• [00:01:00] * qbit_ (qbit@gateway/shell/devio.us/x-ijpbxbhsaeblornk) has joined #beaglebone
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  • [00:05:33] <mranostay> jonmasters_: so you get a flurry of texts? :)
  • [00:07:14] <jonmasters_> it's rate limited :)
  • [00:07:30] * userx- is now known as userx
  • [00:07:30] <jonmasters_> I have an algorithm for that
  • [00:08:04] <mru> let's test it: jonmasters_ jonmasters_ jonmasters_ jonmasters_ jonmasters_ jonmasters_
  • [00:08:29] <jonmasters_> doesn't work like that :)
  • [00:08:49] <jonmasters_> I have to be idle, and it'll screen on nick, and lots of other things. I call it "antiping"
  • [00:09:01] <jonmasters_> it's designed to train people never to do: "jonmasters: ping?"
  • [00:09:15] <jonmasters_> instead, it's to train them to do "jonmasters: here is exactly what I need from you"
  • [00:09:52] <jonmasters_> in that it will, under certain circumstances where you do ping me, reply to you with a polite explanation that "ping" is uselessly wasting my time...except it won't use quite those words
  • [00:10:19] <mru> jonmasters_: I need you to pack all the money in a brown paper bag and place it to the _left_ of the bench by the bus stop at exactly 4:13pm tomorrow
  • [00:11:01] <jonmasters_> well yes, that would be appropriate, if we were engaged in international espionage. But let's talk about that after the white dove flies over the moon's pyjamas.
  • [00:11:12] <jonmasters_> ok?
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  • [00:11:54] <KeatonT> lol
  • [00:12:05] <KeatonT> sounds like a nice away script.
  • [00:13:17] <mranostay> mru: reminds me of my 'friends' that like to send me texts like 'all praise to allah!' when i'm flying
  • [00:13:39] <mru> that's a good idea, I should try that some time
  • [00:14:17] <KeatonT> I'll remember not to log into IRC while using the in-flight wifi.
  • [00:14:19] <KeatonT> :P
  • [00:14:22] <mranostay> all fun and games till someone gets strip searched
  • [00:14:43] <mru> strip searches can be fun and games too
  • [00:15:20] <mru> are these the kind where stripper and strippee are distinct persons?
  • [00:15:44] <mranostay> heh yes
  • [00:16:08] <mranostay> which can be fun in some cases as well
  • [00:16:14] <mru> oh yes
  • [00:25:16] * mru attempts to build latest gcc 4.8 snapshot
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  • [00:27:30] <mru> ICE
  • [00:32:14] <ozzloy> asdf
  • [00:32:24] <ozzloy> lag
  • [00:34:09] <ozzloy> jonmasters_, here is exactly what i need from you: tips and tricks for working with the kinect and beagle{bone,board}
  • [00:37:24] <ozzloy> is the beaglebone rev3 the same as rev5 in terms of hardware?
  • [00:37:35] <XMPPwocky> there was a bug fix with an ethernet LED
  • [00:37:43] <XMPPwocky> but other than that, they're identical
  • [00:37:53] <ozzloy> i thought that was rev4
  • [00:38:16] <ozzloy> or do you mean a software bug fix?
  • [00:38:24] <XMPPwocky> hm, not sure
  • [00:38:36] <XMPPwocky> i know 4 broke something badly and 5 fixed it
  • [00:38:37] <ozzloy> so the rev3 might not blink the ethernet led?
  • [00:38:47] <ozzloy> i can live with that
  • [00:39:33] <ozzloy> XMPPwocky, i just put together your name and rolled my eyes at myself for taking so long to put together your name
  • [00:39:39] <XMPPwocky> hahaha, yeah
  • [00:40:13] * XMPPwocky resets the "days since someone's gotten his name" sign
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  • [01:12:39] <CanyonMan> :-O
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  • [02:11:47] <trelane> where are the analog in/digital out pins in /dev (or /sys)
  • [02:11:52] <trelane> and how do I read/set them?
  • [02:11:56] <trelane> assuming there's a howto somewhere
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  • [02:18:45] <W1N9Zr0> http://www.elinux.org/EBC_Exercise_02_Flashing_an_LED
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  • [03:08:22] <trelane> seem to recall the analog inputs are 1.8v from the penguincon talk, is that correct?
  • [03:10:10] <trelane> apologies referring to the beaglebone above
  • [03:13:12] <W1N9Zr0> http://beagleboard.org/static/beaglebone/a3/Docs/Hardware/BONE_SRM.pdf
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  • [03:21:04] <KeatonT> Where do you get the latest version of the beaglebone OS?
  • [03:22:40] <KeatonT> nvm
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  • [03:51:23] <KeatonT> So anyone care to explain how to install Debian on the beaglebone.
  • [03:51:32] <KeatonT> I'm looking at the elinux wiki.
  • [03:51:43] <KeatonT> without much success in actually understanding what I need to do.
  • [04:00:17] <rcn-ee> KeatonT, well there's two methods.. the netinstall which can only currently instal debian squeeze, or the snapshot image which will give you the current debian wheezy (development)..
  • [04:01:09] <KeatonT> yea rcn-ee what I don't get is how you actually do the installation without a monitor.
  • [04:01:13] <KeatonT> seems silly.
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  • [04:02:04] <rcn-ee> the netinstall has a "--serial-mode" option which will force it to use the serial port..
  • [04:02:39] <KeatonT> ah so like a console really.
  • [04:03:18] <KeatonT> I guess no harm could be done just installing wheezy.
  • [04:03:22] <rcn-ee> yeap, simple console... the debian-installer which is what's doing the work, doesn't care if it's a real framebuffer or a char device such as a seiral port..
  • [04:03:45] <KeatonT> so it would be a terminal shell really.
  • [04:03:47] <rcn-ee> we just have to direct it properly for the intial bootup.. ;)
  • [04:03:48] <bones_was_here> i used the elinux method, i didn't need to do anything more than their instructions to get the serial console installer
  • [04:03:54] <KeatonT> on a tty port
  • [04:04:12] <KeatonT> yea bones_was_here I just wasn't clear on their instructions.
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  • [04:05:07] <rcn-ee> just looked into the source, for the "bone" i actually have it default to serial-mode, so you don't even need that flag on the command line..
  • [04:05:11] <KeatonT> Like the instructions here: http://elinux.org/BeagleBoardDebian don't seem to mention anything about the serial console
  • [04:05:38] <rcn-ee> look again, it's under Options..
  • [04:06:12] <rcn-ee> i just don't scrictly say .. "with the beaglebone, this installer uses the serial-mode by default"
  • [04:06:33] <KeatonT> ah
  • [04:07:19] <KeatonT> So you'd run these scripts from another linux computer with the beagle bone connected via usb
  • [04:08:07] <rcn-ee> yes, you run the script once (on any linux platform) to setup the sd card... Then you move the newly formated sd card to the bone and boot...
  • [04:08:29] <KeatonT> or you could do it over serial
  • [04:08:31] <KeatonT> right?
  • [04:09:19] <bones_was_here> you need a way to boot the installer
  • [04:10:01] <rcn-ee> there's two parts.. the scripts to create the sd card.. (which must be run on any linux computer, already running linux)... the scripts on the sd card (debian-installer) which you'll run on a bone, connected to the ethernet by some medium and it's connected to your other pc via the serial cable..
  • [04:10:43] <KeatonT> ah I see.
  • [04:11:27] <KeatonT> how would I go about connecting to the Debian installer over serial ?
  • [04:12:23] <rcn-ee> there's a usb-serial adapter on the bone... so you'd plug that port into your pc.. then open gtkterm or any other working serial terminal program..
