript back
2013-06-09T16:57:59 < dongs> next on the news: latex is makign a comeback
2013-06-09T17:06:39 < Laurenceb_> i use it for everything
2013-06-09T17:07:59 < Tectu_> show some more then please
2013-06-09T17:08:05 < Tectu_> but upload at image uploader -.-
2013-06-09T17:08:11 < Tectu_> http://abload.de is a good choice
2013-06-09T17:09:04 < Laurenceb_> why?!
2013-06-09T17:09:15 < Laurenceb_> just download dia and try it out
2013-06-09T17:11:21 < Tectu_> dia looks like what I need
2013-06-09T17:11:25 < Laurenceb_> dongs: postscript is used for everything
2013-06-09T17:11:28 < Tectu_> does anyone of you want to implement splines into ChibiOS/GFX?
2013-06-09T17:11:30 < gxti> i no lwip so good http://partiallystapled.com/~gxti/trash/2013/06/09-tcpcrap.png
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2013-06-09T17:13:05 < dongs> Tectu_: reticluate them
2013-06-09T17:13:45 < Tectu_> dongs, what does that mean? No ideas of how splines "work"
2013-06-09T17:16:01 < Laurenceb_> maths
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2013-06-09T17:16:48 < Laurenceb_> its an interpolation technique
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2013-06-09T17:18:33 < dongs> Tectu_: https://www.google.com/search?q=reticulating+splines
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2013-06-09T17:37:28 < Tectu_> dongs, can you load a .dns into your diptrace to test the autorouter?
2013-06-09T17:37:58 < dongs> dsn you mean?
2013-06-09T17:38:09 < dongs> also, ive used  the autorouter, butthat doesnt mean i'd recommend it.
2013-06-09T17:38:21 < dongs> also, its the other way around
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2013-06-09T17:38:29 < Tectu_> I'd be interested in a result vs. freerouting.net
2013-06-09T17:38:32 < dongs> you export .dsn to feed it to external autorouter
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2013-06-09T17:38:40 < dongs> then import .ses with the results
2013-06-09T17:38:43 < Tectu_> exactly
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2013-06-09T17:48:37 < dongs> eh feescale has a pretty cool assdroid sensor demo app
2013-06-09T17:48:42 < dongs> xtrinsic sensor fusion toolbox
2013-06-09T17:48:52 < dongs> pick local 9 axis, then choose panorama view
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2013-06-09T17:58:22 < gxti> rebuilt web shit on a board with more RAMs and it seems to work
2013-06-09T17:59:08 < gxti> although it sort of looks like the problem is transmitted packets getting lost somewhere, so it could be a hardware issue
2013-06-09T18:10:46 < englishman> whoa, rotate the android device around, like from portrait to landscape.
2013-06-09T18:11:09 < dongs> yea, it still works
2013-06-09T18:11:52 < englishman> trippy
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2013-06-09T19:18:31 < Tectu_> so when the example schematic of a step-down/buck converter says to use a 3.3µF coil, will be 3µF fine as well?
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2013-06-09T19:28:46 < emeb_mac> a 3uF coil would be an interesting feat of physics.
2013-06-09T19:28:56  * emeb_mac is feeling pedantic
2013-06-09T19:34:31 < dongs> lol
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2013-06-09T19:34:48 < dongs> Tectu_: pretty sure you cant get 3uH stuff as easy as 3.3uh
2013-06-09T19:37:09 < emeb_mac> but I'd guess a 10% variation from the design spec probably wouldn't cause horrible problems.
2013-06-09T19:37:41 < emeb_mac> might reduce the max current, or increase the ripple
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2013-06-09T19:45:00 < gxti> looks like my issue was TCP MSS too big for the buffers allocated. the config header didn't mention anything about that, but there was some warning that only showed up with debug messages enabled.
2013-06-09T19:45:05 < gxti> thanks lwip.
2013-06-09T19:49:06 < Tectu_> <emeb_mac> a 3uF coil would be an interesting feat of physics.   <--- please explain. I assume it's some language fault?
2013-06-09T19:49:33 < gxti> Tectu_: you meant 3uH
2013-06-09T19:49:35 < gxti> not uF
2013-06-09T19:49:36 < emeb_mac> Tectu_: uF is a unit of capacitance, not inductance
2013-06-09T19:49:56 < gxti> you could have 3uF of parasitic capacitance i guess, that would still be impressive
2013-06-09T19:50:03 < emeb_mac> yep
2013-06-09T19:50:09 < Tectu_> gxti, ah, right ^^ Sorry, was a typo
2013-06-09T19:50:18 < Tectu_> hehe
2013-06-09T19:50:18 < emeb_mac> :)
2013-06-09T19:50:19 < Tectu_> yeah
2013-06-09T19:50:25 < gxti> yes but some people can't resist needless corrections
2013-06-09T19:50:35 < emeb_mac> just being a dick.
2013-06-09T19:50:41 < Tectu_> Naa, you're correct and it's not trolling so I don't care
2013-06-09T19:50:43 < gxti> although you did take the time to type out µ
2013-06-09T19:50:52 < Tectu_> heh
2013-06-09T19:51:29 < gxti> anyway, usually if you can't get the specified value use the next biggest
2013-06-09T19:51:53 < gxti> 3 vs 3.3 won't really matter though
2013-06-09T19:51:55 < gxti> if you've already got it
2013-06-09T19:52:02 < Tectu_> yeah, and I don't need the max current
2013-06-09T19:52:07 < Tectu_> just like 25% of it
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2013-06-09T19:55:58 < gxti> mmm, now i can pull down the spi flash at 152kB/s
2013-06-09T19:56:05 < gxti> not too shabby for 32K of RAM
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2013-06-09T19:58:38 < Tectu_> is this a sane choice for a crystal for an STM32?
2013-06-09T19:58:41 < Tectu_> http://www.digikey.com/product-detail/en/7A-12.000MAAE-T/887-1743-1-ND/3518793
2013-06-09T19:58:58 < englishman> heh i am seeing those everywhere now
2013-06-09T19:59:07 < gxti> Tectu_: sure
2013-06-09T19:59:52 < Tectu_> gxti, thanks
2013-06-09T20:00:31 < emeb_mac> I've used the 8MHz version of that. works fine, easy to solder
2013-06-09T20:00:45 < gxti> it's the same footprint i use for most things lately
2013-06-09T20:00:55 < gxti> not the exact same part, i use whatever is cheapest
2013-06-09T20:01:30 < Tectu_> emeb_mac, I need it in 8, 12 and 25MHz on my PCB
2013-06-09T20:01:44 < gxti> load caps would be 10-20pf
2013-06-09T20:02:52 < Tectu_> jup, it says 12
2013-06-09T20:03:07 < gxti> the load capacitance of the crystal is not the same thing as the capacitors you add
2013-06-09T20:03:17 < gxti> it's the total capacitance that the crystal wants to see
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2013-06-09T20:03:39 < gxti> including parasitics
2013-06-09T20:03:59 < Tectu_> ah
2013-06-09T20:04:03 < Tectu_> uhm
2013-06-09T20:04:09 < gxti> ends up being something like 2*(x-5) where x is the load capacitance
2013-06-09T20:04:11 < Tectu_> I never understood how to properly evaluate those values
2013-06-09T20:04:17 < gxti> and 5pF being a rough guess for parasitics
2013-06-09T20:04:57 < emeb_mac> it's about 2x because the two caps appear to be in series
2013-06-09T20:04:57 < emeb_mac> so their effective capacitance is about 1/2
2013-06-09T20:05:01 < Tectu_> so is 12 still okay? :D
2013-06-09T20:05:25 < gxti> for this particular value it happens to be in the right ballpark
2013-06-09T20:05:54 < gxti> for 18pf crystals it's more like 30pf caps
2013-06-09T20:06:16 < gxti> but really even if you get it wrong it just means the frequency will be very slightly out, probably not enough to measure without a good counter
2013-06-09T20:08:52 < emeb_mac> zyp had some issues with that in an rf application where the xtal freq got multiplied by some large number
2013-06-09T20:09:15 < Tectu_> what means larger? 2? 3?
2013-06-09T20:09:42 < gxti> rf is when it would actually matter
2013-06-09T20:10:19 < gxti> microcontrollers, ethernet, usb (full speed anyway), nobody cares
2013-06-09T20:10:52 < emeb_mac> don't remember what the carrier freq was - VHF/UHF maybe.
2013-06-09T20:11:10 < Tectu_> yeah, my crystals are actually for two MCUs and a PHY
2013-06-09T20:11:49 < gxti> and if it does turn out to matter the only way to really tune it in is to build it first
2013-06-09T20:12:49 < Tectu_> what does the   -ND   mean on the end of every DigiKey order number?
2013-06-09T20:12:59 < gxti> no discount
2013-06-09T20:13:26 < emeb_mac> north dakota?
2013-06-09T20:14:13 < Tectu_> :<
2013-06-09T20:14:14 < gxti> that's what i used to think but they're not in north dakota :p
2013-06-09T20:16:35 < Tectu_> maybe the parts are ;)
2013-06-09T20:23:28 < emeb_mac> here's the explanation: http://skywired.net/blog/2011/05/farewell-digi-key-catalog/
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2013-06-09T20:28:16 < ossifrage> shit they really kept printing a catalog upto 2011, wow...
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2013-06-09T20:30:36 < Tectu_> so why do they add 'no discount' to every part number?
2013-06-09T20:31:57 < gxti> dunno lol
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2013-06-09T20:38:30 < emeb_mac> I finally threw my DK & Mouser catalogs away. damned things were like 2" thick each/
2013-06-09T20:39:07 < emeb_mac> don't think I ever really used them.
2013-06-09T20:46:31 <+Steffanx> Not even as literature when you're on the toilet? :)
2013-06-09T20:55:07 < Rickta59> http://www.sm0vpo.com/begin/gimmik-0.htm Tectu_
2013-06-09T20:55:27 < Tectu_> Rickta59, my boss teached me that
2013-06-09T20:55:44 < Rickta59> it actually works
2013-06-09T20:56:00 < BrainDamage> don't shake them
2013-06-09T20:56:28 < Rickta59> i didn't say how long :)
2013-06-09T20:56:45 < Tectu_> Rickta59, I know. I used that to get a small capacitance in series of one of my scope probes to measure a fast signal
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2013-06-09T20:59:47 < Rickta59> http://forum.43oh.com/uploads/monthly_05_2013/post-190-0-73348200-1367433668.gif twisty wires
2013-06-09T21:00:02 < Tectu_> exactly
2013-06-09T21:00:15 < Tectu_> GWinstek.... How I hate 'em
2013-06-09T21:00:24 < karlp> Tectu_: in the old days, not everything had a -ND :)
2013-06-09T21:01:03 < Rickta59> luckily i'm a hobbyist with no access to better equipment so i haven't learned to hate :)
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2013-06-09T21:02:19 < Tectu_> karlp, never took a look to DK before
2013-06-09T21:02:29 < Tectu_> Rickta59, be thankful for that :)
2013-06-09T21:03:14 < Tectu_> Rickta59, I have everything from 3k$ to 85k$ scopes at work (not including spectrum and network analyzers etc) and then I have to go home on friday... then the tears start to roll
2013-06-09T21:03:57 < karlp> you're meant to enjoy the weekends taking a break :)
2013-06-09T21:04:02 < Rickta59> you just need a bigger backpack to bring to work
2013-06-09T21:04:58 < Tectu_> hehe
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2013-06-09T21:16:13 < Tectu_> is it just me or are there no 0603 LEDs?
2013-06-09T21:16:26 < Tectu_> they have similar pad dimensions, but none seem to be 0603 declared
2013-06-09T21:16:34 < Laurenceb_> there are some
2013-06-09T21:16:40 < Laurenceb_> but.. few of them
2013-06-09T21:16:48 < gxti> wat
2013-06-09T21:18:25 < Laurenceb_> but yeah, lurn 2 search
2013-06-09T21:18:35 < gxti> 3 pages of in stock 0603 LEDs on cut tape on digikey...
2013-06-09T21:19:05 < Tectu_> link please
2013-06-09T21:19:31 < gxti> what are you clicking on that you DON'T see it?
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2013-06-09T21:22:16 < Tectu_> I am here:  http://www.digikey.com/scripts/dksearch/dksus.dll?pv37=1&pv561=1&pv69=3&FV=fff40008%2Cfff801b9%2C400005&k=LED+0603&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
2013-06-09T21:22:30 < Tectu_> searched for 'LED 0603'
2013-06-09T21:22:54 < gxti> i see lots of stuff. what's the problem?
2013-06-09T21:23:50 < Tectu_> there seems not to be any footprint filter
2013-06-09T21:23:51 < Tectu_> :D
2013-06-09T21:24:03 < gxti> "Package / Case"
2013-06-09T21:24:14 < gxti> 0603 (1608 Metric)
2013-06-09T21:24:21 < gxti> any more stupid questions?
2013-06-09T21:24:26 < Tectu_> where do you see that?
2013-06-09T21:24:28 < Tectu_> seriously.
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2013-06-09T21:25:03 < gxti> the filter isn't showing up because you searched for 0603 and all the matches have the same footprint
2013-06-09T21:25:08 < gxti> but it's in the table
2013-06-09T21:25:24 < gxti> don't go looking for parameters by using the search box though
2013-06-09T21:25:25 < Tectu_> aah
2013-06-09T21:25:41 < gxti> start by clicking on 'LED Indication - Discrete' and filter down
2013-06-09T21:26:08 < Tectu_> there it is
2013-06-09T21:26:08 < Tectu_> thanks
2013-06-09T21:28:30 < flop> is it just me or are there no 0201 LEDs?
2013-06-09T21:36:41 < zyp> 9:09:15 < Tectu_> what means larger? 2? 3?
2013-06-09T21:36:44 < zyp> 154 or so
2013-06-09T21:37:58 < Tectu_> zyp, hum, how did that happen?
2013-06-09T21:38:09 < Tectu_> ah, the series and not the parallel frequency?
2013-06-09T21:38:11 < zyp> what do you mean?
2013-06-09T21:38:35 < zyp> maybe I misunderstood your question
2013-06-09T21:39:02 < Tectu_> just wondering how you got that high factor
2013-06-09T21:39:36 < zyp> ah, forget it, I misunderstood you
2013-06-09T21:40:59 < Tectu_> how comes that huge price difference
2013-06-09T21:41:00 < Tectu_> http://www.digikey.com/scripts/dksearch/dksus.dll?FV=fff40008%2Cfff801b9%2C1c0002%2C400005%2C940001%2C4fc0019%2C8c40001%2C8c40012&k=LED&mnonly=0&newproducts=0&ColumnSort=1000011&page=1&stock=0&pbfree=0&rohs=0&quantity=&ptm=0&fid=0&pageSize=25
2013-06-09T21:41:13 < zyp> anyway, the formula for calculating crystal caps is C1 * C2 / (C1 + C2) = C_L, with C_L being a property of the crystal
2013-06-09T21:41:21 < Tectu_> it somehow looks like the cheapest one is the best?!
2013-06-09T21:41:43 < zyp> and when you select C1 = C2, you get C1 / 2 = C_L, or C1 = C_L * 2
2013-06-09T21:42:05 < gxti> Tectu_: what is 'best'?
2013-06-09T21:42:11 < zyp> so grab the C_L value, double it and round down a bit to accord for trace capacitance
2013-06-09T21:43:07 < Tectu_> thanks zyp
2013-06-09T21:43:38 < Tectu_> gxti, I am just searching for a sane status LED to attach it to any GPIO. I have some dev boards here where the LEDs feel like someone laser-pointering at you
2013-06-09T21:44:20 < gxti> then use a bigger resistor
2013-06-09T21:46:02 < Tectu_> might you still show me a sane 0603 LED for such a purpose?
2013-06-09T21:46:14 < gxti> any of those will be fine
2013-06-09T21:46:24 < gxti> bigger viewing angle means less laser-y
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2013-06-09T21:49:51 < Tectu_> :D
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2013-06-09T22:43:17 < gxti> i guess i need a less lazy http server, it can't parse the request because requests from actual browsers won't fit in a 128 byte segment
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2013-06-09T23:27:29 < Tectu_> OT: http://img.pr0gramm.com/2013/06/k-bigpic.jpg
2013-06-09T23:27:35 < Tectu_> but attn dongs
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2013-06-09T23:35:47 < emeb_mac> cool
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2013-06-10T01:09:25 < johntramp> how (in)efficient is a modulo operation on an STM32F4?
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2013-06-10T01:10:21 < johntramp> I am guessing it isn't something you would want to be doing at over 3000hz
2013-06-10T01:10:49 < johntramp> .....this would be for a ring buffer implementation
2013-06-10T01:12:59 < gxti> 3khz isn't much
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2013-06-10T01:15:11 < johntramp> ok so you wouldn't have a problem using it
2013-06-10T01:15:32 < qyx_> use sizes of 2^n
2013-06-10T01:15:40 < qyx_> you can use simple shift do do modulo this way
2013-06-10T01:15:46 < qyx_> not shift, and
2013-06-10T01:16:21 < johntramp> true, it would be 2**n already
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2013-06-10T02:33:22 <+dekar> I don't think modulo is that expensive anyway
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2013-06-10T02:34:27 <+dekar> doing it 3k times per second shouldn't be a problem
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2013-06-10T02:46:36 < zyp> at least not if that's all you're gonna do
2013-06-10T02:46:54 < Laurenceb_> erm understatement
2013-06-10T02:47:13 < Laurenceb_> anyways check the asm
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2013-06-10T03:06:11 < dongs> maybe if you modulo 3k times per second on a tarduino..
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2013-06-10T03:22:09 <+Steffanx> dongs in dutchland we have this saying: "what the heart thinks, the mouth speaks". This definitely applies to you.
2013-06-10T03:22:16 <+Steffanx> You tend to talk about arduino a lot
2013-06-10T03:23:03 < dongs> cool story, bro
2013-06-10T03:23:36 <+Steffanx> Are you a nigga jappylander?
2013-06-10T03:23:49 <+Steffanx> I've never seen a black jappylander
2013-06-10T03:25:05 <+Steffanx> Anyway, good night "bro"
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2013-06-10T03:45:43 < flop|2> dongs: you like arduino?
2013-06-10T03:47:26 < dongs> wat
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2013-06-10T04:08:11 < flop|2> dongs: you should launch a product line called donguino
2013-06-10T04:08:43 < flop|2> I bet that would sell like hot breads in japan
2013-06-10T04:15:03 < flop|2> ?donguino?
2013-06-10T04:16:12 < dongs> hot breads dont really sell well so i suspect youre right
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2013-06-10T04:22:55 < qyx_> gxti: webserver from cpio working \o/
2013-06-10T04:23:31 < gxti> qyx_: mine too, mostly. still some memory shenanigans.
2013-06-10T04:24:08 < gxti> curl works but if i point a browser at it i get connection reset. if i turn full logging on it works :p
2013-06-10T04:24:26 < qyx_> need to optimize it a bit though
2013-06-10T04:24:43 < qyx_> mine works normally with firefox
2013-06-10T04:24:51 < gxti> how much RAM do you have?
2013-06-10T04:25:00 < qyx_> 4G :>
2013-06-10T04:25:10 < gxti> leet
2013-06-10T04:25:11 < qyx_> developing on x86 now
2013-06-10T04:25:17 < gxti> oh boring
2013-06-10T04:25:41 < gxti> i had the cpio stuff working and tested on x86 already
2013-06-10T04:25:43 < qyx_> but i was trying to avoid copying memory and huge buffers
2013-06-10T04:26:00 < qyx_> the only buffer used is 200char line buffer
2013-06-10T04:26:26 < qyx_> which determines maximum uri length and header length
2013-06-10T04:27:17 < qyx_> ok, bedtime
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2013-06-10T05:15:10 < upgrdman> anyone here use the usart to do rs232?
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2013-06-10T05:15:26 < upgrdman> i've got it kinda working, but it seems to only transmit every ~100th character
2013-06-10T05:16:09 < upgrdman> im using: while(USART1->ISR & USART_ISR_TXE == 0); // wait for TX buffer empty                 USART1->TDR = 'a';
2013-06-10T05:16:46 < upgrdman> nevermind
2013-06-10T05:17:04 < upgrdman> just realized my problem by pasting that text. forgot () around the blah&blah
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2013-06-10T05:28:16 < X-Scale> The old precedence issue that dates back to 1975 iirc
2013-06-10T05:37:19 < gxti> writing http parser in c funtimes
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2013-06-10T06:16:14 < gxti> and now i can finally load the damn page in firefox
2013-06-10T06:16:45 < gxti> glad i have 128k of flash, at least i don't have to worry about having too much code
2013-06-10T06:16:57 < gxti> up to 83k with -O0
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2013-06-10T09:12:42 < Tectu_> meh... let's say I need a peak current of 550 to 600mA on my dev board... can I still go with USB powered? A friend of mine just told me that most external harddrives (2.5") need peak currents up to 1A
2013-06-10T09:13:27 < jpa-> well, kind-of but it is not compliant to the specs
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2013-06-10T09:13:47 < jpa-> but how does your board take so much power? tft backlight?
2013-06-10T09:14:21 < Tectu_> jup
2013-06-10T09:14:22 < Tectu_> and SRAM
2013-06-10T09:14:23 < Tectu_> and PHY
2013-06-10T09:14:35 < Tectu_> it's a 5" TFT
2013-06-10T09:15:43 < Tectu_> and honestly I don't have to care when my dev board will not work on a rpi, as long as I spec it, right?
2013-06-10T09:19:16 < jpa-> well, it's a horrible power hog if it takes more than 500mA ;)
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2013-06-10T09:19:52 < Tectu_> I agree :D
2013-06-10T09:20:07 < Tectu_> emeb_mac, what's the power consumption of an active BMP v2?
2013-06-10T09:20:28 < emeb_mac> Tectu_: dunno - never measured it.
2013-06-10T09:20:39 < Tectu_> emeb_mac, can you go for it? :D
2013-06-10T09:21:03 < jpa-> my guess: 50mA :)
2013-06-10T09:21:10 < emeb_mac> hmmm - it's powered by USB, so I'd need a USB breakout of some sort
2013-06-10T09:21:20 < emeb_mac> jpa-: that's probably pretty close
2013-06-10T09:21:39 < emeb_mac> maybe a bit more with the LEDs on
2013-06-10T09:22:30 < jpa-> are they very bright leds?
2013-06-10T09:22:45 < Tectu_> I didn't put the LEDs there
2013-06-10T09:22:48 < emeb_mac> not really - probably pulling < 10ma
2013-06-10T09:23:34 < jpa-> Tectu_: i think some status led for the BMP might be useful
2013-06-10T09:25:07 < Tectu_> jpa-, how comes?
2013-06-10T09:25:14 < Tectu_> jpa-, it's on-board
2013-06-10T09:25:16 < jpa-> if it doesn't work
2013-06-10T09:25:26 < Tectu_> then I have some testpads to reflash it ;-)
2013-06-10T09:25:43 < jpa-> for example IIRC the BMP bootloader flashes a led, so you know if it is in bootloader or normal operation
2013-06-10T09:25:54 < Tectu_> hmkay
2013-06-10T09:26:15 < jpa-> and ever dev board must have atleast 5 blinking leds
2013-06-10T09:26:40 < Tectu_> :D
2013-06-10T09:26:54 < Tectu_> already having two of the PHY + 3 user ones
2013-06-10T09:28:06 < jpa-> do they all blink?
2013-06-10T09:30:12 < Tectu_> only if you plug in an ethernet cable and have a link as well
2013-06-10T09:30:31 < Tectu_> of course plug and unplug the cable very quickly to make it blink
2013-06-10T09:32:18 < jpa-> good
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2013-06-10T09:43:18 < Tectu_> that SRAM has too high current requirements
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2013-06-10T10:06:22 < Tectu> assuming that I am never going to use the ADC, should I leave it N/C or just connect it to normal VDD?
2013-06-10T10:06:24 < Tectu> maybe GND?
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2013-06-10T10:16:36 < jpa-> Tectu: normal vdd
2013-06-10T10:17:11 < jpa-> Tectu: if Vdd_a is not connected or is below minimum voltage, the processor is held in reset
2013-06-10T10:17:12 < Tectu> also, why can't I have two schematics in kicad open at the same time
2013-06-10T10:17:17 < Tectu> huh?
2013-06-10T10:17:21 < Tectu> why that?
2013-06-10T10:17:25 < jpa-> it's how it works
2013-06-10T10:17:27 < Tectu> I mean you can turn of the entire analog peripherals, no?
2013-06-10T10:17:43 < jpa-> yeah, but the power on reset circuitry seems to monitor the Vdd_a pin
2013-06-10T10:18:13 < Tectu> hmkay
2013-06-10T10:18:16 < Tectu> I don't see the reason
2013-06-10T10:18:25 < Tectu> But I assume the ST people are smarter than me
2013-06-10T10:19:36 < jpa-> it doesn't matter if they are smart or not, it's just the way it is :P
2013-06-10T10:20:31 < jpa-> i have "verified" this myself, having the Vadc regulator disconnected causes the processor not to boot
2013-06-10T10:20:35 < jpa-> atleast on STM32F4
2013-06-10T10:21:11 < jpa-> (as evidenced by this channel logs on 2013-03-13)
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2013-06-10T10:25:41 < Tectu> hmm
2013-06-10T10:25:43 < Tectu> thanks for the info
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2013-06-10T12:08:56 < Tectu> is a "self made" highside switch made out of a P-Fet sane or should I go for a dedicate high side switch?
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2013-06-10T12:37:28 < jpa-> Tectu: it's sane, if your voltages are nice
2013-06-10T12:37:51 < jpa-> i.e. switching 3.3V power with 3.3V IO is easy and nice with P-fet
2013-06-10T12:38:12 < jpa-> switching 12V power is ok-ish, but needs a N-fet also and doesn't go that fast if you do it with pull-ups
2013-06-10T12:38:32 < jpa-> switching >24V power starts to run into the Vds limits and gets difficult
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2013-06-10T14:31:42 < jpa-> hmm.. i added the compiler to the version control repo :P
2013-06-10T14:32:03 < jpa-> smartest way to do it, because it seems that every time i switch gcc version i get some crazy build error
2013-06-10T14:33:54 <+Steffanx> lol jpa-
2013-06-10T14:34:46 <+Steffanx> !quote add ".." etc. :P
2013-06-10T14:35:53 < karlp> jpa-: not unusual, more projects should do it actually.
2013-06-10T14:36:20 < karlp> cisco kept all their compilers in version control too.
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2013-06-10T14:37:07 < karlp> always feels a bit ugly though, especially if you just stuck the bins in :)
2013-06-10T14:37:12 < zyp> heh
2013-06-10T14:37:58 <+Steffanx> a bit karlp?
2013-06-10T14:38:30 < karlp> openwrt's buildroot builds a known compiler too,
2013-06-10T14:38:36 < zyp> android too
2013-06-10T14:38:56 < zyp> or rather, android pulls in a repo with precompiled compilers
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2013-06-10T14:40:13 <+Steffanx> Yeah, now i think about it. Maybe it's not THAT different compared to a complete IDE that also install a random version for you :)
2013-06-10T14:40:23 <+Steffanx> *different from
2013-06-10T14:40:45 <+Steffanx> Bad comparison
2013-06-10T14:53:18 < jpa-> karlp: i stuck the .tar.bz2 from gcc-arm-embedded in there :P
2013-06-10T14:55:30 <+Steffanx> is your build process that weird you get crazy build errors with different versions jpa-?
2013-06-10T14:55:44 < jpa-> Steffanx: not build process, my source code
2013-06-10T14:55:58 < jpa-> it's a bit hackish to run stripped-down libstdc++ atop nuttx libc
2013-06-10T14:58:39 <+Steffanx> oh, ok :)
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2013-06-10T15:28:24 < trepidaciousMBR_> Does anyone know which bytes of the STM32F4 96 bit unique device id are most likely to be different from other devices?
2013-06-10T15:29:24 < trepidaciousMBR_> Or maybe I should make a pseudo random number based on the device id
2013-06-10T15:31:53 < jpa-> there is an st app code describing the code
2013-06-10T15:32:25 < jpa-> it is ASCII code for the location of the die on the silicon, or something like that
2013-06-10T15:32:30 < jpa-> i usually just xor it all together
2013-06-10T15:32:54 < trepidaciousMBR_> I want to use it to generate a locally assigned MAC that is unlikely to collide between two STM32F4's
2013-06-10T15:33:02 < jpa-> but that is not optimal
2013-06-10T15:33:35 < trepidaciousMBR_> I'm probably worrying about ti too much, but I only need 6 of the 12 bytes, and I didn't want to pick some bytes that are always 0 ;)
2013-06-10T15:33:56 < jpa-> better would probably be like   (word0 * prime0 + word1 * prime1 + word2 * prime2) >> 32  where the primes are 64 bit values
2013-06-10T15:34:42 < jpa-> don't assign all the 6 MAC bytes at random.. pick some pseudo-vendor prefix so that you are less likely to collide with real MACs
2013-06-10T15:35:38 < trepidaciousMBR_> There's a thing for that - no real MAC has a particular bit set, so I can avoid them
2013-06-10T15:36:19 < trepidaciousMBR_> "Universally administered and locally administered addresses are distinguished by setting the second-least-significant bit of the most significant byte of the address."
2013-06-10T15:38:22 < jpa-> ah
2013-06-10T15:38:26 < jpa-> indeed
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2013-06-10T16:05:44 < karlp> trepidaciousMBR_: you can feed the 96bits into the crc generator to hash it,
2013-06-10T16:05:50 < karlp> and on f4 you can even use the hash module itself.
2013-06-10T16:05:54 < karlp> which shoudl be even better
2013-06-10T16:06:21 < karlp> I've seen two devices where the crc'd unique id gave me the same 48bit result though :|
2013-06-10T16:06:30 < trepidaciousMBR_> Ah, I just seeded a simple C RNG with the serial, hopefully that won't be too bad - it doesn't need to be too fast
2013-06-10T16:06:56 < karlp> it wasn't about speed, it was about using as many random bits as you can.
2013-06-10T16:07:10 < trepidaciousMBR_> ah yup, that's what I'm after :)
2013-06-10T16:07:11 < karlp> you can't really just take the middle 48bits of 96 andhope it's enough
2013-06-10T16:07:26 < karlp> the 96bit id is only guaranteed to be unique in the whole.
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2013-06-10T16:07:33 < karlp> so you wantto use all those bits somehow
2013-06-10T16:07:45 < trepidaciousMBR_> Yup I've got an example simple RNG from wikipedia, and sort of mangled the bytes of the device id into the seed
2013-06-10T16:09:20 < trepidaciousMBR_> It's probably not great: https://gist.github.com/trepidacious/5748580
2013-06-10T16:10:37 < karlp> trepidaciousMBR_: it's probably worth making sure you explicitl zero out the multicast bit too...
2013-06-10T16:10:45 < trepidaciousMBR_> ah yup
2013-06-10T16:13:48 < karlp> here's how I did it with the crc module: http://pastebay.net/1239157
2013-06-10T16:23:57 < gxti> seems easier to just xor one half with the other
2013-06-10T16:24:33 < jpa-> xor is a bit bad, because it seems every other byte is space or something
2013-06-10T16:24:50 < karlp> yeah, mnost of the 96bits are pretty shit, that's why you've got to use it all.
2013-06-10T16:24:56 < gxti> btw if you want a lazy and correct solution for future boards, microchip sells an eeprom with mac burned in super cheap
2013-06-10T16:25:11 < karlp> (and we sue that eeprom ourselves on things where it matters ;)
2013-06-10T16:25:40 < karlp> works real good.
2013-06-10T16:26:15 < gxti> plus it's an eeprom, which f107 doesn't have
2013-06-10T16:26:17 < jpa-> it's and ascii id like   002D0025-32314705-32383435.. 
2013-06-10T16:26:35 < karlp> exactly, saves having to dick around with eeprom emulation in flash pages crap
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2013-06-10T16:54:38 < dongs> just use one of these http://www.digikey.com/product-search/en/integrated-circuits-ics/specialized-ics/2556114?k=ATSHA204
2013-06-10T16:54:41 < dongs> shit is fucking dirt cheap
2013-06-10T16:54:52 < dongs> and you can get it in SOT23
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2013-06-10T17:02:03 < karlp> this shit's half that price: http://www.digikey.com/product-detail/en/24AA02E48T-I%2FOT/24AA02E48T-I%2FOTCT-ND/2003468
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2013-06-10T17:02:14 < karlp> (it's the one gxti was talking about using)
2013-06-10T17:02:39 < karlp> actuall,y 1/3rd the price in 10s.
2013-06-10T17:03:40 < dongs> uh
2013-06-10T17:03:43 < dongs> its also not secure
2013-06-10T17:03:50 < dongs> and half the eep size
2013-06-10T17:03:55 < dongs> and doesnt have SHA crypto accelerator
2013-06-10T17:03:56 < karlp> so what? he wanted a mac address, not a seuciryt chip
2013-06-10T17:04:00 < dongs> pfft
2013-06-10T17:04:18 < dongs> next step after a mac address is getting your shit cloned, IP stolen, and chinese pumping your shit out at 1/10th price
2013-06-10T17:04:49 < dongs> < karlp> exactly, saves having to dick around with eeprom emulation in flash pages crap
2013-06-10T17:04:54 < dongs> its like 10 lines of code
2013-06-10T17:04:58 < dongs> to erase/write/read flash block
2013-06-10T17:05:02 < dongs> actually read is like one line
2013-06-10T17:05:14 < dongs> struct nigger *nigger = 0xsome_flash_address;
2013-06-10T17:05:15 < dongs> and youre done
2013-06-10T17:05:36 < dongs> and write is just flash_unlock(); Flash_erase_block(blah) then flash_write()
2013-06-10T17:05:38 < dongs> done
2013-06-10T17:05:40 < karlp> that doesnt' deal with page rotation and wear leveling.
2013-06-10T17:05:53 < karlp> that's just using an entire page as write once storage.
2013-06-10T17:06:10 < karlp> and you have to remember you can only write things that clear bits and so on.
2013-06-10T17:06:14 < dongs> with  giant pages on F4 you dont have much of a choice.
2013-06-10T17:06:20 < dongs> wuat
2013-06-10T17:06:25 < dongs> once you erase it you can write wahtever
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2013-06-10T17:06:39 < karlp> not to the same place, you need to move forwards though it,
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2013-06-10T17:06:49 < dongs> ?
2013-06-10T17:06:57 < karlp> and pretty soon you've got the full "eeprom emulation in flash" layer that you claimed was 10 lines.
2013-06-10T17:06:59 < dongs> i'm rewriting same sturct into same exact shit
2013-06-10T17:07:06 < dongs> and some of my devboards have had thousands of those rewrites
2013-06-10T17:07:13 < karlp> if you erase before ach write, yeah.
2013-06-10T17:07:15 < dongs> into a single flash sector
2013-06-10T17:07:15 < dongs> with zero issues
2013-06-10T17:07:21 < dongs> (and end users probably won't change it more than 10-20 times max
2013-06-10T17:07:31 < dongs> < dongs> and write is just flash_unlock(); Flash_erase_block(blah) then flash_write()
2013-06-10T17:07:33 < karlp> but that erases your whole page,
2013-06-10T17:07:34 < dongs> i said that.
2013-06-10T17:07:39 < karlp> sure, if that works for you.
2013-06-10T17:07:42 < dongs> obviosuly
2013-06-10T17:07:48 < karlp> great!
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2013-06-10T17:25:35 < Laurenceb> wtf
2013-06-10T17:25:52 < Laurenceb> so ive taken the dodgey µSD card i had last week
2013-06-10T17:26:04 < Laurenceb> and written 4GB to it randomly
2013-06-10T17:26:24 < Laurenceb> and its got even slower when i benchmark with SD slot on my pc
2013-06-10T17:26:39 < Laurenceb> and now Fatfs won't mount it
2013-06-10T17:26:49 < Laurenceb> and its corrupted afterwards
2013-06-10T17:28:58 < Laurenceb> supposedly its "Lexar".. but the serial number is silkscreened
2013-06-10T17:29:51 <+Steffanx> Sounds like a waste of time + trash worthy :)
2013-06-10T17:29:58 < Laurenceb> yes
2013-06-10T17:30:02 < Laurenceb> card -? bin
2013-06-10T17:30:06 < Laurenceb> *->
2013-06-10T17:30:36 < Laurenceb> http://en.wikipedia.org/wiki/File:Coding_Shots_Annual_Plan_high_res-5.jpg
2013-06-10T17:30:48 < Laurenceb> wikipedia photo for "software developer"
2013-06-10T17:30:52 < Laurenceb> i lolled
2013-06-10T17:33:23 < Laurenceb> neckbeard
2013-06-10T17:40:13 < gxti> it's healthy to be able to make fun of yourself Laurenceb
2013-06-10T17:40:56 < gxti> dongs: i'd be happy if the chinese started making my shit for me
2013-06-10T17:41:07 < gxti> saves me the trouble of paying them to do it
2013-06-10T17:42:00 < dongs> haha
2013-06-10T17:43:28 < gxti> also we were talking about mac addresses, these atmel things don't seem to have them. they look neat though.
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2013-06-10T18:00:28 < karlp> whee, arm accredited enginerd programs.
2013-06-10T18:00:41 < karlp> I feel so solid in my carerr now that I can get more corporate letters
2013-06-10T18:12:02 < Laurenceb> http://www.b3tards.com/u/a08da6a90be511515c3a/guessyew.png
2013-06-10T18:12:25 < gxti> can we get a bot that just automatically kickbans anyone who posts a b3ta link?
2013-06-10T18:14:02 < jpa-> you mean: can we get a bot that automatically kicks Laurenceb when he posts a link?
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2013-06-10T19:18:12 < dongs> you made this guy rage the fuck out
2013-06-10T19:19:36 <+Steffanx> Agreed gxti
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2013-06-10T19:20:44 <+Steffanx> 4chan and some nicks in combination with imgur as well
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2013-06-10T19:39:24 < Tectu> wtf is happening here?
2013-06-10T19:39:30 < Tectu> zlog, logs
2013-06-10T19:39:30 < zlog> Tectu: Log stored at http://tom-itx.dyndns.org:81/~tom-itx/irc/logs/%23%23stm32/2013-06-10.html
2013-06-10T19:40:13 < Tectu> -.-
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2013-06-10T19:50:52 < gxti> ur
2013-06-10T19:54:38 <+Steffanx> fantastic
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2013-06-10T23:41:06 < upgrdman> anyone here use gcc-arm-embeeded? is it possible to do a varargs function?
2013-06-10T23:43:54 < gnomad> it should be.
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2013-06-10T23:46:04 < jpa-> upgrdman: sure
2013-06-10T23:46:19 < gxti> yes and i have done so quite recently
2013-06-10T23:46:47 < upgrdman> what do i #include? <stdarg.h>?
2013-06-10T23:46:58 < upgrdman> just like "normal" c?
2013-06-10T23:47:24 < jpa-> yes
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2013-06-10T23:47:57 < upgrdman> ok thanks
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2013-06-11T00:07:47 < Laurenceb_> trollo
2013-06-11T00:07:54 < Laurenceb_> trollah
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2013-06-11T01:51:29 < zyp> jpa-, did you have a link to your semihosting print func?
2013-06-11T01:56:50 < zyp> found it on google
2013-06-11T01:56:59 < zyp> with google*
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2013-06-11T02:47:23 < zyp> jpa-, any reason you made the args-array static?
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2013-06-11T04:35:51 < upgrdman> question about static char arrays in c: i know it's poor form to "return a string" but having a static c string in a function, and then return a pointer to that static c string. but should it cause problems? im getting some weirdness where it looks like one static c string in one function is partially overwriting a static c string in another function.
2013-06-11T04:40:30 < dongs> statics are global in scope anyway
2013-06-11T04:40:56 < dongs> so what youre saying is impossible
2013-06-11T04:40:59 < dongs> especially if its const/static
2013-06-11T04:41:02 < dongs> it'll be in rodata
2013-06-11T04:41:07 < upgrdman> hmmmm
2013-06-11T04:41:39 < dongs> is it static in ram, or in flash?
2013-06-11T04:41:44 < dongs> i mean are you modifying ht string?
2013-06-11T04:41:49 < dongs> or just returning a fixed pointer to insdie of it
2013-06-11T04:42:02 < upgrdman> ram
2013-06-11T04:42:10 < upgrdman> nm. found the problem
2013-06-11T04:42:18 < dongs> then youre probably fuckin shit up
2013-06-11T04:42:27 < upgrdman> :) as usual, yes
2013-06-11T04:42:39 < upgrdman> its a bug in some old code i wrote, that never cropped up
2013-06-11T04:42:47 < flop> static char[]={'d','o','n','g','s'};
2013-06-11T04:43:02 < upgrdman> i wrote a function to take a uint32, and return a c-string formatted as binary with a space between each four bits
2013-06-11T04:43:03 < upgrdman> but
2013-06-11T04:43:24 < upgrdman> the lcd i printed that data to was 36 chars wide. so it looked perfect
2013-06-11T04:43:43 < upgrdman> i fogot to null terminate the c string :) htf did i make sure a retarded mistake
2013-06-11T04:43:52 < dongs> gg
2013-06-11T04:44:33 < upgrdman> gg?
2013-06-11T04:44:48 < flop> good game?
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2013-06-11T08:58:52 < jpa-> zyp: hmm, not really; looks strange now that i notice that
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2013-06-11T09:36:53 < dongs> why no chat
2013-06-11T09:37:06 < emeb_mac> blame it on nsa
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2013-06-11T09:54:46 < Supaplex> and Canukistan
2013-06-11T09:56:53 < Tectu> <emeb_mac> blame it on nsa   <--- this
2013-06-11T10:01:40 < Supaplex> but mostly the national insecurity association
2013-06-11T10:09:16 < dongs> haha
2013-06-11T10:09:42 < Tectu> how does one solder a QFN with a  hot air gun? Does't it blow it away?
2013-06-11T10:13:30 < emeb_mac> don't blow so hard
2013-06-11T10:14:02 < emeb_mac> nsa = no such agency
2013-06-11T10:16:07 < PaulFertser> Tectu: but if you blow too slow, the gun itself can overheat and break. Try blowing at some old useless board first, you'll see that even small resistors are not getting blown away if you do not shake the board.
2013-06-11T10:16:57 < Tectu> PaulFertser, interesting
2013-06-11T10:17:17 < Tectu> I've just been using some 60k$ IR auto-matic with vaccum and stuff oven here at work so far
2013-06-11T10:17:46 < Tectu> http://www.blundell.co.uk/thumbnailgenerator.ashx?id=1345&width=932&height=2000&method=Limit&background=FFFFFFFF&corners=0&cornerradius=0&type=Jpeg&quality=80&h=E6EE55688D6A115A34168DBD2C604DC4&units=Pixel
2013-06-11T10:18:05 < Tectu> that's what I call a solder /station/
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2013-06-11T10:25:36 <+Steffanx> thats no fun Tectu
2013-06-11T10:25:58 < Tectu> huh?
2013-06-11T10:26:14 < Tectu> you want to ban me now because of a link to an ERSA rework station? :P
2013-06-11T10:26:26 <+Steffanx> stfu
2013-06-11T10:26:59 <+Steffanx> You are one of those who complained about it.
2013-06-11T10:27:31 <+Steffanx> It's no fun as in no hobby-bobbying no fun
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2013-06-11T10:36:05 < zyp> jpa-, I seemed to have some problems with qemu semihosting when I moved args to stack, but it looks like it's just the handling of write that is broken
2013-06-11T10:37:10 < zyp> because even with static args I only get the last line printed
2013-06-11T10:37:32 < zyp> so I suspect it's handled async or something like that
2013-06-11T10:37:40 < zyp> SYS_WRITE0 works fine however
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2013-06-11T11:14:00 < jpa-> zyp: hmm, i have used it with qemu semihosting and it has worked fine
2013-06-11T11:14:07 < jpa-> just prints, though
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2013-06-11T11:23:42 < baird_> "I'm going to startup a really fast delivery service for cocaine. Calling it Instagram."
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2013-06-11T12:21:39 < Tectu> http://www.ebay.co.uk/itm/TTi-TriboCop-T1000C-SpinStand-Hard-Drive-HDD-Testing-Tester-Optical-Test-Fixture-/130926495974?pt=US_Internal_Hard_Disk_Drives&hash=item1e7bd3c8e6
2013-06-11T12:21:55 < Tectu> how does that land on ebay?
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2013-06-11T12:57:11 < karlp> Tectu: what do you mean? excellent place to get rid of stuff like that.
2013-06-11T12:57:15 < karlp> where else should it go?
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2013-06-11T16:06:36 < trepidaciousMBR> jpa-: I'm just working on reading/writing protobuf to EEPROM, does nanopb mind if there is extra random data on the end of a stream after complete valid data?
2013-06-11T16:08:04 < trepidaciousMBR> btw I know I said this before, but nanopb is great :)
2013-06-11T16:16:10 < karlp> huh, 3500~ products in "undefined category"  good luck finding any of them on digikey
2013-06-11T16:17:38 < karlp> and 27000 in "misc"
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2013-06-11T16:21:32 < hk> you browse categories?
2013-06-11T16:31:43 < jpa-> trepidaciousMBR: terminate with zero and it will end reading
2013-06-11T16:32:22 < jpa-> (there may be other zeros in the data, but the zero after a message occurs in "field number" position and is interpreted as "end of message")
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2013-06-11T16:35:31 < karlp> hk: not normally, but often go to a category and start picking the filters
2013-06-11T16:35:38 < karlp> anything not in the right category won't ever sho wup
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2013-06-11T16:37:44 < hk> some don't have filters
2013-06-11T16:37:55 < hk> like aren't "through hole" and are also not "smd"
2013-06-11T16:38:01 < hk> so they won't show up in both.
2013-06-11T16:38:32 < hk> My main problem is that they have like 15 categories of connectors
2013-06-11T16:38:38 < hk> no matter which shop.
2013-06-11T16:38:47 < hk> and you never know which one is right.
2013-06-11T16:39:08 < trepidaciousMBR> jpa-: Ah cool, I'll look at zero padding then end as well. Does nanopb write out a terminating 0 when it encodes?
2013-06-11T16:39:31 < hk> so i search roughly for what I need and browse the pictures that looks like what I need and then browse the cathegory it was sorted into.
2013-06-11T16:44:32 < jpa-> trepidaciousMBR: no, the standard does not specify the way to terminate a message, so by default nanopb does not do it
2013-06-11T16:44:49 < jpa-> trepidaciousMBR: a simple pb_write(&stream, "\0", 1); or similar should work
2013-06-11T16:45:31 < trepidaciousMBR> Ah great, actually that works out well since I need to pad to a page boundary in eeprom, I'll zero out the padding page just to be neat :)
2013-06-11T16:46:14 < jpa-> :)
2013-06-11T16:54:54 < karlp> hey zyp: for your rfid games: http://www.digikey.com/product-detail/en/ROBOT-M24LR16E-A/ROBOT-M24LR16E-A-ND/2816355
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2013-06-11T17:50:43 < trepidaciousMBR> jpa-: Great, that fixed it, thanks :)
2013-06-11T17:55:11 < Blok> Is there anyone here who tried the stm32w-series?
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2013-06-11T18:14:52 < karlp> Blok: I don't recall anyone mentioning it yet,
2013-06-11T18:17:39 < Blok> karlp: Why is this? Folks too attached to wires? :)
2013-06-11T18:18:42 < gxti> yes, that's it. they must be AFRAID of wireless.
2013-06-11T18:18:45 < gxti> or something.
2013-06-11T18:19:26 < Laurenceb> evil waves
2013-06-11T18:19:30 < Laurenceb> work of the devil
2013-06-11T18:19:36 < gxti> UNCLEAN
2013-06-11T18:19:45 < Laurenceb> burn them
2013-06-11T18:20:56 < Laurenceb> https://en.wikipedia.org/wiki/File:Apteracar1.jpg
2013-06-11T18:20:57 < Laurenceb> wtf
2013-06-11T18:22:55 < dongs> whats pagfe size on F103?
2013-06-11T18:22:56 < dongs> 1K?
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2013-06-11T18:30:25 < karlp> Blok: not really, I'd have played with it, but digikey thinks I'm a terrorist and won't sell it to me,
2013-06-11T18:30:40 < karlp> Blok: also, there was no ref man or datasheet for the stm32w for a long time.
2013-06-11T18:30:53 < karlp> it was largely, "be one of our preferred customers or burn in hell"
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2013-06-11T18:31:11 < Laurenceb> but now...
2013-06-11T18:31:15 < Blok> karlp: The last is my biggest problem.
2013-06-11T18:31:20 < Laurenceb> they have some nice libraries
2013-06-11T18:31:24 < Laurenceb> well.. libraries
2013-06-11T18:31:30 < Laurenceb> dunno if st code is ever nice
2013-06-11T18:31:37 < karlp> now there's libraries, and a datahseet, and no ref man, so we're getting somewhere,
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2013-06-11T18:32:52 < Laurenceb> http://www.semtech.com/wireless-rf/rf-transceivers/sx1276/
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2013-06-11T18:34:42 < Laurenceb> this LoRa stuff looks interesting
2013-06-11T18:35:02 < Laurenceb> http://www.emmicroelectronic.com/products.asp?IdProduct=300
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2013-06-11T23:17:10 < zeropointo> is there a way i can see what function was interrupted when an interupt is fired?
2013-06-11T23:17:34 < zyp> sure, just examine the stack
2013-06-11T23:18:18 < zeropointo> how? lol
2013-06-11T23:18:33 < zyp> well, what are you trying to achieve?
2013-06-11T23:19:19 < zeropointo> well i'm waiting on an ST-Link and i need to debug a massive amount of code that I didn't write. I'd like to see which function the application hangs in.
2013-06-11T23:19:40 < zeropointo> So when SysTick_Handler is called i'd like to print the function that was interrupted.
2013-06-11T23:19:45 < zeropointo> through the UART
2013-06-11T23:19:57 < zyp> oh, so what you are saying is that you don't have a debugger yet
2013-06-11T23:20:04 < zeropointo> right
2013-06-11T23:20:26 < zeropointo> but i have the UART wired up to the com port with a TTL to serial converter
2013-06-11T23:20:33 < zeropointo> and i wrote some code to spit out messages
2013-06-11T23:21:26 < zyp> do you at all have any knowledge about ABI? how functions work on assembly level?
2013-06-11T23:22:13 < zeropointo> yes a little
2013-06-11T23:22:59 < zeropointo> in there a pointer i can read out of a register and reference to the .map file for example?
2013-06-11T23:23:33 < zyp> kind of
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2013-06-11T23:24:24 < zyp> you have to grab the value of the stack pointer upon interrupt handler entry, because at that point it will point to an interrupt frame
2013-06-11T23:24:55 < zyp> the interrupt frame will contain the old values of r0-3, r12, lr, pc and psr, in that order
2013-06-11T23:25:06 < zyp> what you are interested in would be the old pc value
2013-06-11T23:25:53 < zyp> i.e. $sp+24, or index 6 if you cast it to an uint32_t pointer
2013-06-11T23:28:20 < zeropointo> do i need to do this in asm or is there an stm lib function i can use?
2013-06-11T23:29:21 < zyp> http://paste.jvnv.net/view/imWxX <- something like this should work
2013-06-11T23:30:06 < zyp> oh, wait, my bad
2013-06-11T23:30:06 < zeropointo> awesome! thank you!
2013-06-11T23:30:11 < zeropointo> oh?
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2013-06-11T23:30:42 < zyp> well, not bad
2013-06-11T23:30:46 < zyp> I just forgot one part
2013-06-11T23:30:56 < zyp> http://paste.jvnv.net/view/WkDD0 <- like this
2013-06-11T23:32:44 < zeropointo> lol as we were talking some one just walked into the office and handed me the ST-Link i've been waiting over two weeks for.
2013-06-11T23:32:58 < zeropointo> but i'll try this out first. thanks for your help.
2013-06-11T23:33:14 < zyp> no problem
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2013-06-11T23:44:02 < Laurenceb_> http://www.audiotweaks.com/reviews/cblelevators/elevator03.jpg
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2013-06-11T23:48:05 < upgrdman> using rs232 to write test to a computer. i can use \r to move the cursor back to the front of the current line. is there an easy way to move the cursor UP a line, or is that shell-specific?
2013-06-11T23:48:11 < upgrdman> s/test/text
2013-06-11T23:49:22 < karlp> that's into the world of (n)curses shit.
2013-06-11T23:50:21 < upgrdman> ok. fair enough. thanks
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2013-06-11T23:59:50 < PaulFertser> upgrdman: it's specific to a terminal emulator you're using, most probably it'll accept vt100 control codes by default.
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2013-06-12T00:04:27 < upgrdman> PaulFertser: found this online: "Cursor Up		<ESC>[{COUNT}A" ... does that mean "escape char, [ char, 0x01, A char" or do you know if the {} need to be sent as well?
2013-06-12T00:04:44 < upgrdman> assuming i want to move the cursor up one line
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2013-06-12T07:27:15 < dongs> embedded-STM32F-lib v0.1 is a nascent open source core library for the STM32F series of ARM microcontrolers from ST. The repo contains all the document analysis tools to generate much of the lowest layer of the library with clear traceablity to the datasheets. The higher layers of the library use C++ patterns to ease programming.
2013-06-12T07:27:50 < dongs> 1) read ST pdfs 2) autogenerate code from that 3) ???
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2013-06-12T07:47:03 < GargantuaSauce> that's....something
2013-06-12T07:47:13 < GargantuaSauce> i like how it has a hand-written linker script
2013-06-12T07:47:29 < GargantuaSauce> for a single model
2013-06-12T07:51:22 < dongs> by  .. something you mean something gay. amirite
2013-06-12T07:52:17 < dongs> at least it seems to use some obscure C++ shit
2013-06-12T07:52:20 < dongs> maybe zyp would be excited.
2013-06-12T07:52:39 < dongs> did you actually try to buid it
2013-06-12T07:52:40 < dongs> build
2013-06-12T07:54:46 < GargantuaSauce> lol no
2013-06-12T07:55:11 < GargantuaSauce> i spend enough time wrestling with broken shit i NEED to work
2013-06-12T07:55:22 < dongs> haha
2013-06-12T07:55:43 < dongs> precisely why I dont use opensores build tools
2013-06-12T07:55:46 < dongs> i just want shit to work
2013-06-12T07:55:48 < dongs> without guessing
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2013-06-12T08:10:23 < R2COM1> lol
2013-06-12T08:10:41 < R2COM1> why do all those RC hobby shit batteris/connectors are non latchable
2013-06-12T08:10:58 < R2COM1> isnt something what flies, and possible vibrates should have very firm connections
2013-06-12T08:11:16 < GargantuaSauce> so you can easily yank it apart when some component inevitably catches fire
2013-06-12T08:11:18 < R2COM1> looks like all of them are using those, 3 pin, 2 wire connectors for power
2013-06-12T08:11:27 < R2COM1> really?
2013-06-12T08:11:47 < R2COM1> thats truly dumbass then
2013-06-12T08:11:51 < GargantuaSauce> no not really
2013-06-12T08:12:04 < R2COM1> and guess what even servos
2013-06-12T08:12:15 < R2COM1> just regular non shrouded non latchable pin connectors
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2013-06-12T08:12:22 < R2COM1> isnt that shit have to be robust?
2013-06-12T08:12:25 < dongs> no
2013-06-12T08:12:32 < R2COM1> how come no, it flies in the air
2013-06-12T08:12:41 < dongs> if it vibrates, you made the frame wrong
2013-06-12T08:12:50 < dongs> so its your fault
2013-06-12T08:12:50 < GargantuaSauce> and if you want robust, you aren't going to be using hobby stuff
2013-06-12T08:12:53 < dongs> and not the battery connector
2013-06-12T08:12:56 < R2COM1> no
2013-06-12T08:13:02 < dongs> YES
2013-06-12T08:13:02 < R2COM1> what if pilot makes some moves
2013-06-12T08:13:04 < R2COM1> or something
2013-06-12T08:13:07 < dongs> i make moves
2013-06-12T08:13:07 < R2COM1> and somehow it came off
2013-06-12T08:13:10 < dongs> and i never had that shit come off
2013-06-12T08:13:28 < R2COM1> what if during take off he hit it on a ground, didnt notice or something and connector came off a bit
2013-06-12T08:13:34 < R2COM1> and then later came off completely
2013-06-12T08:13:37 < dongs> then you fall out of the air later
2013-06-12T08:13:38 < dongs> wahts the problem?
2013-06-12T08:13:41 < R2COM1> there are like 1000 what-ifs
2013-06-12T08:13:48 < dongs> dumb pilot -> consequence
2013-06-12T08:14:12 < R2COM1> no..
2013-06-12T08:14:20 < R2COM1> equipment has to be done in a robust way
2013-06-12T08:14:30 < dongs> not when its $24.99 rtf
2013-06-12T08:14:38 < R2COM1> non-latchable connector in something what flies is *NOT* healthy
2013-06-12T08:14:48 < dongs> http://www.myrcmart.com/hj-toys-v997-mini-pet-4ch-24ghz-6axis-rtf-quadcopter-bee-p-4854.html
2013-06-12T08:14:52 < dongs> why robust this
2013-06-12T08:14:54 < dongs> when you can just buy a new one if it breaks
2013-06-12T08:15:02 < dongs> thats $25 including tarnsmitter, etc.
2013-06-12T08:15:11 < dongs> and yes it has nonlatching battery connector. so fuckign WHAT
2013-06-12T08:15:18 < dongs> dig this
2013-06-12T08:15:22 < dongs> the battery connector isnt even polarized properly
2013-06-12T08:15:27 < dongs> so its super easy to plug it in backwards.
2013-06-12T08:16:01 < R2COM1> I guess its all because of a toy stuff
2013-06-12T08:16:03 < R2COM1> :)
2013-06-12T08:16:08 < dongs> and youre talking about?
2013-06-12T08:16:21 < R2COM1> bigger toy stuff
2013-06-12T08:16:36 < R2COM1> but still from RC area..
2013-06-12T08:16:50 < R2COM1> or whatever that thing is called...RC amateur etc
2013-06-12T08:17:01 < dongs> battery connectors take reasonable force to disconnect.
2013-06-12T08:17:17 < dongs> servo connectors kinda hold themselves due to the 3 crimped pins.
2013-06-12T08:17:29 < dongs> it would take considerable effort to vibrate either of those things out.
2013-06-12T08:17:46 < dongs> your shit would fall apart from vibrations before the connectors disconnect themselves.
2013-06-12T08:20:10 < R2COM1> what I want to say is, those latching connectors are not much expencive
2013-06-12T08:20:13 < R2COM1> maybe few cents more...
2013-06-12T08:20:28 < R2COM1> so it costs almost nothing more to have shrouded connector
2013-06-12T08:20:42 < R2COM1> or the ones where one need to press first before taking it out
2013-06-12T08:20:49 < dongs> they are actually
2013-06-12T08:20:57 < dongs> your typical rc servo/battery connector is pennies
2013-06-12T08:21:03 < dongs> anything custom/nonstandard/latching is dollars+
2013-06-12T08:21:45 < dongs> and RC faggots are *cheap*.
2013-06-12T08:21:53 < dongs> they will buy someone elses shit if its $1 cheaper than yours.
2013-06-12T08:21:54 < R2COM1> thats what I figured
2013-06-12T08:24:11 < GargantuaSauce> also if you crash or whatever and one of those connectors gets yanked out, you plug it back in
2013-06-12T08:24:27 < GargantuaSauce> with a latching one you get to crimp new terminals and reassemble the connector
2013-06-12T08:27:26 < dongs> excellent point
2013-06-12T08:31:00 < R2COM1> and those standard lipo batteries... if I'm correct they are max at 60C temp...
2013-06-12T08:31:02 < R2COM1> or something like that
2013-06-12T08:31:04 < R2COM1> not more
2013-06-12T08:31:06 < R2COM1> hm
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2013-06-12T09:54:38 < R2COM1> datasheet drawings without dimensions is a cool thing
2013-06-12T09:54:39 < R2COM1> http://cfm.citizen.co.jp/english/product/pdf/CM200C_250C.pdf
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2013-06-12T10:03:36 < GargantuaSauce> [mm]
2013-06-12T10:04:05 < dongs> why the fuck a datasheet from jp be anything other than mm
2013-06-12T10:04:25 < dongs> also what GargantuaSauce said
2013-06-12T10:04:35 < dongs> why are you using those anyway
2013-06-12T10:04:38 < dongs> they sound fuckign expensive
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2013-06-12T10:09:02 < englishman> nope, 84c vs 76c
2013-06-12T10:10:05 < englishman> but more expensive than Seiko, Citizen, Epson, and TXC
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2013-06-12T10:35:41 < dongs> any of you trolls used TIM inputs for rotary encoder
2013-06-12T10:35:46 < dongs> or is it just easier to do it wiht EXTI
2013-06-12T10:36:27 < dongs> not even sure what output would be from a TIM when rotary encoding
2013-06-12T10:36:32 < GargantuaSauce> nope still procrastinating on messing with those
2013-06-12T10:36:52 < dongs> hm apparently it modifies TIMx->CNT
2013-06-12T10:36:56 < dongs> depending on waht happens
2013-06-12T10:36:59 < dongs> up or down etc.
2013-06-12T10:37:23 < GargantuaSauce> sounds pretty painless
2013-06-12T10:37:33 < dongs> http://stackoverflow.com/questions/15203069/stm32-rotary-encoder-config-on-tim4
2013-06-12T10:37:40 < dongs> yeah but so is exti
2013-06-12T10:37:44 < dongs> and you can steal any available tarduino code
2013-06-12T10:38:36 < PaulFertser> dongs: but would you want to steal tarduino code? ;)
2013-06-12T10:38:41 < dongs> noi
2013-06-12T10:38:47 < dongs> thats why im asking
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2013-06-12T10:39:58 < dongs> looks like just use TIMx_CH1/2 together anda it should work
2013-06-12T10:42:15 < GargantuaSauce> strikes me as more sensible than a manual implementation with gpio interrupts
2013-06-12T10:42:20 < dongs> yeah
2013-06-12T10:42:24 < dongs> i did a version with exti a while ago
2013-06-12T10:42:30 < dongs> it worked but probably not as s imple as this.
2013-06-12T10:42:51 < GargantuaSauce> one more bit of application state to deal with and you'd have to handle bullshit like the controller starting up with the encoder stuck between two 'clicks'
2013-06-12T10:42:52 < dongs> man that clive guy on ST forums is pretty hardcore
2013-06-12T10:42:55 < dongs> he should chat in here
2013-06-12T10:43:15 < dongs> we'd never have any unanswered questions
2013-06-12T10:43:39 < R2COM1> I guess its better to use input capture for encoder
2013-06-12T10:43:49 < R2COM1> rather than exti
2013-06-12T10:43:53 < dongs> R2COM1: theres a dedicated encoder interface.
2013-06-12T10:44:02 < dongs> yes, obviosuly, its better than using exti
2013-06-12T10:44:07 < dongs> but exti  = simple hack in case you fukced up
2013-06-12T10:44:10 < dongs> and didnt route to CH1/2
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2013-06-12T10:50:43 < R2COM1> looks like theres not big choice of suitable 32KHz oscillators for stm32 OSC IN
2013-06-12T10:51:16 < dongs> um
2013-06-12T10:51:23 < R2COM1> its transconductance is kinda really low.. and ESR of most crystals for such freq is kinda high
2013-06-12T10:51:27 < dongs> you mean like all of them basaically
2013-06-12T10:51:48 < R2COM1> I mean its internal parameters, to fully satisfy the oscillation condition
2013-06-12T10:52:16 < dongs> yes but here's how a typical IRC proEE does 32kHz xtal selection
2013-06-12T10:52:20 < dongs> 1) type in 32kHz into digikey
2013-06-12T10:52:27 < R2COM1> ok I know already
2013-06-12T10:52:29 < dongs> 2) sort by price
2013-06-12T10:52:33 < dongs> 3) profit!
2013-06-12T10:52:43 < R2COM1> lol
2013-06-12T10:52:51 < R2COM1> "proEE"
2013-06-12T10:52:58 < dongs> + irc
2013-06-12T10:53:04 < R2COM1> ah
2013-06-12T10:53:28 < R2COM1> +china would also satisfy
2013-06-12T10:58:35 < jpa-> that's definitely how i did it :)
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2013-06-12T11:23:06 < R2COM1> hmm I guess I'll have to buy some alreade filtered out capacitors/crystals and make tiny test boards for them
2013-06-12T11:23:19 < R2COM1> and see if I'll choose them
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2013-06-12T13:38:02 < dongs> wtf is NaN on arm ?
2013-06-12T13:38:04 < dongs> for floats
2013-06-12T13:38:39 < dongs> i.e. how do i do float foo = NaN;
2013-06-12T13:42:38 <+Steffanx> Don't know if it's there and if it works, but it should be a define/whatever in math.h ?
2013-06-12T13:42:50 <+Steffanx> *macro
2013-06-12T13:43:25 <+Steffanx> "GNU extension" so that probably doenst help you :P
2013-06-12T13:45:46 < dongs> whats gcc define
2013-06-12T13:45:48 < dongs> __GNUC__?
2013-06-12T13:47:33 < dongs> christ. if i use armcc with --gnu
2013-06-12T13:47:34 <+Steffanx> it should be
2013-06-12T13:47:36 < dongs> it actualyl defines that
2013-06-12T13:47:40 <+Steffanx> Haha
2013-06-12T13:47:47 <+Steffanx> gcc enumating?
2013-06-12T13:47:50 < dongs> yeah
2013-06-12T13:47:57 < dongs> but hte problem is, it doesnt support whatever this trash it
2013-06-12T13:47:58 < dongs> is
2013-06-12T13:47:59 <+Steffanx> I hope it's not as crappy as clang-gcc
2013-06-12T13:48:04 < dongs> #pragma GCC diagnostic ignored "-Wstrict-aliasing"
2013-06-12T13:48:06 < dongs> this garbage
2013-06-12T13:48:12 < dongs> sounds like just warning wank
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2013-06-12T13:50:13 < dongs> lol n ice
2013-06-12T13:50:21 < dongs> uint8_t foo(blah) { blabla; return -1; }
2013-06-12T13:51:07 <+Steffanx> :)
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2013-06-12T13:54:47 < dongs> #   define NAN (__ESCAPE__(0f_7FC00000))
2013-06-12T13:54:48 < dongs> armcc
2013-06-12T13:57:01 < Laurenceb> http://www.theregister.co.uk/2013/06/12/nsa_accused_of_crimes_against_slideware/
2013-06-12T13:57:05 < Laurenceb> poes law
2013-06-12T13:57:56 < GargantuaSauce> http://regmedia.co.uk/2013/06/12/new_prism_logo.jpg
2013-06-12T13:58:00 < GargantuaSauce> this is some dubious geometry
2013-06-12T13:58:12 < Laurenceb> haha
2013-06-12T13:58:19 < Laurenceb> epic fail
2013-06-12T13:59:32 < zyp> it's not because the edges you see through the prism is being refracted? :p
2013-06-12T14:00:42 < dongs> rewhat
2013-06-12T14:00:59 < Laurenceb> lurn 2 physics
2013-06-12T14:01:44 < GargantuaSauce> i have an isoceles prism here and it does nooot look like there's an extra diagonal edge from that angle
2013-06-12T14:03:35 < trepidaciousMBR> Maybe they just wanted to have a set of lines that would be unique and so could be trademarked :)
2013-06-12T14:03:58 < dongs> typical american activity
2013-06-12T14:03:58 < baird> ...and mostly likely because every 'real' prism-based design out there has already been trademarked..
2013-06-12T14:04:02 < GargantuaSauce> i will not accept a sensible answer of that calibre
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2013-06-12T14:04:40 < baird> And maybe I need to glance at the screen before hitting return..
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2013-06-12T14:13:27 < dongs>     Total ROM Size (Code + RO Data + RW Data)     106864 ( 104.36kB)
2013-06-12T14:14:36 < GargantuaSauce> and how does that compare to your $5000 piece of shit
2013-06-12T14:15:51 < dongs> lets build gcc version
2013-06-12T14:17:34 < dongs> i dont actually know
2013-06-12T14:17:36 < dongs> it doenst build
2013-06-12T14:17:43 < GargantuaSauce> hehe
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2013-06-12T14:19:37 < dongs> ok got a elf
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2013-06-12T14:21:17 < dongs> what do i use to print it
2013-06-12T14:21:20 < dongs> objinfo or soemthign
2013-06-12T14:21:24 < zyp> arm-none-eabi-size
2013-06-12T14:21:46 < dongs>    text    data     bss     dec     hex filename
2013-06-12T14:21:47 < dongs>  163672    2028  141832  307532   4b14c
2013-06-12T14:21:51 < dongs> fucking demolished.
2013-06-12T14:22:07 < zyp> tried -Os?
2013-06-12T14:22:11 < dongs> irrelevant
2013-06-12T14:22:12 < dongs> bbl
2013-06-12T14:22:15 < zyp> :p
2013-06-12T14:25:27 < jpa-> :D
2013-06-12T14:29:08 < zyp> jpa-, you said you had qemu semihosting working before?
2013-06-12T14:33:14 < zyp> jpa-, I'm testing some real simple stuff, just printing two lines after each other, and I only get the last of them printed
2013-06-12T14:35:19 < karlp> you're using qemu as a what, fake cortex-m device?
2013-06-12T14:35:45 < zyp> yes
2013-06-12T14:37:42 < zyp> I'm thinking about adding it as a supported target for laks, so I can test code without flashing it to hardware
2013-06-12T14:37:56 < jpa-> zyp: you may be able to checkout https://github.com/PetteriAimonen/nanopb-benchmark and run    make results_nanopb_arm   to see if it works
2013-06-12T14:38:27 < zyp> I'll try
2013-06-12T14:38:33 < jpa-> here is what it runs: https://github.com/PetteriAimonen/nanopb-benchmark/blob/master/platform/Makefile.arm#L7
2013-06-12T14:39:22 < jpa-> my results may of course be distorted because of the evil gdb hack to get instruction traces :P
2013-06-12T14:39:45 < jpa-> it pauses the cpu after every instruction, so maybe that is why it works
2013-06-12T14:40:09 < zyp> ah, possibly
2013-06-12T14:40:37 < zyp> do you mind just testing something simple, printing two lines after each other?
2013-06-12T14:40:58 < zyp> because that's what I'm having problems with
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2013-06-12T14:46:26 < jpa-> zyp: i can do that in a few hours when i'm back home
2013-06-12T14:49:42 < Laurenceb> dongs: isnt that supposed to fit into 128KB  ?
2013-06-12T14:54:03 < dongs> no
2013-06-12T14:54:05 < dongs> 1M
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2013-06-12T15:02:27 < Laurenceb> lol fairdoos
2013-06-12T15:09:09 < dongs> http://i.imgur.com/wjAlZJL.jpg cool
2013-06-12T15:11:35 <+Steffanx> What exactly am i looking at dongs?
2013-06-12T15:11:57 <+Steffanx> ( yeah few buttons, leds etc. but... )
2013-06-12T15:12:20 < Thorn> looks like someone couldn't find illuminated buttons too
2013-06-12T15:13:47 < dongs> um
2013-06-12T15:13:54 < dongs> datasheet says cant use COMP1/COMP2 for window mode..
2013-06-12T15:13:58 < dongs> but f3disco samples do it
2013-06-12T15:14:03 < dongs> who is right?
2013-06-12T15:15:18 < dongs>  In STM32F30x devices, Window mode is available for COMP3/COMP4 and
2013-06-12T15:15:18 < dongs> COMP5/COMP6.
2013-06-12T15:15:34 < Laurenceb> wtf is window mode?
2013-06-12T15:15:35 < Thorn> where's CAN termination
2013-06-12T15:15:47 < dongs> Laurenceb: window comparator.. between min/max
2013-06-12T15:16:08 < Laurenceb> does that gang two comparators?
2013-06-12T15:16:12 < dongs> yes
2013-06-12T15:16:22 < Laurenceb> i see
2013-06-12T15:16:37 < dongs> but apparently cant be done on comp1/2 according to datasheet.
2013-06-12T15:16:44 < dongs> but samples do it.
2013-06-12T15:16:45 < dongs> so..
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2013-06-12T15:33:30 < karlp> jpa-: does qemu always provide a gdbserver on :1234? (your gdv-arm-step code connects to that, but I don't see where it's setup)
2013-06-12T15:35:59 < zyp> -s is a shorthand for that
2013-06-12T15:36:27 < zyp> -s              shorthand for -gdb tcp::1234
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2013-06-12T16:01:12 < jpa-> i bet it is named '-s' as a shorthand for 'shorthand'
2013-06-12T16:02:29 < zyp> :)
2013-06-12T16:03:13 < zyp> hmm, adding custom emulated hardware to qemu doesn't look too hard
2013-06-12T16:03:34 < dongs> heh
2013-06-12T16:04:45 < Laurenceb> teledildonics
2013-06-12T16:04:52 < baird> https://github.com/AVEx-6502/qemu-6502 :P
2013-06-12T16:05:05 < dongs> sounds about as useful as 6502
2013-06-12T16:05:36 < baird> 3 billion tamagochis can't be wrong
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2013-06-12T17:11:35 < Laurenceb> http://www.b3tards.com/u/037e58b9e054b3c8dd7b/turkishalight.jpg
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2013-06-12T17:55:06 < dongs> i dont get it
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2013-06-12T18:12:32 <+Steffanx> Doesnt matter
2013-06-12T18:15:59 < dongs> man full chip erase on F4 is slow as balls
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2013-06-12T18:19:39 < jpa-> zyp: http://kapsi.fi/~jpa/stuff/other/qemu-test.tar.gz  http://paste.dy.fi/gtB/plain
2013-06-12T18:21:27 < jpa-> zyp: if you add systick emulation to qemu, i want that patch :)
2013-06-12T18:22:19 < zyp> qemu doesn't have systick?
2013-06-12T18:22:41 < jpa-> not for cortex-m3
2013-06-12T18:23:19 < karlp> what periphs does it have?
2013-06-12T18:23:23 < jpa-> it has for arm7.. i once hacked the arm7 nvic&systick to work with cortex-m3, but the qemu folks said my patch was stupid and it worked merely by chance
2013-06-12T18:23:26 < jpa-> karlp: none
2013-06-12T18:23:50 < karlp> so what can you do on it exactly?
2013-06-12T18:23:51 < dongs> haha
2013-06-12T18:24:07 < karlp> can you use it to count cycle counts of what the code would do or something?
2013-06-12T18:24:09 < jpa-> karlp: emulate pure code which does not need peripherals
2013-06-12T18:24:28 < jpa-> it is only instruction count accurate
2013-06-12T18:24:29 < karlp> if it doesn't need periphs, can't you just compile it for your host pc anyway to run it?
2013-06-12T18:24:35 < karlp> what do you need to emulate it for?
2013-06-12T18:24:42 < karlp> testing compilers?
2013-06-12T18:25:03 < jpa-> i use it to count instructions
2013-06-12T18:25:07 < zyp> karlp, I'd like to be able to test my multithreading code without hardware
2013-06-12T18:25:09 < jpa-> i.e. benchmark libraries
2013-06-12T18:25:37 < zyp> it also has a bunch of peripherals, and adding more looks fairly easy
2013-06-12T18:25:40 < karlp> zyp: how will you test multithreading without the nvic?
2013-06-12T18:25:48 < zyp> it has nvic
2013-06-12T18:25:56 < jpa-> it has? for cortex-m3?
2013-06-12T18:25:59 < karlp> so, jpa said none, and he hacked nvic and systick in, you say it does...
2013-06-12T18:26:07 < zyp> jpa-, your code works fine here as is, doesn't print anything with -O2
2013-06-12T18:26:08 < jpa-> do you know how to enable it? :P
2013-06-12T18:26:35 < jpa-> zyp: i see the same, -O2 breaks it
2013-06-12T18:26:51 < zyp> karlp, http://paste.jvnv.net/view/GCZAe
2013-06-12T18:27:30 < karlp> gptm is general purpose timer module or soemthing?
2013-06-12T18:27:40 < jpa-> zyp: needs to be  "volatile uint32_t args[3]"
2013-06-12T18:27:41 < karlp> man, so many things that seem worth giving some time to.
2013-06-12T18:28:18 < karlp> zyp: what version of qemu are you using?
2013-06-12T18:28:59 < zyp> 1.5.0
2013-06-12T18:29:24 < karlp> right, 1.0.1 here, that doesn't sound liek it will do much :)
2013-06-12T18:29:28 < zyp> oh, and it has to be set to one of the stellaris boards to get that
2013-06-12T18:30:07 < zyp> default machine, whatever that is, only have this stuff: http://paste.jvnv.net/view/Fp8ny
2013-06-12T18:30:38 < jpa-> ah yeah, saw that stellaris stuff, never could get any kernel to boot with that setting
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2013-06-12T18:30:51 < jpa-> (s/kernel/image/)
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2013-06-12T18:37:23 < zyp> jpa-, ah, found the root of the problem
2013-06-12T18:37:36 < zyp> the asm statement was missing "memory" in the clobber list
2013-06-12T18:37:45 < zyp> with that, no volatile is required
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2013-06-12T18:38:46 < jpa-> aha
2013-06-12T18:39:06 < jpa-> care to paste the syntax to clobber that?
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2013-06-12T18:39:34 < zyp> http://paste.jvnv.net/view/JWzOY
2013-06-12T18:41:36 < jpa-> thanks
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2013-06-12T18:51:31 < Laurenceb> http://www.4-traders.com/SARANTEL-GROUP-PLC-4005092/news/Sarantel-Group-PLC-Corporate-Update-16920226/
2013-06-12T18:52:03 < karlp> is asm syntax really that crazy? where do you add "memory" to jpa's tar to make it work?
2013-06-12T18:52:18 < karlp> the two versions don't even look similar to me,
2013-06-12T18:52:27 < jpa-> he just made it fancier
2013-06-12T18:52:58 < jpa-> i don't always clobber the correct things, but when i do, it looks like this  https://github.com/PetteriAimonen/nanopb-benchmark/commit/602f6fbc5782448020e7f5a5a90a982f687766e6
2013-06-12T18:53:22 < karlp> right, I tried another : there instead of the ,
2013-06-12T18:53:33 < karlp> but there's colons and , all over the place in all sorts of ways
2013-06-12T18:53:42 < jpa-> it's command : outputs : inputs : clobbers
2013-06-12T18:54:11 < zyp> I just made a generic wrapper and avoided the use of temporary registers
2013-06-12T18:54:13 < qyx_> gxti: don't you get random locks with lwip on f107? i haven't debugged it yet but it seems that lwip hangs its thread sometimes in tcp send/recv
2013-06-12T18:54:42 < zyp> my code makes the compiler just get the variables into the right registers in the first place
2013-06-12T18:55:10 < karlp> way too much special syntax for my little brain :) I'll just catch up eventually and use what you guys have already done :)
2013-06-12T18:56:03 < zyp> http://paste.jvnv.net/view/WbuGc <- now with emitted assembly
2013-06-12T18:56:43 < jpa-> make it static and it'll just inline away completely :)
2013-06-12T18:57:01 < zyp> semihosting_call already expects num and args in r0 and r1 due to EABI and doesn't have to move them around at all, and either way gets inlined into semihosting_write
2013-06-12T18:57:05 < jpa-> or actually, it inlines already and the generated one is not used
2013-06-12T18:57:27 < zyp> my point was about not using temporary variables
2013-06-12T18:57:33 < jpa-> yeah, i see :)
2013-06-12T18:58:44 < jpa-> now it is 1 instruction tidier :P
2013-06-12T18:59:03 < zyp> bl semihosting_call is equivalent with bkpt 0xab (short of clobbering lr and the extra cycles for call and return)
2013-06-12T19:00:11 < zyp> I guess this is a perfect example of when inlining makes the resulting code smaller :p
2013-06-12T19:02:37 < zyp> well, not as good as a function that would reduce to nothing but a return after constant folding and dead code elimination
2013-06-12T19:03:00 < jpa-> doesn't sound like a good function to me :)
2013-06-12T19:04:07 < zyp> of course it's good, it'll be amazingly fast :p
2013-06-12T19:16:43 < zyp> apparently TI licenced GPIO blocks and some other stuff from ARM instead of making their own
2013-06-12T19:17:08 < zyp> so a bunch of the drivers used in the stellaris stuff are for ARM standard cores
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2013-06-12T19:18:48 < zyp> GPIO, UART and SPI
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2013-06-12T19:21:59 < karlp> because it wasn't TI, it was stellaris, who had no history and no time,
2013-06-12T19:22:09 < karlp> but st wanted to reuse the periphs from str7 or something?
2013-06-12T19:22:38 < zyp> you mean luminary?
2013-06-12T19:22:55 < zyp> but yeah
2013-06-12T19:23:00 < Thorn> both st and nxp wanted to stay compatible. nxp is even pin compatible with arm7tdmi parts iirc
2013-06-12T19:23:01 < karlp> yeah, sorry,
2013-06-12T19:23:23 < karlp> the joys of compatibility
2013-06-12T19:23:36 < zyp> SPI in stm32 looks very similar to the one in stm8
2013-06-12T19:24:01 < zyp> probably other peripherals too
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2013-06-12T19:37:49 < ossifrage> well that is annoying the 'stm32f0' itc timing tool is a fscking broken excel spreadsheet
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2013-06-12T19:47:43 < jpa-> itc?
2013-06-12T19:47:50 < ossifrage> err, i2c
2013-06-12T19:47:57 < jpa-> it needs a tool?
2013-06-12T19:48:27 < ossifrage> to help compute the i2c timing registers
2013-06-12T19:49:16 < ossifrage> rather then properly explain things they made a tool, a tool that doesn't work for shit
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2013-06-12T20:15:46 < someone_r> hi
2013-06-12T20:16:17 < someone_r> i want to ask on thing
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2013-06-12T20:16:36 < someone_r> i am new in STM32 programming
2013-06-12T20:17:40 < someone_r> and i am trying to build a system which communicate with 3 sensor by I2c and transmit and receive signals trhought wireless
2013-06-12T20:18:25 < someone_r> do you think that such system is very complex?
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2013-06-12T20:18:59 < jpa-> depends on how you do it
2013-06-12T20:19:11 < jpa-> especially on the kind of wireless connection you want to use
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2013-06-12T20:20:24 < someone_r> well
2013-06-12T20:21:04 < someone_r> i was thinking to interface with the nrf24l01
2013-06-12T20:21:19 < someone_r> by usidn SPI
2013-06-12T20:22:54 < someone_r> you see.. i was expecting something like arduino... but the STM32 is waaaaaaaaaaay more complex (and more powerfull)
2013-06-12T20:23:48 < jpa-> maple is like arduino :P
2013-06-12T20:23:56 < jpa-> but if you want arduino, use arduino
2013-06-12T20:24:05 <+Steffanx> jpa- ruined EVERYTHING.
2013-06-12T20:24:19 < jpa-> that's my style
2013-06-12T20:24:19 < Thorn> arduino is a platform, stm32 is a family of ICs. you'll probably find bare AVR complex too
2013-06-12T20:24:20 <+Steffanx> it totally depends on if someone_r wants to learn something or have something finished tomorrow
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2013-06-12T20:26:44 < someone_r> not tomorrow
2013-06-12T20:26:50 < someone_r> i have one months...
2013-06-12T20:26:57 < someone_r> :S
2013-06-12T20:27:03 < someone_r> and i am starting from 0
2013-06-12T20:27:21 < someone_r> furthermore i want to learn how to program the stm32
2013-06-12T20:28:40 < someone_r> but is pretty hard when your background, knoledge and time are limited... furthermore starting directly with a challenging project doesn't help
2013-06-12T20:29:22 < Thorn> are you planning to design hardware for the project or just use development boards?
2013-06-12T20:31:00 < someone_r> for now i start to use developemnt boards...
2013-06-12T20:31:29 < someone_r> next step will be to make the actual system on board...(less problematic since i am electronic)
2013-06-12T20:31:48 < someone_r> i already have few boards
2013-06-12T20:32:02 < someone_r> discovery board
2013-06-12T20:32:15 < someone_r> with the f100
2013-06-12T20:32:35 < someone_r> but the final application will have the F103R8
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2013-06-12T20:32:41 < Tectu> not funny and unrelated NSA joke: http://img.pr0gramm.com/2013/06/imjustkiddingobamathisisonlyalittlejokedontputmeonanywatchlistswhosthatknockingonmydoorwaitnonononohelloamericanothingtoseeherekeepconsumingkeepenjoyingthekardashians.png
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2013-06-12T20:34:14 < Thorn> you may have to port your code between f100 anf f103
2013-06-12T20:35:16 < someone_r> so i will tell you the true... I am in deep S*it
2013-06-12T20:35:25 < someone_r> i have to show that something works...
2013-06-12T20:35:38 < someone_r> :D
2013-06-12T20:36:05 < someone_r> anyway thank you.. i will take this in consideration...
2013-06-12T20:36:13 < zyp> f100 and f103 is not very different
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2013-06-12T20:36:21 < someone_r> however will only be like pin mapping and so on
2013-06-12T20:36:37 < zyp> probably not even that
2013-06-12T20:36:43 < someone_r> ok
2013-06-12T20:36:56 < someone_r> so do you think it can be done?
2013-06-12T20:37:10 < someone_r> in relative short time?
2013-06-12T20:37:18 < someone_r> or is very complex to do?
2013-06-12T20:37:31 < zyp> sure, you might even find that code for f100 will run unchanged on f103
2013-06-12T20:37:41 < jpa-> for some people, even writing a hello world is very complex
2013-06-12T20:37:49 < jpa-> i bet it wouldn't be complex for zyp :P
2013-06-12T20:38:18 < Thorn> hello world on a stm32 with no experience *is* complex
2013-06-12T20:38:20 < zyp> hello world is pretty complex, you need to set up some sort of print channel :p
2013-06-12T20:38:21 < someone_r> well i am more or less at that level...
2013-06-12T20:38:39 < zyp> blinking a led however is not very hard
2013-06-12T20:38:54 < someone_r> but i can work very hard to learn
2013-06-12T20:39:32 < zyp> I don't have a full overview of all the lowend f1 chips, but I know that one difference between them is just max speed
2013-06-12T20:39:33 < someone_r> and i learn fast once that i understood the principles...
2013-06-12T20:39:43 < someone_r> and memory...