  • [04:12:34] * Maxz (~felipe@201-246-50-162.baf.movistar.cl) Quit (Quit: leaving)
  • [04:14:05] <KeatonT> ah screen command on mac
  • [04:14:06] <KeatonT> :P
  • [04:15:19] <bones_was_here> if you cant create the sd from the mac you can probably do it from the beagle's angstrom with a usb sd adapter
  • [04:15:22] <rcn-ee> in that case with the mac, you'll need the beaglebone usb-serial driver too... Not sure on those steps..
  • [04:15:55] <rcn-ee> i'm working with another user on that... currently the script can't handle a mac.. (mktemp, parted, fdisk differences)
  • [04:16:26] <KeatonT> the screen command should still work on like a linux Debian install correct?
  • [04:16:58] <rcn-ee> it should, screen is pretty univeral.. i just always use gtkterm..
  • [04:18:54] <KeatonT> yea does Debain need the beaglebone usb-serial driveR?
  • [04:18:58] <KeatonT> driver*
  • [04:20:12] <XMPPwocky> i like that you corrected the capitalization, but not Debain
  • [04:20:16] <bones_was_here> the kernel you flash onto the sd with the script seems to have a driver that works
  • [04:20:36] <KeatonT> XMPPwocky I didn't notice and autocorrect on Lion is a bitch.
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  • [04:22:17] <XMPPwocky> heh
  • [04:22:18] <rcn-ee> KeatonT, i know it's in 3.4-rc6. ;) don't remember when it went mainline, otherwise the udev rules to make it work is here: http://beagleboard.org/static/beaglebone/latest/README.htm
  • [04:22:46] <KeatonT> ah yea
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  • [06:30:53] <koen> dwery: how do you test a CAN bus?
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  • [06:31:14] <koen> dwery: someone mentioned nternal loopback, but I have no idea how to test that with canutils :)
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  • [06:41:11] <_av500_> koen: you have a car, no?
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  • [06:43:53] <strata> i'm getting a beaglebone this week. i'm assuming reading the the state of various i/o pins is accomplished via gpio files exposed by linux kernel?
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  • [06:45:38] <strata> also, according to reference manual, you can hook up a usb keyboard/mouse. will usb mass storage also work then?
  • [06:51:01] <aholler_> by sending something and check the received stuff?
  • [06:51:08] * aholler_ is now known as aholler
  • [06:54:10] <koen> _av500_: but the gf is using it for work
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  • [07:31:25] <av500> koen: there are weekends and evenings
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  • [07:32:47] <aholler> someone must have pressed the boss button
  • [07:34:09] <LetoThe2nd> no, it was an electrolytic cap.
  • [07:34:24] <aholler> hmm, thats a good idea for a funny boss-puppet. ;)
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  • [07:39:13] <LetoThe2nd> halt
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  • [07:48:31] <aholler> my patent application: http://ahsoftware.de/ThereAreWeekendsAndEvenings.png
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  • [07:53:43] <koen> aholler: did your LED patch get into mainline yet?
  • [07:53:53] <aholler> nothing heard
  • [07:55:01] <aholler> but I don't know if I will get more notifications besides those from akpm
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  • [07:55:51] <aholler> I assume they might end up in 3.5
  • [07:56:25] <koen> akpm takes care of LEDs nowadays
  • [07:56:38] <koen> RP lacks the time to look after it
  • [07:57:10] * koen applies v4
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  • [08:11:52] <av500> koen: execve("/home/koen/setup-scripts/build/tmp-angstrom_2010_x-eglibc/sysroots/x86_64-linux/usr/bin/m4"
  • [08:13:02] <okay> hello
  • [08:13:22] <koen> av500: yeah, there are still a number of those
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  • [08:24:14] <Borillion> I want to build an audio daughterboardm I undestand how to do it, but I see it has audio data format tables and audio interface timing requirements. http://www.ti.com/litv/pdf/sbas551 Aren't these things set by software?
  • [08:26:32] <aholler> CONFIG_SND_PCSP ;)
  • [08:26:42] <av500> Borillion: they are
  • [08:28:40] * Borillion (~Borillion@adsl-76-254-59-126.dsl.pltn13.sbcglobal.net) Quit (Ping timeout: 255 seconds)
  • [08:29:24] <aholler> koen: thats all I know: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fnext%2Flinux-next.git&a=search&h=HEAD&st=grep&s=leds.*heartbeat.*stop&sr=1
  • [08:29:57] <aholler> thats v4 + 1 empty line
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  • [08:33:33] <koen> aholler: ok, I'll keep v4 and replace it with the final one when it goes into linus' tree
  • [08:34:56] <aholler> for one patch I had to wait half a year ;)
  • [08:35:11] <aholler> or more, can't remember ;)
  • [08:35:33] <av500> its all fucked up
  • [08:36:08] <aholler> hehe, true, it rested that long in his patch-queue ;)
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  • [08:36:58] <dwery> koen: you connect it to a known working bus, at different speeds
  • [08:37:16] <dwery> I guess the other can cape is ready to market ;)
  • [08:37:48] <av500> can a can cape can can?
  • [08:39:08] <dwery> sure it can!
  • [08:39:14] <av500> can it!
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  • [08:43:57] <aholler> koen: if the hw supports loopback you could use ip link set can0 type can loopback on
  • [08:44:34] <koen> dwery: I have a few linux CAN capable devices, but no idea on how to properly interface them and communicate between them :)
  • [08:44:55] <aholler> two cable and two resistors
  • [08:45:48] * TheAlphaNerd (~thealphan@unaffiliated/thealphanerd) Quit (Quit: TheAlphaNerd)
  • [08:49:28] <aholler> it's like a serial, the resistors are because it's a bus (termination).
  • [08:50:22] <av500> when a bus terminates, the drivers drinks coffee...
  • [08:51:30] <Borillion_> LOL
  • [08:55:24] <phh> well, termination is only if you need high rates
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  • [08:57:36] <dwery> phh: always properly terminate, or your _will_ get in trouble
  • [08:58:45] <dwery> koen: aholler is right
  • [08:59:10] <dwery> you can use the tt3201 and turn on the embedded resistor with the dip switch
  • [08:59:14] <dwery> and save one resistor :D
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  • [09:03:34] <phh> dwery: yeah sure ..
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  • [09:32:47] <htns> hi, is there a recommended way to verify NAND flash, I'm seeing one beagleboard RevC exhibiting problems with NAND (continuous ubifs CRC errors despite repeated full nand erase and reflash) whereas the other boards are okay (ubifs works fine)
  • [09:33:51] <aholler> don't forget to set the correct method for crc (sw)
  • [09:34:39] <av500> aholler: nonsense
  • [09:34:43] <aholler> no
  • [09:35:26] <av500> you can use the same method the rom code uses
  • [09:35:37] <av500> what is called "hw" IIRC
  • [09:35:44] <aholler> no
  • [09:35:52] <av500> well, we did
  • [09:35:52] <aholler> hw-ecc is broken
  • [09:36:06] <aholler> or was, don't if that got fixed
  • [09:36:13] <aholler> +know
  • [09:36:18] <av500> at least kernel and boot loader used the same
  • [09:36:30] <av500> not that stupid, kernel cannot write nand for uboot crap
  • [09:36:57] <htns> yup, i'm aware of the ecc issues. what i'm saying is that a procedure that works on multiple other beagleboard RevCs is failing on one single board
  • [09:37:07] <av500> hw ecc is broken on omap anyway, they keep on putting to few ecc bits
  • [09:37:13] <aholler> and nand erase does different things. Don't remember, but I think there is something like erase full
  • [09:37:17] <av500> for high capacity nand
  • [09:37:33] <htns> suggests to me that there is something damaged on this particular board, i'm looking for a way to verify the nand in u-boot, something like a random read/write test
  • [09:37:42] <av500> htns: I doubt you can do much more than erase every block
  • [09:38:03] <av500> then write a pattern and check for it
  • [09:38:15] <htns> yup, did that in u-boot, reflashed whole layout
  • [09:39:01] <htns> i guess i could look at the ubifs crc errors and try to work out which page in nand
  • [09:39:52] <aholler> I remember that I had problems when I erased the nand with having the wrong ecc type set. u-boot hasn't erased the oob-data correctly or such.
  • [09:40:19] <aholler> which resulted in exactly the problem you have
  • [09:40:28] <htns> oh, that's interesting
  • [09:40:57] <aholler> but thats two years ago or so. so my memories might be wrong. ;)
  • [09:41:18] <htns> ok, will check on that, i had assumed that nand erase whole flash would mean ecc is not relevant
  • [09:41:32] <htns> odd that it would only be exhibited on one board
  • [09:42:21] <av500> htns: arent you past beagleboards now?
  • [09:43:15] <htns> av500, nope :-)
  • [09:43:50] <av500> what, your mokoboards dont work?
  • [09:44:14] <htns> i'm not familiar with mokoboards, what are those?
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  • [10:39:52] * koen looks at http://www.sparkfun.com/products/10087
  • [10:40:28] <educa> Want to interface to a car?
  • [10:43:39] <koen> the car seems to be the only can device around that's actually usefull to test on
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  • [10:50:08] <educa> @koen, indeed
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  • [10:56:55] <symbole> I'm trying to light up gpio 149 on my beagleboard xm, and I'm reading the manual about which physical address to write to from my C code. I'm a little bit confused how to interpret the manual though. It says that the register name is CONTROL_PADCONF_UART1_TX[31:16], and the physical address is 0x4800217c. Does that mean if I write 0xFFFF into 0x4800217c, the LED lights up? It seems to ligh up even when I write 0x0000.
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  • [11:00:18] <__av500__> koen: so you will totally need: http://www.pollin.de/shop/dt/MjE5OTgxOTk-/Bausaetze_Module/Bausaetze/Bausatz_SUB_D_Anschlussplatine.html
  • [11:00:24] * __av500__ is now known as av500
  • [11:02:12] <aholler> hehe, I have such a thingy ;)
  • [11:02:25] <av500> I will have one soon
  • [11:03:38] <aholler> they have the big-brother with 25pins too.
  • [11:03:47] <symbole> Ah, I had the wrong mode setup for the registers.
  • [11:04:25] <av500> aholler: yep
  • [11:04:40] <av500> aholler: we also ordered that 6??? mips platform
  • [11:04:56] <aholler> hmm, don't know that, must be new
  • [11:05:56] <av500> http://www.pollin.de/shop/dt/NzQ5OTA2OTk-/Bausaetze_Module/Module/Receiver_Mainboard_mit_Twin_DVB_T_Tuner.html
  • [11:06:46] <aholler> uh, no.
  • [11:07:53] <av500> there a cable version too
  • [11:08:16] <koen> av500: I have a can board with db9 already :)
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  • [11:09:24] * bradfa is confused by 6 euro mips board...
  • [11:09:37] <aholler> av500: but thats too much friggel for me ;)
  • [11:09:48] * nickjohnson (u789@gateway/web/irccloud.com/x-fsrqjedlywmoziiz) Quit (Ping timeout: 252 seconds)
  • [11:10:27] <aholler> have enough electronic scrap here ;)
  • [11:11:32] <av500> aholler: somebpdy else here want to frickel it
  • [11:11:42] <av500> so I just +1 the order
  • [11:11:49] <av500> yes, most likely scrap heap
  • [11:12:00] <aholler> I doesn't like to desoldier stuff.
  • [11:12:20] <av500> or desolder
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  • [11:12:56] <aholler> aeh, yes. ;)
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  • [11:17:36] <jannau> av500: that one is not new, pollin is selling that for at least a year
  • [11:18:00] <av500> jannau: I did not say new
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  • [11:19:29] <jannau> and it'll most likely get to the scrap heap, I still have one mostly untoched since a year
  • [11:20:27] <av500> as said, I only ordered coz coworker want to do something on it
  • [11:20:47] <av500> I dont even find the time atm to write an ir controller on a MSP....
  • [11:21:39] * errordeveloper (~ilya@host86-149-173-89.range86-149.btcentralplus.com) Quit (Ping timeout: 265 seconds)
  • [11:22:32] <aholler> get an usb infrared toy ;)
  • [11:22:42] <jannau> I wanted to use them as network dvb-c receivers but never got further than setting up a nfs root fs for it
  • [11:23:19] <av500> aholler: I need to replace a lost remote
  • [11:23:26] <av500> usb not an option
  • [11:24:10] <aholler> ah, then just an avr. all sw ready ;)
  • [11:24:15] <jannau> a cheap universal remote is not an option?
  • [11:24:39] <av500> jannau: I dont have a remote to copy
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  • [11:24:46] <av500> but I have the protocol and codes
  • [11:25:07] <av500> aholler: avr is another guy here in the office
  • [11:25:18] <av500> we have a PIC-man and an avr dude
  • [11:25:35] <aholler> specialization at it's best
  • [11:25:42] <av500> so I try to be the MSP pro
  • [11:26:12] <av500> yes, we do have fun discussions
  • [11:28:22] * zer4tul (~zer4tul@unaffiliated/zer4tul) Quit (Quit: WeeChat 0.3.7)
  • [11:29:17] <jannau> av500: is it an exotic device? otherwise even the cheap remotes come with enough predefined protocol/code sets
  • [11:29:29] <av500> jannau: a roboraptor
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  • [11:30:21] <jannau> the computer programable universal remotes from logitech are unfortunately prohibitive expensive
  • [11:30:29] <av500> yep
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  • [11:32:07] <aholler> I'm still searching for a ruggedized keyboard which isn't too pricey to build an all in-one-remote which is water-resistant
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  • [11:32:58] <av500> watch tv in bathtub much?
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  • [11:34:37] <aholler> something like that: http://www.tastaturen.com/ergebnis.lasso?-session=shop:57B209ED0c61820873Lnl23ED314&f=vandal&vo=d&mr=1&sr=7
  • [11:36:54] <av500> don't invite vandals....
  • [11:38:03] <aholler> should be for my father, he is a specialist in dumping coffee over remotes
  • [11:39:44] <av500> http://www.tastaturen.com/ergebnis.lasso?-session=shop:57B209ED0c61820873Lnl23ED314&a=industrie&p=Nummernblock&e=wasserdicht&vo=d&mr=1&sr=13
  • [11:40:20] <aholler> keyword was "not to pricey" ;)
  • [11:40:55] <av500> keyboard: ???4,95 clear plastic bag: ???0,10
  • [11:41:19] <av500> Son, wtf? - priceless
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  • [11:53:59] <Crofton|work> I've been reading a moronix article and need to de-stupid myself
  • [11:54:35] <Crofton|work> The big difference with armhf api is that you can use neon regs to return fp values from functions, correct?
  • [11:55:20] <av500> pass and return
  • [11:55:44] <Crofton|work> ok
  • [11:55:47] <Crofton|work> that makes sense
  • [11:56:09] <Crofton|work> and I think I can return a complax float value (64 bits) in a NEON reg
  • [11:56:10] <av500> the problem is that people compare vfp+hf with no-vfp and soft
  • [11:56:15] <Crofton|work> right
  • [11:56:26] <av500> instead of vfp+soft vs vfp+hard
  • [11:56:37] <av500> so suddenly debian is 500% faster
  • [11:56:40] <Crofton|work> I just need to make sure I say the right stuff in case I end up in a room full of stupid people
  • [11:57:01] <av500> aholler did the becnhmark once for A8
  • [11:57:01] <Crofton|work> I assume ubuntu 12.whatever still oesn't compile anything with NEON on
  • [11:57:01] * ppotera (~ppotera@99-100-130-116.lightspeed.stlsmo.sbcglobal.net) Quit (Quit: ppotera)
  • [11:57:07] <aholler> get a buzz-word-collection
  • [11:57:34] <av500> Crofton|work: no idea, does ubuntu use armcc now? :)
  • [11:57:40] <Crofton|work> heh
  • [11:57:47] <mru> Crofton|work: afaik, no
  • [11:58:14] <av500> mru: aint you on vacation?