2013-06-12T20:39:48 < jpa-> pick chibios or something that makes it easier
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2013-06-12T20:39:56 < zyp> and code compiled for a slower speed one should work fine on one that's rated for a higher speed
2013-06-12T20:40:09 < someone_r> i am using
2013-06-12T20:40:11 < someone_r> coocox
2013-06-12T20:40:47 < jpa-> lol, someone actually uses that dongs stuff :P
2013-06-12T20:41:08 < someone_r> yes i am someone!
2013-06-12T20:41:10 < someone_r> :D
2013-06-12T20:41:28 < jpa-> nothing wrong with it afaik, just not very popular around here for some reason
2013-06-12T20:41:35 < GargantuaSauce> the nrf24l01 is pretty simple to use, it's pretty complicated to put together an implementation from the datasheet though so i suggest you steal and port someone's code
2013-06-12T20:42:32 < someone_r> that is my idea
2013-06-12T20:42:49 < someone_r> i found an interesting project from craziflies
2013-06-12T20:43:09 < someone_r> do you know about it?
2013-06-12T20:43:17 < someone_r> https://bitbucket.org/bitcraze/crazyflie-firmware
2013-06-12T20:43:34 < someone_r> here there is the full code...i was thinking to adapt that...
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2013-06-12T20:45:43 < GargantuaSauce> oh boy yet another flight controller
2013-06-12T20:46:37 < someone_r> yes :)
2013-06-12T20:46:50 < someone_r> because i think they are the most complete ones...
2013-06-12T20:47:18 < someone_r> they have trasmission, sensors, motors etc...
2013-06-12T20:47:39 < someone_r> so ideally you could cut off the pieces that you do not need....
2013-06-12T20:47:47 < someone_r> cut is better than build...
2013-06-12T20:47:50 < someone_r> :)
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2013-06-12T20:52:13 < jpa-> because by cutting you learn so much more.. hm, no; because by cutting you get a slimmer result.. hm no; because cutting gets you there faster.. hm, no, that would be arduino
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2013-06-12T20:53:46 < someone_r> ok
2013-06-12T20:55:05 < someone_r> but i tried to do the other way around.... so i create a new project and i have the empty MAIN file in front... with a blinking cursor
2013-06-12T20:55:26 < someone_r> and i do not know where to start....seriusly
2013-06-12T20:55:56 < GargantuaSauce> flashy LEDs are always where to start
2013-06-12T20:57:32 < someone_r> no time...i can t play around...
2013-06-12T20:57:56 < jpa-> why are you trying to learn in a hurry?
2013-06-12T20:57:58 < someone_r> more time-->more stuctured approach...
2013-06-12T20:58:19 < someone_r> becasue in 30 days i have to deliver something...
2013-06-12T20:58:26 < someone_r> something that works...
2013-06-12T20:58:31 < jpa-> do you know some other platform already?
2013-06-12T20:58:45 < jpa-> or is this your first microcontroller?
2013-06-12T20:59:29 < someone_r> blinking leds and hello world count like experience?
2013-06-12T20:59:40 < someone_r> otherwise no...
2013-06-12T20:59:53 < jpa-> oh well.. steep hill ahead :)
2013-06-12T20:59:57 < jpa-> i wish you luck :P
2013-06-12T21:00:31 < jpa-> stm32 is not the easiest platform to start with; it sure is great, but 30 days is a bit short timeframe
2013-06-12T21:01:32 < someone_r> i told them that... but no way..
2013-06-12T21:02:46 < someone_r> hill??? Wall probably... i am gonna hit it full speed..
2013-06-12T21:03:00 < jpa-> not necessarily
2013-06-12T21:03:08 < zyp> jpa-, could arguably be better than arduino, since you might learn how to do stuff right the first time around
2013-06-12T21:03:47 < jpa-> zyp: yeah, but that was the counterargument only to the "fastest" point :P
2013-06-12T21:03:56 < jpa-> arduino libraries aren't really all that bad
2013-06-12T21:04:18 < jpa-> someone_r: does coocox come with examples on how to use i2c?
2013-06-12T21:04:19 < zyp> the parts I've seen of the API is not very good
2013-06-12T21:04:47 < ossifrage> really the stm32s are pretty easy to use from bare metal and a datasheet
2013-06-12T21:05:09 <+Steffanx> For someone that has experience datasheets etc. :)
2013-06-12T21:05:26 < zyp> ossifrage, at least not significantly harder than other chips
2013-06-12T21:05:30 < ossifrage> well reference manual, not a datasheet
2013-06-12T21:06:18 < Thorn> and the ARM ARM and the Joseph Yiu book
2013-06-12T21:06:27 < ossifrage> as long as you have a debugger with breakpoints, it is pretty straight forward
2013-06-12T21:06:48 < jpa-> ossifrage: per my experience, even the I2C peripheral itself is full of gotchas that take long to resolve
2013-06-12T21:07:16 <+Steffanx> Joseph Yiu book the guide to m0, Thorn?
2013-06-12T21:07:19 < someone_r> in coocox i can add I2C pheriferal and it adds several files on my project...
2013-06-12T21:07:22 <+Steffanx> oh he has more
2013-06-12T21:07:36 < Thorn> guide to m3 and guide to m0
2013-06-12T21:07:39 < Thorn> afaik
2013-06-12T21:07:47 <+Steffanx> m4 even nowadays
2013-06-12T21:08:00 <+Steffanx> Is that really a 'must' read?
2013-06-12T21:08:06 < GargantuaSauce> really with a month i think you can do this from scratch
2013-06-12T21:08:19 <+Steffanx> You GargantuaSauc..
2013-06-12T21:08:22 < jpa-> GargantuaSauce: without the necessary knowledge?
2013-06-12T21:08:33 < jpa-> it's a lot to learn in a month
2013-06-12T21:09:25 < Thorn> Steffanx: I believe so. the ARM ARM is not easy to learn from. sure is good as a reference etc.
2013-06-12T21:09:30 <+Steffanx> ( did you read those books Thorn ? )
2013-06-12T21:09:32 < ossifrage> jpa-, I'm just in the process of getting interrupt driven i2c on the F0
2013-06-12T21:10:06 < Thorn> most of the m3 one and about a half of the m0 one
2013-06-12T21:10:25 < karlp> I'm with jpa, you could do this in a month full time, but it will be an adventure.
2013-06-12T21:10:30 < Thorn> the m3 book is now updated with m4 information http://www.goodreads.com/book/show/17070271-the-definitive-guide-to-arm-r-cortex-r--m3-and-cortex-m4-processors
2013-06-12T21:10:31 <+Steffanx> 45e .. man why so expensive.
2013-06-12T21:10:53 < karlp> oh and yeah, f100 is for all intents and purposes the samea s the bigger ones, just less ram/speed/periphs
2013-06-12T21:11:08 < Thorn> some people have somewhat cheaper electronic versions if you know what I mean
2013-06-12T21:11:10 < GargantuaSauce> why do you need arm-specific documents? you're writing a c program like any other
2013-06-12T21:11:19 < GargantuaSauce> only thing really hardware specific is the peripherals
2013-06-12T21:11:34 <+Steffanx> I think i know what you mean Thorn :P
2013-06-12T21:12:08 < jpa-> GargantuaSauce: and the interrupts
2013-06-12T21:12:14 < jpa-> GargantuaSauce: and hardfaults, when it crashes
2013-06-12T21:13:07 < Thorn> there'a a whole lot that you need to know about the core even if you only use C[++]
2013-06-12T21:13:50 <+Steffanx> someone_r, see how hard it is. Even those guys about cant agree on this :P
2013-06-12T21:13:54 <+Steffanx> *above
2013-06-12T21:14:12 < jpa-> "about" is fine also
2013-06-12T21:15:03 <+Steffanx> My parser doesn't like "about" in that sentence
2013-06-12T21:15:29  * jpa- hovers about Steffanx 
2013-06-12T21:15:34 < GargantuaSauce> around and about
2013-06-12T21:16:01 <+Steffanx> Great fun
2013-06-12T21:16:20 < GargantuaSauce> what confuses me is that around does not mean edged, and about does not mean a long-term occurrence
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2013-06-12T21:17:26 < someone_r> you know what... we will see... i am the guinea pig of the case...
2013-06-12T21:17:29 <+Steffanx> So, conclusion: you'll stop using those word and ask us to stop using them as well?
2013-06-12T21:17:35 <+Steffanx> *words
2013-06-12T21:17:54 < GargantuaSauce> yes
2013-06-12T21:18:00 < GargantuaSauce> but not just those two
2013-06-12T21:18:11 < GargantuaSauce> the entire english language is far too illogical for my tastes
2013-06-12T21:18:21 < GargantuaSauce> i demand the proceedings of this channel continue in lojban only
2013-06-12T21:18:59 < Thorn> geek level counter overflow
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2013-06-12T21:21:17 < GargantuaSauce> huh, my APB1 is not running at the frequency i am expecting it to
2013-06-12T21:22:13 < zyp> remember that f4 timers are not necessarily running at APB frequency
2013-06-12T21:22:35 < GargantuaSauce> that is a thing i indeed forgot
2013-06-12T21:22:42 < GargantuaSauce> not for the first time either!
2013-06-12T21:23:40 < GargantuaSauce> and surely not the last
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2013-06-12T21:44:03 < someone_r> so instead of coocox what would you suggest... something free and powerful
2013-06-12T21:47:49 < GargantuaSauce> there are people in here that swear by chibios, and libopencm3 is probably also an option
2013-06-12T21:48:45 < GargantuaSauce> i am of the opinion that any big library like that will have a list of gotchas almost as long as that of the hardware itself, and thus the only real advantage to using them is for the HAL if you're writing something to work on different chips
2013-06-12T21:51:01 < someone_r> what about openocd
2013-06-12T21:51:02 < someone_r> ?
2013-06-12T21:51:33 < GargantuaSauce> that is just what you'll be using to communicate with the stlink to flash the mcu
2013-06-12T21:51:47 < someone_r> ok
2013-06-12T21:51:53 < karlp> coocox is and ide, chibios is an OS, libopencm3 is just a low level hal...
2013-06-12T21:52:03 < karlp> openocd is debug middleware, none of these really compete
2013-06-12T21:52:09 < GargantuaSauce> oh i thought coocox had a big monolithic library associated with it
2013-06-12T21:53:27 < karlp> just helpers for pulling st stdperiph lib into your project I thought.
2013-06-12T21:54:13 < GargantuaSauce> http://www.coocox.org/cox.html bit of both i guess
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2013-06-13T00:43:33 < Laurenceb_> http://www.epicfail.net/wp-content/uploads/2013/01/20130114-182216.jpg
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2013-06-13T01:25:14 <+Steffanx> stfu with your photoshopped crap Laurenceb_
2013-06-13T01:27:20 < emeb> is that another <not clicking> link?
2013-06-13T01:35:15 <+Steffanx> another one with his favourite object, yes
2013-06-13T01:36:03 < zyp> I bet Laurenceb_ is so jealous because I were at Kanamara Matsuri and he weren't
2013-06-13T01:36:37 < Laurenceb_> dont even know what that nerd crap is
2013-06-13T01:36:41 < Laurenceb_> now who is the loser
2013-06-13T01:37:07 < zyp> http://bin.jvnv.net/f/0XIwA.jpg <- well, I took this photo there
2013-06-13T01:37:27 < zyp> and a bunch of other ones
2013-06-13T01:38:38 < Laurenceb_> that shits only funny on the internets
2013-06-13T01:38:54 < emeb> Oh those crazy Japanese and their phallocentric religious events.
2013-06-13T01:43:41 < zyp> emeb, you can say that, but I haven't seen as many foreigners gathered in one place in japan as there were there :p
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2013-06-13T01:44:02 < emeb> Somehow I'm not surprised by that. Gawkers.
2013-06-13T01:45:10 < zyp> I can't really blame anybody either, considering I also were a foreigner there :p
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2013-06-13T01:45:28 < emeb> :)
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2013-06-13T01:45:54 < baird> Everyone loves to photograph a dick..
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2013-06-13T02:02:56 < Laurenceb_> http://en.wikipedia.org/wiki/Intercal#Hello.2C_world
2013-06-13T02:03:49 < Laurenceb_> http://en.wikipedia.org/wiki/Shakespeare_%28programming_language%29#Example_code
2013-06-13T02:03:51 < Laurenceb_> i lolled
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2013-06-13T04:18:07 < upgrdman> anyone use dry film solder mask? i keep getting bubbles when i laminate :/ made sure the board was dry before apply the film, and i let the film meet the board at the laminator
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2013-06-13T04:44:24 < flop> where can I buy a dong?
2013-06-13T04:46:11 < upgrdman> at the ding ding ding dongs store?
2013-06-13T04:52:19 < emeb_mac> silly person - you don't buy them. You are born with them.
2013-06-13T04:54:22 < upgrdman> check the ongle of the dongle
2013-06-13T04:57:49 < flop> well, half of the population do not have dongs
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2013-06-13T12:05:59 < dongs> <h3X^> if i have 81 series capacitors at 5F each, is total capacitance (5^81)/(5*81)?
2013-06-13T12:06:02 < dongs> <h3X^> or does that formula only work for 2 caps?
2013-06-13T12:06:05 < dongs> super cool homework
2013-06-13T12:07:15 < Thorn> the last thing you would want to do with 81 5F caps is put them in series.
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2013-06-13T12:19:09 < jon1012> parallel seems better :)
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2013-06-13T12:23:04 <+Steffanx> I bet they also made fun of you back in your younger ages
2013-06-13T12:23:13 <+Steffanx> , dongs
2013-06-13T12:24:18 < baird> fixed -- <Thorn> the first thing you would want to do with 81 5F caps is put them in series.
2013-06-13T12:25:09 < baird> Still, parallel would be where the real fun is
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2013-06-13T12:30:17 < jpa-> dongs: 1/(1/5F * 81) = 5F / 81
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2013-06-13T13:55:55 < trepidaciousMBR> jpa-: I was just wondering - is it possible to use nanopb to verify a message by "decoding" it without actually storing the result? E.g. by passing a null pointer to pb_decode?
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2013-06-13T14:07:46 < Thorn> http://www.independent.co.uk/news/world/europe/mafia-planned-to-use-drones-to-assassinate-its-enemies-in-1990s-says-informant-8656148.html
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2013-06-13T14:15:06 < baird> Thorn: Jef Raskin (ex-Appleproposed the idea as well around about that time..
2013-06-13T14:16:40 < baird> His blog talked their use as a WMD.. (Anthrax, et.al)
2013-06-13T14:18:34 < baird> And actually the Japanese tested the idea during WWII to start wildfires in the States..
2013-06-13T14:19:37 < karlp> v1/v2 count as drones don't they?
2013-06-13T14:19:52 < Thorn> so, why no assassin quadcopters yet?
2013-06-13T14:20:19 < karlp> because assassin fixed wings alredy work well enough?
2013-06-13T14:21:18 < Thorn> that's too big and  conspicuous for many uses
2013-06-13T14:21:19 < inca> Thorn: who says there aren't?
2013-06-13T14:23:41 < baird> Use your skillz to rob banks! http://www.imdb.com/title/tt0091464/
2013-06-13T14:25:33 < inca> Might have to do that to start balancing the budget, I hear
2013-06-13T14:28:22 < trepidaciousMBR> inca: Did you get the thing with the hang on MAC fixed?
2013-06-13T14:29:29 < inca> trepidaciousMBR: So far, it appears to be fairly reliable. I have not tested it thoroughly, but the link with the patch worked great, though it does not appear to be in the -head git branch.
2013-06-13T14:30:44 < trepidaciousMBR> inca: I'm not sure I've got all the details, but I saw you referenced the problem where the mac driver hangs on init, I was wondering if it was due to using a PHY that generates the 50MHz clock for MCU? I had a similar thing...
2013-06-13T14:32:19 < inca> I am running MII, as opposed to RMII, so I am at 25 MHz. The PHY does indeed generate the 25 MHz, which is then used for comms with the MCU, so I need to have it enabled in the other-than-default order.
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2013-06-13T14:35:08 < jpa-> trepidaciousMBR: not currently, no
2013-06-13T14:35:36 < trepidaciousMBR> jpa-: Ah thanks, I've found another way round it, it's probably not that useful in general
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2013-06-13T14:36:02 < jpa-> yeah; would be possible to add but i'd need a compelling use case to justify the code size increase
2013-06-13T14:36:18 < trepidaciousMBR> I have some messages that I store to use later, and it would be nice to check them when I receive them, without needing memory to actually store the decoded result
2013-06-13T14:36:21 < inca> trepidaciousMBR: I think you are right, in other words. Thanks for the follow up. =)
2013-06-13T14:36:42 < trepidaciousMBR> but I've realised there is a buffer I can reuse
2013-06-13T14:36:48 < trepidaciousMBR> inca: Ah good :)
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2013-06-13T15:01:02 < karlp> damnit, m24lr disco board needs an old style jumbotron usb B cable.
2013-06-13T15:01:09 < karlp> but it has rubber feet! whee!
2013-06-13T15:05:10 < karlp> ohoh, st's trying to do mass storage again, this can't end well.
2013-06-13T15:05:34 < karlp> hid-generic 0003:0483:D0D0.0006: hiddev0,hidraw5: USB HID v1.10 Device [STMicroelectronics STM32 Mass Storage] on usb-0000:00:1d.0-1.1/input1
2013-06-13T15:05:40 < karlp> what is that even doing?
2013-06-13T15:05:42 < Laurenceb> whats up with their mass storage?
2013-06-13T15:05:56 < karlp> well, they failed pretty hard on the f100 VL disco board,
2013-06-13T15:06:16 < karlp> this disco board is also trying to be something mass storage, but it's not popping up as a drive or anything
2013-06-13T15:06:33 < Laurenceb> anything in /dev  ?
2013-06-13T15:07:11 < karlp> yeah, I got a new hidraw5
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2013-06-13T15:08:01 < karlp> doesn't seem to have anything else.
2013-06-13T15:08:23 < karlp> this is cool! the stm8l board runs the lcd and displays power usage and things when you put it near the reader board
2013-06-13T15:09:16 < Laurenceb> how is it powered?
2013-06-13T15:10:35 < karlp> from the rf coil
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2013-06-13T15:15:52 < dongs> karlp: thats a 32meg fakestorage thing
2013-06-13T15:15:55 < dongs> that just has 2 files in it
2013-06-13T15:16:01 < dongs> .url links to crap on st.com
2013-06-13T15:16:16 < dongs> its r/o and obviously not 32megs
2013-06-13T15:16:43 < dongs> probably just raw filesystem that it returns when block is requested and then the rest is nulls
2013-06-13T15:18:58 < karlp> yeah, just like the stm32vl failstorage
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2013-06-13T15:30:39 < dongs> prett sure those links are useless now too
2013-06-13T15:30:41 < dongs> with the  "new" site
2013-06-13T15:30:47 < qyx_> http://i.imgur.com/p2Nqss3.png
2013-06-13T15:30:50 < qyx_> what could be that?
2013-06-13T15:31:01 < qyx_> the fft view is about 300kHz wide
2013-06-13T15:31:03 < dongs> looks cool
2013-06-13T15:31:16 < qyx_> i have constant line at about 200kHz and don't know what it is
2013-06-13T15:31:27 < qyx_> probably software error or something like that
2013-06-13T15:31:38 < dongs> whats it sound like
2013-06-13T15:31:39 < qyx_> i cannot see it on my scope's fft
2013-06-13T15:31:54 < qyx_> don't know, it is from my low freq loop antenna
2013-06-13T15:32:12 < qyx_> the lines on the left are probably light ballasts and some dc-dc converters around
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2013-06-13T16:41:22 < zeropointo> what are some reasons a systick inturrupt wouldn't be called on a Cortex-M3
2013-06-13T16:41:51 < zyp> systick not being enabled
2013-06-13T16:44:02 < Thorn> stuck in a higher priority handler
2013-06-13T16:44:22 < Thorn> like hard fault lol.
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2013-06-13T16:46:20 < zyp> and finally interrupts being disabled
2013-06-13T16:47:02 < Thorn> cpu lockup
2013-06-13T16:47:20 < gxti> cpu sleeping, VCC too low, VCC too high, smoking crater where the IC used to be, spacetime paradox
2013-06-13T16:47:52 < zeropointo> hmm, thanks I'll check each of those. ;)
2013-06-13T16:48:11 < zyp> cpu sleeping is not a problem, except for deep sleep modes where it's unclocked
2013-06-13T16:48:42 < zeropointo> if it turns out someone killed my CPU's grandfather I'll let you know.
2013-06-13T16:49:39 < zeropointo> i think the interrupts arn't properly enabled.
2013-06-13T16:49:56 < zyp> did you disable them?
2013-06-13T16:50:19 < Thorn> they are enabled by default, it's not avr
2013-06-13T16:50:25 < zeropointo> well i just took over someone elses project so i'm not sure what's happening. lol
2013-06-13T16:50:34 < zyp> as long as you didn't disable them, they are enabled
2013-06-13T16:51:03 < zyp> and there is no other gates on systick than ENABLE and TICKINT in SYSTICK_CSR
2013-06-13T16:51:23 < zeropointo> i see
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2013-06-13T16:59:59 < zeropointo> the old version of stm32f10x_nvic.h from the STM std perif lib used to contain this define: #define SystemHandler_SysTick        ((u32)0x02C39A) /* SysTick Handler */
2013-06-13T17:00:18 < zeropointo> that was the 2007 version and i'm not sure what to replace it with in the 2011 version
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2013-06-13T17:01:22 < dongs> uh wat
2013-06-13T17:05:10 < zeropointo> i'm not sure what SystemHandler_SysTick has been renamed as in the 2011 version.
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2013-06-13T17:15:35 < dongs> that doesnt even make sense
2013-06-13T17:15:46 < dongs> the vector names are in startup asm
2013-06-13T17:16:14 < Thorn> found that header http://lxyppc-tetrix.googlecode.com/svn/trunk/SuperJoystick/FWLib/inc/stm32f10x_nvic.h
2013-06-13T17:16:19 < Thorn> wtf are those defines
2013-06-13T17:16:24 < dongs> no idea
2013-06-13T17:16:33 < dongs> some kinda magic numbers for something weird?
2013-06-13T17:17:27 < Thorn> there has to be something equivalent in the modern stdperiph lib but I can't think of anything
2013-06-13T17:17:47 < Thorn> is that NVIC config (enable/disable vector) or what?
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2013-06-13T17:22:09 < Thorn> http://bit.ly/15088zS
2013-06-13T17:22:27 < Thorn> >You'd typically use NVIC_SystemHandlerConfig(), NVIC_SystemHandlerPriorityConfig() from the older library, or NVIC_SetPriority() from the newer ones.
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2013-06-13T17:32:50 < zeropointo> This code i'm worknig on is extremely old and porely written... Thanks thorn.
2013-06-13T17:33:35 < Thorn> looks like nobody in this channel has even seen the version of the library your code is using lol.
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2013-06-13T17:34:30 < zeropointo> well i'm updating it to the new libs. but there have been MANY changes since 2007...
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2013-06-13T17:35:13 < Laurenceb> http://www.google.co.uk/patents/US3216423
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2013-06-13T17:40:14 < zeropointo> So if i'm understanding this then NVIC_SystemHandlerPriorityConfig(SystemHandler_SysTick, 2, 0); from the 2007 lib transates into NVIC_SetPriority(SysTick_IRQn, 2); in the 2011 lib...
2013-06-13T17:45:22 < dongs> sounds about right
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2013-06-13T18:46:15 < Thorn> http://theumlaut.com/2013/06/12/power-not-privacy/
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2013-06-13T19:10:46 < dongs> what is this crap
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2013-06-13T19:33:29 < GargantuaSauce> what really bothers me about that business is that anyone thinks it's news
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2013-06-13T19:35:20 < dongs> yeah
2013-06-13T19:35:43 < dongs> give faggots reasons to tweet
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2013-06-13T19:44:32 <+dekar_> there's an stm32 in the new macbook :)
2013-06-13T19:45:25 < zyp> used to be stellaris in older ones, IIRC
2013-06-13T19:45:42 < karlp> nice one bruvvah: http://pastebay.net/1239924
2013-06-13T19:45:47 < Laurenceb> link
2013-06-13T19:45:48 < emeb> huh. thought that the macbooks were haswell-based. :P
2013-06-13T19:46:03 < Laurenceb> beowolf cluster of stm32s
2013-06-13T19:46:37 <+dekar_> karlp, what language is that?
2013-06-13T19:47:19 < Thorn> looks like python
2013-06-13T19:48:38 < Laurenceb> http://d3nevzfk7ii3be.cloudfront.net/igi/l4wuZsbCoTAiyXdP.large
2013-06-13T19:48:42 <+dekar_> Laurenceb, http://d3nevzfk7ii3be.cloudfront.net/igi/l4wuZsbCoTAiyXdP
2013-06-13T19:48:47 <+dekar_> hm
2013-06-13T19:48:48 < Laurenceb> lol
2013-06-13T19:48:49 <+dekar_> XD
2013-06-13T19:49:22 < Laurenceb> an F1, interesting
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2013-06-13T19:50:40 < zyp> where is that?
2013-06-13T19:50:50 < zyp> touchpad?
2013-06-13T19:51:14 <+dekar_> yeah
2013-06-13T19:52:10 <+dekar_> I'm pretty sure the f1 is more than enough µC for a trackpad :D
2013-06-13T19:52:46 < Thorn> what did you expect. apple is known for weird ass hardware designs
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2013-06-13T19:53:39 < zyp> what's weird about using a usb-capable mcu for stuff like that?
2013-06-13T19:55:26 < zyp> hmm, the touchpad and mcu is a single usb device in my 2011 macbook
2013-06-13T19:55:38 < zyp> eh
2013-06-13T19:55:43 < zyp> touchpad and keyboard I mean
2013-06-13T19:59:23 <+dekar_> since they're using the BGA version they probably have enough pins to do keyboard as well
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2013-06-13T20:01:34 < zyp> http://d3nevzfk7ii3be.cloudfront.net/igi/fQOaRKtLVVUVSUBU <- the one I have appears to have the controller chips sitting on the motherboard itself though
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2013-06-13T20:30:41 < Luggi09> does anyone know what the TIM1_CHxN are compared to TIM1_CHx on the STM32f303 ?
2013-06-13T20:30:58 < zyp> it's negative
2013-06-13T20:31:09 < Luggi09> that means inverted ?
2013-06-13T20:31:10 < zyp> i.e. same signal, just inverted
2013-06-13T20:31:21 < zyp> well, actually
2013-06-13T20:31:53 < zyp> I think you can insert a gap between them
2013-06-13T20:31:58 < Luggi09> thanks, I allready guessed it could be that, they just didn't explicitly mention it
2013-06-13T20:32:15 < Luggi09> so it's probably for motor control
2013-06-13T20:32:20 < zyp> yep
2013-06-13T20:33:07 < zyp> the gap is for avoiding stuff like shoot-through when controlling both a low-side and high-side transistor
2013-06-13T20:34:17 < Luggi09> protection from the magic smoke ^^
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2013-06-13T20:47:20 < Thorn> https://en.wikibooks.org/wiki/Circuit_Idea
2013-06-13T21:08:08 <+Steffanx> wut Thorn :S
2013-06-13T21:09:46 < Thorn> have I accidentally posted a link to my favorite porn or something?
2013-06-13T21:12:38 <+Steffanx> Dont know if this is your favourite
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2013-06-13T21:25:59 < Thorn> it says a toilet tank is an example of a relaxation oscillator.
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2013-06-13T22:01:37 < jpa-> hmm.. is 5 instructions per pixel for a font decompressor slow or fast?
2013-06-13T22:09:41 < emeb> toilet tank isn't an oscillator unless it flushes itself.
2013-06-13T22:10:43 < jpa-> monostable?
2013-06-13T22:11:00 < emeb> yeah
2013-06-13T22:11:25 < jpa-> oh well, it would be "monostable multivibrator" not "monostable oscillator"
2013-06-13T22:12:14 < emeb> I wonder what "multi" means in multivibrator.
2013-06-13T22:12:16 < Thorn> multivibrator is a specific curcuit topology  no?
2013-06-13T22:12:58 < jpa-> emeb: wikipedia suggests it is because of the square wave output => many frequencies
2013-06-13T22:13:26 < emeb> so if you could change the fill rate on the toilet it would qualify for "multi".
2013-06-13T22:13:42 < emeb> I suppose adjusting the cut-off valve to be partially-on would do that.
2013-06-13T22:14:16 < jpa-> i don't think you need to change anything - atleast my toilet has pretty sharp edges when the valve switches on/off
2013-06-13T22:14:29 < jpa-> you can hear the harmonics ring along the pipes :P
2013-06-13T22:15:29 < Thorn> I'm in a conversation about rise time in a toilet.
2013-06-13T22:16:12 < jpa-> also fall time
2013-06-13T22:16:55 < jpa-> hmm.. maybe if the harmonics hit the brown note, we get a true oscillator
2013-06-13T22:18:36 < emeb> har
2013-06-13T22:20:15 < emeb> Now - hydraulic rams are true oscillators. Analogous to a switching power supply (boost mode).
2013-06-13T22:20:28 < Thorn> Toilet Signal Integrity: Handbook of Brown (and Yellow) Magic
2013-06-13T22:21:47 < jpa-> it is important to impedance match your signals to avoid your "packets" reflecting back
2013-06-13T22:22:33 < emeb> here you go: http://www.youtube.com/watch?v=XfW0ke4bwI4
2013-06-13T22:24:15 < ds2> MMmmmm SWR
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2013-06-13T23:13:41 < ossifrage> well at least now I know why my i2c code wasn't working, SCL and SDA where shorted to ground, joy...
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2013-06-13T23:15:34 < mtbg> hi
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2013-06-13T23:16:26 < mtbg> I
2013-06-13T23:16:42 < mtbg> 'm using otg hs in stm32f4 in internal dma mode
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2013-06-13T23:17:25 < mtbg> and occassionally it drops first four bytes of a setup packet on ep0
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2013-06-13T23:21:26 < mtbg> does anyone have an idea what may be wrong with it? I mean, for some setup packets I read data from rx fifo and it has first 4 bytes lost
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--- Day changed Fri Jun 14 2013
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2013-06-14T00:14:51 < someone_r> collect2.exe: error: ld returned 1 exit status
2013-06-14T00:14:59 < someone_r> any idea what is this?
2013-06-14T00:15:25 < ds2> what does it say before this?
2013-06-14T00:16:06 < someone_r> [cc] lto-wrapper: C:\Program Files (x86)\GNU Tools ARM Embedded\4.7 2013q1\bin\arm-none-eabi-gcc returned 1 exit status
2013-06-14T00:16:07 < someone_r>        [cc] c:/program files (x86)/gnu tools arm embedded/4.7 2013q1/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/bin/ld.exe: lto-wrapper failed
2013-06-14T00:16:45 < ds2> ewwwwww GCC on windows
2013-06-14T00:16:49  * ds2 runs away
2013-06-14T00:17:11 < someone_r> ahahha yes sorry for that...
2013-06-14T00:17:30 < someone_r> that is what i got... i have to be flexible and work with the tools that i have...'
2013-06-14T00:18:13 < ds2> windows adds a new dimension of problems
2013-06-14T00:18:49 < someone_r> anyway i am tring to play with interrupts... so i am coping and pasting the code from many sources...and is clearly a mess...
2013-06-14T00:19:01 < Thorn> there should be a link error message before that
2013-06-14T00:19:43 < someone_r> \Temp\ccKhrkDH.s:244: Error: offset out of range
2013-06-14T00:20:37 < Thorn> what toolchain are you using, what flags
2013-06-14T00:20:54 < someone_r> mmm
2013-06-14T00:21:05 < someone_r> no idea what that is
2013-06-14T00:21:47 < someone_r> coocox
2013-06-14T00:21:51 < someone_r> ide
2013-06-14T00:22:37 < karlp> anyone got any advice on logging usb traffic in linux with a windows vm?
2013-06-14T00:22:50 < karlp> snoopypro is... not workign quite the way it is advertised too, but I may be driving it wrong.
2013-06-14T00:23:15 < Thorn> I heard wireshark can capture usb traffic in linux
2013-06-14T00:23:43 < qyx_> tried that last time, ot works
2013-06-14T00:23:44 < qyx_> it
2013-06-14T00:24:13 < Thorn> although I think it captures URPs, not raw traffic
2013-06-14T00:25:28 < karlp> that's probably good enough.
2013-06-14T00:28:09 < karlp> hrmm, how to work out the usbmon number...
2013-06-14T00:28:39 < karlp> hrmm, will it work when I give the device to the windows vm?
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2013-06-14T00:32:28 < karlp> ok, that seemd to capture the trace
2013-06-14T00:32:34 < karlp> 4500 damn packets, but ok :)
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2013-06-14T00:35:17 < karlp> is getting lots and lots of -EINPROGRESS expected?
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2013-06-14T00:44:05 < ossifrage> I have a RGB LED connected to TIM2 and TIM1. On startup I get a blink on TIM2, but not on TIM1
2013-06-14T00:44:19 < ossifrage> The blink happens when I connect the GPIO to the timer
2013-06-14T00:56:10 < Thorn> http://www.wireshark.org/lists/wireshark-users/201304/msg00034.html
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2013-06-14T00:59:28 < karlp> I think I've got enough of the details for the first little project, rebuilding silabs "set serial number" thing,
2013-06-14T00:59:37 < karlp> turns out they also provide linnux and mac tools for customizing it...
2013-06-14T01:00:01 < karlp> getting the nfc reader thingy ding useful things is a much bigger project...
2013-06-14T01:03:09 < zyp> looked any more at nfc chipsets?
2013-06-14T01:05:55 < karlp> nah, just planning on using this one as a reader module.
2013-06-14T01:06:03 < karlp> bought a roll of TI tags to stick on things.
2013-06-14T01:06:10 < karlp> feels very industrial,
2013-06-14T01:06:30 < karlp> the m24lr demo kit is cool
2013-06-14T01:06:47 < karlp> st's windows softwars is bizarro world as usual though
2013-06-14T01:07:19 < karlp> would like to hack the usb enough to be able to get dumps out of the tags from linux
2013-06-14T01:09:34 < zyp> I've considered buying one, since I could fit laks right on it, but it's kinda pointless when the chips are not available from any of the usual distributors when I want to make my own board
2013-06-14T01:10:26 < karlp> yeah, I'm a long way from making my own board.
2013-06-14T01:10:36 < karlp> still no real clue what I'll do with rfid/nfc,
2013-06-14T01:10:53 < karlp> got a 125khz reader and now this, and some tags,
2013-06-14T01:10:55 < zyp> I think the guys at work doing a nfc project are picking NXP PN532, but it doesn't support all the modes I'd like for my own project
2013-06-14T01:11:39 < zyp> there is also a PN534 which does, but it's only available in 0.5mm pitch TFBGA, and that doesn't sound appealing
2013-06-14T01:12:50 < zyp> TI had a chipset which seems nice, available from digikey and all
2013-06-14T01:13:01 < karlp> I reckon the demokit is enough for me to work with for now, until I have a clue what I'm really doing...
2013-06-14T01:13:04 < zyp> also has a demoboard, but it's $99 and based on MSP430
2013-06-14T01:15:58 < zyp> hmm
2013-06-14T01:16:16 < zyp> this also looks nice: http://www.nxp.com/products/identification_and_security/reader_ics/nfc_contactless_reader_ics/series/CLRC663.html
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2013-06-14T03:36:13 < zyp> http://www.ti.com/tool/trf7970atb <- oh, it has a $49 devboard without mcu too
2013-06-14T03:36:37 < zyp> that one looks pretty nice, and chip seems to support all common standards
2013-06-14T03:37:09 < karlp> what are you looking for in a dev board?
2013-06-14T03:38:16 < karlp> that's a nice kit, includes a bag of transpoders too
2013-06-14T03:38:22 < zyp> something I can hook up to something I can easily run laks on
2013-06-14T03:39:29 < zyp> the list of features for the chip says «Completely Integrated Protocol Handling for ISO15693, ISO18000-3, ISO14443A/B, and FeliCa», so I guess that means less low-level code for me to write
2013-06-14T03:39:58 < zyp> and the chip is cheaper than the NXP chip I were looking at
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2013-06-14T05:40:56 < Sector_0> I need a little help understanding this prescaler concept
2013-06-14T05:41:13 < Sector_0> I'm using TIM2 on the APB2
2013-06-14T05:42:03 < Sector_0> now if the clock of the APB2 is 42MHz...if I use a prescaler of 2 does that mean the timer will operate at 21MHz?
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2013-06-14T05:43:01 < dongs> its either /pre or /pre-1
2013-06-14T05:43:11 < dongs> you can easily check that tho
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2013-06-14T05:53:34 < Sector_0> dongs: huh?
2013-06-14T05:59:44 < dongs> i mean
2013-06-14T05:59:48 < dongs> prescaler is divisor, yes
2013-06-14T06:00:44 < dongs> but i forget if 0 is valid, and thus PRE_1 = /2 or whether it starts at PRE_1 = /1, PRE_2 = /2 etc. I think its the latter tho
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2013-06-14T06:04:40 < flop> ding dongs
2013-06-14T06:10:40 < dongs> hostess is 404
2013-06-14T06:10:42 < Sector_0> dongs: oh ok
2013-06-14T06:21:05 < ossifrage> Him, still can't figure out why I'm getting a spirious edge when first connecting the timer to a GPIO.
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2013-06-14T06:27:23 < flop> GPIO as output?
2013-06-14T06:27:51 < ossifrage> found the problem I think
2013-06-14T06:27:58 < flop> what was it?
2013-06-14T06:28:10 < ossifrage> (will know in a few minutes)
2013-06-14T06:28:42 < flop> let us know your findings
2013-06-14T06:29:06 < ossifrage> I think it is an order of operations problem configuring the GPIO
2013-06-14T06:30:10 < flop> ah. a hardware bug?
2013-06-14T06:30:10 < ossifrage> (nope, that didn't fix the problem...)
2013-06-14T06:30:29 < ossifrage> so it only seems to happen for the open drain output
2013-06-14T06:31:08 < flop> what's your pull up voltage?
2013-06-14T06:31:57 < ossifrage> I have a RGB LED connected to 3 open-drain inputs with the GPIO mapped to the timer alt function
2013-06-14T06:32:24 < ossifrage> I get a very short pulse with all 6 LEDs coming on
2013-06-14T06:33:42 < ossifrage> I can fiddle around with the order and I managed to get the pulse to go away with a TIM1 but not TIM2
2013-06-14T06:34:23 < ossifrage> (but now I can't seem to reproduce that)
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2013-06-14T06:35:04 < flop> your leds sinked from what voltage?
2013-06-14T06:35:12 < ossifrage> 3.3v
2013-06-14T06:35:47 < ossifrage> it is a really nice bright pulse, I'm not sure how many clocks the pulse lasts...
2013-06-14T06:36:08 < flop> using which compiler?
2013-06-14T06:36:13 < ossifrage> gcc
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2013-06-14T06:39:37 < ossifrage> so I just tried single stepping through the GPIO initialization and it didn't bloody blink
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2013-06-14T07:02:20 < dongs> ossifrage: wat, opendrain?
2013-06-14T07:02:30 < dongs> also, did you put I/O high or whatever before making it timers
2013-06-14T07:02:41 < dongs> foo->ODR
2013-06-14T07:03:37 < ossifrage> the light blinks when I connect the GPIO to the timer, I don't use odr, I used bsrr
2013-06-14T07:03:44 < dongs> or that
2013-06-14T07:03:59 < ossifrage> but I did set the pin to 1 when configuring the gpio
2013-06-14T07:04:33 < ossifrage> I set bsrr, ospeedr, pupdr, afrl, afrh, moder
2013-06-14T07:04:56 < ossifrage> I couldn't seem to get it to blink when I single stepped, which may be a clue
2013-06-14T07:17:46 < ossifrage> so if I put some delays between writing the gpio registers I don't get a flash
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2013-06-14T07:22:55 < ossifrage> it takes a big delay between setting afr[lh] and moder to prevent the flash
2013-06-14T07:39:40 < ossifrage> Okay, so this is odd, the flash goes away if I don't use fast mode (ccmr.ocfe)
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2013-06-14T08:58:35 < R2COM> are most of those RC Receivers have 5V control signal?
2013-06-14T08:58:42 < R2COM> their outputs is 5V logic?
2013-06-14T08:58:56 < R2COM> as far as I saw from several yes, but I just curious about most
2013-06-14T08:59:49 < R2COM> heh..even for those which I see there is no diagram of VOH/VOL levels
2013-06-14T08:59:57 < R2COM> amateur shit always will stay amateur shit
2013-06-14T09:02:40 < GargantuaSauce> standards are for chumps
2013-06-14T09:02:48 < GargantuaSauce> and specifications
2013-06-14T09:03:38 < R2COM> what?
2013-06-14T09:04:48 < GargantuaSauce> you are going to plug it in and see if it works and you are going to like it
2013-06-14T09:05:13 < R2COM> but what if there are variations then
2013-06-14T09:05:32 < R2COM> fuck that shit, basic specs need to be stated
2013-06-14T09:10:13 < R2COM> most of them state input voltage like: 3.7 - 9.6 volts
2013-06-14T09:10:41 < R2COM> but its actually the output buffer and the internal voltage its fed on what determines min/max signal levels
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2013-06-14T13:11:23 < mtbg> does anyone here have a working code for usb hs device (stm32f4) using internal dma?
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2013-06-14T13:38:23 < dongs> isnt DMA about the only way to get anything into usb
2013-06-14T13:43:18 < mtbg> it isn't, you can push data into fifo manually
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2013-06-14T13:50:08 < inca> has anyone here ever "usefully" strobed an LED at around 4 kHz?
2013-06-14T13:51:23 < dongs> define "useful"
2013-06-14T13:51:33 < dongs> 4kHz wouldnt be visible
2013-06-14T13:52:22 < inca> the phenomena that I am tracking is, at its fastest, 4 kHz. Slowest is around 600 hz.
2013-06-14T13:52:57 < inca> I would like to use a strobing LED setup with fine frequency control to give a first glance type feedback to the experimenter
2013-06-14T13:54:41 < mtbg> use a pwm channel then
2013-06-14T13:58:27 < inca> wow… the F4 can do up to 150 mA source/sink on IO?
2013-06-14T13:59:20 < inca> mtbg: thanks. I actually had not thought of the PWM peripheral in a while.
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2013-06-14T14:00:26 < rigid> arent't LEDs too slow for a 4kHz strobe?
2013-06-14T14:01:00 < inca> I have photodetectors, so I can find out
2013-06-14T14:01:03 < rigid> like that they wouldn't be completly off/on at 4kHz
2013-06-14T14:01:17 < inca> I may need a totem pole driver setup to quench them
2013-06-14T14:01:33 < rigid> inca: i guess you could use multiple arrays of LEDs like it's done with high frequency flash strobes
2013-06-14T14:01:45 < inca> That I have. =)
2013-06-14T14:02:03 < rigid> nice :)
2013-06-14T14:03:56 < inca> looks like there are only two PWMs. May have to use GPTs in order to do the LED array.
2013-06-14T14:04:04 < inca> (on the F4)
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2013-06-14T14:16:31 < karlp> inca: what do you mean by "first glace feedback"?
2013-06-14T14:16:43 < karlp> I don't get what you mean to show 600-4k on a led?
2013-06-14T14:17:26 < inca> karlp: I mean to use strobing as the mechanism for giving the experimenter immediate feedback regarding the frequency of this phenomena.
2013-06-14T14:17:51 < karlp> so strobing at what, some rate proportional to it?
2013-06-14T14:18:01 < inca> audio would probably be better if I could get a good enough pulse out of a detector
2013-06-14T14:18:13 < inca> it's a coil, I am measuring the coiling rate
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2013-06-14T14:18:27 < karlp> what's "coiling rate"?
2013-06-14T14:18:39 < inca> think of it as rotational rate
2013-06-14T14:18:46 < karlp> I don't have a clue what you're doing, to me I'mn just like dongs, "you can't see 4khz on a led"
2013-06-14T14:19:07  * inca shrugs
2013-06-14T14:19:17 < inca> photodetectors exist for a reason
2013-06-14T14:20:04 < inca> anyway, whats important is that their are able to tell which direction the change is. Whether it is faster or slower than before.
2013-06-14T14:20:12 < inca> they're
2013-06-14T14:21:38 < inca> so whether or not you "see" 4kHz is less important than the image which is created with a 4kHz stobbed light on a near 4kHz rotational phenomena
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2013-06-14T14:27:29 < inca> this is going to be very interesting, since the LEDs will be interlaced, the aliased image might "flow" from the change in light source position and direction =)
2013-06-14T14:29:33 < BrainDamage> he's wants to show the beat frequency of the 2
2013-06-14T14:29:45 < BrainDamage> which will be the difference in phase
2013-06-14T14:30:33 < BrainDamage> turntables used that since long time, with a ring of mirrors on the rim and a light fed from mains freq
2013-06-14T14:31:02 < BrainDamage> if you saw the pattern drifting, it meant the freq was not matched
2013-06-14T14:34:54 < inca> BrainDamage: exactly. There are around 7 variables which I am trying to lock down, but systematic characterization is difficult, so developing a human intuition (along with data collection) is necessary before the final design can be made.
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2013-06-14T14:57:26 < karlp> inca, BrainDamage thanks, that makes _much_ more sense now.
2013-06-14T14:57:59 < inca> =)
2013-06-14T15:00:26 < Laurenceb> <inca> you can strobe as fast as you like
2013-06-14T15:00:54 < Laurenceb> i strobe at 12KHz in one of my devices
2013-06-14T15:01:05 < Laurenceb> you can go up to many MHz
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2013-06-14T15:13:56 < qyx_> is there any known bug on f107 while using both eth mac and uart2?
2013-06-14T15:14:36 < inca> qyx_: did you check the priorities in mcuconf.h (assuming chibios)
2013-06-14T15:16:55 < qyx_> all usarts have the same priority
2013-06-14T15:17:13 < qyx_> all work together with mac except usart2
2013-06-14T15:18:47 < inca> I don't have anything on USART2, so I can't test it on my F107
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2013-06-14T15:19:30 < inca> but as the good doctor would say if it hurts to go "like this", don't do it. Perhaps you can work around it?
2013-06-14T15:20:35 < qyx_> no, pcbs are done, i was feeling like the usart should simply work
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2013-06-14T15:21:40 < inca> qyx: unfortunately, that is not the way things work around here. =(
2013-06-14T15:22:56 < inca> if you don't test it, it doesn't exist. Somewhat like the tree which falls in the woods with no one around...
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2013-06-14T15:28:55 < inca> qyx_: does your PHY clock the MAC MII interface on the MCU?
2013-06-14T15:29:42 < inca> in other words, do you have an external clock for the PHY?
2013-06-14T15:29:48 < inca> (external to the MCU)
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2013-06-14T15:31:45 < inca> qyx_: consider applying this patch: http://sourceforge.net/p/chibios/bugs/318/
2013-06-14T15:34:29 < qyx_> no, everything is working correctly if i simply replace usart2 with usart1
2013-06-14T15:34:51 < qyx_> thats not my first board
2013-06-14T15:35:09 < qyx_> i need 3 usarts on that board and all are working except second
2013-06-14T15:35:47 < qyx_> but it is not hardware related, as soon as i enable usart2 using sdstart, mac driver start to fail at dma init
2013-06-14T15:35:58 < inca> I remember reading something about bandwidth of 1st and 2nd usarts being higher than the others, but maybe some sort of interdependence
2013-06-14T15:36:40 < inca> can you stager the usart2 enable after the mac driver start?
2013-06-14T15:36:43 < karlp> check your refman, on some of them, they're connected to different buses,
2013-06-14T15:36:53 < karlp> ie, APB2 vs APB1 or even on AHB itself
2013-06-14T15:37:45 < inca> I get chibios panics when I enable the debug options in lwipopts.h
2013-06-14T15:37:50 < inca> joy
2013-06-14T15:39:24 < inca> looks like a newlib issue
2013-06-14T15:39:29 < inca> chprintf, here we come!
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2013-06-14T15:47:34 < qyx_> omg probably found something
2013-06-14T15:48:54 < qyx_> usart2 is the only usart which shares pins with mii
2013-06-14T15:49:01 < inca> mhmmm
2013-06-14T15:49:10 < inca> damn...
2013-06-14T15:50:31 < qyx_> ok, my fault, i need to remat usart2
2013-06-14T15:50:34 < qyx_> remap
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2013-06-14T15:51:44 < qyx_> that microexplorer thing don't show you if it should be remapped or not and i just blindly believed it :S
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2013-06-14T15:54:13 < inca> qyx_: another day, another dollar. =)
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2013-06-14T15:55:30 < Ranewen> so
2013-06-14T15:55:49 < Ranewen> as you can see i cant be able to host a stable hotspot for more than 5 mins
2013-06-14T15:56:26 < Ranewen> wrong channel :/
2013-06-14T15:59:07 < inca> why is lwip such a PITA to debug?
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2013-06-14T16:06:10 < inca> oh, this is just lovely. ld complains of undefined reference while gcc complains of previous declarations
2013-06-14T16:08:16 < inca> I wonder if anyone has ever gotten lwip to compile without warnings
2013-06-14T16:12:11 < inca> zlog: help
2013-06-14T16:12:11 < zlog> inca: Log stored at http://tom-itx.dyndns.org:81/~tom-itx/irc/logs/%23%23stm32/2013-06-14.html
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2013-06-14T16:16:13 < inca> best to use a hub instead of a switch to debug lwip
2013-06-14T16:17:38 < dongs> ?
2013-06-14T16:17:49 < dongs> or a proper managed siwtch with port mirroring?
2013-06-14T16:18:01 < dongs> i guess youre saying hub because you can sniff all port traffic?
2013-06-14T16:18:16 < inca> right
2013-06-14T16:18:20 < dongs> pfft
2013-06-14T16:18:23 < inca> =)
2013-06-14T16:18:28 < karlp> where do you even buy a hub these days?
2013-06-14T16:18:34 < dongs> dx.com
2013-06-14T16:18:39 < dongs> wehre you buy USB 2.0 high speed USB hub
2013-06-14T16:18:52 < dongs> and get USB1.1 LOWSPEED hub made on 1sided phenol pcb
2013-06-14T16:20:18 < Laurenceb> wut
2013-06-14T16:20:28 < Laurenceb> i thought he was talking about ethernet
2013-06-14T16:21:16 < dongs> he is
2013-06-14T16:21:19 < dongs> Laurenceb: attn http://vimeo.com/61047446
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2013-06-14T16:21:34 < dongs> im just sayin
2013-06-14T16:21:39 < dongs> you  buy a switch at dx, youll probly get a hub
2013-06-14T16:21:42 < Laurenceb> haha epic vid
2013-06-14T16:23:01 < Guest128> dongs, some of the cheap dx products are nice.. ( you can get them cheaper on ebay though )
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2013-06-14T16:23:25 < dongs> well since dx just resells taobao trash now yeah
2013-06-14T16:24:21 <+Steffanx> That wifi yagi is nice, and a wifi usb adapter, and you get "wifi cracking software" for free :P
2013-06-14T16:25:10 < karlp> why's that video camera on a swivel arm?
2013-06-14T16:25:12 < Laurenceb> haxor
2013-06-14T16:25:14 -!- MrM0bius [~Joey@194.176.111.160] has joined ##stm32
2013-06-14T16:25:19 < Laurenceb> for more epicness
2013-06-14T16:28:04 -!- MrMobius [~Joey@91.192.67.229] has quit [Ping timeout: 246 seconds]
2013-06-14T16:31:52 < inca> how can I probe what my ifconfig is with gdb?
2013-06-14T16:47:52 < inca> I can't seem to pass struct lwipthread_opts to the lwip start thread
2013-06-14T16:47:58 < inca> does anyone else do this successfully?
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2013-06-14T17:04:59 < dongs> hey fags
2013-06-14T17:05:04 < dongs> http://demo.partkeepr.org/ anyone used this?
2013-06-14T17:06:14 < dongs> neat/overkill/lame/y/n/m
2013-06-14T17:06:35 < Ranewen> a real man can take care of his inventory
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2013-06-14T17:10:47 < zyp> oh, I like the avg. price feature
2013-06-14T17:11:13 < Ranewen> so useful
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2013-06-14T17:12:36 < karlp> meh: A MySQL database (PostgreSQL support has been dropped, try at your own risk.
2013-06-14T17:12:58 < karlp> what on earth are they doing that's mysql only?
2013-06-14T17:17:47 <+Steffanx> writing their own queries
2013-06-14T17:17:50 <+Steffanx> there isn ot other reason
2013-06-14T17:17:56 <+Steffanx> *is no
2013-06-14T17:18:22 <+Steffanx> Or no abstraction, or whatever its called
2013-06-14T17:20:29 < dongs> heh
2013-06-14T17:20:36 < dongs> supposedly mysql supports stored procedures now
2013-06-14T17:23:48 <+Steffanx> like that is the most important feature of a db
2013-06-14T17:24:33 <+Steffanx> or does dongs do EVERYTHING is stored procedures?
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2013-06-14T17:29:27 <+Steffanx> *in
2013-06-14T17:32:11 -!- trepidaciousMBR [~trepidaci@176.62.208.227] has quit [Quit: trepidaciousMBR]
2013-06-14T17:42:58 < dongs> i might install this parts keepr shit
2013-06-14T17:53:18 < gxti> dropping postgres in favor of mysql? ultra failure
2013-06-14T17:56:50 < dongs> i dont give a fuck about politics.
2013-06-14T17:56:55 < dongs> all lunix databases suck dick anyway
2013-06-14T17:57:00 < dongs> mssql fucking rapes them all
2013-06-14T17:57:17 < Laurenceb> http://www.bbc.co.uk/news/uk-england-nottinghamshire-15108691
2013-06-14T18:00:35 < gxti> mssql is fine
2013-06-14T18:01:03 < gxti> postgres is also file
2013-06-14T18:01:04 < gxti> fine*
2013-06-14T18:01:43 < dongs> postgres has this small problem
2013-06-14T18:02:06 < dongs> its in the group of software that noone actually uses
2013-06-14T18:02:10 < dongs> like ruby, python, etc.
2013-06-14T18:02:19 < zyp> *yawn*
2013-06-14T18:02:21 < dongs> so to get that shit into a typical system requires work
2013-06-14T18:02:21 < gxti> hmm, i wonder what i'm getting paid for then
2013-06-14T18:02:26 < gxti> jerkin off probably
2013-06-14T18:02:27 < dongs> and./or installing extra shit
2013-06-14T18:02:40 < gxti> anyway
2013-06-14T18:02:48 < gxti> less boring software shit more stm32
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2013-06-14T18:09:52 < someone_r> hi guy... i am tring to understand the Interrupts... and i need some help
2013-06-14T18:10:05 < someone_r> just some basic and easy concepts
2013-06-14T18:10:40 -!- Ranewen [~Ranewen@87.252.130.240] has quit [Ping timeout: 268 seconds]
2013-06-14T18:10:42 < someone_r> I have a flashing LED9 on the discovery board
2013-06-14T18:11:26 < someone_r> and i would like that when i press the external button (pin0) it generate an interrupt and turn on led 8
2013-06-14T18:11:47 < someone_r> so very straight forward...
2013-06-14T18:12:06 < Lionhearted> someone_r, i can forward some links
2013-06-14T18:12:11 < dongs> someone_r: exti
2013-06-14T18:12:19 < someone_r> sure thanks
2013-06-14T18:13:03 < someone_r> but i have a basic question....the code that i have to write
2013-06-14T18:13:13 < someone_r> is it only in the main.c file?
2013-06-14T18:13:18 < dongs> ?
2013-06-14T18:13:23 < dongs> you can put interrupt vectors anywhere, yes
2013-06-14T18:13:32 < dongs> as long as they're named as wahtever is going into your vector table.
2013-06-14T18:13:42 < someone_r> ok
2013-06-14T18:14:06 < someone_r> because i saw some examples and they are very confusing... they create many other files...
2013-06-14T18:14:26 < Lionhearted> well i cant dig that links because my net is crap.. .. .. ..
2013-06-14T18:14:28 < Lionhearted> sorry
2013-06-14T18:14:40 < someone_r> no problems  thanks..
2013-06-14T18:14:47 < dongs> f4disco samplesa re ok
2013-06-14T18:14:49 < Lionhearted> il be here tomorrow
2013-06-14T18:15:10 < someone_r> i already have many links... noone of there is very usefull for easy understanding
2013-06-14T18:15:24 < someone_r> *them
2013-06-14T18:15:36 < Lionhearted> go in youtube and search:  miro samek
2013-06-14T18:15:57 < Lionhearted> most awsome tutorials for arm, even dongs could learn something
2013-06-14T18:16:55 < someone_r> cool.. thank you
2013-06-14T18:17:28 < PaulFertser> dongs: f4disco samples are "open source" so must be shit so you appear to suggest shit ewwww
2013-06-14T18:17:34 < someone_r> so the basic steps for udinf interrupts...
2013-06-14T18:17:51 < someone_r> 1. define and set the structure EXTO
2013-06-14T18:18:02 < someone_r> then?
2013-06-14T18:19:06 < someone_r> i mean.. i configure the PINs as EXTI
2013-06-14T18:19:41 < PaulFertser> someone_r: you'll need to configure EXTI to generate an interrupt on external event. Then you need to ask NVIC to set priorities and enable the corresponding EXTI interrupt. And you need to define a function to process that.
2013-06-14T18:19:56 < someone_r> ok
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2013-06-14T18:20:06 < someone_r> nothing go in the main?
2013-06-14T18:20:20 < someone_r> i mean in the while{1}
2013-06-14T18:20:28 < someone_r> cycle?
2013-06-14T18:21:06 < PaulFertser> someone_r: they're called interrupts for a reason, the cpu will pause that endless loop, run your interrupt handler, then if no other irqs are pending, return to where it was.
2013-06-14T18:21:07 < someone_r> the interrupt block automatically the execution of the while
2013-06-14T18:21:16 < someone_r> okok
2013-06-14T18:21:19 < someone_r> thanks
2013-06-14T18:21:22 < someone_r> now is more clear
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2013-06-14T18:23:22 < Lionhearted> someone_r, ehm... need to ask you few neewbie questions
2013-06-14T18:23:46 < PaulFertser> dongs: but tbh, ST's code is crap indeed. And the licence is crappy too, e.g. it doesn't allow to use it on any other non-stm32 systems.
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2013-06-14T18:24:40 < mtbg> right
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2013-06-14T18:26:23 < karlp> dongs: we dropped mssql at work for postgres recently,
2013-06-14T18:26:37 < karlp> and we add something like 50million rows per day
2013-06-14T18:27:10 < karlp> mssql worked fine, it was just the only windows server we had.
2013-06-14T18:27:18 < karlp> so we killllled it.
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2013-06-14T18:29:25 < someone_r> Lionhearted: go ahead... :)
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2013-06-14T18:42:59 < Laurenceb> https://www.sparkfun.com/
2013-06-14T18:43:08 < Laurenceb> "ust snap the board apart, sew it into the included felt, put the battery in and you’re ready to kill a few solid hours staring at blinking LEDs."
2013-06-14T18:43:14 < Ranewen> i got dc ed
2013-06-14T18:43:19 < Laurenceb> like any good tarduino user
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2013-06-14T19:08:21 < someone_r> what is the command for connecting the EXTI0 line 0 to PA0 pin?
2013-06-14T19:08:38 < someone_r> SYSCFG_EXTILineConfig(GPIO_Pin_0, EXTI_Line0);
2013-06-14T19:08:42 < someone_r> does not work
2013-06-14T19:08:43 < someone_r> :S
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2013-06-14T19:09:21 < someone_r>  SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0);
2013-06-14T19:09:27 < someone_r> o also tried this
2013-06-14T19:09:55 < someone_r>  undefined reference to `SYSCFG_EXTILineConfig'
2013-06-14T19:10:54 -!- Ranewen [~Ranewen@87.252.130.145] has quit [Ping timeout: 252 seconds]
2013-06-14T19:12:08 < PaulFertser_> someone_r: better read the library doxygen-generated reference. Or the library sources directly.
2013-06-14T19:13:24 < someone_r> actually i just found this instruction on a forum and i inserted in my code... and it doesnt work... (i was too optimistic...)
2013-06-14T19:13:54 < someone_r> i try to comment it and see if compiles...
2013-06-14T19:14:24 < someone_r> cool.. it worked whithout that instruction...
2013-06-14T19:14:32 < someone_r> i guess it was useless..
2013-06-14T19:15:16 < PaulFertser_> someone_r: most of the webforum posts are from the clueless people. Who can enjoy using webforums? Only those who has no experience at all in using anything decent.
2013-06-14T19:16:13 < someone_r> unfortunately i am one of them... three days ago i did not know the esistance of the STM32
2013-06-14T19:16:59 < someone_r> and now i have a strict deadline to deliver a project running on this MC.
2013-06-14T19:17:32 < someone_r> so everything i know on STM32 and programming in C i learned in the last two days...
2013-06-14T19:18:00 < PaulFertser_> someone_r: if you really want to understand how to use these uCs, then you'll have to read both the datasheet and the ST periph library source. No easy way round that.
2013-06-14T19:18:27 < PaulFertser_> imho
2013-06-14T19:19:46 < someone_r> i kind of did it the first day...
2013-06-14T19:25:13 < Thorn> you read it all in a day?
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2013-06-14T19:26:50 < someone_r> well as i said i have a strict deadline..
2013-06-14T19:27:05 < someone_r> so i am focusing on very important things
2013-06-14T19:27:38 < karlp> well, as interested as we all are in how far you get in a month, I don't think there's many of us who are prepared to actually _do_ it with you.
2013-06-14T19:28:02 < someone_r> i read the insiders guide to stm32
2013-06-14T19:28:20 < someone_r> http://www.hitex.com/fileadmin/pdf/insiders-guides/stm32/isg-stm32-v18d-scr.pdf
2013-06-14T19:28:29 < someone_r> wich is preatty good
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2013-06-14T19:28:54 < someone_r> sorry karlp... i understand that..
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2013-06-14T20:30:35 < zyp> jpa-, ever used interrupts in qemu?
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2013-06-14T20:39:18 < zyp> ah, found my problem, was a bug in my code, invoking undefined behavior
2013-06-14T20:39:35 < qyx_> strange
2013-06-14T20:39:44 < qyx_> if i create 3 listening sockets in lwip, everything works
2013-06-14T20:40:08 < zyp> hardware always did the right thing anyway, but qemu didn't
2013-06-14T20:40:21 < qyx_> as soon as i create fourth socket, all listening sockets starts to return RST after syn, synack, ack
2013-06-14T20:41:04 < zyp> qyx_, resource starvation?
2013-06-14T20:41:29 < zyp> sounds like it can't alloc a socket object for establishing a connection
2013-06-14T20:41:57 < qyx_> i investigated that, but cannot find cause
2013-06-14T20:42:06 < qyx_> i double checked lwip options
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2013-06-14T20:51:48 < trepidaciousMBR> qyx_: I think there are lwip options for everything like that - number of sockets, connections, etc?
2013-06-14T20:51:49 -!- dfletcher_ is now known as dfletcher
2013-06-14T20:58:00 < qyx_> trepidaciousMBR: i set them to higher values than i need, i am just enabling some debugging in lwip
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2013-06-14T21:12:21 < trepidaciousMBR> I've been trying to get lwip debuggin working too, nothing I do makes it print anything ;)
2013-06-14T21:13:49 < qyx_> i have the same problem
2013-06-14T21:16:05 < PaulFertser_> I've debugged lwip without any problem, just needed to read its debug macros carefully.
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2013-06-14T21:22:54 < trepidaciousMBR> qyx_: What do you have for LWIP_PLATFORM_DIAG define?
2013-06-14T21:24:44 < qyx_> chprintf from chibi, mmt
2013-06-14T21:25:09 < qyx_> finnally seems to compile after some fixes in lwip bindings for chibios
2013-06-14T21:25:28 < trepidaciousMBR> #define serial_printf(...) chprintf ((BaseSequentialStream *)&SD3, __VA_ARGS__)
2013-06-14T21:25:29 < trepidaciousMBR> #define LWIP_PLATFORM_DIAG(x) do {serial_printf x;} while(0)
2013-06-14T21:25:31 < trepidaciousMBR> Something like that?
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2013-06-14T21:29:51 < qyx_> yep
2013-06-14T21:29:59 < qyx_> but still prints nothing
2013-06-14T21:30:22 < trepidaciousMBR> Ah, I think I've got it going, although it just prints some stuff then port_halts :)
2013-06-14T21:30:41 < trepidaciousMBR> You need #define LWIP_DEBUG 1
2013-06-14T21:30:57 < trepidaciousMBR> Then I THINK you set #define LWIP_DBG_MIN_LEVEL              LWIP_DBG_LEVEL_ALL
2013-06-14T21:31:03 < trepidaciousMBR> Although that define really confuses me
2013-06-14T21:31:22 < trepidaciousMBR> Then enable some of the other ones. It really doesn't make a lot of sense to me and I can't find any decent docs
2013-06-14T21:31:53 < qyx_> i have both defined
2013-06-14T21:32:20 < qyx_> ah
2013-06-14T21:32:40 < qyx_> finally something on the output but i dont know how i managed to do it :S
2013-06-14T21:33:13 < trepidaciousMBR> Same here, I'm sure I had the exact same things defined before
2013-06-14T21:33:28 < trepidaciousMBR> Pplus enabling debug (without changing anything else) makes an assert in pbuf.c fail
2013-06-14T21:34:20 < trepidaciousMBR> I need a define for "debug output that indicates I should change a number somewhere"
2013-06-14T21:38:41 < zyp> jpa-, the lm3s machines in qemu seems to work fine for me, although I'm not using any of the peripherals yet, just the flash and ram memory regions
2013-06-14T21:39:36 < zyp> qemu even loads the stack pointer from the vector table after reset like it's supposed to, so I don't have to make a workaround for that
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2013-06-14T21:42:48 < karlp> a nice little blog post or short doc on this would be neat...
2013-06-14T21:43:14 < karlp> you canbasically just do qemu-system-arm -kernel blah.elf && gdb :1234 right?
2013-06-14T21:43:49 < zyp> with a few more flags, yes
2013-06-14T21:44:21 < zyp> and I'm running a pretty normal laks build without accessing any peripherals and a memory map with flash at 0 and ram at 0x20000000
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2013-06-14T21:46:06 < zyp> I'm planning to put some work into laks' thread scheduler
2013-06-14T21:47:17 < zyp> http://paste.jvnv.net/view/IxC5H <- so I wrote up some stuff for making intrusive linked lists, which would be neat for managing lists of threads (ready to run, sleeping, paused)
2013-06-14T21:47:40 < zyp> linked lists, without having to use any sort of dynamic memory
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2013-06-14T22:00:15 < trepidaciousMBR> qyx_: Hm, there were mem_malloc fails while it was struggling, increased MEM_SIZE quite a bit and it seems much happier
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2013-06-14T22:05:40 < trepidaciousMBR> Yup, much much happier
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2013-06-14T22:10:23 < qyx_> trepidaciousMBR: it was some memory issue, memp_netconn or something like that
2013-06-14T22:10:27 < qyx_> it is working now
2013-06-14T22:10:49 < trepidaciousMBR> Congrats :)
2013-06-14T22:11:13 < trepidaciousMBR> I think my problem was just mem_malloc running out of space, seems like that makes it reset connections...
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2013-06-14T22:15:21 < trepidaciousMBR> Hm, there are still some resets, but much better performance, I guess there is something else happening
2013-06-14T22:16:36 < Tectu> jpa-, some words about dynamic application loading:  http://forum.chibios.org/phpbb/viewtopic.php?f=3&t=1229
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2013-06-14T22:27:46 < PaulFertser_> Tectu: sounds a bit familiar, there was some silly "CircleOS" for portable stm32 demo boards, allowing to load additional apps.
2013-06-14T22:28:08 < Tectu> jup, I remember that
2013-06-14T22:32:02 < PaulFertser_> Those suckers had rlink which was limited to debug only first 32k of flash, and you had to use some crappy "ide". And using OpenOCD wasn't an option because rlink was connected via SWD and it's not supported.
2013-06-14T22:32:41 < Thorn> openocd supports swd now. I used it with st-link
2013-06-14T22:34:48 < PaulFertser_> Tectu: but not for rlink. It works with stlink because stlink is a high-level adapter, like BMP.
2013-06-14T22:35:13 < Thorn> bmp doesn't need openocd at all
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2013-06-14T22:36:40 < Tectu> PaulFertser_, I never used circleOS nor rlink
2013-06-14T22:37:48 < trepidaciousMBR> There's also texane stlink for swd
2013-06-14T22:37:55 < Tectu> texane >.<
2013-06-14T22:38:04 < trepidaciousMBR> ?
2013-06-14T22:38:04 < Tectu> most unstable software I've ever seen
2013-06-14T22:38:12 < trepidaciousMBR> Really? It's fine for me
2013-06-14T22:38:22 < PaulFertser_> Tectu: I played with it a little hoping to make students motivated (and as they're not allergic to proprietary crap, those limitations are not an issue). But alas.
2013-06-14T22:39:19 < Tectu> PaulFertser_, it's funny... In our embedded system departement there are 75% mac, 20% windows and 5% linux people
2013-06-14T22:39:24 < Tectu> all /trying/ to work together
2013-06-14T22:39:43 < Tectu> "hey, can I send you a PDF to print? There's no linux driver available for our new printer"
2013-06-14T22:39:47 < zyp> so 80% unix people? sounds fine
2013-06-14T22:40:01 < Tectu> "yes, let me boot my windows vm"
2013-06-14T22:40:13 < trepidaciousMBR> I'm on a Mac using virtual Linux and XP :)
2013-06-14T22:40:30 < Tectu> I'm on linux, using linux
2013-06-14T22:40:47 < PaulFertser_> Tectu: i'd bet windows people are the worst there, messing filenames (thanks to a case-insensitive fs).
2013-06-14T22:41:28 < Tectu> PaulFertser_, exactly
2013-06-14T22:41:38 < Tectu> linux <--> mac works fine if you know how to do it
2013-06-14T22:41:50 < Tectu> I just hate all those  __MACOSX things on my machines
2013-06-14T22:42:00 < PaulFertser_> Tectu: what VCS are you using there?
2013-06-14T22:42:05 < trepidaciousMBR> That is the worset thing about OSX
2013-06-14T22:42:13 < Tectu> PaulFertser_, VCS?
2013-06-14T22:42:19 < Thorn> does any fpga design / verification software support macs?
2013-06-14T22:42:21 < PaulFertser_> Tectu: version control system
2013-06-14T22:42:24 < zyp> PaulFertser_, OS X is also usually using case-insensitive HFS+
2013-06-14T22:42:38 < Tectu> PaulFertser_, git /AND/ svn -.-
2013-06-14T22:42:50 < trepidaciousMBR> zyp: Not unless a crazy person has been near it
2013-06-14T22:42:51 < PaulFertser_> zyp: i thought you can choose that as an option when you create it.
2013-06-14T22:42:54 < Tectu> PaulFertser_, the smart people use git, the others use svn complaining at the smart people and try to help
2013-06-14T22:43:10 < zyp> PaulFertser_, usually, as «by default»
2013-06-14T22:43:25 < zyp> trepidaciousMBR, the default is case-insensitive
2013-06-14T22:43:31 < Tectu> I am still not sure if I like the case sensitive FS solution anyway
2013-06-14T22:43:40 < Tectu> well, it forces people to use a sane style
2013-06-14T22:43:45 < zyp> I don't really mind
2013-06-14T22:43:48 < Tectu> not that we end up with some capital and some other files
2013-06-14T22:44:06 < zyp> case-insensitive just means that you can't have similarly named files where only case is the difference
2013-06-14T22:44:12 < zyp> which is pretty sane anyway, IMO
2013-06-14T22:45:11 < Tectu> zyp, yes. Ever saw    SomeFileName.foo   vs.  some\ file\ name.foo   vs.   somefilename.foo   vs. someFileName.foo   vs.   some_file_Name.foo  aaaand my favorite:    some_file-name.foo
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2013-06-14T22:51:09 < Tectu> also README vs. readmee
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2013-06-14T23:06:48 < zyp> dongs, got any upcoming 2layer panels? I'm planning on doing a couple of f3 based designs next week
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2013-06-14T23:09:44 < Tectu> something small, maybe
2013-06-14T23:10:00 < Tectu> ah, I thought you want a community pool - sorry
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2013-06-14T23:22:12 < zyp> nah, I just like the dongpcb quality, beats any other fab I've used
2013-06-14T23:22:23 < Tectu> how about pricing?
2013-06-14T23:23:35 < zyp> I wrote some code in exchange for some pcbs once :p
2013-06-14T23:24:11 < Tectu> hrhr
2013-06-14T23:24:48 < Tectu> I usually go for leit-on.de or euro-circuits
2013-06-14T23:25:44 < zyp> how are they on price?
2013-06-14T23:26:01 < Tectu> leit-on.de is standard, I think
2013-06-14T23:26:06 < Tectu> the quality was always very awesome
2013-06-14T23:26:15 < Tectu> eurocircuits is quite expensive and they just deliver to companies anyway
2013-06-14T23:26:20 < zyp> I might need some decent fab if/when I start doing boards for work
2013-06-14T23:26:22 < Tectu> (which is no issue here)
2013-06-14T23:26:30 < Tectu> I can totally recommend leit-on.de
2013-06-14T23:26:37 < Tectu> their support is as awesome as their PCB quality
2013-06-14T23:27:02 < zyp> hmm, which country were you in? .de?
2013-06-14T23:27:38 < Tectu> .CH
2013-06-14T23:27:42 < Tectu> .ch*
2013-06-14T23:27:47 < Tectu> but they are in .de
2013-06-14T23:27:58 < Tectu> when they shit, they always declared it as a gift so no taxes at customs :D
2013-06-14T23:28:46 < zyp> «shit»
2013-06-14T23:28:58 < Thorn> is shit normally taxed?
2013-06-14T23:29:28 < zyp> heh
2013-06-14T23:29:36 < zyp> silk not included, rather expensive to add
2013-06-14T23:29:41 < Tectu> ship* -.-
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2013-06-14T23:36:00 < Tectu> zyp, you should watch out for eurocircuits if you want to play in the professional business
2013-06-14T23:36:11 < Tectu> because they are quite awesome with managing deadlines etc
2013-06-14T23:36:18 < zyp> watch out?
2013-06-14T23:36:28 < Tectu> and they provide single prototype pieces somehow quite cheap compared to others
2013-06-14T23:36:33 < Tectu> watch out -> take a look
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2013-06-14T23:44:33 < jpa-> zyp: if you have a nice example about lm3s + qemu, i would be interested
2013-06-14T23:44:46 < jpa-> zyp: if systick works, i can replace my gdb step crap :)
2013-06-14T23:44:58 < zyp> I don't have systick yet
2013-06-14T23:47:27 < zyp> http://paste.jvnv.net/view/jCxjP <- I currently just have this, which when executed does this: http://paste.jvnv.net/view/u1aLJ
2013-06-14T23:48:25 < zyp> and apart from a linker script placing flash at 0 and ram at 0x20000000 I don't do anything special while building
2013-06-14T23:48:26 < jpa-> zyp: btw, have you thought about making your Thread class compatible with c++11 threads?
2013-06-14T23:49:13 < zyp> hmm, I haven't looked into the c++11 thread API
2013-06-14T23:49:31 < jpa-> it's quite simple
2013-06-14T23:50:04 < zyp> if it doesn't rely on dynamic memory, I might
2013-06-14T23:50:56 < jpa-> hmm yeah, that is a good point
2013-06-14T23:51:37 < jpa-> the argument handling might need dynamic memory, not sure
2013-06-14T23:52:05 < jpa-> though in embedded, maybe the overload that passes arguments to the thread is not strictly necessary
2013-06-14T23:53:29 < zyp> no, that part is easy enough
2013-06-14T23:53:37 < zyp> you just have to push them to the initial stack
2013-06-14T23:54:22 < jpa-> as long as you don't need any random c++ object as copy-constructed argument
2013-06-14T23:54:38 < zyp> true
2013-06-14T23:54:50 < jpa-> hmm.. though with that recursive template thingy it might not be too difficult either
2013-06-14T23:55:17 < zyp> but there is another problem; allocating stack
2013-06-14T23:56:14 < jpa-> yeah, would have to make that a template arg
2013-06-14T23:56:18 < jpa-> could have a default value though
2013-06-14T23:56:22 < zyp> anyway, the thread-api is probably better implemented as a wrapper on top of a platform specific thread API
2013-06-14T23:56:36 < jpa-> true
2013-06-14T23:56:46 < zyp> so I don't think I'll worry about that
2013-06-14T23:57:12 < zyp> I'm a bit curious about how thread_local is implemented, however
2013-06-14T23:57:15 < zyp> i.e. TLS
2013-06-14T23:58:56 < zyp> is the layout of the TLS area the same for every single thread?
2013-06-14T23:59:37 < zyp> which means that for every single TLS allocation, that much memory is required for every single thread, regardless of that object being used in a thread or not?
--- Day changed Sat Jun 15 2013
2013-06-15T00:00:57 < Thorn> http://www.akkadia.org/drepper/tls.pdf could be useful
2013-06-15T00:01:09 < zyp> just started reading it
2013-06-15T00:01:43 < Thorn> 79 pages lol
2013-06-15T00:02:20 < zyp> like that matters
2013-06-15T00:02:58 < zyp> it's easier to skim through too much information than trying to understand something from too little information
2013-06-15T00:03:25 < jpa-> maybe the accesses are automatically converted to tss_get and tss_set calls?
2013-06-15T00:03:50 < jpa-> which store void*; so that probably the actual object is allocated in heap
2013-06-15T00:04:23 < jpa-> http://en.cppreference.com/w/c/thread/tss_create http://en.cppreference.com/w/c/thread/tss_set
2013-06-15T00:05:36 < jpa-> though because the thread local storage is global/static in scope, there are probably very fun rules on when and in which order the objects are constructed
2013-06-15T00:05:52 < jpa-> and due to those rules, it probably has to construct all objects even if they are never accessed
2013-06-15T00:07:27 < jpa-> maybe if you wanted to avoid unnecessary memory usage, you would have to do   thread_local MyObject *foo;  and then allocate it only in the threads in which it is needed
2013-06-15T00:09:38 < zyp> hmm, my gcc doesn't seem to support the thread_local keyword yet
2013-06-15T00:10:09 < zyp> __thread works, however, and seems to pull inn some newlib parts, which complains about missing syscalls
2013-06-15T00:11:04 < zyp> it emits calls to __emutls_get_address
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2013-06-15T00:24:53 < Laurenceb_> http://hackaday.com/2013/06/14/hackit-sony-invites-you-to-hack-its-smartwatch-firmware/
2013-06-15T00:24:56 < Laurenceb_> stm32 :P
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2013-06-15T00:28:57 < zyp> oh, nice
2013-06-15T00:29:19 < zyp> I have one of the old ones, that they called «liveview»
2013-06-15T00:30:13 <+Steffanx> its nice to some stm32s in real products :)
2013-06-15T00:30:21 <+Steffanx> products from the 'larger' companies
2013-06-15T00:30:25 < zyp> oh f2
2013-06-15T00:30:32 < zyp> first time I've seen it used anywhere :p
2013-06-15T00:31:11 < Thorn> The vibrator is controlled by GPIO PB8.
2013-06-15T00:31:18 < Laurenceb_> we were going to use it at work
2013-06-15T00:31:31 < Laurenceb_> but nothing happened as ....
2013-06-15T00:31:36 < Laurenceb_> zzzz
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2013-06-15T00:33:02 < Laurenceb_> looks like no example firmwarE?
2013-06-15T00:33:20 < Laurenceb_> interfacing with android over bluetooth could be tricky
2013-06-15T00:33:32 < Laurenceb_> if you want to bother with that...
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2013-06-15T00:35:46 < Laurenceb_> Tectu could put chibios/gfx on it
2013-06-15T00:36:06 < zyp> hmm, the TLS model described in that pdf is different from what my gcc is emitting
2013-06-15T00:36:54 < Tectu> Laurenceb_, totally
2013-06-15T00:37:08 < Laurenceb_> sony seem to like stm32
2013-06-15T00:37:43 < Tectu> there's actually an stm32 in there?
2013-06-15T00:37:51  * Tectu is reading the ext
2013-06-15T00:37:54 < Tectu> text*
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2013-06-15T01:20:04 < trepidaciousMBR> Seems like it wouldn't be too hard to duplicate that watch as an open source project
2013-06-15T01:20:15 < trepidaciousMBR> I had a look at one of those, it's kind of cool but a bit too expensive
2013-06-15T01:20:51 < ds2> indeed
2013-06-15T01:21:06 < ds2> i am mostly doing that except I want uCLinux on it
2013-06-15T01:21:07 < Thorn> is bluetooth easy to implement?
2013-06-15T01:21:20 < ds2> bluez
2013-06-15T01:21:26 < ds2> or use a chip with an onboard stack
2013-06-15T01:21:40 < trepidaciousMBR> It might just be me, but I like NOT having uClinux ;)
2013-06-15T01:21:56 < ds2> same board works w/uCLinux
2013-06-15T01:22:12 < ds2> probally want to skip out on the extra ram and use a cheaper STM32
2013-06-15T01:22:48 < Laurenceb_> http://www.engadget.com/2012/04/19/sony-smartwatch-tear-down-dissection-splayed/
2013-06-15T01:22:52 < Thorn> bluez is for linux
2013-06-15T01:23:29 < ds2> you can get chips with the BT stack right on there
2013-06-15T01:23:33 < ds2> all you need is a UART
2013-06-15T01:24:17 < Thorn> no NDA crap?
2013-06-15T01:24:25 < ds2> nope
2013-06-15T01:24:28 < ds2> it uses AT commands
2013-06-15T01:24:32 < Thorn> that's good
2013-06-15T01:24:54 < ds2> but BT draws too much power
2013-06-15T01:25:24 < zyp> jpa-, oh, there is actually a working systick
2013-06-15T01:25:41 < Laurenceb_> like the antenni
2013-06-15T01:27:11 < Laurenceb_> http://www.wirelessgoodness.com/wp-content/gallery/liveview-touch/2012-02-27_114615.jpg
2013-06-15T01:27:18 < Laurenceb_> looks like bga F2
2013-06-15T01:27:24 < Laurenceb_> and ambient light sensor
2013-06-15T01:28:29 < Laurenceb_> http://www.ti.com/product/tps65720 <- and that, nice
2013-06-15T01:37:27 < zyp> jpa-, http://paste.jvnv.net/view/spDvB
2013-06-15T01:43:53 < trepidaciousMBR> Wow, WLCSP64+2 package, looks like about 4x4mm
2013-06-15T01:43:59 < trepidaciousMBR> That's a small chip
2013-06-15T01:44:20 < zyp> 8x8, 0.5mm pitch
2013-06-15T01:44:26 < zyp> so yeah, 4x4mm
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2013-06-15T01:51:03 < Tectu> so I'm about to begin the routing of another PCB. I never made anything with more than two layers so far
2013-06-15T01:51:15 < Tectu> in this project, I don't know yet if two will be enough or if I need four
2013-06-15T01:51:27 < Tectu> should I just begin with four and add two additional afterwards or how do you guys handle this?
2013-06-15T01:52:07 < qyx_> dongs would tell you that proper pcb has at least 4 layers
2013-06-15T01:52:09 < zyp> ideally you should decide number of layers before you start
2013-06-15T01:52:26 < ds2> why do you think you might need more layers?
2013-06-15T01:52:35 < ds2> SI? Routing?
2013-06-15T01:53:15 < Tectu> okay, might you guys mind telling me how I should "set up" my layers config?
2013-06-15T01:53:24 < Tectu> as in top VCC, bot GND, mid two signals?
2013-06-15T01:53:45 < zyp> usual is gnd and vcc on inner
2013-06-15T01:53:53 < Laurenceb_> <qyx_> dongs would tell you that proper pcb runs windows
2013-06-15T01:54:07 < zyp> I prefer having gnd closest to component layer
2013-06-15T01:54:35 < zyp> i.e. signals, vcc, gnd, signals+components
2013-06-15T01:54:50 < Tectu> here I will end up with components on both sides for sure
2013-06-15T01:54:58 < Laurenceb_> what you making?
2013-06-15T01:55:08 < zyp> that's what I also was about to ask
2013-06-15T01:55:11 < Laurenceb_> <dongs> does it run windows RT  ?
2013-06-15T01:55:15 < Tectu> the first all-in-one prototype of my signal generator
2013-06-15T01:55:48 < zyp> and you are limited on board area?
2013-06-15T01:55:49 < Thorn> what ICs / packages are you using? what signals? does it need to pass certification?
2013-06-15T01:55:57 < Tectu> zyp, yes
2013-06-15T01:56:05 < Tectu> zyp, and does it matter that I place components on both sides?
2013-06-15T01:56:07 < ds2> what is your concern that is driving you to 4 layers?
2013-06-15T01:56:27 < zyp> Tectu, just more work to assemble
2013-06-15T01:56:41 < Tectu> there are mainly LQFP and SOIC-8. Three QFN and a load of 0603
2013-06-15T01:56:55 < Tectu> it contains some low RF (< 50MHz)
2013-06-15T01:57:06 < Tectu> it does not need to pass any tests
2013-06-15T01:57:15 < zyp> Tectu, and how much area do you have?
2013-06-15T01:57:26 < Tectu> zyp 135 by 85mm
2013-06-15T01:57:36 < qyx_> what
2013-06-15T01:57:40 < zyp> that's huge
2013-06-15T01:57:43 < Tectu> but there's also stuff like microSD card an stuf
2013-06-15T01:57:45 < Tectu> stuff*
2013-06-15T01:57:50 < zyp> how many qfp/soic?