  • [11:58:15] <mru> Crofton|work: also, a complex float value is returned in regs without neon too
  • [11:58:31] <mru> av500: it's a bank holiday here, yes
  • [11:58:52] * av500 thought you in protugal
  • [11:58:59] <mru> that was last weekend
  • [11:59:15] <av500> back to luton then
  • [11:59:19] <mru> heh
  • [11:59:23] <Crofton|work> hmm, so flaot comes back in NEON
  • [11:59:25] <aholler> the m in mru is for mobile?
  • [11:59:32] <Crofton|work> but returning two floats does not
  • [11:59:45] <mru> aholler: I'm not going anywhere for another 2 weeks
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  • [12:00:29] <aholler> like stewards, they get a week free for every week they work ;)
  • [12:03:26] <mru> Crofton|work: are you using 'complex float' type?
  • [12:04:59] <av500> I think he meant complex number like these with a lot of digits
  • [12:05:11] <av500> 1.56893798576857
  • [12:05:14] <mru> ah, like higher than 9
  • [12:05:25] <av500> yes, many and many many
  • [12:07:36] * ppotera (~ppotera@99-100-130-116.lightspeed.stlsmo.sbcglobal.net) Quit (Quit: ppotera)
  • [12:11:14] <koen> + 5ed25c3120ef7160e8cd171ba73e478e083d847a linux-ti335x-psp 3.2: add patch to disable heartbeat LED trigger on shutdown
  • [12:11:18] <koen> there we go
  • [12:11:19] * risca (~risca@wnpgmb0903w-ds01-249-233.dynamic.mtsallstream.net) Quit (Quit: L??mnar)
  • [12:13:22] <av500> \o/
  • [12:13:36] <Crofton|work> mru, I just know of cases that might return it
  • [12:16:29] <aholler> does android already use hardfloat?
  • [12:16:44] <mru> Crofton|work: well, complex float should be returned in s0/s1
  • [12:17:18] <Crofton|work> ok
  • [12:17:22] <Crofton|work> I thought so
  • [12:17:39] <mru> and a quick test confirms that gcc does this
  • [12:17:54] <av500> aholler: nope
  • [12:17:56] <av500> and cant
  • [12:18:03] <av500> due to backwards compat
  • [12:18:04] <aholler> old gcc?
  • [12:18:11] <av500> old ABI
  • [12:18:27] <Crofton|work> I doubt it is a huge concern for Android
  • [12:18:29] <av500> all the native libs
  • [12:18:44] <av500> and no pressure to switch
  • [12:18:47] <Crofton|work> I seriously doubt there are meny functions that use floating point
  • [12:19:00] <Crofton|work> and are performance critical
  • [12:19:03] <aholler> is there so many native stuff around? I thought thats all java-foo
  • [12:19:08] <av500> aholler: no
  • [12:19:10] <av500> a lot of games
  • [12:19:29] <mru> sane code does not suffer from softfloat abi
  • [12:19:41] <av500> aholler: and you cannot force all the karteileichen from google market to recompile...
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  • [12:34:07] <aholler> av500: if you want to become a msp hero, write a bitbanging usb-client lib ;)
  • [12:35:55] <aholler> the only problem would be to be faster than the hw gets cheaper ;)
  • [12:42:22] <mdp> bitbang usb3 in javascript
  • [12:42:53] <aholler> first you are in need of an logic-analyzer for that ;)
  • [12:43:19] <mdp> for extra credit, do it with an emulated arm on any 8-bit uC
  • [12:45:35] <aholler> normal priced stuff to sniff usb is now just able to sniff usb 1.x.
  • [12:45:57] <av500> nah, 2.0 sniffs fine
  • [12:46:07] <mdp> *sniff*
  • [12:46:46] <mdp> aholler, you mean dirt-cheap stuff I guess :)
  • [12:47:58] <av500> prolly just LEDs on the D+ and D- lines...
  • [12:48:04] <av500> and pen and paper
  • [12:48:10] <aholler> for 2.x you need about 1 GHz
  • [12:49:18] <mdp> sure, that's why we typically purchase a dedicated piece of test equipment these days
  • [12:49:44] <av500> a multimeter?
  • [12:49:55] <mdp> exactly!
  • [12:50:03] <av500> heh, somebody is taking my job on the mailing list
  • [12:50:32] <mdp> av500, the pay still sucks, don't feel bad
  • [12:52:39] <aholler> usb 3.x just got invented so that nobody can prove all the hw-failures in usb-chips through printouts from analyzers.
  • [12:53:54] <mdp> ooohh
  • [12:54:05] * mdp finds a hidden gem amongst all the list noise
  • [12:55:10] <mdp> exciting detailed gpmc burst mode questions???mmm
  • [12:55:30] <mru> burst of gpmc questions
  • [12:55:31] <av500> also a submarine surfaced
  • [12:55:35] * rcn-ee (~voodoo@thief-pool2-123-49.mncable.net) Quit (Quit: Leaving)
  • [12:55:43] <mdp> running U-Boot?
  • [12:55:45] <av500> a SUBARCTIC one
  • [12:55:50] <mdp> heh
  • [12:56:32] <av500> I think TI needs one more website
  • [12:56:41] <av500> timarketingnames.com
  • [12:59:21] <mdp> it was funny that some folks in panda land internally *just* discovered http://pandaborad.org last week
  • [12:59:33] <mdp> humorous conversation after that
  • [12:59:35] <koen> heh
  • [12:59:50] <koen> I thought that meme was spread far and wide enough already
  • [13:00:18] <mdp> many people don't have contact with "The Community(???)"
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  • [13:00:50] * mdp queues ominous music
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  • [13:02:33] <prpplague> mdp: it was pretty well known to the core panda folks
  • [13:03:57] <aholler> ti is in need of ???, just with an i instead of an m ;)
  • [13:04:39] <mdp> prpplague: I'm sure
  • [13:05:08] <mdp> prpplague: btw, I'm testing the fix that stevek isolated for the serial issue
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  • [13:12:33] <Crofton|work> (int((unsigned char)(input1.imag() * 128)))
  • [13:12:48] <Crofton|work> so, for input1.imag() < 0 this returns 0
  • [13:12:53] * ppotera (~ppotera@99-100-130-116.lightspeed.stlsmo.sbcglobal.net) Quit (Quit: ppotera)
  • [13:12:55] <Crofton|work> on armv7 machine
  • [13:13:00] <Crofton|work> using gcc 4.5
  • [13:13:06] <Crofton|work> but a neg number on x86
  • [13:13:09] <Crofton|work> who is wrong
  • [13:13:33] <mru> undefined behaviour
  • [13:13:44] <Crofton|work> got a reference?
  • [13:13:47] <mru> converting a floating-point value to an integer type that can't represent the value is undefined
  • [13:13:53] <mru> C99 6.3.1.4
  • [13:14:00] <Crofton|work> you are awesome
  • [13:14:17] <thurbad> heh
  • [13:14:32] <mru> arm float to int conversion instructions saturate
  • [13:14:38] <mru> the x86 ones do not
  • [13:14:54] <prpplague> mdp: dandy
  • [13:14:58] * prpplague is now known as prp^2
  • [13:15:04] <Crofton|work> I am dealing with the "compiler bug" argument
  • [13:15:22] <mru> there's a bug alright, but it ain't in the compiler
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  • [13:28:47] <mdp> prp^2: yeah, so verified I can make it work on both FS2 and BDI now???looking at the proper fix for spl
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  • [13:36:51] <mru> hmm, what's uImage-2.6.26-rc4-omap doing on my disk?
  • [13:37:20] <av500> it's a virus
  • [13:37:23] <oyv> Hi. Does anyone know where I can find information about maximum operating temperature for the beaglebone? I cannot find it in the reference manual..
  • [13:37:33] <jannau> successfully hiding until now
  • [13:37:53] <mru> av500: indeed, it seems to have replicated and evolved to 3.3 and beyond
  • [13:38:16] * erwin_schaefer (2edacd4e@gateway/web/freenode/ip.46.218.205.78) has joined #beagle
  • [13:38:16] <erwin_schaefer> Hello all
  • [13:38:28] <mru> hmm, and here's some nda'd pdf
  • [13:38:56] <av500> nda = no doubt awesome?
  • [13:39:26] <mru> oh, it's a draft of beagle c1 schematics
  • [13:39:39] * mru does not recall signing any nda for that...
  • [13:39:59] * SilicaGel Do Not Eat
  • [13:40:38] <erwin_schaefer> I've connected the Chronodot 2.1 (DS3231 RTC) to the beaglebone. It keeps the date/time quite well. However, although it synchronizes well from the DS3231 RTC to the hardware clock at boot, when I launch "date" after logging, the date is in 2035. Did someone run into this kind of issue?
  • [13:43:30] <mru> not since I was working on that time machine
  • [13:44:24] <koen> erwin_schaefer: is it set as rtc0 and is the kernel configured to use rtc0 ?
  • [13:47:10] <erwin_schaefer> koen: the ds3231 is set to /dev/rtc0, and the internal RTC is set to /dev/rtc1. However, I do not know how to check whether the kernel uses either rtcx.
  • [13:49:03] <erwin_schaefer> However, I had this at boot: [ 2.265045] rtc-ds1307 2-0068: setting system clock to 2012-05-04 13:20:27 UTC (1336137627)
  • [13:49:16] <erwin_schaefer> (the other day)
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  • [13:50:25] <jannau> erwin_schaefer: CONFIG_RTC_HCTOSYS_DEVICE
  • [13:51:08] <jannau> but it looks like it is set to rtc0 / ds1307
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  • [13:54:59] <erwin_schaefer> Yes, CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
  • [13:57:19] <erwin_schaefer> Also, I had hwclock.sh start as an init script. This script echoes "System local time is `date`" in its execution. And there, the displayed date (obtained with hwclock --hctosys) is correct!
  • [13:57:22] <jannau> erwin_schaefer: anything rtc related in dmesg after rtc-ds1307 2-0068: setting system clock to 2012-05-04 13:20:27 UTC
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  • [13:58:22] <mdp> prp^2: interesting, this is a generic warm reset issue on 36xx: http://e2e.ti.com/support/dsp/omap_applications_processors/f/447/t/97163.aspx
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  • [13:59:37] <erwin_schaefer> jannau: no. (I've just rechecked after rebooting the beaglebone)
  • [13:59:51] <mru> oh, the things hiding in this forgotten directory...
  • [13:59:57] * mru finds the old sector63 patch
  • [14:00:39] <av500> put it in area51/
  • [14:03:33] <mdp> .../hanger18/
  • [14:04:24] <jannau> erwin_schaefer: is the offset between the 2035 date and the current date always the same? does it occur without the hwclock.sh init script
  • [14:04:37] <LetoThe2nd> ..."warhouse13"
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  • [14:05:08] <jannau> compare it to hwclock -f /dev/rtc[01]
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  • [14:12:05] <erwin_schaefer> jannau: hwclock -f /dev/rtc0 = Mon May 7 14:11:29 2012 0.000000 seconds
  • [14:12:09] * errordeveloper (~ilya@static-93.158.79.70.got.public.icomera.com) Quit (Ping timeout: 252 seconds)
  • [14:12:26] <erwin_schaefer> jannau: date = Sun Aug 12 04:52:58 UTC 2035
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  • [14:17:02] <erwin_schaefer> jannau: in fact, date seems to be Sun Aug 12 04:52:04 no matter what just after booting (according to my screenlogs of May 4th, it was the same that day)
  • [14:18:20] <jannau> hwclock -f /dev/rtc1 ?
  • [14:18:56] <jannau> so something sets the system time to 'Sun Aug 12 04:52:58 UTC 2035' and it's not rtc0
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  • [14:20:54] <erwin_schaefer> jannau: on this kernel build, I had removed /dev/rtct1 (internal processor RTC).
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  • [14:23:33] <erwin_schaefer> jannau: If I put back the internal RTC, hwclock -f /dev/rtc1 gives after boot : Sat Jan 1 00:00:50 2000 0.000000 seconds
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  • [14:25:19] <jannau> ok, internal clock is no to blame then. no idea. has /var/log/messages timestamps? look when timestamps jump
  • [14:25:21] <ZeroDegrees> Has anyone here designed an OS for the Board
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  • [14:26:12] <jannau> try to login with a different user/ not root
  • [14:28:43] <bugraaydogar> Hi, guys beaglebone does not boot with toshiba uSD/MMC, it just boots with own uSD/MMC which comes with Bone, does anyone know why?
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  • [14:34:56] <erwin_schaefer> jannau: same result with another user as root. I'm under Angstrom, apparently there's no "messages" in /var/log and can't find an immediate equivalent. dmesg output is not timestamped either and I can't seem to change this with busybox's dmesg options....
  • [14:35:50] <koen> erwin_schaefer: journalctl
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  • [14:37:40] <erwin_schaefer> koen: thanks, koen!
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  • [14:41:26] * stuk_gen hate how many space angstrom require for building >_<
  • [14:43:00] <erwin_schaefer> jannau: well, it was a nice advice.
  • [14:43:34] <erwin_schaefer> Aug 12 05:11:00 beaglebone connmand[122]: connmand[122]: Connection Manager ver sion 0.79
  • [14:43:45] <erwin_schaefer> Aug 12 05:11:00 beaglebone load-timestamp.sh[112]: Update systemtime from /etc/ timestamp
  • [14:44:55] <koen> erwin_schaefer: -a to stop it from cutting off at 80 chars
  • [14:45:22] <koen> erwin_schaefer: and try 'rm /etc/timestamp'
  • [14:45:43] <mranostay> ah monday's i love them
  • [14:47:32] <erwin_schaefer> koen: yes, i did a journalctl -a (copy/paste from screen...)
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  • [14:51:56] <erwin_schaefer> koen: when I remove /etc/timestamp and reboot, it comes back.
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  • [14:52:24] <koen> with the correct time, right?
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  • [14:54:49] <prpplague> koen: darn i am getting old, there was something i needed to ask you and now i have forgotten what it was
  • [14:54:52] <prpplague> koen: :(
  • [14:55:02] <koen> welcome to my life
  • [14:55:17] <koen> prpplague: my theory is that hair keeps thoughts inside your head
  • [14:55:21] <erwin_schaefer> koen: no! With "Aug 12 05:20:00 beaglebone load-timestamp.sh[107]: Sun Aug 12 05:20:00 UTC 2035"
  • [14:55:22] <prpplague> koen: hehe
  • [14:55:24] <koen> prpplague: go bald, and they start escaping
  • [14:55:37] <prpplague> koen: yea i have grown more reliant on notebooks
  • [14:56:02] <koen> erwin_schaefer: so the question is: is 2035 in /etc/timestamp, and if so, how does it get there?
  • [14:57:34] <prpplague> koen: oh i remember now, i need to check with you to see if we can make sure that devmem2,fb-test, read-edid, and fbi are added to the Narcissus options
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  • [15:01:09] <erwin_schaefer> koen: yes, it seems that /etc/timestamp maps to Aug 12 2035: 081205202035
  • [15:01:37] * ka6sox is now known as zz_ka6sox
  • [15:02:24] <koen> erwin_schaefer: what does 'date -u +%2m%2d%2H%2M%4Y' return (after you fix the date)
  • [15:02:24] <erwin_schaefer> koen/jannau: I've no idea how it gets there, but I'll try to figure out what happens now that you helped me out narrowing the issue. Thank you very much for your help!