2013-06-15T01:57:56 < Tectu> I don't know... I never ever made a PCB with a pre-limited area :D
2013-06-15T01:58:02 < Tectu> so I never had to worry about making stuff small
2013-06-15T01:58:17 < qyx_> 135x85 is really huge pcb
2013-06-15T01:58:21 < Tectu> mm
2013-06-15T01:58:23 < Tectu> yes, it is
2013-06-15T01:58:36 < Tectu> but I have to place components on both sides anyway (In order to archive smallest possible signal lengths)
2013-06-15T01:58:47 < Tectu> ah right, there's some 300MHz digital stuff
2013-06-15T01:59:08 < zyp> I managed to fit five QFNs, a microsd socket and a 2.4GHz antenna in 30x40mm or so
2013-06-15T01:59:14 < zyp> you have over 8 times as much area :p
2013-06-15T01:59:34 < Tectu> huh
2013-06-15T01:59:41 < Tectu> okay
2013-06-15T01:59:50 < Tectu> I am usually the schematics, not the layout guy
2013-06-15T02:00:23 < zyp> http://bin.jvnv.net/f/mdVxb.JPG <- I even had some mm2 to spare :)
2013-06-15T02:00:38 < zyp> (next to the unpopulated QFN)
2013-06-15T02:00:41 < Tectu> neat
2013-06-15T02:00:46 < Tectu> never saw a zig-zag antenna
2013-06-15T02:00:49 < Tectu> always just square waves
2013-06-15T02:01:26 < zyp> it's some patented stuff that my rf prof at uni designed
2013-06-15T02:02:06 < Tectu> huh
2013-06-15T02:02:29 < zyp> I did the board for my graduation project, so I just borrowed the design
2013-06-15T02:02:47 < zyp> seemed to work pretty well
2013-06-15T02:03:07 < Tectu> interesting
2013-06-15T02:03:10 < zyp> I mean the antenna design
2013-06-15T02:03:22 < Tectu> so, There's a tripple channel DAC next to my FPGA
2013-06-15T02:03:26 < Tectu> the DAC is a TQFP-48
2013-06-15T02:03:41 < Tectu> it has one side per bus
2013-06-15T02:03:44 < Tectu> so three sides are just digital inputs
2013-06-15T02:03:49 < qyx_> zyp: hm, seems like a modified F
2013-06-15T02:04:03 < Tectu> when I place it on the oposite site of the FPGA, I can "straight route" it
2013-06-15T02:04:04 < zyp> qyx_, yep
2013-06-15T02:04:20 < Tectu> when I place it next to the FPGA on the same layer, I have longer and not the same length tracks
2013-06-15T02:04:35 < zyp> qyx_, it's balanced in a way to avoid detuning from proximity to human bodies
2013-06-15T02:05:01 < qyx_> nice
2013-06-15T02:05:07 < qyx_> whats the lga14 on the left?
2013-06-15T02:05:09 < qyx_> accelerometer?
2013-06-15T02:05:23 < zyp> yep
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2013-06-15T02:05:43 < zyp> ah, antenna patent is here: http://www.faqs.org/patents/app/20100231471
2013-06-15T02:06:47 < qyx_> its just 2 layers?
2013-06-15T02:07:02 < zyp> no, 4
2013-06-15T02:07:18 < zyp> signals on inner, planes/components on outer
2013-06-15T02:07:50 < Tectu> zyp, idea about my FPGA->DAC problem?
2013-06-15T02:08:11 < zyp> http://bin.jvnv.net/f/yuaYu.png
2013-06-15T02:08:30 < zyp> Tectu, do the tracks have to be same length?
2013-06-15T02:09:27 < Tectu> zyp, well, the signal run time (or how do you call this?) difference should not be longer than the clock, eh
2013-06-15T02:09:38 < zyp> since you say FPGA, I assume you're free to pinswap most of the signal
2013-06-15T02:09:54 < Tectu> yes
2013-06-15T02:10:10 < Tectu> now I ask you for experiences for a sane "design"
2013-06-15T02:10:21 < Tectu> would you go top->bot or top->top?
2013-06-15T02:10:34 < zyp> so you could just run the closest adc pin to the furthest fpga pin
2013-06-15T02:10:59 < Tectu> how does a via modify the signal?
2013-06-15T02:11:04 < zyp> put both parts on top, break the signals out from the chips and to a via, and route them on bottom
2013-06-15T02:11:27 < zyp> modify? it adds the board thickness or so to the trace length
2013-06-15T02:12:51 < Tectu> when you have a fast signal and move it through a 90° corner on the same layer, you get reflections. that's why you use 45° or even circles there
2013-06-15T02:12:56 < Tectu> now, the via is kinda 90°, no?
2013-06-15T02:13:25 < gxti> no offense Tectu but if you don't know how to use 4 layers you definitely do not know about right angles in traces :p
2013-06-15T02:14:21 < gxti> right angles do not matter until ghz. but don't do it anyway because it's ugly.
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2013-06-15T02:15:01 < Tectu> gxti, I am sorry that I never had to design such a PCB myself so far
2013-06-15T02:15:09 < Tectu> and therefore ask for help/experience
2013-06-15T02:16:20 < gxti> you can play victim if it makes you feel better but that's not what i'm saying
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2013-06-15T02:16:34 < Thorn> http://electronics.stackexchange.com/questions/72790/i-need-to-compete-against-atts-uverse-digital-receiver-boxes
2013-06-15T02:16:49 < Tectu> gxti, this is definitely going to far :P
2013-06-15T02:17:18 < zyp> Tectu, I wouldn't worry about it
2013-06-15T02:17:34 < qyx_> you should worry about much simpler things
2013-06-15T02:17:56 < qyx_> unrelated, today i spend 3 hours finding out why my max3232 isn't working
2013-06-15T02:18:07 < qyx_> until realizing that i simply forgot to connect its gnd
2013-06-15T02:18:14 < qyx_> *spent
2013-06-15T02:18:19 < zyp> http://bin.jvnv.net/f/eaiEM.png <- I bet the sdram chip on this board is faster than your adc, and I didn't worry too much about it
2013-06-15T02:18:39 < Tectu> zyp, I see. Thanks
2013-06-15T02:19:11 < zyp> I still haven't gotten around to writing the code to use it, so I can't actually prove it works like that tough :p
2013-06-15T02:19:25 < Thorn> same about RMII which goes through a pin header I presume
2013-06-15T02:19:32 < qyx_> i was about to ask that zyp
2013-06-15T02:19:55 < qyx_> i am curious if it works
2013-06-15T02:20:45 < zyp> last time I dicked around with it I got tired because the IO mapping stuff on LPC is a hassle
2013-06-15T02:30:28 < dongs> zyp: sure, 2l is very often. what are you making?
2013-06-15T02:30:32 < dongs> anything thats useful to me? :P
2013-06-15T02:31:05 < zyp> a couple of HID boards
2013-06-15T02:32:45 < dongs> todowat
2013-06-15T02:33:06 < gxti> to I with Hs
2013-06-15T02:33:10 < zyp> was thinking about a generic one with a couple of whole port arrays so I just can read IDR for the whole port, then a drop in replacement for some game controller
2013-06-15T02:33:23 < dongs> ah
2013-06-15T02:34:21 < zyp> was thinking about using the F3 comparators for treating phototransistor signals from a quad encoder, internally routed to a timer in quad encoder mode
2013-06-15T02:34:24 < Tectu> zyp, what's this board?  http://bin.jvnv.net/f/eaiEM.png
2013-06-15T02:34:39 < zyp> BGA challenge, mostly
2013-06-15T02:35:03 < zyp> http://bin.jvnv.net/f/Mv7rw.JPG <- turned out to be BGA success
2013-06-15T02:35:09 < zyp> and boring to code for
2013-06-15T02:35:11 < Tectu> what are the "common" design rules for track widths, clearance and via sizes?
2013-06-15T02:35:25 < zyp> depends on your fab
2013-06-15T02:35:43 < Tectu> aren't there values that everyone can do? :D
2013-06-15T02:36:03 < Thorn> 1mm/1mm/2mm
2013-06-15T02:36:17 < Tectu> -.-
2013-06-15T02:36:21 < zyp> just look up seeed rules, that's probably around the worst/cheapest you get :p
2013-06-15T02:36:22 < qyx_> basically i haven't found any fab that can't do 0.2mm/0.2mm and min drill 0.4mm
2013-06-15T02:36:27 < dongs> over 9000
2013-06-15T02:36:35 < Tectu> zyp, that's what I was asking for, thanks :)
2013-06-15T02:36:41 < Tectu> thanks qyx_ !
2013-06-15T02:37:25 < qyx_> probably if i wanted too much i would find something worse
2013-06-15T02:39:07 < zyp> dongs, oh, and later on I might be interested in doing some NFC shit
2013-06-15T02:39:33 < zyp> http://www.ti.com/tool/trf7960atb <- ordered this yesterday, so I'm gonna prototype some software first to see how horrible the chip is to work with
2013-06-15T02:40:00 < Tectu> how comes that the seeed studio specs say that the outer tracks can have a smaller width than the inner ones? is that common?
2013-06-15T02:40:31 < gxti> sure, you don't need thin tracks on the inside
2013-06-15T02:40:47 < gxti> could even be thicker copper
2013-06-15T02:40:58 < gxti> although usually it's thinner, not thicker
2013-06-15T02:41:16 < zyp> it is thinner
2013-06-15T02:41:32 < Tectu> didn't I say it that way?
2013-06-15T02:41:45 < gxti> i mean the thickness of the copper layer
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2013-06-15T02:41:49 < gxti> not the track width
2013-06-15T02:42:02 < gxti> but now i'm just confusing you
2013-06-15T02:42:24 < zyp> the inner copper layer is half the thickness, so it's probably easier to etch away, thus requiring wider traces :p
2013-06-15T02:42:34 < gxti> they do it because they can make it cheaper and you don't really need it on the inner layers
2013-06-15T02:42:47 < zyp> a bit weird though, thicker layer gives more surface for etching from the side
2013-06-15T02:42:52 < zyp> but whatever
2013-06-15T02:42:52 < Tectu> oh
2013-06-15T02:42:59 < Tectu> I didn't know that the inner layers are thinner
2013-06-15T02:43:01 < Tectu> how comes?
2013-06-15T02:43:09 < gxti> dunno
2013-06-15T02:43:17 < gxti> well, mostly it's in wide planes not thin tracks
2013-06-15T02:43:18 < Thorn> thinner copper usually means smaller tolerances
2013-06-15T02:43:20 < gxti> so you don't need it as thick
2013-06-15T02:43:21 < Tectu> you said inner layers are most often power suplly?
2013-06-15T02:43:23 < Tectu> supply*
2013-06-15T02:43:33 < gxti> yes
2013-06-15T02:43:33 < zyp> Tectu, they are usually planes, so they are so wide they don't need to be thick
2013-06-15T02:43:39 < Tectu> I see
2013-06-15T02:43:59 < gxti> zyp: Thorn is correct, thinner layers are easier to etch finely
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2013-06-15T02:44:09 < gxti> if you look at fabs that offer really thick copper the tolerances are worse
2013-06-15T02:44:14 < Tectu> so when routing, I don't care about the inner two layers and simply place a via wherever I need VCC/GND and add those two planes at the end?
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2013-06-15T02:44:17 < dongs> zyp: lol, is that a boosterpack for TI LancuhPad
2013-06-15T02:44:19 < zyp> gxti, I know, I just said that
2013-06-15T02:44:26 < Thorn> copper is electroplated onto outer layers when vias are plated, therefore they're thicker
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2013-06-15T02:44:37 < zyp> dongs, sort of, won't fit the stellaris one
2013-06-15T02:44:39 < zyp> but doesn't matter
2013-06-15T02:44:47 < zyp> I'll just hook up some wires for power and spi
2013-06-15T02:45:18 < gxti> zyp: about etching? you originally said the opposite
2013-06-15T02:45:24 < zyp> chip seems nice and is available on digikey, unlike all other nice nfc chips
2013-06-15T02:45:28 < gxti> whatever
2013-06-15T02:45:34 < zyp> gxti, 01:42:47 < zyp> a bit weird though, thicker layer gives more surface for etching from the side
2013-06-15T02:45:56 < zyp> (and thus would eat into the track faster)
2013-06-15T02:52:36 < dongs> yeah, 0.5oz copper can have thinner tracks than 1oz etc.
2013-06-15T02:52:47 < dongs> i think our 0.5oz shit can do 4/4 mil
2013-06-15T02:54:58 < Tectu> so let's say I have both, QFN chips on both sides
2013-06-15T02:54:59 < dongs>  5477724 2013-05-03 20:01 partkeepr-0.1.9/setup/extjs/ext-all-debug-w-comments.js 2942873 2013-05-03 20:01 partkeepr-0.1.9/setup/extjs/ext-all-debug.js 1289687 2013-05-03 20:00 partkeepr-0.1.9/setup/extjs/ext-all.js
2013-06-15T02:55:03 < dongs> holy shit
2013-06-15T02:55:04 < dongs> 5megs of javascript
2013-06-15T02:55:09 < Tectu> how does one solder the second without the first flying off?
2013-06-15T02:55:23 < gxti> dongs: debug version...
2013-06-15T02:55:30 < gxti> still ridic
2013-06-15T02:56:24 < Thorn> the source code for that thing is easier to read than the documentation btw
2013-06-15T02:56:54 < gxti> this is the future, megabytes upon megabytes of shitty code in a shitty language running in an interpreted, traced, just-in-time compiled VM in some bizarre frame called a 'browser' that runs untrusted code from the internet
2013-06-15T02:57:14 < gxti> yay.
2013-06-15T02:57:25 < dongs> thats gotta be autogenerated shit
2013-06-15T02:57:34 < dongs> there's also a dir with like 200k-sized .css files, like 10 of htem
2013-06-15T02:57:46 < Thorn> in a sandbox which shileds you from your own clipboard
2013-06-15T02:58:19 < dongs> Thorn: whjat thing
2013-06-15T02:58:33 < Thorn> extjs
2013-06-15T02:58:43 < dongs> oh, didtn know anyone would actually be familiar with that shit.
2013-06-15T02:58:48 < dongs> is it as nasty as the size would imply?
2013-06-15T02:58:50 < Thorn> I used it for a project ~3 years ago
2013-06-15T02:59:05 < dongs> im considering installing http://demo.partkeepr.org/ but I duno how useful thats gonna be
2013-06-15T02:59:18 < Thorn> it still takes 20 seconds to load, even with latest browsers and jit js engines
2013-06-15T02:59:23 < dongs> rolf
2013-06-15T02:59:41 < dongs> well, yeah, i can imagine how long it takes to load 1.2megs of js
2013-06-15T02:59:52 < Thorn> looks real cool though
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2013-06-15T03:00:20 < gxti> it's worse than i thought
2013-06-15T03:00:49 < gxti> "industry's most powerful desktop application development platform"
2013-06-15T03:00:51 < gxti> loooooooooooooool
2013-06-15T03:00:56 < dongs> haha
2013-06-15T03:01:15 < dongs> enterprise ready?
2013-06-15T03:01:27 < gxti> cross platform, runs shitty everywhere
2013-06-15T03:01:48 < Thorn> I think my JS code was about 250Kb on top of that
2013-06-15T03:02:34 < Thorn> some poor souls still use it
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2013-06-15T03:05:08 < Tectu> ah, so there actually are 78xx and 79xx devices in DPAK, nice
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2013-06-15T03:13:15 < karlp> zyp: will that rfid board plug directly into the stellaris launchpad? do I read that right?
2013-06-15T03:13:33 < zyp> 01:44:37 < zyp> dongs, sort of, won't fit the stellaris one
2013-06-15T03:13:35 < zyp> so no
2013-06-15T03:13:45 < zyp> it does fit some other launchpads or something though
2013-06-15T03:13:59 < zyp> I think the headers on it are 2mm pitch
2013-06-15T03:15:04 < karlp> sorry, you guys were chatty tonight
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2013-06-15T03:16:56 < dongs> you need to get the matching elite launchpad
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2013-06-15T03:17:28 < dongs> is that NFC shit stellaris or something
2013-06-15T03:17:33 < dongs> therefore utterly useless
2013-06-15T03:18:30 < Tectu> can anyone recommend a sane 3.3V LDO in a small SMD package with at least 100mA?
2013-06-15T03:18:39 < dongs> LP2992
2013-06-15T03:18:46 < dongs> and any of 1000 of its clones
2013-06-15T03:18:57 < dongs> wiht samed pinout
2013-06-15T03:19:16 < Tectu> perfect, thank you!
2013-06-15T03:19:30 < dongs> im talkin about SOT23 version, not QFN or wahtever is on site pic
2013-06-15T03:20:11 < Tectu> yeah, me too
2013-06-15T03:20:18 < Tectu> SOT23 is what I was searching for
2013-06-15T03:27:33 < Tectu> how comes I cannot find any pinning information in the provided datasheet
2013-06-15T03:28:22 < zyp> dongs, no, the NFC board is just the NFC chip itself
2013-06-15T03:28:41 < zyp> it'll mate with some msp430 or stellaris devboards however, but I'm not interested in that
2013-06-15T03:28:52 < dongs> Tectu: are you fucking blind, pin 2
2013-06-15T03:28:59 < dongs> "connection diagram'
2013-06-15T03:29:04 < dongs> er pin2 = page2
2013-06-15T03:29:09 < zyp> I'll just hook up SPI, prototype shit, then do a board of my own
2013-06-15T03:29:28 < Tectu> dongs, here is only a page1, that's my problem
2013-06-15T03:29:37 < dongs> http://www.ti.com/lit/ds/symlink/lp2992.pdf ...
2013-06-15T03:30:12 < Tectu> aah... fail
2013-06-15T03:30:18 < Tectu> I took a look at that for 10 hours now
2013-06-15T03:30:21 < dongs> stop downloading shit from datasheetcatalog.com
2013-06-15T03:30:35 < Tectu> but I reinstalled my system before and the crap PDF reader I use has per default no "scroll over page" feature
2013-06-15T03:30:45 < dongs> uh huh
2013-06-15T03:30:45 < Tectu> therefore it just scrolled to the bottom of sheet on
2013-06-15T03:30:48 < Tectu> one*
2013-06-15T03:30:55 < dongs> acrobat > *
2013-06-15T03:31:09 < gxti> no comment
2013-06-15T03:31:30 < dongs> nothing comes close to acrobat in awesome
2013-06-15T03:31:42 < dongs> at least on a real OS. no idea what you lunix turdballs use.
2013-06-15T03:32:28 < gxti> yes acrobat definitely instills a sense in awe that something so morbidly obese doesn't collapse into a black hole and obliterate the building
2013-06-15T03:32:32 < Thorn> I once patched a linux pdf reader to ignore protection in PDFs
2013-06-15T03:32:48 < Thorn> try that with acrobat
2013-06-15T03:32:51 < dongs> ^ typical activity of lunix fgts
2013-06-15T03:32:59 < dongs> i dont need to, I dont need to break teh law to view pdfs
2013-06-15T03:33:52 < gxti> not that kind of protection, just the shitty "can't print" or "can't save" ones that are just bits in the header
2013-06-15T03:34:00 < gxti> although i find it hilarious that they bothered implementing them at all
2013-06-15T03:34:19 < Thorn> "can't copy to clipboard" is the worst
2013-06-15T03:34:42 < gxti> i thought all PDFs had that, because when you try to select it does stupid shit because PDF is really just a glorified printer language not a document
2013-06-15T03:35:12 < dongs> thats only if pdf is generated from opensauce tools
2013-06-15T03:35:22 < Thorn> you can select and copy text if it's not disabled, but results may vary
2013-06-15T03:35:28 < gxti> no, just with cheap closedsauce tools
2013-06-15T03:35:34 < gxti> i'm sure adobe's own stuff is fine
2013-06-15T03:35:39 < dongs> yeah.
2013-06-15T03:35:55 < dongs> ive seen PDFs made with opensoers that when you copy text, clipboard just contains garbage
2013-06-15T03:36:03 < dongs> because t hey didnt bother making character map properly
2013-06-15T03:36:19 < Thorn> that probably has to do with font encodings
2013-06-15T03:36:24 < dongs> irrelevant
2013-06-15T03:36:36 < dongs> point is, it doesnt happen with PDF generated by acrobat.
2013-06-15T03:37:20 < gxti> it's not very impressive that acrobat works with acrobat PDFs
2013-06-15T03:37:47 < gxti> oh we're talking about boring shit again
2013-06-15T03:37:57 < dongs> haha
2013-06-15T03:40:58 < dongs> zyp, when will youhave that hid shit done
2013-06-15T03:41:21 < zyp> some time next week, I'm on vacation until sunday
2013-06-15T03:41:24 < dongs> oh ok
2013-06-15T03:41:29 < dongs> i thought it was like now/soon
2013-06-15T03:41:29 < dongs> k
2013-06-15T03:41:32 < dongs> lemme know
2013-06-15T03:41:40 < dongs> there's some stuff goiing in monday i think
2013-06-15T03:42:00 < dongs> that i know has space, but anyway, 2l is pretty much every day/every other day
2013-06-15T03:42:26 < zyp> ah, nice to know
2013-06-15T03:43:36 < zyp> what about stencils?
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2013-06-15T03:48:59 < dongs> not sure. have something next week maybe.
2013-06-15T03:50:25 < dongs> heh i still have this useless fucking MAG3110 samples from feescale
2013-06-15T03:59:50 < zyp> hmm, maybe I should get a tag-connect cable so I won't have to put sockets on all the boards
2013-06-15T04:00:23 < zyp> especially if I just need swd to put a bootloader on the board
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2013-06-15T04:00:40 < dongs> lol
2013-06-15T04:00:49 < dongs> a dude here uses tagconnect shit on everythign
2013-06-15T04:00:53 < dongs> incl swd
2013-06-15T04:00:59 < Thorn> http://www.yaplakal.com/pics/pics_preview/7/2/8/1943827.jpg
2013-06-15T04:01:03 < zyp> seems less of a hassle than dicking up some way to use the serial bootloader
2013-06-15T04:01:08 < ds2> dongs: do they work better then the HMC stuff?
2013-06-15T04:01:30 < dongs> ds2: who, MAG3111? no its trash. 5983 is SPI + 220HZ odr + oversampling + built in temp compensation
2013-06-15T04:02:10 < dongs> o  btw zyp, my rev2 stuff with F3 + 5983 mag etc is working and flying with op code
2013-06-15T04:02:19 < zyp> nice
2013-06-15T04:02:42 < ds2> 5843
2013-06-15T04:02:51 < dongs> 5843 is old shit
2013-06-15T04:03:23 < ds2> but is the MAG3111 compareable to at least the 5843?
2013-06-15T04:03:44 < dongs> 80hz odr max on freescale part.
2013-06-15T04:03:58 < dongs> dun oabout noise and shit
2013-06-15T04:04:29 < ds2> does it require a reset cycle with every measurement?
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2013-06-15T04:05:35 < dongs> dont all mag sensors do taht
2013-06-15T04:05:45 < ds2> nope
2013-06-15T04:05:49 < ds2> depends on the underlying tech
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2013-06-15T04:17:14 < qyx_> usart2 problem for the second time today o\
2013-06-15T04:17:53 < zyp> heh, everybody selling the tag connect cables have fucking expensive shipping to norway
2013-06-15T04:18:21 < zyp> and digikey doesn't have the cortex variant yet
2013-06-15T04:18:36 < zyp> guess I'll just forget about it for now
2013-06-15T04:19:00 < gxti> what does it need a special variant for?
2013-06-15T04:20:36 < gxti> just the ribbon connector i guess
2013-06-15T04:28:02 < dongs> cortex variant?
2013-06-15T04:28:12 < dongs> just make a breakout
2013-06-15T04:28:24 < dongs> my dude just made a breakout board that does from RJ45 or whatever is on that thing
2013-06-15T04:28:28 < dongs> to a bunch of different ocnnectors
2013-06-15T04:28:40 < dongs> jtag, swim, swd, some SPI shit he uses, etf
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2013-06-15T04:38:44 < ds2> they sell it at the shows
2013-06-15T04:45:42 < zyp> dongs, too much work when they sell a variant that fits directly to the standard cortex debug connector :p
2013-06-15T04:47:51 < dongs> lol.
2013-06-15T04:47:56 < dongs> lazy fucker.
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2013-06-15T05:26:24 < dongs> fucking oven too slow
2013-06-15T05:26:45 < Simon--> needs more volts
2013-06-15T05:27:40 < dongs> ya its 220 but japs can only give me 200
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2013-06-15T05:34:02 < emeb_mac> get an autotransformer?
2013-06-15T05:34:35 < dongs> for liek 6kW?
2013-06-15T05:34:49 < emeb_mac> OK - it'd be a big one. :P
2013-06-15T05:35:43 < Simon--> we have that a lot here since they make 240V appliances intending to run off of two poles (+/- 120V at 180deg) but they often wire larger buildings with 3 phase power, so everything runs at 208V or kind of stretched to 215Vish
2013-06-15T05:36:21 < Simon--> so our oven's a bit slow too
2013-06-15T05:36:35 < Simon--> == slower dinnre
2013-06-15T05:39:36 < dongs> i had to get a special 200V drop hax0red into the house
2013-06-15T05:39:45 < dongs> the dudes looked at me like i was nuts
2013-06-15T05:46:38 < zyp> heh
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2013-06-15T05:47:21 < zyp> around here it's getting pretty normal to get 400V into the house
2013-06-15T05:47:40 < zyp> 3 phase, then distributed into 230V single phase
2013-06-15T05:50:10 < zyp> older areas get 230V 3 phase delta
2013-06-15T05:59:23 < dongs> they should just wire all teh houses for 12V DC
2013-06-15T06:03:52 < zyp> gonna run bus bars in all the walls then?
2013-06-15T06:04:37 < emeb_mac> mmmm - resistive heating!
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2013-06-15T06:06:18 < zyp> this is probably a bad place to ask, but does anybody happen to read books? I need suggestions for more stuff for my kindle :p
2013-06-15T06:08:03 < dongs> i bet your waiting for me to say lol, books
2013-06-15T06:09:34 < zyp> oh, I find it to be a nice way of wasting even more time and getting even less done :p
2013-06-15T06:23:28 < emeb_mac> what kind of books do you like?
2013-06-15T06:24:07 < zyp> unsure, I haven't read any I didn't like yet
2013-06-15T06:25:31 < emeb_mac> you looking for "pro" books that you pay for, or free stuff?
2013-06-15T06:26:33 < zyp> I don't mind paying
2013-06-15T06:26:44 < zyp> as long as it's available on the kindle store
2013-06-15T06:27:32 < emeb_mac> any of this stuff is good: http://www.amazon.com/s/ref=nb_sb_ss_c_0_6?url=search-alias%3Ddigital-text&field-keywords=scalzi&sprefix=scalzi%2Caps%2C561
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2013-06-15T06:28:04 < dongs> does that guy shit out one book per month?
2013-06-15T06:28:13 < dongs> release dates are barely 20 days apart
2013-06-15T06:28:21 < dongs> must be  quantity over quality
2013-06-15T06:29:15 < emeb_mac> the Human Division series is like individual chapters - you can buy the whole series at once too.
2013-06-15T06:29:28 < emeb_mac> here's another: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Ddigital-text&field-keywords=stross&rh=n%3A133140011%2Ck%3Astross
2013-06-15T06:30:27 < emeb_mac> stross knows tech pretty well (used to be a programmer, computer journalist, pharmacist) and writes convincingly about it.
2013-06-15T06:32:13 < emeb_mac> or this: http://www.amazon.com/s/ref=nb_sb_ss_i_0_8?url=search-alias%3Ddigital-text&field-keywords=alastair+reynolds&sprefix=reynolds%2Cdigital-text%2C192&rh=n%3A133140011%2Ck%3Aalastair+reynolds
2013-06-15T06:33:20 -!- TheSeven [~quassel@rockbox/developer/TheSeven] has quit [Disconnected by services]
2013-06-15T06:33:28 < emeb_mac> Reynolds used to work as an astronomer at ESA. Revelation Space series is quite good.
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2013-06-15T06:34:47 < emeb_mac> http://www.amazon.com/s/ref=nb_sb_ss_i_0_10?url=search-alias%3Ddigital-text&field-keywords=neal+stephenson&sprefix=stephenson%2Cdigital-text%2C192&rh=n%3A133140011%2Ck%3Aneal+stephenson
2013-06-15T06:36:35 < emeb_mac> the roots of cyberpunk and then some: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Ddigital-text&field-keywords=william+gibson&sprefix=stephenson%2Cdigital-text%2C192&rh=n%3A133140011%2Ck%3Awilliam+gibson
2013-06-15T06:37:36 < emeb_mac> enough? :)
2013-06-15T06:41:22 < zyp> way too much to pick from :)
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2013-06-15T10:26:46 < emeb_mac> typical activity in Germany: http://www.thelocal.de/society/20130614-50295.html
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2013-06-15T10:46:53 < R2COM> it is not a typical activity there
2013-06-15T10:59:01 < Tectu> good morning, folks
2013-06-15T11:04:00 < R2COM> good morning troll
2013-06-15T11:04:15 < Tectu> huh? what now? o.O
2013-06-15T11:04:36 < R2COM> you are just one little troll
2013-06-15T11:04:39 < R2COM> running around here
2013-06-15T11:04:49 < R2COM> talking sometimes about random analog stuff
2013-06-15T11:05:10 < Tectu> asking people about PCB designs?
2013-06-15T11:05:19 < R2COM> well yea and whatnot
2013-06-15T11:06:57 < Tectu> what ever...
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2013-06-15T11:45:31 < Tectu> are there PCB manufacturers which want extra monies when your PCB outline is not rectangular or when you have a complex one?
2013-06-15T12:01:18 < BJfreeman> the one I use  http://www.sunstone.com/products-services/quickturn-proto-boards/pricing.aspx
2013-06-15T12:01:38 < dongs> no, routing is free unless its ridiculously retarded
2013-06-15T12:01:47 < dongs> like really retarded
2013-06-15T12:01:58 < BJfreeman> I also use a CNC to do ones local
2013-06-15T12:03:13 < Tectu> dongs, how do you classify a board outline by retardness? Talking about some star shape here
2013-06-15T12:03:35 < Tectu> dongs, I bet this one is retarded?  http://hackadaycom.files.wordpress.com/2012/06/bullduino-e1340470652586.jpg?w=470&h=260
2013-06-15T12:04:10 < dongs> http://www.instablogsimages.com/images/2010/03/25/pcb-sculpture_3_hTkY5_69.jpg
2013-06-15T12:04:12 < dongs> this would be retarded
2013-06-15T12:04:54 < dongs> Tectu: no that one is fine
2013-06-15T12:05:02 < dongs> thoguh you will pay for all the wasted fr4 of course
2013-06-15T12:05:08 < dongs> as youll be billed for rectangular area
2013-06-15T12:05:19 < Tectu> makes sense
2013-06-15T12:05:30 < Tectu> thanks
2013-06-15T12:05:45 < Tectu> regarding to zyps words, I should order my next PCBs from you
2013-06-15T12:12:47 < Tectu> sometimes flexible PCBs do have some kind of plastic or FR4-like material glued to reinforce it at strategic points to mount it - is this something a manufacturer does for you as well? Is that somehow "gerber standardized" ?
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2013-06-15T12:28:36 < R2COM> lol
2013-06-15T12:29:33 < dongs> ive seen it before, duno tho
2013-06-15T12:29:41 < R2COM> I use FR408 mainly
2013-06-15T12:29:42 < dongs> im sure R2COM knows
2013-06-15T12:29:58 < dongs> knew it
2013-06-15T12:29:58 < R2COM> and some FR406, HR370
2013-06-15T12:30:02 < dongs> he uses ADVANCED fr4
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2013-06-15T12:44:53 < Tectu> huh, never heard of FR4 with more digits
2013-06-15T12:44:56 < Tectu> neither of HRxxx
2013-06-15T12:45:05 < Tectu> R2COM, what's your job?
2013-06-15T12:47:38 < R2COM> why
2013-06-15T12:50:50 < Tectu> wondering that you know that much about PCBs
2013-06-15T12:50:57 < Tectu> therefore I bet you're not in the transport business
2013-06-15T12:51:13 < R2COM> mainly remote sensing/rf, custom measurement systems for dynamical systems, ic design.
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2013-06-15T13:44:38 < Tectu> ic design as in asics?
2013-06-15T13:44:48 < R2COM> yes
2013-06-15T13:45:29 < Tectu> cool
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2013-06-15T14:01:25 < R2COM> now its really late I passed sleep time
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2013-06-15T14:02:15 < R2COM> still need sleep, since I am stil human (for now only...)
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2013-06-15T14:12:29 <+Steffanx> sleep well R2COM :)
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2013-06-15T14:38:09 < Tectu> I am searching for some 7805, 7905, 7812 and 7912 regulators which can do at least 500mA in some sane SMD package
2013-06-15T14:39:45 < Thorn> there're so many modern ones with better protection etc.
2013-06-15T14:40:02 < Tectu> can you recomend any?
2013-06-15T14:40:03 < qyx_> are you going to put them on your board and draw 500mA from them?
2013-06-15T14:40:19 < Tectu> qyx_, no, the normal DC current will be < 300mA
2013-06-15T14:40:32 < Tectu> I just don't want to use a 250mA regulator when using exactly 250mA
2013-06-15T14:42:00 < Tectu> how about the LFXX series?
2013-06-15T14:42:42 < qyx_> i use them
2013-06-15T14:42:52 < qyx_> in dpak
2013-06-15T14:43:56 < Tectu> I only know the LF33 in dpak and I like it so far
2013-06-15T14:44:11 < qyx_> but probably there are no negative versions available
2013-06-15T14:44:18 < Tectu> just saw that :/
2013-06-15T14:44:34 < qyx_> i would just open farnell or something similar and do a search
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2013-06-15T14:49:25 < Tectu> those old 78xx series seem to have like 4 to 5% tolerance
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2013-06-15T14:56:04 < dongs> sup blogs
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2013-06-15T15:00:43 < inca> sup dongs? what's new in the world
2013-06-15T15:03:33 < baird> blog: By this time next week, I should be a homeless hobo..
2013-06-15T15:04:52 < inca> baird: you will be free by next week? congratz!
2013-06-15T15:11:25 < baird> PRISM can't INVADE you if you're OFF THE GRID.
2013-06-15T15:12:36 < inca> =)
2013-06-15T15:20:39 < Laurenceb__> or if you like.. dont use facebook
2013-06-15T15:20:48 < Laurenceb__> not exactly har
2013-06-15T15:20:53 < Laurenceb__> d
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2013-06-15T15:23:21 < baird> "Sir, the investigation is being delayed because he's running his own mail-server."
2013-06-15T15:27:22 < dongs> lol farnell search
2013-06-15T15:29:04 < dongs> baird, i would imagine anyone running thier own mail server is more likely suspect than not.
2013-06-15T15:29:12 < dongs> normal people dont run servers, mail servers, etc.
2013-06-15T15:29:17 < dongs> this is something only hackers and criminals do
2013-06-15T15:29:22 < dongs> same goes for running luinix
2013-06-15T15:29:28 < dongs> its not a normal person OS.
2013-06-15T15:29:43 < dongs> if someone is running it, they probably have something to hide, either cp or warez or other similarly illegal stuff.
2013-06-15T15:30:44 < qyx_> haha
2013-06-15T15:30:58 < Thorn> what about those who make their own electronics. now THAT's suspicious. what can't you buy these days except a bomb timer. (chemistry is already essentially illegal)
2013-06-15T15:31:00 < baird> quiet, fool, they'll find out if you keep blabbing about it on the net.
2013-06-15T15:31:00 < qyx_> for sure
2013-06-15T15:32:34 < Tectu> can anyone explain me the difference of  "Package / Case"   and  "Supplier Device Package"  on the digikey filter pages?
2013-06-15T15:32:35 < Tectu> http://www.digikey.com/scripts/dksearch/dksus.dll?pv7=2&FV=c00016&k=lm1117&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
2013-06-15T15:32:43 < dongs> Tectu: yeah its annoying
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2013-06-15T15:33:06 < dongs> there's like 20 different manufacturers who call msop10 differnt names
2013-06-15T15:33:13 < dongs> micro10, umax, that sorta shit
2013-06-15T15:33:25 < dongs> then there's actually some SC-xx name for SOT23
2013-06-15T15:33:30 < Tectu> huh
2013-06-15T15:33:37 < Tectu> why do people do those kind of things
2013-06-15T15:33:41 < dongs> sc70 i think
2013-06-15T15:33:42 < dongs> is sot23
2013-06-15T15:34:33 < dongs> also TO236AB
2013-06-15T15:34:36 < dongs> mind: blown
2013-06-15T15:34:57 < Tectu> also funny with all the DPAK, D²PAK, DPAK-3, DPAK-2, TO-263 etc
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2013-06-15T15:35:09 < dongs> TO-252 roo.
2013-06-15T15:35:13 < dongs> er, too rather
2013-06-15T15:35:17 < dongs> i tihnk trhats dpak.
2013-06-15T15:35:20 < dongs> d2pak is 263.
2013-06-15T15:35:41 < dongs> anyway.
2013-06-15T15:35:49 < dongs> no difference except i think manufacturer shit gives the weird name
2013-06-15T15:35:56 < dongs> like umax10 etc
2013-06-15T15:36:08 < dongs> where package/case will standard on something like msop10
2013-06-15T15:36:54 < Tectu> it's just annoying and doesn't help anyone
2013-06-15T15:38:05 < dongs> neither is irc trolling
2013-06-15T15:38:08 < dongs> yet it still happens
2013-06-15T15:38:36 < Tectu> good one
2013-06-15T15:39:41 < dongs> glad to be of service
2013-06-15T15:40:04 < dongs> apparently  SC-xx naming is jap
2013-06-15T15:40:06 < dongs> i didnt know.
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2013-06-15T15:50:52 < inca> This guy just brightened up my morning: http://slproweb.com/products/Win32OpenSSL.html
2013-06-15T15:51:08 < inca> Read the part in red
2013-06-15T15:55:37 < kuldeepdhaka> hello!, im looking for ssd1289 driver (for arm gcc) , i googled and cant find any right code for it, (i have a STM32F4)
2013-06-15T15:55:59 < Tectu> rofl @ inca
2013-06-15T15:56:13 < Tectu> kuldeepdhaka, http://chibios-gfx.com might be what you're searching for
2013-06-15T15:57:29 < Tectu> inca, "Please punch yourself in the face to knock some common sense into yourself. Thank you."  :D
2013-06-15T15:58:01 < inca> that's what I am about to do... I can't even find where windows just installed these damn openssl files
2013-06-15T16:00:51 < Tectu> I bet dongs may help you
2013-06-15T16:01:11 < inca> it's ok... I'll reinstall them and click other options
2013-06-15T16:03:47 < inca> if it will ever load the installer
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2013-06-15T16:07:05 < Tectu> meh, still needing +1.2V and 2.5V LDOs for my FPGA
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2013-06-15T16:42:30 < Laurenceb__> Tectu: so does chibios/gfx support the sony watch?
2013-06-15T16:42:46 < GargantuaSauce> kuldeepdhaka: here's my shit bitbanged one https://bitbucket.org/Ultrasauce/robots/src/41b0d55257aab94ec4c56097b90703b2e120c312/stm32/first-steps/lcd.c if chibios is too heavyweight for your purposes
2013-06-15T16:43:07 < Tectu> Laurenceb__, nope
2013-06-15T16:43:11 < Tectu> Laurenceb__, want to build support?
2013-06-15T16:43:48 < kuldeepdhaka> GargantuaSauce, thnx
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2013-06-15T16:44:22 < Tectu> GargantuaSauce, I like line 282 :)
2013-06-15T16:45:08 < GargantuaSauce> yeah i tried rolling my own startup sequence from the datasheet but never got the damn thing to work
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2013-06-15T16:45:21 < GargantuaSauce> so that is copypasta from some arduino lib
2013-06-15T16:45:27 < Tectu> :D
2013-06-15T16:45:33 < Tectu> dat license violation
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2013-06-15T16:50:31 < baird> dat spinnin cubez
2013-06-15T16:51:34 < Tectu> baird, wasn't there something like that for /demos/3rdparty comming? ;)
2013-06-15T16:53:11 < baird> Reminds me of this-- demo scrollertext, spinning cubez, etc. are /so/ 1981 ... http://molecularmovies.com/movies/olson_TBSV.mov
2013-06-15T16:53:36 < GargantuaSauce> what if they're done with LAZERS
2013-06-15T16:54:29 < GargantuaSauce> https://www.youtube.com/watch?v=OELxDGtESMI aw yeh
2013-06-15T16:54:33 < Tectu> http://www.youtube.com/watch?v=KfVS-npfVuY
2013-06-15T16:55:50 < GargantuaSauce> man it would suck to be working on that for hours
2013-06-15T16:56:08 < GargantuaSauce> dat welder's flash
2013-06-15T16:56:38 <+Steffanx> "Is it dangerous? It is Dangerous" :D
2013-06-15T16:56:47 < baird> I was at a seminar presentation last weekend by Biological Visualisation researchers (http://vizbi.org)-- ..and yes, they have 3D laser gear like that to play with. :)
2013-06-15T16:57:37 < baird> Beta-testers for that new Kinetec device, too.
2013-06-15T16:58:29 < baird> Basically all the guys (scientics, artists) from the CSIRO group involved except for Drew Berry was there.
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2013-06-15T17:13:33 < baird> wut .. http://au.element14.com/embest/embedded-pi/rpi-arduino-like-stm32-i-o-board/dp/2301086?Ntt=2301086&ICID=ap-2301086-np2
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2013-06-15T17:14:15 <+Steffanx> old, very old baird
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2013-06-15T17:15:41 < zyp> dongs, do you have a good source for f3 chips?
2013-06-15T17:17:14 < Tectu> saw that last week
2013-06-15T17:17:28 < Tectu> baird, this you need: http://au.element14.com/arduino/k000001/basic-kit-with-tinkerkit-modules/dp/2075348?in_merch=true&MER=MER-L52-L5IB-PD-ACC-SMT
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2013-06-15T17:18:01 < Ranewen> 160$
2013-06-15T17:18:16 < Tectu> for 50g
2013-06-15T17:18:31 < Ranewen> 50g of awsomeness
2013-06-15T17:18:32 < Tectu> but it has 7 different sensors and 5 actors!!!!
2013-06-15T17:19:43 < Ranewen> is there any free shipping on discovery boards to europe ?
2013-06-15T17:20:06 < Ranewen> i mean, does anyone know a shop or something
2013-06-15T17:20:22 < baird> Freescale are coming out with an even cheaper Cortex board.. FRDM-KL02Z . Looks to be about AU$15
2013-06-15T17:20:37 < dongs> zyp, define "good"
2013-06-15T17:20:47 < zyp> dongs, cheap
2013-06-15T17:20:50 < dongs> which ones?
2013-06-15T17:21:17 < zyp> f3, haven't decided exactly which yet
2013-06-15T17:21:18 < Ranewen> baird, when will it be available ?
2013-06-15T17:21:22 < dongs> oic
2013-06-15T17:21:34 < dongs> i have 303RB and CC
2013-06-15T17:21:41 < dongs> VC is available anywhere.
2013-06-15T17:22:11 < baird> dongs: from the 3rd of July
2013-06-15T17:22:22 < zyp> Cx might be too little IO, Rx might be enough
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2013-06-15T17:23:54 < dongs> baird: wat
2013-06-15T17:23:55 < Tectu> http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=FRDM-KL02Z
2013-06-15T17:23:56 < Tectu> baird, really? t
2013-06-15T17:24:06 < Tectu> that board looks close to tarduino
2013-06-15T17:24:12 < Tectu> I bet it's shield compatible
2013-06-15T17:24:29 < dongs> < Tectu> I bet it's shit compatible
2013-06-15T17:24:55 < Ranewen> m0
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2013-06-15T17:25:03 < Tectu> m0+ !!
2013-06-15T17:25:22 < Ranewen> whatever
2013-06-15T17:25:26 < Ranewen> slow
2013-06-15T17:25:42 < Tectu> not suited for spinnin cubez you mean?
2013-06-15T17:27:07 < Ranewen> well im not quite "edjucated" to give advices, but yes
2013-06-15T17:27:44 < Tectu> you must be new here
2013-06-15T17:27:47 < Tectu> welcome
2013-06-15T17:28:26 < Ranewen> not quite :/
2013-06-15T17:28:41 < Ranewen> my eval board is still shipping
2013-06-15T17:29:03 < Ranewen> i only played in debugger for a couple of hours
2013-06-15T17:29:30 < Tectu> what eval board did you get?
2013-06-15T17:29:34 < Tectu> are you getting*
2013-06-15T17:29:35 < Ranewen> f4
2013-06-15T17:29:44 < Ranewen> from ebay "reseller"
2013-06-15T17:29:49 < Tectu> got some nasty LCD for spinnin cubez?
2013-06-15T17:30:16 < Ranewen> ehm.. first to learn interuptzz and basicz
2013-06-15T17:30:52 < Tectu> good
2013-06-15T17:30:55 < Tectu> don't do the z thing
2013-06-15T17:30:58 < Tectu> it's a bad thing
2013-06-15T17:31:11 < Ranewen> makes me look like native english speaker
2013-06-15T17:31:49 < Ranewen> what do you think about communicating with a drone via gsm ?
2013-06-15T17:32:13 < Ranewen> like to send/recive data in a call
2013-06-15T17:34:36 < Tectu> not sure why I would want to do that
2013-06-15T17:34:51 < Tectu> do you really want nsa controlling your drone?
2013-06-15T17:34:56 < qyx_> to get nice invoice with many decimal places
2013-06-15T17:35:05 < Ranewen> im from eu
2013-06-15T17:35:05 < dongs> waht board
2013-06-15T17:35:18 < Ranewen> i cant even use an zigbee
2013-06-15T17:35:24 < qyx_> why you cant
2013-06-15T17:35:31 < Tectu> you can use them
2013-06-15T17:35:39 < Tectu> qyx_, and me are from EU as well
2013-06-15T17:35:42 < Tectu> well, I am not, but he is
2013-06-15T17:36:05 < Ranewen> well, when my proffessor wanted to order them from farnell, farnell said that we first need some paperwork.....
2013-06-15T17:36:15 < qyx_> huh?
2013-06-15T17:36:48 < qyx_> zigbee modules are free to buy here even from local supplies
2013-06-15T17:36:50 < qyx_> farnell too
2013-06-15T17:37:01 < Ranewen> not available in my country
2013-06-15T17:37:04 < qyx_> maybe they need that to ship to some countries
2013-06-15T17:37:18 < Tectu> what country, Ranewen?
2013-06-15T17:37:20 < qyx_> someone here had problem with that in iceland
2013-06-15T17:37:24 < Ranewen> Tectu, croatia
2013-06-15T17:37:41 < qyx_> Ranewen: order from ebay then
2013-06-15T17:37:52 < Tectu> qyx_, you were from serbia? or was it czech?
2013-06-15T17:38:16 < dongs> < israel
2013-06-15T17:38:23 < Tectu> sure.
2013-06-15T17:38:51 < karlp> baird: that freedom kl02z looks prtty crap to be honest, on digikey at least, all the freedom boards are the same price, so with kl02, kl05 an dkl25 I can't see any reason I'd want to choose the kl02 board
2013-06-15T17:38:53 < qyx_> Tectu: sk
2013-06-15T17:39:21 < Ranewen> Tectu, but gms would offer "unlimited" range...
2013-06-15T17:39:24 < Tectu> now I have to look up which country is 'sk' on google. thanks.
2013-06-15T17:39:38 < karlp> Ranewen: I feel your pain brother, zigbee export restrictions are going to be the death of it.
2013-06-15T17:39:40 < Tectu> Ranewen, I bet that is where it gets illegal anyway
2013-06-15T17:39:57 < karlp> bluetooth4 low energy might just replace it at this rate.
2013-06-15T17:40:16 < Tectu> karlp, btle is really not for the same range
2013-06-15T17:40:23 < Tectu> and bandwith
2013-06-15T17:40:28 < qyx_> do dney apply also to generic 802.15.4 devices?
2013-06-15T17:41:00 < Ranewen> karlp, what is the alternative ?
2013-06-15T17:41:07 < GargantuaSauce> http://dx.com/p/nrf24l01-pa-lna-wireless-communication-modules-w-antenna-for-arduino-148822
2013-06-15T17:41:09 < GargantuaSauce> use these
2013-06-15T17:41:34 < karlp> Ranewen: well, finding companies that read the export restrictions properly, rather than farnell and digikey who just throw your order into a black hole
2013-06-15T17:41:46 < karlp> and doing it all yourself, like those nordic things.
2013-06-15T17:41:54 < karlp> ant(+) and bluetooth low energy.
2013-06-15T17:41:56  * karlp shrugs
2013-06-15T17:42:08 < karlp> I'm soldiering on with 802.15.4, but the parts availability is annoying
2013-06-15T17:42:22 < Ranewen> still u dont like my gsm idea
2013-06-15T17:42:36 < qyx_> karlp: you can do 6LoWPAN over it
2013-06-15T17:42:44 < qyx_> if it only applies to zigbee and not 802.15.4
2013-06-15T17:42:46 < karlp> qyx_: 6lowpan on what?
2013-06-15T17:43:10 < karlp> the export restrictions are on 802.15.4 hardware, if that's what you were meaning/asking
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2013-06-15T17:43:22 < qyx_> meh
2013-06-15T17:43:23 < karlp> 802.15.4 has AES built into the standard.
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2013-06-15T18:11:09 < Tectu> and not a single ERC was given that day
2013-06-15T18:11:43 -!- baird [~cjb@ppp121-44-223-207.lns20.syd7.internode.on.net] has quit [Quit: Konversation terminated!]
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2013-06-15T18:20:32 <+Steffanx> And the rules are correct Tectu? :)
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2013-06-15T20:05:35 < Laurenceb__> http://chibios-gfx.com/simulator
2013-06-15T20:05:38 < Laurenceb__> nice work :P
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2013-06-15T20:11:57 < Laurenceb__> http://b-electronics.ch/
2013-06-15T20:11:59 < Laurenceb__> i lolled
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2013-06-15T20:14:41 < BrainDamage> http://b-electronics.ch/products/makerbeam
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2013-06-15T20:18:23 < Laurenceb__>  This allows it build your machine without the need of any sawing, milling or other form of workshop involving activities.
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2013-06-15T20:18:28 < Laurenceb__> sawing?! the horror
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2013-06-15T20:22:13 < trepidaciousMBR> That stuff is cool, where I used to work we built robots with similar but much larger stuff.
2013-06-15T20:22:34 < trepidaciousMBR> and nicer bracket thingies, usually
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2013-06-15T21:42:05 < flop> time to get some free samples!
2013-06-15T21:43:59 < Tectu> flop, of?
2013-06-15T21:44:13 < flop> the new stm32f4
2013-06-15T21:44:22 < flop> those with 256KB sram
2013-06-15T21:45:06 < flop> there's one coming soom with sdram support, yay!
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2013-06-15T22:47:00 < Laurenceb__> http://www.youtube.com/watch?v=BFq_shwOwDk
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2013-06-15T23:00:41 < Tectu> flop, they "are coming" since a long time
2013-06-15T23:01:55 < flop> Tectu: when will they be there??
2013-06-15T23:02:24 <+Steffanx> Winter is coming as well Tectu
2013-06-15T23:05:13 < Tectu> thanks Steffanx
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2013-06-15T23:13:18 < Laurenceb__> so is ur mum
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2013-06-15T23:21:39 < gxti> is she bringing cookies?
2013-06-15T23:22:31 <+Steffanx> Apple cake
2013-06-15T23:25:46 < Thorn> a minute ago I've been unable to use a discovery to program a device via swd. they were powered from different usb hubs (connected to the same outlet). powering the device from the discovery solved the problem. gnd was tied together in both cases. wtf.
2013-06-15T23:27:45 < gxti> tuning chibios+lwip is hard when you have no idea what you're doing
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2013-06-15T23:30:04 < Tectu> what do you want to tune?
2013-06-15T23:31:16 < gxti> basic http server, right now half the time it works great and half the time it takes a few seconds to transfer due to lost packets
2013-06-15T23:32:10 < gxti> works 100% of the time if i remove the actual application, which is servicing interrupts something like 8k times per second
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2013-06-15T23:42:27 < Thorn> I have 0.3V difference between grounds of my bmp clone and the target device lol.
2013-06-15T23:42:49 < Thorn> a jumper wire to connect gnds seems to make it work
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2013-06-15T23:50:27 < Thorn> btw it looks like bmp enumerates much more reliably with latest firmware
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2013-06-15T23:52:27 < gxti> setting TCP_OVERSIZE to 0 seems to make it a little slower but a lot more reliable
--- Day changed Sun Jun 16 2013
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2013-06-16T00:28:08 < Laurenceb__> http://forum.xda-developers.com/showthread.php?t=1422106
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2013-06-16T00:28:26 < trepidaciousMBR> gxti: Have you tried looking at lwip stats?
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2013-06-16T00:39:01 < Tectu> so, I need an easy and not place intensive solution to get an analog -12V to +12V signal out of a digital 0 to 3.3V one. The load is about 1mA but the "generated" voltage needs to be as stable as possible
2013-06-16T00:40:14 < sterna1> Tectu: can't you do something like that using max232? isn't that almost what they do?
2013-06-16T00:40:25 < Thorn> huh? you want 0 -> -12V and 3.3 -> +12V or a DAC or what?
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2013-06-16T00:41:08 < Tectu> Thorn, -12V to +12V DAC?
2013-06-16T00:41:17 < Tectu> Thorn, but yes
2013-06-16T00:41:36 < Tectu> the 3.3V is digital, and I need to get an analog voltage out of there
2013-06-16T00:41:39 < Thorn> you say analog signal from a digital one. that sounds like you want a DAC
2013-06-16T00:41:50 < Thorn> what do you mean by analog
2013-06-16T00:41:58 < gxti> or digital for that matter
2013-06-16T00:42:05 < Tectu> not either -12V or +12V, but anything in between as well
2013-06-16T00:42:34 < Tectu> Thorn, are there any integrated solutions of DACs which can also handle negative voltages?
2013-06-16T00:43:09 < gxti> if not you can probably do it with a single opamp
2013-06-16T00:43:16 < gxti> i don't actually know offhand though :P
2013-06-16T00:43:29 < Thorn> you can always level shift with op amps (which will need +-15V power)
2013-06-16T00:43:37 < Tectu> well, simple 50:50 resistor divider
2013-06-16T00:43:40 < Thorn> or something like that
2013-06-16T00:47:57 < gxti> trepidaciousMBR: forgot about stats, they seem useful
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2013-06-16T00:48:13 < trepidaciousMBR> Yup, it let me fix the problem I was having with connection resets
2013-06-16T00:48:34 < trepidaciousMBR> You can see if it is running out of various memory/structures
2013-06-16T00:49:16 < Laurenceb__> https://code.google.com/p/openliveview/
2013-06-16T00:50:09 <+Steffanx> what is that Laurenceb__?
2013-06-16T00:50:40 < Laurenceb__> stm32 based watch
2013-06-16T00:51:25 <+Steffanx> but is it really relevant for that contest?
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2013-06-16T01:01:52 < Tectu> okay, what's some sane, modern, cheap but yet nice working voltage feedback opamp in a small package?
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2013-06-16T01:02:44 < gxti> tl072 works fine as long as you feed it +/-15V
2013-06-16T01:02:56 < gxti> pretty old stuff but it's cheap and gets the job done
2013-06-16T01:03:23 < Thorn> do you need AC or DC accuracy? what frequencies? etc.
2013-06-16T01:04:21 < Thorn> also acceptable current/voltage noise etc. there're thousands of op amps, none of them are universal
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2013-06-16T01:06:33 < Tectu> Thorn, DC accurancy
2013-06-16T01:06:33 < Tectu> lowest noise possible :)
2013-06-16T01:06:39 < Thorn> then tl072 is probably out
2013-06-16T01:06:56 < Tectu> TL072 sounds like some audio opamp, eh
2013-06-16T01:07:24 < gxti> i don't think you really mean "lowest noise possible"
2013-06-16T01:07:44 < gxti> because that costs tens of thousands of dollars and months of a few expert engineers' time :p
2013-06-16T01:07:59 < Laurenceb__> audiophile amp
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2013-06-16T01:14:26 < Tectu> gxti, lower noise possible for 1$ ;-)
2013-06-16T01:14:47 < gxti> Tectu: what is it for?
2013-06-16T01:14:53 < Thorn> if you want a DC amp what's your acceptable input offset voltage?
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2013-06-16T01:16:32 < Tectu> gxti, currently I have some lowpass filter on the positive input of an operation amplifier to adjust the DC-Offset of some signal. This is currently driver by a 3.3V GPIO pin. Now I'd like to go a bit further, from -12V to +12V instead of 0V to 3V. Therefore I'd like to just take some ridiculous low cost OpAmp, pump the voltage behind the low pass filter onto one input and some 50:50 resistor divider on the other (to also be able to move below 0V). Then
2013-06-16T01:16:32 < Tectu>  feed that signal to the other opamp
2013-06-16T01:16:48 < Tectu> I hope you get my point, otherwise I'll do some schematics sharing
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2013-06-16T01:17:46 < Thorn> so your GPIO outputs a PWM signal?
2013-06-16T01:17:57 < Tectu> yep
2013-06-16T01:18:04 < Tectu> maybe I should have choosen those words before :)
2013-06-16T01:18:18 < Thorn> maybe.
2013-06-16T01:18:56 < gxti> ah nice, lwip calls debug printf while holding locks
2013-06-16T01:20:34 < Tectu> gxti, so any OpAmp there? :)
2013-06-16T01:21:05 < gxti> Tectu: finding opamps is hard work, i'm not gonna do it for you :p
2013-06-16T01:21:22 < Tectu> jup, that's why I just asked if there are any well known ones for this job
2013-06-16T01:21:31 < Tectu> that's all :)
2013-06-16T01:21:34 < gxti> i doubt you really need better than tl072, its offset voltage only 0.1% error and you can calibrate it out
2013-06-16T01:21:54 < Tectu> let's take a look at the noise
2013-06-16T01:22:01 < Tectu> because any noise of it will be in the signal afterwards
2013-06-16T01:22:26 < Thorn> your PWM ripple is noisier than any op amp noise
2013-06-16T01:22:51 < Tectu> maybe some more lowpass after the OpAmp?
2013-06-16T01:23:06 < Tectu> since the DC offset does not need to be changed that quickly, there can be quite a C
2013-06-16T01:23:13 < Thorn> maybe a dac or a digital pot.
2013-06-16T01:25:14 < Thorn> anyway you should measure the ripple both after the filter and on the output of your existing op amp
2013-06-16T01:25:25 < Tectu> hmkay
2013-06-16T01:25:26 < Thorn> chances are it gets nicely amplified
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2013-06-16T01:26:11 < Tectu> yeap, because the opamp behind is a beast
2013-06-16T01:26:17 < Tectu> it's a THS3001 (CFB)
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2013-06-16T01:26:39 < Thorn> what's the gain
2013-06-16T01:26:48 < Tectu> around 5.8
2013-06-16T01:27:13 < Tectu> wait, not true, 6.8 is the entire thing, that stage has 2.4 or so
2013-06-16T01:31:32 < Thorn> I finally have a proper makefile with a separate build dir, auto dependency generation etc.
2013-06-16T01:31:48 < Tectu> http://www.linear.com/product/LT1115
2013-06-16T01:33:58 < Thorn> and you're going to use that to set a dc offset.
2013-06-16T01:35:11 < Tectu> nope
2013-06-16T01:35:17 < Tectu> I guess a simple 741 will do here
2013-06-16T01:36:12 < gxti> lol...
2013-06-16T01:36:19 < Tectu> huh?
2013-06-16T01:36:35 < Tectu> gxti, what's wrong with a good old UA741 for that application?
2013-06-16T01:40:15 < gxti> if ua741 is good enough, then literally any part with the right vcc range will work
2013-06-16T01:40:22 < gxti> it's a fossil
2013-06-16T01:41:25 < Tectu> I just need it to "adapt" some DC voltage
2013-06-16T01:41:43 < Tectu> if you can recommend any better part for that job, my ears welcome you :)
2013-06-16T01:41:56 < gxti> i did already, tl072. it's also old but at least it has JFET input.
2013-06-16T01:43:14 < Tectu> ah, I searched for a TLC072, sorry
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2013-06-16T01:45:41 < gxti> the jfet input will actually help because it will let you use more filtering on the pwm without disturbing it
2013-06-16T01:46:01 < Tectu> makes sense
2013-06-16T01:46:05 < Tectu> and it's even pin compatible
2013-06-16T01:46:50 < Thorn> you should place a cap in its feedback loop for more filtering and stability btw
2013-06-16T01:47:06 < gxti> i did pretty much the same thing here, but 0-12V, where it says 'VFC DAC': http://partiallystapled.com/~gxti/circuits/2012/08/20-serafine_sch.png
2013-06-16T01:47:20 < gxti> although the negative supply should have been -5V there, not ground
2013-06-16T01:47:36 < gxti> because like all old opamp designs it requires like 2V or more of margin from the rail
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2013-06-16T01:48:48 < neuro_sys> "no free z80s anymore", wut?
2013-06-16T01:49:21 < Tectu> Thorn, good one with the cap. How does one determine the capacitance? I assume as bigger as more stable it will be, but the reactance (is this the right word in english?) will be slower?
2013-06-16T01:49:48 < Thorn> calculate your required GBW
2013-06-16T01:49:58 < Thorn> max freq * gain
2013-06-16T01:50:19 < Tectu> it's DC :<
2013-06-16T01:50:24 < Tectu> let's go with 1Hz
2013-06-16T01:50:45 < Thorn> freq is the frequency after the filter of course (of your "analog signal")
2013-06-16T01:51:42 < Tectu> nono, this op amp is really just required to generate the DC voltage for the DC offset of the OpAmp which actually amplifies the DC signal
2013-06-16T01:51:47 < Tectu> the analog signal*
2013-06-16T01:52:36 < Tectu> gxti, interesting approach with the two low pass filters in series
2013-06-16T01:52:41 < Tectu> I might steal that
2013-06-16T01:52:42 < Tectu> :D
2013-06-16T01:52:47 < Thorn> but it does change from time to time? and the output needs to react with some speed to that change?
2013-06-16T01:54:11 < Tectu> yes, of course
2013-06-16T01:54:22 < Tectu> still 1Hz is more than enough
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2013-06-16T02:06:16 < Thorn__> btw, I got a device with a 3-color status LED: red, blue and light blue. does red + blue give light blue?
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2013-06-16T02:06:46 < qyx_> probably not
2013-06-16T02:07:08 < Thorn> why such weird choice of colors then
2013-06-16T02:07:20 < Tectu> sounds like some apple status LED
2013-06-16T02:07:21 < Thorn> blue and light blue look similar
2013-06-16T02:07:31 < Thorn> it's a crappy 3G usb modem
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2013-06-16T03:04:58 < Thorn> #&^*^#. looked at the gerbers which were sent to the fab. gnd pins in the debug connector are not connected to ground.
2013-06-16T03:05:33 < Thorn> my black magic clones are perfectly fine.
2013-06-16T03:05:35 < gxti> hmm, i guess when lwip says NUM_TCP_PCB is "the number of simultaneously active TCP connections" that also counts closed connections
2013-06-16T03:06:42 < Thorn> remember about TIME_WAIT and stuff
2013-06-16T03:06:42 < gxti> trying to run apachebench for the lulz, and lwip tries to log not having enough memory to alloc a pcb, and logging causes chibios to halt because it's already locked. hilarious.
2013-06-16T03:06:48 < gxti> yes, it's TIME_WAIT.
2013-06-16T03:07:08 < gxti> this is the second thing i've been bitten by because the comments in lwipopts.h are misleading :p
2013-06-16T03:07:28 < gxti> the first being some constraint with MSS that you only get warned about if you have debug on
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2013-06-16T03:10:09 < gxti> looks like it actually handles this fine except for the part where trying to log causes a halt
2013-06-16T03:11:09 < gxti> yep, first thing it does is kill the oldest TIME_WAIT connection
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2013-06-16T03:14:20 < gxti> tsk tsk, calling LWIP_DEBUGF while holding a global lock. very rude!
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2013-06-16T03:43:51 < Tectu> emeb_mac, ping
2013-06-16T03:45:58 < emeb_mac> Tectu: pong
2013-06-16T03:46:35 < Tectu> emeb_mac, when I connect my BMP to my MCU directly on the same board, do I need any pull downs between these two (in the JTAG inteface) ?
2013-06-16T03:46:56 < emeb_mac> Tectu: I doubt it.
2013-06-16T03:47:38 < Tectu> emeb_mac, okay, thanks!
2013-06-16T03:47:40 < emeb_mac> IIRC the STM32 JTAG pins have built-in pulls that should be enough.
2013-06-16T03:47:48 < Tectu> aah
2013-06-16T03:47:48 < Tectu> good
2013-06-16T03:48:06 < Tectu> something less to worry about
2013-06-16T03:48:13 < emeb_mac> ya
2013-06-16T03:48:55 < zyp> same board?
2013-06-16T03:49:40 < Tectu> zyp, on board programmer/debugger
2013-06-16T03:49:57 < zyp> what are you making?
2013-06-16T03:51:06 < Tectu> finalizing the schematics of my signal generator
2013-06-16T03:51:27 < zyp> you're including a programmer?
2013-06-16T03:51:33 < zyp> are you gonna reprogram it that much?
2013-06-16T03:51:37 < qyx_> http://i.imgur.com/O1TWTgT.jpg
2013-06-16T03:51:38 < qyx_> \o/
2013-06-16T03:52:30 < emeb_mac> wut iz it?
2013-06-16T03:52:45 < qyx_> finally working, lcd + rfid reader to show account credit remotely from db
2013-06-16T03:53:12 < zyp> what kind of rfid reader? where were you when I were asking about nfc? :p
2013-06-16T03:53:45 < dongs> sup dongs
2013-06-16T03:53:47 < qyx_> don't actually know, they are using some expensive readers in whole company for their employer's cards
2013-06-16T03:54:07 < qyx_> elatec twn3 reader it is
2013-06-16T03:54:23 < Tectu> zyp, na, it just costs like nothing compared to the other stuff
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2013-06-16T03:55:23 < zyp> qyx_, ah, so that's a complete module?
2013-06-16T03:55:37 < qyx_> yep, rs232 output
2013-06-16T03:55:46 < zyp> which gives you what?
2013-06-16T03:56:03 < qyx_> it depends on script which is running directly on mcu on that module
2013-06-16T03:56:22 < zyp> ah
2013-06-16T03:56:23 < qyx_> just id for this particular application
2013-06-16T03:56:30 < gxti> oooo
2013-06-16T03:56:39 < zyp> way too highlevel for my purpose
2013-06-16T03:57:14 < dongs> zyp, are you preparing to scam jap train NFC cards on your next visit?
2013-06-16T03:57:30 < qyx_> btw for nfc i was testing SL032 module with mfrc532 from nxp or something similar
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2013-06-16T03:57:48 < qyx_> http://www.stronglink-rfid.com/en/rfid-modules/sl032.html
2013-06-16T03:57:50 < qyx_> this one
2013-06-16T03:59:00 < zyp> I see
2013-06-16T03:59:13 < zyp> I'm interested in multiprotocol stuff, not iso14443a only
2013-06-16T04:00:05 < qyx_> that twn3 is multiprotocol, but afaik they do it using multiple different transponders
2013-06-16T04:00:15 < qyx_> do you want 13.56MHz only?
2013-06-16T04:00:21 < zyp> yep
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2013-06-16T04:01:16 < zyp> http://www.ti.com/product/trf7970a <- I find this interesting
2013-06-16T04:02:12 < Tectu> okay....   U49, R84, C158 and L46
2013-06-16T04:02:25 < Tectu> lots of stuff here
2013-06-16T04:02:53 < qyx_> zyp: nice
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2013-06-16T04:14:03 < gxti> so far i haven't built anything with a display
2013-06-16T04:22:45 < qyx_> in most cases this work is underestimated because people don't see any output from devices
2013-06-16T04:22:59 < qyx_> and leds and lights and colors and special effects
2013-06-16T04:23:26 < qyx_> display gives you the ability to show your work :P
2013-06-16T04:23:30 < gxti> i do at least have blinky leds, although not on this older project i'm poking at now
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2013-06-16T08:16:41 < R2COM> I demand rage chats
2013-06-16T08:19:11 < emeb_mac> RAGE!!11!ELEVENTY!
2013-06-16T08:19:16 < emeb_mac> how's that?
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2013-06-16T08:54:46 < baird> I could chats about ex-girlfriends... (pregnant, single, unemployed, psycho ex-girlfriends...)
2013-06-16T08:56:05 < baird> omg, art in my closet. http://i.imgur.com/FJZCCYr.jpg .. I must twit Marcus Westbury asap.
2013-06-16T09:06:57 < R2COM> baird: char about kangaroos
2013-06-16T09:07:56 < baird> wombats? ... http://kildall.apana.org.au/~cjb/wordpress/archives/304
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2013-06-16T09:18:59 < baird> But otherwise, I used to see Wallabies (small kangaroos..) a lot of the time around where I grew up. Cute little things, but they'll never let you get nearer than 100 metres..
2013-06-16T09:27:29 < baird> ..and they have something like 3 dicks.
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2013-06-16T09:28:35 < R2COM> the right number
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2013-06-16T12:20:32 < Tectu> when I don't need the ADC in an STM32F407, I connect VDDA to 3.3V, right? Where is VREF going? I assume the same?
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2013-06-16T12:33:10 < akaWolf> hm, right. as I recall, you can not connect it to VCC.
2013-06-16T12:33:30 < akaWolf> but I could be wrong. )
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2013-06-16T12:35:42 < Tectu> hmm
2013-06-16T12:36:57 < Tectu> how comes?
2013-06-16T12:37:19 < Tectu> datasheet says:    Note: VREF–, if available (depending on package), must be tied to VSSA.
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2013-06-16T12:38:13 < Tectu> but it is VREF-
2013-06-16T12:38:24 < Tectu> while I have just VREF+ :D
2013-06-16T12:38:52 < Tectu> 1.8 V ≤ VREF+ ≤ VDDA    <---- VCC would be wrong then as well
2013-06-16T12:42:16 < Thorn> http://i.imgur.com/7OzYqoz.jpg
2013-06-16T12:44:27 < akaWolf> Tectu: just connect it to 3.3V )
2013-06-16T12:44:42 < akaWolf> VREF+
2013-06-16T12:45:41 < akaWolf> I think, it should work
2013-06-16T12:46:14 < Tectu> Thorn, what's that?
2013-06-16T12:46:21 < Tectu> akaWolf, at least the datasheet says so :)
2013-06-16T12:49:24 < Thorn> it's my CAN based oven controller
2013-06-16T12:50:05 < Thorn> which will hopefully finally go into service soon
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2013-06-16T12:54:27 < dongs> vref can be at your analog voltage.
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2013-06-16T12:57:47 < Tectu> http://abload.de/img/2013-06-16-135617_191kqq4u.png
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2013-06-16T13:43:51 < Tectu> TheSeven, that oven controller looks quite... impressive
2013-06-16T13:44:29 < Laurenceb__> photo?
2013-06-16T13:44:52 < Tectu> <Thorn> http://i.imgur.com/7OzYqoz.jpg
2013-06-16T13:45:03 < Tectu> wrong hilight...
2013-06-16T13:45:12 < Laurenceb__> wtf
2013-06-16T13:45:31 < dongs> thats what i thought
2013-06-16T13:45:37 < Tectu> same here
2013-06-16T13:46:00 < dongs> needs moar stm
2013-06-16T13:47:31 < Thorn> only one stm in there
2013-06-16T13:47:49 < Thorn> the rest are lpc11c22
2013-06-16T13:47:49 < Tectu> Thorn, how big is that oven
2013-06-16T13:48:00 < dongs> over 9000 m^2
2013-06-16T13:48:07 < Thorn> fits a few people
2013-06-16T13:48:13 < Thorn> 3 in total
2013-06-16T13:49:24 < Laurenceb__> teehee
2013-06-16T13:50:39 < Tectu> Thorn, what's your dayjob? Bakery?
2013-06-16T13:51:01 < Thorn> wat.
2013-06-16T13:51:07 < Laurenceb__> concentration camp guard
2013-06-16T13:55:19 < Tectu> Thorn, where do you work that you need that kind of oven
2013-06-16T13:55:35 < Thorn> it's for a customer
2013-06-16T13:59:00 < Thorn> the customer has been too poor to buy actual ovens so the project has been delayed lol
2013-06-16T13:59:36 < Tectu> good, more time to fix bugs
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2013-06-16T14:15:15 < Thorn> need to finally add lpc17xx support to BMP. btw, does it support stm32f3 already?
2013-06-16T14:15:36 < zyp> yes
2013-06-16T14:15:46 < Thorn> good
2013-06-16T14:18:37 < zyp> I think I added the support… it's using the same flash interface as f1, so it was all just about adding the IDs to the probe func
2013-06-16T14:19:34 < Thorn> someone needs to update README
2013-06-16T14:22:08 <+Steffanx> For sure Thorn :P
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2013-06-16T14:57:36 < karlp> baird: postie story for you from a friend, "got a flat tyre on my postie bike this arvo up some dirt road about fifteen kays out of coolum in the bush. had to stache it there and start walking home just before dark cause had no phone on me. was hitching a ride when three drunken girls headed home from a bra party picked me up, poured me a glass of pink champagne as we drove and dropped me to my door. thanx heaps ladies ! both bike and rider are now saf
2013-06-16T15:01:54 < baird> Happens all the time. Seriously. (The two german schoolies at Marla..)
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2013-06-16T15:05:46 < Laurenceb__> oh nice
2013-06-16T15:05:58 < Laurenceb__> gedit latex plugin has zoom view now
2013-06-16T15:06:02  * Laurenceb__ fapfapfap
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2013-06-16T17:00:21 < Thorn> are there many fixed wing uav controllers out there?
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2013-06-16T18:40:09 < Tectu> is there any document talking about the max. length of an FSMC interface?
2013-06-16T18:40:13 < Tectu> length as in physical track length
2013-06-16T18:40:18 < Tectu> I'd have 80mm here
2013-06-16T18:40:27 < Tectu> tracks are parallel and nearly the same length
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2013-06-16T19:10:11 < BJfreeman> my guess is you can use buffers to extend it
2013-06-16T19:11:03 < BJfreeman> would have to look atthe data sheet for how many circuits the cpu drivers can handle
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2013-06-16T20:18:11 < zyp> 80mm is probably no problem
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2013-06-16T20:26:39 < emeb_mac> trace length probably depends a lot on the bus speed settings too, as well as the loading / termination conditions.
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2013-06-16T20:28:53 < zyp> yep
2013-06-16T20:30:05 < emeb_mac> I've worked on a board with FSMC interface to PSRAM - didn't have any huge issues. Trace lengths probably about 5 - 8 cm.
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2013-06-16T20:33:46 < Tectu> hmm
2013-06-16T20:33:59 < Tectu> well, I have some SRAM and an LCD connected to it
2013-06-16T20:34:06 < Tectu> the SRAM is like 5cm away, the LCD 8
2013-06-16T20:34:25 < emeb_mac> should be fine
2013-06-16T20:34:34 < emeb_mac> if not, just add wait states. :)
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2013-06-16T20:37:13 < Tectu> :D
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2013-06-16T21:46:12 < karlp> so, uh, any suggestions on how to resolve two external libraries both having a public function called "timer_reset" ?
2013-06-16T21:46:22 < karlp> c++ namespaces would be awesome here. :(
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2013-06-16T21:47:23 < Thorn> do you need both functions?
2013-06-16T21:47:36 < karlp> unfortunately.
2013-06-16T21:47:53 < karlp> I can work around one of them, but I'm curious how this is solved in general
2013-06-16T21:49:33 < karlp> urh, I can't just not use one of them, Ihave to remove it from one of them :|
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2013-06-16T21:51:05 < Thorn> maybe something like this (but it's best to rename in source code) http://permalink.gmane.org/gmane.comp.gcc.help/41729
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2013-06-16T21:57:58  * karlp hacks a local branch of libopencm3 instead.
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2013-06-16T23:27:28 < ossifrage> hmm, I can't seem to get the LSE to turn on and the lseon bit seems to magically turn off on its own
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2013-06-16T23:39:49 < ossifrage> doh, helps to read the manual, you need to set pwr_cr.dbp to enable access to bdcr
2013-06-16T23:44:13 < karlp> dongs et al, do you hav ea link to those bee shaped micro quad copters?
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2013-06-17T00:04:51 < Tectu> bee shaped micro quad copters? uhm...
2013-06-17T00:05:08 < Tectu> that reminds me of the guy who build a quad copter out of his stuffed cat...
2013-06-17T00:05:25 < Ranewen> Tectu, it looked nice
2013-06-17T00:05:25 < Tectu> http://www.geekosystem.com/orville-cat-quadcopter/
2013-06-17T00:05:40 < Tectu> Ranewen, the bees or the cat?
2013-06-17T00:05:47 < Ranewen> Tectu, cat
2013-06-17T00:06:00 < Tectu> Ranewen, it's just somehow feeling wrong
2013-06-17T00:06:18 < Tectu> Ranewen, cats are not meant to fly
2013-06-17T00:06:28 < Tectu> otherwise they would when they're still alive
2013-06-17T00:06:30 < Ranewen> Tectu, my cat fights with butterflies
2013-06-17T00:06:52 < Ranewen> Tectu, just recently he realised he cant quite get them
2013-06-17T00:07:01 < Tectu> stupid cat :)
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2013-06-17T00:11:07 < karlp> well, bee wsn't the important bit, they were little tiny quads, with controllers, for ~25-30 usd.
2013-06-17T00:14:04 < karlp> wasn't there some romanian here?
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2013-06-17T00:16:09 < Tectu> karlp, please give me the link to those quads in a hilight once you got them
2013-06-17T00:16:11 < Tectu> I'm leaving now, cu
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2013-06-17T00:17:00 < karlp> Tectu: no, just read the logs like anyone else :)
2013-06-17T00:17:08 < karlp> (I will try and rememeber)
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2013-06-17T00:46:58 <+Steffanx> karlp, there as a romanian here.. izua
2013-06-17T00:47:40 <+Steffanx> *was
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2013-06-17T00:48:58 < karlp> ahh,
2013-06-17T00:49:12 < karlp> was just watching the end of iceland romania on tv
2013-06-17T00:49:40 <+Steffanx> I heard izua got his CS degree and works as a mason nowadays :S
2013-06-17T00:51:06 < Thorn> at a lodge?
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2013-06-17T00:52:56 <+Steffanx> My source didn't me more than this
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2013-06-17T00:56:59 < emeb_mac> I'm a doctor, not a bricklayer.
2013-06-17T00:58:49 < zyp> 23:11:07 < karlp> well, bee wsn't the important bit, they were little tiny quads, with controllers, for ~25-30 usd.
2013-06-17T00:58:52 < zyp> crazyflie
2013-06-17T00:59:15 <+Steffanx> crazyflie is like ~125e ..
2013-06-17T00:59:42 <+Steffanx> *179$
2013-06-17T01:00:07 < zyp> oh
2013-06-17T01:00:46 <+Steffanx> Seeed sells those nowadays ( but you probably new that )
2013-06-17T01:01:17 < zyp> I did, but I don't care much for the price of anything I'm not gonna buy
2013-06-17T01:01:21 < zyp> I thought it were cheaper
2013-06-17T01:01:46 <+Steffanx> I wonder how many actually but it for that price
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2013-06-17T01:50:02 < dongs> http://www.bbc.co.uk/news/world-asia-22528431 lol
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2013-06-17T01:50:16 < dongs> karlp: http://www.myrcmart.com/hj-toys-v997-mini-pet-4ch-24ghz-6axis-rtf-quadcopter-bee-p-4854.html
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2013-06-17T01:52:43 < Thorn> "left two stewardesses in their seats to operate the plane in their absence. One of the stewardesses accidentally turned off the auto-pilot..." <- not as cool as Aeroflot 593
2013-06-17T01:55:00 < dongs> haha
2013-06-17T01:56:17 < gxti> "Cockpit voice and flight data recorders revealed the presence of the pilot's 12-year-old daughter and 16-year-old son on the flight deck." "There were no survivors."
2013-06-17T01:56:30 < dongs> ya
2013-06-17T01:56:32 < dongs> lol'd
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2013-06-17T02:01:05 < Laurenceb_> putting the win into darwin
2013-06-17T02:02:48 < gxti> pilots don't qualify for darwin awards because when they fuck up a lot of people die with them
2013-06-17T02:03:10 < gxti> unless they're solo obviously :p
2013-06-17T02:04:44 < emeb_mac> mini-pet is cute & cheap, but shipping isn't.  ~$18 for slow-boat.
2013-06-17T02:06:34 < emeb_mac> heh - "We refuse to do business with a perfectionist. Please do not place your order."
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2013-06-17T02:12:51 < upgrdman> im reading out a signed 16bit number via i2c, one byte at a time. how do i assign it to a int16_t without c trying to interpret the bytes? |= doesn't seem to keep c out of it
2013-06-17T02:13:32 < emeb_mac> suppose you could use a union
2013-06-17T02:13:51 < upgrdman> ya. just seems like there should be a better way
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2013-06-17T02:13:59 < dongs> emeb_mac: that box is pretty big
2013-06-17T02:14:05 < dongs> 24.99includes everything, transmitter and shit
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2013-06-17T02:14:39 < emeb_mac> but what's wrong with int foo = upper_byte <<8 | lower_byte; ?
2013-06-17T02:14:51 < dongs> upgrdman: use __REV16
2013-06-17T02:14:54 < dongs> intrinsic
2013-06-17T02:15:03 < dongs> since you're using a trash compiler
2013-06-17T02:15:09 < dongs> that cant autogenerate it
2013-06-17T02:15:16 < dongs> keil does REV16 out of foo<<8|bar
2013-06-17T02:15:20 < dongs> gcc doesnt
2013-06-17T02:16:24 < Thorn> http://ideone.com/PQd2G7
2013-06-17T02:16:48 < dongs> ?
2013-06-17T02:18:40 < Thorn> it does what you'd expect
2013-06-17T02:19:12 < Thorn> 0x55 = 85, 32768 - 85 = 32683
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2013-06-17T02:21:30 < emeb_mac> Thorn: don't think dongs meant it wouldn't work, but that it wouldn't do it efficiently with the simple ARM instruction.
2013-06-17T02:21:42 < upgrdman> i think it was cause i was |= the int16 one byte at a time. nm
2013-06-17T02:22:18 < Thorn> my point is no unions are needed
2013-06-17T02:24:24 < Thorn> http://ideone.com/nIDLAi
2013-06-17T02:24:51 < dongs> yeah what emeb_mac said
2013-06-17T02:24:59 < dongs> my suggestion is still valid
2013-06-17T02:25:05 < dongs> just use __REV16() intrinsic from cmsis
2013-06-17T02:25:05 < Thorn> works with |= too
2013-06-17T02:25:28 < dongs> pass it uint8 buffer as uint16 and cast to int16 result
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2013-06-17T02:31:22 < Thorn> compiled using latest gnu-arm-embedded with -O3. it did orr.w   r1, r1, r0, lsl #8 ; sxth  r1, r1 . looks as good to me
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2013-06-17T02:36:28 < emeb_mac> ya - confirmed here too.
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2013-06-17T03:11:27 < dongs> < Thorn> compiled using latest gnu-arm-embedded with -O3. it did orr.w   r1, r1, r0, lsl #8 ; sxth  r1, r1 . looks as good to
2013-06-17T03:11:30 < dongs>                me
2013-06-17T03:18:10 < zyp> wtf, why do you worry about doing that efficiently?
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2013-06-17T03:18:45 < dongs> zyp, 1 insn vs liek 5
2013-06-17T03:18:47 < zyp> stop wasting time and making the code less readable by optimizing shit that doesn't matter
2013-06-17T03:18:57 < dongs> repeated * 3000 per second
2013-06-17T03:19:06 < dongs> zyp: i dont, im talking about poor gcc retards.
2013-06-17T03:19:10 < dongs> armcc does it for me already.
2013-06-17T03:19:20 < zyp> what part of gcc is poor?
2013-06-17T03:19:28 < dongs> that it doesnt emit rev16 on foo<<8|bar
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2013-06-17T03:19:38 < zyp> why would it?
2013-06-17T03:19:41 < dongs> ...
2013-06-17T03:20:10 < dongs> why WOUDLNT it
2013-06-17T03:21:24 < zyp> rev16 swaps two bytes, so you're assuming it's stored one by one in memory
2013-06-17T03:21:36 < zyp> is that assumption true?
2013-06-17T03:21:47 < dongs> right
2013-06-17T03:21:53 < dongs> this is used when you read a buffer from i2c
2013-06-17T03:21:58 < dongs> and byteswap it into int16's
2013-06-17T03:22:00 < dongs> i.e. gyro data etc.
2013-06-17T03:22:10 < upgrdman> fwiw: my problem was totally unrelated. i fucked up my i2c logic. its fixed and works fine now
2013-06-17T03:22:22 < dongs> that deosnt mean we cant continbue arguing about it
2013-06-17T03:22:29 < upgrdman> sure :) continue.
2013-06-17T03:24:03 < upgrdman> so this stm gyro is my first i2c device. it is common to read all i2c devices by: write one byte (register, and MSB=1 if auto-increment), then restart and read one byte if not-auto-incr, or read x bytes if auto-incr?
2013-06-17T03:24:29 < dongs> http://bcas.tv/paste/results/JqeyOk76.html
2013-06-17T03:24:32 < dongs> i.e. this ^ zyp beep
2013-06-17T03:24:40 < dongs> gcc would generate o9k instructions for this
2013-06-17T03:25:10 < upgrdman> im tempted to clean up my code by writing a i2c_read_bytes(regAddress, bytesToRead)
2013-06-17T03:32:52 < dongs> zyp, is it failing.
2013-06-17T03:32:59 < dongs> since youre quiet i assume yes.
2013-06-17T03:34:12 < dongs> failing like lunix on desktop
2013-06-17T03:38:41 < dongs> no mile-long command lines were harmed during making of this test
2013-06-17T03:53:47 < zyp> you're right, current GAE won't emit rev16
2013-06-17T03:54:04 < dongs> ^_^
2013-06-17T03:54:15 < zyp> it were apparently added to gcc trunk a few months ago, but has not been merged to the arm embedded branch yet, which GAE is based on
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2013-06-17T03:57:46 < zyp> either way it seems like wasted effort cluttering up the code with rev16 intrinsics when the difference in speed doesn't really matter, esp. when the problem will disappear by itself once code is recompiled with a future gcc
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2013-06-17T03:58:16 < dongs> zyp, pfft.
2013-06-17T03:58:33 < dongs> zyp, theres one more problem wiht __REV16 intrinsic
2013-06-17T03:58:36 < dongs> for some reason it doesnt inline
2013-06-17T03:58:41 < dongs> on armcc at least anyway.
2013-06-17T03:58:48 < dongs> i think on gcc too,, it does BL __REV16
2013-06-17T03:58:56 < dongs> weird
2013-06-17T03:59:01 < dongs> but crossworks has a __Rev16 #define
2013-06-17T03:59:03 < dongs> which ddoes inline
2013-06-17T04:01:22 < upgrdman> yay! my gyro works :) http://www.youtube.com/watch?v=luHjawUbq9o
2013-06-17T04:01:50 < zyp> hmm, __builtin_bswap16 doesn't seem to inline either
2013-06-17T04:03:32 < dongs> http://bcas.tv/paste/results/k7Qc2027.html
2013-06-17T04:03:36 < dongs> this is what cwarm h as
2013-06-17T04:07:46 < zyp> http://paste.jvnv.net/view/th1Pr <- something like this?
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2013-06-17T04:09:56 < zyp> marking the asm as volatile like in your paste is kinda dumb, it only serves to force the instruction to be emitted even if the result is not used
2013-06-17T04:10:16 < zyp> oh, and I see I probably forgot about clobbering flags :p
2013-06-17T04:11:16 < zyp> doesn't make any difference in this case though
2013-06-17T04:17:55 < dongs> hmm
2013-06-17T04:18:08 < dongs> oh, i see
2013-06-17T04:18:10 < dongs> you got several reads
2013-06-17T04:18:15 < dongs> but yeah that looks prety good
2013-06-17T04:18:50 < zyp> well, of course it looks good, it's inline asm
2013-06-17T04:19:19 < dongs> hmm, but i think it does an extra load
2013-06-17T04:19:20 < dongs> yeah
2013-06-17T04:19:23 < dongs> youre still failing it
2013-06-17T04:19:33 < zyp> extra load where?
2013-06-17T04:19:51 < dongs> my paste rev16 is on same register
2013-06-17T04:19:59 < dongs> hm, but i guess its same anyway
2013-06-17T04:23:17 < zyp> that's all up to the register allocator, it's allowed to do either
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2013-06-17T08:44:00 < upgrdman_> reading the interrupt chapter of the f0 ref manual. you can mask/unmask interrupts and events. whats the difference between an interrupt and an event?
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2013-06-17T11:21:02 < PaulFertser> gsmcmullin: hi :) pinging you just in case, to remind about the srst patches; it's not a pressing issue, of course.
2013-06-17T11:26:14 < zyp> what do the srst patches do?
2013-06-17T11:35:34 < kuldeepdhaka> hello!
2013-06-17T11:35:42 < kuldeepdhaka> help! http://pastebin.com/E690KnJf  (linker error)
2013-06-17T11:38:36 < jpa-> so you are trying to use newlib, but you don't have the necessary stubs?
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2013-06-17T11:39:12 < zyp> no, that's not the errors
2013-06-17T11:39:29 < jpa-> i was looking at these at the end: signalr.c:(.text._getpid_r+0x0): undefined reference to `_getpid'
2013-06-17T11:39:33 < zyp> he's linking with --print-gc-sections
2013-06-17T11:40:02 < zyp> I'm more curious about undefined reference to `vtable for __cxxabiv1::__class_type_info'
2013-06-17T11:40:14 < zyp> kuldeepdhaka, are you using C++?
2013-06-17T11:40:31 < zyp> ah, he is
2013-06-17T11:40:34 < jpa-> sounds like c++ with rtti but not according linker script stuff
2013-06-17T11:40:39 < jpa-> disable rtti :)
2013-06-17T11:40:41 < zyp> yep
2013-06-17T11:40:43 < kuldeepdhaka> zyp, yes (porting ni code)
2013-06-17T11:40:55 -!- Thorn [~Thorn@unaffiliated/thorn] has quit [Ping timeout: 260 seconds]
2013-06-17T11:41:10 < zyp> kuldeepdhaka, use -fno-exceptions -fno-rtti
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2013-06-17T11:42:47 < kuldeepdhaka> zyp, got it :)
2013-06-17T11:44:02 < jpa-> (and then get some stubs :)
2013-06-17T11:45:19 < PaulFertser> zyp: srst patches allow to connect to an uncooperating target by pulling srst low during swdp scan and reset vector breakpoint setting.
2013-06-17T11:45:53 < zyp> jpa-, doesn't -lnosys cover that?
2013-06-17T11:45:59 < Thorn> sounds like a solution to a problem I regularly have with bmp
2013-06-17T11:46:10 < zyp> PaulFertser, unconditionally?
2013-06-17T11:46:16 < PaulFertser> Thorn: the patches are there on the mailing list
2013-06-17T11:46:20 < PaulFertser> zyp: conditionally, of course.
2013-06-17T11:46:30 < Thorn> okay thanks will try them
2013-06-17T11:46:49 < PaulFertser> Thorn: but you can also set the special debug register in your own application to leave debugging units powered during sleep modes.
2013-06-17T11:46:58 < zyp> PaulFertser, conditionally how then? :)
2013-06-17T11:47:35 < Thorn> it's not related to sleep nodes in my case
2013-06-17T11:47:41 < Thorn> *modes
2013-06-17T11:47:41 < PaulFertser> zyp: if you do "mon connect_srst enable" and not do "mon connect_srst somethingelse" after that :)
2013-06-17T11:47:52 < PaulFertser> Thorn: what else can prevent BMP from connecting?
2013-06-17T11:47:55 < zyp> ah, great
2013-06-17T11:48:37 < zyp> I've played with targets that disables the debug port when srst is asserted
2013-06-17T11:49:11 < PaulFertser> According to my understanding of armv7-m manual all of them shouldn't do that.
2013-06-17T11:49:25 < zyp> not to mention being able to connect without destroying state is important
2013-06-17T11:49:33 < PaulFertser> Indeed
2013-06-17T11:50:07 < Thorn> I have some boards where ground isn't connected in debug connectors. when a swd error happens bmp reports SIGLOST and sometimes leaves the target in a weird state, the only way out of which is a power cycle
2013-06-17T11:50:46 < Thorn> i.e. it can't reconnect, swdp_scan reports no targets
2013-06-17T11:51:14 < Thorn> I know I need to fix the boards lol but it's an interesting test case nonetheless
2013-06-17T11:51:29 < PaulFertser> Yep, worth a try
2013-06-17T11:52:17 < Thorn> and in general BMP error reporting (and perhaps recovery) could be greatly improved
2013-06-17T11:53:39 < Thorn> I sometimes get a SIGLOST after a 'c' in gdb especially if left in that mode for hours
2013-06-17T11:54:10 < Thorn> that makes catching intermittent bugs much harder
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2013-06-17T11:56:05 < Thorn> the IAP interface in lpc17xx seems identical to lpc11xx but I can't find out how to probe for lpc17xx. it doesn't appear to have a memory-mapped device ID register unlike lpc11xx
2013-06-17T11:57:11 < PaulFertser> Thorn: you can try to add another ground wire from board to board, even if it's not present on debug connector itself, still might help.
2013-06-17T11:57:36 < Thorn> that's what I did. it was almost unusable without it
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2013-06-17T11:58:19 < PaulFertser> Thorn: try adding another one :) BMP bitbangs fast, some people reported adding several lines helps.
2013-06-17T11:58:20 < Thorn> still I've seen failures (maybe my jumper wire connectors aren't perfect)
2013-06-17T11:59:03 < Thorn> the 10-pin cortex debug cable has 3 gnd wires, that would help a lot lol
2013-06-17T11:59:59 < Thorn> but adding optional wait states to bmp bitbanging would be great too
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2013-06-17T12:16:17 < Laurenceb_> lol america
2013-06-17T12:16:36 < Laurenceb_>  "we recommend catching a limousine to our offices"
2013-06-17T12:17:38  * Laurenceb_ puts on his pimp suit
2013-06-17T12:18:20 < Laurenceb_> http://s7d4.scene7.com/is/image/CostumeSupercenter/59473?$mediumlarge$
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2013-06-17T12:23:06 < timemob> http://developer.sonymobile.com/services/open-smartwatch-project/smartwatch-hacker-guide/
2013-06-17T12:23:11 < timemob> Lol
2013-06-17T12:23:36 < timemob> Stm32f2
2013-06-17T12:23:42 < Laurenceb_> yup
2013-06-17T12:23:51 < Laurenceb_> already running chibios/gfx
2013-06-17T12:26:01 < timemob> Oh ok.
2013-06-17T12:26:11 < timemob> So useless then
2013-06-17T12:26:21 < Laurenceb_> lol
2013-06-17T12:26:53 < Laurenceb_> think im going to dress as a pimp and catch a limo 4 the lolz
2013-06-17T12:33:20 -!- PT_Dreamer [~quassel@109.48.7.12] has joined ##stm32
2013-06-17T12:33:51 < Laurenceb_> http://www.youtube.com/watch?v=BFq_shwOwDk
2013-06-17T12:35:37 < timemob> I'll buy it when it's 30
2013-06-17T12:35:49 < timemob> Not sure what I'd use it for
2013-06-17T12:36:40 < timemob> Maybe as a watch? But I suspect it already does that
2013-06-17T12:38:22 < Laurenceb_> mn800 is same thing cheaper
2013-06-17T12:38:26 < Laurenceb_> well - with F1
2013-06-17T12:38:51 < Laurenceb_> i could use it as a lunix terminal
2013-06-17T12:42:19 < Laurenceb_> http://www.ebay.com/itm/Sony-Ericsson-MN800-LiveView-Bluetooth-Remote-Control-Android-Phone-Smart-Watch-/251137874727?pt=US_Other_Cell_Phone_Accessories&hash=item3a78fbdb27
2013-06-17T12:42:43 < zyp> ah, that's the shit I bought once
2013-06-17T12:43:28 < zyp> haven't seen it for a couple of years, not sure where I put it when I moved
2013-06-17T12:43:36 < zyp> can I do anything fun with it?
2013-06-17T12:43:43 < Laurenceb_> theres chibios GFX drivers :P
2013-06-17T12:43:51 < zyp> fun enough to be worth digging it up from whatever box I put it in
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2013-06-17T12:44:43 < Laurenceb_> SWD is broken out on the main board but you'd have to take the case off
2013-06-17T12:44:57 < Laurenceb_> it runs DFU ok through the usb aiui
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2013-06-17T12:52:47 < dongs> hmm
2013-06-17T12:52:52 < dongs> 90 bucks + 8 shipping from HK
2013-06-17T12:52:54 < dongs> not worth it
2013-06-17T12:52:58 < dongs> whats mn800
2013-06-17T12:53:12 < dongs> oh thats a newer zyp secretproj?
2013-06-17T12:53:28 < dongs> 2.9 out of 5 stars
2013-06-17T12:53:29 < dongs> haha
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2013-06-17T13:10:34 < trepidaciousMBR> Laurenceb: Ah I was wondering about SWD, would be a bit of a pain without it
2013-06-17T13:10:45 < trepidaciousMBR> Does the smartwatch have SWD as well?
2013-06-17T13:17:11 <+Steffanx> Heh, nice marketing sony.. how to get rid of a gadget no one ever wanted to buy
2013-06-17T13:17:27 <+Steffanx> *sony ericsson
2013-06-17T13:18:56 < trepidaciousMBR> I nearly bought one, you can all mock me :)
2013-06-17T13:19:03 < dongs> i never even heard of it
2013-06-17T13:19:10 < trepidaciousMBR> I'm definitely getting one now they've opened it up
2013-06-17T13:19:10 < dongs> maybe you could solder F4 into it
2013-06-17T13:19:17 <+Steffanx> Before of after the hack contest announcement trepidaciousMBR?
2013-06-17T13:19:21 < trepidaciousMBR> Probably... hmm...
2013-06-17T13:19:42 < trepidaciousMBR> Steffanx: Before, a few months ago I saw one in a phone shop, I didn't buy it because Sony software generally sucks :)
2013-06-17T13:19:48 < dongs> uh
2013-06-17T13:19:51 < dongs> RG is WLCSP lol
2013-06-17T13:19:53 < dongs> oops
2013-06-17T13:19:57 <+Steffanx> Awh
2013-06-17T13:20:12 < trepidaciousMBR> Ah yeah, there isn't a corresponding F4
2013-06-17T13:20:19 < dongs> hmm.. according to arrow anyway
2013-06-17T13:20:22 < dongs> wonder if I shoudl trust htem
2013-06-17T13:20:29 < dongs> the're quite spammy lately
2013-06-17T13:20:32 < dongs> lets see official site
2013-06-17T13:20:36 < trepidaciousMBR> Yeah I checked the datasheets, I think there are more pins on the corresponding F4
2013-06-17T13:20:40 < trepidaciousMBR> I could be wrong
2013-06-17T13:22:39 < dongs> ya RGY6 is WLCSP
2013-06-17T13:22:44 < dongs> RGT6 is TQFP64
2013-06-17T13:23:33 < dongs> 40xRG only comes in 64pin
2013-06-17T13:23:33 < zyp> R only means 64pin, not what kind of 64-pin package it is
2013-06-17T13:23:44 < dongs> oh is it
2013-06-17T13:23:51 < zyp> yes, the first letter is pin count
2013-06-17T13:23:55 < dongs> and G?
2013-06-17T13:24:02 < zyp> flash size
2013-06-17T13:24:11 < zyp> G = 1M IIRC
2013-06-17T13:24:16 < dongs> right
2013-06-17T13:24:31 < dongs> and I guess T is tqfp
2013-06-17T13:24:40 < dongs> was that documented somewhere?
2013-06-17T13:24:42 < dongs> or you just know it
2013-06-17T13:24:48 <+Steffanx> its documented in the datastheet
2013-06-17T13:24:58 < zyp> it's documented in the ordering information section in the datasheet
2013-06-17T13:24:59 <+Steffanx> http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00237391.pdf page 155
2013-06-17T13:25:29 < dongs> more retarded urls from st.com
2013-06-17T13:25:41 < dongs> ya F4 only comes in WLCSP90
2013-06-17T13:32:26 < dongs> has lifx started shipping yet
2013-06-17T13:33:46 <+Steffanx> Is a ks project, so suure
2013-06-17T13:35:25 <+Steffanx> "by July 8th" dongs ..
2013-06-17T13:35:27 < dongs> http://emu.lifx.co/
2013-06-17T13:38:10 < zyp> I hear the bladerf is gonna ship in a week or two
2013-06-17T13:38:14 < PaulFertser> What wifi chip do those bulbs use?
2013-06-17T13:38:21 < zyp> they wanted my addr the other day
2013-06-17T13:38:24 < dongs> PaulFertser: they probably dont know yet
2013-06-17T13:38:34 < dongs> like a typical dickstarter project.
2013-06-17T13:39:55 < PaulFertser> dongs: what would you use if you wanted 802.11g/n support in your microcontroller project?
2013-06-17T13:40:16 < dongs> i duno, i havent looked at that shit much. there was some recent CCxxx stuff from TI that looked interesting.
2013-06-17T13:40:21 < dongs> but thats all i knowl
2013-06-17T13:41:14 <+Steffanx> That new chip from TI look nice, yeah. CC3000 iirc
2013-06-17T13:41:23 < PaulFertser> Hardmac?
2013-06-17T13:42:30 <+Steffanx> Not sure what you mean by that :)
2013-06-17T13:43:15 < PaulFertser> Steffanx: most of the wifi devices you see and use are softmac, i.e. the 802.11 layer is implemented mostly in software.
2013-06-17T13:43:37 <+Steffanx> oh, i dont know about that
2013-06-17T13:43:54 < dongs> 802.dongs
2013-06-17T13:45:42 < PaulFertser> CC3000 must be hardmac (judging by "SimpleLink(TM)"). I'd say every of that "smart bulbs" can possibly be designed on a SoC that would just run Linux, so any modern supported module would work.
2013-06-17T13:46:06 < dongs> haha lunix on a lightbulb
2013-06-17T13:46:20 <+Steffanx> windows would be funnier
2013-06-17T13:46:39 <+Steffanx> incl. .net
2013-06-17T13:47:01 <+Steffanx> and iis for a web interface
2013-06-17T13:48:57 < PaulFertser> dongs: have you seen that shit: http://en.wikipedia.org/wiki/Eye-Fi ? Each of the cards runs Linux.
2013-06-17T13:50:51 <+Steffanx> Really?!
2013-06-17T13:51:15 < dongs> jesus i fucking hope youre joking
2013-06-17T13:52:44 < PaulFertser> Let me find the site of the SoC's manufacturer... k2 card or some shit...
2013-06-17T13:54:08 < PaulFertser> They do not use ar6001's risc core for anything but wifi, so they have the other core emulating SD card interface.
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2013-06-17T13:55:53 < dongs> id be surprised if tehres something more than a tarduino pro mini on those cards.
2013-06-17T13:56:45 < PaulFertser> dongs: they're the size of a regular SD card, no arduino can fit that.
2013-06-17T13:58:03 <+Steffanx> arduino comes in tqfp as well
2013-06-17T13:58:26 < dongs> i wanna get paid to do a tarduno project with 2560 in bga
2013-06-17T13:58:44 <+Steffanx> Ill pay you
2013-06-17T13:58:51 <+Steffanx> $10 ?
2013-06-17T13:58:52 < dongs> you cant afford me
2013-06-17T13:59:09 <+Steffanx> You expect to work for more than one day on it?
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2013-06-17T14:04:50 < PaulFertser> dongs: http://www.keyasic.com/keyasic_sub.php?type=information&inid=24 wifi sd card reference platform
2013-06-17T14:10:16 <+Steffanx> heh
2013-06-17T14:30:42 < zyp> dongs, what did you say the other day? did you have a good price for 64pin f303?
2013-06-17T14:30:47 < zyp> good as in better than digikey
2013-06-17T14:31:11 < dongs> yeah
2013-06-17T14:31:24 < dongs> around 5-6 bucks i think somewehre around taht
2013-06-17T14:31:28 < dongs> i think closer to 5 i forget
2013-06-17T14:31:35 < dongs> we'll be using them in some led contorller shit
2013-06-17T14:31:41 < dongs> so will probly have trays starting next month+
2013-06-17T14:32:11 < zyp> that's f303rc?
2013-06-17T14:32:14 < dongs> RB
2013-06-17T14:32:22 < dongs> (we're cheap fucks)
2013-06-17T14:32:29 < zyp> ah, digikey seems to only stock rc
2013-06-17T14:32:31 < dongs> yes
2013-06-17T14:32:41 < dongs> im wondering if RB-RC is same as 64>128k F103
2013-06-17T14:32:45 < dongs> where flash is actually there
2013-06-17T14:32:49 < zyp> but my shit will easily fit in rb
2013-06-17T14:32:49 < dongs> just not reflectd by flash_size register
2013-06-17T14:39:17  * Steffanx wonder if some here are trying to zlog ##stm32 high in the results of google on the word 'shit')  :P
2013-06-17T14:40:14 <+Steffanx> oh, nevermind. You already succeeded
2013-06-17T14:40:49 < GargantuaSauce> search results are personal eh
2013-06-17T14:41:02 <+Steffanx> Try it yourself: stm32 shit
2013-06-17T14:41:07 < GargantuaSauce> ie if you search for zlog's logs a bunch and then for shit, you'll get this
2013-06-17T14:41:53 < GargantuaSauce> <Robint91> I claim the throne of ##stm32-crap
2013-06-17T14:52:08 < karlp> PaulFertser: the lifx have cc2538 for 802.15.4, can't remember for the wifi, but I'd bet on TI too.
2013-06-17T14:52:28 < PaulFertser> karlp: thanks :)
2013-06-17T14:53:55 < karlp> they have friends at TI.
2013-06-17T15:04:16 < gsmcmullin> PaulFertser: Check me.  I thought I committed them long ago.
2013-06-17T15:06:10 < PaulFertser> gsmcmullin: those to pull srst? Oh. I thought an additional discussion is needed wrt to the issues uncovered.
2013-06-17T15:14:30 < Laurenceb> http://www.b3ta.com/board/10973039
2013-06-17T15:17:54 -!- gsmcmullin [~gareth@122-62-149-197.jetstream.xtra.co.nz] has quit [Ping timeout: 240 seconds]
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2013-06-17T15:20:48 < gsmcmullin> PaulFertser: Yeah, sorry.  I merged the srst stuff, but forgot about the timeout when sleeping.
2013-06-17T15:20:58 < gsmcmullin> Did I miss something else too?
2013-06-17T15:21:17 < PaulFertser> gsmcmullin: np, no, i meant only that last one regarding timewait.
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2013-06-17T15:21:48 < gsmcmullin> I'll be around tomorrow to discuss if you like, but off for now.  Cheers.
2013-06-17T15:23:03 < PaulFertser> gsmcmullin: see you :)
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2013-06-17T16:15:09 < dongs> zyp
2013-06-17T16:15:15 < dongs> what C standard is 0bxxxx notation part of?
2013-06-17T16:15:19 -!- barthess [~barthess@86.57.155.106] has quit [Ping timeout: 260 seconds]
2013-06-17T16:16:15 < gxti> it's not standard but too convenient to pass up :p
2013-06-17T16:16:18 -!- barthess [~barthess@86.57.155.106] has joined ##stm32
2013-06-17T16:18:16 < PaulFertser> They say it's gcc extension but clang supports that as well.
2013-06-17T16:18:41 < gxti> i guess that covers everything i'll ever care about hurrr
2013-06-17T16:19:48 -!- BrainDamage [~BrainDama@dynamic-adsl-94-36-231-105.clienti.tiscali.it] has joined ##stm32
2013-06-17T16:23:22 < PaulFertser> Another way: http://www.boost.org/doc/libs/1_42_0/libs/utility/utility.htm#BOOST_BINARY
2013-06-17T16:23:29 < PaulFertser> Works in C too
2013-06-17T16:25:23 < gxti> fascinating. and gross.
2013-06-17T16:26:45 < gxti> at least it's permissively licensed
2013-06-17T16:29:58 < trepidaciousMBR> Every binary number up to 255 as a define for the win
2013-06-17T16:35:12 < dongs> http://invensense.com/ lol
2013-06-17T16:35:28 < Thorn> that's how ardweeno does it iinm
2013-06-17T16:42:37 < Laurenceb> haha wtf
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2013-06-17T17:44:18 < Sector_0> does anyone know why some of the stm32f4 GPIO pins are always high?
2013-06-17T17:45:01 < Sector_0> I tried setting up the low half of port B (GPIO0-GPIO7) as an input port
2013-06-17T17:45:45 < Sector_0> and when I read the port without anything conected instead of getting 0, I got 68
2013-06-17T17:46:15 < Thorn> wave your hand over it
2013-06-17T17:47:01 < dongs> Sector_0: this is on f4disco?
2013-06-17T17:47:20 < Sector_0> dongs: yes
2013-06-17T17:47:23 < dongs> well
2013-06-17T17:47:28 < dongs> you should check the pdf
2013-06-17T17:47:35 < dongs> theres stuff hooked up to pins
2013-06-17T17:47:41 < dongs> some peripherals and shit
2013-06-17T17:47:51 < dongs> it has a nice table
2013-06-17T17:47:56 < dongs> which pins are used for what / which are free
2013-06-17T17:51:50 < Thorn> looks like you're right. 68 = 64+4, i.e. PB2 & PB6. PB2 is BOOT1 with a 10K pullup and PB6 has a 4.7 K pullup for some reason
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2013-06-17T17:53:35 < gxti> unless you set the pins specifically to 'input pull-down' they could read anything anyway
2013-06-17T17:53:38 < Sector_0> Thorn: Yea I just noticed and I desoldered SB19 which might permanently pulls BOOT1 up
2013-06-17T17:53:54 < Sector_0> don't get the PB6 though :/
2013-06-17T17:54:07 < Thorn> R33
2013-06-17T17:54:44 < Sector_0> but I even tried with port C and got the same kinda results even though I pull the pins down and the peripherals for those weren't enabled
2013-06-17T17:54:55 < Sector_0> I eventually got away using port E
2013-06-17T17:55:07 < Sector_0> but the behavior still seems a lil weird
2013-06-17T17:55:37 < Thorn> looks like PB6 & PB9 are I2C1 SCL & SDA resp.
2013-06-17T17:58:07 < Sector_0> Thorn: PB6 might be because I'm using USB OTG FS
2013-06-17T17:59:06 < Thorn> it's not used for usb as far as I can see
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2013-06-17T18:01:10 < Sector_0> Thorn: OTG_FS_INTN/
2013-06-17T18:02:50 < Thorn> not used on this board I mean
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2013-06-17T18:18:50 < Laurenceb> http://pastebin.com/3LKQRh6E
2013-06-17T18:18:59 < Laurenceb> farnell 1.3Ah discharge
2013-06-17T18:23:58 < zyp> when using the comparators, do I set the pins in analog input mode?
2013-06-17T18:24:16 < gxti> what else would you use
2013-06-17T18:24:26 < zyp> well, that much seems obvious
2013-06-17T18:24:43 < gxti> unless you wanted pullup/pulldown
2013-06-17T18:24:51 < zyp> but, can I enable pullups on analog inputs?
2013-06-17T18:25:06 < gxti> probably not but i only know fd1
2013-06-17T18:25:13 < zyp> gxti, that's exactly what I want
2013-06-17T18:25:18 < gxti> s/fd1/f1/
2013-06-17T18:25:34 < zyp> this is f3, so it has the new stuff
2013-06-17T18:25:56 < gxti> digital input might work, presumably the comparator would be unaffected
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2013-06-17T18:26:21 < gxti> the downside is that schmitt inputs consume more current when the input is in a middle state, other than that i don't think it really matters
2013-06-17T18:26:44 < gxti> might also have some mild effect on any high-impedance source but you couldn't use those with pullup/pulldown anyway
2013-06-17T18:27:18 < zyp> in this case I'm interfacing with phototransistors pulling down
2013-06-17T18:27:27 < zyp> on a quadrature encoder
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2013-06-17T18:27:53 < zyp> so without pullups I don't get anything
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2013-06-17T18:29:39 < gxti> seems like you might want something stronger anyway
2013-06-17T18:29:56 < zyp> hmm, possibly
2013-06-17T18:30:55 < zyp> I like the fact that PA0 and PA1 can both be used directly for a timer in encoder mode, or through comparators routed to a timer in encoder mode
2013-06-17T18:31:09 < zyp> so I can choose to do either in software
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2013-06-17T18:40:50 < zeropointo> is there a way i can print the last interrupt fired on my cortex-m3?
2013-06-17T18:41:44 < zeropointo> one of them is calling the the default inturrupt handler.
2013-06-17T18:42:01 < zeropointo> a number of them are "unhandeled" so i don't know which
2013-06-17T18:42:15 < trepidaciousMBR> Only enable the interrupts you need?
2013-06-17T18:42:45 < zeropointo> i didn't write this. i just took it over from someone else. so i'm not sure exactly what's going on.
2013-06-17T18:43:45 < zeropointo> i would like to see which was fired so i can track down the source
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2013-06-17T18:45:22 < trepidaciousMBR> Ah right, not sure how to do that
2013-06-17T18:46:27 < trepidaciousMBR> except I guess checking which of the interrupt flags are set?
2013-06-17T18:46:53 <+Steffanx> You can look in some register, but i always forget which one :)
2013-06-17T18:46:56 < zyp> zeropointo, the lower bits in the PSR register
2013-06-17T18:54:32 < zyp> hmm, internal pullups seems to be strong enough
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2013-06-17T18:54:40 < zyp> but not available in analog mode
2013-06-17T18:54:51 < zyp> time to test if comparators work in digital mode then
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2013-06-17T20:56:35 < zyp> in case anybody was wondering, it works
2013-06-17T21:00:53 < jpa-> i wouldn't rely on the internal pull-ups staying the same value
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2013-06-17T21:19:34 < zyp> nah, I'm putting external pullups when I'm doing a board
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2013-06-17T21:30:02 < qyx_> http://i.imgur.com/AltQeDn.jpg
2013-06-17T21:30:15 < qyx_> adapter board for low cost china pir sensors
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2013-06-17T21:48:07 <+Steffanx> usb powered qyx_? :)
2013-06-17T21:48:22 <+Steffanx> Whats the plan? USB power motion sensors?
2013-06-17T21:49:29 <+Steffanx> I could bring up a fancy product people would use that for, but ...
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2013-06-17T22:04:03 < qyx_> Steffanx: sensor for kiosks to cancel screen saver when someone comes near them
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2013-06-17T22:05:38 <+Steffanx> ah, nice :D
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2013-06-17T22:26:12 <+Steffanx> it just acts as a keyboard or mouse i guess qyx_?
2013-06-17T22:30:13 < Ranewen> evening again, here's my problem: i have alot of batteries that were used 24h (and i placed them in my logitech mouse, and the pc software measured 80% capacity left) and i want to measure their capacity... the batteries are these http://www.en.varta-consumer.com/en/Products/Batteries/High-Energy/AA.aspx#AA
2013-06-17T22:30:13 < Ranewen> <eatyourguitar> I dont know what standard leakage is for a 3904
2013-06-17T22:30:41 < Ranewen> dont look at last line (fail copy paste)
2013-06-17T22:31:33 < jpa-> and this relates to stm32 because?
2013-06-17T22:31:53 <+Steffanx> ##electronics :)
2013-06-17T22:31:57 < Ranewen> jpa-, i want to power my stm32
2013-06-17T22:32:01 < Ranewen> with these batteries
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2013-06-17T22:32:15 < Ranewen> or perhaps i could integrate the current with my stm32 and get capacity
2013-06-17T22:32:17 < Ranewen> idk
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2013-06-17T22:49:21 < qyx_> Steffanx: it should, but for now just usb-cdc as i am lazy and chibios has a demo for it
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2013-06-17T22:54:40 < Thorn> omg, LPC ISP programmer in Erlang https://github.com/tonyrog/elpcisp
2013-06-17T22:54:59 < Thorn> https://github.com/tonyrog/elpcisp/blob/master/src/elpcisp.erl
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2013-06-17T23:21:59 < Laurenceb_> http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1295/LN1808?icmp=stm32l100_bn_home_jun2013
2013-06-17T23:22:01 < Laurenceb_> fapfap
2013-06-17T23:22:47 < gxti> woot
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2013-06-17T23:22:53 < gxti> moar parts
2013-06-17T23:24:44 < Laurenceb_> 0.9 μA Standby mode + RTC  <-nice
2013-06-17T23:24:53 < Thorn> what's the difference between LQFP and UFQFPN?
2013-06-17T23:25:18 < Thorn> ultraflat or something?
2013-06-17T23:25:43 < HTT-Bird> Thorn: I suspect the latter is really a QFN with a funny name
2013-06-17T23:25:53 < HTT-Bird> i.e. a leadless package
2013-06-17T23:26:01 < HTT-Bird> check the package drawing for sure
2013-06-17T23:26:07 < Laurenceb_> yup
2013-06-17T23:26:14 < Thorn> unfortunately looks like you're right. so no qfp48
2013-06-17T23:26:33 < Thorn> wtf. stm32f1 are available in lqfp48
2013-06-17T23:26:44 < Laurenceb_> yeah, lame
2013-06-17T23:26:56 < Laurenceb_> 9µA run is nice
2013-06-17T23:28:43 <+Steffanx> i remember someone liking to that before.. and the conclusion was this new one isnt THAT impressive
2013-06-17T23:28:55 < Laurenceb_> yeah, silabs is the best
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2013-06-17T23:54:59 < rigid> does anyone know if it's critical to leave a pin VBAT dangling unconnected?
2013-06-17T23:55:08 < rigid> or should I tie it to VSS?
2013-06-17T23:56:15 < karlp> Laurenceb_: l100 is OLD
2013-06-17T23:56:17 < karlp> months now.
2013-06-17T23:56:23 < karlp> pay attention!
2013-06-17T23:57:05 < karlp> major improvement with l100 is quite noticeably cheaper than l151
2013-06-17T23:57:12 < karlp> you get less ram and eeprom though
2013-06-17T23:57:21 < karlp> and a little less current in some modes.
2013-06-17T23:57:23 < Laurenceb_> i see
2013-06-17T23:57:32 < Laurenceb_> yeah the sleep modes look a little nicer
2013-06-17T23:57:37 < Laurenceb_> but silabs still pwns
2013-06-17T23:58:00 < rigid> i wonder if I really need everything I have in my current circuit: http://boogiepalace.hopto.org/stuff/1371502591375969918.png and http://boogiepalace.hopto.org/stuff/1371502654592832622.png
2013-06-17T23:58:03 < Laurenceb_> also msp430 is pretty pointless now
2013-06-17T23:58:15 < Thorn> rigid: Vbat should be connected to Vdd if not used iinm
2013-06-17T23:58:16 < rigid> it's basically the design of the dev-board
2013-06-17T23:58:45 < Laurenceb_> Thorn: it can be left unconnected
2013-06-17T23:58:47 < Ranewen> is this valid http://i.imgur.com/1rnEKuJ.jpg
2013-06-17T23:58:56 < rigid> Thorn: yeah Vdd... not Vss... i have it like that, just mixed it up
2013-06-17T23:59:37 < rigid> Laurenceb_: without any drawbacks? i'm not sure of all uses for this pin... i suppose it's for brown out detection?
2013-06-17T23:59:44 < karlp> Laurenceb_: how available is silabs? and is it compat with all of the other stm32? ;)
2013-06-17T23:59:47 < Thorn> and you don't need a resistor on BOOT0 unless you plan on pulling it high
--- Day changed Tue Jun 18 2013
2013-06-18T00:00:01 < karlp> msp430 is way pointless, fuck that shit
2013-06-18T00:00:14 < Thorn> Vbat is power for the backup domain and RTC
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2013-06-18T00:01:28 < Laurenceb_> i leave bvat floating
2013-06-18T00:01:31 < Laurenceb_> works ok
2013-06-18T00:02:44 < Thorn> also a 4.7uF cap is recommended for stm32f1 in addition to the 0.1uF ones
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2013-06-18T00:05:51 < rigid> Thorn: ah, thank you
2013-06-18T00:07:43 < Tectu> I am always confused by the PWRON pin
2013-06-18T00:07:55 < Tectu> I don't really see it's sense/meaning
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2013-06-18T00:10:54 < Laurenceb_> huh?
2013-06-18T00:10:59 < Laurenceb_> port a pin 0 ?
2013-06-18T00:11:40 < Laurenceb_> wow Giovanni on #chibios
2013-06-18T00:34:09 < Tectu> Laurenceb_, he will be there more frequently
2013-06-18T00:38:00 < BrainDamage> was he bombed with animu questions rather than software'
2013-06-18T00:38:33 <+Steffanx> that only happens here BrainDamage
2013-06-18T00:38:39 < Tectu> jup
2013-06-18T00:38:54 < Tectu> cuz the admin of #chibios is quite a good one
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2013-06-18T00:42:33 <+Steffanx> sure Tectu
2013-06-18T00:42:55 < gxti> Steffanx is learning
2013-06-18T00:43:22 <+Steffanx> You too, but you learn the wrong thing
2013-06-18T00:43:29 < gxti> regrettably
2013-06-18T00:43:41 <+Steffanx> or you're just getting grumpier
2013-06-18T00:44:04 < Tectu> g'night guys
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2013-06-18T02:53:52 < dongs> where's that R2 nigga
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2013-06-18T02:56:01 < gxti> probably figuring out why his board is short-circuited
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2013-06-18T04:21:28 < inca> is lwip dead?
2013-06-18T04:39:30 < dongs> dead as bsd
2013-06-18T04:56:11  * gnomad ponders what *that* means...
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2013-06-18T04:58:30 < dongs> you must be new here
2013-06-18T05:01:08 < inca> dongs: yes, bsd has been dead and dying for as long as I have known of them
2013-06-18T05:01:15 < inca> funny, that
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2013-06-18T05:11:13 < gnomad> it has been a while since I've used any of the BSDs, but FreeBSD and OpenBSD still seem to be chugging along, each with major releases in the past six months.
2013-06-18T05:11:18 < gnomad> I would hardly call that dead
2013-06-18T05:12:00 < Thorn> does anybody still use them?
2013-06-18T05:12:07 < inca> gnomad: indeed. In fact, they are still tech leaders in a lot of ways. Take the USB stack from FreeBSD, for instance.
2013-06-18T05:12:36 < inca> It's just that their license is understated and does not make them the center of attention
2013-06-18T05:13:24 < gnomad> I think it isn't so much that the BSD community has shrunk, it is just that it never grew the way Linux did.
2013-06-18T05:14:04 < inca> RMS is a bit of a PR guy
2013-06-18T05:14:39 < inca> BSD had issues with elitism in the early days... linux was for "everyman"
2013-06-18T05:14:50 < gnomad> i haven't heard much from RMS lately
2013-06-18T05:14:53 < inca> It's not that way anymore, but I imagine it had something to do with it.
2013-06-18T05:15:05 < inca> Yeah
2013-06-18T05:15:36 < baird> The last public commenting from rms I've heard was the 'dangers of the cloud'..
2013-06-18T05:15:51 < gnomad> I think you are referring to the fact that the BSD maintainers were far more picky with their patch acceptance.
2013-06-18T05:16:51 < inca> gnomad: It was both... the maintainers and kernel dev attitudes pervaded the community back way back
2013-06-18T05:17:33 < baird> At the time that Linux came along, there was really a sizable number of programmers keen on the GPL, thanks to GCC.
2013-06-18T05:18:16 < inca> baird: that's right
2013-06-18T05:18:45 < inca> GCC was key player in winning the hearts and minds for GPL, IIRC
2013-06-18T05:19:34 < baird> The "GPL has AIDS, Mikey" wasn't that bad in the early days-- really only after 1997 that it took off. NetBSD was actually hosted by the FSF for the first few years, and was a bootstrap system for gnumach & Hurd. In 1997 was when Theo started running out of ideas to maintain his cult..
2013-06-18T05:20:36 < inca> =)
2013-06-18T05:22:38 < baird> The "No GPL in the Kernel" is a 'recent' thing too-- the 68000 soft FPU code was GPL, etc.
2013-06-18T05:23:14 < inca> I had no idea!
2013-06-18T05:23:40 < inca> 68k, ftw
2013-06-18T05:23:51 < emeb_mac> 6502 4-ever
2013-06-18T05:24:16 < inca> while we are at it, Burroughs B5000!
2013-06-18T05:24:33 < inca> death to the MMU!
2013-06-18T05:24:34 < emeb_mac> *whoosh* - over my head.
2013-06-18T05:25:08 < inca> emeb_mac: http://en.wikipedia.org/wiki/Memory_management_unit#Unisys_MCP_Systems_.28Burroughs_B5000.29
2013-06-18T05:27:04 < emeb_mac> seems like the difference between MCP and MMU is mostly academic.
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2013-06-18T05:29:41 < inca> =) and yet it is such an essential difference between Cortex M* systems and A* systems.
2013-06-18T05:29:56 < inca> Linaro vs. ARM GCC Embedded
2013-06-18T05:31:15 < inca> Honestly, it seems to me that the MMU is a relic of the x86 backward compatability issue
2013-06-18T05:31:33 < inca> So, it is a bit of a kludge because Intel did not want to "break" compatability
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2013-06-18T06:06:40 < gxti> inca: what does cortex m have? afaik it's only protection, not virtual memory
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2013-06-18T06:16:15 < dongs> whats a 3 pos switch called thats ON/off/On
2013-06-18T06:16:48 < dongs> oops not that
2013-06-18T06:21:59 < dongs> mlike a 3 pos on/on/on thing with common center
2013-06-18T06:22:01 < dongs> is tehre one like that?
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2013-06-18T07:17:28 < gnomad> SPDT center off
2013-06-18T07:18:42 < gnomad> no, you mean like a 3-position rotary switch?
2013-06-18T07:19:58 < dongs> nah
2013-06-18T07:20:03 < dongs> like \ | /
2013-06-18T07:20:06 < dongs> all 3 positions are on
2013-06-18T07:20:08 < dongs> with a common shit
2013-06-18T07:20:09 < dongs> i found some
2013-06-18T07:20:12 < dongs> seems prety spendy
2013-06-18T07:20:29 < dongs> so it basically switches between 3 possible circuits
2013-06-18T07:25:20 < emeb_mac> what's that for?
2013-06-18T07:26:21 < emeb_mac> I use 3-pos SPDT (on/off/on) switches for some synthesizer stuff. just need two GPIO bits.
2013-06-18T07:28:15 < dongs> yeah this shit acutally needs 3
2013-06-18T07:28:18 < dongs> oh
2013-06-18T07:28:19 < dongs> wait
2013-06-18T07:28:25 < dongs> you can still do "3" modes
2013-06-18T07:28:27 < dongs> with on/off/on
2013-06-18T07:28:35 < dongs> lemme talk to the guy maybe save some $ on nonstandard trash
2013-06-18T07:30:10 < emeb_mac> right
2013-06-18T07:30:34 < dongs> ah, looks like its just trash, switching 120V or something
2013-06-18T07:30:36 < dongs> useless.
2013-06-18T07:30:43 < dongs> will just use these expensive 3 pos shit
2013-06-18T07:31:02 < emeb_mac> if it's not going to an MCU then yeah.
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2013-06-18T09:32:23 < Tectu> morning
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2013-06-18T09:36:23 < emeb_mac> mourning
2013-06-18T09:37:05 < Tectu> I'm not getting it... am I supposed to use a metric or the other one (inches and stuff) grid when placing  0603 (METRIC)   components?
2013-06-18T09:37:53 < dongs> huh
2013-06-18T09:37:54 < dongs> grid?
2013-06-18T09:37:59 < dongs> why do you need a grid for placing components.
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2013-06-18T09:39:54 < Tectu> dongs, or actual routing... I mean you want to have a grid where your pads are both "centered" to a grid point, no?
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2013-06-18T10:57:52 < zyp> «0603 (METRIC)»?
2013-06-18T10:59:08 < zyp> isn't that like 0201?
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2013-06-18T11:00:59 < zyp> Tectu, I'm pretty sure you don't want them that small
2013-06-18T11:01:30 < Tectu> zyp, well, I am confused by that, that's why I am asking
2013-06-18T11:02:09 < Tectu> so I should NOT go for 0603 (Metric) but "regular" 0603?
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2013-06-18T11:21:34 < Wipster> Morning all, probably not the right place but worth a shot. Im using IAR to debug my F4 with freertos running. Trying to view a counting semaphore using the wittenstien plugin, I have set configQUEUE_REGISTRY_SIZE and I have added the semaphore with vQueueAddToRegistry, but it never appears in the debug window. Anyone use this feature?
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2013-06-18T12:08:33 < dongs> Wipster: no, i debug with keil, shit just works w/o lame plugins
2013-06-18T12:08:43 < dongs> then again, i use CoOS rtos and not free(aids)rtos
2013-06-18T12:09:02 < dongs> lsat i tried IAR the IDE was pretty unbearable
2013-06-18T12:11:28 < Tectu> http://abload.de/img/2013-06-18-131056_127xykze.png
2013-06-18T12:11:35 < Tectu> attn dongs, open sorce software
2013-06-18T12:12:03 < dongs> rofl
2013-06-18T12:12:06 < dongs> are you doing this?
2013-06-18T12:12:12 < Tectu> yes, why?
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2013-06-18T13:10:24 < dongs> still laughing
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2013-06-18T13:16:41 < Tectu> dongs, about what?
2013-06-18T13:19:30 < dongs> your pic
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2013-06-18T14:06:09 < Tectu> dongs, you're laughing about which fact/part ?
2013-06-18T14:06:55 < zyp> Tectu, you want normal 0603, not metric
2013-06-18T14:07:04 < zyp> I don't know anybody using the metric stuff
2013-06-18T14:07:20 < zyp> and 0201 is pretty fucking small
2013-06-18T14:07:58 < zyp> 0603 metric means 0.6x0.3mm
2013-06-18T14:08:11 < zyp> normal 0603 is like 1.5x1mm or so
2013-06-18T14:08:14 < Tectu> zyp, I see
2013-06-18T14:08:24 < Tectu> zyp, well, digikey listed some 0603 (METRIC)
2013-06-18T14:08:32 < Tectu> (or was it farnell?)
2013-06-18T14:08:39 < Tectu> anyway, thanks for your clearification
2013-06-18T14:08:54 < zyp> sure, it's pretty much what is normally called 0201
2013-06-18T14:09:24 < Tectu> interesting
2013-06-18T14:10:15 < zyp> oh, and in case you were wondering, the normal 0603 is called that because it's 0.06x0.03 inches
2013-06-18T14:10:54 < Tectu> hehe
2013-06-18T14:11:09 < Tectu> I saw that in a datasheet, that's why I got confused about the  0603 (METRIC)
2013-06-18T14:25:44 < Laurenceb> dongs is not laughing
2013-06-18T14:25:51 < Laurenceb> dongs got pwned by your skillz
2013-06-18T14:26:19 < Laurenceb> whats the board for?
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2013-06-18T14:46:53 < Tectu> it's my current project.... a tripple channel arbitrary signal generator where each channel can output ANY waveform you specify. You can sync these three channels in any configuration with a phase offset between 0 and 359.9°. of course with variable amplitude and DC-Offset. it's controlled over USB (Host computer software) and/or a 5" touchscreen TFT.
2013-06-18T14:49:36 < dongs> zyp, status of that stencil
2013-06-18T14:49:38 < dongs> we have a window tomorw
2013-06-18T14:49:41 < dongs> not sure when is next one
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2013-06-18T15:04:01 < zyp> oh, not gonna catch that
2013-06-18T15:05:56 < dongs> lame
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2013-06-18T15:12:34 < Laurenceb> http://www.ebay.com/itm/Hand-made-Guinea-Pig-Scale-Mail-and-Helmet-Armor-/321142440749
2013-06-18T15:13:15 < dongs> old
2013-06-18T15:13:21 < dongs> also lol @ price
2013-06-18T15:19:42 < inca_> gxti: Right, just protection... but it is worth reading about the computer architectures which do not have the MMU and the benefits you gets if they do it right:http://en.wikipedia.org/wiki/Memory_management_unit#Unisys_MCP_Systems_.28Burroughs_B5000.29
2013-06-18T15:20:34 < inca_> gxti: the modern MMU seems largely defined by the i386 design choices by Intel, which seem to have some crippling effects on modern computers... namely, malloc
2013-06-18T15:21:03 <+Steffanx> Laurenceb, please send the crap to dongs in a private message next time. He is the only one interested in crap.
2013-06-18T15:21:49 < jpa-> 4kB pages are a bit small for the modern memory sizes on desktop
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2013-06-18T15:30:56 < zyp> jpa-, good thing you're not limited to 4kB pages nowadays then
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2013-06-18T15:31:42 < jpa-> zyp: wasn't the "large page" support in most operating systems still quite rarely enabled?
2013-06-18T15:31:56 < jpa-> i.e. defaults are still 4kB pages
2013-06-18T15:32:26 < zyp> that's not a hardware limitation
2013-06-18T15:33:32 < zyp> and even if it's a bit small, you only have about 0.1% of overhead for the page tables
2013-06-18T15:33:47 < zyp> a megabyte wasted per gigabyte of ram is not too bad
2013-06-18T15:34:53 < zyp> oh, that's for 32-bit, I guess 64-bit wastes twice that due to longer addrs, but I'm not familiar with the specifics
2013-06-18T15:45:49 < gxti> inca_: still nobody has explained how this 'MCP' is any different from a MMU
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2013-06-18T15:46:21 < gxti> in fact it looks worse, because it's tied to details like where on hard storage things go
2013-06-18T15:48:59 < zyp> MCP?
2013-06-18T15:49:07 < zyp> do you mean MPU?
2013-06-18T15:49:19 < zyp> or have I missed anything?
2013-06-18T15:49:39 < trepidaciousMBR> MCP was the sphinx-looking thing in Tron
2013-06-18T15:49:45 < gxti> just some dubious section on the MMU wikipedia article
2013-06-18T15:50:04 < gxti> attempting to explain why this 'MCP' thing some old burroughs system had is not a MMU, whien it sounds like it's just a MMU
2013-06-18T15:51:05 < karlp> and... atmel's joined the cortex m0+ club
2013-06-18T15:51:08 < gxti> i don't know why he keeps bringing it up
2013-06-18T15:51:17 < zyp> gxti, agreed
2013-06-18T15:51:32 < gxti> cortex-m has neither mmu nor mcp, just memory protection
2013-06-18T15:51:32 < zyp> I just looked through it
2013-06-18T15:51:45 < zyp> sounds similar to the old segmentation system of x86
2013-06-18T15:52:26 < gxti> sounds like someone overly fond of the system wrote a biased and poorly-sourced wikipedia section about it trying to explain why it is superior and failed :|
2013-06-18T15:52:33 < zyp> yeah
2013-06-18T15:53:33 < karlp> if you're doing timer chaining to ge ta 32 bit counter, is there also super easy ways to say, "just give me an interrupt when this 32bit value matches" or do you still have ot do check matches on both portions yourself all the time?
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2013-06-18T15:54:17 < gxti> you could do a compare interrupt for the high word, then use that to set up an interrupt for the low word. or something.
2013-06-18T15:54:43 < karlp> yeah, was wondering if there was any magic help in the timer modes I haven't seen.
2013-06-18T15:54:46 < gxti> but it wouldn't work very well for low values of the low word.
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2013-06-18T17:11:49 < zyp> project idea: nfc tags with eink displays
2013-06-18T17:12:49 < Tectu> but flexible ones
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2013-06-18T17:14:01 < zyp> Tectu, do you get those anywhere?
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2013-06-18T17:15:33 < Thorn> I'm currently failing hard with BMP lpc17xx support. can't find a way to probe for them without calling IAP (= stop the cpu, clobber registers & RAM), and flash programming freezes both the target and the debugger hard
2013-06-18T17:16:07 < Tectu> Thorn, I just know that there are flexible NFC tags and flexible diplays. I don't know if there are any flexible eInk displays in particular
2013-06-18T17:16:20 < Tectu> eink.com says yes: http://www.eink.com/flexible.html
2013-06-18T17:16:40 < Thorn> okay thanks for the info lol.
2013-06-18T17:16:59 < zyp> Thorn, hmm, that sounds weird
2013-06-18T17:18:29 < Thorn> how much did you have to change the lpc11 flash code for lpc43xx?
2013-06-18T17:18:44 < Thorn> I got the impression than it wasn't much at all
2013-06-18T17:19:22 < Thorn> good thing I have two debuggers so I can debug while I debug
2013-06-18T17:19:50 < zyp> a bit
2013-06-18T17:20:08 < zyp> dual bank support and offset mostly
2013-06-18T17:21:00 < Thorn> lpc11 has 4K sectors and lpc17 has 32K sectors above 32K but I tried loading a very small image and it still freezes
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2013-06-18T17:30:00 < zyp> Tectu, sure sure, but do you get those anywhere?
2013-06-18T17:30:30 < zyp> I don't care about what have been proved possible, I care about what I can order at a reasonable price
2013-06-18T17:34:56 < karlp> zyp: aren't lots of shop shelf price tags all nfc+eink? or are they just rfid+lcd?
2013-06-18T17:35:04 < Tectu> zyp, I understand and I think it could be hard
2013-06-18T17:36:21 < jpa-> karlp: i have seen IR + eink atleast
2013-06-18T17:42:08 < dongs> ok so im back to debounce stuff
2013-06-18T17:42:34 < dongs> i got a couple exti interrupts on buttons.
2013-06-18T17:42:39 < dongs> any generic way to debounce them all?
2013-06-18T17:42:42 < dongs> does exti have some built in shit?
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2013-06-18T17:46:29 < dongs> killchat?
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2013-06-18T17:48:08 < Tectu> dongs, from my knowledge, the STM32 does not have any built-in hardware debouncing
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2013-06-18T17:48:41 < dongs> i suspected that.
2013-06-18T17:48:57 < Laurenceb> lurn 2 capacitors
2013-06-18T17:49:04 < dongs> no.
2013-06-18T17:49:07 < dongs> you said that last time
2013-06-18T17:49:08 < dongs> i asked
2013-06-18T17:49:09 < BrainDamage> pad it in a foam envelope
2013-06-18T17:49:14 < Laurenceb> lol
2013-06-18T17:50:36 < Tectu> dongs, well... software debounce then
2013-06-18T17:50:46 < dongs> havent found anything nongay.
2013-06-18T17:50:49 < dongs> feel free to link
2013-06-18T17:51:07 < dongs> my current method of val = read(); sleep(5); if (val == read()) { dicks } seems kinda gay.
2013-06-18T17:51:45 < Thorn> sleep() in a EXTI handler?
2013-06-18T17:51:58 < dongs> thats what im sayin.
2013-06-18T17:52:00 < Tectu> sleep in ISR?
2013-06-18T17:52:01 < dongs> so fail.
2013-06-18T17:52:04 < gxti> use interrupt to set a var, poll the var in systick
2013-06-18T17:52:20 < Tectu> dongs, start a timer on interrupt
2013-06-18T17:52:24 < dongs> that... seems a bit excessive..
2013-06-18T17:52:32 < Laurenceb> gxti's method is how i do it
2013-06-18T17:52:37 < Laurenceb> also i use caps
2013-06-18T17:52:56 < dongs> i dont understand what systick does in this case
2013-06-18T17:53:17 < gxti> it's an interrupt that you already have that polls pretty slowly
2013-06-18T17:53:21 < dongs> i know that
2013-06-18T17:53:28 < dongs> i mean what does it do to help debounce
2013-06-18T17:53:47 < gxti> adds at least 1ms of delay, and you can do simple shit like change the var to a counter if you want more
2013-06-18T17:53:49 < dongs> http://www.emcu.it/STM32/STM32Discovery-Debounce/STM32Discovery-InputWithDebounce_Output_UART_SPI_SysTick.html fuck this im just gonna rtfm
2013-06-18T17:54:55 < dongs> so wait, i have to sample input on every systick?
2013-06-18T17:55:02 < dongs> why hte fuck do i ned to bother wiht exti at all then?
2013-06-18T17:55:09 < gxti> i guess you don't
2013-06-18T17:55:28 < gxti> debouncing is by definition not low latency so not much point in interrupting at all
2013-06-18T17:55:36 < dongs> hmm
2013-06-18T17:56:08 < dongs> still this seems so hacky/lame
2013-06-18T17:56:38 < gxti> you'll survive
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2013-06-18T17:56:54 < dongs> also i have to make my own callbacks for stuff then...
2013-06-18T17:57:03 < dongs> where in exti i can just run shit from there.
2013-06-18T17:57:12 < dongs> life is so hard.
2013-06-18T17:57:44 < gxti> or you could plop down a cap
2013-06-18T17:57:47 < gxti> your choice
2013-06-18T17:57:53 < dongs> no thats hte lame choice
2013-06-18T17:57:57 < dongs> and increases bom cost
2013-06-18T17:58:40 < gxti> so what would you consider optimal, some hardware block just for debouncing?
2013-06-18T17:58:48 < dongs> haha i duno
2013-06-18T17:58:52 < dongs> just a non-lame way to debounce
2013-06-18T17:58:58 < dongs> i mean even tarduino has debounce lib
2013-06-18T17:59:00 < gxti> how vague
2013-06-18T17:59:15 < gxti> 'debounce lib' is probably doing sleep(5)
2013-06-18T17:59:26 < dongs> http://playground.arduino.cc/code/bounce
2013-06-18T17:59:36 < gxti> there are only so many ways to do this
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2013-06-18T18:04:05 < zyp> 16:55:28 < gxti> debouncing is by definition not low latency so not much point in interrupting at all
2013-06-18T18:04:08 < zyp> that's not true
2013-06-18T18:04:30 < gxti> you're right.
2013-06-18T18:04:42 < dongs> zyp, any great pro ideas to debounce hten
2013-06-18T18:04:49 < dongs> or im goin with that  emcu garbage.
2013-06-18T18:04:57 < zyp> gxti, nothing stops you from triggering on the first edge, you just have to ignore immediately following edges
2013-06-18T18:05:04 < gxti> yeah i got it
2013-06-18T18:05:07 < gxti> work is frying my brain
2013-06-18T18:05:17 < dongs> how do yo ignore?
2013-06-18T18:05:23 < dongs> just dont clear exti flag?
2013-06-18T18:05:26 < dongs> or turn off?
2013-06-18T18:05:28 < zyp> no
2013-06-18T18:05:33 < gxti> keep track of time since last state change
2013-06-18T18:05:37 < zyp> yep
2013-06-18T18:05:38 < gxti> refuse to change if it's < whatever
2013-06-18T18:06:55 < dongs> bah
2013-06-18T18:07:00 < dongs> now i need to get a micros() or similar shit setup
2013-06-18T18:07:12 < dongs> i suppose i can waste a timer on that
2013-06-18T18:07:31 < gxti> you want milliseconds, not microseconds
2013-06-18T18:07:44 < dongs> well yea, you get the idea
2013-06-18T18:07:50 <+Steffann> I guess you have your systick running ..
2013-06-18T18:08:06 < gxti> you generally want that kind of timer anyway, something that increments on systick. like chibios' system clock.
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2013-06-18T18:09:00 < gxti> also you need something to handle a pulse that is shorter than the debounce threshold, to make sure it goes back to 0
2013-06-18T18:09:58 < gxti> can exti trigger on both edges? if not, that's also something to worry about
2013-06-18T18:10:27 < gxti> ideal would be level-based triggering, then you could set the trigger level to the opposite of whatever the current accepted state of the button is
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2013-06-18T18:10:54 < dongs> it can
2013-06-18T18:10:55 < gxti> but you would have to disable the interrupt during the timeout period
2013-06-18T18:11:12 < dongs> why cant i just do like:
2013-06-18T18:11:28 < dongs> trigger on exti, disable that exti. check it in systick, after like 2 ticks or so, re-enable it
2013-06-18T18:11:52 < gxti> sure that would work
2013-06-18T18:12:28 < dongs> anything "wrong" wiht htat?
2013-06-18T18:12:32 < gxti> no
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2013-06-18T18:14:00 < Thorn> just run a simple state machine in a timer interrupt. EXTI won't help you
2013-06-18T18:14:32 < gxti> if you don't need the immediate interrupt then that ^ is the simplest solution
2013-06-18T18:14:44 < dongs> no i dont care about immediate at all
2013-06-18T18:14:45 < gxti> for human interface 5-30ms delay is no problem
2013-06-18T18:15:02 < gxti> so you just poll in systick (or every N systicks) and call functions
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2013-06-18T19:00:47 < dongs> wtf
2013-06-18T19:01:23 < dongs> i have cocks++ in systick handler
2013-06-18T19:01:26 < dongs> and i can hit it in debugger
2013-06-18T19:01:31 < dongs> but cocks
2013-06-18T19:01:34 < dongs> oh, fuck, not volatile
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2013-06-18T19:10:26 < Laurenceb> lol
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2013-06-18T19:12:35 < trepidaciousMBR> When I've done button debouncing in the past I've just sampled them at a few milliseconds and added 1 to a value if high, subtracted 1 if low, then you only consider it to be a change in state when it hits 0 or a max value. You can change the max value to set the debounce time. It's probably a terrible way of doing it
2013-06-18T19:14:15 < someone_r> Hi guys i am having truble with the I2C comunication. I am using the F100RB version.... In particular i am able to read the address of the slave but then if i want to stop the communication i am not able to do it... The only way is by using the DEINIT() instruction (when i want to restrasmit again i have to reinitialize all the I2C structure...)
2013-06-18T19:14:43 < someone_r> for stoppint the communication i tried to use this two commands
2013-06-18T19:14:44 < someone_r> I2C_AcknowledgeConfig(I2Cx, DISABLE);
2013-06-18T19:14:44 < someone_r>     I2C_GenerateSTOP(I2Cx, DISABLE);
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2013-06-18T19:15:21 < someone_r> and also with ENABLE
2013-06-18T19:15:58 < someone_r> but if i do this it will get stuck into
2013-06-18T19:15:59 < someone_r> while(!I2C_CheckEvent(I2Cx, I2C_EVENT_MASTER_MODE_SELECT));
2013-06-18T19:16:10 < someone_r> any idea why?
2013-06-18T19:17:25 < someone_r> i wanted to try directly by manually forcing the registers but i did not found documentation on CR1 register....
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2013-06-18T19:19:39 < dongs> check reference manual.
2013-06-18T19:19:42 < dongs> k fuck this slepe time
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2013-06-18T19:21:03 <+Steffanx> gn'
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2013-06-18T21:47:24 < Tectu> This is the most epic thread ever: http://forum.chibios.org/phpbb/viewtopic.php?f=16&t=1237
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2013-06-18T23:26:17 < Tectu> zyp, about the FSMC
2013-06-18T23:26:18 < Tectu> http://abload.de/img/2013-06-19-002544_191geumb.png
2013-06-18T23:26:22 < Tectu> the big chip on the left is the F3
2013-06-18T23:26:25 < Tectu> F4*
2013-06-18T23:26:42 < Tectu> it must be connected all over to the pin strip (headers) at the very right of the PCB
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2013-06-18T23:27:02 < Tectu> it's approx 80mm
2013-06-18T23:27:12 < Tectu> the yellow frame is 133.5mm
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2013-06-19T01:47:14 < gxti> so of the heap of linux dev boards that are presently flooding the market, do any have i2s brought out to a header, in particular ones capable of doing 192khz 24bit? or even just a mcu that can run uclinux, i guess
2013-06-19T01:47:57 < Tonelock> I think beaglebone black may have it
2013-06-19T01:48:47 < Tonelock> or ordinary beaglebone/board - don't remember off the top of my head- you will have to look
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2013-06-19T02:24:34 < emeb> gxti: yes - Beaglebone and Beaglebone Black both have several I2C ports brought out to their headers. Along with SPI, GPIO, etc.
2013-06-19T02:24:51 < emeb> err - I2S.
2013-06-19T02:24:54 < gxti> ya
2013-06-19T02:25:00 < emeb> (I2C also fwiw)
2013-06-19T02:25:15 < gxti> so yes to i2s?
2013-06-19T02:25:18 < emeb> yep
2013-06-19T02:25:22 < ds2> MCASP
2013-06-19T02:25:22 < gxti> cool
2013-06-19T02:25:45 < gxti> any idea how fast it can go?
2013-06-19T02:26:03 < emeb> I know that they have it working 48kHz. Can probably go faster.
2013-06-19T02:26:14 < emeb> BBB has on-board HDMI + Audio
2013-06-19T02:26:28 < gxti> 192khz stereo 32bit (i assume 24bit is padded?) would be 12.3mhz which seems feasible
2013-06-19T02:26:54 < emeb> gxti: you sure about that - those numbers don't look right.
2013-06-19T02:26:57 < ds2> the classic Beagleboards can definitely do that w/o issue
2013-06-19T02:26:57 < gxti> no!
2013-06-19T02:27:15 < ds2> did that for a project before
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2013-06-19T02:27:33 < emeb> I just worked out some I2S stuff and 12.xx MHz was adequate for 48kHz, 16-bit stereo.
2013-06-19T02:28:12 < gxti> 192'000 * 32 * 2 = 12'288'000
2013-06-19T02:28:14 < ds2> but is that 16bit sent as 16bit or inflated to 32bit?
2013-06-19T02:28:27 < emeb> gxti: OK - that was my MCLK rate, not SCLK.
2013-06-19T02:28:31 < emeb> So  you're right.
2013-06-19T02:29:00 < gxti> i actually don't know anything about i2s other than what i grazed over while looking in the RM for other stuff
2013-06-19T02:29:07 < gxti> but it still seems feasible.
2013-06-19T02:29:19 < emeb> Should be - 12MHz isn't horrific
2013-06-19T02:29:29 < gxti> anyway, thinking about making a mpd server, and i wanted to get a beaglebone anyway
2013-06-19T02:29:49 < gxti> to replace my current setup using a alix board (geode lx, lol) and usb dac that underruns if i tickle it funny
2013-06-19T02:29:53 < emeb> gxti: should be doable. If all you want is output then it's really easy.
2013-06-19T02:30:20 < gxti> cool.
2013-06-19T02:30:34 < gxti> now to cobble together a dac board using my limited analog skillz...
2013-06-19T02:30:41 < emeb> the BBB is < $50.
2013-06-19T02:31:02 < gxti> gotta use lots of gold-plated caps and $50 opamps, at least that's what the internets say!
2013-06-19T02:31:40 < emeb> I've had good luck with these DACs: http://www.cirrus.com/en/products/cs4344-45-46-48.html
2013-06-19T02:31:57 < emeb> the THD+N is probably not in your league tho
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2013-06-19T02:32:47 < emeb> if you're talking about gold plated caps anyhoo.
2013-06-19T02:32:55 < gxti> that was a joke about audiophiles.
2013-06-19T02:33:23 < emeb> but if you just want to hack around you can get that chip on a digilent PMOD: http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,401,858&Prod=PMOD-I2S
2013-06-19T02:34:22 < emeb> be aware that you'll need to give it an MCLK rate that's sufficient for the sample rate & oversample ratio that you want.
2013-06-19T02:34:34 < emeb> and getting that from the BBB may be a challenge...
2013-06-19T02:34:43 < ds2> 2x?
2013-06-19T02:34:45 < ds2> how fast?
2013-06-19T02:34:53 < gxti> emeb: i don't mind cutting it up a bit
2013-06-19T02:35:00 < gxti> to replace the oscillator or whatever
2013-06-19T02:35:48 < ds2> per Gerald, you can get the 24MHz signal
2013-06-19T02:35:59 < emeb> ds2: if he wants to run 192kHz and 256x oversampling then he needs to provide a 49.152MHz MCLK.
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2013-06-19T02:36:47 < emeb> and it needs to be synchronous with the SCLK otherwise - whee - bitslips.
2013-06-19T02:37:07 < gxti> if beaglebone can't generate i2s clock from an independent source then frequency switching might suck
2013-06-19T02:37:32 < ds2> the bone should be able to act as an i2s slave
2013-06-19T02:37:44 < ds2> so worse case, you feed it in from somewhere else
2013-06-19T02:38:10 < emeb> But - that's not how the default kernel audio is set up.
2013-06-19T02:38:19 < ds2> so
2013-06-19T02:38:26 < emeb> so you'll need to get hacky and dive into the kernal audio drivers.
2013-06-19T02:38:28 < ds2> spend sometime in the ALSA code
2013-06-19T02:38:37 < emeb> right - you're the expert on that.
2013-06-19T02:38:37 < gxti> i don't really mind hacking on the kernel either, as long as it's not from a blank slate
2013-06-19T02:38:43 < ds2> it isn't that bad... did it for the McBSP though
2013-06-19T02:38:50 < gxti> i just have no idea how any of this crap works yet.
2013-06-19T02:38:55 < emeb> I've spent a fair amount of fruitless work on that so I'm leery.
2013-06-19T02:39:08 < ds2> emeb: really? what was the stumbling block?
2013-06-19T02:39:11 < dongs> dongs
2013-06-19T02:39:20 < dongs> haha alsa
2013-06-19T02:39:25 < ds2> I got tossed in w/o warning the first time around
2013-06-19T02:39:59 < emeb> ds2: not enough experience I guess. Just got lost in all the layers of the SoC / ALSA driver code
2013-06-19T02:40:30 < ds2> nothing that time + lots of printf can't fix
2013-06-19T02:41:09 < emeb> ds2: yeah - after I'd spent a few days adding kernel printfs and tracing through it w/o results I had other things to do.
2013-06-19T02:41:12 < ds2> i was dragged kicking and screaming into a dying project and told - we need a driver for this CODEC, get an ALSA driver working... and oh btw, no schematics are available
2013-06-19T02:41:24 < emeb> ds2: sucks to be you. :(
2013-06-19T02:41:54 < ds2> only thing that tripped me up at that time was the pinmux
2013-06-19T02:42:12 < emeb> And of course, if you're working on the outside of the core kernel maintainers (Koen, et al) then everytime they update the kernel you get to start over.
2013-06-19T02:42:33 < ds2> eh?
2013-06-19T02:42:40 < emeb> or else get stuck using an ancient unsupported version...
2013-06-19T02:42:41 < ds2> I am not in the core kernel maintainer
2013-06-19T02:42:56 < ds2> a few lines of git magic and you're back
2013-06-19T02:43:17 < emeb> heh. It's so simple a child could do it. :P
2013-06-19T02:43:22 < ds2> having said that, they put in lots of crap I don't care for so I wind up backing out their changes
2013-06-19T02:43:27 < ds2> yes, it is.
2013-06-19T02:43:27  * emeb has sour graps.
2013-06-19T02:43:27 < gxti> i doubt maintaining an audio patchset would be nearly as complicated as, e.g., filesystems
2013-06-19T02:43:30 < emeb> grapes
2013-06-19T02:43:44 < ds2> git remote update; git merge origin/.... ; resolve any conflicts... move on.
2013-06-19T02:44:15 < gxti> merging is easy, figuring out what widespread architectural change the last release added is a lot more painful :p
2013-06-19T02:44:15 < ds2> gxti: it isn't. you are adding a CODEC, that is relatively easy...look at the ALSA SoC stuff
2013-06-19T02:44:26 < ds2> that's why I don't git pull ;)
2013-06-19T02:44:27 < gxti> oh look that function you were using is goooone
2013-06-19T02:44:37 < emeb> this ^
2013-06-19T02:44:38 < gxti> and no replacement exists!
2013-06-19T02:44:41 < ds2> git blame origin/FOO
2013-06-19T02:44:50 < ds2> it is bad enough, patch it back in ;)
2013-06-19T02:45:06 < gxti> yeah for this i wouldn't have that problem because i wouldn't care about updating the kernel anyway
2013-06-19T02:45:18 < gxti> although if i end up selling the hardware or something it would be nice if it worked
2013-06-19T02:45:34 < gxti> but yes, codec stuff is easy. in theory.
2013-06-19T02:45:40  * gxti reads about i2s
2013-06-19T02:46:05 < emeb> I2S is dirt simple
2013-06-19T02:46:19 < emeb> getting the SW side working is harder.
2013-06-19T02:46:33 < gxti> i am specifically concerned about the clocking, and switching thereof
2013-06-19T02:46:45 < ds2> i2sdoes have a lot of options
2013-06-19T02:46:47 < emeb> yes - that's what I see as the main issue also
2013-06-19T02:46:56 < ds2> DSP bit  alignment, left align, right align
2013-06-19T02:46:56 < gxti> because 44.1khz and 48khz are totally separate
2013-06-19T02:47:29 < emeb> ds2: yep - wordsize, sample rate, etc.
2013-06-19T02:47:43 < emeb> and don't forget master vs slave.
2013-06-19T02:48:00 < emeb> you might be able to easily dive into the existing driver and tweak those params.
2013-06-19T02:48:04 < ds2> emeb: if wordsize != sample size, you get interesting alignment options
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2013-06-19T02:48:16 < emeb> ds2: no doubt
2013-06-19T02:48:28 < ds2> and when the HW schematics or datahseet ain't available, it means a lot of not child friendly words being uttered
2013-06-19T02:48:34 < emeb> :)
2013-06-19T02:49:33 < emeb> gxti: take a look at the BBB HW manual: http://circuitco.com/support/index.php?title=BeagleBoneBlack#Hardware_Files
2013-06-19T02:49:44 < emeb> That's got most of what you need for the hookup.
2013-06-19T02:49:59 < dongs> C experts
2013-06-19T02:50:09 < dongs> where is the shit about void foo(); vs void foo(void);
2013-06-19T02:50:12 < emeb> Then you'll need the kernel source and that's more challenging since it exists as a set of patches against mainline.
2013-06-19T02:50:23 < ds2> just install OE
2013-06-19T02:50:25 < ds2> :D
2013-06-19T02:50:28  * ds2 ducks
2013-06-19T02:50:32 < emeb> you so funny
2013-06-19T02:50:38 < gxti> dongs: are you finally questioning your adherence to the old ways? no, i suppose that is unlikely.
2013-06-19T02:50:41 < emeb> actually that's what I've always done in the past.
2013-06-19T02:51:00 < dongs> gxti: (void); is proper way, im trying to  find an official reference that says so
2013-06-19T02:51:44 < gxti> i never noticed because gcc only cares if you use -Wextra
2013-06-19T02:52:33 < dongs> apparently if you declare as void foo();
2013-06-19T02:52:34 < dongs> you can later do
2013-06-19T02:52:46 < dongs> void foo(int x) { blah }
2013-06-19T02:52:49 < dongs> and it'll work.
2013-06-19T02:52:56 < dongs> so you have no parameter checking.
2013-06-19T02:53:47 < gxti> hmm, even with -Wall -Wextra -ansi i can't seem to get it to show up. i forget what i did before.
2013-06-19T02:54:14 < dongs> keil barfs with warnings on those
2013-06-19T02:55:05 < Thorn> >void f() tells the compiler that f takes an unspecified argument list. I.e. anything goes.
2013-06-19T02:55:14 < dongs> right.
2013-06-19T02:55:17 < Thorn> another reason to use C++
2013-06-19T02:56:04 < dongs> < Thorn> another reason not to use C++
2013-06-19T02:56:07 < dongs> I think you mean that
2013-06-19T02:56:17 < ds2> ewwwwwwwwwwww keil
2013-06-19T02:56:31 < dongs> ds2: keil has the best cortex-m compiler, by far
2013-06-19T02:56:39 < ds2> still ewwwwww
2013-06-19T02:56:42 < dongs> irrelevant
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2013-06-19T03:01:06 < gxti> or with -pedantic. i have no idea how i tricked gcc into warning on that.
2013-06-19T03:01:31 < gxti> oh well.
2013-06-19T03:14:55 < gxti> there's already an "audio cape", it looks ok but not great
2013-06-19T03:21:43 < emeb> gxti: I've got the HDMI + audio cape. Works OK.
2013-06-19T03:21:59 < gxti> this is the same one, just without hdmi stuffed
2013-06-19T03:22:08 < emeb> yep
2013-06-19T03:22:19 < gxti> how well does it deal with sample rate switching?
2013-06-19T03:22:27 < emeb> uses the TMS320AICmumblemumble codec
2013-06-19T03:22:33 < gxti> looks like it needs to reconfigure the pll each time
2013-06-19T03:22:43 < emeb> probably
2013-06-19T03:22:55 < emeb> haven't looked too closely at the guts.
2013-06-19T03:23:23 < gxti> well, with my current setup (geode + usb dac) sometimes when going from 96khz to 44.1khz i either get no sound or i get white noise
2013-06-19T03:23:35 < emeb> yech
2013-06-19T03:23:39 < gxti> just trying to make sure i'm not going to get that :p
2013-06-19T03:24:46 < emeb> codec -> http://www.ti.com/product/tlv320aic3106
2013-06-19T03:24:59 < gxti> already RTFMing
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2013-06-19T03:25:15 < gxti> the system manual for the cape said something about needing a reset after reconfiguring, that's why i'm concerned
2013-06-19T03:25:19 < dongs> ruguise talkin about audio stuff
2013-06-19T03:25:34 < dongs> is "cape" TI's shit for shield
2013-06-19T03:25:43 < gxti> beagleboner but yes
2013-06-19T03:27:20 < emeb> gxti: looks like it only goes to 96k
2013-06-19T03:27:44 < gxti> i could live with that
2013-06-19T03:27:52 < gxti> if i make my own then i'll do 192
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2013-06-19T03:28:17 < ds2> 7
2013-06-19T03:31:19 < emeb> that codec is nice in having an internal PLL to generate the oversampled clock from the bitclock.
2013-06-19T03:32:15 < emeb> and that board has a 12MHz osc on it, from which the PLL can generated 44.1, 48 or 96 as required.
2013-06-19T03:33:08 < emeb> don't know if that cape is compatible with the cheaper BBB, or if you need to get the older, more expensive BBW
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2013-06-19T03:34:35 < dongs> haha bbw
2013-06-19T03:35:02 < emeb> do I need to go to urban dictionary to look for alternate meanings for bbw?
2013-06-19T03:35:24 < emeb> heh
2013-06-19T03:35:27 < dongs> there';s even a wikipedo article on taht
2013-06-19T03:38:18 < gxti> oh and it's stocked at digikey, that kind of settles it
2013-06-19T03:38:25 < emeb> there you go
2013-06-19T03:41:36 < gxti> not sure about that 'aux' connector next to the ethernet cutout, it's not wired to anything and it looks like there aren't any mechanical conflicts
2013-06-19T03:41:45 < gxti> so hopefully ok
2013-06-19T03:42:15 < gxti> have to check the rest of the signals to make sure they go somewhere useful on the bbb
2013-06-19T03:48:56 < emeb> gxti: main question is if audio cape conflicts with the on-board HDMI audio.
2013-06-19T03:49:00 < emeb> of the bbb
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2013-06-19T04:04:40 < gxti> looks ok
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2013-06-19T07:41:30 < yunfan> hi, i am a newbie learning arm asm using stm32f0 discovery, can anyone told me where can i found the nBOOT1 and configure it?
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2013-06-19T07:46:27 < akaWolf> I think you can find a switch on the board )
2013-06-19T07:47:09 < yunfan> i cant found that even in ds pdf
2013-06-19T07:47:15 < yunfan> that's why i came here for asking
2013-06-19T07:48:04 < Tectu> good morning
2013-06-19T07:48:12 < akaWolf> good )
2013-06-19T07:54:32 < akaWolf> yunfan: see the schematic
2013-06-19T07:55:12 < yunfan> will check that doc
2013-06-19T07:55:22 < akaWolf> and?
2013-06-19T07:55:49 < yunfan> btw, i dislike those document author who use many and many nouns randomly
2013-06-19T07:56:03 < yunfan> need to found that :[
2013-06-19T07:58:00 < yunfan> akaWolf: its PB2
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2013-06-19T07:58:38 < akaWolf> to which it is connected?
2013-06-19T07:59:03 < yunfan> i've no idea
2013-06-19T07:59:06 < Tectu> yunfan, huh? which document?
2013-06-19T07:59:20 < akaWolf> yunfan: schematic of your board!
2013-06-19T08:00:01 < yunfan> Tectu: http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/stm32f0discovery_sch.zip
2013-06-19T08:00:20 < yunfan> akaWolf: i know less on circruit
2013-06-19T08:02:27 < akaWolf> BOOT1 -- logic zero
2013-06-19T08:02:37 < akaWolf> hard
2013-06-19T08:03:21 < akaWolf> maybe you can cut the track, if you can find )
2013-06-19T08:03:34 < yunfan> so there're not swich?
2013-06-19T08:03:46 < akaWolf> yep
2013-06-19T08:03:48 < yunfan> i need to wire it myself for configuring it?
2013-06-19T08:04:09 < akaWolf> before cut existing wire
2013-06-19T08:04:10 < akaWolf> )
2013-06-19T08:04:12 < yunfan> can i wire it with vdd?
2013-06-19T08:04:20 < akaWolf> maybe
2013-06-19T08:04:26 < akaWolf> see the board
2013-06-19T08:04:29 < akaWolf> files )
2013-06-19T08:05:10 < yunfan> you sure it wont cause short circuit? i am serious
2013-06-19T08:06:41 < Tectu> yunfan, you want to do BOOTX magic?
2013-06-19T08:06:58 < Tectu> yunfan, you can connect those to VDD or VSS without any resistor
2013-06-19T08:09:06 < yunfan> Tectu: the document said enabled nBOOT1 could selected flash boot mode
2013-06-19T08:09:19 < yunfan> which is what i want
2013-06-19T08:09:23 < Tectu> so?
2013-06-19T08:09:48 < akaWolf> yunfan: do you have multimetr? )
2013-06-19T08:10:06 < akaWolf> yunfan: check this, if you want )
2013-06-19T08:10:36 < yunfan> yes i have that
2013-06-19T08:11:02 < yunfan> Tectu: so i came to found the answer for configuring that before i got know the answer :]
2013-06-19T08:11:41 < Tectu> yunfan, the discovery boards usually have solder jumpers for these
2013-06-19T08:11:43 < akaWolf> yunfan: you must accurate cut the wire
2013-06-19T08:12:09 < yunfan> akaWolf: ok will check that when night, its just some guys have execute the commands (rm -rf / )what we give him for joking
2013-06-19T08:12:26 < akaWolf> )
2013-06-19T08:12:28 < yunfan> akaWolf: which wire?
2013-06-19T08:12:53 < yunfan> Tectu: there're cn2 cn3 jp1 jp2
2013-06-19T08:13:17 < akaWolf> which connect PB2 to VSS
2013-06-19T08:13:51 < Tectu> yunfan, can you please explain your problem? The discovery manual usually has a table showing the different boot modes and the default state of the jumpers including their location
2013-06-19T08:14:56 < yunfan> akaWolf: got it, you mean it currently connected pb2 and vss, which cause nBOOT1 = 0 ?
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2013-06-19T08:15:08 < akaWolf> yunfan: yep
2013-06-19T08:15:30 < yunfan> akaWolf: got understanded now, thanks
2013-06-19T08:15:30 < Tectu> indeed
2013-06-19T08:15:40 < yunfan> Tectu: well , problem solved :]
2013-06-19T08:16:42 < Tectu> yunfan, good ^^
2013-06-19T08:17:06 < yunfan> anyone coding in asm for these chip?
2013-06-19T08:17:19 < yunfan> i found there're full of cpp code samples
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2013-06-19T08:17:36 < Tectu> yunfan, usually people try to avoid that
2013-06-19T08:18:02 < Tectu> yunfan, mostly just boot-up code
2013-06-19T08:18:17 < akaWolf> yunfan: if you want nBoot1 = 1, you must cut the wire, and then solder the wire from VDD to nBoot1
2013-06-19T08:18:55 < yunfan> akaWolf: and it seems i cant cut that wire printed in the board?
2013-06-19T08:19:20 < akaWolf> yes )
2013-06-19T08:19:22 < Tectu> akaWolf, cut a wire????
2013-06-19T08:19:28 < Tectu> usually it's just solder bridge magic?
2013-06-19T08:19:35 < yunfan> nice design
2013-06-19T08:19:36 < akaWolf> Tectu: maybe )
2013-06-19T08:19:55 < akaWolf> Tectu: but not on this schematic
2013-06-19T08:20:07 < Tectu> Don't know them
2013-06-19T08:22:25 < yunfan> oh, another question
2013-06-19T08:22:37 < yunfan> is there any usb stick using these stm32 chip?
2013-06-19T08:22:45 < yunfan> and still could be programming
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2013-06-19T08:29:00 < dongs> wat
2013-06-19T08:29:23 < KennyMcCormic> stm32 discovery board :)
2013-06-19T08:29:51 < yunfan> i mean usb stick
2013-06-19T08:30:28 < KennyMcCormic> you need a custom bootloader to update fw inside that kind of thing
2013-06-19T08:31:21 < yunfan> hmm
2013-06-19T08:33:13 < dongs> on F0 maybe
2013-06-19T08:33:18 < dongs> F4/F4 have usb bootloader.
2013-06-19T08:33:31 < KennyMcCormic> yep
2013-06-19T08:33:43 < dongs> maybe F2 too i guesS?
2013-06-19T08:34:42 < yunfan> what's your career? are you all real hardware engineer?
2013-06-19T08:34:52 < KennyMcCormic> yunfan: http://www.seeedstudio.com/wish/minimum-stm32-usb-board-fst-01-p783
2013-06-19T08:35:27 < dongs> heh
2013-06-19T08:35:46 < dongs> yunfan: i'm an irc troll
2013-06-19T08:35:46 < KennyMcCormic> yunfan: why do you need a real hw engineer?
2013-06-19T08:35:47 < yunfan> KennyMcCormic: oh i need to say usb disk
2013-06-19T08:36:15 < yunfan> KennyMcCormic: because i am a self-taught software engineer, i am lack of those knowledges :[
2013-06-19T08:37:08 < KennyMcCormic> you can always read some books
2013-06-19T08:37:35 < yunfan> can you recomment some?
2013-06-19T08:38:05 < KennyMcCormic> hm
2013-06-19T08:38:30 < yunfan> what i got is full of nouns formulas and assume i am a college student who have already got some other knowledges on electronic
2013-06-19T08:39:20 < KennyMcCormic> so you can understand formulas but cant use them?
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2013-06-19T08:39:54 < KennyMcCormic> yunfan: http://www.amazon.co.uk/Electronics-Dummies-UK-Dickon-Ross/dp/0470681780
2013-06-19T08:40:17 < yunfan> no, i cant understand those formulas seems they refer some symbols i dont know
2013-06-19T08:40:28 < Abhishek_> Hello everyone. Wanted to know if someone has done ENC28J60 + F4D  + lwIP before
2013-06-19T08:40:30 < yunfan> right, i am dummy on this domain :]
2013-06-19T08:40:39 < KennyMcCormic> ^)
2013-06-19T08:40:40 < KennyMcCormic> :)
2013-06-19T08:41:28 < yunfan> it would better if this book has translated edition
2013-06-19T08:42:40 < dongs> generally if you are a programmer and you cant read english, just gtfo
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2013-06-19T08:44:17 < KennyMcCormic> dongs: good point :)
2013-06-19T08:44:54 < yunfan> i could read code and code comments freely
2013-06-19T08:45:15 < baird> Japan's getting it wrong again... https://www.youtube.com/watch?v=7TQiFLggsho
2013-06-19T08:45:38 < yunfan> but for big chunk of concepts description, sometimes couldnt.
2013-06-19T08:46:29 < yunfan> anyway , would try that, its our country's fault for not be leader of science
2013-06-19T08:47:34 < yunfan> still i am lucky for not have to learning latin and arabic like ancient people :]
2013-06-19T08:49:09 < KennyMcCormic> you will get nowhere without english
2013-06-19T08:49:27 < KennyMcCormic> disregarding of what your country is
2013-06-19T08:49:55 < yunfan> i come from china
2013-06-19T08:50:17 < KennyMcCormic> i c that
2013-06-19T08:50:33 < yunfan> our language system has huge differences with yours
2013-06-19T08:51:21 < KennyMcCormic> i guess so, russian is so much different
2013-06-19T08:51:45 < yunfan> our ancestor waste too much time on made the language complexier :]
2013-06-19T08:52:10 < yunfan> KennyMcCormic: but russian also use letters based language
2013-06-19T08:52:46 < KennyMcCormic> yunfan: koreans use letters with similar language as yours, no problem
2013-06-19T08:54:56 < yunfan> KennyMcCormic: it seems they still have chinese characters mixed and so does japanese
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2013-06-19T08:55:43 < yunfan> well i'd better not justify myself and to do reading :]
2013-06-19T08:55:54 < KennyMcCormic> yep
2013-06-19T08:56:41  * yunfan doing that
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2013-06-19T09:44:04 < emeb_mac> gxti: audio cape + BBB appears to work, but some futzing required: http://www.elinux.org/BeagleBone_Black_Capes
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2013-06-19T09:47:07 < dongs> MEMORY CAPE
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2013-06-19T10:08:24 < emeb_mac> Lois - fetch me the MEMORY CAPE. Bring it to my FORTRESS OF SOLITUDE!
2013-06-19T10:12:47 < zyp> Tectu, what prevents you from moving the headers closer?
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2013-06-19T10:24:08 < Abhishek_> ENC28J60 + F4D + lwIP - anyone ?