  • [15:03:34] <erwin_schaefer> koen: 081205342035 (obviously 14 mins since I booted the beaglebone)
  • [15:04:12] <koen> erwin_schaefer: ntpdate -b pool.ntp.org ; load-timestamp.sh --save
  • [15:04:22] <prpplague> koen: i assume there is a mailing list or something to submit patches for Narcissus?
  • [15:04:24] <koen> that should put the correct date in
  • [15:05:05] <koen> prpplague: yes, the angstrom-distro-devel list
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  • [15:07:47] <dwery> erwin_schaefer: please let me know if you find any issue with the RTCs, I'm the subsystem maintainer
  • [15:07:51] * dwery hides...
  • [15:07:54] <prpplague> koen: ahh ok
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  • [15:14:22] <erwin_schaefer> dwery: thanks! But it looks like the drivers / kernel options related to the RTC I'm using work OK. I'm looking at the load-timestamp.sh script, and it seems to be the problem.
  • [15:15:19] <dwery> great :D
  • [15:16:38] * aleek (~aleeksand@knot596.eti.pg.gda.pl) has joined #beagle
  • [15:16:48] <aleek> hello!
  • [15:17:11] <aleek> is it normal, that in 5 boots, I had 3 kernel panics?:D (-xM rev C)
  • [15:17:40] <aleek> Ive just opened the package, plugin the rs232 and power supply to usb-otg
  • [15:20:44] <stuk_gen> aleek: same to me i can't use power from 5v and usb otg :)
  • [15:21:40] <dwery> aleek: absolutely not
  • [15:21:49] <dwery> you should get 5 panics for 5 boots!
  • [15:21:51] <dwery> :D
  • [15:22:34] <erwin_schaefer> koen: since load-timestamp.sh checks if date</etc/timestamp, and if so sets the date with the /etc/timestamp value, the only way was to set /etc/timestamp with a smaller date. That solves the issue, indeed!
  • [15:25:22] <erwin_schaefer> koen: well, thank you. Knowing now how to access detailed journal info (through journalctl) will help me address further issues by myself, hopefully.
  • [15:26:22] <erwin_schaefer> koen: thanks again for your precious time. Have a nice day.
  • [15:27:04] <aleek> dwery: :D
  • [15:27:23] <thurbad> aleek don't use otg for power and see if you're still getting panics
  • [15:27:38] <aleek> dont have power supply yet :D
  • [15:28:15] <aleek> but I can sacrifice one cable and remove data pins from it
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  • [15:33:40] <aleek> ok, working
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  • [15:35:19] <aleek> hehe, gnome :D
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  • [15:48:34] <prpplague> fyi, for anyone interested in lcd panels for beagle, tincantools now has lvds lcd kits in stock - http://tincantools.com/product.php?productid=16165&cat=0&page=1&featured
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  • [15:49:03] <aleek> damn, I have power supply with this plug, but with 12V :/
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  • [16:17:17] <xxiao> played with tizen this weekend, not sure what's the point of that project, a browser + html5, but i can run browser on angstrom/yocto just fine
  • [16:17:48] <av500> to your room, no supper for you!
  • [16:18:18] * stuk_gen (~quassel@151.65.14.50) Quit (Remote host closed the connection)
  • [16:18:26] <xxiao> i ate alone in tizen channel, indeed
  • [16:18:37] <xxiao> not fun
  • [16:18:42] <mdp> cold porridge
  • [16:19:36] * agmlego (~agmlego@lug.mtu.edu) Quit (Ping timeout: 272 seconds)
  • [16:19:55] * av500 heard tizen devs love to play "WAC a mole"
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  • [17:19:31] <damian0815> hi #beagle, i'm trying to access GPIO via sysfs. writing works fine but reading only ever returns 0. any hints?
  • [17:24:55] * jay6981 (~Adium@204.11.231.77) has joined #beagle
  • [17:25:18] <damian0815> i have triple-checked the mux conditions, have tried both pull-up and pull-down
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  • [17:27:29] <kkeller> did you set direction of the pin?
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  • [17:29:38] <damian0815> kkeller: yes
  • [17:31:28] <kkeller> this example works on bbone or bboard??? http://elinux.org/GPIO
  • [17:31:30] <Russ> what is the pin connected to?
  • [17:32:46] * jay6981 (~Adium@204.11.231.77) Quit (Ping timeout: 250 seconds)
  • [17:32:57] <damian0815> Russ: directly to 1.8v on expansion header
  • [17:33:11] <Russ> and from there?
  • [17:33:35] <damian0815> sorry, what?
  • [17:33:51] <damian0815> as i said i've tried using both pull-up, pull-down and no pull-either-direction resistors
  • [17:34:06] <damian0815> shorting the pin to both gnd and +1.8v in all conditions (so 6x tests)
  • [17:34:06] <Russ> so you are connecting it to a resistor
  • [17:34:12] <damian0815> whatever i do i get 0 on the value
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  • [17:34:35] <kkeller> damian0815: A "HIGH" is 3v not 1.8v
  • [17:35:02] <Russ> is it board or bone?
  • [17:35:02] <damian0815> on the beagleboard, i was under the understanding that the expansion header was connected directly to the CPU so had a limit of 1.8v
  • [17:35:05] <damian0815> board
  • [17:35:06] <damian0815> c4
  • [17:35:11] <Russ> kkeller, you are thinking of bone
  • [17:35:19] <kkeller> oh??? yes was thinking bone
  • [17:35:25] <Russ> damian0815, what does the line in /sys/kernel/debug/gpio look like?
  • [17:35:36] <damian0815> checked already. it's mode4, should be correct.
  • [17:35:55] <damian0815> like i said, output works: set direction to out, write 1 to value, see 1.8v on the pin; write 0 to value, see 0v on pin. works.
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  • [17:36:52] <Russ> o_O?
  • [17:36:58] <damian0815> jah
  • [17:36:59] <damian0815> :-)
  • [17:37:07] <Russ> /sys/kernel/debug/gpio says "mode4"?
  • [17:37:16] <damian0815> double checking
  • [17:37:34] <damian0815> gpio-157 (sysfs ) in lo
  • [17:37:55] <Russ> and what is the full contents of your omap_mux file related to that pin?
  • [17:38:28] <damian0815> # cat /sys/kernel/debug/omap_mux/mcbsp1_fsr
  • [17:38:28] <damian0815> name: mcbsp1_fsr.gpio_157 (0x4800218e/0x15e = 0x001c), b aa21, t NA
  • [17:38:30] <damian0815> mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE4
  • [17:38:30] <damian0815> signals: mcbsp1_fsr | NA | cam_global_reset | NA | gpio_157 | NA | NA | safe_mode
  • [17:38:41] <Russ> 'OMAP_PIN_OUTPUT'
  • [17:38:44] <damian0815> oh wait what? OMAP_PIN_OUTPUT?
  • [17:38:57] <damian0815> so 'direction' isn't setting that?
  • [17:38:58] <damian0815> huh
  • [17:39:00] <mdp> kkeller, I forget people are still using board too :)
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  • [17:39:20] <Russ> damian0815, no, its separate
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  • [17:39:25] <damian0815> ahhhhhhh
  • [17:39:25] <damian0815> ok
  • [17:39:27] <damian0815> so ..
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  • [17:39:39] <damian0815> i have to edit board-omap3beagle.c right
  • [17:39:56] <Russ> I don't think so
  • [17:39:59] <damian0815> hmm..
  • [17:40:04] <damian0815> ok so how do i set that then
  • [17:40:04] <damian0815> ?
  • [17:40:28] <Russ> just set the bit for input
  • [17:40:43] <Russ> use 0x104 instead of just 0x4
  • [17:41:00] <damian0815> using sysfs?