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2013-06-19T10:28:40 < dongs> why would oyu use enc28 on stm32
2013-06-19T10:31:07 < Abhishek_> again, becuase I don't have PHY
2013-06-19T10:31:21 < Abhishek_> and I have a enc28j60 module
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2013-06-19T10:42:15 < R2COM> pay few more bucks and buy something what has phy?
2013-06-19T10:42:29 < R2COM> unless you have a warehouse with fuckloads of components someone invested in xD
2013-06-19T10:43:18 < Abhishek_> I will, but wanted to test something which I currently have
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2013-06-19T10:45:30 < Tectu> zyp, which headers do you mean? The three on top of the big MCU aren't finaly placed yet
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2013-06-19T11:07:14 < zyp> Tectu, the one you were talking about running FSMC to
2013-06-19T11:07:26 < Tectu> zyp, ah
2013-06-19T11:07:44 < Tectu> zyp, that header is of a module that gets plugged on top of that PCB
2013-06-19T11:07:50 < Tectu> it's position is fixed :/
2013-06-19T11:08:13 < zyp> then move the MCU next to it, and the analog stuff to the left side?
2013-06-19T11:15:25 < dongs> R2COM: do you know anything about maskrom
2013-06-19T11:15:51 < dongs> R2COM: if chip/layout/whatever  has 32k, but user only needs say 8k, do they expand the area to fill silicon or leaev empty or make 32k and dont fill top or?
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2013-06-19T11:19:01 < R2COM> I cant tell, I'm not into design of rams. but I would assume it would cost more to leave empty unfilled areas?
2013-06-19T11:19:15 < R2COM> I mean, if someone designed 32k
2013-06-19T11:19:20 < R2COM> and 8k as well
2013-06-19T11:19:28 < R2COM> its not that hard to run two productions?
2013-06-19T11:19:38 < R2COM> so not sure
2013-06-19T11:20:40 < R2COM> since fab would charge more for more area (in general)
2013-06-19T11:21:35 < dongs> hm
2013-06-19T11:21:45 < dongs> but if its laid out as part of some IC or whatever
2013-06-19T11:21:56 < dongs> shrinking 8K to use less space doesnt really matter if its like in corner of teh chip
2013-06-19T11:22:47 < R2COM> well
2013-06-19T11:23:18 < dongs> i mean, would they fit 8k into same area
2013-06-19T11:23:23 < dongs> by increasing process or whatever
2013-06-19T11:23:31 < dongs> like enlarging fucking everything
2013-06-19T11:23:32 < zyp> what about bond wire pads? aren't they normally placed around the perimeter, thus creating a required minimum circumference?
2013-06-19T11:23:42 < dongs> yea that too
2013-06-19T11:23:49 < R2COM> in most processes, if for example you already using some set of metals (which I'm pretty sure they do, since chip as you say has even other stuff on it) it wont cost more since area already paid for, even if there are stuff like.. devices..metals..
2013-06-19T11:24:07 < R2COM> bond wires are around in general yes
2013-06-19T11:24:28 < R2COM> and during fab, usually user selects if they are connected to individual pins
2013-06-19T11:24:29 < R2COM> or
2013-06-19T11:24:34 < R2COM> if they are tied to downbond
2013-06-19T11:24:41 < R2COM> (in other words, usually center underneath pad of chip)
2013-06-19T11:25:43 < R2COM> usually fab charges for additional metal levels/and /or device types... so if area is used and paid for already, and you not using it, I assume one might just leave the stuff it is..and not use it.
2013-06-19T11:26:55 < dongs> hm ok
2013-06-19T11:27:09 < dongs> im loking at fucking weird shit.
2013-06-19T11:27:20 < dongs> the chip is spec'd to have 24k mask but there's clearly 32k
2013-06-19T11:27:28 < dongs> but there's about what looks like 8k of unused space
2013-06-19T11:28:59 < R2COM> unused looks like not filled with any structures at all?
2013-06-19T11:29:10 < dongs> no, its bits but theyt're blank
2013-06-19T11:29:13 < R2COM> or similar structure/features as in used space
2013-06-19T11:29:17 < R2COM> ok
2013-06-19T11:29:27 < R2COM> welll I guess it will just depend on designer
2013-06-19T11:29:32 < R2COM> maybe thats the way he did it
2013-06-19T11:29:45 < R2COM> maybe he had array, and then just didnt connect other 8k or something
2013-06-19T11:30:20 < R2COM> maybe because if process features+area was already payed for... there was no need to do extra design on making customised 24k..
2013-06-19T11:38:44 < R2COM> and by the way, one might choose not to put bond pads somewhere
2013-06-19T11:39:37 < R2COM> but in cany case I saw most of fabs require some rectangular area limits called like chip edge... so.. again you probably will have unused area anyway
2013-06-19T11:39:58 < jpa-> maybe they already had masks for all but the mask rom layer; so no need to pay extra for 24k masks when you can just leave a bit of empty space
2013-06-19T11:43:10 < zyp> dongs, when you say 8k of unused space, is that address space or die area?
2013-06-19T11:44:46 < zyp> because it would be quite natural to have a 32k address space even if only 24k is used, since it's 2^n
2013-06-19T11:45:21 < R2COM> yeah and then for example have physically available and tied to 0 inouts
2013-06-19T11:50:34 < R2COM> and sleep time!
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2013-06-19T12:06:21 < dongs> fuckign garbage
2013-06-19T12:06:25 < dongs> stealing IP is hard
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2013-06-19T14:32:06 < zyp> man, the AVR32 RTC is fucking useless
2013-06-19T14:34:20 < Laurenceb> avrturd
2013-06-19T14:34:59 <+Steffanx> why so zyp?
2013-06-19T14:35:03 < zyp> it can't be clocked from the main oscillator, only 32k or internal RC
2013-06-19T14:35:32 < zyp> and prescaler is only 2^n, making it impossible to count something resembling seconds on internal RC
2013-06-19T14:35:50 < zyp> and it can't even be battery backed
2013-06-19T14:36:30 <+Steffanx> I guess you are not allowed to do add the 32k oscillator?
2013-06-19T14:36:52 < Laurenceb> http://en.wikipedia.org/wiki/DIBOL
2013-06-19T14:36:53 < Laurenceb> lolz
2013-06-19T14:37:00  * Steffanx wonders why kind of product uses AVR32 :)
2013-06-19T14:37:08 < zyp> Steffanx, no, boards were designed several years ago
2013-06-19T14:37:31 < zyp> and those pins are already used for other shit
2013-06-19T14:37:48 < zyp> oh well
2013-06-19T14:38:10 <+Steffanx> Years ago.. maybe i understand why AVR32 is used then.
2013-06-19T14:38:56 < zyp> there is an external battery backed RTC chip on the board
2013-06-19T14:39:10 < zyp> hooked up over I2C
2013-06-19T14:39:53 < zyp> but it's a silly full calendar
2013-06-19T14:40:49 < zyp> my plan was using the internal as a second counter, then just syncing it to the external RTC after powerup
2013-06-19T14:41:13 < zyp> but looks like that's going to be impossible
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2013-06-19T14:46:58 < rigid1> ahoy
2013-06-19T14:47:15 <+Steffanx>  lo
2013-06-19T14:47:16 < rigid1> is this the "new" official CMSIS? http://www.arm.com/products/processors/cortex-m/cortex-microcontroller-software-interface-standard.php
2013-06-19T14:48:00 < rigid1> currently I use the version distributed in the stdperiph library by ST...
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2013-06-19T14:49:54 < Laurenceb> yeah
2013-06-19T14:49:59 < Laurenceb> it includes rtos now
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2013-06-19T15:02:15 < dongs> sup pros
2013-06-19T15:03:55 < Gargantuasauce> sitting in an airport that's about as big as the city i live in
2013-06-19T15:05:48 < Laurenceb> where?
2013-06-19T15:06:29 < Gargantuasauce> toronto
2013-06-19T15:06:59 <+Steffanx> Heh, where's the trip going to Gargantuasauce ?
2013-06-19T15:07:12 < Gargantuasauce> korea
2013-06-19T15:08:09 <+Steffanx> business trip?
2013-06-19T15:08:32 < dongs> best korea?
2013-06-19T15:09:01 < Gargantuasauce> student exchange program, and second-best korea
2013-06-19T15:09:42 <+Steffanx> define: best
2013-06-19T15:10:15 < Gargantuasauce> do you live under a rock
2013-06-19T15:11:55 < Laurenceb> wut
2013-06-19T15:12:00 < Laurenceb> north korea?
2013-06-19T15:12:14 < Laurenceb> meeting dear leader?
2013-06-19T15:12:14 <+Steffanx> No, but i dont know your definition of best.. and i'm pretty sure dongs definition of best is relates too "Democratic People's Republic of Korea"
2013-06-19T15:12:20 <+Steffanx> -o
2013-06-19T15:13:23 < Gargantuasauce> i am going to the properly westernized one
2013-06-19T15:13:53 <+Steffanx> So you used dongs definition of best. Thanks :)
2013-06-19T15:14:00 < Laurenceb> gangnam style
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2013-06-19T15:15:30 <+Steffanx> Why conversions are so hard on irc sometimes?
2013-06-19T15:17:15 < Laurenceb> why are
2013-06-19T15:19:37 < Gargantuasauce> we are
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2013-06-19T15:28:35 <+Steffanx> Gargantuasauce, you mean: I am.
2013-06-19T15:29:03 < Gargantuasauce> the royal we
2013-06-19T15:29:25 <+Steffanx> Why are you waiting on an air port?
2013-06-19T15:30:12 < zyp> isn't that what airports are for?
2013-06-19T15:30:27 <+Steffanx> royals dont wait on an airport
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2013-06-19T15:30:51 <+Steffanx> Meh, i should do something, but its too warm
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2013-06-19T15:33:30 < Gargantuasauce> i sold the private jet to buy a keil license
2013-06-19T15:36:30 < Laurenceb> https://maps.google.co.uk/maps?q=Lough+Erne+Resort,+Belleek+Road,+Enniskillen,+County+Fermanagh+BT93+7ED,+United+Kingdom&hl=en&client=ubuntu&channel=fs&oe=utf-8&gl=uk&geocode=FWENPgMdp5uK_w&hnear=Lough+Erne+Resort,+Belleek+Road,+Enniskillen,+County+Fermanagh+BT93+7ED,+United+Kingdom&t=h&z=15
2013-06-19T15:36:31 < rigid1> Laurenceb: ah, thanks
2013-06-19T15:36:33 < Laurenceb> epic lolz
2013-06-19T15:37:37 < Laurenceb> https://maps.google.co.uk/maps?q=Lough+Erne+Resort,+Belleek+Road,+Enniskillen,+County+Fermanagh+BT93+7ED,+United+Kingdom&hl=en&ll=54.400006,-7.693104&spn=0.019536,0.038581&client=ubuntu&channel=fs&oe=utf-8&gl=uk&geocode=FWENPgMdp5uK_w&hnear=Lough+Erne+Resort,+Belleek+Road,+Enniskillen,+County+Fermanagh+BT93+7ED,+United+Kingdom&t=h&z=15&layer=c&cbll=54.400006,-7.693104&panoid=IrAeORpWnTnB0zMTFDpV5w&cbp=12,320.96,,0,3.5
2013-06-19T15:37:40 < Laurenceb> pmsl
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2013-06-19T16:39:38 < Tectu> usb micro B is the thing I need on a device, right?
2013-06-19T16:39:41 < Tectu> A is host, eh?
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2013-06-19T16:47:54 < zyp> yep
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2013-06-19T16:53:24 < Laurenceb> n00b
2013-06-19T16:53:25 < Thorn> looks like my new 10-port usb hub might actually not be enough
2013-06-19T16:56:21 < Thorn> hopefully 3x 3Tb drives will be.
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2013-06-19T16:58:19 < gxti> so avr32 sux then? unfortunate, yesterday i found a nice usb-to-i2s design based on it. but the entire point is that someone else did all the work already so i'm too lazy to port to stm32 or whatever.
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2013-06-19T17:03:48 <+Steffanx> life is hard uh gxti?
2013-06-19T17:04:17 < Tectu> thanks zyp
2013-06-19T17:08:35 < zyp> for what?
2013-06-19T17:08:50 <+Steffanx> Anyway, except for hte RTC AVR32 doesn't suck that hard does it zyp?
2013-06-19T17:08:57 < gxti> it gets worse Steffanx, it's a 144 qfp so i might just curl up into a ball and cry
2013-06-19T17:09:09 < gxti> life is so difficult
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2013-06-19T17:10:59 < Laurenceb> stencil ftw
2013-06-19T17:11:07 < zyp> Steffanx, it doesn't?
2013-06-19T17:11:18 <+Steffanx> It was a question..
2013-06-19T17:11:40 < zyp> it's inferior to STM32 in a lot of ways if that's what you're asking
2013-06-19T17:12:54 <+Steffanx> Perhaps, but that doesnt make it 'suck'
2013-06-19T17:13:52 < zyp> what's your definition of «suck»?
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2013-06-19T17:15:17 <+Steffanx> Unusable weird crap L)
2013-06-19T17:15:41 < gxti> capable of generating a local vacuum
2013-06-19T17:16:51 < zyp> unusable is always relative to what you want to use it for
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2013-06-19T17:23:48 < trepidaciousMBR> STM32 seems to have a lot more useful hardware for less money at higher clock rates with more memory than comparable Atmel stuff, but that's just my general impression
2013-06-19T17:23:58 < trepidaciousMBR> My summary is "bloody hell Atmel stuff is expensive"
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2013-06-19T17:52:31 < dongs> uh usb to i2s
2013-06-19T17:52:33 < dongs> isnt that like
2013-06-19T17:52:36 < dongs> 10 lines of code
2013-06-19T17:52:44 < dongs> oh maybe with KEIL
2013-06-19T17:53:46 < gxti> troll status: failing
2013-06-19T17:54:58 < dongs> incorrect
2013-06-19T17:56:05 < Laurenceb> maybe in linux
2013-06-19T17:56:09 < Laurenceb> antitrolled
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2013-06-19T18:30:11 < Laurenceb> http://ukhas.org.uk/general:ukhasconference2013
2013-06-19T18:30:14 < Laurenceb> for ukians
2013-06-19T18:36:17 <+Steffanx> Not for non-ukians :(
2013-06-19T18:36:33 <+Steffanx> Not that it looks THAT interesting. Pi.. Pi.. pico
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2013-06-19T22:41:53 < manchild> http://www.youtube.com/watch?v=bKgf5PaBzyg&feature=player_embedded
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2013-06-19T22:44:43 <+Steffanx> I won.. I won Tectu !
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2013-06-19T22:47:22 <+Steffanx> Actually i was a bit off.. too bad
2013-06-19T22:48:08 <+Steffanx> http://pastebin.com/3EPmV0Tj haha Laurenceb / manchild
2013-06-19T22:48:44 < manchild> lol
2013-06-19T22:49:40 < manchild> i find the best stuff on the nets
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2013-06-19T23:00:14 < karlp> so, it has 2157 views,
2013-06-19T23:00:18 < karlp> and 15189 likes?
2013-06-19T23:00:21 < karlp> ....
2013-06-19T23:00:23 <+Steffanx> youtube :)
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2013-06-19T23:28:44 < Ranewen> best vid
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--- Day changed Thu Jun 20 2013
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2013-06-20T00:10:51 < Laurenceb_>  /msg NickServ identify compost123
2013-06-20T00:11:37 < Ranewen> yeah
2013-06-20T00:11:42 < Laurenceb_> fail
2013-06-20T00:13:49 < gxti> your password is terrible
2013-06-20T00:13:51  * Laurenceb_ changes password
2013-06-20T00:14:25  * Laurenceb_ logs ssh attempts
2013-06-20T00:15:35 < gxti> good luck, i'm behind 7 proxies
2013-06-20T00:15:42 < Laurenceb_> why i use different passwords for irc :P
2013-06-20T00:16:00 < Laurenceb_> really Michael Tharp??
2013-06-20T00:16:09 < gxti> good job, you can read /whois
2013-06-20T00:16:37 < gxti> also spoiler: i'm not actually behind any proxies
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2013-06-20T00:20:37 < Laurenceb_>  Ranewen!~Ranewen@78-0-232-29.adsl.net.t-com.hr failed to login
2013-06-20T00:20:54 < Ranewen> X)
2013-06-20T00:21:57 < Ranewen> i thought you see what i wrote for pass
2013-06-20T00:26:26 < gxti> that would be poor security practice
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2013-06-20T01:14:09 < BrainDamage> no he can't
2013-06-20T01:14:18 < BrainDamage> pw flies over net hashed
2013-06-20T01:17:03 < karlp> see, here's me typing my password in: ********
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2013-06-20T01:18:52 < gxti> that's not how it works BrainDamage
2013-06-20T01:19:02 < BrainDamage> you can set auth request type
2013-06-20T01:19:15 < BrainDamage> and one of them, sends only hash of logic
2013-06-20T01:19:17 < BrainDamage> login*
2013-06-20T01:19:44 < BrainDamage> exactly to prevent reverse lookup from the host to know the real pw
2013-06-20T01:20:04 < BrainDamage> because users tend to reuse the pw dumfully
2013-06-20T01:20:08 < gxti> passwords are stored as hashes yes, but they are not transmitted that way
2013-06-20T01:20:20 < BrainDamage> in one mode that I know, even sent
2013-06-20T01:20:31 < gxti> there are some that do but clearly Laurenceb_ was not using one
2013-06-20T01:20:32 < BrainDamage> altough I am unrest, on painkillers and with tootache
2013-06-20T01:20:44 < BrainDamage> so I don't exclude having my memory fucked up
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2013-06-20T01:36:46 < Laurenceb_> wohoo
2013-06-20T01:36:52 < Laurenceb_> another thesis chapter finished
2013-06-20T01:40:14 < Laurenceb_> scientific writing makes me even more insane than normal
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2013-06-20T01:43:16 < karlp> awesome, pic32 compiler installer has a --prefix option, which it then happily ignores
2013-06-20T01:45:02 < karlp> meh, creating the path it insists on using, now it says, nope, must be root.
2013-06-20T01:45:12 < Laurenceb_> all the references seem to overwrite my short term memory...
2013-06-20T01:45:59 < Laurenceb_> at this rate im going to try and cite my food or something
2013-06-20T01:49:08 <+Steffanx> You can do scientific writing?
2013-06-20T01:49:13 <+Steffanx> Dongs-style?
2013-06-20T01:49:30 < emeb> Hah! https://twitter.com/HarpyFeathers/status/347006840703418368/photo/1
2013-06-20T01:52:09 <+Steffanx> emeb emeb.. where and when did it go wrong?
2013-06-20T01:52:19 <+Steffanx> Was it Laurenceb_ ? Infected?
2013-06-20T01:52:54 <+Steffanx> Anyway, please say it's fake
2013-06-20T01:53:02 < emeb> Steffanx: It's actually not quite as funny as that - a few years ago some jokers were leaving flashlights laying around with explosives inside.
2013-06-20T01:53:22 < emeb> Passers-by would pick them up, flip the switch and *boom* lose a hand.
2013-06-20T01:53:45 < karlp> still funny.
2013-06-20T01:53:46 <+Steffanx> :S
2013-06-20T01:53:49 < karlp> still not newsworthy
2013-06-20T01:53:51 < emeb> I don't think they ever figured out who was doing it.
2013-06-20T01:54:07 < emeb> karlp: you don't know what a low bar "newsworthy" is here.
2013-06-20T01:54:21 < karlp> I can only presume it has continued to lower since I left :)
2013-06-20T01:54:43 < emeb> Bottom of barrel dangerously overscraped.
2013-06-20T01:57:18 <+Steffanx> karlp has been in the us too?
2013-06-20T01:59:44 < karlp> sure, lived in san hosay for nearly 4 years
2013-06-20T01:59:56 < karlp> you've done a bad job of stalking me if you hadn't found that out before.
2013-06-20T01:59:58 < emeb> poor guy.
2013-06-20T02:00:07 < karlp> good pay for a new grad :)
2013-06-20T02:00:12 < karlp> but yeah, couldn't stay.
2013-06-20T02:00:20 < ds2> why did you leave?
2013-06-20T02:00:22 < BrainDamage> the same happened here
2013-06-20T02:00:37 < karlp> .... americah! fuk yeah! is what happened....
2013-06-20T02:00:47 < BrainDamage> altough the guy built into pens, kinder suprises, and other kid friendly objects
2013-06-20T02:00:56 < BrainDamage> then proceeded to leave them near schools
2013-06-20T02:01:08 < BrainDamage> he was arrested and was a ... EE
2013-06-20T02:01:27 < BrainDamage> I'm confident Laurenceb_ has potential to follow that lead
2013-06-20T02:02:19 <+Steffanx> Everyone in here BrainDamage.. every single one
2013-06-20T02:03:45 < BrainDamage> not true
2013-06-20T02:03:53 < BrainDamage> that's too small scale for my likes
2013-06-20T02:04:04 < BrainDamage> I'd go straight for chemical weapons or dirty bombs
2013-06-20T02:04:18 <+Steffanx> Are the painkillers kicking in again?
2013-06-20T02:05:26 < BrainDamage> I think I'd be of same opinion even without mind altering drugs
2013-06-20T02:05:34 < BrainDamage> either go spectacular, or don't at all
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2013-06-20T02:10:53 < upgrdman> having some problems with code that works fine in main() but hangs in an ISR. I'm assuming there are limits to what you can do in an ISR, but where are those limits specified? f0 if that matters.
2013-06-20T02:12:43 <+Steffanx> Limits as in .. time you can be in a ISR or memory use? There are no limits afaik..
2013-06-20T02:12:57 <+Steffanx> Except for the stack size etc.
2013-06-20T02:14:14 < karlp> did you try and do anything like print to the console, using a lower priority interrupt? or delay based on systick or anything like that?
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2013-06-20T02:32:21 < upgrdman> actually I'm just trying to us i2c in an exti isr
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2013-06-20T02:32:32 < upgrdman> to read from a gyro
2013-06-20T02:33:05 < upgrdman> i created six uint8_t's in the ISR. that shouldn't be a problem, right?
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2013-06-20T03:13:53 < dongs> sup blogs
2013-06-20T03:14:11 < R2COM> stuff
2013-06-20T03:14:27 < dongs> ah, its you
2013-06-20T03:15:27 < dongs> http://yuq.me/users/19/866/zTyPlatFnH.png is dat sum SSD
2013-06-20T03:15:59 < R2COM> hm
2013-06-20T03:16:09 < R2COM> dont they look like memory packs?
2013-06-20T03:16:27 < BrainDamage> looks more like a rambank
2013-06-20T03:16:31 < karlp> what's the inside of a fusion io board look like?
2013-06-20T03:16:36 < BrainDamage> with heatsinks on ram
2013-06-20T03:16:46 < ossifrage> I just tried that stm32 config tool, pretty much completely useless...
2013-06-20T03:16:54 < dongs> ossifrage: the java shit?
2013-06-20T03:16:56 < dongs> microxeploer?
2013-06-20T03:17:07 < BrainDamage> microexploder
2013-06-20T03:17:09 < ossifrage> yeah, it is useless
2013-06-20T03:17:12 < dongs> how so?
2013-06-20T03:17:21 < karlp> nvm, fusionio is a pcie card, not a rack slot thing like that
2013-06-20T03:17:21 < dongs> i find it fairly useful
2013-06-20T03:17:43 < ossifrage> it doesn't seem to like letting you only use some pins of a unit
2013-06-20T03:18:07 < R2COM> http://www151.lunapic.com/do-not-link-here-use-hosting-instead/137168728963566?4200240900
2013-06-20T03:19:10 < qyx_> whats taht
2013-06-20T03:19:27 < R2COM> pcbs
2013-06-20T03:19:39 < BrainDamage> a url to a picture
2013-06-20T03:19:56 < BrainDamage> there's some stripline on the pcb, so I guess high freq stuff
2013-06-20T03:20:02 < R2COM> dunno, just googled any picture paste and used first
2013-06-20T03:20:12 < R2COM> since imgur is fucked up
2013-06-20T03:20:27 < R2COM> those are filters, attenuator boards, freq. synthesiz boards
2013-06-20T03:20:29 < R2COM> amplifiers
2013-06-20T03:20:37 < qyx_> ah
2013-06-20T03:20:39 < qyx_> so pcbs
2013-06-20T03:20:41 < dongs> um
2013-06-20T03:20:44 < dongs> why not just use imgur.com
2013-06-20T03:20:47 < dongs> like all the cool kids
2013-06-20T03:21:00 < R2COM> its not uploading. dont know.
2013-06-20T03:21:09 < BrainDamage> no distributed filters? :(
2013-06-20T03:21:09 < dongs> reddit fags must have taken it down
2013-06-20T03:21:32 < BrainDamage> ( altough I know that stripline sub sucks for high Q filters due to high atten )
2013-06-20T03:21:39 < R2COM> sure
2013-06-20T03:21:45 < R2COM> it doesnt suck
2013-06-20T03:21:52 < R2COM> if done in a right pcb
2013-06-20T03:22:02 < R2COM> so your knowledge is kinda off dude.
2013-06-20T03:22:05 < BrainDamage> ok, but "right" can get pretty expensive
2013-06-20T03:22:10 < R2COM> nop.
2013-06-20T03:22:13 < R2COM> not *very*
2013-06-20T03:22:20 < R2COM> it also depends on filter type
2013-06-20T03:22:34 < R2COM> I did nice filters on fr408/6 materials
2013-06-20T03:22:39 < R2COM> microwave ones
2013-06-20T03:22:41 < BrainDamage> define "nice"
2013-06-20T03:23:06 < R2COM> nice means the shape response was good, low s11, not very high loss  (7dB maybe in passband)
2013-06-20T03:23:09 < BrainDamage> 80dBtransition over fc/10 bandwith transition?
2013-06-20T03:23:20 < R2COM> what?
2013-06-20T03:23:22 < BrainDamage> with 5th order
2013-06-20T03:23:37 < R2COM> it depends on a filter
2013-06-20T03:23:51 < BrainDamage> I am giving you specs for a filter's rejectiong :P
2013-06-20T03:24:27 < R2COM> I dont need your specs. I believe in what I used to do, simulate, get fabbed, and check with bench tools
2013-06-20T03:24:42 < BrainDamage> oh, that's a filter I designed
2013-06-20T03:24:55 < R2COM> well... as I said, it depends on filter
2013-06-20T03:25:03 < BrainDamage> duplexer @5 GHz
2013-06-20T03:25:04 < R2COM> some filters on more poor materials behave worse than others
2013-06-20T03:26:05 < R2COM> usually ones I experimented with, behave better, like the one looking like "stepped" filter
2013-06-20T03:26:14 < R2COM> the only bad thing is, its bigger
2013-06-20T03:26:45 < R2COM> and another thing with poor material and distributed filter is, bigger loss in passband.. but thats not much of a big deal actually
2013-06-20T03:27:06 < R2COM> since signal can be amplified
2013-06-20T03:27:17 < BrainDamage> I was only bothered by phase distortion inband more than attenutation
2013-06-20T03:27:27 < BrainDamage> ( it was in the requirements )
2013-06-20T03:27:27 < R2COM> what important is, to get a nice s11 in your range, and I did manage to get it with cheaper PCBs
2013-06-20T03:27:35 < R2COM> (not on a Rogers ones... cheaper ones)
2013-06-20T03:28:32 < R2COM> and by thew ay, its not *that* expencive to get good material
2013-06-20T03:29:40 < R2COM> what really expencive is..mixed PCBs
2013-06-20T03:29:43 < BrainDamage> considering my budget was basically ... nonexistant, yes it was :p
2013-06-20T03:29:45 < R2COM> with different materials..
2013-06-20T03:30:10 < R2COM> the ones used for example sometimes in measurement equipment, or expencive spectrum analyzers
2013-06-20T03:30:22 < R2COM> those pcbs really cost a lot
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2013-06-20T04:17:23 < upgrdman_> anyone here played with the stm L3GD20 gyro?
2013-06-20T04:18:14 < upgrdman_> it has an INT/DRDY pin. i want to use it as an external interrupt. i set the sample rate to 95hz, so i would expect 95 pulses on that pin per second. but i only get a pulse if i manually read the output registers.
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2013-06-20T04:18:25 < dongs> yes
2013-06-20T04:18:31 < dongs> you are supposed to read the fucking registers
2013-06-20T04:18:34 < dongs> in the interrupt
2013-06-20T04:18:36 < dongs> thats the point
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2013-06-20T04:18:53 < dongs> if it interrupts you and you dont read the data, whats the point?
2013-06-20T04:19:00 < upgrdman_> I'm trying to
2013-06-20T04:19:14 < upgrdman_> but it won't put a pulse on DRDY for each sample
2013-06-20T04:19:14 < dongs> i dont remember if it has fifo mode
2013-06-20T04:19:19 < dongs> it will
2013-06-20T04:19:22 < upgrdman_> it does, but i turned the fifo off
2013-06-20T04:19:28 < dongs> ok then you ahve to read it out
2013-06-20T04:19:31 < dongs> before new data will be put there
2013-06-20T04:20:01 < upgrdman_> its in bypass mode. its supposed to just overwrite old data if you don't read it quick enoughj
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2013-06-20T04:26:15 < upgrdman_> tried fifo mode. DRDY is still fucked
2013-06-20T04:27:11 < upgrdman_> it ONLY outputs a pulse when i manually read the gyro output. so it will never trigger my ext interrupt isr.
2013-06-20T04:27:34 < upgrdman_> if i read ~1/sec, i get one pulse per second. not even close to 95hz
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2013-06-20T04:28:09 < dongs> um, how about read once to start it then do proper reads in drdy interrupty
2013-06-20T04:28:26 < upgrdman_> tried that. i get exactly one pulse on drdy
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2013-06-20T04:35:03 < upgrdman_> manually reading the output, or triggering the exti, causes one read with one pulse on drdy.
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2013-06-20T04:39:27 < upgrdman_> if i do a while(1) in main and constantly trigger my exit, drdy gives 95hz, and my isr is triggers several hundred hz
2013-06-20T04:39:34 < upgrdman_> trigger my exti*
2013-06-20T04:39:38 < dongs> think F2/F4 has enough memory/cpu bandwidth to receive ~20mbit of shit over SPI, packetize it as RTP, and output to a wifi SoC?
2013-06-20T04:40:15 < gxti> makin a video telephone or something?
2013-06-20T04:40:33 < dongs> no, just data
2013-06-20T04:42:03 < dongs> i mean it d oesnt have to process the data or anything
2013-06-20T04:42:09 < dongs> just receive + packetize + dump to wifi
2013-06-20T04:42:18 < dongs> im thinking it might be cutting it close
2013-06-20T04:46:38 < dongs> TI CC3000 Interfaces over 4-wire serial peripheral interface (SPI) with any microcontroller, or processor at clock speed
2013-06-20T04:46:41 < dongs> up to16 MHz
2013-06-20T04:46:45 < dongs> so 16mbit max??
2013-06-20T04:46:49 < dongs> what the hell useless.
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2013-06-20T05:27:10 < emeb_mac> probably even less than 16mbps - I'd bet there's overhead in there.
2013-06-20T05:33:14 < R2COM1> hmm
2013-06-20T05:33:17 < R2COM1> fuck 3D view
2013-06-20T05:33:37 < R2COM1> everytime I decide to mess with it it just makes my work go slower (work in getting PCB done)
2013-06-20T05:36:11 < dongs> ur slower
2013-06-20T05:36:19 < emeb_mac> what software?
2013-06-20T05:36:46 < dongs> i think he uses some weird shit
2013-06-20T05:36:53 < R2COM1> dongs: mm.. no. u r.
2013-06-20T05:37:03 < R2COM1> I use Allegro PCB
2013-06-20T05:37:10 < R2COM1> weird shit is your dicktrace
2013-06-20T05:37:18 < R2COM1> which cant route differentials and do length adjusting
2013-06-20T05:37:26 < R2COM1> so its like +1 level upgrade from Kicad
2013-06-20T05:37:30 < R2COM1> lol
2013-06-20T05:37:33 < R2COM1> use Kicad dude
2013-06-20T05:37:35 < R2COM1> same shit :P
2013-06-20T05:37:41 < dongs> kikecad sucks
2013-06-20T05:37:43 < dongs> hard
2013-06-20T05:37:48 < dongs> at least dicktrace is usable
2013-06-20T05:37:57 < R2COM1> yeah but no fucking features
2013-06-20T05:38:05 < R2COM1> its like...trace yuourself and thats it.
2013-06-20T05:38:22 < dongs> noone using dicktrace will be doing differential routing
2013-06-20T05:38:56 < R2COM1> I guess next upgrade is what.. that japanese CAD
2013-06-20T05:39:00 < R2COM1> and then Altium probably
2013-06-20T05:39:03 < dongs> cadstar?
2013-06-20T05:39:03 < dongs> pfft.
2013-06-20T05:39:04 < dongs> no.
2013-06-20T05:39:08 < dongs> ill just deal with altium
2013-06-20T05:39:25 < R2COM1> which makes you buy their shit together with layout+schem
2013-06-20T05:39:36 < R2COM1> by shit I mean their useless fpga kit and simulator
2013-06-20T05:39:43 < dongs> altium?
2013-06-20T05:39:44 < dongs> yeah
2013-06-20T05:40:02 < dongs> if they dump that they'd probably have more sales.
2013-06-20T05:40:07 < R2COM1> they better remove that crap, and lower price, and I guess more people will be willing to buy Altium then
2013-06-20T05:40:11 < dongs> i dont want simulation/fpga/C compiler/etc
2013-06-20T05:40:12 < R2COM1> right
2013-06-20T05:40:34 < R2COM1> I think its one of their dumbass managers did that
2013-06-20T05:40:41 < R2COM1> there were discussion online somewhere
2013-06-20T05:40:48 < dongs> but then they'd have nowhere to push their nanoboard shit
2013-06-20T05:40:56 < R2COM1> who cares
2013-06-20T05:41:04 < R2COM1> instead they could put power to make software better
2013-06-20T05:41:17 < R2COM1> or hire more professionals to make better software for layout+schem+router maybe
2013-06-20T05:41:35 < R2COM1> noone wants that fucking nanoboard
2013-06-20T05:41:59 < R2COM1> professional developers usually buy FPGA boards with FMC connectors...and connect it to their shit
2013-06-20T05:42:51 < R2COM1> I do design breakout boards from my equipment with FMC to plug to fpga sometimes, very convenient
2013-06-20T05:43:43 < dongs> The NanoBoard 3000 is not your average FPGA-based development board. FOr a start, you don't need any FPGA design experience to use it!
2013-06-20T05:43:43 < R2COM1> I'm looking now at nanoboard
2013-06-20T05:43:56 < R2COM1> lol....
2013-06-20T05:43:59 < R2COM1> haha
2013-06-20T05:44:13 < dongs> It's sophisticated on-board controller works intimately wiht the supplied Altium Designer software to let you easily and graphically construct FPGA-based embedded systems.
2013-06-20T05:44:24 < R2COM1> if someone doesnt have fpga experience, he better not tries to play with any shit like that before serious study, nanoboard wont make his "design" better
2013-06-20T05:44:44 < R2COM1> meh
2013-06-20T05:45:33 < R2COM1> then wtf to use resources of expencive fpga for someone who doesnt know shit about it and just wants to plug in his crappy C or whatever to get design done?
2013-06-20T05:45:51 < R2COM1> he can then just go and use some sort of embedded fast microcontroller/processor board or whatever
2013-06-20T05:45:51 < dongs> And with a variety of stylish, strong, modular enclosures available, the Nanoboard 3000 is even ready to be deployed in the field as a fully-connected, smart device eliminating the need to go through a full manufacture c ycle.
2013-06-20T05:46:28 < dongs> 1) buy nanoboard 3000 2) code shitty C 3) buy shiny cases 4) ??? 5) profit!
2013-06-20T05:46:35 < dongs> who the fuck needs STM32
2013-06-20T05:46:38 < dongs> this shit is the solution
2013-06-20T05:46:42 < R2COM1> well
2013-06-20T05:47:25 < R2COM1> you might be right.
2013-06-20T05:47:30 < R2COM1> :)
2013-06-20T05:48:36 < R2COM1> oh
2013-06-20T05:48:37 < R2COM1> but
2013-06-20T05:48:40 < R2COM1> you forgot 6)
2013-06-20T05:48:57 < R2COM1> 6) the UAV got landed by Irans air defence. fail.
2013-06-20T05:50:27 < R2COM1> or.. if the product is not for *that* kinda stuff.. yeah. who gives a shit.
2013-06-20T05:50:42 < R2COM1> get it done fast like a pro! quickly turn little work into huge profit
2013-06-20T05:50:44 < R2COM1> :)
2013-06-20T05:51:24 < dongs> the real question is how muchg of your code was in the iran UAV
2013-06-20T05:52:46 < R2COM1> its not a question.
2013-06-20T05:53:19 < R2COM1> the real point was (in case if you missed it), that serious stuff is not being engineered that way...
2013-06-20T05:53:38 < dongs> pfft
2013-06-20T05:54:32 < R2COM1> but yea.. if you can get it done in easy way and turn into profit, sure its good
2013-06-20T05:56:02 < dongs> whats teh market for turning FPGA shit into products tho
2013-06-20T05:56:11 < dongs> i mena you can use a $20 FPGA or $5 chinese lunix SoC
2013-06-20T05:56:26 < R2COM1> true..
2013-06-20T06:06:19 < dongs> R2COM1: can y ou look at SEM/dyed layer pics and tell what stuff is there? i.e. what gates/wahtever
2013-06-20T06:06:37 < dongs> i mean, is it possible to tell or unlikely
2013-06-20T06:15:12 < R2COM1> I maybe can,not sure sometimes hard to tell
2013-06-20T06:15:14 < R2COM1> show anyhow
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2013-06-20T06:18:29 < dongs> sec
2013-06-20T06:18:36 < dongs> http://i.imgur.com/0zXtcun.jpg
2013-06-20T06:18:42 < dongs> the circled shit is wehre the other layers are shown
2013-06-20T06:18:49 < dongs> wtf is that squiggly crap
2013-06-20T06:19:11 < R2COM1> heh
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2013-06-20T06:19:32 < dongs> are tehy just swapping lines and changing layers?
2013-06-20T06:19:49 < R2COM1> describe what you mean squiggly?
2013-06-20T06:19:52 < R2COM1> lines endings?
2013-06-20T06:20:07 < dongs> i.e. the thing where black cursor is , in the left windows
2013-06-20T06:20:15 < dongs> that looks like G
2013-06-20T06:20:16 < dongs> or whatever
2013-06-20T06:20:21 < dongs> on layer2
2013-06-20T06:20:29 < dongs> thats just traces, right? nothing else there?
2013-06-20T06:20:29 < R2COM1> I see
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2013-06-20T06:20:50 < R2COM1> I guess thats where you zoomed at CELL right?
2013-06-20T06:21:27 < R2COM1> is that the thing, of which the Whole Huge array consists of?
2013-06-20T06:21:37 < R2COM1> and you zoomed to this single cell?
2013-06-20T06:21:39 < dongs> ya
2013-06-20T06:21:46 < R2COM1> well then its bunch of transistors
2013-06-20T06:21:48 < R2COM1> something like
2013-06-20T06:21:50 < dongs> the red square
2013-06-20T06:21:54 < R2COM1> two inverters reversely connected
2013-06-20T06:22:00 < dongs> is like the area
2013-06-20T06:22:23 < R2COM1> and then you run trace from gates of first inverter, to output of another inverter
2013-06-20T06:22:25 < R2COM1> and vice versa
2013-06-20T06:22:29 < R2COM1> thats what typically SRAM cell is
2013-06-20T06:22:46 < dongs> this is not in sram circuits area tho
2013-06-20T06:22:53 < R2COM1> yeah but its memory you said?
2013-06-20T06:22:55 < dongs> this is related to ROM either address or data lines
2013-06-20T06:23:02 < R2COM1> ok
2013-06-20T06:23:37 < R2COM1> its just I cant recognize poly layer there
2013-06-20T06:23:41 < R2COM1> from this pic
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2013-06-20T06:24:30 < R2COM1> but if thats where you zoomed in, one cell out of many, looks like its the memory cell, composed from inverters to store data
2013-06-20T06:24:56 < R2COM1> and line running out of it, most likely is a line connecting to gate of acces transistor to the decoder
2013-06-20T06:25:10 < R2COM1> so when decoder gets line HIGH, access transistor reads out  value from inverters
2013-06-20T06:25:35 < dongs> im just trinyg to figure out what the difference between say regular trace and some sorta logic or something that acutally does something
2013-06-20T06:25:48 < dongs> for example this shit http://i.imgur.com/DOC7Gx2.jpg
2013-06-20T06:26:03 < dongs> the square is the center of that weird square tooth loking thing
2013-06-20T06:26:07 < R2COM1> if you see something like long line, with bents etc.. most likely its just metal (or sometimes Poly layer)
2013-06-20T06:26:09 < dongs> like wtf is that?
2013-06-20T06:27:26 < R2COM1> on left is zoomed verson right
2013-06-20T06:27:27 < R2COM1> hm
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2013-06-20T06:27:34 < dongs> not zoomed, its another layer
2013-06-20T06:27:37 < dongs> i.e. large pic is layer 1
2013-06-20T06:27:39 < dongs> you cant see shit in it
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2013-06-20T06:27:41 < dongs> just some wires
2013-06-20T06:27:49 < R2COM1> yeah
2013-06-20T06:27:50 < R2COM1> well
2013-06-20T06:28:00 < R2COM1> those top and bottom thick metals most likely vdd vss lines
2013-06-20T06:28:01 < dongs> zoom level is same
2013-06-20T06:28:23 < dongs> sure. it doesnt evne look like anything is connected to them tho
2013-06-20T06:28:29 < R2COM1> and again cant notice poly here
2013-06-20T06:28:32 < R2COM1> well
2013-06-20T06:28:32 < dongs> hm
2013-06-20T06:28:36 < dongs> there's layer 5
2013-06-20T06:28:39 < dongs> but it looks dumb
2013-06-20T06:28:52 < R2COM1> higher layer you wont see poly
2013-06-20T06:29:13 < dongs> http://i.imgur.com/qpRzRNr.jpg
2013-06-20T06:29:14 < R2COM1> but that thing on top left
2013-06-20T06:29:16 < dongs> this is layer 5
2013-06-20T06:29:17 < dongs> of same area
2013-06-20T06:29:26 < R2COM1> looks like typica connection of several transistors, to form inverter
2013-06-20T06:29:32 < R2COM1> between vdd and vss lines
2013-06-20T06:29:39 < dongs> like how do you tell its a transistor?
2013-06-20T06:31:08 < R2COM1> well... typically for example, if one wants to realize transistor for ecxample, its Drain and Source, and in middle is the poly...usually for higher speed circuits, one realizes transistor with many "fingers", in that case you will have several common "drains" and "sources", as a result you will have structure which looks something like *a line comes from vdd and connects to several places from tip*, then similar line coming from vss 
2013-06-20T06:31:19 < R2COM1> and thats what I noticed on top left which "kinda" looks like that
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2013-06-20T06:32:10 < dongs> hm
2013-06-20T06:33:01 < R2COM1> for example transistor splitted in 4 pieces will have 4 poly lines, and drain-source pairs around each line
2013-06-20T06:33:11 < R2COM1> and if drain of that transistor according to schematic goes to VDD
2013-06-20T06:33:26 < R2COM1> you will notice in layouts something like: one line (common line) going up to thick line
2013-06-20T06:33:27 < dongs> wtf does poly layer look like
2013-06-20T06:33:29 < dongs> is it not one of those?
2013-06-20T06:33:50 < R2COM1> you knows its kinda hard to tell, it all so much depends on process/technology/ways pictures were taken etc..
2013-06-20T06:35:48 < R2COM1> here is for example snapshot from some generic design online http://gibbs.eng.yale.edu/drupal/files/inv_pins.jpg
2013-06-20T06:35:54 < R2COM1> that red is poly
2013-06-20T06:36:00 < R2COM1> but thats a cad view
2013-06-20T06:36:15 < R2COM1> real picture can look very differently depending on many factors
2013-06-20T06:36:39 < R2COM1> this specific picture though, shows transistor with one finger only (one poly line, red line)
2013-06-20T06:37:06 < R2COM1> it could be designed for higher speed, split in many fingers, then you'd see more lines going to vdd
2013-06-20T06:37:18 < dongs> whats "high"?
2013-06-20T06:37:21 < R2COM1> or other stuff could be added around it, which has its drains going to vdd..
2013-06-20T06:37:39 < dongs> this stuff is probly not more than 10-20mhz
2013-06-20T06:37:59 < R2COM1> by high I mean, a transistor which can drive bigger capacitive loads, in that case it has to be bigger in size, typically its achieved by paralellizing it (or increasing number of fingers as I mentioned)
2013-06-20T06:38:04 < dongs> oh
2013-06-20T06:38:09 < dongs> right
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2013-06-20T06:39:59 < R2COM1> I was just wondering on that line on top left going through thick line down
2013-06-20T06:40:11 < R2COM1> not sure if its higher level
2013-06-20T06:40:25 < R2COM1> or maybe it is
2013-06-20T06:40:32 < R2COM1> on your last pic
2013-06-20T06:41:19 < dongs> i duno what order of layers is
2013-06-20T06:41:24 < dongs> i guess 1/2/3/ is from top down
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2013-06-20T06:43:55 < R2COM1> usually more stuff is seen on lower levels
2013-06-20T06:44:09 < R2COM1> because of transistors and their source/drain active contacts
2013-06-20T06:44:18 < R2COM1> which will mostly look like "vias" or dark dots
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2013-06-20T06:46:07 < dongs> i think vias here are white
2013-06-20T06:46:45 < R2COM> yeah but then I see those dark squares on "vdd" line
2013-06-20T06:46:59 < R2COM> those might be different vias
2013-06-20T06:47:37 < R2COM> sometimes different vias look differently,for example via which connects two metals on different layers looks one way, and via which connects Metal-1, to POLY looks completely another way
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2013-06-20T10:31:46 < Wipster> So I think  have messed up my interrupt / task priority on my f4 running freertos 7.4.2. I have a task which sends out some data on USART to a GSM modem and waits for a second for the reply, which has an rx interrupt and plops the data into a queue. If I set a breakpoint in the code before it sends the at command then run it, it sees the response. If I run it straight, I dont get the response. And this is only with the modem not ec
2013-06-20T10:31:46 < Wipster> hoing what I am sending. NVIC group is 4, the rx priority is 5 (max syscall) and tickless idle is off. Any thoughts?
2013-06-20T10:33:21 < dongs> um
2013-06-20T10:33:27 < dongs> sounds ilke some feertos  fuckup
2013-06-20T10:35:43 < Wipster> yeh I have messed something up... but Im not sure what
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2013-06-20T10:48:51 < dongs> whats everyone's favorite resistor network style convex or concave
2013-06-20T10:54:11 < R2COM> http://www.niccomp.com/help/presentations/NRSN_compare_1103.pdf
2013-06-20T10:58:00 < dongs> that was 1st google hit
2013-06-20T10:58:01 < dongs> for that.
2013-06-20T10:59:05 < dongs> great
2013-06-20T10:59:09 < dongs> why the fuyck am i using concave  on my shit
2013-06-20T10:59:11 < dongs> fixing asap
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2013-06-20T11:03:04 < dongs> haha at their slogan
2013-06-20T11:03:07 < dongs> SERIOUSLY PASSIVE(TM)
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2013-06-20T11:04:27 <+Steffanx> tm ..
2013-06-20T11:04:47 < dongs> stackpole wins again at cost
2013-06-20T11:05:01 < dongs> but not at qty
2013-06-20T11:11:54 < R2COM> most of the time i cant find resistor array with needed specs for me
2013-06-20T11:12:02 < R2COM> other than resistance+package
2013-06-20T11:12:11 < R2COM> and have to use single resistors
2013-06-20T11:12:31 < R2COM> most of them are 100ppm as well..
2013-06-20T11:13:58 < dongs> lol..
2013-06-20T11:14:08 < dongs> do you have to anal like every compnent you pick
2013-06-20T11:14:43 < R2COM> yeah
2013-06-20T11:15:40 < dongs> fucking panasonic
2013-06-20T11:15:50 < dongs> doesnt show pitch beteen pads
2013-06-20T11:15:58 < dongs> on their resistor networsk
2013-06-20T11:16:51 < R2COM> look for step model
2013-06-20T11:17:15 < dongs> how does that help
2013-06-20T11:18:00 < R2COM> you can start off with approximate pitch, and correct after model application
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2013-06-20T11:24:46 < R2COM> shit aghain Im late for sleep
2013-06-20T11:25:41 < Tectu> skip it then
2013-06-20T11:27:09 < R2COM> no. I skipped already alot for this week
2013-06-20T11:27:17 < R2COM> daytime work might be unproductive then
2013-06-20T11:27:53 < R2COM> the only thing I skipped is classes when I was late for school being a kid
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2013-06-20T12:31:07 < Tectu> USB lanes should be in parallel, right?
2013-06-20T12:31:19 < Tectu> and I assume that USB_FS work with 50mm?
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2013-06-20T13:46:54 <+Steffanx> Tectu, trial and error.. ( it should work )
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2013-06-20T14:23:06 < Tectu> Steffanx, hmm... trial & error is expensive when you order PCBs
2013-06-20T14:34:31 < jpa-> Tectu: USB FS works with baling wire
2013-06-20T14:35:08 < jpa-> but yeah, optimally keep them somewhat same length and the distance between them somewhat constant
2013-06-20T14:35:12 < Tectu> can you define baling?
2013-06-20T14:35:26 < Tectu> okay, that must be enough in my case then :)
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2013-06-20T14:37:56 < karlp> Tectu: he means you can run FS on just about anything
2013-06-20T14:38:10 <+Steffanx> True, true, but the first revision is never good anyway Tectu :)
2013-06-20T14:38:30 < karlp> baling wire is wire used for making "bricks" of hay, or any other loose farm product.
2013-06-20T14:39:38 < Tectu> aaah :)
2013-06-20T14:39:41 < Tectu> thanks
2013-06-20T14:42:44 < Tectu> so I got some more space on a board I am building (signal generator). I thought it's always nice to have some flash or eeprom arround, no?
2013-06-20T14:42:49 < Tectu> would you go for flash or eeprom these days?
2013-06-20T14:42:55 <+Steffanx> what for?
2013-06-20T14:42:56 < Tectu> just some general purpose none-volatile memory
2013-06-20T14:42:57 <+Steffanx> settings?
2013-06-20T14:43:03 < Tectu> jup, like that
2013-06-20T14:43:32 <+Steffanx> eeprom i guess
2013-06-20T14:43:40 < Tectu> why so?
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2013-06-20T14:43:47 <+Steffanx> unless you want like a storage of > a few mbyte :)
2013-06-20T14:43:53 <+Steffanx> -like
2013-06-20T14:44:31 <+Steffanx> Why, dont know, .. i dont think many use flash for basic settings storage
2013-06-20T14:45:11 <+Steffanx> Perhaps someone has a more educated reason
2013-06-20T14:45:13 < Tectu> well, how expensive is some sane SPI flash?
2013-06-20T14:45:14 <+Steffanx> *argument
2013-06-20T14:46:01 <+Steffanx> digikey knows
2013-06-20T14:46:21 < karlp> Tectu: i2c eeprom with mac address gives you a nice serial number for free plus some storage, for ~$0.25 or so
2013-06-20T14:46:41 < Tectu> karlp, "with mac address"?  huh?
2013-06-20T14:47:48 < Tectu> wow, you can get some 128M flash for 5$
2013-06-20T14:48:27 < jpa-> you can get 4 GB microsd for 5$ :)
2013-06-20T14:48:30 < Tectu> are there any disadventages of flash (Vs. eeprom) ?
2013-06-20T14:48:34 < jpa-> many
2013-06-20T14:48:43 < jpa-> slow, complex, limited write cycles
2013-06-20T14:48:58 < Tectu> complex?
2013-06-20T14:49:05 < Tectu> an SPI flash is slower than an I²C eeprom?
2013-06-20T14:49:16 < Tectu> also, eeprom has limited write cycles as well?
2013-06-20T14:49:21 < Tectu> aren't they even lower?
2013-06-20T14:49:24 < jpa-> if you use a raw flash chip, you need to manually handle erasing the sectors before writing to them etc.
2013-06-20T14:49:35 < jpa-> eeprom has usually a million cycles, flash like 10000
2013-06-20T14:49:52 < jpa-> flash erase takes looooong, otherwise they are about the same speed as eeprom
2013-06-20T14:50:28 < Tectu> i2c eeprom it is :)
2013-06-20T14:50:33 < Tectu> thanks for the help
2013-06-20T14:50:49 < jpa-> did you have microsd card on the board anyway?
2013-06-20T14:51:12 < Tectu> yep
2013-06-20T14:51:29 < jpa-> yeah, then eeprom is a good complement to that
2013-06-20T14:53:07 < Laurenceb> ST has 4M cycle eeprom
2013-06-20T14:54:21 < karlp> Tectu: you can get eeproms with an ethernet mac address burnt into them in the first few bytes.
2013-06-20T14:54:39 < karlp> these are handy for having a globally unique serial number, even if you're not using ethernet.
2013-06-20T14:54:42 < Tectu> barthess made some cycles test a few months ago with some atmel eeproms, afaik
2013-06-20T14:54:46 < Laurenceb> or just pick a random number
2013-06-20T14:55:00 < jpa-> karlp: but stm32 has that anyway :)
2013-06-20T14:55:02 < Tectu> karlp, cool, didn't know that.
2013-06-20T14:55:09 < karlp> sure, but when it's the same price as an eeprom without it....
2013-06-20T14:55:10 < Tectu> karlp, they are really world-wide unique?
2013-06-20T14:55:37 < karlp> they're meant to be, and you should complain to the part vendor if you ever see duplicates,
2013-06-20T14:55:56 < Tectu> hahaha
2013-06-20T14:56:05 < Tectu> what are those? 32-bit?
2013-06-20T14:56:22 < jpa-> they are definitely unique among the chip series.. but no-one can guarantee that some chinese manufacturer doesn't pick the same MAC at random
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2013-06-20T14:57:12 < Tectu> but MAC stands for media MediaAccessControl, no?
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2013-06-20T14:57:32 < karlp> Tectu: mac address == common name, EUI-48 = technical name
2013-06-20T14:57:50 < jpa-> MAC stands for mcdonals
2013-06-20T14:58:04 < Tectu> watchout, jpa's trolling. world must be burning
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2013-06-20T15:49:33 < dongs> zyp: wheres dimensions for your 0805 led pattern
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2013-06-20T16:30:01 < zeropointo> what's the best way to set up microsecond delays on a cortex m3?
2013-06-20T16:36:04 < zeropointo> specificly delays of 100us or greater
2013-06-20T16:37:15 < dongs> duno you can uuse cycleccounter or systick
2013-06-20T16:37:20 < dongs> i use cyclecounter.
2013-06-20T16:37:59 < dongs> https://github.com/nzmichaelh/openpilot/blob/master/flight/PiOS/STM32F10x/pios_delay.c
2013-06-20T16:45:08 < zeropointo> is it a good idea to fire an interrupt every 100us?
2013-06-20T16:45:54 < zyp> depends on what you want to do
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2013-06-20T17:17:46 < zeropointo> just deincrement a 32bit integer...
2013-06-20T17:20:27 < hk> You can do plenty of other things in 100us I don't see a problem.
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2013-06-20T17:33:42 < jon1012> 100us is a lot of time
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2013-06-20T17:51:57 < gxti> you can fly to the moon in 100us
2013-06-20T17:57:50 < emeb> ?
2013-06-20T17:58:09 < emeb> don't you have to exceed c for that?
2013-06-20T17:58:39 < dongs> speed of blogs?
2013-06-20T18:00:00  * emeb munches on caffeinated chocolate mints.
2013-06-20T18:00:03 < gxti> emeb: nah, relativity
2013-06-20T18:00:18 < emeb> gxti: perceived time?
2013-06-20T18:00:21 < gxti> sure :P
2013-06-20T18:00:39 < gxti> i was just abusing a quote for personal amusement though.
2013-06-20T18:00:55 < emeb> did it work - were you amused?
2013-06-20T18:01:06 < gxti> sufficiently so, yes
2013-06-20T18:01:17 < emeb> *MISSION ACCOMPLISHED*
2013-06-20T18:02:45 < emeb> gxti: buy yourself a BBB + Audio Cape yet? :)
2013-06-20T18:02:59 < gxti> next time i make a digikey order
2013-06-20T18:03:07 < emeb> cool.
2013-06-20T18:03:35 < gxti> i feel sort of let down that a ready-made solution existed, but not so much so that i want to actually make my own
2013-06-20T18:03:47 < emeb> hah!
2013-06-20T18:04:05 < emeb> I'm sure you'll find some challenges to getting it done just the way you want.
2013-06-20T18:04:14 < emeb> but they're likely to be mostly software.
2013-06-20T18:04:29 < gxti> that's the least fun part
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2013-06-20T18:04:38 < emeb> I'd tend to agree
2013-06-20T18:04:51 < gxti> but in any case, once i get it working maybe later i can make a custom mini-cape
2013-06-20T18:05:01 < emeb> I'd be interested in that.
2013-06-20T18:06:14 < emeb> just turned on my BBB to see if there is audio support built into the Angstrom OS I flashed on it last week...
2013-06-20T18:06:20 < gxti> not sure exactly what it would do, possibly just a faster+better DAC or maybe s/pdif out
2013-06-20T18:06:34 < emeb> yeah. all that.
2013-06-20T18:07:12 < gxti> s/pdif is kinda shitty because it's self-clocked but i doubt i can tell the difference
2013-06-20T18:07:20 < gxti> and the audiphool dac i'm using now has optical in
2013-06-20T18:07:43 < emeb> that's a start
2013-06-20T18:07:44 < gxti> and already does 192khz/24bit
2013-06-20T18:08:58 < emeb> got a buddy who works in broadcasting - thinking about building a BBB-based rackmount device to do AES/EBU muxing / routing and audio insertion for FM & TV transmitters.
2013-06-20T18:09:52 < emeb> would need some of those Cirrus Logic parts plus an FPGA to handle the routing.
2013-06-20T18:10:03 < gxti> i need to figure out if the s/pdif out from my PCs is good enough to rely on (no compatibility issues with games or whatever), then what i would do is build a s/pdif dac + mixer + headphone amp
2013-06-20T18:10:14 < emeb> BBB for web-based control and storage of audio clips for insertion (ID, emergency, etc)
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2013-06-20T18:11:12 < emeb> so s/pdif RX circuit + good quality I2S DAC + whatever audiophool stuff you need for mixer & HP amp.
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2013-06-20T18:20:24 < upgrdman> i would like to take the average of ~100 int16's. For small samples I just add all values into one variable, then divide by the number of samples, but obviously I don't have a data type that cant hold the sum of ~100 16bit ints. whats a good way to tackle this? split it into groups of 10, average those grops, then average those averages?
2013-06-20T18:20:58 < upgrdman> (mean average in case that's not obvious)
2013-06-20T18:21:46 < zyp> huh?
2013-06-20T18:22:08 < zyp> 100 int16's easily fit in a int32
2013-06-20T18:23:13 < upgrdman> ? not if they're near max value
2013-06-20T18:23:15 < zyp> 100 int16s summed will in a worst case require 23 bits to be represented
2013-06-20T18:24:07 < someone_r> Hi... do you know if the I2C STM library have problems when i stream multiple register (Burst Read) from I2C sensors? I am trying to access the data from the MPU9150 and i have 14 consecutive registers with data in... i stream the first 6 (Ax Ay and Az) and they are fine... then i stream 2 register for the temperature (and they are not correct), then i stream the last 6 register (gx gy and gz)
2013-06-20T18:24:07 < someone_r> and gx is NOT correct (but gy and gz are!)... so this does not make too much sense...
2013-06-20T18:24:07 < someone_r> any idea?
2013-06-20T18:24:30 < emeb> gxti: looks like playing audio with "aplay <wavfile>" starts up the audio device and I'm getting bit clock, frame clock and audio data.
2013-06-20T18:24:30 < dongs> what
2013-06-20T18:24:54 < gxti> emeb: at work now but i guess i should figure out how the clocking works
2013-06-20T18:25:07 < gxti> if the dac is the master, something has to tell it what to do
2013-06-20T18:25:32 < upgrdman> zyp: damn. youre right. what was i thinking
2013-06-20T18:26:02 < zyp> upgrdman, if you don't understand it, consider this: the max value you can get is 100 * 2^16, and log2(100 * 2^16) is 22.64, which rounds up to 23
2013-06-20T18:26:03 < emeb> gxti: yeah - the audio cape I believe has the codec as master. There's an I2C interface to configure the clocks that are sent back to the beaglebone.
2013-06-20T18:26:48 < gxti> my main concern is that clock switching could be buggy and/or slow enough to be audible, when moving from one track to the next. so i'll have to nose around and see what it does.
2013-06-20T18:26:50 < zyp> upgrdman, or the faster way is just recognizing that 100 requires 7 bits to represent, and multiplied with 16 bits, you get 7+16 = 23 bits
2013-06-20T18:27:11 < upgrdman> zyp: i was thinking i need one extra bit per int16, forgetting that it grows expontially instead of linearly with n bits :o(
2013-06-20T18:27:19 < upgrdman> doh
2013-06-20T18:27:24 < emeb> gxti: do you expect that the sample rates on your source material will vary widely?
2013-06-20T18:28:16 < gxti> emeb: sure, mostly 44.1khz but with some 96khz and 88.2khz (ugh) and probably 48khz somewhere
2013-06-20T18:28:30 < emeb> gxti: I run MPD on a little Intel Atom server. Just plays a large library of MP3 files at random and everything is SRCed to one rate.
2013-06-20T18:28:54 < gxti> emeb: that's true, the BBB is probably a billion times faster than the geode LX i have it on now. could just upsample...
2013-06-20T18:29:04 < gxti> but if i don't have to, that's good too
2013-06-20T18:29:08 < emeb> ya
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2013-06-20T18:29:30 < emeb> gxti: what do you use for an MPD client?
2013-06-20T18:29:37 < gxti> emeb: cantata
2013-06-20T18:30:05 < emeb> gxti: I should look at that - I've been using gMPC. It kinda bugs me.
2013-06-20T18:30:18 < gxti> mpd is a great idea that's somewhat lacking in implementation
2013-06-20T18:30:42 < emeb> wish it had a better random selector - the one I'm using now tends to repeat a lot and doesn't seem to pull from the whole collection.
2013-06-20T18:31:24 < emeb> MPD is a decent back-end / server. The clients kinda suck tho.
2013-06-20T18:31:49 < gxti> right, but there are also things the clients have to do that really should be in mpd, like replaygain. at least i *think* that's the client doing it...
2013-06-20T18:31:55 < gxti> either way it seems sorta buggy
2013-06-20T18:32:18 < emeb> yep
2013-06-20T18:33:32 < emeb> interesting - when not actively playing audio the I2S bitclock defaults to ~25MHz.
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2013-06-20T19:01:58 < zyp> TI NFC devboard arrived today
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2013-06-20T19:05:29 < emeb> get ready to hack yer NFC payments.
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2013-06-20T20:15:30 < karlp> ncmpcpp! the only mpd client you'll ever need!
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2013-06-20T20:17:05 < BrainDamage> was there a discount on letter count when they picked the name?
2013-06-20T20:17:40 < emeb> ncurses. meh
2013-06-20T20:18:18 < BrainDamage> to me it's not the players the problem but mpd itself
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2013-06-20T20:18:30 < emeb> what problem?
2013-06-20T20:18:32 < BrainDamage> I'd need for it to support upnp or daap
2013-06-20T20:18:51 < BrainDamage> so I could have all my shared media accessible to mpd
2013-06-20T20:18:57 < emeb> I've got a daap server running on that machine too.
2013-06-20T20:19:00 < BrainDamage> but no, they have to roll their own
2013-06-20T20:19:03 < emeb> separate though
2013-06-20T20:19:22 < BrainDamage> unfortunately, the machine that runs the media server is a bit tight on specs
2013-06-20T20:19:38 < BrainDamage> and running extra mpd gives struttering when playing high res video
2013-06-20T20:19:44 < emeb> daap seems to be poorly supported - Apple keeps changing it and maintainers get tired of chasing them.
2013-06-20T20:19:51 < BrainDamage> due to buffers falling short
2013-06-20T20:20:29 < emeb> get a beefier machine?
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2013-06-20T20:20:53 < BrainDamage> thing is, that one works
2013-06-20T20:21:05 < BrainDamage> except for a decent music player locally
2013-06-20T20:21:08 < karlp> emeb: yeah, on the desktop, I had been using ario,
2013-06-20T20:21:09 < zyp> you have a weird definition of works
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2013-06-20T20:21:37 < BrainDamage> why, it works well, except I cannot add mpd
2013-06-20T20:21:39 < karlp> but I used to use ncmpcpp in the same screen I irc in, and was using it with the htppd streaming, not actually for local use.
2013-06-20T20:21:54 < BrainDamage> it does what it does currently without glitches
2013-06-20T20:21:58 < karlp> BrainDamage: whare you using for the upnp/daap server?
2013-06-20T20:21:59 < BrainDamage> I just can't add more crap
2013-06-20T20:22:06 < BrainDamage> mediatomb
2013-06-20T20:22:11 < karlp> I've got too many things with "upnp" suppor tthat don't all see each other.
2013-06-20T20:22:13 < BrainDamage> daap is currently off
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2013-06-20T20:22:19 < karlp> need a night to try them all out
2013-06-20T20:22:48 < emeb> I use tangerine for daap server. Seems to work OK.
2013-06-20T20:22:49 < BrainDamage> oh yes, there's quite a few embrace and extend policies over upnp
2013-06-20T20:23:08 < BrainDamage> my main issue is not the box
2013-06-20T20:23:27 < BrainDamage> it's findin a decent audio place on the pc that doesn't drive me insane
2013-06-20T20:23:46 < BrainDamage> to be fair, I am a bit hesigent
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2013-06-20T20:28:09 < emeb> hmmm... no ario pkg available for Fedora and it won't build from source.
2013-06-20T20:28:24 < emeb> looks like it's designed for an older gtk version.
2013-06-20T20:29:51 < karlp> yeah, I haven't used it in a while.
2013-06-20T20:30:05 < karlp> I'm currently just using rbox locally,
2013-06-20T20:30:19 < karlp> want a way to go back to having one media library and multiple playing devices.
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2013-06-20T21:37:59 < BrainDamage> very NSFW and Laurenceb's grade link, the LHC ( large hadron collider ): http://i.imgur.com/O4lVaJg.png
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2013-06-20T21:40:22 < zyp> no, that's the large hardon collider
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2013-06-20T22:41:58 <+Steffanx> BrainDamage d it is
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2013-06-20T23:24:37 < Tectu> I'm searching for some tactile button which has an SMD 6x4mm footprint
2013-06-20T23:24:43 < Tectu> anyone know anything?
2013-06-20T23:25:25 < zyp> one in particular?
2013-06-20T23:26:08 < Tectu> any one. I can just find 3x4 or larger ones
2013-06-20T23:26:27 < zyp> why exactly that size?
2013-06-20T23:26:53 < Tectu> given PCB
2013-06-20T23:27:25 < zyp> ah, right
2013-06-20T23:28:00 < zyp> two or four pads?
2013-06-20T23:28:08 < Tectu> four
2013-06-20T23:28:22 < Tectu> which are arranged in a  6mm by 4mm grid
2013-06-20T23:28:32 < Tectu> well, maybe it's 3.5 or something
2013-06-20T23:28:53 < Tectu> oh looks like digikey really has an "outline"-filter with real numbers
2013-06-20T23:29:01 < Tectu> http://www.digikey.com/scripts/dksearch/dksus.dll?pv522=26&FV=fff40011%2Cfff8005e%2C1140003&k=tactile+button&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
2013-06-20T23:29:08 < zyp> yep
2013-06-20T23:29:24 < zyp> http://www.digikey.com/product-detail/en/KMR241NG%20ULC%20LFS/CKN10285CT-ND/2296966 <- I were thinking of these, but they are probably too small
2013-06-20T23:29:25 < Tectu> uf
2013-06-20T23:29:49 < zyp> switch outline != pcb footprint outline
2013-06-20T23:30:03 < Tectu> yes, that is way too small
2013-06-20T23:30:11 < Tectu> and yes, I just figured that out - now I am screwed up again :)
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2013-06-20T23:33:46 < flop> stm is giving free stm32L1 discovery
2013-06-20T23:34:24 < Tectu> flop, link?
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2013-06-20T23:34:29 < Tectu> zyp, anything else found? :/
2013-06-20T23:34:58 < flop> Tectu: no link, but got a free board in my hands right now
2013-06-20T23:35:18 < Tectu> flop, from where?
2013-06-20T23:35:41 < flop> Tectu: I attended the free seminar over here
2013-06-20T23:36:30 < flop> it works without any power
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2013-06-20T23:38:49 < Tectu> huh?
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2013-06-20T23:48:31 < Tectu> emeb, ping
2013-06-20T23:49:10 < Tectu> emeb, what happens when the BMP is not used? Does it turn high Z (digital input)? The JTAG pins I route to my actual main MCU are used by some SPI interface
2013-06-20T23:49:14 < Tectu> I hope that this is no issue?
2013-06-20T23:50:50 < Thorn> once you switch those pins to alternate function you can't use jtag (most likely also swd) anymore
2013-06-20T23:51:20 < Tectu> but the SPI will work?
2013-06-20T23:51:29 < Tectu> wait - I cannot debug then anymore?
2013-06-20T23:51:47 < Thorn> no you can't unless you switch them back in your code
2013-06-20T23:52:04 < Thorn> (which is exactly where your bug will be)
2013-06-20T23:52:47 < Tectu> meeeeeeh
2013-06-20T23:52:51 < Tectu> that is an issue.
2013-06-20T23:53:34 < Tectu> I have three SPI devices and I thought I split it to three different SPI peripherals so I might got some more parallel performance (I know that SPI2 and 3 are slower than 1)
2013-06-20T23:55:14 < PaulFertser> Tectu: you can connect holding SRST if you routed that out.
2013-06-20T23:55:23 < PaulFertser> Tectu: so you'll be able to at least reflash it
2013-06-20T23:55:40 < Tectu> SRST? You mean NRST?
2013-06-20T23:55:53 < PaulFertser> Tectu: yes
2013-06-20T23:57:13 < Tectu> na, I will just hook the devices up to the same SPI I guess
2013-06-20T23:57:41 < Tectu> it's a touchscreen controller and some FPGA <--> MCU interface
2013-06-20T23:57:48 < Tectu> where the former must be as slow as possible
2013-06-20T23:57:56 < Tectu> and the latter can be quite... variable
2013-06-20T23:59:29 < Tectu> can I directly connect a 3V battery to the VBAT pin or are there any other components needed?
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2013-06-21T01:31:28 < Laurenceb_> so today I met a university MC
2013-06-21T01:37:52 < Laurenceb_> unfortunately it involves introducing the queen.. so id probably vom
2013-06-21T01:38:30 <+Steffanx> Whatever a university mc is
2013-06-21T01:39:15 < Laurenceb_> master of ceremonies
2013-06-21T01:39:28 < Laurenceb_> so unfortunately it doesnt involve rapping either :(
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2013-06-21T01:44:17 < ds2> wouldn't that be MC University?
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2013-06-21T02:30:02 < dongs> sup blogosphere
2013-06-21T02:35:23 < Thorn> dongs: your favorite weendows software http://i.imgur.com/eOqlBnk.png
2013-06-21T02:37:02 -!- kuldeepdhaka [~kuldeepdh@117.254.222.108] has quit [Quit: already morning]
2013-06-21T02:37:20 < dongs> jujst beacuse you have a computer from last century wiht amd graphics doesn't make acrobat shit.
2013-06-21T02:37:39 < Thorn> amd geforce rite
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2013-06-21T02:38:36 < zyp> Thorn, what kind of monitor do you have with that resolution? highdpi or just huge?
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2013-06-21T02:39:26 < dongs> what resolution?
2013-06-21T02:39:30 < Thorn> a normal 1920x1200 one
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2013-06-21T02:39:52 < zyp> sure, but what size?
2013-06-21T02:40:01 < Thorn> 24"
2013-06-21T02:40:24 < dongs> zyp, how are yo useeing resolution from that screenshot
2013-06-21T02:40:53 < zyp> well, everything is fucking huge
2013-06-21T02:41:02 < dongs> what is?
2013-06-21T02:41:07 < dongs> looks normal to me
2013-06-21T02:41:07 < zyp> the fonts
2013-06-21T02:41:23 < dongs> no?
2013-06-21T02:42:34 < zyp> looks to me like it either came from a retina display or a guy with bad eyesight
2013-06-21T02:42:57 < dongs> looks like standard windows desktop to me
2013-06-21T02:43:18 < zyp> wat
2013-06-21T02:43:28 < dongs> < Thorn> dongs: your favorite weendows software http://i.imgur.com/eOqlBnk.png
2013-06-21T02:43:31 < dongs> are we talkin about this
2013-06-21T02:43:42 < zyp> oh, fuck
2013-06-21T02:43:48 < zyp> it was scaled in the browser
2013-06-21T02:43:56 < gxti> hurr
2013-06-21T02:45:38 < ds2> fun
2013-06-21T02:52:20 < ossifrage> Trying to decide if it is worth the pain to do ethernet on a STM32...
2013-06-21T02:52:35 < dongs> apparently it works?
2013-06-21T02:55:38 < ossifrage> In a previous life I swore never to do IP stuff on a processor without a MMU (or a reasonable amount of memory)
2013-06-21T02:55:41 < Thorn> USB could be called a pain but ethernet shouldn't be much more difficult than with those idiot chips like enc28j60 (unless they contain a full tcp/ip stack too)
2013-06-21T02:55:58 < dongs> ya people do ethernet on fagduino so..
2013-06-21T02:56:28 < gxti> they don't "do ethernet", they do some chip someone already made for them
2013-06-21T02:56:28 < ossifrage> at least USB has a nicely contained memory footprint
2013-06-21T02:57:10 < ossifrage> by do ethernet I mean a tcp stack and at least a minimal web server
2013-06-21T02:57:40 < dongs> dont free/chibi/whateverthefuck rtos all have samples that do that already
2013-06-21T02:58:17 < gxti> yes, i had no trouble getting chibios+lwip working minimally. getting it to work well has been more challenging.
2013-06-21T02:58:29 < gxti> i would recommend getting at least 64K of RAM.
2013-06-21T02:58:36 < ossifrage> my current problem is that to at least have the phy footprint on my board I need to give up some other functional units
2013-06-21T02:58:43 < ossifrage> (on a 144 pin LQFP)
2013-06-21T02:59:27 < zyp> that's why there are a 208pin package
2013-06-21T03:00:25 < qyx_> basic web server :S
2013-06-21T03:00:26 < Thorn> those are bigger than some modern cell phones
2013-06-21T03:00:57 < qyx_> i still don't have http basic auth working ok
2013-06-21T03:02:04 < ossifrage> I have a really nice web embedded web server with https and various auth stuff plus some streaming functionality, but I suspect it is too linux centric to port to a STM32
2013-06-21T03:02:07 < ds2> there are stm32 with ethernet in there
2013-06-21T03:02:26 < ds2> ossifrage: uCLinux :)
2013-06-21T03:02:33 < qyx_> really nice web server probably wont fit in stm32
2013-06-21T03:02:34 < ossifrage> and I porting it would make me cry
2013-06-21T03:03:19 < zyp> Thorn, well, that's what you get when you insist on going QFP
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2013-06-21T03:03:36 < ossifrage> so I think I end up back at my vow not to fuck with IP without a MMU and a real OS
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2013-06-21T03:04:12 < ossifrage> I don't think i'd want to toaster oven reflow a bga
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2013-06-21T03:05:20 < ds2> it isn't that bad
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2013-06-21T03:05:38 < zyp> I didn't have any problems with the bga board I did
2013-06-21T03:05:55 < ossifrage> I (the royal I) have done it a few times with a cheapo hotair rework station
2013-06-21T03:06:11 < zyp> which pitch btw?
2013-06-21T03:06:27 < ossifrage> I think that was a 256 ball package (not sure, <0.5mm I think)
2013-06-21T03:06:31 < ds2> 0.35mm? ;)
2013-06-21T03:06:41 < zyp> the one I did was 1mm pitch, way easier than working with 0.5mm pitch QFN
2013-06-21T03:07:03 < ossifrage> it was a while ago, I still have a few trays of parts lying around here someplace
2013-06-21T03:07:13 < ds2> 0.5mm QFN's are easy
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2013-06-21T03:07:28 < ossifrage> QFNs with the right amount of paste are painless
2013-06-21T03:07:44 < ossifrage> QFNs with too much paste == short city
2013-06-21T03:07:46 < ds2> QFN's with wire solder is painless
2013-06-21T03:07:59 < qyx_> hm, didnt have any problem with qfns even without paste
2013-06-21T03:08:14 < ds2> qyx_: wire solder or something else all together?
2013-06-21T03:08:16 < ossifrage> did they have pads that wrap around the edge?
2013-06-21T03:08:20 < zyp> I didn't say QFN were hard, I just said I found BGA even easier
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2013-06-21T03:08:36 < dongs> QFN is fucking annoying
2013-06-21T03:08:39 < dongs> because of hte exposed pad
2013-06-21T03:08:43 < dongs> cant route shit under it
2013-06-21T03:08:49 < qyx_> ds2: wire solder applied to pcb, lof of soldering gel and hotair station
2013-06-21T03:08:51 < ds2> routing...heheh
2013-06-21T03:08:55 < zyp> dongs, that too
2013-06-21T03:09:02 < ds2> qyx_: I do exactly the same thing
2013-06-21T03:09:11 < dongs> i mean given a choice of something BGA or QFN i'll do BGA anyday
2013-06-21T03:09:30 < gxti> i do that plus tin the component pads. i tried one without doing that and it didn't go as well, maybe just unlucky.
2013-06-21T03:09:35 < ossifrage> I still have a board here with a short between SCL/SDA and ground that I think is hiding under a qfn :-(
2013-06-21T03:09:48 < qyx_> gxti: yep, sometimes i have to tin also component pads
2013-06-21T03:09:53 < ds2> ossifrage: try a very thin flux and hot air it?
2013-06-21T03:10:05 < zyp> dongs, well, you have fairly limited room for routing anything under the bga too
2013-06-21T03:10:21 < ossifrage> yeah, I don't have a hotair station at home
2013-06-21T03:10:46 < qyx_> last time i saw very nice wlcsp6 in 1x1.5mm package
2013-06-21T03:10:47 < ossifrage> how much routing room depends on how small you can go with vias
2013-06-21T03:10:54 < qyx_> must be fun to do anything with it
2013-06-21T03:11:17 < dongs> zyp: but at least going to 4 layers or higher wiht BGA will be justified
2013-06-21T03:11:20 < ds2> qyx_: is that the TMP sensor from TI?
2013-06-21T03:11:21 < dongs> with QFN its just rage
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2013-06-21T03:11:31 < gxti> qyx_: those are super obnoxious
2013-06-21T03:11:45 < qyx_> ds2: no, it was some smps switcher
2013-06-21T03:11:48 < zyp> dongs, true
2013-06-21T03:11:50 < dongs> lol 1x1.6
2013-06-21T03:12:02 < dongs> don't sneeze
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2013-06-21T03:12:29 < zyp> it's like a 0603, except with six pads instead of two
2013-06-21T03:12:31 < ds2> still bigger then 0403
2013-06-21T03:12:48 < gxti> the ic itself was quite nice
2013-06-21T03:12:52 < zyp> or like three 0201's side by side
2013-06-21T03:12:53 < gxti> wish it was available in a normal package
2013-06-21T03:13:09 < ossifrage> okay the 216 ball package is 13x13mm with 0.8mm pitch, that isn't too bad
2013-06-21T03:13:19 < dongs> ballz
2013-06-21T03:13:23 < qyx_> ADP2138
2013-06-21T03:13:29 < qyx_> Compact, 800 mA, 3 MHz,
2013-06-21T03:13:29 < qyx_> Step-Down DC-to-DC Converter
2013-06-21T03:13:37 < zyp> 0.8 doesn't sound that much harder than 1mm
2013-06-21T03:13:46 < ossifrage> (err, that is the new STM32F429, not patient enough to wait for that)
2013-06-21T03:14:06 < ds2> I wonder if the wlcsp6 have any packaging material on them or is it just a die
2013-06-21T03:14:10 < dongs> qyx_: haha, with 1uH coil, entire thing could probly fit into like 4x4mm
2013-06-21T03:14:18 < gxti> ds2: it's just a coating on the back
2013-06-21T03:14:20 < gxti> no other packaging
2013-06-21T03:14:23 < ds2> "Compact"? heheheheeheh
2013-06-21T03:14:30 < gxti> there's even a warning about light hitting the side
2013-06-21T03:14:33 < dongs> pretty sure  the whole point of 'CSP' is that its just the die
2013-06-21T03:14:49 < zyp> they are called «flip chip» for a reason
2013-06-21T03:15:07 < zyp> it's just a die flipped over that you solder down
2013-06-21T03:15:08 < ds2> so they just metalize pads on the die and put balls on them?
2013-06-21T03:15:14 < dongs> evalboard layout is pretty big
2013-06-21T03:15:15 < zyp> yep
2013-06-21T03:15:38 < ds2> this is amazing
2013-06-21T03:15:54 < ds2> so basically epoxy blob technology for low volume guys
2013-06-21T03:16:27 < ossifrage> what about the parts with a package that is just a silicon interposer (or whatever they are called in this case)
2013-06-21T03:16:29 < zyp> not really
2013-06-21T03:16:54 < ossifrage> it is a flip chip with on a PCB that is made from silicon (but a much larger feature size)
2013-06-21T03:17:07 < zyp> dies bonded to the board is a different beast, they don't require very good board specs
2013-06-21T03:17:27 < zyp> a 0.4mm 8x8 WLCSP is a bit harder to break out
2013-06-21T03:17:44 < gxti> 6/6 was plenty, i think 8/8 would work too
2013-06-21T03:17:53 < qyx_> actually this smps looks pretty nice
2013-06-21T03:17:57 < qyx_> hm
2013-06-21T03:18:06 < gxti> like i said, it's good just a pain to solder
2013-06-21T03:18:07 < qyx_> also the price isnt that bad
2013-06-21T03:19:17 < ossifrage> On my most recent board I used a TPS63031DSKT boost/buck regulator that seems to work really well (just a bit on the expensive side)
2013-06-21T03:19:49 < zyp> gxti, for 0.4mm? that's 16 mil, you can't fit 8/8 vias at that pitch
2013-06-21T03:20:02 < gxti> you don't need vias zyp, it's only 6 pads
2013-06-21T03:20:25 < zyp> I said 8x8, as in 64 pads
2013-06-21T03:20:41 < ds2> zyp: what kind of specs is the die bonded to PCB designed for?
2013-06-21T03:20:42 < gxti> k
2013-06-21T03:21:08 < zyp> ds2, probably pretty cheap, you can spread out the bond wires to whatever
2013-06-21T03:21:43 < ds2> zyp: Ohhhh you mean they use the same die bonding machine and just do it to the PCB instead o fthe lead frame?
2013-06-21T03:22:19 < zyp> yes, and then it's covered with an epoxy blob
2013-06-21T03:22:46 < ds2> ahh. did not know that. learn something new everyday
2013-06-21T03:22:52 < ossifrage> then it all comes down to yield
2013-06-21T03:23:12 < ossifrage> is the yield high enough to justify the cost savings
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2013-06-21T05:07:50 < upgrdman> when using a timer for pam output, is there any reason NOT to enable all four channels, even if <4 will be used (connected to a GPIO) ?
2013-06-21T05:07:55 < upgrdman> pwm*
2013-06-21T05:08:39 < R2COM> http://altium.com/en/products/altium-designer/purchasing-options
2013-06-21T05:08:41 < R2COM> lol
2013-06-21T05:08:55 < R2COM> what a fucked up feature set
2013-06-21T05:09:03 < R2COM> fucktards
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2013-06-21T05:18:47 < emeb_mac> Support for MCHP touch controls! Can it be true?
2013-06-21T05:19:38 < dongs> lol wtf
2013-06-21T05:19:43 < dongs> got some boards back from pcba
2013-06-21T05:19:53 < dongs> one of  them the 16mhz 3225 xtal is *crushed*
2013-06-21T05:20:06 < dongs> like, has a mark across like someone fucking jammed something heavy over it
2013-06-21T05:20:12 < dongs> unsoldered, and there's a crack on the bottom
2013-06-21T05:21:33 < emeb_mac> they heard you liked your crystals crunchy-style
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2013-06-21T05:22:28 < dongs> reworking these is a bitch
2013-06-21T05:22:34 < dongs> 2oz 4l pcb leadfree
2013-06-21T05:23:04 < emeb_mac> never cared much for Pb free
2013-06-21T05:23:23 < dongs> you do if you wanna actually sell your shit
2013-06-21T05:24:43 < emeb_mac> strangely enough, the stuff I've been working on gets an exemption on ROHS in EU.
2013-06-21T05:24:58 < dongs> rly?
2013-06-21T05:24:59 < dongs> wtf is it
2013-06-21T05:25:25 < emeb_mac> musical instruments and/or hobby equipment.
2013-06-21T05:27:03 < emeb_mac> a lot of "non-consumer" products can apparently squeak by.
2013-06-21T05:27:58 < dongs> wth
2013-06-21T05:28:02 < dongs> i can actually push t he top on these xtals
2013-06-21T05:28:05 < dongs> and it just caves in
2013-06-21T05:28:07 < dongs> what the fuck is this shit
2013-06-21T05:28:14 < emeb_mac> wow.
2013-06-21T05:28:16 < upgrdman> altium wtf... they want 2x $ so you can layout a pcb? fucktards
2013-06-21T05:28:24 < emeb_mac> that's whack
2013-06-21T05:30:09 < emeb_mac> dongs: did you pick the xtals?
2013-06-21T05:30:17 < dongs> http://i.imgur.com/9u5Rmx0.jpg
2013-06-21T05:30:19 < dongs> check this lol
2013-06-21T05:30:24 < dongs> just poked it wiht my scope probel
2013-06-21T05:30:26 < dongs> probe
2013-06-21T05:30:49 < emeb_mac> flimsy shit
2013-06-21T05:30:55 < dongs> nah i just said gimme 16mhz 50ppm
2013-06-21T05:31:10 < emeb_mac> oh - pot luck from their stockroom
2013-06-21T05:31:41 < dongs> another one tries to oscillate but fails
2013-06-21T05:31:45 < dongs> and instead makes real weird patterns on scope
2013-06-21T05:32:41 < emeb_mac> yay - cheap chinese parts!
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2013-06-21T05:33:11 < upgrdman> so this is what a dongs looks like. http://imgur.com/qiNLMZ4
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2013-06-21T05:35:08 < dongs> haha
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2013-06-21T05:37:32 < flop> where's dings?
2013-06-21T05:38:35 < flop> emeb_mac: "cheap chinese", sounds racist
2013-06-21T05:39:52 < emeb_mac> flop: no offense intended - not talking about people here. just parts.
2013-06-21T05:41:13 < flop> emeb_mac: don't worry, I'm just teasing you, but curious how you would reply :)
2013-06-21T05:42:39 < flop> dongs: which scope you would recommend?
2013-06-21T05:43:00 < dongs> pretty sure you cant afford what i'd recommend
2013-06-21T05:43:10 < dongs> im pretty happy wiht dpo4k stuff from tek. im sure tehres better chinese stuff now.
2013-06-21T05:43:11 < flop> just say it
2013-06-21T05:43:17 < R2COM> dso
2013-06-21T05:44:39 < flop> dongs: how much is that dso4k anyway?
2013-06-21T05:44:56 < dongs> good ones start at around 8k
2013-06-21T05:45:03 < dongs> but you didnt say what you want to do
2013-06-21T05:45:04 < flop> lol
2013-06-21T05:45:10 < dongs> maybe $100 chinascope works for your purposes.
2013-06-21T05:45:56 < R2COM> i was joking actually
2013-06-21T05:45:58 < flop> For some time I'm having my eyes on the agilent
2013-06-21T05:46:20 < flop> but I'm debating if they are worth it
2013-06-21T05:46:20 < R2COM> dongs: 100$ chinascope might work for your purposes pretty well too
2013-06-21T05:47:19 < flop> R2COM: dongs needs a dongscope :P
2013-06-21T05:47:26 < R2COM> flop: ...if you not working with higher speed signals, and wider bw (up to 400MHz or so) is not important for you, just get Rigol
2013-06-21T05:47:51 < R2COM> if you need 50Ohm internal option and >200MHz BW, get used Tektroniks, or Agilent
2013-06-21T05:48:37 < flop> R2COM: I'm kind of looking forward to design with ARM processors
2013-06-21T05:48:52 < R2COM> then choose brand new Rigol
2013-06-21T05:48:57 < R2COM> or whatever another brand is
2013-06-21T05:49:06 < R2COM> and you be fine
2013-06-21T05:49:29 < flop> yeah, I'm also having my eyes on the rigols 4000 series
2013-06-21T05:49:39 < emeb_mac> rigol. ugh
2013-06-21T05:49:43 < flop> but they are no more as cheap
2013-06-21T05:50:04 < emeb_mac> saw a teardown on rigol a while back - they're overclocking the ADCs by 2x
2013-06-21T05:50:25 < flop> emeb_mac: is that the rigol 1052?
2013-06-21T05:50:53 < dongs> emeb_mac: isnt that the 'haxed' firmware that does that
2013-06-21T05:51:00 < dongs> anyway, the real low end rigols are fucking garbage
2013-06-21T05:51:21 < flop> dongs: but they make hobbiest happy :)
2013-06-21T05:51:21 < emeb_mac> dongs: no - both the 50 and 100MHz rigols use the same ckt, same clock rates.
2013-06-21T05:51:23 < dongs> worse than aids
2013-06-21T05:51:35 < emeb_mac> the only difference is the front-end filter settings.
2013-06-21T05:51:44 < emeb_mac> the hack just opens up the filter 2x
2013-06-21T05:52:00 < flop> emeb_mac: from which review you saw the teardown?
2013-06-21T05:52:18 < emeb_mac> flop: it was a few years ago. don't have the link handy
2013-06-21T05:52:20 < R2COM> you wanna say they operate outside of spec of adc?
2013-06-21T05:52:28 < emeb_mac> R2COM: yep
2013-06-21T05:52:35 < R2COM> for some reason I doubt that
2013-06-21T05:52:39 < flop> emeb_mac: remember the guy who made it?
2013-06-21T05:52:46 < emeb_mac> Good Analog Devices ADCs, but they run them 2x faster than spec
2013-06-21T05:52:53 < R2COM> usually there is range specified for input clock for most ACs
2013-06-21T05:53:10 < R2COM> some ADCs have internal PLL to manage clock in chip
2013-06-21T05:53:15 < flop> emeb_mac: would they overheat?
2013-06-21T05:53:18 < R2COM> so if they feed 2x bigger clock as you say
2013-06-21T05:53:24 < R2COM> it doesnt mean its done in wrong way
2013-06-21T05:53:36 < emeb_mac> flop: in the teardown they put huge heatsinks on 'em
2013-06-21T05:53:38 < R2COM> did you pull up datasheet of ADC and see its internal block diagram?
2013-06-21T05:53:42 < flop> lol
2013-06-21T05:53:49 < R2COM> did you read datasheet, and see what configuration ADC registers are?
2013-06-21T05:54:10 < R2COM> you can config internal support circuitry for some ADCs and manage the clocks
2013-06-21T05:54:19 < R2COM> which originate from input clock
2013-06-21T05:54:44 < R2COM> if you havent looked into that, but just judge by what you saw in review, its kinda dumb, sorry
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2013-06-21T05:55:25 < emeb_mac> R2COM: I did look up the specs on the parts to confirm what the teardown said.
2013-06-21T05:55:38 < R2COM> adc part number plz
2013-06-21T05:55:42 < emeb_mac> They're simple parts - no plls, no config regs
2013-06-21T05:58:07 < emeb_mac> R2COM: http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad9288/products/product.html
2013-06-21T05:58:32 < emeb_mac> see also: http://www.flickr.com/photos/eevblog/5736298433/in/set-72157626631896579/lightbox/
2013-06-21T05:59:01 < R2COM> what clock was fed in?
2013-06-21T05:59:43 < R2COM> was this 40MSPS variant?
2013-06-21T05:59:59 < emeb_mac> R2COM: is google down today?
2013-06-21T06:00:35 < R2COM> why google?
2013-06-21T06:00:48 < R2COM> datasheet lists 3 variants
2013-06-21T06:01:00 < R2COM> and from that crappy picture its hard to read what exactly part # is
2013-06-21T06:01:15 < R2COM> ok looks -40
2013-06-21T06:01:36 < R2COM> so what clock you say they fed in?
2013-06-21T06:05:55 < emeb_mac> rigol quotes 1GS instantaneous. They're using either 2x or 4x demuxing, so the clock rate is at least 250MHz.
2013-06-21T06:06:31 < R2COM> the Figure 3,4 on datasheet says ENCa/b must be 1/fs period
2013-06-21T06:06:32 < dongs> cool caps bro
2013-06-21T06:06:39 < R2COM> where fs is sampling rate
2013-06-21T06:06:57 < R2COM> according to that shitty picture, if its -40 part, 40MSPS
2013-06-21T06:07:08 < R2COM> so max input clock is 40MHz
2013-06-21T06:07:18 < R2COM> you calim that they fed in 250MHz and it still works dude?
2013-06-21T06:07:35 < R2COM> claim*
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2013-06-21T06:09:30 < emeb_mac> so what's your explanation?
2013-06-21T06:09:51 < R2COM> I dont know I am just assuming something maybe wrong
2013-06-21T06:10:02 < R2COM> 40Mhz and 250MHz is huge difference
2013-06-21T06:10:17 < emeb_mac> they're obviously using 40MHz parts and they spec 1GS in the datasheet. They don't have 25 distinct ADCs in the box.
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2013-06-21T06:11:15 < R2COM> hmmm there are ways to boost sampling... but I kinda highly doubt they using it :)
2013-06-21T06:12:00 < emeb_mac> well, they also quote periodic sampling at up to 25GS rates, so they do that trick too
2013-06-21T06:12:46 < R2COM> well... its not just that trick I was talking about
2013-06-21T06:12:52 < R2COM> anyhow
2013-06-21T06:13:08 < R2COM> I just not sure if a part spected for input clocking of 40Mhz would work from 250MHz...
2013-06-21T06:14:16 < R2COM> its like 6x above spec...
2013-06-21T06:14:55 < R2COM> what about another adc maybe on picture
2013-06-21T06:14:59 < R2COM> with smashed text
2013-06-21T06:15:07 < R2COM> and another one on bottom
2013-06-21T06:15:35 < R2COM> oh eevblog...
2013-06-21T06:15:46 < R2COM> or maybe he fucked up something in his conclusion
2013-06-21T06:15:51 < R2COM> not sure
2013-06-21T06:16:03 < R2COM> its just idea weird to me, that part operated so much outside spec works
2013-06-21T06:16:19 < dongs> eevblog = sellout, no?
2013-06-21T06:19:19 < emeb_mac> eevblog wasn't the source of the original teardown where I saw that conclusion.
2013-06-21T06:19:48 < emeb_mac> been googling - haven't found it. It was a few years ago.
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2013-06-21T06:29:35 < emeb_mac> OK - here's the deal: they have 10x ADCs. 5 per channel. Normally they demux 5x and get 500MSPS. They run the chips at 100MSPS.
2013-06-21T06:30:04 < ds2> 8bit ADCs?
2013-06-21T06:30:11 < emeb_mac> so they're clocking them at the rate of the best-spec parts but buying only the lo-spec parts.
2013-06-21T06:30:20 < emeb_mac> yeah - 8-bit.
2013-06-21T06:30:43 < ds2> don't those things degrade nicely?
2013-06-21T06:30:45 < emeb_mac> consensus is that the penalty for overclocking is degraded noise.
2013-06-21T06:30:54 < ds2> you run them faster and you get fewer good bits
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2013-06-21T06:31:15 < emeb_mac> yeah, but for a scope that's not a big deal
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2013-06-21T06:31:54 < emeb_mac> since they have switchable amps on the front end and you generally get the dynamic range set for a good picture.
2013-06-21T06:33:25 < ds2> for what they are, that is still better then some of the hobbiest centric scopes
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2013-06-21T06:33:50 < emeb_mac> probably
2013-06-21T06:34:43 < emeb_mac> cost difference between the -40 and -100 in large qty is about $7, so that saves $70
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2013-06-21T06:39:47 < R2COM> oh
2013-06-21T06:39:50 < R2COM> 10x adcs...
2013-06-21T06:40:15 < R2COM> so turns out they did *not* operate outside spec that horribly as you stated before right...
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2013-06-21T06:41:04 < R2COM> maybe if you dig in more, you figure out there is no error at all ;)
2013-06-21T06:41:32 < R2COM> 100MHz 40MHz still big difference
2013-06-21T06:42:45 < emeb_mac> you're hi-larious.
2013-06-21T06:42:57 < flop> how could 40MHz part work as 100MHz on production scale?
2013-06-21T06:43:38 < dongs> http://i.imgur.com/xEqbiLs.jpg programming avrdongs
2013-06-21T06:43:43 < R2COM> emeb_mac: hilarios or no... at least now it looks different than what you described before
2013-06-21T06:43:44 < emeb_mac> flop: the chip mfg speed grades - they're designed to run at 100, but some are noisier so they're sold for 80 or 40.
2013-06-21T06:44:05 < emeb_mac> R2COM: I said they overclock them. They overclock them.
2013-06-21T06:44:20 < flop> ah
2013-06-21T06:44:20 < ds2> don't the speed boil down to settling times of the bits?
2013-06-21T06:44:53 < flop> so you get a noisy signal on the scope?
2013-06-21T06:45:07 < emeb_mac> flop: yep - noisier. probably not a big deal tho
2013-06-21T06:45:37 < flop> so basically, they are cheating to sell cheaper?
2013-06-21T06:45:52 < emeb_mac> flop: define cheating. :)
2013-06-21T06:46:00 < ds2> emeb_mac: does this part provide a degradation curve in the datasheet?
2013-06-21T06:46:05 < R2COM> for adc's with input capture circuitry controlled by clock derived from main clock...it might be a problem, since the switches are not designed for higher rates
2013-06-21T06:46:20 < flop> cheating as not being totally honest
2013-06-21T06:46:29 < R2COM> thats why I am not sure why would part work reliably from 2.5x overspec
2013-06-21T06:47:05 < R2COM> I'm talking about sample&hold circuitry
2013-06-21T06:47:07 < emeb_mac> I wouldn't be surprised if Rigol doesn't do some of their own sorting.
2013-06-21T06:47:37 < flop> wouldn't that take time?
2013-06-21T06:47:42 < emeb_mac> or pays ADI to do it for them - get parts that are "good enough" for a dso
2013-06-21T06:48:07 < R2COM> or maybe just ask them to sell -100 parts with -40 marking..
2013-06-21T06:48:23 < emeb_mac> what would be the point?
2013-06-21T06:48:32 < R2COM> confuse you.
2013-06-21T06:48:39 < emeb_mac> buying -40 parts saves 'em $70/scope
2013-06-21T06:48:56 < flop> or maybe ask ADS to put -40 marking to fool little people like us :P
2013-06-21T06:49:12 < dongs> fuck rigol anyway
2013-06-21T06:49:15 < ds2> for some ADCs, the speed rating is based on meeting the full specs
2013-06-21T06:49:16 < dongs> shitty chinese clonecrap
2013-06-21T06:49:32 < ds2> you can run them faster and they provide curves on how it degrades as you increase speed
2013-06-21T06:49:52 < flop> dongs: would I do better with an agilent?
2013-06-21T06:50:05 < emeb_mac> or tek
2013-06-21T06:50:06 < dongs> doesnt rigol make that shit
2013-06-21T06:50:12 < emeb_mac> tek has some good low-end scopes
2013-06-21T06:50:22 < dongs> i thought rigol was making lowend agilent shit
2013-06-21T06:51:03 < ds2> they probally
2013-06-21T06:51:06 < flop> the thing I like with rigol though is the deep memory of 140Mpoints sample
2013-06-21T06:51:16 < ds2> the agilent scope I was using today is total crap
2013-06-21T06:51:29 < flop> ds2: which one?
2013-06-21T06:51:32 < ds2> it gets stuck in modes
2013-06-21T06:51:35 < emeb_mac> never cared for HP/Agilent scopes
2013-06-21T06:51:36 < dongs> newest rigol stole waveinspector shit from tek
2013-06-21T06:51:40 < dongs> so its sorta usable now
2013-06-21T06:51:45 < ds2> flop: donno of hand. it was there at the place I was at
2013-06-21T06:51:51 < ds2> off
2013-06-21T06:51:54 < emeb_mac> HP/Agilent makes good RF stuff. Tek makes good scopes
2013-06-21T06:52:04 < R2COM> lol
2013-06-21T06:52:07 < ds2> the older HP branded scopes are useable
2013-06-21T06:52:28 < flop> dongs: which rigol series are you talking about?
2013-06-21T06:52:30 < emeb_mac> useable yes - like tek better tho. :)
2013-06-21T06:52:40 < ds2> used tek scopes have their own problems
2013-06-21T06:52:45 < ds2> like those damn self encoding probes
2013-06-21T06:52:53 < dongs> flop: ds207x
2013-06-21T06:52:59 < dongs> with widescreen
2013-06-21T06:53:06 < emeb_mac> ds2: yeah - too clever by half
2013-06-21T06:53:17 < ds2> emeb_mac: that pins seems to break off all the time
2013-06-21T06:53:20 < flop> dongie: what about the 4xxx series?
2013-06-21T06:53:24 < emeb_mac> yep
2013-06-21T06:53:36 < dongs> duno
2013-06-21T06:53:50 < dongs> probably stolen tek ideas too
2013-06-21T06:54:14 < flop> you mean the megazoom?
2013-06-21T06:54:17 < ds2> at least rigol is better then the hantek stuff
2013-06-21T06:54:36 < emeb_mac> how about instek?
2013-06-21T06:54:53 < flop> ds2: but rigols aren't cheap for their higher spec scopes
2013-06-21T06:55:38 < flop> in fact, they are expensive for scopes from china
2013-06-21T06:55:53 < ds2> how many people here (besides emeb) actually use the scope for hard core analog stuff?
2013-06-21T06:56:12 < flop> define hardcore
2013-06-21T06:56:13 < dongs> i looked at 36MHz IF output from tuner on mine once
2013-06-21T06:56:35 < dongs> and even FFTd it
2013-06-21T06:57:06 < ds2> look at signal reflections
2013-06-21T06:57:29 < ds2> or slew rates of small signals
2013-06-21T06:57:29 < R2COM> signal reflections will be depending on your matching to scope
2013-06-21T06:57:46 < R2COM> I mostly use almost no cable to connect some test stuff to SCope
2013-06-21T06:57:50 < R2COM> test custom pcb
2013-06-21T06:57:50 < flop> well, I see analog ringings on digital transitions if that counts
2013-06-21T06:57:56 < R2COM> just RF-con and rf-bnc
2013-06-21T06:58:04  * emeb_mac has an ancient tek 2213 dual trace analog.
2013-06-21T06:58:08 < R2COM> because cable also presents capacitance a lot
2013-06-21T06:58:13 < emeb_mac> some day I may get a dso.
2013-06-21T06:58:30 < flop> emeb_mac: you have no dso?
2013-06-21T06:58:39 < emeb_mac> flop: that's right.
2013-06-21T06:58:42 < R2COM> I did use to watch some signals on my home scope up to 250MHz almost with almost no ringing
2013-06-21T06:58:52 < R2COM> 250MHz is my scopes limit
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2013-06-21T06:59:07 < emeb_mac> not bad
2013-06-21T06:59:11 < flop> emeb_mac: which one you would most likely for for?
2013-06-21T06:59:16 < ds2> DSO's have ways of hiding things
2013-06-21T06:59:21 < R2COM> I used some short low loss expencive cables from pasternack
2013-06-21T06:59:34 < emeb_mac> flop: dunno - it's been a while since I researched
2013-06-21T06:59:42 < john_can_work> hi, does anyone know where in the datasheet can I find the GPIO current limits for the stm32f4?
2013-06-21T07:00:01 < flop> emeb_mac: but which brand most likely?
2013-06-21T07:00:15 < john_can_work> ... i am looking in the reference manual, is that the right place?
2013-06-21T07:00:28 < flop> john_can_work: no, device datasheet
2013-06-21T07:00:37 < john_can_work> ok cheers
2013-06-21T07:06:26 < dongs> http://i.imgur.com/GTOh3zv.jpg
2013-06-21T07:08:06 < emeb_mac> nice - iPad displays?
2013-06-21T07:08:51 < flop> your homebrew dual screen monitor?
2013-06-21T07:09:10 < dongs> emeb_mac: y
2013-06-21T07:09:36 < emeb_mac> coo
2013-06-21T07:11:02 < flop> dongs: why not had the panels closer?
2013-06-21T07:11:21 < dongs> ?
2013-06-21T07:11:25 < dongs> there's border
2013-06-21T07:11:27 < dongs> so it doesnt matter
2013-06-21T07:12:09 < flop> you put screw right onto the border?
2013-06-21T07:21:07 < R2COM> i was about to photoshop some porn shit into both screens, then was like meh...
2013-06-21T07:22:12 < dongs> flop: theres a mounting flange
2013-06-21T07:22:14 < dongs> right on the edge
2013-06-21T07:22:17 < dongs> using like M1.5 screw
2013-06-21T07:22:34 < dongs> these are 10" panels.
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2013-06-21T07:29:22 < R2COM> by the way
2013-06-21T07:29:36 < R2COM> I have two monitors now, and another one hanging around in another room currently for no use
2013-06-21T07:29:41 < R2COM> maybe I stick it in too...
2013-06-21T07:29:42 < R2COM> hmmm
2013-06-21T07:29:49 < R2COM> schematics - layout - parameter windows
2013-06-21T07:30:19 < R2COM> will need to makeup place for it
2013-06-21T07:33:22 < dongs> http://imgur.com/a/E8Lw7/embed/ more build pics
2013-06-21T08:00:03 < dongs> attn baird http://i.imgur.com/VSKKbf7.jpg
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2013-06-21T08:15:14 < emeb_mac> but does that RGB cycle?
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2013-06-21T09:21:05 < baird> damn, just spent all my money on this: http://www.thisnext.com/item/5047B4C2/Tiger-Tail-and-Ears-Helmet
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2013-06-21T09:35:52 < Tectu> baird, why? m(
2013-06-21T09:36:43 < dongs> haha
2013-06-21T09:36:48 < dongs> furry shit
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2013-06-21T10:51:57 < R2COM> oh shit how I hate invoices without price for delivery
2013-06-21T10:53:06 < Tectu> yeah, that can be quite annyoing
2013-06-21T10:53:07 < Tectu> had that once
2013-06-21T10:53:11 < Tectu> price was 150$
2013-06-21T10:53:12 < Tectu> was okay
2013-06-21T10:53:17 < Tectu> delivery was 45$
2013-06-21T10:53:18 < Tectu> wtf
2013-06-21T10:53:32 < R2COM> I dont care about price mostly
2013-06-21T10:53:47 < dongs> R2COM deals drugs
2013-06-21T10:53:50 < R2COM> its just to get all money back I need to show full invoice
2013-06-21T10:57:58 < R2COM> mmm ok 30 min on routing some board
2013-06-21T10:57:59 < R2COM> then sleep
2013-06-21T10:58:06 < dongs> http://forum.arduino.cc/index.php?topic=168586.0 haha arduino
2013-06-21T10:58:30 < R2COM> This is very importante!
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2013-06-21T10:59:54 < jon1012> did you guys ever tested freerouter ?
2013-06-21T11:05:03 < R2COM> free router=no router
2013-06-21T11:05:17 < R2COM> cheap router=no router
2013-06-21T11:05:31 < R2COM> expencive router+skill in placement/settings = ok
2013-06-21T11:08:11 -!- neuro_sys [~neuro_sys@unaffiliated/neurosys/x-283974] has quit [Excess Flood]
2013-06-21T11:08:39 < dongs> ^
2013-06-21T11:08:45 < dongs> free/gnu/lunix trash routers  = fucking aids
2013-06-21T11:09:01 -!- neuro_sys [~neuro_sys@unaffiliated/neurosys/x-283974] has joined ##stm32
2013-06-21T11:10:09 < ABLomas> ...and aids ownz the world!
2013-06-21T11:11:34 < R2COM> do you guys know place which serves free food?
2013-06-21T11:11:42 < R2COM> lol
2013-06-21T11:13:03 < dongs> if by "ownz" you mean causes the most DDoS, yeah sure
2013-06-21T11:13:30 < R2COM> I thought wars cause most deaths
2013-06-21T11:21:30 < R2COM> shit this board will be BIG
2013-06-21T11:21:50 < R2COM> maybe its more wise to use some sturdy microcontroller with 5V tolerant pins and high drive capability
2013-06-21T11:21:54 < R2COM> I guessing Silabs
2013-06-21T11:22:05 < R2COM> since I dont need as much processing power as stm32 offers anyhow...
2013-06-21T11:22:07 < R2COM> ahhh
2013-06-21T11:22:31 < R2COM> board is bigger because of additional Buffers/Drivers
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2013-06-21T11:34:54 < dongs> silabs has some M3 with like 200mA/pin drive
2013-06-21T11:35:56 < R2COM> awesome
2013-06-21T11:37:08 < dongs> and all 5V tolerant,, i think it might evne run off 5V
2013-06-21T11:37:16 < dongs> some motor control shit
2013-06-21T11:40:04 < R2COM> darn wish most of those tiny resistor arrays had more power capability
2013-06-21T11:40:45 < R2COM> anyhow its fine for now... just bigger in size
2013-06-21T11:41:03 < R2COM> by the way Silabs has cool configuration tool
2013-06-21T11:41:10 < R2COM> for pins etc
2013-06-21T11:41:15 < R2COM> for all internal circuitry
2013-06-21T11:41:17 < R2COM> schematics based
2013-06-21T11:41:26 < R2COM> they provide tools for their own development
2013-06-21T11:41:30 < R2COM> kinda like Xilinx etc...
2013-06-21T11:46:32 < R2COM> 20 ICs on my board
2013-06-21T11:46:35 < R2COM> 130 resistors
2013-06-21T11:46:45 < R2COM> 80 caps
2013-06-21T11:46:56 < R2COM> 30  connectors
2013-06-21T11:52:16 < R2COM> sleep
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2013-06-21T12:09:46 < jon1012> bwah, that's not the worse, my current board has 256 rgb leds, 25 ics, 64 other ics (open packages), 35 caps, and about 80 resistors...
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2013-06-21T12:19:27 < Tectu> so my FSMC tracks would be 120mm... is that still in the "okay" range, when they are all the same length, shielded by ground planes or might this not work on full speed anymore?
2013-06-21T12:20:04 < Tectu> jon1012, 100 resistors, 174 caps, 51 ICs (some big ones too) and 47 inductors
2013-06-21T12:21:09 < Tectu> http://abload.de/img/chisig_fullmhoo8.jpg
2013-06-21T12:21:36 < dongs> kikecadey
2013-06-21T12:39:15 < jon1012> freerouter (from freerouting.net) seems quite good
2013-06-21T12:39:28 < jon1012> much better than eagle or kicad autorouter
2013-06-21T12:39:32 < jon1012> (but that's not very hard)
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2013-06-21T13:28:48 < Tectu> KiCAD has a build in auto router?
2013-06-21T13:35:08 < dongs> haha
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2013-06-21T14:11:44 < Laurenceb_> auto router is always fail
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2013-06-21T14:14:21 < dongs> so kicad = fail + autorouter = fail = what do we have?
2013-06-21T14:14:25 < dongs> giant fail?
2013-06-21T14:14:48 < zyp> doesn't two negatives become a positive? :p
2013-06-21T14:14:52 < dongs> no
2013-06-21T14:15:03 < Tectu> zyp +1
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2013-06-21T14:29:17 < qyx_> show me the universe where two negatives give anything positive
2013-06-21T14:29:36 < qyx_> except math which is kind of weird
2013-06-21T14:30:05 < qyx_> or.. ok, nevermind
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2013-06-21T14:34:43 < Tectu> does the .dsn actually include the DRC rules?
2013-06-21T14:44:05 < Claude> Tectu, altium/protel ?
2013-06-21T14:44:24 < Claude> or orcad dsn ?
2013-06-21T14:44:38 < Tectu> Claude, that thing that kiCAD exports
2013-06-21T14:44:40 < Tectu> spectra dsn
2013-06-21T14:44:51 < Claude> awww okay :) no clue then
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2013-06-21T15:24:26 < jon1012> Tectu, answer is yes I think
2013-06-21T15:24:45 < Tectu> jon1012, thanks
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2013-06-21T16:20:49 < jon1012> someone tried -Ofast with stm32 code on gcc ?
2013-06-21T16:23:05 < dongs> no, i prefer using a real compiler
2013-06-21T16:24:16 < jon1012> bwah
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2013-06-21T16:53:48 < Laurenceb_> trolololololololololololollololollololollololollololololollollollolololollololollololololololololololololoolololoolol
2013-06-21T16:54:06 <+Steffanx> jon1012, just ignore those two
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2013-06-21T16:54:37 <+Steffanx> dekar played around with gcc a lot, but he's not here atm
2013-06-21T16:56:20 < baird> With my
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2013-06-21T16:58:33 <+Steffanx> Sure, baird
2013-06-21T16:58:51 < baird> With my GCC pokings, I often find the most significant performance tip is to just have all the code in one file.. With the sort of code(sizes) I'm doing on embedded, GCC can more efficiently manage registers if it knows what all the code is doing. When using seperate files, it doesn't check beyond the module.
2013-06-21T16:59:58 < dongs> yeah LTO is hard
2013-06-21T17:01:18 < baird> For the stm6502 simulator, gcc did neat tricks like wire a register to certain frequently-used vars, and then a lot of code reduction happened when it wasn't loading R3 et.al. all the time.
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2013-06-21T17:34:21 < karlp> oh, he left.
2013-06-21T17:34:51 < zyp> keyword: inlining
2013-06-21T17:34:56 < karlp> the lua makefile does that by itself, it creates a single giant source file from all the "real" sources and then hands that to gcc
2013-06-21T17:35:15 < zyp> ew :p
2013-06-21T17:36:04 < zyp> I'll argue that it's uglier than my habit of just defining a bit more than needed in headers
2013-06-21T17:37:01 < karlp> doesn't really matter if someone did all the makefile heavy lifting already, you never see it.
2013-06-21T17:37:31 < zyp> except when it breaks
2013-06-21T17:37:34 < karlp> I like just using whatever separate files feel convenient and logical and totally ignore performance.
2013-06-21T17:37:43 < karlp> "the compiler will figure it out, maybe not today, but eventually"
2013-06-21T17:38:11 < karlp> sure, that sort of manual source munging is hardcore,
2013-06-21T17:38:33 < karlp> but I don't hack on lua internals, so I really don't care, I just mentioned it as a way other people have approached the LTO problem.
2013-06-21T17:38:54 < zyp> I'm more of a «I'll just define it here right in the declaration, then I'll look at moving stuff to a seperate translation unit later»
2013-06-21T17:41:24 <+Steffanx> lol @ last part of sentence :)
2013-06-21T17:50:18 < zyp> later™
2013-06-21T17:52:56 < karlp> the trendy way of spelling never :)
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2013-06-21T18:13:52 < Laurenceb_> http://www.theregister.co.uk/2013/06/21/stratasys_to_buy_makerbot_for_us403m/
2013-06-21T18:13:55 < Laurenceb_> what the fuuuuu
2013-06-21T18:14:05 < Laurenceb_> 403millloonnnnn dollars?!!!!!
2013-06-21T18:15:20 <+Steffanx> million actually, not millon
2013-06-21T18:15:41 < Laurenceb_> putting the loon into million
2013-06-21T18:16:17 < Laurenceb_> I used to troll Bre Pettis regularly
2013-06-21T18:16:35 <+Steffanx> Anyway, i dont see the problem. I still don't like the quality of those 'basic' 3d printers
2013-06-21T18:16:40 <+Steffanx> And the nice one are pretty expensive
2013-06-21T18:16:42 <+Steffanx> *ones
2013-06-21T18:17:09 < Laurenceb_> makerbot is n00bish trash
2013-06-21T18:17:16 < Laurenceb_> made by perman00bs
2013-06-21T18:17:32 <+Steffanx> You're involved uh?
2013-06-21T18:18:07 <+Steffanx> You should join #makerbot and rant about it there, instead of here
2013-06-21T18:18:11 < Laurenceb_> they used to lurk on irc
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2013-06-21T18:59:32 < karlp> only problem with stratasys acquiring them is the potential for even more 3d shit to get locked up in patent crap
2013-06-21T19:00:54 < dongs> wat
2013-06-21T19:01:10 < dongs> meeeeeeelion?
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2013-06-21T19:49:01 <+Steffanx> Hmm, yeah that sucks karlp :(
2013-06-21T19:49:45 < dongs> but makerbot has always sucked so who cares
2013-06-21T19:51:15 <+Steffanx> sucked by dongs
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2013-06-21T19:53:40 < gxti> old
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2013-06-21T19:55:18 < emeb> reprap 4-ever?
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2013-06-21T20:12:46 < dongs> what was that series resistor I needed on 3.3V-tolerant pins to let them more or less deal with 5V?
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2013-06-21T20:12:49 < dongs> 1K enough?
2013-06-21T20:12:57 < dongs> will that affect pwm capture/output and/or uart?
2013-06-21T20:13:53 < dongs> hm better check if i saved the chats about this from like 2 years ago
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2013-06-21T20:32:38 <+Steffanx> inca ...
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2013-06-21T20:43:23 < PaulFertser> dongs: if your 5V source pin doesn't like feeding more than 1.7mA then you might end up "overstressing" it because your typical 5V-intolerant pin will clamp any voltage greater than Vcc to Vcc.
2013-06-21T20:44:34 < dongs> well ya somethinglike that
2013-06-21T20:44:59 < dongs> but ghetto way was inline resistor
2013-06-21T20:45:33 < dongs> it doesn't solve the problem but makes the current Irel
2013-06-21T20:45:40 < dongs> irrelevant enough
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2013-06-21T20:48:15 < PaulFertser> dongs: 1K still allows up to ~1.7mA for ~5-3.3V
2013-06-21T20:49:43 < PaulFertser> But that should work just fine for the majority of cases of course.
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2013-06-21T20:52:01 < dongs> ok
2013-06-21T20:52:41 < dongs> idid put 1k inseries before on uart pins and it worked so..
2013-06-21T20:52:59 < emeb> dongs: the Xilinx appnotes suggest a 10k resistor
2013-06-21T20:53:23 < emeb> to keep from stressing the ESD diodes
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2013-06-21T20:57:18 < dongs> hm
2013-06-21T20:57:39 < dongs> 10k won'taffect like uart or pwm?
2013-06-21T20:59:03 < emeb> you want to use this pin for both in and out?
2013-06-21T21:03:47 < PaulFertser> emeb: really, official appnotes suggesting such a ghetto way instead of at least a voltage divider?
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2013-06-21T21:04:26 < PaulFertser> emeb: hm, ~1mA doesn't sound like stressing much
2013-06-21T21:06:51 < dongs> emeb ya uart or pwm in.out
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2013-06-21T21:33:12 < coon> wow full house. seems i am not the only one who likes stm32 stuff
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2013-06-21T21:34:23 <+Steffanx> Hi :)
2013-06-21T21:34:46 <+Steffanx> Welcome to ##stm32
2013-06-21T21:34:49 <+Steffanx> ^^ Tectu :P
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2013-06-21T21:50:34 < emeb> PaulFertser: It's true - Xilinx's own Peter Alfke (RIP) recommended using 10k resistors to bring 5V signals into 3.3V input pins. He had a very thorough analysis to back it up.
2013-06-21T21:51:05 < emeb> It might be different on other mfgs/processes, but seems like a good rule of thumb.
2013-06-21T21:51:20 < PaulFertser> emeb: nice to know, thank you
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2013-06-21T21:52:03 < emeb> dongs: for outputs, pick off between the pin and resistor. for inputs bring in thru the resistor?
2013-06-21T21:52:39 < zyp> I bet he wants both in a single point
2013-06-21T21:53:44 < emeb> yeah
2013-06-21T21:54:03 < emeb> it's a trade-off if you want a cheap solution.
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2013-06-21T21:54:43 < zyp> the trick is to find the right value between too low to handle 5V in and too high to have any drive strength out
2013-06-21T21:55:41 < emeb> otherwise, get yourself some SN74AVC4T774PWR translators
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2013-06-21T22:00:22 < ds2> PIC had an appnote about connecting to the AC line using a high value resistor
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2013-06-21T22:03:16 < zyp> if you want to save some time you can just hook the PIC directly to the AC line without any resistor
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2013-06-21T22:04:23 < emeb> that'll save a whole lot of time
2013-06-21T22:04:39 < emeb> then buy yourself a real processor. :P
2013-06-21T22:05:36 < zyp> exactly my point ;)
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2013-06-21T22:09:05 < emeb> I have grokked the nub of your gist.
2013-06-21T22:09:51 < zyp> emeb, doing any fun stm32 projects nowadays?
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2013-06-21T22:11:59 < emeb> zyp: not a lot. I've got a couple of audio projects on the back burner right now, but they're low priority.
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2013-06-21T22:12:36 < zyp> what are keeping you busy nowadays then?
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2013-06-21T22:12:51 < emeb> day job & random life stuff.
2013-06-21T22:13:20 < emeb> doing a few minor things with beagleboard black too.
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2013-06-21T22:13:54 < emeb> s/board/bone/
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2013-06-21T22:14:28 < emeb> how about you? what's on the front burner?
2013-06-21T22:15:50 < zyp> not sure, I have a lot of stuff I want to do, but not enough time or motivation
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2013-06-21T22:16:46 < emeb> yep - know that feeling.
2013-06-21T22:17:05 < emeb> could just be summertime. too hot to get very enthused.
2013-06-21T22:17:07 < zyp> was planning on designing HID boards this week, but didn't find time, and I'm not gonna have time during the weekend either
2013-06-21T22:17:21 < emeb> usb hid?
2013-06-21T22:17:27 < zyp> yeah
2013-06-21T22:17:39 < ds2> hid for what kind of stuff?
2013-06-21T22:18:58 < zyp> gamepad class
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2013-06-21T22:26:38 < zyp> also been looking a bit into NFC, I'm considering writing a generic reusable reader stack
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2013-06-21T22:28:16 < emeb> sounds fun.
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2013-06-21T22:35:29 < zyp> I hope so
2013-06-21T22:35:49 < zyp> the myriad of different standards to handle seems like it might be a bit of a hassle
2013-06-21T22:36:29 < emeb> is NFC sufficiently standardized that one PHY can handle most stuff, or is it fragmented like cellphones?
2013-06-21T22:37:07 < ds2> who makes full programmable NFC PHY's?
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2013-06-21T22:43:14 < zyp> oh, with NFC I mean the entire 13.56 MHz stuff, I think the NFC term only covers a subset of that
2013-06-21T22:44:03 < zyp> http://www.ti.com/product/trf7970A <- this chip seems to support everything I'm interested in, so that's what I'm planning on going for
2013-06-21T22:44:40 < zyp> http://www.ti.com/tool/trf7960atb <- got this yesterday, has same features except p2p mode
2013-06-21T22:44:57 < zyp> but I assume they are otherwise compatible, so I'll prototype with that first
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2013-06-21T22:46:25 < ds2> that seems more involve dual port I2C/NFC eeproms from ST
2013-06-21T22:46:43 < zyp> they are not readers
2013-06-21T22:46:51 < zyp> I'm interested in readers
2013-06-21T22:46:55 < ds2> ah
2013-06-21T22:47:00 < ds2> the otehr half
2013-06-21T22:47:08 < zyp> yeah, I looked at them first
2013-06-21T22:47:53 < zyp> the reader chips on the discovery kit for them seems nice
2013-06-21T22:48:22 < zyp> but the chips aren't available on distributors, so it's pretty useless putting time into that when I can't make my own board for it later
2013-06-21T22:49:16 < ds2> how hard is to build a reader from ground up?
2013-06-21T22:49:38 < zyp> well, that remains to see
2013-06-21T22:50:25 < zyp> I got the demoboard I mentioned yesterday, so I need to hook it up to some SPI master and start coding
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2013-06-21T23:10:00 <+Steffanx> whats the plan nfc zyp? just to play with nfc or ..
2013-06-21T23:11:08 < zyp> mostly
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2013-06-21T23:26:22 < trepidaciousMBR> Seems a bit pointless to get RS to stock the discovery kit for a chip that they don't stock
2013-06-21T23:27:59 < trepidaciousMBR> zyp: Have you seen this? http://dangerousprototypes.com/forum/viewtopic.php?f=19&t=3187
2013-06-21T23:28:30 < Thorn> Dave finds a stellaris in an Agilent 34461A http://www.youtube.com/watch?v=2vkkaygR4HE
2013-06-21T23:28:52 < zyp> trepidaciousMBR, no
2013-06-21T23:29:48 < zyp> oh, TitanMKD
2013-06-21T23:32:03 < zyp> pretty poor layout though, and entirely uninteresting for my purpose
2013-06-21T23:32:16 < zyp> but I might have a talk with the guy next time he drops by
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2013-06-21T23:36:19 < trepidaciousMBR> I was wondering whether he'd made any code available
2013-06-21T23:37:33 < zyp> I'm not very interested in other code, you learn much more from writing it ground up ;)
2013-06-21T23:38:33 < trepidaciousMBR> ah yup :)
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2013-06-22T02:36:47 < dongs> dixler
2013-06-22T02:40:16 <+Steffanx> You Have nothing better to do?
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2013-06-22T02:43:58 < dongs> nope
2013-06-22T02:43:59 < dongs> just woke up
2013-06-22T02:45:40 < Gargantuasauce> i finally understand dongs-time!
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2013-06-22T03:20:00 < dongs> oh?
2013-06-22T03:23:19 < BrainDamage> if you lookup his ip, he's in 2nd best korea
2013-06-22T03:23:34 < Gargantuasauce> being an hour off of it instead of 11
2013-06-22T03:23:57 < Gargantuasauce> oh same timezone actually
2013-06-22T03:24:01 < dongs> lol
2013-06-22T03:25:39 < dongs> Gargantuasauce: where are you in best korea anyway. seoul or someshit?
2013-06-22T03:25:55 < Gargantuasauce> dankook university in jukjeon
2013-06-22T03:28:50 < dongs> aw too far
2013-06-22T03:30:11 < BrainDamage> did you already challenge the status quo of the resident starcraft champion?
2013-06-22T03:31:04 < Gargantuasauce> no but i seem to outdrink everyone
2013-06-22T03:31:36 < dongs> actually like 2 hours by ghettobus
2013-06-22T03:39:02 < ds2> drinking what?
2013-06-22T03:39:51 < Gargantuasauce> soju and dongdongju and boring beer, so far
2013-06-22T03:42:13 < BrainDamage> is dongdongju like dongs' officially endoresed beverage?
2013-06-22T03:43:07 < Gargantuasauce> i would hope so
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2013-06-22T06:19:39 < R2COM> hi embedded trolls
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2013-06-22T06:22:04 < dongs> embedding the trolls
2013-06-22T06:22:59 < R2COM> new stuff
2013-06-22T06:23:56 < R2COM> weird
2013-06-22T06:24:17 < R2COM> these image paste websites fucked up
2013-06-22T06:24:22 < dongs> imgur.com
2013-06-22T06:24:30 < R2COM> it does not upload anything
2013-06-22T06:26:15 < dongs> drop a file into it.
2013-06-22T06:27:33 < R2COM> once you press "start upload" it does not upload even after drop
2013-06-22T06:29:52 < dongs> duno works for me
2013-06-22T06:31:05 < R2COM> maybe browser..anyhow, done on other one
2013-06-22T06:31:17 < R2COM> http://snag.gy/yD3W1.jpg
2013-06-22T06:32:17 < dongs> http://i.imgur.com/Rg7tZMQ.jpg
2013-06-22T06:32:20 < dongs> rehosted on less aids site
2013-06-22T06:32:24 < dongs> nice dong
2013-06-22T06:32:27 < R2COM> theres no my stuff in payload on this one.
2013-06-22T06:32:32 < R2COM> mine will be on similar one
2013-06-22T06:32:35 < R2COM> after...3-4 months
2013-06-22T06:32:56 < R2COM> on this similar carrier
2013-06-22T06:33:23 < R2COM> http://snag.gy/WuEvd.jpg
2013-06-22T06:34:26 < R2COM> soo...its time very soon to do super shaky shaky test on my pcbs ;)
2013-06-22T06:37:20 < R2COM> "disappear" :P http://i.snag.gy/v8WoY.jpg
2013-06-22T06:39:25 < R2COM> I was tired, 0 sleep today. but now for some reason not tired.
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2013-06-22T07:03:21 < baird> R2COM: any idea of the altitude achieved?
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2013-06-22T07:05:16 < R2COM> >70 miles
2013-06-22T07:07:08 < baird> ...
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2013-06-22T10:08:47 < Thorn> is ENTRY() in ld scripts significant in any way for cortex-m?
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2013-06-22T11:17:05 < coon> hm, what is the flash memory on the stm32vldiiscovery for?
2013-06-22T11:17:48 < coon> is there a way to use it on the stm or can i only use it as usb stick?
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2013-06-22T11:39:39 <+Steffanx> is
2013-06-22T11:41:25 <+Steffanx> Is there more flash on that board other than the few K in the STM32?
2013-06-22T11:42:49 < Thorn> what usb stick
2013-06-22T11:43:08 < Thorn> is that an example that comes with it or what?
2013-06-22T11:44:18 <+Steffanx> the vl discovery has no usb fo
2013-06-22T11:45:14 <+Steffanx> r the target
2013-06-22T11:45:21 <+Steffanx> oops
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2013-06-22T11:50:53 < dongs> haha
2013-06-22T11:51:00 < dongs> i think hes talkin about the fake 32meg fhasl drive
2013-06-22T11:51:03 < dongs> that stlink shows up as
2013-06-22T11:51:07 < dongs> which is readonly etc.
2013-06-22T11:59:56 <+Steffanx> oh heh
2013-06-22T12:03:38 < coon> when i plug into the usb programming port i get a flash drive with 32MB
2013-06-22T12:03:48 < coon> with 3 files on it
2013-06-22T12:04:11 < coon> but that are just some text files
2013-06-22T12:04:28 < dongs> right
2013-06-22T12:04:31 < dongs> its fake
2013-06-22T12:04:37 < dongs> just raw filesystem and the rest dummy
2013-06-22T12:05:08 < dongs> it just serves first few kbytes for real to show partition+fat+whatever and then the rest is just zeros
2013-06-22T12:09:45 < coon> hm ok
2013-06-22T12:10:06 < coon> i'm using a 4gb sd card on SPI port anyway :)
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2013-06-22T14:25:13 < dongs> what the fuck would cause a nfet to leak through even thogu gate is at 0 and 10k pd to gnd?
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2013-06-22T14:38:25 < Thorn> static damage
2013-06-22T14:44:35 < dongs> and how does that happen
2013-06-22T14:45:05 < dongs> btw its leaking like 20uA or so
2013-06-22T14:45:07 < dongs> not alot
2013-06-22T14:45:15 < dongs> but its for led so its visible
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2013-06-22T15:12:16 < dongs> is lower rds, the more leakage?
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2013-06-22T15:34:57 < BrainDamage> kinda
2013-06-22T15:35:05 < BrainDamage> lower rds means more surface area
2013-06-22T15:35:15 < BrainDamage> more surface area = more leak
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2013-06-22T15:37:50 < BrainDamage> ( I'm not 100% saying it correct because lower RDSon means higher W/L while leaks are prop to W*L, but there's a limit on L length )
2013-06-22T15:38:24 < dongs> W, L means what here?
2013-06-22T15:41:41 < BrainDamage> width and length of active area in the device
2013-06-22T15:42:34 < BrainDamage> the leak current, is much like a diode's reverse leak curent, the mechanism is the same, just geometry different
2013-06-22T15:51:11 < dongs> oh
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2013-06-22T21:22:34 < upgrdman> stm gyro: ctrl
2013-06-22T21:22:36 < upgrdman> oops
2013-06-22T21:23:41 < upgrdman> stm gyro: ctrl_reg1 has bits for output data rate (like 95Hz, etc.) and bandwidth. theres a chart that lists bandwidth bits and resulting "cut-off" but no unit. would that be in Hz, and is it an upper or lower limit?
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2013-06-22T21:49:53 < Thorn> how do I switch 12V @8A without heatsinks? (small package, >10KHz so no relays)
2013-06-22T21:50:14 < coon> hm, is there already a midi parser for the stm32?
2013-06-22T21:50:56 < coon> i found a nice c-code for parsing midis but it loads the whole midi into ram, which is pretty bad if you only have 8KB of RAM :)
2013-06-22T21:52:41 < BrainDamage> Thorn: get a mos with less than 10mOhm RDSon
2013-06-22T21:53:04 < PaulFertser> coon: you should be able to alter it easily, ARM is a Von Neumann architecture, so it doesn't matter much where you read the data from, sram or flash.
2013-06-22T21:53:07 < BrainDamage> with 10mOhm you get about 0.64W, which should be enough to be dissipated by pcb + thermal vias
2013-06-22T21:53:41 < Thorn> IR hexfet or something else?
2013-06-22T21:54:12 < coon> PaulFertser: hm, but i have to do some kind of streaming. i'm doing SD card reading using another library over SPI
2013-06-22T21:54:22 < BrainDamage> sure, you might even get away with a logic level mos
2013-06-22T21:54:31 < BrainDamage> so you won't even need a gate driver
2013-06-22T21:54:45 < BrainDamage> at 10kHz it should be totally possible
2013-06-22T21:54:54 < PaulFertser> coon: i see, well, that's different then. I thought you're going to embed the midi in your binary.
2013-06-22T21:54:55 < Thorn> okay looking. logic level is 3.3V though
2013-06-22T21:55:01 < coon> is there a way to check so current RAM consumption of the microcontroller?
2013-06-22T21:55:43 < BrainDamage> make sure to check the RDSon when you use 3.3Vgs
2013-06-22T21:55:46 < PaulFertser> coon: yes, arm-none-eabi-size and you can also make linker emit memory map file.
2013-06-22T21:56:03 < BrainDamage> because the min RDSon is only achieved at a certain Vgs, specified in the datasheet
2013-06-22T21:56:07 < coon> nah i mean memory allocaed by malloc
2013-06-22T21:56:12 < coon> not static memory
2013-06-22T21:56:28 < BrainDamage> generally you want to avoid dynamic allocation on micros
2013-06-22T21:56:36 < coon> oh
2013-06-22T21:56:39 < BrainDamage> you can easily get out of hand and get an OOM
2013-06-22T21:56:43 < coon> i see, hard to handle
2013-06-22T21:56:52 < BrainDamage> not hard to handle
2013-06-22T21:57:04 < BrainDamage> just easy to get OOM
2013-06-22T21:57:18 < coon> yes since you won't get a compiler warning
2013-06-22T21:58:12 < PaulFertser> Linker
2013-06-22T21:59:13 < PaulFertser> Also, fragmentation issues
2013-06-22T21:59:46 < PaulFertser> So if you still want to dig malloc, read the newlib docs about their particular allocator implementation.
2013-06-22T22:00:16 < BrainDamage> if you really need dyn allocation and can't work around it, make sure to overspec ram container
2013-06-22T22:00:34 < Thorn> goot RTOSes offer fixed pools
2013-06-22T22:00:49 < Thorn> true dynamic allocation on a mcu = fail imo
2013-06-22T22:00:52 < BrainDamage> yeah, memory pool is pretty ok
2013-06-22T22:00:54 < PaulFertser> As does lwIP
2013-06-22T22:01:38 < BrainDamage> Thorn: is your load inductive btw?
2013-06-22T22:01:48 < Thorn> nope, LEDs
2013-06-22T22:02:13 < BrainDamage> goody, so you won't even get much extra dissipation during switching
2013-06-22T22:02:57 < BrainDamage> so Rdson*(I^2) will be a good approx of average power dissipated by the mos
2013-06-22T22:03:24 < BrainDamage> without having to account to fractional periods, switching dissipation, etc
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2013-06-22T22:04:32 < BrainDamage> ofc if you pwm, your average power will go down proportional to PWM fraction, but you should spec it to resist 99% duty cycle all the time
2013-06-22T22:04:36 < coon> BrainDamage: hm i don't realy need it. The library is just written for "normal" computers. I guess I can refactor it easily
2013-06-22T22:05:03 < Thorn> the load could be continuously on
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2013-06-22T22:10:31 < Thorn> LED strips must be horribly inefficient with all those ressitors
2013-06-22T22:10:51 < Thorn> also voltage drop at the end. wouldn't happen with current drive
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2013-06-22T22:45:12 < Thorn> http://ec.irf.com/v6/en/US/adirect/ir
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2013-06-22T22:51:08 < coon> my little project using an stm32vldiscovery :)  http://www.youtube.com/watch?v=dxOKmIyRbx8
2013-06-22T22:53:19 < PaulFertser> coon: is that your video/
2013-06-22T22:53:50 < coon> yes
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2013-06-22T22:54:00 < PaulFertser> coon: awesome!
2013-06-22T22:54:00 < gnomad> you're maine coon is cute, btw
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2013-06-22T22:54:18 < coon> ah no, thats not my profile
2013-06-22T22:55:07 < coon> a friend of mine recorded this since my mobile phones camera sucks but it is my prject
2013-06-22T22:55:11 < coon> *project
2013-06-22T22:55:44 < Tonelock> sorry, I just came in mid-flow, what is your project coon?
2013-06-22T22:55:46 < Thorn> the only music that sounds good when performed by stepper motors is the imperial march.
2013-06-22T22:55:47 < coon> http://www.youtube.com/watch?v=_Ic5bct12HA
2013-06-22T22:56:00 < coon> thats another video recorded by me but sound quality sucks there
2013-06-22T22:56:37 < coon> i also like haddaway on floppies
2013-06-22T22:56:59 < coon> Tonelock: musical floppy drives on stm32
2013-06-22T23:08:23 < coon> bob marley is also nice
2013-06-22T23:09:07 < Thorn> http://www.irf.com/product-info/datasheets/data/irf6201pbf.pdf
2013-06-22T23:10:24 < Tonelock> ok, interesting coon- is the data stored on the floppy, read by stm32 and then sent to a DAC ?
2013-06-22T23:12:32 < Tonelock> coon-just listening to haddaway- sounds very good indeed
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2013-06-22T23:13:02 < coon> no, the midi file is on a laptop. i read it with a python script and send the tone pitch data to the stm32 via RS232
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2013-06-22T23:13:24 < coon> the stm32 is only controlling the stepper motors and leds of the floppy drives yet
2013-06-22T23:14:14 < coon> i also got it already working on a raspberry pi but the pi sucks on decoding the midi file using python, since this is a realtime problem
2013-06-22T23:14:29 < Tonelock> coon- ah, so the floppies are being sequenced to the music?
2013-06-22T23:15:26 < coon> every floppy can play any tone from 0 to about 400hz
2013-06-22T23:15:47 < coon> so every midi channel is one floppy
2013-06-22T23:15:58 < coon> *one midi channel is one floppy
2013-06-22T23:16:48 < Tonelock> how does the floppy play a tone??
2013-06-22T23:17:05 < Tonelock> the data isn't stored on the floppy
2013-06-22T23:17:13 < Tonelock> the floppy doesn't have a speaker
2013-06-22T23:17:28 < coon> i connected the floppy drives to the stm32
2013-06-22T23:17:49 < coon> http://floppyorgel.tumblr.com/
2013-06-22T23:17:50 < Thorn> stepper motors can make sounds
2013-06-22T23:18:17 < coon> right. if you pulse the stepper motor fast enough you will get a tone
2013-06-22T23:18:22 < Thorn> or rather do make sounds whether you want it or not lol
2013-06-22T23:18:28 < coon> if you pulse it 50 times a second you will get 50hz
2013-06-22T23:18:36 < Tonelock> coon- is the sound from the floppy drives achieved by PWM'ing through them?
2013-06-22T23:18:46 < coon> yes
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2013-06-22T23:19:00 < Tonelock> ah, it all makes sense now:)
2013-06-22T23:19:11 < coon> if i say to the stm "play a 50hz tone" it will pulse the pin 50 times a second
2013-06-22T23:19:23 < Tonelock> yeah, I get that
2013-06-22T23:20:02 < Tonelock> It was just at the start you didn't say how the sound was being generated and I just couldn't figure it out
2013-06-22T23:20:11 < Tonelock> coon- it's a cool project
2013-06-22T23:20:16 < coon> thanks
2013-06-22T23:20:46 < Tonelock> so, does the STM decode midi packets then?
2013-06-22T23:20:48 < coon> i didn't invent this but i'm trying to get the best sound out of it
2013-06-22T23:20:53 < coon> nah not yet
2013-06-22T23:21:11 < Thorn> lots of similar videos on youtube (I just wish for someone to do it using some industrial plant lol)
2013-06-22T23:21:14 < Tonelock> ah ok, I udnerstand
2013-06-22T23:21:23 < coon> at the moment it just get "play 50hz on channel 1"
2013-06-22T23:21:27 < Tonelock> *understand
2013-06-22T23:21:55 < coon> but i am working on a midi library which reads and decodes a midi from a sd card directly
2013-06-22T23:22:19 < Thorn> you could also add a "real" midi interface
2013-06-22T23:22:32 < coon> so i could make a nice menu on a raspberry pi and let the stm32 play the midis
2013-06-22T23:23:01 < coon> Thorn: yeah, on a laptop it is possible to connect a midi keyboard and play on floppies with it
2013-06-22T23:24:02 < coon> i think i will also implement that on the pi later. but i didn't get midi stuff running on linux yet
2013-06-22T23:24:45 < Thorn> if the keyboard has a midi interface (not soure if new ones still do) you could connect it directly to your stm32 board
2013-06-22T23:25:15 < coon> hm yes if i find an old one. modern keyboards does all use usb
2013-06-22T23:25:44 < Thorn> well you can implement a usb host with f4 or a f105/107 lol.
2013-06-22T23:25:57 < coon> i also have a f4 :)
2013-06-22T23:29:29 < Thorn> anyone tried soldering DirectFET packages with hot air?
2013-06-22T23:34:37 < upgrdman> neat looking package. never seen it in real life. why use it? less parasitic is?
2013-06-22T23:34:43 < upgrdman> parasitics*
2013-06-22T23:35:21 < Thorn> thermal resistance, easy to put heatsinks on as far as I learned during last 20 minutes
2013-06-22T23:36:24 < Thorn> like http://www.abvolt.com/projects_and_solutions/img/biamp.jpg
2013-06-22T23:37:24 < Thorn> http://www.nexthardware.com/repository/recensioni/717/immagini/img_SapphireRadeonHD7970Toxic6GBFetMos_3854862475910224948.jpg
2013-06-22T23:37:57 < Thorn> ^ with a big heatsink removed
2013-06-22T23:39:06 < upgrdman> cool
2013-06-22T23:45:27 < Thorn> so chances are you can see those if you rip heatsinks from your motherboard / video card lol
2013-06-22T23:59:46 < PaulFertser> Do you guys use JTAG for boundary scan? What tools are you using and how? Do you write SVF files by hand?
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2013-06-23T02:30:05 < gxti> why does this not surprise me: http://www.eevblog.com/forum/reviews/iteadstudio-fpc-mistake/
2013-06-23T02:31:55 <+Steffanx> not the first time to do that
2013-06-23T02:32:12 <+Steffanx> *they do that
2013-06-23T02:32:57 <+Steffanx> ( or perhaps that was seeed, but it's all chinatown stuff )
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2013-06-23T03:51:35 < dongs> lol itead/shittead/wahtever
2013-06-23T03:51:38 < dongs> its all same garbage
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2013-06-23T04:02:15 < dongs> sup
2013-06-23T04:02:17 < dongs> whats chatting
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2013-06-23T04:21:25 < zyp> fpc without rigid backing for components?
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2013-06-23T05:20:40 < R2COM> http://i.imgur.com/cru3saZ.png
2013-06-23T05:20:50 < R2COM> at least I post something what has stm32 on it ;)
2013-06-23T05:25:29 < dongs> r2com loves huge ass connectors
2013-06-23T05:25:58 < R2COM> those are standard 0.1" headers for ribbons
2013-06-23T05:26:05 < R2COM> its all ribbons which will be connected there
2013-06-23T05:26:41 < dongs> i know
2013-06-23T05:27:10 < R2COM> of course there are...ffc or whatever that shit called, tiny thin cables
2013-06-23T05:27:18 < R2COM> and there are appropriate connectors for them
2013-06-23T05:27:26 < R2COM> but those cables are so easy to break...so no way.
2013-06-23T05:30:06 < R2COM> oh and well...board could be better if chip was Silabs ;)
2013-06-23T05:30:21 < R2COM> %s/better/smaller
2013-06-23T05:30:29 < R2COM> because of those buffers...
2013-06-23T05:30:48 < dongs> i see u bufferin u hatin
2013-06-23T05:31:20 < R2COM> yes I buffer everything and everyone
2013-06-23T05:31:24 < upgrdman> my recent project has an stm32f0 in it, but it's got some bugs to work out: https://www.youtube.com/watch?v=xz6ktFL0ybk
2013-06-23T05:32:25 < R2COM> lol
2013-06-23T05:32:47 < dongs> are those servos or something
2013-06-23T05:32:52 < R2COM> yes
2013-06-23T05:33:04 < R2COM> continuous servos I assume
2013-06-23T05:33:06 < dongs> shoiulda used brushless motor w/sine drive
2013-06-23T05:33:16 < upgrdman> yes
2013-06-23T05:33:23 < dongs> probly less torque tho
2013-06-23T05:34:31 < upgrdman> i need to use large wheels, but more importantly: make gyro gain exponential instead of linear, and figure out some way to correct for angle drift since my gyro is cheap. i could probably use the accelerometer to determine the gravity vector
2013-06-23T05:34:50 < R2COM> upgrdman: found a bigger wheel for you dude, catch it http://cache1.asset-cache.net/gc/153030794-man-poses-inside-of-a-wheel-of-a-belaz-rock-gettyimages.jpg?v=1&c=IWSAsset&k=2&d=GkZZ8bf5zL1ZiijUmxa7QU%2BO0dCC4IYSZTUugSnFiU4WF3WvAsgRjQHV5bArEAh8zRYPFxopZqMwp4BOIK3QuA%3D%3D
2013-06-23T05:35:13 < dongs> 500 Server Error
2013-06-23T05:35:16 < upgrdman> oh goodie. i'll have to regear to drive that fekkr
2013-06-23T05:35:41 < R2COM> dongs: your internet sucks
2013-06-23T05:35:45 < dongs> wrong
2013-06-23T05:35:48 < dongs> your urls are too big
2013-06-23T05:37:15 < upgrdman> url worked fine for me
2013-06-23T05:37:30 < upgrdman> dongs need to undongs his connection
2013-06-23T05:38:08 < R2COM> dongs: http://i.snag.gy/SJs9E.jpg
2013-06-23T05:39:34 < dongs> nice wheel
2013-06-23T05:42:28 < dongs> also: pink connectors
2013-06-23T05:45:00 < R2COM> its default color for some reason, I can change that
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2013-06-23T06:18:15 < R2COM> I see that those Murata caps are in generally better in terms of frequency response rather than Kemets
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2013-06-23T06:26:49 < dongs> my chinese murata reels have been pretty good to me
2013-06-23T06:27:11 < dongs> I just recently got some 0.1uF 50V so I dont have to keep 2 types of 0.1uF in stock for bypass crap
2013-06-23T06:27:55 < gxti> R2COM: example?
2013-06-23T06:37:20 < R2COM> what example dude?
2013-06-23T06:38:28 < gxti> of similar murata and kemet caps with different frequency response
2013-06-23T06:42:40 < R2COM> ok 1 sec
2013-06-23T06:44:45 < R2COM> Kemet, part number shown on plot http://imagebin.org/262240
2013-06-23T06:44:55 < R2COM> Murata, part number shown on plot: http://imagebin.org/262241
2013-06-23T06:45:09 < R2COM> example was for 10nf c0g capacitor. with 0603 poackage
2013-06-23T06:45:27 < R2COM> Murata's cap holds its value up to almost 24MHz more than similar Kemet part.
2013-06-23T06:45:30 < R2COM> happy now?
2013-06-23T06:53:56 < gxti> i suppose so
2013-06-23T06:54:43 < R2COM> in general with 8 out of 10 randomly picked cap pairs it was similar case.
2013-06-23T06:55:43 < gxti> the kemet does seem to have a lower esr, but it peaks sooner
2013-06-23T06:56:28 < R2COM> theres ESR mostly is same for all caps I worked with from both of those brands
2013-06-23T06:56:32 < R2COM> one higher than another
2013-06-23T06:56:44 < R2COM> but frequency difference was obvious
2013-06-23T07:32:01 < R2COM> hmmm
2013-06-23T07:32:12 < R2COM> I should have used different connector for power rather standard header
2013-06-23T07:32:22 < R2COM> because there are bunch of standard headers on board too
2013-06-23T07:32:37 < R2COM> although everything has text with Jumper or Power indication...
2013-06-23T07:32:51 < R2COM> what if someone plugs in power into some Jumper header and feeds input voltage :P
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2013-06-23T10:13:01 < R2COM> http://i.snag.gy/ydZAZ.jpg
2013-06-23T10:13:16 < dongs> exdciting routing times ahead
2013-06-23T10:13:31 < R2COM> not really
2013-06-23T10:21:44 < baird> Route me with your routing stick. Route me. Route me.
2013-06-23T10:27:06 < R2COM> 2.43" x 6.9" size
2013-06-23T10:27:28 < PaulFertser> Guys, can you share your boundary scan stories? What tools are you using for that and how?
2013-06-23T10:27:29 < R2COM> stm32f407 with USART1/2/3, SPI3 broken out
2013-06-23T10:27:35 < R2COM> + digital IOs
2013-06-23T10:27:39 < R2COM> +TIM1 breakout
2013-06-23T10:27:50 < R2COM> three sensors with i2c
2013-06-23T10:28:06 < R2COM> XC2c32a cpld for additional 16 channels multiplexing for IO
2013-06-23T10:28:25 < R2COM> and all ios buffered
2013-06-23T10:28:33 < R2COM> BOM: 170$
2013-06-23T10:28:44 < R2COM> 40$ just for one sensor
2013-06-23T10:29:24 < akaWolf> $120 for three? )
2013-06-23T10:29:45 < R2COM> 120$ for all other parts
2013-06-23T10:29:51 < R2COM> 130...
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2013-06-23T10:31:31 < dongs> what trash sensor is $40
2013-06-23T10:31:43 < PaulFertser> trash sensor to sense trash lol
2013-06-23T10:32:13 < dongs> ya
2013-06-23T10:33:16 < R2COM> honeywell stuff
2013-06-23T10:33:18 < R2COM> its not trash
2013-06-23T10:35:10 < ABLomas> ....our new trashcan sensor....
2013-06-23T10:35:16 < ABLomas> or wait, trash-CAN ?
2013-06-23T10:35:25 < dongs> haha
2013-06-23T10:38:45 < R2COM> after few projects completed, I'll play with sensor from Measurement specialties
2013-06-23T10:38:52 < R2COM> accelerometer
2013-06-23T10:39:44 < dongs> ^ he wants the +-6000g one
2013-06-23T10:39:47 < dongs> to pu on a rocket
2013-06-23T10:40:03 < R2COM> no...not that much..
2013-06-23T10:40:14 < dongs> Industries: Aerospace and Military, Engine and Vehicle, Medical, General Industry
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2013-06-23T11:03:09 < dongs> zyp: another stencil opening mid-next week
2013-06-23T11:04:40  * PaulFertser is feeling dumb repeating the same question but really, folks, have anyone ever used JTAG Boundary Scan for anything? ;)
2013-06-23T11:07:00 < R2COM> for xilinx?
2013-06-23T11:07:13 < R2COM> using all the time ;)
2013-06-23T11:10:37 < PaulFertser> R2COM: to do boundary scan or to program it?
2013-06-23T11:10:54 < PaulFertser> I know ISE calls the initial JTAG chain initialisation boundary scan
2013-06-23T11:11:12 < PaulFertser> But then you just assign mcs's and bit files to the components and it "flashes" them.
2013-06-23T11:11:41 < R2COM> yea
2013-06-23T11:15:51 < PaulFertser> And I'm talking about toggling pins and reading the state in some curious ways to test board for shorts/opens and other defects.
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2013-06-23T12:54:37 < Thorn> I have a buck converter which operates in DCM because the load is too light. how do I put it into CCM?
2013-06-23T13:01:25 < dongs> god damn RS is utterly useless.
2013-06-23T13:01:34 < R2COM> rs=
2013-06-23T13:01:41 < dongs> rs components.
2013-06-23T13:01:45 < dongs> useless trash
2013-06-23T13:01:56 < R2COM> pcb software?
2013-06-23T13:02:21 < dongs> no.
2013-06-23T13:02:26 < dongs> useless components distributor.
2013-06-23T13:04:46 < dongs> whoaaa
2013-06-23T13:04:49 < dongs> chip1stop takes apypal
2013-06-23T13:04:53 < dongs> i think i just found my new distributor
2013-06-23T13:04:58 < dongs> er paypal
2013-06-23T13:08:48 < R2COM> why is that paypal thing?
2013-06-23T13:08:56 < R2COM> why would it be preferrable?
2013-06-23T13:09:16 < R2COM> I mean if they can charge cc, then why paypal?
2013-06-23T13:09:17 < dongs> because i dont have to use real money on this stuff.
2013-06-23T13:09:47 < R2COM> you mean you dont want to "flash" your cc?
2013-06-23T13:10:11 < dongs> hm where the fuck is 3.3V syncsep
2013-06-23T13:12:23 < dongs> http://www.ti.com/product/lmh1980 ah this
2013-06-23T13:15:53 < PaulFertser> btw, talking about cpld's and such. If you connect all your components including stm32's in a single jtag chain, you can program them all fully automatically, mass production-style, with "opensores trash application" OpenOCD.
2013-06-23T13:17:38 < Thorn> assuming you can
2013-06-23T13:17:56 < Thorn> IIRC I had problems programming a fresh blank lpc1768 with openocd
2013-06-23T13:18:46 < PaulFertser> Thorn: it's not stm32 though, stms work fine.
2013-06-23T13:19:11 < PaulFertser> Thorn: did you file a bug report or something like that?
2013-06-23T13:19:22 < Thorn> not very comforting when you have LPCs in your device
2013-06-23T13:20:47 < PaulFertser> Thorn: if you still have one of the boards handy, you can probably try to communicate with OpenOCD devs to fix the issue.
2013-06-23T13:23:07 < PaulFertser> Thorn: I personally can provide you with explanations of the parts of code in question.
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2013-06-23T13:24:51 < Thorn> I tried adding lpc17xx support to BMP. no luck yet but hopefully I can make it work
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2013-06-23T13:25:44 < PaulFertser> Debugging a host application is easier than debugging BMP itself, especially if you do not have other BMP to debug it ;)
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2013-06-23T13:26:27 < Thorn> I do, I built a couple of clones
2013-06-23T13:28:53 < PaulFertser> Thorn: i'd still appreciate you at least testing the latest OpenOCD, it should have proper lpc1768 support out of the box, the config is there so someone tested it before.
2013-06-23T13:29:57 < Thorn> I can test with lpc1766 if I make a 20->10 pin cable
2013-06-23T13:30:51 < PaulFertser> Thorn: that would be nice too. I hope it can the same flash helper.
2013-06-23T13:31:27 < PaulFertser> I see reports of successfully using OpenOCD for lpc1768 on Google, so it at least used to work properly.
2013-06-23T13:44:35 < dongs> fucking ridiculous that LMH1980 is hte only 3.3V syncsep
2013-06-23T13:45:03 < dongs> all other trash needs 5V
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2013-06-23T14:11:12 < Thorn> lpc11c2x builtin CAN phy is able to withstand +-58V on L/H lines. not bad
2013-06-23T14:12:19 < Thorn> for sn65hvd230 it's only -4...+16V
2013-06-23T14:13:01 < Thorn> so you can kill it by connecting a 24V supply
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2013-06-23T14:26:25 < qyx_> you can probably combine some ptc fuses and tvs/zener diodes to make overvoltage protection
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2013-06-23T15:40:27 < Thorn> http://www.onsemi.com/pub_link/Collateral/HBD854-D.PDF <-- TVS handbook
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2013-06-23T17:05:29 < Tectu> I saw that already two days ago... is this some kind of new "free" release?
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2013-06-23T17:20:32 < gnomad> Those "free" books are marketing for engineers.
2013-06-23T17:21:18 < gnomad> most semiconductor mfgrs have something similar for the parts they specialize in.
2013-06-23T17:25:03 < Thorn> Jim Williams appnotes must be real good marketing for Linear op amps too
2013-06-23T17:26:03 < dongs> where are chats
2013-06-23T17:26:17 < dongs> oh i see there's some
2013-06-23T17:27:22 < Tectu> take a look at page 108
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2013-06-23T17:27:44 < dongs> there are more than 108 pages in that pdf?
2013-06-23T17:27:55 < Tectu> yes
2013-06-23T17:45:25 < dongs> if i got a reg with pwrgood output but another reg in same package has a bypass cap tehre, can I just mount the cap anyway
2013-06-23T17:45:35 < dongs> and pwrgood is just  gonna be going throug hthe cap, so doesnt matter, right?
2013-06-23T17:47:15 < gxti> could be
2013-06-23T17:47:23 < dongs> eh never midn tehres a version without PG at all but same pinout
2013-06-23T17:47:26 < gxti> the bypass cap is usually optional so you could just leave it disconnected
2013-06-23T17:47:30 < dongs> right
2013-06-23T17:48:03 < dongs> http://www.digikey.com/product-detail/en/TLV70233DBVR/296-32415-1-ND/3505572
2013-06-23T17:48:04 < dongs> hm
2013-06-23T17:48:06 < dongs> no d atasheet? wtf
2013-06-23T17:48:54 < dongs> cool also same 'standard' pinout
2013-06-23T17:50:26 < dongs> http://www.pericom.com/assets/Datasheets/PT7M8206.pdf another
2013-06-23T17:51:16 < dongs> http://www.st.com/web/en/resource/technical/document/datasheet/CD00047465.pdf
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2013-06-23T17:51:22 < dongs> looks like all teh cool guys have same SOT23-5 pinout
2013-06-23T17:52:49 < dongs> http://www.microsemi.com/document-portal/doc_download/9234-lx8213-datasheets aha, FAIL
2013-06-23T17:52:54 < dongs> wrong pinout.
2013-06-23T17:53:35 < dongs> http://www.onsemi.com/pub_link/Collateral/NCP4625-D.PDF another winner
2013-06-23T17:56:08 < dongs> http://www.digikey.com/product-detail/en/SPX3819M5-L-3-3%2FTR/1016-1873-1-ND/3586590 wow, 500mA
2013-06-23T17:56:13 < dongs> and up to 16Vin
2013-06-23T17:57:42 < qyx_> Thorn: what, 127 pages
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2013-06-23T18:02:10 < dongs> http://bcas.tv/paste/results/gSlmgQ44.html
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2013-06-23T18:28:34 < Thorn> nice list. a lost of small buck regulators would be nice too lol
2013-06-23T18:29:31 < Thorn> *list
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2013-06-23T19:12:54 < Thorn> SPX3819 datasheet is funny. "we don't really know which output cap you should use"
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2013-06-23T20:56:01 < Posterdati> hi
2013-06-23T20:56:14 < Posterdati> is it possible to use mmc cards with stm32f107
2013-06-23T20:56:16 < Posterdati> ?
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2013-06-23T20:56:41 <+Steffanx> Should work Posterdati
2013-06-23T20:56:53 < Posterdati> sdio?
2013-06-23T20:57:07 <+Steffanx> does your stm32f107 have that?
2013-06-23T20:57:17 < Thorn> it doesn't
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2013-06-23T20:57:28 < Thorn> f103 has sdio
2013-06-23T20:57:51 <+Steffanx> doesnt it also depend of the size of the package?
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2013-06-23T20:58:23 < Posterdati> I've got an olimex board for stm32f107vct6 and it has got an mmc port
2013-06-23T20:58:31 < Posterdati> but
2013-06-23T20:58:45 < Thorn> "This section applies to high-density and XL-density performance line devices only."
2013-06-23T20:58:50 < Posterdati> in stm32f10x_rcc cl devices haven't got sdio
2013-06-23T20:58:54 < Thorn> (section 22, SDIO)
2013-06-23T20:59:04 < Posterdati> Thorn: that's why I'm asking
2013-06-23T20:59:21 < Thorn> I probably have the same board, the card is connected to SPI iirc
2013-06-23T20:59:21 <+Steffanx> the datasheet does not list sdio for that one
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2013-06-23T21:00:25 < Thorn> that's why my first f103 boards had transflash sockets
2013-06-23T21:00:26 <+Steffanx> BUT
2013-06-23T21:01:06 <+Steffanx> Yeah, section 22 also says it doesnt not apply to the 107
2013-06-23T21:03:13 < Thorn> package determines if 8-bit mode is available iirc
2013-06-23T21:03:49 < Thorn> i.e. data[7...4] pins
2013-06-23T21:06:45 < jpa-> Posterdati: it probably uses SPI
2013-06-23T21:06:59 < jpa-> and SPI is fine for MMC, just a bit slower
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2013-06-23T21:18:41 < Posterdati> jpa-: tx
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2013-06-23T22:13:19 < qyx_> gxti: how big is your lwip bootloader for f107?
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2013-06-23T22:15:32 < gxti> qyx_: about 24k
2013-06-23T22:17:05 < qyx_> not bad
2013-06-23T22:17:20 < qyx_> do you have tcp enabled in lwip?
2013-06-23T22:17:55 < gxti> qyx_: no, it's pretty stripped down and optimized for size
2013-06-23T22:19:05 < gxti> i will probably move to sd card in the future and get it even smaller (maybe without a rtos entirely), could still do upgrades over the net but only from the running app which would write it out to SD
2013-06-23T22:21:12 < qyx_> i have nonvolatile 128K sram on my board, i was thinking of using it for temporal flash image storage
2013-06-23T22:21:40 < qyx_> and then (optionally decompress) and flash it on next reboot
2013-06-23T22:21:54 < gxti> my main requirement was that it was 'unbrickable', even if a valid but busted app got loaded it is still recoverable
2013-06-23T22:22:31 < qyx_> yep, this is not the case of my solution
2013-06-23T22:22:46 < qyx_> but still there would be serial upload available
2013-06-23T22:23:26 < qyx_> another thing came to my mind
2013-06-23T22:24:02 < qyx_> if there is plenty of flash available, it could be remapped to allow me to store multiple firmware images in it
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2013-06-23T22:24:51 < qyx_> eg. if i have a part with 1MB flash and fw is <512K, you can flash new fw to second half and if it doesn't boot you just revert back to first half
2013-06-23T22:28:45 < jpa-> still needs a way to detect if a firmware is fully functional
2013-06-23T22:30:17 < qyx_> maybe some watchgod initialized in bootloader
2013-06-23T22:30:19 < qyx_> *watchdog
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2013-06-23T22:30:45 < jpa-> maybe.. though that causes a bit of annoyance with power down modes
2013-06-23T22:33:37 < zyp> jpa-, a work acquaintance asked me about that once
2013-06-23T22:33:54 < zyp> «you can't stop the watchdog? what are you supposed to do when going to sleep then?»
2013-06-23T22:34:43 < jpa-> https://svn.kapsi.fi/jpa/sphere2/src_rx/main.c   this horrible hack :)
2013-06-23T22:35:50 < zyp> ah, yeah, that looks like what I suggested
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2013-06-23T22:38:40 < jpa-> zyp: fun thing that i needed that __sync_synchronize() there for it to work.. not sure why
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2013-06-24T02:16:27 < dongs> sup dongs
2013-06-24T02:16:37 < dongs> just got spam from fpga japco
2013-06-24T02:16:50 < dongs> http://www.tokudenkairo.co.jp/art7/ why would this be nearly $900
2013-06-24T02:22:31 <+Steffanx> because Japanese, fpga, USB3.0, DDR3
2013-06-24T02:22:43 < dongs> http://www.tokudenkairo.co.jp/art7/images/artix7_brd.jpg pcb looks coming from same source as mine
2013-06-24T02:22:50 < dongs> gonna email them and tell them my shit is cheaper ;d
2013-06-24T02:22:56 <+Steffanx> oh, and arduino style
2013-06-24T02:23:57 <+Steffanx> lol @ 3d render
2013-06-24T02:24:15 <+Steffanx> UV eraseable fpga?
2013-06-24T02:27:17 < dongs> haha
2013-06-24T02:27:31 < dongs> well if youre lolling at 3d render
2013-06-24T02:27:36 < dongs> that USB socket is mighty slim
2013-06-24T02:27:45 < dongs> im pretty sure thats a USB-A or wahtever the square one
2013-06-24T02:27:52 < dongs> or hm wait no,, its USB3
2013-06-24T02:28:07 < dongs> usb device sockets on that are same, rectangular usb
2013-06-24T02:28:41 < dongs> http://www.tokudenkairo.co.jp/raxino/ here you go Steffanx
2013-06-24T02:28:53 < dongs> arduino with a *worthless* processor for $100.
2013-06-24T02:30:13 <+Steffanx> :D
2013-06-24T02:31:27 <+Steffanx> its not even shield compatible
2013-06-24T02:32:04 < dongs> it is acutally
2013-06-24T02:32:23 < dongs> well, couple pages down it has a pic, i didnt bother reading if its actually compatible
2013-06-24T02:32:58 < dongs> http://nahitafu.cocolog-nifty.com/photos/uncategorized/2013/06/21/artix7boardimp.jpg
2013-06-24T02:33:02 < dongs> assembled version
2013-06-24T02:33:15 <+Steffanx> oh it is :)
2013-06-24T02:33:54 < dongs> whoa. that xliinxchip is like $180-$270
2013-06-24T02:35:02 <+Steffanx> i wonder if there is really a market for that board
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2013-06-24T02:35:18 < dongs> not enough useful I/O
2013-06-24T02:52:14 < emeb> meh
2013-06-24T02:52:33 < emeb> why do people always want to put lame-ass processors inside the FPGA.
2013-06-24T02:54:16 < zyp> emeb, do you happen to have an opinion on this? http://opencores.org/project,amber
2013-06-24T02:57:17 < emeb> ARM plc typically doesn't put up with that for long
2013-06-24T02:57:41 < emeb> Interesting idea, but I'd bet that they catch a C&D pretty quick.
2013-06-24T02:57:59 < zyp> it's a rather old project
2013-06-24T02:58:18 < zyp> and apparently v2 ISA is so old that it's ok
2013-06-24T02:58:24 < emeb> I'm not a big fan of putting soft processors in FPGAs - FPGA fabric is much more expensive than hard silicon.
2013-06-24T02:59:08 < emeb> It's fine for one-off, prototype or low volume experimental stuff.
2013-06-24T02:59:31 < emeb> but if you're doing volumes the using an FPGA for implementing your processor is pounding money down a rat hole.
2013-06-24T02:59:52 < zyp> yeah
2013-06-24T03:00:00 < zyp> but lets ignore the cost aspect
2013-06-24T03:00:38 < zyp> got any other opinions?
2013-06-24T03:00:47 < emeb> Well, if you're going to do a soft processor it would be nice to use a standard one with free toolchains.
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2013-06-24T03:01:07 < emeb> The problem with Xilinx Microblaze or Altera Nios is that they charge for the SDKs.
2013-06-24T03:01:27 < emeb> That said, the SDKs are pretty well thought out.
2013-06-24T03:01:43 < emeb> they do the full implementation for you from a specfile + code
2013-06-24T03:02:09 < emeb> whereas with FOSS solutions you'll likely spend a lot of time stitching the processor + peripherals together.
2013-06-24T03:03:32 < emeb> The other downside to using ARM arch vs Microblaze / Nios is that the latter are designed with FPGA implementation in mind.
2013-06-24T03:03:53 < dongs> zyp: status of stencil
2013-06-24T03:03:57 < dongs> have opening mid-this week
2013-06-24T03:04:03 < dongs> can delay +- couple days if needed
2013-06-24T03:04:07 < zyp> dongs, I read that earlier
2013-06-24T03:04:33 < emeb> zyp: you still use plastic stencils?
2013-06-24T03:04:46 < dongs> fuck plastic.
2013-06-24T03:04:59 < emeb> yeah - I realize it's not ideal
2013-06-24T03:05:32 < emeb> buddy of mine got one of those craft-oriented 2D paper cutter things. He's run a few stencils from it. Seems happy with the results.
2013-06-24T03:05:59 < zyp> emeb, I did for my last board, since I couldn't get metal stencil from dongs in time
2013-06-24T03:06:02 < dongs> https://youtube.com/watch?v=ubXcE4uK_QU
2013-06-24T03:06:14 < zyp> but it weren't a very complex board either
2013-06-24T03:06:17 < dongs> RXN62 is fuckin terrible
2013-06-24T03:06:19 < dongs> look how slow
2013-06-24T03:06:41 < emeb> This: http://pmonta.com/blog/2012/12/25/smt-stencil-cutting/
2013-06-24T03:06:54 < dongs> is that teh dumb vinyl cutter guy
2013-06-24T03:06:59 < dongs> lol @ lunix comands to stencil
2013-06-24T03:07:04 < zyp> dongs, don't worry too much about me, I'm being too lazy/busy to even start on the board lately
2013-06-24T03:07:10 < dongs> zyp: haha ok
2013-06-24T03:07:14 < zyp> I'll tell you when I actually have the design ready
2013-06-24T03:07:16 < dongs> i'm sure there's gonna be more stuff later
2013-06-24T03:07:17 < dongs> ok
2013-06-24T03:07:47 < dongs> https://youtube.com/watch?v=OYyyWOE_qKI oh nice compare
2013-06-24T03:08:01 < emeb> RX - that renesas stuff?
2013-06-24T03:08:29 < dongs> ya
2013-06-24T03:08:38 < emeb> meh. fringe junk. :)
2013-06-24T03:08:54 < dongs> im pretty sure he's trolling about M0 being as slow as tarduino
2013-06-24T03:09:00 < dongs> then again.. M0.. not  even any useful instructions
2013-06-24T03:09:12 < dongs> he should show a $15 f4disco doing same shit
2013-06-24T03:09:17 < emeb> right
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2013-06-24T03:09:36 < dongs> haha
2013-06-24T03:09:44 < dongs> i google f4discovery mandelbrot
2013-06-24T03:09:48 < dongs> and like 2nd image i see is http://i.imgur.com/30gpR.jpg
2013-06-24T03:09:52 < dongs> im like hmm that looks familiar
2013-06-24T03:10:24 < zyp> mask color on bottom board looks familiar :p
2013-06-24T03:10:51  * emeb doesn't get it.
2013-06-24T03:10:55 < dongs> its mine
2013-06-24T03:11:00 < emeb> orly?
2013-06-24T03:11:02 < dongs> yearly
2013-06-24T03:11:16 < emeb> when did you do that?
2013-06-24T03:11:21 < BrainDamage> I see a distinctive lack of racial slurs on that pic
2013-06-24T03:11:25 < dongs> https://youtube.com/watch?v=4gwAFDoSIsU featured here
2013-06-24T03:11:30 < dongs> though not the mandel
2013-06-24T03:11:38 < dongs> but same lcd + interface
2013-06-24T03:11:49 < emeb> someone buy it from you?
2013-06-24T03:12:02 < dongs> no, i think i took the pic but I dont remember doing it.. or posting it
2013-06-24T03:12:22 < emeb> getting old and forgetful. :)
2013-06-24T03:13:11 < emeb> that cube is turning slow :) You can make it go a lot faster. :)
2013-06-24T03:13:24 < dongs> yeah it was like +0.05" or so for turn.
2013-06-24T03:13:26 < qyx_> what are the viewing angles of these cheap lcds?
2013-06-24T03:13:30 < qyx_> are they somwehat usable?
2013-06-24T03:13:41 < emeb> they're full TFT - angles are pretty good.
2013-06-24T03:14:19 < qyx_> i mean if they dont change colors much when viewed from sides
2013-06-24T03:14:33 < qyx_> i have one but never had a time to try it
2013-06-24T03:15:09 < emeb> I do recall some fairly strong color shifts on the adafruit 1.8" one I've been using.