  • [17:41:03] <Russ> yes
  • [17:41:21] <damian0815> ... i'm not catting 0x4 to anything for sysfs.
  • [17:41:32] <Russ> how are you setting mode4?
  • [17:41:54] <damian0815> it's coming up like that on boot
  • [17:42:00] <Russ> oh
  • [17:42:28] <Russ> you can echo things to mcbsp1_fsr
  • [17:42:39] <damian0815> i can?
  • [17:42:41] <kkeller> damian0815: you can always set direction like this??? echo "in" > direction
  • [17:42:41] <Russ> echo 0x104 > /sys/kernel/debug/omap_mux/mcbsp1_fsr
  • [17:43:11] * kkeller Russ is doing the right way??? kkeller is doing it the shell way???
  • [17:43:38] <Russ> kkeller, you need to do it both ways
  • [17:43:45] <damian0815> kkeller: i'm doing this. cat direction says 'in' but cat .../omap_mux/mcbsp1_fsr says OMAP_PIN_OUTPUT
  • [17:43:47] <Russ> kkeller, you have to configure the pin mux and the gpio
  • [17:44:04] <damian0815> is this new?
  • [17:44:08] <damian0815> it's not documented anywhere.
  • [17:44:29] <Russ> I'm not sure when /sys/kernel/debug/omap_mux came on the scene
  • [17:44:38] <Russ> but it saves a heck of a lot of time
  • [17:44:52] <damian0815> .. and what if the kernel is built without debugfs?
  • [17:45:06] <Russ> then you have to recompile it to change pin muxes
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  • [17:45:08] <Russ> like before
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  • [17:45:26] <damian0815> but before.. you could just echo 'in' or 'out' to 'direction'
  • [17:45:29] <damian0815> and it would work fine
  • [17:45:34] <damian0815> this is now broken.
  • [17:45:42] <damian0815> but there's no errors in syslog or anywhere.
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  • [17:46:02] <damian0815> gah linux gah. love it but hate it.
  • [17:47:04] <mdp> it's only one patch submission away from being correct
  • [17:47:49] <damian0815> mdp: but then i'd have to spend x number of hours figuring out if it's a problem with my configuration, or a bug in the kernel ;-)
  • [17:47:52] <Russ> damian0815, I don't think the gpio patch subsystem changed the mux before
  • [17:48:04] <damian0815> Russ: then wtf is the point of the direction file?
  • [17:48:16] <damian0815> Russ: i mean, a _writable_ direction file?
  • [17:48:17] <Russ> there are two disconnected subsystems
  • [17:48:26] <Russ> it does change the direction of the internal gpio block
  • [17:50:57] <mdp> damian0815: what he's getting at is that the h/w to change direction and other characteristics of a _pin_ is different and disconnected from that to change the direction of a gpio _signal_
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  • [17:51:30] <damian0815> mdp: right, but what is the use of being able to change the signal direction if i can't change the pin direction?
  • [17:51:56] <mdp> changing pin direction works for me
  • [17:52:11] <damian0815> mdp: see, that's why it's not 'one patch away from being correct'
  • [17:52:28] <damian0815> mdp: so something's broken on my config then.
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  • [17:52:47] <mdp> well, I do find it annoying that the status returned in sysfs doesn't reflect reality on am335x..but it's not high on my todo list
  • [17:52:47] <damian0815> any ideas how i might track that down?
  • [17:52:55] * _sundar_ (~sundar@110.234.156.82) Quit (Remote host closed the connection)
  • [17:52:56] <mdp> dunno about dm3730
  • [17:53:11] <mdp> or omap3530 depending on what beagleboard you are on
  • [17:53:50] <damian0815> omap3530 i think. this used to work, with 2.6.38. on 3.2.0 and 3.2.16 it's broken.
  • [17:54:50] <damian0815> ... but just to confirm something
  • [17:55:57] <damian0815> we can now change pin muxes by echoing things to /sys/kernel/debug/omap_mux
  • [17:55:58] <damian0815> ?
  • [17:56:05] <Russ> yes
  • [17:56:21] <damian0815> + there was no way to do this before this 'debug' thing?
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  • [17:56:40] <Russ> recompile
  • [17:56:48] <damian0815> right
  • [17:56:52] <Russ> the default mux configuration could have been different in 2.6.38
  • [17:56:58] <damian0815> yeah..
  • [17:57:06] <damian0815> well, no
  • [17:57:16] <mdp> damian0815: you can look at arch/arm/mach-omap2/mux.c to see what your write/read does if you are curious about the behavior.
  • [17:57:34] <damian0815> as i distinctly remember being able to read AND write a single gpio pin just by echoing 'in' or 'out' to the direction file
  • [17:57:57] <damian0815> so unless there's OMAP_PIN_BIDIRECTIONAL, something else has changed
  • [17:58:29] <damian0815> i am curious, but i'm also on a deadline :-)
  • [18:00:45] <damian0815> anyway thanks for the help
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  • [18:11:25] <damian0815> ... where is /sys/kernel/debug/omap_mux documented?
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  • [18:16:58] <mdp> in the source file I mentioned
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  • [18:19:46] <mdp> there's also cmdline args you can use to override the defaults???some docs on that in Documentation/kernel-parameters.txt, but mux.c is the best operational reference.
  • [18:21:37] <damian0815> ... ok this is definitely broken. reboot, echo 157 > /sys/class/gpio/export , cat /sys/class/gpio/gpio157/direction --> 'in'
  • [18:21:44] <damian0815> cat /sys/kernel/debug/omap_mux/mcbsp1_fsr
  • [18:21:52] <damian0815> --> 'mode OMAP_PIN_OUTPUT'
  • [18:22:02] <Russ> like I said, they are two separate subsystems
  • [18:22:24] <Russ> unless someone put the work into making one muck things up in the other, its by design that that has no effect
  • [18:24:24] <damian0815> Documentation/gpio.txt: 'direction' ... *will not exist* if the kernel doesn't support changing the direction of a GPIO, or it was exported by kernel code that didn't explicitly allow userspace to reconfigure this GPIO's direction.'
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  • [18:26:15] <damian0815> also in gpiolib.c: 'if the gpio can change direction... userspace will see "direction" sysfs attribute which may be used to change the gpio's direction'
  • [18:26:26] <damian0815> NOTHING here about different subsystems.
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  • [18:31:03] <Russ> most of that stuff was probably written before the mux subsystem existed
  • [18:32:03] <damian0815> by the 'mux subsystem' you mean '/sys/kernel/debug/omap_mux' ?
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  • [18:33:11] <damian0815> or do you mean omap_mux_init_signal() function + co ?
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  • [18:34:02] <damian0815> with 2.6.38 i used omap_mux_init_signal() AND was able to use sysfs 'direction' to change gpio pin directions
  • [18:34:14] <damian0815> (know this because i built an expansion board for a project)
  • [18:34:18] <Russ> I mean arch/arm/mach-omap2/mux.c
  • [18:34:29] <damian0815> yeah that was there in 2.6.38
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  • [18:37:39] <mdp> the gpio subsystem and associated documentation are written by people with no knowledge of an omap-specific mux subsystem
  • [18:38:02] <damian0815> ok. well i remain convinced this is a bug related to omap. where should i file the bug?
  • [18:39:38] <mdp> hrm
  • [18:39:43] <panto> prpplague, alison says hi
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  • [18:40:12] <W1N9Zr0> the sysfs direction works if you mux the pin as OMAP_INPUT_EN in the kernel, if you mux it as just output, it will not work as output no matter what direction you set in sysfs. the sysfs gpio is not aware of the omap specific configurations at all as far as i understand
  • [18:40:26] <prpplague> panto: hehe, give her a wave and ask if she is buying the first round!