2013-06-24T03:20:45 < qyx_> hm
2013-06-24T03:21:13 < dongs> aidsfruit,
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2013-06-24T03:21:40 < dongs> time for some happyhardcore and pcba
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2013-06-24T04:01:42 < dongs> bloggin
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2013-06-24T04:33:08 < dongs> i wonder if Thunderbi in his username means hes using mozilla irc client
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2013-06-24T05:02:23 < john_can_work> dongs wonders correctly
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2013-06-24T05:46:27 < Thorn> dongs: some trolling material http://imageshack.us/a/img13/5297/1yje.jpg
2013-06-24T05:47:01 < dongs> hahah
2013-06-24T05:47:04 < dongs> retweeting
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2013-06-24T07:46:52 < dongs> hm ST's HDMI>DP chip is 0.8mm bga
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2013-06-24T07:55:01 < Tectu> o.O
2013-06-24T07:55:05 < Tectu> how many pins does it have
2013-06-24T07:55:14 < Tectu> or is 0.8mm not the outline but the ball grid?
2013-06-24T07:55:32 < dongs> 81
2013-06-24T07:55:45 < Tectu> and 0.8mm by 0.8mm outline?
2013-06-24T07:56:58 < dongs> faggot, when people say 0.8mm bga thats the pin pitch
2013-06-24T07:57:01 < Thorn> what are you designing? ChikanCam HD?
2013-06-24T07:57:07 < dongs> yes.
2013-06-24T07:57:19 < dongs> 8x8mm
2013-06-24T08:01:05 < dongs> another F1 tray ordered.
2013-06-24T08:07:29 < R2COM> http://i.snag.gy/xVbLr.jpg
2013-06-24T08:07:34 < R2COM> http://i.snag.gy/DqfZG.jpg
2013-06-24T08:07:39 < R2COM> http://i.snag.gy/IM9Sa.jpg
2013-06-24T08:08:03 < Tectu> fancy board, what's that special pink connector?
2013-06-24T08:08:06 < Tectu> (in the middle)
2013-06-24T08:08:23 < R2COM> not sure why its pink actually tried changing color in options, but it doesnt go away
2013-06-24T08:08:34 < R2COM> those are just regular 0.1" headers for ribbon cables
2013-06-24T08:08:41 < R2COM> nothing fancy
2013-06-24T08:08:49 < Tectu> why does it have that thing in the middle?
2013-06-24T08:08:58 < R2COM> fancy were on another high speed board I showed before..
2013-06-24T08:09:01 < Tectu> also, what CAD software is that? Altium?
2013-06-24T08:09:07 < Tectu> are you going to show again?
2013-06-24T08:09:07 < R2COM> Allegro
2013-06-24T08:09:14 < R2COM> middle thing is something like latch
2013-06-24T08:09:26 < R2COM> show again what?
2013-06-24T08:09:55 < Thorn> 4 layers?
2013-06-24T08:10:04 < R2COM> yes 4
2013-06-24T08:10:22 < Tectu> show again the fancy board you showed before which ich missed
2013-06-24T08:11:18 < dongs> ich? wat kinda german trash is this
2013-06-24T08:11:30 < R2COM> http://i.snag.gy/Q8NFC.jpg
2013-06-24T08:11:36 < R2COM> http://i.snag.gy/6y0vT.jpg
2013-06-24T08:13:12 < R2COM> what? which german "trash" ?
2013-06-24T08:14:11 < dongs> lol nice pink dongs
2013-06-24T08:14:41 < R2COM> not sure why its like that
2013-06-24T08:14:54 < R2COM> I can change color in options, but it doesnt come into effect
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2013-06-24T08:18:01 < baird> Needs more Rainbow, am i rite?
2013-06-24T08:18:20 < R2COM> what
2013-06-24T08:18:48 < Tectu> R2COM, http://i.snag.gy/Q8NFC.jpg    <---   on the left side of the upper border of the capacitor... what is that "wave-outline" of the copper pour?
2013-06-24T08:19:53 < R2COM> well yea its just copper pour
2013-06-24T08:23:35 < R2COM> ok
2013-06-24T08:23:38 < R2COM> optimization time
2013-06-24T08:23:59 < Tectu> R2COM, here's mine: http://abload.de/img/chisig_full_3d_01knkmh.jpg
2013-06-24T08:24:35 < Thorn> glass pcb?
2013-06-24T08:24:45 < dongs> opensores pcb
2013-06-24T08:24:46 < dongs> more like
2013-06-24T08:24:57 < dongs> attn Tectu http://imageshack.us/a/img13/5297/1yje.jpg
2013-06-24T08:25:11 < Tectu> thahaha :D
2013-06-24T08:25:17 < Thorn> what does a tantalum cap do near the ram
2013-06-24T08:25:17 < Tectu> nobody can deny
2013-06-24T08:25:36 < Tectu> Thorn, currently sitting there until I decide if it will stay or not
2013-06-24T08:25:37 < dongs> that kikecad is shit?
2013-06-24T08:26:14 < Thorn> why do you need it there
2013-06-24T08:26:22 < Tectu> Thorn, I like decoupling
2013-06-24T08:26:24 < dongs> he likes useless tantalum caps
2013-06-24T08:26:33 < Tectu> Thorn, it's not in his final position
2013-06-24T08:27:01 < Tectu> Thorn, it will get removed for somehow sure. I already placed a 10µF and 100nF cap next to the VCC pins
2013-06-24T08:29:44 < R2COM> who said tantalum is useless?
2013-06-24T08:30:00 < dongs> there arnet any uses for it thee days
2013-06-24T08:30:02 < dongs> these
2013-06-24T08:30:10 < R2COM> ....what?
2013-06-24T08:30:19 < dongs> ok name some
2013-06-24T08:30:19 < R2COM> :S
2013-06-24T08:30:39 < dongs> pro irc EEs dont use tantalums
2013-06-24T08:30:42 < R2COM> what do you mean name some?
2013-06-24T08:30:43 < dongs> all they do is explode anyway
2013-06-24T08:30:44 < R2COM> ahhh
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2013-06-24T08:30:47 < R2COM> thats another thing
2013-06-24T08:30:58 < R2COM> proEEirc
2013-06-24T08:31:23 < Thorn> well not for decoupling anyway
2013-06-24T08:32:24 < R2COM> I make analysis of tantalum I want to use, then read its main doc describing its series and their use, then go through reliability report, then I might give call to app engineer for some other questions..then decide to use it. and it does *not* explode
2013-06-24T08:32:56 < R2COM> I use tantalum very often on the input power circuitry for filtering
2013-06-24T08:33:27 < Thorn> some time ago I gave a link to some photos of a relabeled Ta cap. like 10V->25V or something like that
2013-06-24T08:33:42 < R2COM> so what?
2013-06-24T08:33:50 < R2COM> what does that add to?
2013-06-24T08:33:57 < Thorn> "okay must be good for 12V"
2013-06-24T08:33:58 < Tectu> I only use it around vregs as well - that one near the SRAM was, as I said, nothing that should be there. It was just one cap I added to much to the schematics
2013-06-24T08:34:16 < Tectu> R2COM, do you know the TPS series by AVX?
2013-06-24T08:34:29 < R2COM> I dont use AVX now, I use Kemet
2013-06-24T08:34:52 < Tectu> what's the reason for that? Just personal preferences or is AVX a bad choice anyway?
2013-06-24T08:36:10 < R2COM> no its just I spent some time testing,researching and exploring behavior of Kemet caps, and they satisfy me, so I stick to them for now, they have all values I most of the time need
2013-06-24T08:37:13 < Tectu> which are? I am mostly < 12V (barely over 10V anyway) and I am always in search of Low ESR types
2013-06-24T08:37:26 < Tectu> and nothing in a hot environment or similar
2013-06-24T08:38:02 < R2COM> well if I need low esr I search it or make it have low esr, if I need higher ESR then i use ones with higher ESR
2013-06-24T08:39:10 < Tectu> you make it have low esr? as in a lot in parallel?
2013-06-24T08:39:30 < R2COM> yes or add resistance to make it have more esr
2013-06-24T08:39:56 < Tectu> in which cases do you need a higher esr on purpose? Do you do that often
2013-06-24T08:39:57 < Tectu> ?*
2013-06-24T08:40:17 < R2COM> in which cases one needs resistor?
2013-06-24T08:40:21 < R2COM> wherever I need to..
2013-06-24T08:40:37 < Tectu> I am asking for a real world application example
2013-06-24T08:40:42 < R2COM> what if for example its used at the output of some linear reg, and extremely low esr would cause loop stability problems
2013-06-24T08:40:54 < R2COM> in that case, I'd add a trace most of the time with calculated resistance
2013-06-24T08:40:59 < R2COM> to increase its esr
2013-06-24T08:41:03 < R2COM> up to some controlled level
2013-06-24T08:41:30 < Tectu> interesting
2013-06-24T08:41:32 < R2COM> which would be high enough for successful compensation, and still not very high
2013-06-24T08:41:44 < Tectu> so still in the mR range
2013-06-24T08:41:53 < R2COM> mostly..yes
2013-06-24T08:41:56 < R2COM> or no
2013-06-24T08:41:57 < R2COM> it depends
2013-06-24T08:42:01 < R2COM> its around 1Ohm or so
2013-06-24T08:42:09 < Tectu> ah
2013-06-24T08:45:54 < R2COM> does Eagle or DipTrace shove other traces/vias when one routes some trace and other traces are being an obstacle?
2013-06-24T08:46:21 < R2COM> does the trace being routed pushes away others?
2013-06-24T08:46:37 < Thorn> not in diptrace
2013-06-24T08:46:44 < R2COM> that sucks dick
2013-06-24T08:46:50 < R2COM> in Eagle it does?
2013-06-24T08:46:55 < dongs> no
2013-06-24T08:46:58 < dongs> eagle routing sucks dick
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2013-06-24T08:53:02 < Tectu> neither does it in KiCAD
2013-06-24T08:53:13 < R2COM> well thats for sure... I used Kicad
2013-06-24T08:53:36 < R2COM> although I know people did some nice stuff with Kicad
2013-06-24T08:54:20 < R2COM> heres what some guy did with Kicad: http://electronix.ru/forum/index.php?act=attach&type=post&id=40333
2013-06-24T08:54:44 < Tectu> o.O
2013-06-24T08:54:44 < Tectu> jesus
2013-06-24T08:54:50 < Tectu> those SMA, love em
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2013-06-24T08:55:46 < R2COM> I think that board was some complicated one with Virtex5,fast adcs, and communication interfaces
2013-06-24T08:56:49 < Thorn> 7260 pads, 3866 vias. nice
2013-06-24T08:57:25 < Tectu> got a link to the finished one?
2013-06-24T08:57:38 < R2COM> no
2013-06-24T08:57:43 < Tectu> also, what were your reasons to switch from KiCAD to allegro?
2013-06-24T08:57:44 < R2COM> but he got it fabbed and no problems
2013-06-24T08:58:01 < Tectu> fancy
2013-06-24T08:58:12 < R2COM> well, if someone pays for Allegro why would I torture myself in Kicad
2013-06-24T08:58:22 < R2COM> also Kicad cant do curved traces if I'm correct
2013-06-24T08:58:30 < R2COM> no length adjusting no nothing
2013-06-24T08:58:49 < R2COM> its only good for some little quick breakout boards low speed etc... nothing much else.
2013-06-24T08:59:09 < Tectu> R2COM, when did you use it last time? They now have some experimental features to create traces of a given length (yes, with curves)
2013-06-24T08:59:26 < R2COM> quite some time ago...not sure
2013-06-24T08:59:33 < Tectu> yeah, I assume that your dayjob position requires for something more than KiCAD
2013-06-24T08:59:34 < R2COM> so it can do length adjusting between different traces?
2013-06-24T09:00:28 < Tectu> yes, however it's not like clicking one trace, then another and say "length adjustement please". You have to give it the length of the length compensation you want. But that' no issue since hoovering over any trace shows you the trace length in the bottom
2013-06-24T09:00:54 < R2COM> well when I used it it wasnt like that at all
2013-06-24T09:00:57 < Tectu> so it's click, click, <trace lengths in mm or mil>, place thing, connect traces to thing
2013-06-24T09:00:58 < R2COM> and it was even worse
2013-06-24T09:01:01 < R2COM> for example
2013-06-24T09:01:19 < Tectu> they also have tools to do microstripping now
2013-06-24T09:01:20 < R2COM> I remember, when I had some trace, and then delete some parts from it, and add them again...it stopped showing me length of the *whole* trace
2013-06-24T09:01:21 < R2COM> lol
2013-06-24T09:01:51 < Tectu> KiCAD has evolved a lot since that time. I used it (well, I tried) first a few years ago as well
2013-06-24T09:01:58 < Tectu> then decided to give it another look a few weeks ago
2013-06-24T09:02:04 < Tectu> it's of course nothing compared to altium
2013-06-24T09:02:12 < R2COM> how about differential routing?
2013-06-24T09:02:16 < Thorn> in diptrace if you delete a trace it also deletes the ratline (= forgets that there needs to be a connection), so you need to do 'unroute'
2013-06-24T09:02:17 < Tectu> but it's nice for some open source stuff you don't have to pay with no limitations
2013-06-24T09:02:29 < Tectu> Thorn, hum
2013-06-24T09:02:47 < R2COM> fuck Altium
2013-06-24T09:02:53 < R2COM> and their faggot developers managers
2013-06-24T09:03:05 < R2COM> who try to sell you shit together with what you really want
2013-06-24T09:03:36 < zyp> Thorn, sounds normal to me
2013-06-24T09:03:42 < R2COM> I could probably ask money for Altium, but fuck them, hopefully they ran out of business soon
2013-06-24T09:04:00 < dongs> yeah, deleting trace = dumb
2013-06-24T09:04:03 < dongs> unroute works
2013-06-24T09:04:11 < dongs> if you delte it, you can just sync back to schematic
2013-06-24T09:04:14 < dongs> also no rpoblem
2013-06-24T09:04:21 < zyp> Thorn, eagle works the same way, except it normally disallows you to delete connections from layout view
2013-06-24T09:04:59 < R2COM> here I can do delete any part of trace, or select Connect Line-> delete, but it never will remove ratline
2013-06-24T09:05:29 < Tectu> R2COM, kicad handles segment, track and net deletions pretty sane since half a year, imo
2013-06-24T09:05:30 < Thorn> no problem except when you look through the 6 month old gerbers that were sent to the fab ang go WTF
2013-06-24T09:05:57 < R2COM> so Kicad can do now curved traces?
2013-06-24T09:06:01 < R2COM> curved angle traces?
2013-06-24T09:06:06 < zyp> R2COM, sounds like unroute to me
2013-06-24T09:06:18 < R2COM> Connect Line->Delete = Unroute, yeah
2013-06-24T09:06:48 < R2COM> but via/trace shoving is an amazing feature
2013-06-24T09:07:28 < R2COM> altium does that?
2013-06-24T09:14:28 < dongs> yeah it does.
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2013-06-24T10:02:46 < Posterdati> hi
2013-06-24T10:03:03 < Posterdati> was anybody able to work with mmc on stm32f107?
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2013-06-24T10:04:20 < Thorn> olimex has a demo https://www.olimex.com/Products/ARM/ST/STM32-P107/
2013-06-24T10:07:55 < zyp> mmc?
2013-06-24T10:08:03 < zyp> as in actual mmc or sd card?
2013-06-24T10:13:15 < Posterdati> on the board theres a microsd hc port
2013-06-24T10:13:50 < Posterdati> I downloaded an SD demo from olimex, but it is compatible IAR not gcc
2013-06-24T10:15:25 < Posterdati> connected on SPI3
2013-06-24T10:21:30 < zyp> well, my point is that mmc and sd cards are electrically compatible, but have different command sets
2013-06-24T10:22:07 < zyp> so while both can fit in the same socket, you have to distinguish and handle seperately in the code
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2013-06-24T10:25:24 < Posterdati> yes ok, I've got an SD card
2013-06-24T10:26:35 < Thorn> A mechanical sliding tab on the side of the card allows the user to set or clear the write protection on a card. A matched switch on the socket side indicates to the SDIO card host module that the card is write-protected. The SDIO card host module is responsible for protecting the card. The position of the write protect switch is unknown to the internal circuitry of the card.
2013-06-24T10:26:42 < Thorn> wat.
2013-06-24T10:27:07 < Thorn> I've never seen microsd sockets with a write protect pin
2013-06-24T10:27:29 < R2COM> mmc also requires buying license right?
2013-06-24T10:27:39 < R2COM> also, mmc cards not rated for -40:85C right?
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2013-06-24T10:34:45 < Tectu> zyp, olimex understands mmc as SD card over SPI
2013-06-24T10:34:55 < Tectu> instead of SDIO/SDC
2013-06-24T10:35:27 < jon1012> on stm32, sdio is faster than spi ?
2013-06-24T10:36:29 < dongs> of course hardware block is faster
2013-06-24T10:36:31 < dongs> than ghetto trash
2013-06-24T10:36:47 < zyp> dongs, spi is also hardware block
2013-06-24T10:37:00 < zyp> main difference is that sdio is 4 bit wide, spi is 1
2013-06-24T10:37:09 < zyp> so it's four time faster at same clock rate
2013-06-24T10:37:23 < dongs> zyp, but SDIO is handling other stuff
2013-06-24T10:37:47 < zyp> but that doesn't impact speed as much
2013-06-24T10:37:47 < Tectu> zyp, frankly SDIO is 8-bit. SD cards just use 4
2013-06-24T10:38:09 < zyp> Tectu, of course, I were talking in the context of SD cards
2013-06-24T10:38:21 < jon1012> btw, does the stm32 support the 8 bit sdio for sd cards ? (4 bits on lower edge, 4 bits on rising edge, UHS)
2013-06-24T10:38:30 < zyp> Tectu, I also ignored the fact that SDIO also can be used in 1-bit mode
2013-06-24T10:38:36 < Tectu> zyp, damn... I hoped I'd know something more than you for this very first time :P
2013-06-24T10:38:37 < zyp> jon1012, no, only SDR
2013-06-24T10:39:04 < jon1012> ok
2013-06-24T10:39:44 < zyp> jon1012, also keep in mind that UHS is restricted to 1.8V operation
2013-06-24T10:39:53 < jon1012> oh
2013-06-24T10:40:01 < jon1012> didn't know that part
2013-06-24T10:41:08 < R2COM> hmm
2013-06-24T10:41:18 < R2COM> SandisK microSD -25:85C
2013-06-24T10:42:41 < dongs> those edges
2013-06-24T10:42:46 < dongs> hard to bend them at 3.3V
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2013-06-24T10:43:34 < dongs> R2COM is always checking mintemp
2013-06-24T10:43:37 < dongs> cuz his shit flies in outer space
2013-06-24T10:43:55 < dongs> no industrial temp rating? fuck off, no business with you
2013-06-24T10:44:03 < dongs> commercial just DOESNT CUT IT
2013-06-24T10:44:08 < R2COM> well..not always..
2013-06-24T10:44:24 < R2COM> for some tests/experiments, when its definitely known that temp wond go below -15C
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2013-06-24T10:44:37 < R2COM> it is *ok* to use other stuff if all carefully thought through
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2013-06-24T10:45:36 < Thorn> "yes but my lab alone is -15...+40, imagine what it's going to be like where they're used"
2013-06-24T10:45:52 < dongs> just use a 7805
2013-06-24T10:45:58 < dongs> it'll heat up the board
2013-06-24T10:46:11 < R2COM> use peltier
2013-06-24T10:46:21 < R2COM> ;)
2013-06-24T10:46:22 < dongs> thats expensive.
2013-06-24T10:46:28 < R2COM> not really
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2013-06-24T11:22:15 < Posterdati> zyp: may I directly use the SPI3 to drive SD card?
2013-06-24T11:22:42 < zyp> sure, if you insist on using SPI instead of SDIO
2013-06-24T11:23:43 < Posterdati> yes...
2013-06-24T11:25:08 < Posterdati> zyp: do you think it's better to develop a driver from scratch?
2013-06-24T11:25:44 < Thorn> if you want to learn something
2013-06-24T11:26:15 < Posterdati> Thorn: I know how to use SPI, never used an SD
2013-06-24T11:26:27 < Posterdati> I mean this way
2013-06-24T11:27:30 < jpa-> Posterdati: i would just pick up one of the examples that come with fatfs
2013-06-24T11:28:17 < jpa-> SD cards have a few quirks (different versions of the protocol etc.) so i don't recommend writing the driver from scratch
2013-06-24T11:28:43 < jpa-> it's easy enough to get a driver that works in 90% of the cases; takes a lot of testing to find out the 10%
2013-06-24T11:28:47 < zyp> I'd say it depends on your goals
2013-06-24T11:29:16 < zyp> if you just want something working, go with existing code
2013-06-24T11:30:48 < Posterdati> zyp: problem is that the only SD example for my board is not working
2013-06-24T11:32:24 < zyp> http://cgit.jvnv.net/laks_demo/tree/main.cpp?h=usb_msc <- the SD_driver class here is my take on one, but it's barely working and thus useless for anything but a starting point for writing your own
2013-06-24T11:33:42 < Posterdati> zyp: is that for 107?
2013-06-24T11:34:10 < zyp> it's written for F4, but should be easily portable to F107
2013-06-24T11:34:24 < zyp> the SDIO controller is the same
2013-06-24T11:34:34 < Posterdati> but there's no SDIO on 107
2013-06-24T11:34:43 < zyp> huh?
2013-06-24T11:35:31 < Posterdati> page 541/1096 of RM0008 rev 14
2013-06-24T11:36:18 < Posterdati> This section applies to high-density and XL-density performance line devices only.
2013-06-24T11:36:31 < Posterdati> no 105 and 107 I suppose
2013-06-24T11:37:07 < zyp> does RM0008 even apply to 107?
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2013-06-24T11:37:59 < Posterdati> yes
2013-06-24T11:38:18 < dongs> rblog
2013-06-24T11:39:02 < Posterdati> STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx and STM32F107xx advanced ARM-based 32-bit MCUs
2013-06-24T11:40:09 < zyp> dongs, it's short for «rageblog»
2013-06-24T11:40:19 < dongs> i kno
2013-06-24T11:40:23 < dongs> pack those attributes
2013-06-24T11:40:27 < zyp> it's where my code shouts about all the bullshit that happens
2013-06-24T11:40:30 < dongs> with rage
2013-06-24T11:41:56 < Tectu> when I do a 4-layered PCB and one of the inner layers (the one below the top one) is a ground plane, do I still add a ground plane to every not-covered spot on the top and bottom layer or is this usually not done anymore?
2013-06-24T11:42:44 < Thorn> if you do make sure you stitch it all together
2013-06-24T11:42:56 < zyp> I tend to do
2013-06-24T11:43:30 < Tectu> zyp, is this just personal preferences or some technical reason? (beside the fact that your manufacturer does not have to change the etching solution that often)
2013-06-24T11:44:06 < Posterdati> zyp: so no SDIO on 107
2013-06-24T11:44:28 < zyp> Tectu, http://bin.jvnv.net/f/eaiEM.png <- well stitched ground plane on top, despite inner ground plane
2013-06-24T11:44:55 < zyp> Tectu, mostly because no reason not to
2013-06-24T11:45:13 < Tectu> zyp, for example in the upper left corner... those vias... are they just blindly placed?
2013-06-24T11:45:21 < Tectu> they look a bit arbitrary
2013-06-24T11:45:36 < MrMobius> is there any way to revoer all that copper that gets etched off?
2013-06-24T11:45:47 < zyp> Tectu, 3mm apart or so
2013-06-24T11:46:17 < Tectu> MrMobius, not with the etching solutions I know. And if it would be reliable even when it would be possible, then somebody would do it
2013-06-24T11:46:40 < Tectu> zyp, I mean the ones below the right part of the SDIO connector
2013-06-24T11:46:41 < MrMobius> it seems like a huge waste
2013-06-24T11:46:51 < zyp> Tectu, ah, they are dictated by bottom layer
2013-06-24T11:47:01 < Tectu> human kind does waste other stuff that would be easily to recover
2013-06-24T11:47:02 < zyp> http://bin.jvnv.net/f/Uby5B.png
2013-06-24T11:47:08 < Tectu> zyp, aaah, thanks
2013-06-24T11:47:16 < Tectu> that seems to make sense :)
2013-06-24T11:47:23 < Tectu> I like that blue-ish color
2013-06-24T11:49:01 < Thorn> MrMobius: https://www.google.com/search?q=recover+copper+from+etching+solution
2013-06-24T11:49:12 < zyp> Tectu, it's picked semi-randomly
2013-06-24T11:49:14 < zyp> :p
2013-06-24T11:50:17 < dongs> grids
2013-06-24T11:50:21 < Tectu> zyp, how can you semi randomly pick a color?
2013-06-24T11:50:52 < zyp> turn the color dial until you find something that «probably looks good enough»
2013-06-24T11:51:41 < zyp> http://bin.jvnv.net/f/XOWoX.png <- last time I did it I got a darker blue
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2013-06-24T12:06:34 < Tectu> the other blue looks a bit more gentle
2013-06-24T12:06:38 < Tectu> I'd recommend you to stick with it
2013-06-24T12:06:58 < Tectu> I like to use #7DB3B8 myself
2013-06-24T12:07:36 < Thorn> shit, theotherblue.com is already registered. would be a great domain to have
2013-06-24T12:09:07 < Tectu> zyp, I just found an even better one: #ADD8E6
2013-06-24T12:15:29 < zyp> *yawn*
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2013-06-24T12:45:58 < qyx_> Tectu: #3f7aff
2013-06-24T12:47:34 < Tectu> qyx_, I don't like that one
2013-06-24T12:49:28 < Tectu> give #0051B3 a try
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2013-06-24T13:14:25 <+Steffanx> There are many other colours you can use you know, Thorn :)
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2013-06-24T13:38:39 < Thorn> what 4x resistor network package do I use for manual soldering?
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2013-06-24T13:39:28 <+Steffanx> One that is large enough for manual soldering? :)
2013-06-24T13:39:43 < dongs> i just designed somethin with 0804 resistors
2013-06-24T13:39:51 < dongs> er 4x network
2013-06-24T13:39:59 < dongs> YC124J-1.0KCT-ND
2013-06-24T13:40:12 < Posterdati> zyp: nice board, neat layout
2013-06-24T13:40:14 < dongs> other shit i used was 1206
2013-06-24T13:40:23 < dongs> thats next size up
2013-06-24T13:43:12 < Thorn> so e.g. 1206 is 4x 0603 resistors stacket together
2013-06-24T13:44:12 < dongs> kinda
2013-06-24T13:44:18 < dongs> at least thats waht htey call it
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2013-06-24T13:44:25 < dongs> i dont see how you can fit 3 0603 into that space but yeah
2013-06-24T13:44:29 < dongs> the 0804 is alsoc alled 0402
2013-06-24T13:44:37 < dongs> 0805 is 0.5mm pitch
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2013-06-24T13:46:08 < dongs> 1206 is like 0.8mm i think.
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2013-06-24T13:54:46 < jpa-> i have used 0402, but it's not as trivial anymore
2013-06-24T13:54:57 < jpa-> i mean, 4x 0402
2013-06-24T14:00:01 < Thorn> okay I'll use YC164 then
2013-06-24T14:01:56 < dongs> 164 is 1206 right?
2013-06-24T14:02:10 < Thorn> yes, 0.8mm pitch
2013-06-24T14:02:25 < dongs> also convex.
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2013-06-24T14:04:28 < Thorn> what's the practical difference between convex and normal?
2013-06-24T14:04:36 < dongs> no,convex is normal
2013-06-24T14:04:45 < dongs> http://www.niccomp.com/help/presentations/NRSN_compare_1103.pdf
2013-06-24T14:09:18 < Thorn> okay thanks
2013-06-24T14:11:53 < dongs> i was surprised how aids concave is too
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2013-06-24T14:26:35 < Tectu> there was some issue with the F4 and the PWRON pin, right? Some revision needed it to be tied to GND others to VDD? I have in mind that the LQFP-176 package needs to be tied to VDD and that only the 100pin package had issues?
2013-06-24T14:28:02 < karlp> what does the errata sheet say?
2013-06-24T14:31:24 < Thorn> what's PWRON
2013-06-24T14:36:11 < jpa-> PDRON
2013-06-24T14:36:21 < jpa-> Tectu: only 100pin package has issues
2013-06-24T14:36:56 < jpa-> and yes, usually you want PDRON tied high
2013-06-24T14:37:03 < Tectu> jpa-, thanks
2013-06-24T14:37:08 < Tectu> PDR, exactly
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2013-06-24T14:55:20 < Thorn> what's PDRON. my datasheets don't have that. is it in some new f4 variants?
2013-06-24T14:56:10 < Thorn> an lpc43 board like the one zyp did for $200 lol http://www.terraelectronica.ru/news_postup.php?ID=2752
2013-06-24T14:58:26 <+Steffanx> This one has buttons and a magjack :)
2013-06-24T14:58:46 < Thorn> and some nor lflash
2013-06-24T14:58:51 <+Steffanx> and NOR flash, yeah
2013-06-24T14:59:03 <+Steffanx> but not fancy leds for a disco :(
2013-06-24T14:59:16 < Thorn> if it had an fpga instead it would be somewhat more attractive lol
2013-06-24T14:59:46 <+Steffanx> Get that board dongs showed yesterday. With the uv erasable fgpa.
2013-06-24T15:00:06 < Thorn> haven't seen that
2013-06-24T15:01:10 <+Steffanx> <dongs> http://www.tokudenkairo.co.jp/art7/ why would this be nearly $900
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2013-06-24T15:03:19 < dongs> haha
2013-06-24T15:05:32 < Thorn> well I guess selling stuff to EEs in japan is profitable in general
2013-06-24T15:05:43 < dongs> there are EEs in japan?
2013-06-24T15:05:43 < Thorn> is it actually uv erasable?
2013-06-24T15:05:57 < dongs> Thorn: yes.
2013-06-24T15:05:59 < dongs> both chips.
2013-06-24T15:06:08 < Thorn> wtf
2013-06-24T15:06:11 <+Steffanx> See the 3d render Thorn :)
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2013-06-24T15:33:59 < Thorn> attn dongs http://www.copterexpress.ru/  <-- quadcopter delivery service, not sure if trolling
2013-06-24T15:34:41 < dongs> in soviet russia, they're laways trolling
2013-06-24T15:34:55 < dongs> 1200 rur = $36
2013-06-24T15:35:59 < Thorn> "but I can just steal a copter! - no, it will hover at 20m and the package will descend on a winch."
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2013-06-24T15:39:47 < Thorn> I wonder how they are going to provide video feed and telecommand over a large city. 3G?
2013-06-24T15:40:26 <+Steffanx> "in soviet russia, they're laways trolling" :)
2013-06-24T15:42:20 < Thorn> I can call them but I need to activate caller id protection first lol
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2013-06-24T15:55:28 < dongs> 5kg payload and 40km range, trollin for sure
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2013-06-24T17:11:22 < Posterdati> zyp: I'll write the driver from scratch
2013-06-24T17:12:22 < jpa-> why?
2013-06-24T17:12:36 < Posterdati> because I didn't find a working solution
2013-06-24T17:13:18 < jpa-> what filesystem are you going to use it with?
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2013-06-24T17:14:09 < Posterdati> fat
2013-06-24T17:14:20 < Posterdati> since windows pc should read the sd contents
2013-06-24T17:14:39 < jpa-> then what is wrong with the elm chan fatfs examples?
2013-06-24T17:14:46 < Posterdati> I'd like to sample i2c sensor and write data on sd using DMA
2013-06-24T17:15:05 < jpa-> (or if you are lazy, just use chibios)
2013-06-24T17:15:20 < dongs> uh
2013-06-24T17:15:42 < Posterdati> jpa-: I can't use chibios (for the nth time)
2013-06-24T17:16:05 < jpa-> then use the fatfs examples
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2013-06-24T17:16:14 < Posterdati> jpa-: for stm32f107??
2013-06-24T17:16:23 < jpa-> sure, the spi peripheral is the same on all
2013-06-24T17:16:39 < Posterdati> ok
2013-06-24T17:16:56 < Posterdati> http://elm-chan.org/fsw/ff/00index_e.html
2013-06-24T17:17:30 < jpa-> can't remember if there is a STM32 + SPI example, but just pick one of the SPI example projects and add the STM32 spi calls
2013-06-24T17:17:59 < Posterdati> jpa-: do you think that using ext2 or extx fs is better?
2013-06-24T17:18:14 < jpa-> not if you need to access using windows
2013-06-24T17:18:20 < Posterdati> yes
2013-06-24T17:19:21 < jpa-> if you are lazy, here is most of what you need (though it includes some freertos semaphore calls for thread safety).. basically just the fatfs example with STM32 SPI calls thrown in  https://svn.kapsi.fi/jpa/paatti/mmc.c
2013-06-24T17:20:33 < jpa-> no need to write MMC driver from scratch, just adapt one of the pre-existing ones
2013-06-24T17:22:11 < Posterdati> ok
2013-06-24T17:24:23 < Posterdati> SD would be suffice I think
2013-06-24T17:24:39 < jpa-> sd, mmc, whatever, the protocol is mostly the same
2013-06-24T17:24:44 < Posterdati> jpa-: I'd prefer a non windows readable fs
2013-06-24T17:25:09 < Posterdati> jpa-: which is straightforward to implement?
2013-06-24T17:25:14 < jpa-> uh.. so first you say a windows pc should read it, and now you prefer a non windows readable fs?
2013-06-24T17:25:30 < Posterdati> jpa-: well, I was thinking about it
2013-06-24T17:25:53 < Posterdati> a windows readable could make a friend of mine work on data read from i2c sensors
2013-06-24T17:26:01 < jpa-> Posterdati: the protocol varies a bit per card capacity - if you make your own driver from scratch, it will probably work only for some cards
2013-06-24T17:26:20 < jpa-> anyway, FAT is not bad for SD cards
2013-06-24T17:26:28 < jpa-> the cards are designed for FAT anyway
2013-06-24T17:35:26 < gxti> fat has licensing issues, it's unfortunate that one does not really have much choice
2013-06-24T17:43:39 < jpa-> fat with short names only should be fine, right?
2013-06-24T17:44:10 < gxti> free of licensing requirements, but crippled
2013-06-24T17:45:20 < jpa-> works for many things
2013-06-24T17:46:04 < gxti> but it still sucks that we have to use a crippled ancient filesystem because of patents, if interoperability is desired
2013-06-24T17:48:40 < jpa-> time to implement USB MTP + some good filesystem
2013-06-24T17:48:54 < jpa-> but currently there aren't really that many good alternative filesystems for SD cards either
2013-06-24T17:49:20 < jpa-> many of the "better" filesystems like ext3 are very slow on cheap sd cards due to the write ordering & journal
2013-06-24T17:49:44 < gxti> yes, there is probably a better choice
2013-06-24T17:49:52 < gxti> i presume it is also much more complex
2013-06-24T17:50:15 < jpa-> doesn't have to be more complex
2013-06-24T17:52:36 < jpa-> and IIRC the patents are going to expire in a few years anyway
2013-06-24T17:53:33 < gxti> google lists the 'priority date' of the remaining ones as april 1993, which would suggest already expired, but i don't know if that's the correct interpretation. call a lawyer.
2013-06-24T17:54:51 < jpa-> i'm not in USA anyway, so i wouldn't care :P
2013-06-24T17:55:27 < gxti> unless you're in a "developing" nation that doesn't give a shit you're still subject to it
2013-06-24T17:55:40 < gxti> but unless you're selling thousands of units nobody will notice anyway
2013-06-24T17:56:20 < jpa-> yeah, "it depends"
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2013-06-24T18:21:27 < Posterdati> jpa-: I cannot use a licensed product
2013-06-24T18:24:35 < jpa-> what is that supposed to mean? a product for which you need to pay for a license?
2013-06-24T18:24:56 < Posterdati> I have to sell my product
2013-06-24T18:24:58 < jpa-> everything has a license, the terms just vary
2013-06-24T18:25:05 < Posterdati> yes
2013-06-24T18:25:19 < Posterdati> is it supposed to pay for fat license?
2013-06-24T18:25:30 < jpa-> if you use long file names, "maybe"
2013-06-24T18:25:35 < jpa-> if you don't, "no"
2013-06-24T18:25:36 < Posterdati> ah ok
2013-06-24T18:25:54 < jpa-> consult lawyer in your country if you want real answers
2013-06-24T18:25:56 < Posterdati> I prefer to use gnu license and contribute to gnu product tehn
2013-06-24T18:26:07 < Posterdati> jpa-: the answer is yes, then
2013-06-24T18:26:36 < jpa-> remember that anything might be patented without you knowing it
2013-06-24T18:26:53 < jpa-> best way to go about it is just to ignore all patents and pay up if they come after you ;)
2013-06-24T18:33:01 <+Steffanx> That's the spirit jpa-
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2013-06-24T18:59:19 < trepidaciousMBR> Posterdati: You're probably sick of this question, but why can't you use ChibiOS?
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2013-06-24T19:10:13 < Thorn> chibios is GPL no?
2013-06-24T19:11:10 < jpa-> but now he said he wants to use "gnu license"
2013-06-24T19:11:38 <+Steffanx> chibios is 3 licenses :)
2013-06-24T19:11:49 <+Steffanx> *has
2013-06-24T19:12:05 < Thorn> GPL2, GPL2.1 and GPL3?
2013-06-24T19:14:22 <+Steffanx> GPL, GPL 3 with exception and commercial
2013-06-24T19:15:40 <+Steffanx> I wonder why they didnt throw in more..
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2013-06-24T19:37:00 < l4cr0ss> is 0x88 - 0xCC going to set the carry flag
2013-06-24T19:37:08 < l4cr0ss> or, is it supposed to, i should say
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2013-06-24T19:43:17 <+Steffanx> gxti after whom is your ntp server named?
2013-06-24T19:43:56 < qyx_> hm, ordering max21000 samples
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2013-06-24T19:52:50 <+Steffanx> Whats the plan qyx_?
2013-06-24T19:53:03 < qyx_> dont know yet
2013-06-24T19:53:22 <+Steffanx> heh, so justb ecause you can
2013-06-24T19:54:49 < qyx_> i no, i want to compare it to l3g4200
2013-06-24T19:54:52 < qyx_> it has better specs
2013-06-24T19:54:57 < qyx_> and much lower price
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2013-06-24T20:01:01 < rlc> anyone has worked with the USB?
2013-06-24T20:03:31 < zyp> sure
2013-06-24T20:04:00 < rlc> cool
2013-06-24T20:04:29 < rlc> I'm trying to debug my usb but not sure if it's hardware or software
2013-06-24T20:05:01 < zyp> what's the problem?
2013-06-24T20:05:01 < rlc> i'm plugging a usb flash drive on the FS port
2013-06-24T20:05:24 < rlc> I'm also using the ST usb library
2013-06-24T20:05:33 < zyp> ah, so you're running it as host
2013-06-24T20:05:50 < rlc> yes
2013-06-24T20:05:50 < zyp> I've only used device mode
2013-06-24T20:06:01 < rlc> i see
2013-06-24T20:06:08 < zyp> so I'm not sure how much help I can be, but please continue
2013-06-24T20:06:37 < rlc> but is there a way to know if the device has been detected through the usb registers?
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2013-06-24T20:07:00 < zyp> should be
2013-06-24T20:07:04 < rlc> perhaps a flip of an status bit?
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2013-06-24T20:07:26 < rlc> bu tthe problem is, there are tons of registers
2013-06-24T20:07:27 < zyp> I suggest looking at the host-specific status registers in the manual
2013-06-24T20:07:46 < zyp> this is F4 I assume?
2013-06-24T20:07:52 < rlc> yes, F4
2013-06-24T20:08:44 < zyp> PCDET in OTG_FS_HPRT is probably what you want
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2013-06-24T20:08:53 < zyp> or PCSTS
2013-06-24T20:09:16 < rlc> cool. gonna check that. thanks
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2013-06-24T20:49:32 < rlc> zyp: I have not been able to get anything detected.  Do I need to add any pull ups on the D+ and D- line by the way?
2013-06-24T20:50:19 < zyp> no, those are internal
2013-06-24T20:50:59 < PaulFertser> USB hosts use pulldowns actually, on both lines.
2013-06-24T20:51:45 < zyp> yes, but they are internal
2013-06-24T20:53:44 < rlc> i see. I have both the D+ and D- pin on the F4 directly wired ( no resistors in between) to the USB A connector pin 3 and 2 respectively. Am I doing things right?
2013-06-24T20:55:12 < zyp> you haven't hooked up the ID pin? are you forcing it to host mode in software?
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2013-06-24T20:56:14 < rlc> nothing on the ID pin. I did not change anything for the ID pin in software either
2013-06-24T20:56:40 < zyp> ah, then that's probably your problem
2013-06-24T20:56:55 < rlc> i see.
2013-06-24T20:57:13 < rlc> should I pull the pin up or down for detection?
2013-06-24T20:57:25 < zyp> down
2013-06-24T20:58:00 < rlc> any particular value of resistor or anything high enough?
2013-06-24T20:58:28 < zyp> just hook it to gnd
2013-06-24T20:58:33 < ds2> id gnd = host
2013-06-24T20:58:36 < ds2> id float = device
2013-06-24T20:58:48 < ds2> host side should pull up id weakly to detect the condition
2013-06-24T20:59:00 < zyp> you can also set the FHMOD bit in some register to force it to host mode and ignore ID pin
2013-06-24T20:59:28 < rlc> ok, thanks, gonna try it
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2013-06-24T21:42:59 < Thorn> how do you connect a usb flash stick to an otg port? is this use case not allowed by the spec?
2013-06-24T21:44:47 < zyp> of course it is
2013-06-24T21:47:16 < Tectu> as a wise man once explained, the OTG is actually just the layer detecting if you connected a device or a host to the USB port. You'll then have to provide the required driver yourself and therefore you'd be able to interface any USB device
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2013-06-24T21:47:34 < Thorn> but the connectors ares somewhat different
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2013-06-24T21:48:08 < Tectu> clearly you are needing one of those: http://images.otto.de/asset/mmo/formatz/Kabel-Adapter-Adapter-USB-A-Buchse-auf-Micro-USB-A-Stecker-7014554.jpg
2013-06-24T21:48:26 < Tectu> it's just 1:1 wiring inside
2013-06-24T21:48:31 < Thorn> are these allowed by the spec?
2013-06-24T21:48:39 < Tectu> it's just some wiring
2013-06-24T21:48:45 < Tectu> there's nothing active in there
2013-06-24T21:48:51 < Thorn> I seem to recall that most things like this one aren't
2013-06-24T21:48:53 < Tectu> also, to which specs are you refering?
2013-06-24T21:49:16 < Thorn> usb spec and other auxilliary documents
2013-06-24T21:49:21 < zyp> Thorn, this one is proper
2013-06-24T21:49:59 < Thorn> okay good to know thanks
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--- Day changed Tue Jun 25 2013
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2013-06-25T00:36:31 < Thorn> "PDR_ON no more available on LQFP100 package."
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2013-06-25T01:22:34 < englishman> dear mr dongs
2013-06-25T01:22:35 < englishman> if (toBootloader) {
2013-06-25T01:22:35 < englishman>     *((uint32_t *)0x20004FF0) = 0xDEADBEEF; // 20KB STM32F103
2013-06-25T01:22:52 < englishman> why does this work? i don't see documentation for this
2013-06-25T01:23:12 < englishman> all i know is, that word is placed in sram, and the chip is rebooted
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2013-06-25T02:21:14 < dongs> englishman: yes thats how it works
2013-06-25T02:21:24 < dongs> and reset vector checks the word and jumps.
2013-06-25T02:21:32 < dongs> i should really fix that shit to use bkp ram instead
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2013-06-25T02:23:14 < englishman> which document covers the reset vector?
2013-06-25T02:23:34 < englishman> also, are factory fresh chips loaded with the bootloader?
2013-06-25T02:25:48 < dongs> yeah.
2013-06-25T02:25:56 < dongs> what do you mean 'reset vector'
2013-06-25T02:25:57 < dongs> its the asm
2013-06-25T02:26:01 < dongs> in .s file
2013-06-25T02:26:08 < dongs> you can just make it do whatever.
2013-06-25T02:26:15 < dongs> normally it just jumps to SystemInit and then main.
2013-06-25T02:28:14 < englishman>  0xDEADBEEF is the location to jump to?
2013-06-25T02:28:18 < dongs> nope
2013-06-25T02:28:57 < dongs> http://bcas.tv/paste/results/8r3YEF19.html
2013-06-25T02:34:00 < englishman> ahhhh ok, kha did not include this in his repo
2013-06-25T02:34:04 < englishman> but i see it in baseflight
2013-06-25T02:34:07 < englishman> i understand now
2013-06-25T02:34:18 < englishman> custom startup.s
2013-06-25T02:34:29 < dongs> yeah.
2013-06-25T02:34:51 < englishman> thanks a lot
2013-06-25T02:35:29 < englishman> then Reboot_Loader launches the included serial bootloader
2013-06-25T02:37:13 < dongs> well,  just the last 2-3 lines in it does.
2013-06-25T02:37:17 < dongs> the other shit turns on leds and stuff.
2013-06-25T02:37:19 < dongs> so its irrelevant.
2013-06-25T02:41:54 < Simon--> leds are always relevant
2013-06-25T02:42:09 < dongs> heh
2013-06-25T02:42:19 < dongs> trudat
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2013-06-25T06:20:47 < upgrdman> seems like many gyros use "weird" refresh rates. not a nice base-2 number that makes multiplication/division fast, and not a nice base-10 number thats trivial for humans to think about. any idea why?
2013-06-25T06:29:27 < emeb_mac> designed by martians
2013-06-25T06:34:22 < upgrdman> :/
2013-06-25T06:36:17 < ds2> nlah
2013-06-25T06:36:20 < ds2> wrong channel
2013-06-25T06:36:29 < ds2> blah
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2013-06-25T07:04:37 < upgrdman> f0 data sheets listed alternate functions for the pins on ports C D and F, but the AF table only lists AF#'s for ports A and B. how do i find out what AF# to use??
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2013-06-25T07:12:32 < gnomad> http://www.freebsdnews.net/2013/06/24/freebsd-based-orbis-os-powering-sony-ps4/
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2013-06-25T07:42:30 < upgrdman> whats EVENTOUT as a GPIO AF?
2013-06-25T07:47:36 < dongs> something new
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2013-06-25T08:53:03 < jpa-> upgrdman: isn't there only one AF per pin in ports C-F?
2013-06-25T08:53:37 < upgrdman> i don't know. does it say that somewhere?
2013-06-25T08:53:40 < jpa-> also, eventout is the same old stuff that always confuses beginners; just some ARM cpu feature that is rarely useful outside multiprocessor systems
2013-06-25T08:53:51 < upgrdman> o :)
2013-06-25T08:54:03 < jpa-> upgrdman: well.. you can count to one, right? :)
2013-06-25T08:54:09 < upgrdman> yes
2013-06-25T08:54:38 < upgrdman> but how do you know if c/d/f only has one AF... presumably AF0?
2013-06-25T08:57:46 < jpa-> you look at any of the port c/d/f pin in the "Pin definitions" table and see that there is only one entry in the "Alternate functions" column
2013-06-25T08:58:10 < upgrdman> often times there some logic that needs to be done, but it can be done 100% at compile time. is there any way to make sure the conditions get evaluated at compile time down to min instruction, instead of keeping logic in the firmware that doesn't need to be there?
2013-06-25T08:58:31 < upgrdman> jpa-: o. ok.
2013-06-25T08:59:04 < jpa-> then you look at the reference manual and see that there isn't even GPIO_AFR register for C-D
2013-06-25T08:59:07 < jpa-> *C-F
2013-06-25T08:59:31 < upgrdman> oh shit. doh! ok
2013-06-25T09:00:01 < jpa-> upgrdman: the problem you suggest ("figure out the minimum instructions necessary to implement this logic") may be insolvable in the general case
2013-06-25T09:00:09 < jpa-> but compiler optimizations will get you quite far
2013-06-25T09:04:23 < upgrdman> ok
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2013-06-25T09:05:35 < upgrdman> I'm just asking cause a wrote a function to make setting up a gpio a one-line ordeal. but theres logic in there, which could in theory be evaluated 100% at compile time to get rid of jumps, etc.
2013-06-25T09:05:49 < upgrdman> but I'm not short on flash, so i don't care atm.
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2013-06-25T10:26:16 < dongs> whats the filter with L+C in parallel and 2 C to gnd on both sides
2013-06-25T10:26:19 < dongs> is that bandpass or notch
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2013-06-25T10:27:54 < zyp> sounds like lowpass to me
2013-06-25T10:28:02 < dongs> is it?
2013-06-25T10:28:03 < dongs> oh hm
2013-06-25T10:28:17 < dongs> it cuts anything below? or passes
2013-06-25T10:28:39 < zyp> passes
2013-06-25T10:28:47 < dongs> hm, that cant be right then
2013-06-25T10:29:31 < zyp> oh, wait, I'm dumb
2013-06-25T10:29:45 < dongs> http://i.imgur.com/5kp4Oud.png
2013-06-25T10:29:52 < dongs> left -> in, right _> out
2013-06-25T10:30:04 < zyp> ah, no, that's what I imagined
2013-06-25T10:30:26 < jpa-> almost pi filter
2013-06-25T10:30:33 < dongs> pi?
2013-06-25T10:30:52 < dongs> capacitor input filter.. according to wikipedo
2013-06-25T10:31:14 < dongs> yes
2013-06-25T10:31:16 < dongs> i think thats the purpose
2013-06-25T10:31:40 < zyp> well, just consider DC; at DC the caps can be considered open and the inductor can be considered a short
2013-06-25T10:31:48 < zyp> so it will pass DC
2013-06-25T10:32:47 < jpa-> it has multiple poles i think, so a bit complex
2013-06-25T10:44:43 < dongs> hm
2013-06-25T10:44:49 < dongs> its definitely not FM removal filer
2013-06-25T10:44:49 < dongs> filter
2013-06-25T10:45:03 < dongs> those have extra  coil shit
2013-06-25T10:45:05 < dongs> though it sorta looks like it
2013-06-25T10:46:11 < dongs> http://www.dipol.com.pl/img/FM-stop_schemat.gif
2013-06-25T10:57:13 < Tectu> where's the bluetooth?
2013-06-25T11:01:55 < dongs> b;iewjat
2013-06-25T11:03:06 <+Steffanx> Yes that too
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2013-06-25T11:58:52 < dongs> retweet http://i.imgur.com/zPkiHWe.gif
2013-06-25T12:00:57 < zyp> also retweet: http://translationparty.com/#10941686
2013-06-25T12:02:03 < dongs> seems broken
2013-06-25T12:02:05 < dongs> all is ee is tits
2013-06-25T12:02:44 < zyp> oh
2013-06-25T12:02:52 < zyp> worked a couple of minutes ago
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2013-06-25T12:18:23 < dongs> zyp: works now
2013-06-25T12:18:27 < dongs> lolling liberally
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2013-06-25T13:25:19 < dongs> hmm
2013-06-25T13:25:25 < dongs> looking at toshiba display bridge roadmap
2013-06-25T13:25:34 < dongs> they have a bunch of DSI->* and *->DSI converters
2013-06-25T13:25:40 < dongs> hdmi/edp/rgb/etc
2013-06-25T13:25:56 < zyp> thinking about hmdi->DSI->DP?
2013-06-25T13:26:05 < dongs> no, i can already do hdmi>dp with that ST chip
2013-06-25T13:26:07 < dongs> its active now
2013-06-25T13:26:17 < dongs> my pals in taiwan have the datasheet/hardware
2013-06-25T13:26:22 < dongs> STDP2600 or whatever
2013-06-25T13:26:23 < zyp> ah
2013-06-25T13:26:32 < zyp> then what?
2013-06-25T13:26:37 < dongs> no jusdt looking
2013-06-25T13:26:40 < dongs> we have some other retard project here
2013-06-25T13:26:47 < dongs> hdmi -> something I forget
2013-06-25T13:26:49 < dongs> related to DSI
2013-06-25T13:26:50 < dongs> hdmi capture i think
2013-06-25T13:26:59 < dongs> so they're thinkind hDMI->DSI ad then use a Soc with camera interface
2013-06-25T13:27:09 < zyp> HDMI->CSI then?
2013-06-25T13:27:13 < dongs> yeah
2013-06-25T13:27:21 < zyp> we were joking about rpi HDMI capture once
2013-06-25T13:27:47 < dongs> yeah i heard
2013-06-25T13:27:49 < dongs> thats related
2013-06-25T13:28:08 < dongs> TC358743
2013-06-25T13:28:11 < dongs> MIPI CSI2 TX
2013-06-25T13:28:12 < dongs> 4 Data Lanes x 1ch,
2013-06-25T13:28:16 < dongs> HDMI 1.4
2013-06-25T13:29:43 < dongs> hm, they got some UHS2 shit
2013-06-25T13:29:47 < dongs> 2TB memory cards heh
2013-06-25T13:29:57 < dongs> UHS-II SDXC Host Controller with CPRM
2013-06-25T13:29:58 < dongs> lol cprm
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2013-06-25T14:45:23 < dongs> blogging hard
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2013-06-25T14:50:33 < ABLomas> harding blog?
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2013-06-25T16:21:05 < mervaka> eeeeere
2013-06-25T16:21:09 < mervaka> ?
2013-06-25T16:21:16 < mervaka> USART interrupts.
2013-06-25T16:21:57 < mervaka> do i need to clear the RXNE flag after every time i want to use the idle interrupt?
2013-06-25T16:23:06 < zyp> what idle interrupt?
2013-06-25T16:24:20 < mervaka> USART_IT_IDLE
2013-06-25T16:25:16 < mervaka> can i leave RXNE well alone and just worry able IDLE?
2013-06-25T16:25:20 < mervaka> about*
2013-06-25T16:25:28 < gxti> you can do anything you want
2013-06-25T16:25:45 < mervaka> but will it work? :P
2013-06-25T16:25:45 < gxti> if you don't want RXNE interrupts then turn them off
2013-06-25T16:26:01 < mervaka> i'm using DMA on variable length input
2013-06-25T16:26:15 < mervaka> so i want to wait until the USART is done then swap buffers over and parse data
2013-06-25T16:26:23 < mervaka> get length
2013-06-25T16:26:24 < mervaka> etc
2013-06-25T16:35:12 < karlp> this is why I use interrupts for rx, and dma for tx.
2013-06-25T16:37:40 < dongs> retweet https://youtube.com/watch?v=yMzRi4AAvV4
2013-06-25T16:38:53 < zyp> mervaka, if you're using DMA, why not use double buffering?
2013-06-25T16:39:55 < dongs>  ret	=	ret01 && ret02 && ret03 && ret04 && ret05 && ret06 && ret07 && ret08 && ret09 && ret10 && ret11 && ret12 && ret13 && ret14;
2013-06-25T16:39:58 < dongs> lol
2013-06-25T16:40:01 < dongs> toshiba reference code
2013-06-25T16:47:06 < mervaka> zyp: trying to account for latency from a partial buffer
2013-06-25T16:47:54 < mervaka> its user generated data, so it could be left sitting partially filled for a while
2013-06-25T16:49:07 < zyp> I'd probably go fully interrupt driven in that case
2013-06-25T16:49:18 < mervaka> really?
2013-06-25T16:49:28 < zyp> (for rx, like karlp said)
2013-06-25T16:49:36 < mervaka> hmm
2013-06-25T16:49:39 < dongs> no need to waste DMA on such shit.
2013-06-25T16:49:42 < karlp> I'm only stupid some of the time.
2013-06-25T16:50:02 < karlp> well, let's rephrase, I occasionally make good choices :)
2013-06-25T16:50:12 < mervaka> it did seem like a catch 22 situation with variable, time critical data
2013-06-25T16:50:18 < mervaka> :P
2013-06-25T16:50:43 < mervaka> by time critical, i mean within human tolerances
2013-06-25T16:50:46 < mervaka> not machine
2013-06-25T16:51:14 < gxti> how long does idle take to trigger? if it's human typing odds are it would happen after every character anyway
2013-06-25T16:51:19 < gxti> in which case you might as well use interrupt
2013-06-25T16:51:32 < mervaka> as soon as an empty frame is detected
2013-06-25T16:52:13 < mervaka> can't remember where i read that. RM0008's pretty vague
2013-06-25T16:55:05 < karlp> you're trying to what, dma until you get the idle interrupt and switch?!
2013-06-25T16:55:09 < karlp> that sounds way more painful.
2013-06-25T16:55:26 < karlp> and if it's human entered anyway, irqs are going to be almost zero cpu time
2013-06-25T16:55:55 < mervaka> well, it's MIDI data
2013-06-25T16:56:24 < mervaka> so continuous controller data will generate lots of frames
2013-06-25T16:56:49 < mervaka> well, more
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2013-06-25T17:04:37 < Luggi09> dongs: some time ago you blogged about those si7005 humidity sensors, did you get a sample ?
2013-06-25T17:05:43 < dongs> i remember blogging about some sensor, pretty sure that w asnt it thouh. i think it was some IR or something sensor not that
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2013-06-25T17:08:02 < Luggi09> I'm pretty sure it was that one, never mind then
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2013-06-25T17:58:43 <+dekar> tiger hash performs incredibly well on stm32. whereas sha256 takes about 200ms for 200kb of flash, tiger only takes 37ms.
2013-06-25T18:00:47 <+Steffanx> never ever heard of it dekar :)
2013-06-25T18:01:09 <+dekar> https://en.wikipedia.org/wiki/Tiger_(cryptography)
2013-06-25T18:01:16 <+dekar> well it's cryptographic at least
2013-06-25T18:01:22 <+Steffanx> Yeah yeah, i can google :P
2013-06-25T18:01:35 <+Steffanx> Is it faster than the building encryption module too?
2013-06-25T18:01:42 <+Steffanx> *built-in
2013-06-25T18:02:02 <+dekar> that's not available on f1, is it?
2013-06-25T18:06:01 <+Steffanx> Not sure, but i dont think so
2013-06-25T18:06:51 <+Steffanx> I actually expected the 105/107 to have it, but it doesnt
2013-06-25T18:08:16 < zyp> of course it doesn't, 405/407 doesn't either
2013-06-25T18:08:35 < zyp> you have to get 415/417 to get it
2013-06-25T18:08:45 <+Steffanx> That's not "of course not"
2013-06-25T18:08:59 <+Steffanx> Nah, they do list it for "security blabla"
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2013-06-25T18:10:10 <+dekar> also I've updated TNT in case someone cares
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2013-06-25T18:10:40 <+Steffanx> Here was one who actually used TNT, but i dont remember who it was
2013-06-25T18:10:54 <+Steffanx> ( except for you )
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2013-06-25T18:38:46 < mervaka> got data coming in as expected now, using IDLE interrupts to service DMA :)
2013-06-25T18:39:00 < mervaka> now to write a parser..
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2013-06-25T22:11:57 < trepidaciousMBR> Is there any way of getting a high quality old-school silvery reflective graphic LCD at a reasonable res? I think they still use them on Japanese dictionaries and stuff
2013-06-25T22:12:11 < trepidaciousMBR> I guess e-ink would be the modern equivalent
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2013-06-25T22:41:09 < jpa-> trepidaciousMBR: eink is nice <3
2013-06-25T22:41:25 < jpa-> trepidaciousMBR: https://www.youtube.com/watch?v=1ae9lhSr8GU   800x600
2013-06-25T22:43:22 < jpa-> http://www.newhavendisplay.com/nhd320240wxcotfhvi040-no-mounting-tabs-p-613.html   320x240 is probably the best you'll find in a reflective lcd
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2013-06-26T01:49:23 < dongs> e-dink
2013-06-26T01:49:56 < dongs> have you got any better examples of the stuff other than that video I've seen more than once already?
2013-06-26T01:59:20 < qyx_> wait what
2013-06-26T01:59:39 < qyx_> jpa-: is that your eink board?
2013-06-26T01:59:43 < dongs> < jpa-> trepidaciousMBR: eink is nice <3
2013-06-26T01:59:47 < dongs> yeah it is
2013-06-26T01:59:50 < qyx_> O_o
2013-06-26T01:59:54 < dongs> hes had it for more than a amonth, that video is mega boring tho :(
2013-06-26T01:59:57 < qyx_> is it really working?
2013-06-26T01:59:59 < qyx_> me wanna
2013-06-26T02:00:01 < dongs> ya sure
2013-06-26T02:00:18 < dongs> the screen is cheap too,, i think its from one of reject amazon shits
2013-06-26T02:00:29 < qyx_> yep, around 35$
2013-06-26T02:00:37 < qyx_> i was thinking of ordering one
2013-06-26T02:00:50 < Thorn> is it lvds or parallel?
2013-06-26T02:00:55 < qyx_> but wanted to wait for jpa if he can get it working
2013-06-26T02:00:56 < dongs> neither
2013-06-26T02:01:10 < qyx_> its some pseudoparallel thing
2013-06-26T02:01:21 < Thorn> it has a controller?
2013-06-26T02:01:24 < qyx_> no
2013-06-26T02:05:51 < qyx_> hm, is it possible to charge a device using usb otg in host mode?
2013-06-26T02:06:27 < qyx_> i need to have usb device attached to a tablet and also charge it using te same connector
2013-06-26T02:08:16 < ds2> possible yes. finding a device that will do it, good luck
2013-06-26T02:09:11 < ds2> IIRC, what you need to do is start out as a device side so VBUS is setup right
2013-06-26T02:09:20 < ds2> then use HNP to become the host side
2013-06-26T02:09:35 < ds2> that should let you retain the VBUS power however, most OTG devices will only give you 100mA
2013-06-26T02:09:37 < ds2> max
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2013-06-26T02:25:17 < qyx_> ah
2013-06-26T02:25:22 < qyx_> i need the exact opposite :)
2013-06-26T02:25:48 < qyx_> the tablet needs to be charged by a usb device attached to it
2013-06-26T02:29:42 < ds2> then your tablet needs to fully support OTG
2013-06-26T02:29:54 < ds2> not just the OTG like hack of looking at the ID pin
2013-06-26T02:31:24 < Thorn> is a device ever allowed to apply voltage to its Vbus line?
2013-06-26T02:32:01 < qyx_> that's the thing i don't know
2013-06-26T02:33:09 < qyx_> but there's a way to find it out
2013-06-26T02:33:18 < qyx_> i should just try it and check the smell
2013-06-26T02:34:44 < Thorn> No device shall supply (source) current on VBUS at its upstream facing port at any time. From VBUS on its
2013-06-26T02:34:44 < Thorn> upstream facing port, a device may only draw (sink) current.
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2013-06-26T02:35:04 < Thorn> usb 2.0 spec 2.1 page 171
2013-06-26T02:35:07 < qyx_> meh
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2013-06-26T02:38:40 < Thorn> I don't see anything about sourcing current from a B-device in the otg doc
2013-06-26T02:39:19 < karlp> that's why android made the gadget api,
2013-06-26T02:39:53 < karlp> (or was that just to work in places that didn't have otg hardwere?)
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2013-06-26T02:49:08 < ds2> now read teh OTG supplement
2013-06-26T02:49:22 < ds2> the ID pin sets that codition you quoted
2013-06-26T02:49:31 < ds2> however, OTG allows you to use HNP to switch roles
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2013-06-26T04:42:23 < dongs> whats trollin
2013-06-26T04:43:03 < dongs> question of the day: can I use STM32F4 as a half+full speed USB hub between internal USB IP and its 2 USB ports?
2013-06-26T04:43:51 < ds2> eh?
2013-06-26T04:44:11 < dongs> sorry i meant "high and full-speed"
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2013-06-26T04:46:29 < ds2> still, why?
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2013-06-26T05:54:00 < ds2> anyone know how much it costs thesedays to make a LCD displays?
2013-06-26T05:54:04 < ds2> LCD display
2013-06-26T05:54:26 < ds2> like a with a bunch of 13seg digits
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2013-06-26T08:38:01 < jpa-> dongs, qyx_: http://essentialscrap.com/eink/
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2013-06-26T11:57:13 < trepidaciousMBR> jpa-: Yup I found some nice looking eink displays, not sure how to drive them :)
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2013-06-26T12:12:21 < jpa-> trepidaciousMBR: http://essentialscrap.com/eink/  for you too :)
2013-06-26T12:13:17 < trepidaciousMBR> Cool, that looks ideal :)
2013-06-26T12:13:55 < qyx_> jpa-: btw nice compilation of info
2013-06-26T12:14:03 < jpa-> i'll get around to writing about the code one day, but https://github.com/PetteriAimonen/ChibiOS-GFX/tree/master/drivers/gdisp/ED060SC4  for preview
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2013-06-26T12:16:03 < zyp> jpa-, how much current does an eink display draw?
2013-06-26T12:16:55 < zyp> I mean, is it feasible to drive it as part of a passive nfc tag?
2013-06-26T12:17:24 < jpa-> quite a lot when active, ~200mA at 3.3V
2013-06-26T12:17:38 < jpa-> most of it for the SMPS that generates the +-15V
2013-06-26T12:17:58 < jpa-> zero current at rest, of course
2013-06-26T12:18:02 < qyx_> but its only when it redraws itself, isnt it?
2013-06-26T12:18:24 < zyp> I see, that doesn't sound very feasible
2013-06-26T12:18:32 < jpa-> i think one could get by with some very low power SMPS for the +-15V, and then just use loooong row update times to compensate
2013-06-26T12:18:44 < jpa-> but would still be over 10mA definitely
2013-06-26T12:19:25 < jpa-> (the digital logic does not care if the +-15V voltage drops under load, it only affects the speed of the pixel changes)
2013-06-26T12:20:34 < jpa-> but for a passive tag, you probably don't have enough power to do even that.. or it would have to "charge" for tens of seconds
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2013-06-26T12:44:25 < dongs> anyone got some recommeneded 1% ebay resistor books under 40bux
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2013-06-26T15:29:37 < Thorn> dongs: what I have is just a bunch of pieces of tape with values scribbled on the back, held together with rubber bands. hardly a "book"
2013-06-26T15:33:17 < dongs> ya well, i'd rather give 40bucks to china for a proper one
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2013-06-26T16:19:49 <+Steffanx> Where does one even need a book for dongs?
2013-06-26T16:20:17 <+Steffanx> Is it like collecting cards and stamps?
2013-06-26T16:24:21 < jpa-> i have a bunch of strips that hang on a piece of wire tied into a loop
2013-06-26T16:24:42 < jpa-> that way they stay in proper order and are easy to search
2013-06-26T16:25:51 < trepidaciousMBR> jpa-: Thanks for the eink link, I'll have to give that a go, seems like that screen is used in a lot of ebook readers, would be great to be able to use one of those
2013-06-26T16:26:32 < jpa-> yeah, most of the primeview panels are similar (just resolution and connector varies)
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2013-06-26T17:04:55 < dongs> http://i.imgur.com/WqMew6V.png check out this fail i routed in 3 hours today
2013-06-26T17:07:19 < zyp> not sure the ground plane seperation is sane
2013-06-26T17:07:19 < Thorn> a "fuck you I have my own fab" design. could put it in like half the area
2013-06-26T17:07:23 < Thorn> what is that thing, an adc?
2013-06-26T17:07:36 < jpa-> does not look sane
2013-06-26T17:08:04 < jpa-> especially the power supplies passing the gap
2013-06-26T17:08:07 < jpa-> huuuuuge loops
2013-06-26T17:08:17 < dongs> thats why i paste shit liek that here
2013-06-26T17:08:21 < dongs> so acutal pros can review it
2013-06-26T17:08:59 < dongs> so where would you put power supplies?
2013-06-26T17:09:13 < dongs> btw, this is for test only. if shit works ill move to 4L with proper power plane.
2013-06-26T17:09:14 < jpa-> i would just use a single ground plane
2013-06-26T17:09:24 < jpa-> the layout looks sane enough otherwise
2013-06-26T17:09:37 < jpa-> plenty of distance between digital & analog side, so i wouldn't expect any trouble
2013-06-26T17:09:43 < jpa-> and linear regulators don't give much noise
2013-06-26T17:09:43 < zyp> that's probably what I would do too
2013-06-26T17:09:58 < zyp> one ground plane is probably better than a bad split
2013-06-26T17:10:16 < dongs> core is switcher, i only used linear for 2.8 cause thats what I had layin around
2013-06-26T17:11:08 < dongs> but a dude whose shit i was copying had switchers for *
2013-06-26T17:11:11 < dongs> and it wasnt too bad
2013-06-26T17:11:11 < jpa-> also, are those small orange things on 2v8 and 1v2 some inductors?
2013-06-26T17:11:22 < dongs> just ferrite bead shit
2013-06-26T17:11:30 < dongs> "120R 2.5A" or something. some chink stuff.
2013-06-26T17:11:33 < gxti> split ground is usually unnecessary and if you aren't careful probably makes things much worse
2013-06-26T17:11:47 < jpa-> i wonder if those ferrites make things better or worse
2013-06-26T17:11:58 < jpa-> may make some sense for the switcher, though not so sure about that either
2013-06-26T17:12:23 < zyp> anyone with experience with lwip? I have some workcode here that doesn't work; it uses sys_timeout() to schedule a callback to be called in the future, and it doesn't seem to be called, where should I start looking?
2013-06-26T17:12:26 < dongs> i put it at the ldo because the resistor values I had would result in 2.88V so im hoping it drops some
2013-06-26T17:12:40 < jpa-> lol :D
2013-06-26T17:13:36 < dongs> so you think i shouldnt bother with a/d split at all eh
2013-06-26T17:14:03 < jpa-> dongs: what is that weirdo wire that comes from adc chip and ends up with R & C near the big crystal?
2013-06-26T17:14:09 < gxti> zyp: can you tell if any timeouts at all work? if so probably you ran out
2013-06-26T17:14:13 < dongs> agc
2013-06-26T17:14:21 < jpa-> dongs: it is good to have them in separate areas, but do not split the ground plane
2013-06-26T17:14:44 < gxti> zyp: i.e. MEMP_NUM_SYS_TIMEOUT
2013-06-26T17:15:01 < jpa-> dongs: http://www.hottconsultants.com/techtips/split-gnd-plane.html  has some info about when and how to split gnd
2013-06-26T17:15:30 < dongs> oh
2013-06-26T17:15:31 < zyp> gxti, oh, that's quite possible
2013-06-26T17:15:34 < dongs> yeah, i failed it right there.
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2013-06-26T17:16:21 <+Steffanx> nice link jpa- .. me bookmarks
2013-06-26T17:16:30 < dongs> same
2013-06-26T17:16:39 < gxti> they have good info on stackups too
2013-06-26T17:16:50 < zyp> gxti, do you happen to know where I should point the debugger to to check how many are in use?
2013-06-26T17:17:28 < gxti> zyp: sys_timeout, first thing it does is alloc
2013-06-26T17:17:35 < zyp> increasing from 6 to 8 didn't seem to make a difference
2013-06-26T17:17:45 < gxti> you could also turn on debugging, it'll whine if it fails
2013-06-26T17:19:34 < gxti> other than that, either your tcpip thread is stuck and never gets around to processing timeouts, or your parameters are bad somehow
2013-06-26T17:20:04 < gxti> if you're using NO_SYS make sure you are calling sys_check_timeouts
2013-06-26T17:20:23 < zyp> doesn't look stuck, parameters should be good since it's the lwip-contrib sntp code
2013-06-26T17:20:57 < zyp> and I don't think we're using NO_SYS
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2013-06-26T17:51:01 < zyp> looks like the timeout queue is handled just fine, I observe contents in it changing
2013-06-26T17:51:10 < zyp> but I never get the printout from my callback func
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2013-06-26T18:57:51 < someone_r> hey guys i have now the discovery board of the STM32
2013-06-26T18:58:11 < someone_r> i want now build one my circuit on my PCB
2013-06-26T18:58:32 < someone_r> do you have any easy solution for programming the STM?
2013-06-26T18:58:40 < someone_r> do they sell any adapter?
2013-06-26T18:58:54 < someone_r> for programming the discrete version of the chip`
2013-06-26T18:58:58 < someone_r> ?
2013-06-26T19:02:09 < emeb> someone_r: The Discovery board can be used to program "discrete" versions of the chip - remove the SWD jumpers and run a cable from the header to  your own circuit.
2013-06-26T19:10:13 < kfoltman> hi guys... is 4-layer PCB required for F407 running at 168 MHz?
2013-06-26T19:10:26 < karlp> probably need at least 6.
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2013-06-26T19:12:22 < someone_r> the SWD jumpers are already removed
2013-06-26T19:12:39 < someone_r> so i need 4 wires to flash the firmware right?
2013-06-26T19:13:46 < someone_r> so i connect this 4 wires of the SWD pins to which pin? there is any documentation on that?
2013-06-26T19:13:50 < karlp> gnd, swdio, swclock is probably enough, vtarget can often be skipped, depends what software you're using.
2013-06-26T19:14:04 < karlp> you should look at the schematic of the discovery board, see how they're connected there
2013-06-26T19:14:07 < karlp> you want to do the same things.
2013-06-26T19:14:20 < karlp> kfoltman: (I was kidding btw)
2013-06-26T19:14:22 < ds2> 3 wire is sufficient
2013-06-26T19:14:27 < ds2> at least for my F103 board
2013-06-26T19:14:57 < ds2> be sure to dejumper the target on the discovery
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2013-06-26T19:17:33 < kfoltman> karlp: I can't tell by just looking at the F4discovery if it's 2-layer or 4-layer
2013-06-26T19:18:13 < zyp> 2
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2013-06-26T19:18:47 < zyp> it's pretty easy to tell if you just hold it up against the light
2013-06-26T19:18:56 < zyp> there is no internal traces
2013-06-26T19:19:12 < emeb> kfoltman: if you could get all the routing on just 1 layer that would work too.
2013-06-26T19:19:53 < emeb> but 2 is probably less hassle to route and it works fine from a signal integrity standpoint.
2013-06-26T19:20:14 < kfoltman> OK - I was worried that there may be some high frequency issues requiring a ground plane or something related
2013-06-26T19:21:00 < emeb> kfoltman: not really - if you apply good bypassing close to the chip you should be fine.
2013-06-26T19:21:13 < kfoltman> ok, thanks!
2013-06-26T19:21:46 < kfoltman> how good, some x5r 100nF caps is enough?
2013-06-26T19:22:20 < zyp> the main reason for a ground plane is maintaining signal integrity along the signal paths, it doesn't do much for the chips themselves
2013-06-26T19:22:44 < emeb> 100nf caps on each VDD, plus a 10uf nearby. There should be a good description in the datasheet & ref manual on how to do it.
2013-06-26T19:24:01 < emeb> what zyp said - gnd plane is most important if you have fast signals on the I/O pins - ethernet, spi, sdio, usb etc.
2013-06-26T19:24:35 < kfoltman> well, I might have some i2s and usb fs
2013-06-26T19:25:02 < emeb> kfoltman: in that case do try to keep good ground plane near those interfaces.
2013-06-26T19:27:38 < kfoltman> zyp: ok, that makes sense - it doesn't matter what the mcu clock frequency is (apart from clock traces), only what are the frequencies of the signals that actually go through the traces - I didn't think of it that way, but it definitely makes sense now :)
2013-06-26T19:40:26 < someone_r> last question on programming an external STM32... can i directly program the external chip using the four wires through an external ide such as iar, coocox etc or do i need to flash a bootloader before that? if so, how would I do that..
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2013-06-26T19:44:31 < dongs> sup blogs
2013-06-26T19:44:50 < dongs> someone_r: you dont n eed to flash anything. UART bootloader is on all chips, some have USB.
2013-06-26T19:45:05 < dongs> "four wires" you probably mean SWD, and sure you can do whatever with that.
2013-06-26T19:45:34 < dongs> < karlp> probably need at least 6.
2013-06-26T19:45:35 < dongs> lol
2013-06-26T19:46:24 < someone_r> Swdio swclk
2013-06-26T19:46:29 < someone_r> gnd vcc
2013-06-26T19:47:05 < someone_r> ok good thank you
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2013-06-26T19:53:47 < gxti> gnd,swdio,swclk is the bare minimum. vcc might be needed by some programming adapters for level shifting, nreset is recommended, and swo is an advanced feature you probably won't need.
2013-06-26T19:53:55 -!- scipy53 [~scipy53@unaffiliated/scipy53] has quit [Ping timeout: 264 seconds]
2013-06-26T19:54:54 < dongs> defnitely not with opensauce tools
2013-06-26T19:55:05 < dongs> i did get swo working with ulink2 and keil ide
2013-06-26T19:55:12 < gxti> bmp can do some stuff with it now
2013-06-26T19:55:30 < gxti> haven't tried it yet though
2013-06-26T19:56:14 < dongs> gxti: you had webserver going on lwip right?
2013-06-26T19:56:20 < gxti> ya
2013-06-26T19:56:25 < dongs> anything "useful"?
2013-06-26T19:56:27 < dongs> or just static pages
2013-06-26T19:56:51 < gxti> i haven't written any dynamic stuff yet but i did make a better request parser than the lwip example has
2013-06-26T19:56:54 < dongs> wondering if its worth the effort to generate some graphs and shit stm-side
2013-06-26T19:57:05 < gxti> naw, i was just going to use javascript
2013-06-26T19:57:13 < dongs> web 3.0?
2013-06-26T19:57:29 < dongs> but what if my customers are using IE6.0
2013-06-26T19:57:45 < gxti> sucks to be them
2013-06-26T19:58:14 < PaulFertser> lwip's http server provides some easy support for cgi-like functionality, i tried it. It was there since uIP btw.
2013-06-26T19:58:17 < dongs> thats ho japan rolls
2013-06-26T19:59:38 < dongs> man, MSN is dead
2013-06-26T19:59:53 < dongs> i had all tehse people on my  list and they've mostly all dropped off.
2013-06-26T20:04:53 <+Steffanx> All went to whatapp and crapp dongs ?
2013-06-26T20:04:57 <+Steffanx> *whatsapp
2013-06-26T20:05:06 <+Steffanx> or skype?
2013-06-26T20:05:43 < dongs> haha
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2013-06-26T20:10:43 < BrainDamage> skype actually can load msn accounts
2013-06-26T20:11:05 < dongs> too bad skype sucks
2013-06-26T20:11:15 < BrainDamage> yes, not commenting on skype quality :p
2013-06-26T20:12:48 < PaulFertser> otoh skype is not "open sores", so it can't be that bad!
2013-06-26T20:14:12 < dongs> the problem with it is that it doesnt log shats
2013-06-26T20:14:24 < dongs> i have msn chat history since wtc
2013-06-26T20:14:31 < dongs> and i can lookup anything i said there.
2013-06-26T20:16:29 <+Steffanx> uhm, skype definity has a nog
2013-06-26T20:16:30 <+Steffanx> log
2013-06-26T20:16:39 <+Steffanx> *ly :)
2013-06-26T20:17:40 < dongs> not in a format that you can keep for > 10 years
2013-06-26T20:17:46 < dongs> and not searchable etc.
2013-06-26T20:19:02 < BrainDamage> there are programs that decode it, but more issues, yes
2013-06-26T20:23:00 <+Steffanx> Anyway, i did not ask about your opinion.. i asked where they went to :)
2013-06-26T20:28:26 < PaulFertser> btw, has anyone tried kicadocaml yet? They say it can do push routing.
2013-06-26T20:29:04 < dongs> haha ocaml
2013-06-26T20:29:29 < dongs> i better sleep, this channel is too funny at night
2013-06-26T20:29:42 <+Steffanx> or you are too fucked up
2013-06-26T20:29:42 <+Steffanx> at night
2013-06-26T20:31:06 < trepidaciousMBR> Does anyone know what FSMC_INT2 does on an STM32F4?
2013-06-26T20:31:31 <+Steffanx> KiCad doesnt work smooth enough for me, so i also didn't try that tool PaulFertser
2013-06-26T20:32:48 < PaulFertser> Steffanx: for a standard OS user there's not much choice anyway, there's KiCAD and gEDA basically.
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2013-06-26T20:33:45 < PaulFertser> http://m8ta.com/images/812_3_thumb_20.jpg antialiasing, powered by opengl
2013-06-26T20:34:32 <+Steffanx> if kicad itself would get some proper opengl support etc. Not this wxwidgets stuff, it would probably work well for me.
2013-06-26T20:35:19 < PaulFertser> Why would kicad need opengl that much?
2013-06-26T20:36:19 < gxti> scribbling on pixel arrays is a bad way to do 2d interfaces these days
2013-06-26T20:36:20 <+Steffanx> Nah, maybe not opengl, but at least some better/fast painting
2013-06-26T20:36:40 <+Steffanx> It's too slow on os x
2013-06-26T20:37:23 <+Steffanx> It's even fast in a vm on os x, but .. it's too bad.
2013-06-26T20:37:27 <+Steffanx> *faster
2013-06-26T20:37:30 < PaulFertser> Hm, I haven't noticed any considerable drawing slowness even on my tegra2 netbook.
2013-06-26T20:38:09 <+Steffanx> From what i understand it's some wxwidgets/osx specific issue
2013-06-26T20:39:06 < PaulFertser> Is that some native quartz wxwidgets backend or on the X server?
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2013-06-26T20:40:37 <+Steffanx> I dont remember what the exact reason was
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2013-06-26T21:52:51 < emeb> attn dongs: http://www.baskosters.com/webshop/product/cock-or-your-legs-men
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2013-06-26T22:12:14 <+Steffanx> emeb, emeb.. why you too?!?!?!
2013-06-26T22:13:00 < emeb> Steffanx: because I'm not doing anything particularly interesing lately.
2013-06-26T22:13:13 < emeb> +t
2013-06-26T22:13:46 < Thorn> PINK UGLY SHORTS
2013-06-26T22:13:47 < PaulFertser> dongs has created a strong association between random dicks-related images and himself, so no wonder ;)
2013-06-26T22:14:45 <+Steffanx> The worst thing is the 'designer' is dutch
2013-06-26T22:31:02 < Thorn> The source couples optical power into all the conducting modes of the fiber.  <-- can you actually say "couples into" in English?
2013-06-26T22:33:53 < emeb> Yes - that makes sense.
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2013-06-26T22:35:41 < emeb> the verb form of "couple" which is synonymous with connect, join, link, mate, etc.
2013-06-26T22:35:54 <+Steffanx> Hmm, but you as american have to reputation to accept 'everything' when it comes to english emeb :)
2013-06-26T22:36:31 < emeb> Steffanx: yes - native english speakers, esp americans are not extremely fussy about language.
2013-06-26T22:38:18 < Thorn> you can say that two inductors are inductively coupled. what does an inductor couple into what then?
2013-06-26T22:38:43 < emeb> the other inductor.
2013-06-26T22:41:02 < emeb> in this sense couple is a verb that acts on three things - a source, a destination and something that is sent from one to the other.
2013-06-26T22:41:21 < emeb> so, optical source, optical fiber and optical power
2013-06-26T22:41:41 < emeb> or one inductor, the other inductor and magnetic field
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2013-06-26T22:44:50 < Thorn> I would inderstand, by analogy, "an inductor couples magnetic field into a magnetic conductor" or something like that
2013-06-26T22:47:20 < emeb> that interpretation puts too strict a limit on what constitutes the destination
2013-06-26T22:49:48 < BrainDamage> there's actually a circuit analogy for magnetics
2013-06-26T22:49:53 < BrainDamage> using magnetic reluctance
2013-06-26T22:49:57 < BrainDamage> magnetomotive force
2013-06-26T22:50:05 < BrainDamage> and a few other insanities
2013-06-26T22:50:20 < emeb> emag is just a few steps away from magic.
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2013-06-26T22:50:40 < Thorn> http://amasci.com/elect/mcoils.html
2013-06-26T22:50:56  * emeb is still amazed by how YIG resonators work
2013-06-26T22:52:39 < BrainDamage> Thorn: remember that everything is a "magnetic conductor"
2013-06-26T22:52:42 < BrainDamage> even vacuum
2013-06-26T22:53:26 < BrainDamage> high mu materials bend the magnetic flux lines and let you somehow shape their path
2013-06-26T22:54:04 <+Steffanx> Ha, at least BrainDamage is always there with his correct answers/stories :)
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2013-06-27T02:41:37 < dongs> what the fuck
2013-06-27T02:42:34 < dongs> http://i.imgur.com/gsSCe5t.png
2013-06-27T02:44:15 <+Steffanx> 500mA + 500mA = 1A ? :)
2013-06-27T02:44:15 <+Steffanx> or ?
2013-06-27T02:44:28 < emeb> Yes, if it's DC. :)
2013-06-27T02:45:23 <+Steffanx> Im going to quote someone:
2013-06-27T02:45:24 <+Steffanx> <dongs> i better sleep, this channel is too funny at night
2013-06-27T02:46:20 < emeb> esp like how the two USB footprints are different.
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2013-06-27T02:51:34 < dongs> yeah i have no idea wtf is going on
2013-06-27T02:51:41 < dongs> the rest of the board is a similar disaster
2013-06-27T02:52:29 < dongs> http://i.imgur.com/nBefhPb.png heres a bit further into it
2013-06-27T02:52:58 <+Steffanx> but its no EAGLE
2013-06-27T02:53:04 < dongs> ya not eagle for sure
2013-06-27T02:53:07 < dongs> probablyt some obscure jap trash
2013-06-27T02:53:28 < dongs> WHAT!
2013-06-27T02:53:31 < dongs> it IS eagle lool
2013-06-27T02:53:37 < dongs> Generated by EAGLE CAM Processor 6.4.0
2013-06-27T02:53:57 <+Steffanx> oh, it is :D
2013-06-27T02:54:08 < emeb> bleh.
2013-06-27T02:54:20 <+Steffanx> You're welcome for the notice
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2013-06-27T06:46:13 < upgrdman> been wondering why my gyro readings result in a drift of ~1 degree every second or two. just configured the accelerometer... my motors have been causing +/- 2 G's on the damn PCB. lol... time to play with PCB mounting and damping.
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2013-06-27T07:18:38 < R2COM> it has to be recalibrated from time to time
2013-06-27T07:18:48 < R2COM> they even tell that somewhere in the app notes
2013-06-27T07:28:47 < upgrdman> but doesn't that require no motion during recalib?
2013-06-27T07:32:46 < R2COM> I guess
2013-06-27T07:32:52 < R2COM> check its app note
2013-06-27T07:43:20 < upgrdman> k
2013-06-27T07:45:19 < upgrdman> only app note for stm l3gd20 is an android abstraction layer :/
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2013-06-27T08:35:47 < R2COM> look for similar app notes
2013-06-27T08:35:51 < R2COM> http://www.parallax.com/portals/0/downloads/docs/prod/sens/27911-GyroscopeAppNote2.pdf
2013-06-27T08:36:22 < R2COM> http://www.parallax.com/portals/0/downloads/docs/prod/sens/27911-gyroscopeappnote1.pdf
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2013-06-27T09:28:20 < R2COM> I dont see embedded trolling
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2013-06-27T09:41:15 < baird> It must be Sunday afternoon in Trolltown.
2013-06-27T09:50:47 < dongs> yeah
2013-06-27T09:51:05 < dongs> R2COM: did y ou see my utterly fail analog/digital layout
2013-06-27T09:51:20 < dongs> its so full of fail, i hope it wokrs
2013-06-27T09:51:21 < dongs> < dongs> http://i.imgur.com/WqMew6V.png check out this fail i routed in 3 hours today
2013-06-27T09:53:18 < emeb_mac> imgur fail
2013-06-27T09:53:29 < dongs> wat? works here
2013-06-27T09:53:48 < emeb_mac> "The website you are trying to access is currently unavailable. Please try again at a later time."
2013-06-27T09:53:53 < dongs> fucking garbage
2013-06-27T09:53:58 < dongs> its R2COM fault
2013-06-27T09:54:04 < dongs> he kept using it
2013-06-27T09:54:08 < dongs> and its down for all of america
2013-06-27T09:54:13 < R2COM> no
2013-06-27T09:54:15 < R2COM> it works for me now
2013-06-27T09:54:40 < R2COM> haha
2013-06-27T09:54:45 < emeb_mac> I still blame R2COM . ;)
2013-06-27T09:54:54 < dongs> R2COM: laugh away
2013-06-27T09:55:01 < dongs> throwaway prototype just to see if it works
2013-06-27T09:55:17 < R2COM> no I am just looking at other stuff
2013-06-27T09:55:20 < dongs> ah
2013-06-27T09:55:28 < R2COM> at left part
2013-06-27T09:56:13 < R2COM> is that part a TI transmitter?
2013-06-27T09:56:38 < R2COM> transceiver..
2013-06-27T09:56:53 < dongs> no
2013-06-27T09:56:55 < dongs> this is receiver only
2013-06-27T10:00:41 < R2COM> I do it roughly like that: http://imagebin.org/index.php?mode=image&id=262617
2013-06-27T10:02:08 < R2COM> wider traces to separate domains, in case if I want to even use or solder in the caps
2013-06-27T10:02:27 < R2COM> and firm via fence around
2013-06-27T10:02:53 < R2COM> on that board you showed I dont see firm separation
2013-06-27T10:03:51 < R2COM> board I shown has chip, for which analog devices made its board too http://www.analog.com/static/imported-files/images/verified_circuits/CN0311_hw_1024.jpg
2013-06-27T10:04:10 < dongs> lol efx2
2013-06-27T10:04:11 < R2COM> its just mine doesnt have USB, but much smaller and sexier ;)
2013-06-27T10:05:03 < R2COM> but you can notice they also separated it firmly, although in a kinda ugly way...
2013-06-27T10:05:31 < dongs> i did sepaerate grounds
2013-06-27T10:05:36 < dongs> theres one 0603 connecting them
2013-06-27T10:05:45 < dongs> but there are many other isues
2013-06-27T10:05:57 < dongs> like power traces crossing the pours in a bunch of places and shit
2013-06-27T10:06:12 < dongs> just a quick test on 2L, if shit powers up and wors ill move it to 0402 and 4L
2013-06-27T10:06:25 < R2COM> 2 layer?
2013-06-27T10:06:28 < R2COM> oh..
2013-06-27T10:06:36 < dongs> ya now is 2l
2013-06-27T10:06:41 < R2COM> I dont prototype such stuff on 2l
2013-06-27T10:07:12 < dongs> i dont work for the military so my 4L prototypes while cheap arent free
2013-06-27T10:07:20 < dongs> but 2L is usually free
2013-06-27T10:07:21 < dongs> so.
2013-06-27T10:07:23 < Simon--> perhaps it should say "arduino radio shield"
2013-06-27T10:08:08 < R2COM> I guess its ok to prototype on 2l, as far as you manage to keep one bottom for just ground and nothing else
2013-06-27T10:08:17 < dongs> thats what it ended up
2013-06-27T10:08:34 < R2COM> but there one problem I guess here
2013-06-27T10:08:45 < R2COM> whtas impedance of that SMA connector supposed to be...50Ohm right?
2013-06-27T10:08:50 < dongs> thats F
2013-06-27T10:08:52 < dongs> 75R
2013-06-27T10:08:59 < R2COM> ah
2013-06-27T10:09:52 < R2COM> 62 mil?
2013-06-27T10:09:55 < R2COM> heights?
2013-06-27T10:10:06 < dongs> heights? you mean fr4 thicknes?
2013-06-27T10:10:09 < dongs> standard 1.6mm shit
2013-06-27T10:10:11 < R2COM> err yea
2013-06-27T10:10:14 < R2COM> so 62mil
2013-06-27T10:10:25 < dongs> i dont get to choose when its free.
2013-06-27T10:10:25 < R2COM> for 75 Ohm... hmmm isnt that trace supposed to be around 50 mils?
2013-06-27T10:10:30 < R2COM> it kinda looks too thin to me;)
2013-06-27T10:10:51 < dongs> 6mil
2013-06-27T10:10:55 < dongs> too thin, yeah
2013-06-27T10:10:58 < dongs> it was 5mil for 4L
2013-06-27T10:11:03 < dongs> oops.
2013-06-27T10:11:10 < dongs> ground too far
2013-06-27T10:11:10 < dongs> oh well.
2013-06-27T10:11:12 < R2COM> yeah...so you got around 250 mil of huge mimatch already
2013-06-27T10:12:00 < R2COM> but well.. it still might work
2013-06-27T10:13:52 < R2COM> ugly crystal :P
2013-06-27T10:14:00 < dongs> might not need it
2013-06-27T10:14:05 < dongs> i added some 0R for clock sharing
2013-06-27T10:14:48 < R2COM> http://imagebin.org/index.php?mode=image&id=262618
2013-06-27T10:15:33 < dongs> more pink connectors
2013-06-27T10:15:40 < dongs> 4L?
2013-06-27T10:15:44 < R2COM> yes
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2013-06-27T10:16:57 < R2COM> http://imagebin.org/index.php?mode=image&id=262619
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2013-06-27T10:19:04 < R2COM> 45mm x 45mm
2013-06-27T10:19:09 < dongs> is that 4mil traces
2013-06-27T10:19:13 < R2COM> 5 mil
2013-06-27T10:19:15 < dongs> or 5 maybe
2013-06-27T10:19:16 < dongs> yeah
2013-06-27T10:19:28 < dongs> i can do 4/4 but no need to push for protos
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2013-06-27T10:27:23 < emeb_mac> dongs: imgur finally back. board looks fun.
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2013-06-27T10:29:49 < dongs> heh
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2013-06-27T10:30:58 < dongs> dammit tho r2com found the real fail
2013-06-27T10:31:02 < dongs> w/antenna trace  width
2013-06-27T10:31:06 < dongs> but ok, it'll at least receive something
2013-06-27T10:31:20 < dongs> i totalyl forgot that i'd have to make it thicker on 2l
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2013-06-27T12:55:16 < dongs> hm, on F3, you can run code from ram right?
2013-06-27T12:55:18 < dongs> execute
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2013-06-27T13:18:40 < zyp> sure
2013-06-27T13:18:42 < zyp> both ram and ccm
2013-06-27T13:32:47 < dongs> oh, fucking cocks, i meant M3
2013-06-27T13:32:55 < dongs> but anyway, seems at least SRAM is ok right?
2013-06-27T13:32:59 < dongs> since flash routines run from there
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2013-06-27T14:14:08 < zyp> yes
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2013-06-27T14:19:31 < dongs> wondering if i can build some stuff as readonly-position-independent, store it in external flash, then copy to ram and run
2013-06-27T14:19:44 < dongs> be fun to try anyway.
2013-06-27T14:20:08 < zyp> probably, except you would probably have to handle relocation
2013-06-27T14:20:17 < dongs> thats teh point of ropi
2013-06-27T14:20:22 < dongs> it doesnt need to be relocated.
2013-06-27T14:20:25 < dongs> its all relative
2013-06-27T14:20:44 < dongs> at least armcc has this opton, i used it when writing shit for BREW like 10 years ago
2013-06-27T14:21:17 < dongs> http://infocenter.arm.com/help/topic/com.arm.doc.dui0493c/CHDEIIDI.html
2013-06-27T14:21:50 < zyp> sure, and gcc has -fpic
2013-06-27T14:22:01 < dongs> o, rite. sounds familiar
2013-06-27T14:22:43 < zyp> well, I haven't used it, but I thought you might have to deal with relocation
2013-06-27T14:23:35 < dongs> in brew, entire module was built like that
2013-06-27T14:23:43 < dongs> since runtime could load it anywhere
2013-06-27T14:23:50 < dongs> which also meant a bunch of shitty restrictions on code
2013-06-27T14:24:01 < karlp> what's brew?
2013-06-27T14:24:03 < dongs> haha
2013-06-27T14:24:08 < dongs> qualcomm's mobile trash
2013-06-27T14:24:11 < dongs> C-based
2013-06-27T14:24:15 < dongs> mega old + dead
2013-06-27T14:25:03 < dongs> http://en.wikipedia.org/wiki/Binary_Runtime_Environment_for_Wireless
2013-06-27T14:25:14 < dongs> haha, wikipedo still says 'is'
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2013-06-27T14:26:15 < qyx_> it shouldn't have to be relocated in that case
2013-06-27T14:26:31 < qyx_> i was trying to do the same, got nowhere
2013-06-27T14:26:56 < dongs> define "nowhere"
2013-06-27T14:26:58 < dongs> what d idnt work?
2013-06-27T14:27:03 < qyx_> was lazy
2013-06-27T14:27:22 < zyp> but do you really have to be able to run the same code from both flash and ram?
2013-06-27T14:27:36 < dongs> by flash i meant external flash
2013-06-27T14:27:37 < qyx_> also you need to resolve symbols from rtos somehow
2013-06-27T14:27:47 < zyp> dongs, and?
2013-06-27T14:27:48 < qyx_> or any other thing which makes environment from your code
2013-06-27T14:27:52 < dongs> no just saying
2013-06-27T14:27:59 < qyx_> *for
2013-06-27T14:28:04 < dongs> qyx_: yeah. i forgoet how that shit was in brew
2013-06-27T14:28:08 < dongs> i think your app was passed the "os" pointer
2013-06-27T14:28:09 < zyp> can't you just have a stub that executes from flash first, then use that to load the rest of the code into ram?
2013-06-27T14:28:17 < dongs> which had links to all the  system calls and bla bla
2013-06-27T14:28:20 < zyp> then the code that goes into ram is linked to always run from ram
2013-06-27T14:28:35 < qyx_> yep, or standard syscall way by doing soft interrupt
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2013-06-27T14:29:14 < zyp> I did something like that when I were dicking around with x86 years ago
2013-06-27T14:29:38 < zyp> a stub that ran at a physical memory addr to enable paging, and then the rest of the code ran in virtual memory after paging were enabled
2013-06-27T14:30:25 < zyp> handling it would be the same as handling the .data segment
2013-06-27T14:30:35 < zyp> it's stored in flash then copied to ram at the start of execution
2013-06-27T14:31:03 < dongs> ya i dont mean fully running shit off external storage/flash
2013-06-27T14:31:10 < dongs> just to complement existing code in internal flash
2013-06-27T14:31:18 < dongs> sorta like loadable modules or someshit.
2013-06-27T14:31:46 < zyp> ah, right
2013-06-27T14:32:33 < zyp> then you want them relocatable, since you don't know in advance where you want to put them
2013-06-27T14:32:50 < dongs> right, but by building them position-indepenedenet that should be a nonissue
2013-06-27T14:33:17 < dongs> i might have to grab brew sdk and see how they did it
2013-06-27T14:33:18 < zyp> relative addressing only works within a segment
2013-06-27T14:33:26 < dongs> on arm?
2013-06-27T14:33:27 < dongs> segments?
2013-06-27T14:33:37 < zyp> code/data/etc
2013-06-27T14:33:57 < dongs> sure, isnt this all 'code" then once its in ram?
2013-06-27T14:34:08 < zyp> data is variables and shit
2013-06-27T14:34:19 < zyp> code is instructions
2013-06-27T14:34:24 < dongs> oh, right.
2013-06-27T14:34:25 < dongs> hm
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2013-06-27T15:00:12 < dongs> naturally first thing I made in brew was an irc client http://pbx.mine.nu/huhuirc/huhuirc.jpg
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2013-06-27T15:21:50 < dongs> crap wehjre is my ulinkME
2013-06-27T15:21:59 < dongs> i dont wanna bring whole huge ulink to tokyo tomorw
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2013-06-27T15:29:36 < dongs> fond
2013-06-27T15:29:37 < dongs> found
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2013-06-27T16:30:23 <+Steffanx> Not sure if you must be pround of that irc client dongs
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2013-06-27T18:24:03 < Thorn> does an optocoupler protect from transients?
2013-06-27T18:25:23 < Claude> depends , optocouplers have some pF parasitic capacity over the isolation barrier. so if the transient is high enough....
2013-06-27T18:26:32 < emeb> that'd be a big transient
2013-06-27T18:26:33 < Thorn> I'd also guess the primary side can be fried by the transient
2013-06-27T18:26:52 < emeb> Thorn: define what you mean by transient.
2013-06-27T18:31:27 < Thorn> any impulse coupled onto a signal circuit, mostly from switching power circuits and lightning. up to a few kV peak
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2013-06-27T20:05:41 < rlc> what's the purpose of those resistors on the USB bus connecting D+ host to D+ device and D- host to D- device?
2013-06-27T20:07:31 < zyp> termination
2013-06-27T20:07:31 < PaulFertser> rlc: series?
2013-06-27T20:08:04 < PaulFertser> Yes, for high-speed (480) bus termination is needed. Some usb phys have them integrated.
2013-06-27T20:08:29 < zyp> termination is not restricted to high-speed
2013-06-27T20:08:35 < zyp> it's the same for full speed
2013-06-27T20:11:26 < rlc> yes in series
2013-06-27T20:11:40 < rlc> the values are less than 50 ohms
2013-06-27T20:11:49 < rlc> never seen higher
2013-06-27T20:12:13 < zyp> that's correct, they are supposed to be 22 ohm each
2013-06-27T20:12:19 < rlc> ah
2013-06-27T20:12:37 < rlc> are they necessary for FS on the stm32f4?
2013-06-27T20:12:45 < PaulFertser> zyp: but for full speed it doesn't matter afaict.
2013-06-27T20:13:01 < Thorn> f4 has them built in
2013-06-27T20:13:08 < zyp> PaulFertser, of course it does
2013-06-27T20:13:53 < rlc> Thorn: really? why are there still external resistors on the discovery board if they are built in?
2013-06-27T20:14:10 < PaulFertser> zyp: seems to work without them for me...
2013-06-27T20:14:29 <+Steffanx> work vs work-reliable ..
2013-06-27T20:14:29 <+Steffanx> ?
2013-06-27T20:14:53 < rlc> I'm not getting my USB to work yet, so maybe those missing resistors are the problem?
2013-06-27T20:14:56 < zyp> «working» doesn't imply «within spec»
2013-06-27T20:15:02 < PaulFertser> agreed
2013-06-27T20:16:36 < rlc> any idea why my USB isn't working?
2013-06-27T20:19:50 < Thorn> f4 datasheets have usb interface circuits, none have external termination resistors
2013-06-27T20:20:47 < gxti> there's more than one usb peripheral on f4
2013-06-27T20:21:00 < zyp> gxti, both internal PHYs are the same
2013-06-27T20:21:04 < gxti> k
2013-06-27T20:21:24 < gxti> i must have been thinking of the pullup, not termination resistors
2013-06-27T20:21:42 < Thorn> but I don't see any specific mention of builtin termination anywhere
2013-06-27T20:21:55 < zyp> me neither, I'm looking for it
2013-06-27T20:22:02 < gxti> they're not functionally required, it's probably a EMC thing
2013-06-27T20:22:21 < Thorn> pullups *are* builtin (connect Vbus correctly)
2013-06-27T20:22:45 < Thorn> as are pulldowns for the host mode
2013-06-27T20:22:55 < zyp> yes, pullups are fine
2013-06-27T20:23:01 < gxti> on f4 anyway
2013-06-27T20:24:31 < zyp> the f4 discovery board has 22ohm in series
2013-06-27T20:24:50 < zyp> and both the board I made myself and the waveshare devboard I have here also have them
2013-06-27T20:25:08 < Thorn> except on the lqfp100 package HS_VBUS is the same pin as r/mii TXD1
2013-06-27T20:26:11 < rlc> should I connect vbuc directly to +5V?
2013-06-27T20:26:15 < rlc> vbus
2013-06-27T20:26:23 < zyp> sure
2013-06-27T20:26:42 < Thorn> only if your device is bus-powered
2013-06-27T20:27:27 < rlc> I'm using it in host mode
2013-06-27T20:28:01 < zyp> without a power switch?
2013-06-27T20:28:11 < Thorn> the spec requires overcurrent protection, if you're fine with breaking that rule and your 5V is never >6V then go ahead
2013-06-27T20:28:57 < Thorn> I've seen boards where host Vbus is directly connected to a 3.5mm power jack. 9V wall wart -> funtimes
2013-06-27T20:29:25 < rlc> yeah, without power switch. I'm supplying my device directly 5V from regulator
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2013-06-27T20:37:54 < rlc> what would be the most simple way to test if the USB bus is working?
2013-06-27T20:39:31 < emeb> which part are you using?
2013-06-27T20:39:39 < Thorn> connect a usb analzyer at the other end, send some packets
2013-06-27T20:39:41 < emeb> I usually just try USB boot mode
2013-06-27T20:39:56 < emeb> (on parts that have it)
2013-06-27T20:40:29 < rlc> stm32f407vgt6 same as discovery board
2013-06-27T20:40:50 < emeb> then you have boot mode available. Just plug into a PC and see if it's recognized.
2013-06-27T20:41:03 < emeb> (while pulling up BOOT0)
2013-06-27T20:41:19 < rlc> ok
2013-06-27T20:45:02 < rlc> would that work for both USB modules? or just the FS module?
2013-06-27T20:47:51 < zyp> FS only
2013-06-27T20:49:10 < rlc> ok thanks
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2013-06-27T22:16:07 < rlc> when the BOOT0 pin is left floating, what would the chip boot into?
2013-06-27T22:16:41 < jpa-> random
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2013-06-27T22:16:55 < emeb> don't think BOOT0 has a pullup/pulldown, so it depends on the charge on the pin at boot time.
2013-06-27T22:16:57 < qyx_> hm, for me it always boot from flash
2013-06-27T22:17:50 < jpa-> i once had bad solder connection on BOOT0.. caused funny effects
2013-06-27T22:18:04 < jpa-> programs fine, then it doesn't work after reset.. then it works again
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2013-06-27T22:21:30 < timemob> Boot modes appnote
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2013-06-27T22:27:18 <+Steffanx> You quieted Laurenceb, timemob ?
2013-06-27T22:27:29 <+Steffanx> He didn't say anything for ages
2013-06-27T22:27:50 < timemob> Lol
2013-06-27T22:28:20 < timemob> Maybe he got arrested for cp
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2013-06-27T22:28:35 <+Steffanx> And what brings you here btw.. at this early hour?
2013-06-27T22:29:48 < Thorn> I just heard the phrase "Burr-Brown ADCs" in a hollywood movie.
2013-06-27T22:30:11 < timemob> Driving to airport
2013-06-27T22:30:16 < Thorn> or rather DACs
2013-06-27T22:30:33 <+Steffanx> Driving and irc .. good combination
2013-06-27T22:30:35 < timemob> Ror
2013-06-27T22:31:15 <+Steffanx> Dongs got a driver?
2013-06-27T22:31:52 <+Steffanx> Nah, i think you would prefer a helicopter + private jet
2013-06-27T22:32:46 < timemob> Agreed
2013-06-27T22:32:47 < timemob> Thorn then it's not nearly as funny
2013-06-27T22:32:47 < timemob> No I'm driving
2013-06-27T22:34:00 <+Steffanx> Using Microsoft Sam?
2013-06-27T22:34:07 < timemob> I was gonna PayPal a heli until I looked at all the paperwork I'd need to own it
2013-06-27T22:34:38 < timemob> Wut
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2013-06-27T22:37:58 < timemob> http://www.imgur.com/6mGrmqt.jpeg
2013-06-27T22:38:43 <+Steffanx> Really, danger on the road
2013-06-27T22:38:54 <+Steffanx> Soon we'll see Russia-a-like stuff
2013-06-27T22:39:32 < zyp> heh
2013-06-27T22:40:00 < zyp> a pal of mine is visiting the area, maybe I'll have to warn him :p
2013-06-27T22:40:27 < timemob> The road is fucking empty
2013-06-27T22:40:47 <+Steffanx> What is that red blurry light in front of you?
2013-06-27T22:40:57 <+Steffanx> Another honda?
2013-06-27T22:41:00 < Thorn> 155 km/h?
2013-06-27T22:41:11 < timemob> Is there some anniemay convention
2013-06-27T22:41:39 <+Steffanx> No need too. Jappyland is into that EVERYDAY
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2013-06-27T22:42:15 < zyp> nah, he's dicking around in rural areas
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2013-06-27T22:43:23 < emeb> driving 155kph @ 4:45am and chatting on IRC. Yah baybee.
2013-06-27T22:43:24 <+Steffanx> Get me a ticket to your funeral timemob
2013-06-27T22:43:50 < zyp> last I heard from him he were sitting on the train to kumamoto
2013-06-27T22:44:14 < timemob> Oh
2013-06-27T22:44:23 < timemob> I'm just leaving there
2013-06-27T22:44:46 < zyp> that's what I assumed, which is why I joked about warning him :p
2013-06-27T22:44:48 < ds2> 155kph isn't that fast
2013-06-27T22:45:12 < timemob> Getting aids in Tokyo/Osaka
2013-06-27T22:45:12 < timemob> And radiation
2013-06-27T22:45:34 < ds2> 155mph and now you are talking
2013-06-27T22:45:36 < emeb> Uh 96mph. That's fast in my book
2013-06-27T22:45:47 < ds2> race car drivers go faster then that
2013-06-27T22:46:09 < ds2> I been pasted faster on I5 then that
2013-06-27T22:46:10 <+Steffanx> does it work like this timemob ? http://www.laptophouders.nl/album/slides/expressdesk.jpg :)
2013-06-27T22:46:14 < Thorn> and astronauts
2013-06-27T22:46:23 < timemob> No one in Japan drives above 80
2013-06-27T22:46:32 <+Steffanx> 80 what? mph?
2013-06-27T22:46:51 < ds2> doesn't help that I saw FF: Tokyo drivft last weekend ;)
2013-06-27T22:47:14 < timemob> Km
2013-06-27T22:48:18 < timemob> That's the speed limit on highway
2013-06-27T22:48:18 < timemob> Fucking snore
2013-06-27T22:48:30 < emeb> that's pretty slow
2013-06-27T22:48:38 < zyp> isn't it 100?
2013-06-27T22:49:17 < emeb> I usually go 120-130kph on the freeways
2013-06-27T22:49:49 < zyp> same
2013-06-27T22:51:00 <+Steffanx> I go like 40 max ..
2013-06-27T22:51:03 < Tectu> http://abload.de/img/2013-06-27-234548_144ffafa.png
2013-06-27T22:51:07 < zyp> I tend to stay below the limit where you lose your licence if you're caught
2013-06-27T22:51:26 < zyp> which is 140 if the limit is 100
2013-06-27T22:51:32 <+Steffanx> lol
2013-06-27T22:51:59 -!- daku is now known as DaKu
2013-06-27T22:52:31 <+Steffanx> You get lots of speeding tickets?
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2013-06-27T22:52:48 < zyp> no, never
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2013-06-27T22:53:40 < emeb> crashed
2013-06-27T22:55:37 < timemob> Trash network
2013-06-27T22:56:16 < emeb> What was the deal I read about - tickets in Finland are scaled by your income. CEO of Nokia caught a ticket and ended up paying > $1M?
2013-06-27T22:56:54 < timemob> Lol
2013-06-27T22:57:30 < timemob> That'd be awesome
2013-06-27T23:01:12 < timemob>  Facebook director of engineering Venkat Venkataramani,
2013-06-27T23:01:14 <+Steffanx> Sounds like an old story emeb
2013-06-27T23:01:27 < timemob> Lol@name
2013-06-27T23:02:03 <+Steffanx> I bet i would say the same about yours
2013-06-27T23:05:37 -!- Viper168 [~Viper@unaffiliated/viper168] has quit [Ping timeout: 276 seconds]
2013-06-27T23:07:04 < timemob> Pfft
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2013-06-27T23:12:58 < zyp> timemob, sounds like a typical indian name
2013-06-27T23:13:03 <+Steffanx> What? Not true?
2013-06-27T23:13:42 < zyp> I have a couple of coworkers with similar names
2013-06-27T23:15:46 <+Steffanx> similar indian names?
2013-06-27T23:18:39 -!- timemob [~dongs@g1-27-253-251-108.bmobile.ne.jp] has quit [Ping timeout: 256 seconds]
2013-06-27T23:18:41 <+Steffanx> Ha best thing he ever said: <timemob> if you are a programmer and dont like cpp thats just cuz you arent skilled
2013-06-27T23:18:51 <+Steffanx> Isnt dongs not-into-c++ nowadays?
2013-06-27T23:19:07 -!- timemob [~dongs@g1-27-253-251-108.bmobile.ne.jp] has joined ##stm32
2013-06-27T23:19:55 < timemob> Hm apparently my fail rf board might be done tomorrow
2013-06-27T23:20:43 <+Steffanx> wonderful
2013-06-27T23:21:01 < Thorn> >or even an ARM Cortex-M4 or M8 instead of your PIC.
2013-06-27T23:21:04 < Thorn> WAT
2013-06-27T23:21:32 < timemob> Or I guess that's today
2013-06-27T23:21:40 <+Steffanx> You must be typing on your phone.. every sentence starts actually with a capital. You never do that.
2013-06-27T23:21:47 < timemob> Wat
2013-06-27T23:21:48 < timemob> M8
2013-06-27T23:21:48 < timemob> Ausfags
2013-06-27T23:21:51 < ABLomas> fail rf board?
2013-06-27T23:22:08 < timemob> ya
2013-06-27T23:22:26 < timemob> Work shit
2013-06-27T23:22:48 < timemob> You know stuff that makes non PayPal money
2013-06-27T23:23:23 <+Steffanx> http://i.imgur.com/WqMew6V.png that one?
2013-06-27T23:23:41 <+Steffanx> Perhaps with one gnd plane
2013-06-27T23:23:44 < timemob> Ya
2013-06-27T23:24:48 < ABLomas> no, stuff that makes non-paypal money? Never heard about...
2013-06-27T23:25:09 < timemob> Lols
2013-06-27T23:25:18 <+Steffanx> Everything makes paypal money on ebay ( china clones )
2013-06-27T23:25:39 < timemob> I might merge the planes ya
2013-06-27T23:25:45 < timemob> But I will redo that on 4l anyway
2013-06-27T23:26:02 < timemob> After it works
2013-06-27T23:26:03 <+Steffanx> Unless timemob has an entire search and take-down team
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2013-06-27T23:30:51 < timemob> http://www.imgur.com/xgoEKYR.jpeg
2013-06-27T23:31:28 < timemob> Getting brighter
2013-06-27T23:31:38 < zyp> nice plane
2013-06-27T23:32:04 < zyp> fancy ETC antenna or something?
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2013-06-27T23:46:11 < Thorn> >I have an idea for a project, but first I need to knwo if an on-metal RFID tag can withstand the pressure 3km under the ocean.
2013-06-27T23:46:46 < Rickta59> sounds like a question for james cameron
2013-06-27T23:47:00 < timemob> Gonna RFID fish?
2013-06-27T23:52:49 < Thorn> "Sawn wafer on UV tape" <- nice IC package
2013-06-27T23:54:06 < upgrdman> lol
2013-06-27T23:54:21 < timemob> I heard you like bonding
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--- Day changed Fri Jun 28 2013
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2013-06-28T00:11:15 < timemob> Airport parking is really fucked
2013-06-28T00:11:21 < timemob> 2400/24hr
2013-06-28T00:11:33 < timemob> What a fucking rape
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2013-06-28T00:48:59 < qyx_> timemob: where do you connect analog and digital groundplanes?
2013-06-28T00:49:29 < timemob> Around middle bottom
2013-06-28T00:49:50 < timemob> There's a bead
2013-06-28T00:50:02 < qyx_> ah its bead
2013-06-28T00:50:05 < timemob> Near flag1
2013-06-28T00:50:07 < qyx_> though it was a cap
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2013-06-28T00:50:41 < timemob> Bead or r depends what I figure out
2013-06-28T00:51:19 < qyx_> what does that device do actually?
2013-06-28T00:53:05 < timemob> Receiver
2013-06-28T00:53:06 < timemob> Vhf/uhf
2013-06-28T01:01:50 < qyx_> sdr or some dedicated chip?
2013-06-28T01:03:13 < timemob> Nah just dtv stuff
2013-06-28T01:03:32 < timemob> Boring
2013-06-28T01:03:32 < timemob> JP TV
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2013-06-28T01:16:06 < upgrdman> whats the point of separate ground planes?
2013-06-28T01:16:22 < upgrdman> and does the cap or bead just "slowly" equalize the voltages between the planes?
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2013-06-28T03:01:16 < timemob> Sup
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2013-06-28T03:06:13 < emeb> bloggin'
2013-06-28T03:08:02 <+Steffanx> Actually only two lines have been written since you left mr timemob
2013-06-28T03:08:39 <+Steffanx> We were all waiting for you to come bac
2013-06-28T03:08:39 <+Steffanx> k
2013-06-28T03:08:41 < timemob> No surprise
2013-06-28T03:09:34 <+Steffanx> Are you "up" yet? :)
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2013-06-28T03:22:31 < englishman> what's everyone's favourite 1/2A+ switching regulator?
2013-06-28T03:23:32 < ds2> up down both?
2013-06-28T03:23:35 < englishman> down
2013-06-28T03:23:59 < ds2> donno, had not needed down much
2013-06-28T03:26:19 < qyx_> l5973d
2013-06-28T03:26:33 < timemob> Too many unknowns
2013-06-28T03:28:38 < qyx_> timemob: whats that sot23 switcher you used for 1.2V?
2013-06-28T03:29:55 < timemob> Some ncp5xxx part, don't have the number here. It's pin/function compatible with rt8009
2013-06-28T03:30:15 < timemob> Vref 0.6v
2013-06-28T03:31:07 < timemob> I'll be in the office soon I'll retweet it
2013-06-28T03:31:17 < timemob> It's a nice cheap part
2013-06-28T03:31:20 < qyx_> ok
2013-06-28T03:33:47 < timemob> Found
2013-06-28T03:33:47 < timemob> NCP1521BSNT1GON
2013-06-28T03:34:17 < qyx_> oh, thx
2013-06-28T03:34:30 < timemob> Though if you just need 1.2v sc189 is probably easier
2013-06-28T03:34:30 < timemob> Since they have fixed version
2013-06-28T03:34:49 < englishman> 300-600mA constant load, 6-15v input, small surface area to fit passives, i had considered lm2594m
2013-06-28T03:36:07 < qyx_> go for higher freq if you want small passives
2013-06-28T03:36:16 < qyx_> this one is 150kHz only
2013-06-28T03:36:34 < qyx_> 100uH inductor is quite big
2013-06-28T03:36:35 < timemob> Ya 150khz - Xbox sized coil
2013-06-28T03:36:47 < englishman> also i'd like to keep the cost low
2013-06-28T03:37:07 < qyx_> for l5973d you have only 15uH and it is even cheaper
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2013-06-28T03:37:59 < englishman> hmm i thought i had looked at that one, i guess not
2013-06-28T03:42:04 < ds2> 100uH can be reasonable size
2013-06-28T03:42:09 < ds2> 100mH is big :(
2013-06-28T03:42:14 < timemob> There's a cheap aoz part too
2013-06-28T03:42:34 < timemob> With like 36 v in
2013-06-28T03:42:39 < ds2> for switchers, you got to watch the Isat and the DC resistance
2013-06-28T03:43:06 < timemob> I just watch price
2013-06-28T03:43:13 < timemob> Like a pro
2013-06-28T03:43:23 < ds2> good way to have things not work :D
2013-06-28T03:44:11 < qyx_> englishman: also look at ncp3170, it's 4.5-18 Vin, 3A continuous
2013-06-28T03:44:19 < qyx_> 500kHz/1MHz
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2013-06-28T04:01:28 < englishman> that one i hadn't seen. sure is cheap, but appears to be discontinued?
2013-06-28T04:01:49 < englishman> at least, digikey is out across the board
2013-06-28T04:02:49 < englishman> l5973d is dirt cheap
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2013-06-28T04:19:06 < timemob> http://www.imgur.com/Q3acls8.jpeg
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2013-06-28T05:24:59 < dongs> dammit. im looking at 3 implementations of GPIO driver and they all suck in their own ways
2013-06-28T05:25:07 < dongs> stdperiphlib, libopencm3, laks.
2013-06-28T05:25:11 < dongs> do i dare looking at maple
2013-06-28T05:25:14 < dongs> or is it jut pure aids there.
2013-06-28T05:26:06 < dongs> hmm. maple looks surprisingly non-aids
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2013-06-28T05:54:33 < emeb_mac> gpio? srsly? what's so tough about that?
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2013-06-28T06:15:28 < ds2> there are 32 bits to screw with
2013-06-28T06:19:50 < emeb_mac> and?'
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2013-06-28T06:30:11 < emeb_mac> wtf japan? https://maps.google.com/maps?hl=ja&ll=35.704029,139.557867&spn=0.001102,0.002642&t=m&layer=c&cbll=35.704074,139.557732&panoid=gT28ssf0BB2LxZ63JNcL1w&cbp=12,295.65,,0,5.19&z=19&utm_source=buffer&utm_campaign=Buffer&utm_content=buffer29c99&utm_medium=twitter
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2013-06-28T08:31:08 < dongs> emeb_mac: mega old
2013-06-28T08:31:19 < emeb_mac> ya
2013-06-28T08:50:11 < Tectu> this...
2013-06-28T08:50:12 < Tectu> <projectdp> and i didn't go to college to write code, or steal code, asshole.
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2013-06-28T09:04:18 < R2COM> http://i.imgur.com/7Sd26bN.png
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2013-06-28T09:10:55 < upgrdman> dongs: i agree about the libs sucking. i ended up writing my own for the f0
2013-06-28T09:11:18 < dongs> ya but yours sucks more
2013-06-28T09:11:21 < dongs> ive seen it
2013-06-28T09:11:34 < upgrdman> i can now setup a gpio with something as trivial as: gpio_setup(PA13, AF, OPEN_DRAIN, FIFTY_MHZ, PULL_UP, AF1);
2013-06-28T09:11:36 < upgrdman> i redid it
2013-06-28T09:11:46 < upgrdman> my old lib sucked ass. yes, i agree
2013-06-28T09:12:13 < upgrdman> well my new lib isn't wonderful, but its better :)
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2013-06-28T09:20:05 < Thorn> does that ST NFC EEPROM only work with ST transceivers?
2013-06-28T09:20:20 < Thorn> M24LR04E
2013-06-28T09:22:10 < Tectu> R2COM, what does the 'P' of PGND stand for? Processor GND? DGND is Digital GND  I suppose?
2013-06-28T09:23:00 < jpa-> power ground, i think
2013-06-28T09:23:15 < jpa-> like "i'm going to dump 500 amperes of motor return current here, ok?"
2013-06-28T09:23:40 < R2COM> yes
2013-06-28T09:23:54 < R2COM> except that there wont be any return current
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2013-06-28T09:52:17 < R2COM> wanted to make another digital board to stick in an order tomorrow... ahh too late
2013-06-28T09:52:20 < R2COM> or maybe not
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2013-06-28T10:18:23 < dongs> sup dongs
2013-06-28T10:19:19 < R2COM> lots of stuff
2013-06-28T10:19:36 < dongs> my failrf pcbs are done
2013-06-28T10:20:05 < dongs> and i got the tuner chip samples.
2013-06-28T10:20:11 < dongs> but wont be back till monday evening.
2013-06-28T10:20:12 < dongs> blah.
2013-06-28T10:20:30 < R2COM> what is the application of that shit?
2013-06-28T10:20:41 < dongs> trolling, mostly
2013-06-28T10:20:49 < R2COM> I mean the tuner
2013-06-28T10:20:53 < R2COM> what for
2013-06-28T10:21:13 < dongs>  // enable VHF filter // disable UHF & GPS
2013-06-28T10:21:28 < dongs> R2COM: digital tv
2013-06-28T10:21:36 < R2COM> so porn then
2013-06-28T10:25:03 < dongs> digital porn
2013-06-28T10:25:37 < R2COM> what is frequency range of all that stuff?
2013-06-28T10:25:43 < R2COM> like from what to what freq
2013-06-28T10:25:57 < dongs> 93 to 860 or so
2013-06-28T10:26:02 < R2COM> hm
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2013-06-28T10:26:24 < R2COM> so most of its filters I guess could be done with passives
2013-06-28T10:26:42 < dongs> the only filter it has is that shit near antenna input
2013-06-28T10:26:47 < dongs> i dont even know what it does either
2013-06-28T10:27:01 < R2COM> from passives?
2013-06-28T10:27:06 < dongs> yeah
2013-06-28T10:27:12 < dongs> its like cap/coil/couple more caps
2013-06-28T10:27:23 < R2COM> maybe some sort of a lpf
2013-06-28T10:27:32 < dongs> right
2013-06-28T10:27:35 < R2COM> with not sharp edge at all
2013-06-28T10:28:01 < R2COM> I guess the whole idea of that shit is also to be cheap
2013-06-28T10:28:20 < dongs> http://i.imgur.com/5kp4Oud.png i pasted it before
2013-06-28T10:28:23 < dongs> yea
2013-06-28T10:28:24 < R2COM> 93 to 860 is realtime continuous bandwidth??
2013-06-28T10:28:43 < dongs> what the fuck does that mean?
2013-06-28T10:28:51 < dongs> no it tunes into 8mhz channel in that
2013-06-28T10:29:00 < R2COM> yeah... otherwise... haha!
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2013-06-28T10:31:03 < dongs> heh
2013-06-28T10:31:40 < R2COM> so I guess theres some really good compression engine on digital side
2013-06-28T10:31:48 < R2COM> otherwise 8MHz is not kinda a lot for data transmission
2013-06-28T10:33:20 < dongs> wtih dvb-t2 yo ucan fit 50mbit into 8mhz
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2013-06-28T10:44:23 < scrts> you can do the same with dvb-c
2013-06-28T10:44:27 < scrts> which is simpler :)
2013-06-28T10:45:36 < scrts> or let's just call it QAM256
2013-06-28T10:47:44 < zyp> 8MHz gives a max symbol rate of 16MHz, so to manage that you just need to put a bit over 3 bits per symbol - QAM16 would do
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2013-06-28T10:51:08 < dongs> yeah t2 does 50 with qam256
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2013-06-28T11:52:36 < dongs> http://i.imgur.com/L0ryf7e.jpg ready for fail next week
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2013-06-28T12:06:27 < PaulFertser> dongs: 10 throw-away boards?
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2013-06-28T12:11:39 < kfoltman> dongs: some FPGA thingy?
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2013-06-28T12:25:29 < Tectu> that does not look like a typical FPGA board
2013-06-28T12:26:02 < Tectu> dongs, someone seems to like placing tracks extremely close to a board outline
2013-06-28T12:27:31 < kfoltman> Tectu: I'm judging purely from presence of weird voltages like 1.2V, chances are that I'm 200% wrong :)
2013-06-28T12:28:09 < Tectu> kfoltman, oh, I missed those, good observation
2013-06-28T12:28:19 < Tectu> kfoltman, definitely some RF magic since there's some SMA footprint on the right
2013-06-28T12:29:21 < kfoltman> RF magic? like vias far from any components?
2013-06-28T12:35:28 < dongs> lol yeah, that 5V trace is pretty close.
2013-06-28T12:35:33 < dongs> but whatever. just throwaway stuff
2013-06-28T12:35:41 < dongs> if it works ill doit proper
2013-06-28T12:37:00 < Tectu> dongs, so what is it
2013-06-28T12:37:13 < dongs> scroll up i answered more than once
2013-06-28T12:37:32 < Tectu> I see, thanks
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2013-06-28T13:26:22 < qyx_> ah, max21000+ samples here
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2013-06-28T17:31:45 < dongs> qyx_: wasnt that the gyro or something?
2013-06-28T17:32:21 < qyx_> yep
2013-06-28T17:32:35 < dongs> interesting.
2013-06-28T17:32:37 < dongs> they told me to fuck off.
2013-06-28T17:32:41 < dongs> maybne i ordered too early.
2013-06-28T17:44:31 < jon1012> I received my new test boards... now on to soldering *shoots himself* http://t.co/IzDvXe7HLi
2013-06-28T17:47:16 < kfoltman> jon1012: sounds like something you actually want to do after battling with stuff like USB core :D
2013-06-28T17:47:30 < kfoltman> simple manual labour
2013-06-28T17:49:35 < jon1012> I don't know if simple is the word, but placing thousands of solder paste points and 400 components if more like a machine job
2013-06-28T17:55:55 < kfoltman> OK, 400 components might be a little bit *too* repetitive
2013-06-28T17:58:08 < kfoltman> jon1012: with that number I'd probably consider making a stencil, dunno, never done that before
2013-06-28T17:58:27 < kfoltman> well, or, rather "getting a stencil made for me"
2013-06-28T18:03:32 < jon1012> yup
2013-06-28T18:03:35 < jon1012> didn't do it
2013-06-28T18:03:41 < jon1012> :(
2013-06-28T18:05:25 < kfoltman> jon1012: no ghetto workarounds available?
2013-06-28T18:06:12 < zyp> I'd get a stencil way before hitting 1000 pads
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2013-06-28T18:26:34 < jon1012> kfoltman, I don't know, what do you call ghetto workarounds ?
2013-06-28T18:27:17 < kfoltman> jon1012: dunno, cutting out the slots in overhead kinda sheets with a paper knife or something like that?
2013-06-28T18:27:42 < kfoltman> overhead kinda transparent plastic sheets
2013-06-28T18:27:50 < kfoltman> probably not rigid enough
2013-06-28T18:28:13 < rigid> one rigid is enough for any channel -.-
2013-06-28T18:28:23 < rigid> :-P
2013-06-28T18:29:39 < kfoltman> jon1012: it would only make sense if the board is basically gazillion copies of the same layout
2013-06-28T18:29:45 < kfoltman> and I'm not sure if it could work at all
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2013-06-28T18:43:24 < dongs> looks like led matrixs
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2013-06-28T19:02:07 < jon1012> dongs, eh indeed
2013-06-28T19:05:21 < rlc> for the stm32f4 to boot from usb bootloader, do I have to install an external clock?
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2013-06-28T19:11:47 < zyp> yep
2013-06-28T19:16:34 < kfoltman> usb bootloader... as in, usb host to load application code, or usb device that is being uploaded code to run from the host?
2013-06-28T19:17:13 < zyp> the latter
2013-06-28T19:18:55 < kfoltman> in any case, I don't think the usb transceiver can work well using HSI
2013-06-28T19:19:03 < kfoltman> not that I tried, no
2013-06-28T19:25:58 < rlc> so the bootloader requires an external crystal?
2013-06-28T19:27:18 < rlc> if so, is there a specific crystal frequency, or can  I just choose any?
2013-06-28T19:28:59 < zippe> No, you can run the USB bootloader off the internal osc
2013-06-28T19:29:22 < zippe> It's all covered quite clearly in the documentation, if you take the time to read it
2013-06-28T19:30:14 < zippe> Just think about it for a second … how would you tell the ROM what your external crystal frequency was?
2013-06-28T19:30:32 < ddrown> there's an app note about how the micro detects the HSE's frequency
2013-06-28T19:30:51 < kfoltman> zippe: it could measure the ratio between HSE and HSI and quantize it to typical values? :P
2013-06-28T19:33:08 < ddrown> "For USB DFU bootloader V2.0, the device first tries the 25 MHz configuration, then, if it fails, the 14.7456 MHz configuration, and finally, if it fails, the 8 MHz configuration"
2013-06-28T19:33:09 < rlc> ah, it says in the datasheet that it has to be from 4 to 26MHz
2013-06-28T19:33:33 < zippe> 8)  So someone's reading something
2013-06-28T19:34:03 < ddrown> AN3156
2013-06-28T19:34:32 < zippe> ddrown: Interestingly, I've used the DFU bootloader on the F405 with a 24MHz crystal
2013-06-28T19:35:12 < zippe> ddrown: and I was fairly sure I recalled using it on a board where the oscillator was not working, but I could believe I'm mistaken there
2013-06-28T19:36:05 < karlp> one version of it only required an integer valued mhz, might hve changed in "v2"
2013-06-28T19:36:05 < ddrown> interesting. I've never actually used the USB bootloader, so all I know is from the docs
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2013-06-28T20:05:48 < rlc> Is the NRST internally pulled-up or should I pull it up externally?
2013-06-28T20:06:20 < Thorn> better pull it up for noise immunity
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2013-06-28T20:10:00 < jpa-> rlc: it is internally pulled up, but if you attach any wires that the user can accidentally touch, it's better to add a 10kohm pull-up
2013-06-28T20:10:51 < rlc> ok thanks
2013-06-28T20:11:37 < rlc> I've been fighting to get that usb working, but no luck so far
2013-06-28T20:12:43 < jpa-> does the processor otherwise work?
2013-06-28T20:12:53 < rlc> yes
2013-06-28T20:13:15 < jpa-> usb bootloader + 8MHz crystal worked very nicely out-of-the-box for me
2013-06-28T20:13:36 < rlc> I'm using a 4MHz crystal though
2013-06-28T20:13:58 < karlp> why, were they substantially cheaper or smaller or leftover or something?
2013-06-28T20:14:17 < rlc> I'm trying to boot from the usb bootloader to at least know the usb is working
2013-06-28T20:14:29 < rlc> yes, 4MHz are cheaper
2013-06-28T20:14:43 < rlc> from what I saw on digikey
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2013-06-28T20:14:55 < jpa-> big difference?
2013-06-28T20:15:03 < rlc> wait, I thing there was another reason
2013-06-28T20:15:32 < rlc> I needed to drive MCO2 at 1MHz, so 4MHz divided by 4 would give me that
2013-06-28T20:16:27 < jpa-> 1MHz is easy enough to generate with just a timer
2013-06-28T20:18:56 < rlc> yes, but it will some code though
2013-06-28T20:19:05 < jpa-> 3 lines :P
2013-06-28T20:19:54 < rlc> but shouldn't 4MHz work just as well as HSE?
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2013-06-28T20:28:35 < jpa-> rlc: yeah, if the bootloader supports it
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2013-06-28T20:28:39 < jpa-> i'm not 100% sure
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2013-06-28T20:34:04 < rlc> ok, I'm getting some pulses on the d+ line, should I see something on the d- line as well?
2013-06-28T20:34:40 < jpa-> more important: does the host try to enumerate?
2013-06-28T20:34:42 < jpa-> look at dmesg
2013-06-28T20:35:10 < rlc> no sure, I'm just trying to boot from the usb bootloader
2013-06-28T20:35:22 < jpa-> you have the usb cable connected to a pc, right?
2013-06-28T20:35:44 < rlc> yes, exactly
2013-06-28T20:35:52 < jpa-> does the pc detect a new usb device?
2013-06-28T20:36:00 < rlc> not yet
2013-06-28T20:36:07 < jpa-> which os?
2013-06-28T20:36:32 < rlc> windows vista
2013-06-28T20:36:43 < jpa-> hm.. dunno if it indicates enumeration in any way
2013-06-28T20:36:51 < rlc> is the D- supposed to be at gnd and d+ at 3.3V?
2013-06-28T20:37:03 < jpa-> yes
2013-06-28T20:37:11 < jpa-> and negative pulses on D+ would be usb reset
2013-06-28T20:37:43 < ds2> jpa-: who creates those pulses for reset?
2013-06-28T20:37:51 < jpa-> the PC
2013-06-28T20:38:07 < ds2> isn't there a way for the device to do the same?
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2013-06-28T20:38:11 < jpa-> but the +3.3V comes from your device
2013-06-28T20:38:15 < jpa-> so atleast it boots
2013-06-28T20:38:52 < jpa-> well, in a way.. the device can simulate a disconnect, which would look equivalent on the bus
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2013-06-28T20:55:36 < rlc> I'm getting one short negative pulse  followed by one longer on the D+ line
2013-06-28T20:55:47 < rlc> Is there something else to expect after that?
2013-06-28T20:55:59 < rlc> the pulses keep repeating
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2013-06-28T22:06:21 < rlc> I think I figured why my usb isn't working, HSE not oscillating
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2013-06-28T22:08:17 < rlc> my crystal is having trouble starting
2013-06-28T22:08:29 < rlc> any way to get it easier to start?
2013-06-28T22:09:19 < rlc> changed my load capacitance from 15pf to 22pf to 27 pf, but it's not starting still
2013-06-28T22:09:48 < rlc> changed the crystal to a new one, same issue
2013-06-28T22:10:02 < rlc> crystal is 4MHz
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2013-06-28T22:21:07 < qyx_> do you have your layout and schematic somewhere?
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2013-06-28T22:48:18 < rlc> yeah, hold on
2013-06-28T22:50:57 < rlc> http://imagebin.org/262786
2013-06-28T22:51:14 < rlc> crystal is X1
2013-06-28T22:51:50 < rlc> using this part number: http://www.digikey.ca/product-detail/en/ATS040B/CTX896-ND/2292860
2013-06-28T22:55:29 < qyx_> is the hse working normally? did you try running something on it besides system bootloader?
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2013-06-28T23:00:42 < rlc> not sure, but it was working before using my own code
2013-06-28T23:01:12 < rlc> but not for the bootloader
2013-06-28T23:03:20 < qyx_> did you set boot0 and boot1?
2013-06-28T23:04:45 < qyx_> btw that board seems to be very strange
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2013-06-28T23:23:08 < rlc> yes, I set boot0 to 3.3V
2013-06-28T23:23:23 < rlc> what is strange?
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--- Day changed Sat Jun 29 2013
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2013-06-29T01:24:43 < karlp> bleh, thanks gdb: "Can not force return from an inlined function."
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2013-06-29T01:51:33 < qyx_> if i want to feed both mod&demod with single LO, should i use some kind of rf splitter?
2013-06-29T01:53:52 < zyp> karlp, of course you can't :p
2013-06-29T01:55:27 < zyp> r seen that error before
2013-06-29T01:55:43 < zyp> woops
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2013-06-29T02:21:39 < karlp> I did a thing and it (mostly) worked, whee: http://palmtree.beeroclock.net/~karlp/udp-mang.png
2013-06-29T02:27:06 < zyp> nice
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2013-06-29T02:28:44 < karlp> now if only it didn't crash as soon as it tries to send the second packet ;)
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2013-06-29T06:09:08 < R2COM1> hammer hammer!
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2013-06-29T06:11:50 < emeb_mac> you can't touch this
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2013-06-29T08:10:18 < dongs> sup dongs
2013-06-29T08:10:35 < R2COM> TONGS
2013-06-29T08:10:37 < R2COM> DONGS
2013-06-29T08:10:38 < R2COM> BONGS
2013-06-29T08:10:39 < R2COM> KONGS
2013-06-29T08:10:41 < R2COM> MONGS
2013-06-29T08:10:42 < R2COM> BONGS
2013-06-29T08:10:44 < dongs> what.
2013-06-29T08:10:44 < R2COM> JONGS
2013-06-29T08:10:54 -!- dongs is now known as DONGS
2013-06-29T08:10:58 < R2COM> yeah
2013-06-29T08:11:00 < R2COM> thats better
2013-06-29T08:11:01 < Thorn> SCHLONGS
2013-06-29T08:11:04 < DONGS> following R2COM adice
2013-06-29T08:11:06 < DONGS> advice
2013-06-29T08:11:09 < R2COM> haha
2013-06-29T08:11:31 < R2COM> now your nick is same amplitude as mine
2013-06-29T08:13:24 < R2COM> http://i.imgur.com/ovqKwvW.png
2013-06-29T08:13:30 < R2COM> was lazy to do all 3D models
2013-06-29T08:13:50 < R2COM> those big green things are Diodes
2013-06-29T08:13:56 < R2COM> driver
2013-06-29T08:13:58 < R2COM> opto
2013-06-29T08:14:00 < R2COM> and some passives
2013-06-29T08:14:05 < R2COM> and some mosfets
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2013-06-29T08:18:03 < baird> and some pink
2013-06-29T08:18:54 < R2COM> well, if I am about to show my boards to one of the chicks, so that at least it catches her eye
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2013-06-29T08:26:56 < DONGS> http://bcas.tv/paste/results/b7X7wQ71.html
2013-06-29T08:27:02 < DONGS> how is this for initializing gpio
2013-06-29T08:27:20 < R2COM> fuck that shit
2013-06-29T08:28:12 < R2COM> http://pastebin.com/RMsJpAqD
2013-06-29T08:28:22 < DONGS> fuck off, i am on 2kb/sec connection
2013-06-29T08:28:26 < DONGS> repaste your shit at bcas.tv
2013-06-29T08:28:33 < DONGS> pastebin loads like 500k of javascript
2013-06-29T08:28:48 < DONGS> and uses PRISM to steal my data
2013-06-29T08:29:18 < R2COM> http://bcas.tv/paste/results/LhCdWO86.html
2013-06-29T08:29:53 < baird> NoScript is your Freeeiinnndddd..
2013-06-29T08:30:08 < DONGS> R2COM: holy shit aids
2013-06-29T08:33:10 < DONGS> yes, it works
2013-06-29T08:33:11 < DONGS> nice
2013-06-29T08:33:18 < R2COM> long time ago...when I was studying digital related stuff.. I had to do FSMs by hand with registers etc...
2013-06-29T08:33:21 < R2COM> with pencil
2013-06-29T08:33:38 < R2COM> nothing was scarylooking after that
2013-06-29T08:34:33 < R2COM> I still couildnt get any of my free time to go deeper on stm32
2013-06-29T08:36:09 < baird> "uint32_t pinpos" lol
2013-06-29T08:37:29 < baird> then again, it'll be on a 32bit arch
2013-06-29T08:38:00 < baird> "Back in my day, we used to declare things with the register attribute.."
2013-06-29T08:38:34 < R2COM> so you are old fart then?
2013-06-29T08:39:25 < baird> K&R 4 lyfe
2013-06-29T08:41:26 < R2COM> dont know what that is
2013-06-29T08:45:08 < R2COM> so
2013-06-29T08:45:18 < R2COM> any other IDEs now who can compete with Keil
2013-06-29T08:45:28 < R2COM> or no
2013-06-29T08:45:29 < R2COM> ?
2013-06-29T08:46:08 < DONGS> baird: actually using int for counter is faster than uint8..
2013-06-29T08:47:16 < baird> I realised that.
2013-06-29T08:48:26 < DONGS> i sorta took stdlib shit as reference but their crap was just aids
2013-06-29T08:48:37 < DONGS> i duno whats worse a /8 and % 8 or duplicating code for CRL/CRH
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2013-06-29T08:49:45 < DONGS> other stuff was limited that I couldnt init more than one pin at once
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2013-06-29T09:16:32 < baird> The code looks a lot more sensible with all the comments taken out..
2013-06-29T09:20:05 < baird> Nuts, Evi Nemeth is missing/dead..
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2013-06-29T15:53:48 < baird> OH SWEET JESUS! .. http://www.huffingtonpost.com/2013/06/27/captain-planet-movie_n_3513017.html
2013-06-29T15:56:34 < karlp> you know you were waiting for it
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2013-06-29T15:59:07 < baird> The girls had better be hot./
2013-06-29T16:12:48 < DONGS> wat
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2013-06-29T16:15:22 < DONGS> uhm
2013-06-29T16:15:35 < DONGS> GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
2013-06-29T16:15:37 <+Steffanx> ##stm32-crap
2013-06-29T16:15:39 <+Steffanx> oh, :)
2013-06-29T16:15:45 < DONGS> is this really just writing a couple bits
2013-06-29T16:15:47 < DONGS> into MAPR
2013-06-29T16:15:59 < DONGS> the function in stdperiphlib is fucking 500 lines long
2013-06-29T16:18:13 < DONGS> time to read RM
2013-06-29T16:18:19 <+Steffanx> It looks only like ~50 lines
2013-06-29T16:18:26 <+Steffanx> and it's mapr or mapr2
2013-06-29T16:19:02 < DONGS> yes but mask trash and weird trash lke tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15)*0x10));
2013-06-29T16:19:06 < DONGS> wtf???
2013-06-29T16:21:11 < DONGS> https://github.com/leaflabs/libmaple/blob/master/libmaple/stm32f1/gpio.c#L159 and then i see shit like this in libcrapple
2013-06-29T16:21:17 <+Steffanx> Yeah, its wonderful
2013-06-29T16:21:46 < DONGS> lets see what libclosedcm3 does.
2013-06-29T16:22:35 < DONGS> ok so far looks same as maple
2013-06-29T16:22:36 < DONGS> #define AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_ON(0x2 << 24)
2013-06-29T16:23:12 <+Steffanx> I like that LSB_MASK more :)
2013-06-29T16:23:13 <+Steffanx> #define LSB_MASK                    ((uint16_t)0xFFFF) :D
2013-06-29T16:23:30 < DONGS> https://github.com/libopencm3/libopencm3/blob/master/lib/stm32/f1/gpio.c#L169
2013-06-29T16:23:31 < DONGS> ....
2013-06-29T16:25:50 <+Steffanx> Heh, the comments dont agree with the actual parameters
2013-06-29T16:26:17 <+Steffanx> "uint32_t swjdisable" => "swjdisable Unsigned int8" or is that something done on purpose
2013-06-29T16:27:10 <+Steffanx> oh, i blame zyp for that
2013-06-29T16:27:26 < DONGS> oh?
2013-06-29T16:27:29 < DONGS> did he do that?
2013-06-29T16:27:53 <+Steffanx> He changed it from u8 to u32, yes
2013-06-29T16:28:23 < DONGS> AFIO->MAPR |= (AFIO_MAPR_SWJ_CFG_NO_JTAG_SW & AFIO_MAPR_SWJ_MASK);
2013-06-29T16:28:25 < DONGS> well thats all I had to do
2013-06-29T16:29:01 < DONGS> SWJ_MASK is like 0x7 << 24
2013-06-29T16:30:02 < DONGS> dont really need mask either
2013-06-29T16:30:05 < DONGS> since im not writing anthing else to it
2013-06-29T16:33:17 < DONGS> hm now just need to get rid of gpio_extilineconfig
2013-06-29T16:33:40 < DONGS> that doesnt look so bad
2013-06-29T16:38:10 <+Steffanx> You're moving away from the stdperipheral lib?
2013-06-29T16:38:42 < DONGS> yeah kinda
2013-06-29T16:38:57 < DONGS> got a bit tired of the aids
2013-06-29T16:39:38 < DONGS> but still not nutcasey shit wehre i rewrite all register names and headers and interrupt vectors
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2013-06-29T19:01:00 < Laurenceb_> yo
2013-06-29T19:01:29 < dongs> did you get fired
2013-06-29T19:01:33 < dongs> Steffanx was missing you
2013-06-29T19:01:57 < Laurenceb_> moved to Murica
2013-06-29T19:02:23 < dongs> wat
2013-06-29T19:02:40 < Laurenceb_> I'm in Vermont
2013-06-29T19:03:04 < dongs> watch out, now you cant browse cp
2013-06-29T19:03:08 < dongs> the PRISM has ytou
2013-06-29T19:03:09 < dongs> you
2013-06-29T19:03:34 < dongs> cp in america is pretty srs biz
2013-06-29T19:03:51 < Laurenceb_> ststus : joining NRA
2013-06-29T19:04:49 -!- akaWolf [~akaWolf@unaffiliated/akawolf] has quit [Read error: Connection reset by peer]
2013-06-29T19:05:01 < Laurenceb_> so far i've visited a frat house :P
2013-06-29T19:05:23 < Laurenceb_> american girls are hot
2013-06-29T19:06:15 < dongs> google image search disagrees
2013-06-29T19:06:42 < dongs> http://wheredowefindthetime.com/wp-content/uploads/2012/10/American-Girl-Doll-Party-Elaina-the-bday-girl.jpg this is the kinda american girls Laurenceb_ is into
2013-06-29T19:09:54 < BrainDamage> OLD
2013-06-29T19:12:25 -!- Laurenceb_ [~laurence@vlsi1.eee.nottingham.ac.uk] has quit [Quit: Lost terminal]
2013-06-29T19:14:09 < Thorn> >.nottingham.ac.uk
2013-06-29T19:19:15 < Thorn> >Using Arduino, I'm trying to detect whether Raspberry Pi has successfully turned itself off.
2013-06-29T19:21:32 -!- Laurence1 [~laurence@vlsi1.eee.nottingham.ac.uk] has joined ##stm32
2013-06-29T19:21:36 < Laurence1> attn dongs
2013-06-29T19:21:39 < Laurence1> http://www.runfoldplastics.co.uk/images/popup/rec1%20(a)%20(pop).jpg
2013-06-29T19:25:11 < dongs> retweeting in #reprap
2013-06-29T19:27:24 < Laurence1> lol
2013-06-29T19:33:04 < Laurence1> they are already up their own asses
2013-06-29T19:33:20 < dongs> ya reprap is worthless
2013-06-29T19:33:24 < dongs> they all run lunix thre
2013-06-29T19:33:27 < dongs> and use pololus
2013-06-29T19:33:31 < dongs> and tarduino
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2013-06-29T19:36:19 < Laurence1> https://ultimachine.com/sites/default/files/images/arduinoMega-pololu-angle.preview.jpg
2013-06-29T19:36:25 < Laurence1> looks pretty tard
2013-06-29T19:38:45 < dongs> looks like a typical 3ed printer
2013-06-29T19:38:54 < dongs> there's also a powerlolu
2013-06-29T19:39:59 < Laurence1> ive got a polodu driver hooked up to an F4discovery
2013-06-29T19:40:04 < Laurence1> works ok
2013-06-29T19:40:19 < dongs> im sure..
2013-06-29T19:40:31 < englishman> mr dongs, on your ipad display thing, there are some passives on the usb D+ D- line, looks like 22R, why is that? are they required?
2013-06-29T19:42:19 < dongs> yes
2013-06-29T19:42:26 < dongs> .google usb 22 ohm resistor
2013-06-29T19:42:45 < englishman> but not on cp2102?
2013-06-29T19:42:53 < dongs> correct, they're internal
2013-06-29T19:42:57 < dongs> also F3 they're internal
2013-06-29T19:43:01 < dongs> F4 i dont reembmer
2013-06-29T19:43:07 < dongs> also ftdi shit, internal
2013-06-29T19:43:19 < englishman> ah.
2013-06-29T19:43:21 < englishman> thanks
2013-06-29T19:43:52 < Laurence1> ftdi: internal until it self distructs
2013-06-29T19:44:48 < dongs> englishman: http://www.ece.utah.edu/~harrison/ece5720/resistor.pdf
2013-06-29T19:45:29 < Laurence1> how babby formed.. how resistor resist?
2013-06-29T19:48:18 < englishman> dongs thanks but i don't think i will be designing any ICs this week
2013-06-29T19:48:37 < dongs> heh
2013-06-29T19:48:44 < dongs> you could be like jewy ellisworth
2013-06-29T19:48:50 < dongs> and blog up some silicone baking
2013-06-29T19:48:58 < dongs> copied from a 1970s scientific american
2013-06-29T19:49:04 < dongs> pretending you invented it
2013-06-29T19:56:49 < Laurence1> and enjoy the fapping basement dwellers
2013-06-29T19:57:40 < BrainDamage> he has the boobs, but he lacks the vagina
2013-06-29T19:57:49 < BrainDamage> so I guess it wouldn't be very effective
2013-06-29T20:00:19 < dongs> A newly built mobile multimedia broadcasting network will be introduced
2013-06-29T20:00:19 < dongs> nationwide after analog broadcasting network shut down on July 2011.
2013-06-29T20:00:19 < dongs> 9 Ad ti ISDB Adopting ISDB-Tmm t h l h d f ISDB technology, enhanced from ISDB-T hi h i T, which is
2013-06-29T20:00:22 < dongs> proven through actual worldwide penetration.
2013-06-29T20:00:25 < dongs> 9 Expected date of launch: April 1
2013-06-29T20:00:26 < dongs> 2012
2013-06-29T20:00:28 < dongs> st
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2013-06-29T20:00:43 < dongs> japs love to launch trash on april 1st
2013-06-29T20:02:09 < dongs> http://jp.fujitsu.com/group/fsl/release/20110331-1.html whoa chcek out that IC
2013-06-29T20:02:14 < dongs> it has some caps? or something stickin out of it
2013-06-29T20:02:31 < dongs> http://jp.fujitsu.com/imgv3/jp/group/fsl/release/mb86a35.jpg
2013-06-29T20:02:37 < dongs> looks like chip inductors, lol
2013-06-29T20:05:56 < Thorn> who makes low Rds(on) mosfets except IR?
2013-06-29T20:06:59 < dongs> infineon?
2013-06-29T20:07:26 < qyx_> nxp has some psmnXXX stuff
2013-06-29T20:07:36 < qyx_> < 1mohm
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2013-06-29T20:30:54 < Laurence1> New Hampshire is exciting
2013-06-29T20:30:59 < Laurence1>  /jk
2013-06-29T20:31:07 < Laurence1> maybe if you like trees
2013-06-29T20:32:55 < Tectu> http://pastebin.com/iGvKLC5W
2013-06-29T20:32:58 < Tectu> gdb says:       $3 = {1.08686363e-19, 1.45412742e-41, 1.08686363e-19, 0, 1.08762153e-19, 3.8901585e-34}
2013-06-29T20:33:06 < Tectu> am I doing something obviously wrong?
2013-06-29T20:34:02 < PaulFertser> Tectu: returning a pointer to a local variable?
2013-06-29T20:34:13 < Tectu> *facepalm*
2013-06-29T20:34:26 < Tectu> still, gdb says that just before the return
2013-06-29T20:36:37 < Tectu> oh, there's so much stuff wrong
2013-06-29T20:36:40 < Tectu> also the return type
2013-06-29T20:36:50 < PaulFertser> Tectu: probably some non-obvious optimisation. The compiler sometimes is smart enough to not do anything when it's useless.
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2013-06-29T20:39:08 < Tectu> PaulFertser, it's -O2
2013-06-29T20:41:12 < Tectu> it does the same with -O1
2013-06-29T20:44:04 < karlp> if you're doing _wrong_ shit, the compielrs free to go, "ooh yeah, undefined behaviour here we come" at any optimization level
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2013-06-29T22:49:56 < Laurence1> dead in here
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2013-06-29T23:20:11 < Tectu> make: Warning: File `.dep/fatfsWrapper.o.d' has modification time 6686 s in the future
2013-06-29T23:20:12 < Tectu> make: Nothing to be done for `all'.
2013-06-29T23:20:12 < Tectu> make: warning:  Clock skew detected.  Your build may be incomplete.
2013-06-29T23:20:13 < Tectu> wtf
2013-06-29T23:21:45 <+Steffanx> Arch screwing you over again?
2013-06-29T23:23:16 < qyx_> you misclocked your clock probably
2013-06-29T23:23:20 < qyx_> thats nearly 2 hours
2013-06-29T23:23:29 < qyx_> but make clean; make should work
2013-06-29T23:25:23 < Tectu> qyx_, fun fact is that it throws the same error. Maybe I have some hidden dependencies
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2013-06-29T23:25:48 < qyx_> Tectu: you can try to remove .dep folders
2013-06-29T23:25:59 < Tectu> qyx_, isn't that done by make clean?
2013-06-29T23:26:05 < qyx_> probably not
2013-06-29T23:26:14 < Tectu> -rm -fR .dep $(BUILDDIR)
2013-06-29T23:26:16 < Tectu> it does
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2013-06-29T23:26:31 < qyx_> then i dont't know
2013-06-29T23:26:46 < Tectu> it only throws this one now
2013-06-29T23:26:47 < Tectu> make: warning:  Clock skew detected.  Your build may be incomplete.
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2013-06-29T23:26:54 < Tectu> never saw that before
2013-06-29T23:27:39 < qyx_> at least this error will  disappear after 6600 seconds
2013-06-29T23:27:49 < qyx_> maybe
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2013-06-29T23:32:53 < Tectu> :D
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2013-06-29T23:57:05 < Tectu> qyx_, it's annoying because it rebuilds all the time the entire project
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2013-06-29T23:59:47 < karlp> building on a network filesystem?
--- Day changed Sun Jun 30 2013
2013-06-30T00:09:14 < Tectu> nope
2013-06-30T00:09:28 < Tectu> might be my hwclock setup
2013-06-30T00:09:34 < Tectu> happened after I booted windows
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2013-06-30T01:21:01 < englishman> anyone used those $20 chinese SWD debuggers?
2013-06-30T01:26:12 < Tectu> englishman, which $20 chinese SWD debuggers? I have a commercial STlinkv2
2013-06-30T01:26:57 < englishman> saw some on ebay, in cheap plastic case like those clone logic analusers
2013-06-30T01:27:12 < englishman> but realized i have st-linkv2 on these discovery boards i can use
2013-06-30T01:27:30 < Tectu> jup
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2013-06-30T01:36:36 < zippe> Anyone tried using line-idle to get UART DMA receive to work right?
2013-06-30T01:37:08 < zippe> It looks to me like there's a race where you might end up stealing a byte from the FIFO when you read DR to clear IDLE
2013-06-30T02:13:20 < zippe> … either ST are morons, or the UART documentation is busted.
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2013-06-30T03:34:14 < dongs> sup dongs
2013-06-30T03:37:29 < emeb_mac> DONGS! YOU'RE ALL CAPS!
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2013-06-30T03:58:07 < dongs> i was
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2013-06-30T07:24:03 < R2COM> http://i.snag.gy/gYJzp.jpg
2013-06-30T07:25:23 < zyp> cute
2013-06-30T07:25:48 < R2COM> some configurable attenuator and couple band pass filters
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2013-06-30T07:34:45 < dongs> sup dongs
2013-06-30T07:34:52 < dongs> cool switches
2013-06-30T07:35:17 < dongs> doesnt each of those SMA shits drop like 3dB
2013-06-30T07:35:37 < R2COM> hm why
2013-06-30T07:35:46 < R2COM> everything has loss of course
2013-06-30T07:35:47 < dongs> or im thinking splitters
2013-06-30T07:35:50 < emeb_mac> R2COM: nice little boards
2013-06-30T07:36:05 < R2COM> yes splitter does
2013-06-30T07:36:08 < R2COM> 3/6
2013-06-30T07:36:08 < zyp> dongs, you're thinking splitters
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2013-06-30T07:37:23 < zyp> -3 dB is a halving of power, which is intuitive when you split the power over two outputs
2013-06-30T07:37:58 < R2COM> those plastic screws bought by accident
2013-06-30T07:38:14 < emeb_mac> nothing wrong with nylon screws
2013-06-30T07:38:17 < R2COM> but they are fine
2013-06-30T07:38:24 < emeb_mac> unless you strip them ;)
2013-06-30T07:38:39 < R2COM> I guess they are cheaper
2013-06-30T07:39:21 < emeb_mac> I get 'em at the local ACE hardware - on purpose.
2013-06-30T07:39:42 < emeb_mac> non-conductive is good for some things
2013-06-30T07:39:49 < R2COM> right
2013-06-30T07:40:11 < R2COM> but for some reason when I want them be in place during reflow, they wont work..
2013-06-30T07:40:15 < emeb_mac> heh
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2013-06-30T07:59:52 < dongs> what happens when i configure a gpio pin thats tied to vcc as pulldown?
2013-06-30T07:59:56 < dongs> is it gonna wokr?
2013-06-30T07:59:58 < dongs> or burn
2013-06-30T08:00:39 < R2COM> no why
2013-06-30T08:00:47 < R2COM> pulldown through resistor
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2013-06-30T08:03:24 < R2COM> is there any way in win7 to print huge pdf splitted on several A4?
2013-06-30T08:03:44 < R2COM> like...if I have huge PDF file, which in scale 1:1 would take say, 6 A4 sheets
2013-06-30T08:03:53 < dongs> fineprint
2013-06-30T08:03:55 < R2COM> and I want to print them so that after that I connect them and see big picture
2013-06-30T08:04:04 < dongs> "fineprint"
2013-06-30T08:04:13 < dongs> though
2013-06-30T08:04:20 < dongs> acrobat has like banner printing
2013-06-30T08:04:22 < dongs> where you can split it
2013-06-30T08:04:25 < dongs> might work as-is
2013-06-30T08:04:27 < dongs> without insatlling anything
2013-06-30T08:04:31 < dongs> check print dialog in acrobat
2013-06-30T08:04:48 < dongs>     RCC_CFGR_PLLMUL = GPIOC->IDR & DMA_CCR1_PL_1 ? RCC_CFGR_PLLMULL6 : RCC_CFGR_PLLMULL9;
2013-06-30T08:05:21 < R2COM> acrobat pdf reader is utterly trash
2013-06-30T08:05:30 < R2COM> it slows down system and makes a mess
2013-06-30T08:05:33 < dongs> nope.
2013-06-30T08:05:36 < R2COM> yes.
2013-06-30T08:05:37 < dongs> i had no issues with it.
2013-06-30T08:05:43 < dongs> stop using old celerons
2013-06-30T08:05:53 < R2COM> what does that has to do with celeron
2013-06-30T08:05:55 < R2COM> bullshit
2013-06-30T08:06:12 < dongs> if your PC is shit, software you run on it is shit
2013-06-30T08:06:18 < R2COM> it also eats lots of resource I noticed
2013-06-30T08:06:21 < R2COM> compared to other readers
2013-06-30T08:06:29 < R2COM> my PC kicks ass
2013-06-30T08:07:47 < Thorn> MODULE_LICENSE("GPL");
2013-06-30T08:09:21 < dongs> sounds like youre workin with aids
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2013-06-30T09:39:42 < R0b0t1> dongs, you think mp3/opus encode from i2s could be done?
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2013-06-30T09:43:56 < dongs> mp3 i duno, I did AAC decode on F4, wasn't too bad, not even using very optimized code
2013-06-30T09:44:06 < dongs> encode is a bit harder..
2013-06-30T09:44:23 < dongs> assuming you find a good fixed point encoder that doesnt need too much ram and shit
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2013-06-30T10:26:04 < R2COM> make sure mp3 encoder is rated -40C min
2013-06-30T10:26:15 < R2COM> otherwise you wont be able to listen to music in harsh environment
2013-06-30T10:28:50 < dongs> hshs
2013-06-30T10:29:17 < dongs> i guess you can rip encoder from rockbox
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2013-06-30T11:54:22 < jpa-> does someone know of a usb bootloader that works with STM32L151?
2013-06-30T11:54:27 < jpa-> maybe the bmp one?
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2013-06-30T12:38:02 < dongs> jpa-: isnt there a good one for many boards in usb-fs devkit?
2013-06-30T12:38:08 < dongs> is L151 = same as F103 usb?
2013-06-30T12:38:18 < dongs> thats where I copied mine for F103 from
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2013-06-30T13:27:32 < jpa-> dongs: yeah, i think it is
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2013-06-30T13:42:02 < Robint91> does anyone know why _write isn't call when calling printf ?
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2013-06-30T14:42:27 < dongs> sup dongs
2013-06-30T14:42:35 < dongs> jpa-: then look at sample in usb-fs lib
2013-06-30T14:42:45 < dongs> they have #ifdef for CL stuff and maybe L stuf
2013-06-30T14:44:38 < dongs> _write? doesnt that depend on what trash you use for printf
2013-06-30T14:45:04 < dongs> i.e. its _putc() in keil
2013-06-30T14:46:40 < dongs> err _putc() in gnutard and fputc() in keil
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2013-06-30T14:54:49 < Robint91> dongs, yeah but it doesn't get called
2013-06-30T14:59:10 < dongs> so what libc uses _write?
2013-06-30T14:59:55 < dongs> duno how it works in gcctard but
2013-06-30T14:59:59 < dongs> just use printd()
2013-06-30T15:00:02 < dongs> er printf()
2013-06-30T15:00:03 < dongs> and try linking
2013-06-30T15:00:09 < dongs> and it should tell oyu what the putchar function is??
2013-06-30T15:00:15 < dongs> if you dont ahve it.
2013-06-30T15:03:15 < Robint91> it links
2013-06-30T15:03:21 < Robint91> it makes working binaries
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2013-06-30T15:22:47 < PaulFertser> dongs: no, in newlib printf itself (and putc() and the others) uses _write.
2013-06-30T15:24:59 < Robint91> PaulFertser, do you have an idea why it doesn't work?
2013-06-30T15:25:28 < Robint91> PaulFertser, when I call _write myself so _write(1, "Hello world", 11);
2013-06-30T15:25:29 < Robint91> it works
2013-06-30T15:28:11 < PaulFertser> Robint91: paste your linker command line please
2013-06-30T15:29:02 < Robint91> PaulFertser, https://gist.github.com/anonymous/5894978
2013-06-30T15:29:27 < Robint91> https://gist.github.com/anonymous/5894980 <- makefile
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2013-06-30T15:37:45 < PaulFertser> Robint91: can you also pastebin the linker map?
2013-06-30T15:38:49 < Robint91> https://gist.github.com/anonymous/5895016/raw/bf3908a3bb56310e0829c0b41baf2f49b47fcb6c/gistfile1.txt
2013-06-30T15:38:52 < Robint91> PaulFertser, ^
2013-06-30T15:39:04 < PaulFertser> Robint91: just fyi, that's how I use newlib (and i'm able to override _write or any other libnosys function simply by adding it to any of my source files): LINKER_FLAGS=-nostartfiles -Xlinker --build-id=none -Xlinker --gc-sections -lc -lnosys -lm
2013-06-30T15:40:09 < Robint91> PaulFertser, yeah, I defined also a _write function
2013-06-30T15:40:45 < PaulFertser> Robint91: that _write implementation getting used by printf is getting linked most probably because you do not have -nostartfiles in your flags.
2013-06-30T15:43:43 < Robint91> PaulFertser, mhh, I have add that flag
2013-06-30T15:43:46 < Robint91> still nothing
2013-06-30T15:44:01 < PaulFertser> Robint91: check carefully, the map file should have changed.
2013-06-30T15:44:58 < Robint91> PaulFertser, I see, ".text._write   0x08000654"  and " .text.printf   0x08000db4"
2013-06-30T15:45:09 < Robint91> which seems okay for me
2013-06-30T15:47:50 < PaulFertser> Robint91: check it's not coming from crt0 now.
2013-06-30T15:48:06 < Robint91> PaulFertser, how do I check that?
2013-06-30T15:53:54 < PaulFertser> Robint91: by searching through the resulting map file.
2013-06-30T15:54:31 < Robint91> PaulFertser, Can't seem to find it
2013-06-30T15:56:12 < PaulFertser> Robint91: can you update the file on gist then?
2013-06-30T15:56:56 < Robint91> PaulFertser, https://gist.github.com/anonymous/3c0893572a0389a4f401/raw/4c86349b7b3148153d35ed3de2da4b486bb760cb/gistfile1.txt
2013-06-30T16:02:21 < PaulFertser> Robint91: hm, looks right to me now. If printf still doesn't work, i'd try adding some putchar('\n') and "stepi" in gdb looking at disasembly to see what it calls in the end.
2013-06-30T16:03:18 < Robint91> PaulFertser, will do
2013-06-30T16:04:04 < PaulFertser> Robint91: probably you're getting confused by the buffering. By default it buffers up to the first newline.
2013-06-30T16:04:17 < PaulFertser> Robint91: so if you do not output it, you won't see _write called.
2013-06-30T16:04:45 < Robint91> PaulFertser, that was it
2013-06-30T16:04:54 < Robint91> added an extra \n
2013-06-30T16:04:58 < Robint91> and it outputs
2013-06-30T16:05:16 < Robint91> can you change this?
2013-06-30T16:05:35 < PaulFertser> Robint91: btw, do you know about semi-hosting? Sometimes it's cool to not need to use any uarts and printf via jtag/swd.
2013-06-30T16:05:43 < PaulFertser> Robint91: yes, you can changes this with setvbuf
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2013-06-30T16:06:07 < Robint91> PaulFertser, semihosting is cool but it slowes down
2013-06-30T16:06:17 < PaulFertser> Robint91: it's quite fast if you buffer :)
2013-06-30T16:06:42 < PaulFertser> Robint91: i.e. if you disable that line-by-line buffering and flush explicitely.
2013-06-30T16:07:02 < Robint91> PaulFertser, I'm doing some timestamping on the uart data
2013-06-30T16:07:05 < PaulFertser> Basically, it's as fast as debugger can readout a memory region + per-call overhead.
2013-06-30T16:07:14 < PaulFertser> Robint91: ok, just in case you wasn't aware of it.
2013-06-30T16:07:57 < Robint91> PaulFertser, the uart is running on 921600
2013-06-30T16:08:39 < PaulFertser> Robint91: impressive
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2013-06-30T16:09:40 < Robint91> PaulFertser, Thank you for the finding my brain bug
2013-06-30T16:09:53 < Robint91> didn't know that printf buffered until newlines
2013-06-30T16:10:05 < Robint91> and my code doesn't output newlines, yet
2013-06-30T16:10:17 < PaulFertser> Robint91: welcome :)
2013-06-30T16:10:28 < dongs> whats blogging
2013-06-30T16:10:46 < dongs> Robint91> didn't know that printf buffered until newlines
2013-06-30T16:10:48 < dongs> mine doesnt
2013-06-30T16:11:42 < PaulFertser> dongs: well, it only means that your printf behaves in an unconventional way, most C programmers expect it to buffer when writing to stdout.
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2013-06-30T16:36:02 < coon> Robint91: hehe 921600 Baud is the fastest speed I was using on stm32 so far
2013-06-30T16:36:55 < coon> I still get some errors which could be corrected using hardware error detection i guess. anything above that baudrate will just generate too many errors
2013-06-30T16:40:29 < Robint91> coon, I think the maximum I did was a few 2Mbps to an other onboard chip
2013-06-30T16:41:14 < Robint91> coon, the distance was maybe a few centimeters
2013-06-30T16:42:42 < dongs> 912000 is fine for uart
2013-06-30T16:42:47 < dongs> er 921600 or whatever
2013-06-30T16:42:59 < dongs> better if you have flow control with that
2013-06-30T16:44:27 < coon> i'm using FTDI
2013-06-30T16:44:40 < coon> maybe the chip is not able to do more
2013-06-30T16:45:40 < coon> or the stm32f100rb is too slow for that
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2013-06-30T20:42:56 < Laurence1> http://hackaday.com/2013/06/24/16-core-computer-made-of-atmegas/
2013-06-30T20:43:05 < dongs> great
2013-06-30T20:47:37 < zyp> «Can we mine bitcoins with this?»
2013-06-30T20:58:29 < Laurence1> https://maps.google.co.uk/maps?q=lolworth&hl=en&client=ubuntu&channel=fs&oe=utf-8&gl=uk&hnear=Lolworth,+Cambridgeshire,+United+Kingdom&t=h&z=15
2013-06-30T21:00:49 < Laurence1> im moving back
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2013-06-30T21:04:11 < trepidaciousMBR> What happens to registers when STM32F4 is reset from software?
2013-06-30T21:04:24 < zippe> Depends on what you mean by "reset from software"
2013-06-30T21:04:34 < zippe> Depending on how you reset, they may stay the same or go to the reset values
2013-06-30T21:06:50 < zippe> e.g. if you use SYSRESETREQ in the AIRCR, that will reset the entire device
2013-06-30T21:09:00 < trepidaciousMBR> I'm just working on a bootloader, ideally to give a completely "clean" transfer from the bootloader into application, I want to reset all registers but leave some "flag" for the bootloader to notice on reset and jump straight to the application without initialising any peripherals etc.
2013-06-30T21:09:14 < trepidaciousMBR> I don't know whether those two objectives are mutually exclusive
2013-06-30T21:09:35 < zyp> the registers in the backup domain are not reset by SYSRESETREQ
2013-06-30T21:10:06 < zyp> as far as I'm aware, it's common to use those to achieve what you want to do
2013-06-30T21:10:28 < trepidaciousMBR> Sounds good, I was just looking at the reference manual and hoping that was the case
2013-06-30T21:10:39 < trepidaciousMBR> A system reset sets all registers to their reset values except the reset flags in the clock controller CSR register and the registers in the Backup domain <- sounds ideal
2013-06-30T21:10:54 < Thorn> RAM isn't reset either afaik
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2013-06-30T21:13:45 < trepidaciousMBR> So it looks like I can use RCC_CSR PORRSTF to see if I've just powered on, in which case I will ignore the backup domain, or SFTRSTF if a software reset happened, in which case I expect the backup domain to have some instructions about what to do, and in either case other registers are in default state so I don't need to worry about them from the user application, sounds ideal :)
2013-06-30T21:15:46 < qyx_> there was also something we named "crap data register"
2013-06-30T21:16:07 < qyx_> someone used it to check if reset occured, but that's probably not what you want
2013-06-30T21:17:27 < qyx_> thats actually the exact opposite :P
2013-06-30T21:17:39 < trepidaciousMBR> Looks like it's better to use those RCC_CSR bits, unless they don't actually work?
2013-06-30T21:37:48 < zippe> trepidaciousMBR: if you want to transition "cleanly", turn everything off
2013-06-30T21:38:06 < trepidaciousMBR> How do you mean?
2013-06-30T21:39:13 < zippe> You can turn off the clock and reset all the peripherals
2013-06-30T21:39:50 < zippe> Though, if you're smart you'll just save the RCC register state from when you were started and restore it before you jump to the app
2013-06-30T21:40:35 < zippe> i.e. save all of the RCC_*ENR registers, and restore RCC_CR so that you're running from the HSI before you jump
2013-06-30T21:48:00 < trepidaciousMBR> I'll have a look at that
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--- Log closed Mon Jul 01 00:00:01 2013