  • [18:41:04] <panto> beer, sweet beer
  • [18:41:07] <panto> but it's still monday
  • [18:41:10] <panto> :/
  • [18:41:39] <damian0815> W1N9Zr0: so the bug is that someone is setting OMAP_PIN_OUTPUT by default. that would probably be U-BOOT?
  • [18:41:53] <mdp> W1N9Zr0: I tried to clarify the distinction between the mux controlling the state of the pin and the gpio stuff controlling only the state of a signal
  • [18:42:24] <damian0815> mdp: i got your clarification, but am unsure when i'd ever want my 'signal' state to be different from my 'pin' state
  • [18:42:42] <mdp> damian0815: I'm not sure that changing of a mux default is a bug
  • [18:42:51] <W1N9Zr0> the official way to do mux is in the kernel as far as i know, board-omap3beagle.c, etc
  • [18:43:13] <damian0815> mdp: in other words, the bug is the following: if i can't change the pin state, then i shouldn't be able to write to gpioN/direction , period.
  • [18:43:15] <W1N9Zr0> u-boot does the first mux, but then the kernel overrides some pins in the board file right now
  • [18:44:02] <damian0815> mdp: right. so perhaps board-omap3beagle should write a default OMAP_PIN_EN to the direction state for each of the pins?
  • [18:44:03] <mdp> damian0815: fwiw, much if not all of your concerns are addressed in the new pinctrl subsystem ??? the omap backend driver for that coupled with the linkage to the gpio subsystem does take care of the implied pin muxing when using a gpio
  • [18:44:49] <mdp> should you submit a suggestion about fixing omap_mux you'll most likely be told that it is about to be deprecated by the generic pinctrl subsystem
  • [18:44:57] <damian0815> right-oh.
  • [18:45:51] * gabeagle (4c14c345@gateway/web/freenode/ip.76.20.195.69) Quit (Ping timeout: 245 seconds)
  • [18:46:00] <mdp> in any case, it's a feature, not a bug. they link together gpio/pinmuxing with the introduction of pinctrl???for all platforms, not just omap
  • [18:46:17] <mdp> "they" :)
  • [18:46:28] <damian0815> in the meantime, what's the magic number i should write to /sys/kernel/debug/omap_mux/mcbsp1_fsr to set OMAP_INPUT_EN, so that sysfs/gpioN/direction does what it's supposed to?
  • [18:50:33] <W1N9Zr0> i will guess it's 260
  • [18:51:06] <damian0815> so 264 for mux mode 4
  • [18:51:29] <damian0815> oh wait
  • [18:51:31] <damian0815> 0x260?
  • [18:51:48] <damian0815> heh
  • [18:51:50] <damian0815> 0x104 right
  • [18:51:50] <W1N9Zr0> 1 << 8 | 4
  • [18:52:01] <W1N9Zr0> http://lxr.free-electrons.com/source/arch/arm/mach-omap2/mux.h
  • [18:52:02] <damian0815> ok ,thanks
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  • [19:03:42] <Giron> Hi, I'm a student and I'm needing help with playing a H264 video file with gstreamer on BeagleBoard C4...
  • [19:04:02] <Giron> I get this error: erroneous pipeline: no element "TIViddec2"
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  • [19:26:53] <xxiao> how does openjdk work with angstrom?
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  • [19:30:00] <ds2> bits go in, bits come out?
  • [19:30:34] <prpplague> ds2: only after you get old and have digestive problems
  • [19:31:10] <jay69811> you can't explain that!
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  • [19:31:44] <xxiao> i was asked to get openjdk 1.7 running on oe, clueless at this point, java-agnostic
  • [19:32:06] <ds2> install treadmill first
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  • [21:15:43] <mrd> has anyone ever mapped physical memory at addresses 0 or 0xffff0000 (for interrupt handling) without using the MMU? I tried to modify SDRC_CS_CFG but it will not let me map CS1 to 0xf8000000. is this an oversight in OMAP?
  • [21:17:05] <XMPPwocky> I haven't, but if you just want exception handling, use VBAR
  • [21:17:50] <mru> memory is at 0x80000000
  • [21:17:53] <mru> there's no changing that
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  • [21:18:37] <XMPPwocky> is there any reason you don't want to use the MMU?
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  • [21:19:18] <mru> you really should use the mmu
  • [21:19:26] <XMPPwocky> it's not that hard to set up, I just did it
  • [21:19:34] <mrd> yes, embedded application and I'm avoiding it
  • [21:19:35] <XMPPwocky> and you get to use the caches
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  • [21:19:49] <mrd> I've already set it up quite nicely and am now removing it for one app
  • [21:19:52] <XMPPwocky> mrd: okay, just use VBAR if you feel like it
  • [21:20:14] * mrd takes a look
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  • [21:21:45] <XMPPwocky> but really, you want to use the MMU. The utter lack of cacheing is going to hurt
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  • [21:22:43] <jay69811> icache is still available without mmu
  • [21:22:53] <_av500_> flat mapping and off you go
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  • [21:23:32] <XMPPwocky> jay69811: just L2
  • [21:23:53] <XMPPwocky> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka13835.html
  • [21:24:26] <mrd> well, caching is also a source of unpredictability, and i don't need multiple memory spaces
  • [21:24:54] <mrd> i could considering locking in addresses, i suppose
  • [21:25:01] <_av500_> you could
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  • [21:35:15] <mrd> hmm, oddly my reset value of vector base address is 0xa00. but it doesn't matter since i've been using highvt so far.
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  • [21:36:56] <mrd> hmm, VBAR is only 27 bits wide. that's not enough to access SDRAM
  • [21:37:06] <XMPPwocky> ... wait, what?
  • [21:37:09] <mrd> unless they mean that it is 32 byte aligned
  • [21:37:10] <XMPPwocky> I don't think...
  • [21:37:18] <XMPPwocky> yeah, it's aligned :P
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  • [21:39:53] <mrd> thanks, that works. wish i had known about this before. some of my reference texts are a bit old.
  • [21:40:10] <XMPPwocky> just grab the ARM ARM
  • [21:40:19] <jay69811> that VBAR wasn't easy for me to find out about either
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  • [21:59:15] <ds2> ~
  • [21:59:30] <_av500_> ??
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  • [22:23:14] <ojm> hiya :) beagleboard has gone forward, eh?
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  • [22:24:04] <ojm> so, if I've got it correctly, nowadays everything to do with boot is in the sd-card, right?
  • [22:24:05] <KeatonT> Seems that way.
  • [22:25:06] <ojm> I have c3 iirc and looks like I might need to get Xm... stuff seems much simpler, especially that pesky s-video!
  • [22:25:26] <KeatonT> I just recently got the bone.
  • [22:25:36] <KeatonT> Hopefully it lives up to my expectations,
  • [22:26:10] <djlewis> da bone doesnt make promises it cant keep ;P
  • [22:26:36] <KeatonT> :P
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  • [22:27:18] <ojm> I was messing around with a wearable computer back then, now I'm getting serious and want to make one that's actually usable
  • [22:27:36] * ppotera (~ppotera@99-100-130-116.lightspeed.stlsmo.sbcglobal.net) Quit (Client Quit)
  • [22:27:40] <djlewis> how about washable ;)
  • [22:27:56] <ojm> is there any other good solutions than beaglejuice for battery? it's out of stock currently, anyone knows when more comes?
  • [22:28:12] <ojm> washable... nah, not this version yet ;)
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  • [22:35:50] <ojm> so, batteries, anywhere? :)
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  • [23:04:31] <trelane> beaglebone power supply? (link to?)
  • [23:05:02] <mru> any 5V with enough A will do
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  • [23:09:36] <ojm> yea, I get that, but where can I buy one! :D
  • [23:10:21] <mru> any place that sells regulated power supplies
  • [23:12:34] <ojm> needs to be portable, not connected to wall
  • [23:15:10] <agmlego> ojm: Easy enough to build one.
  • [23:15:53] <agmlego> I like the LM2576 from National Semi, it is a 5V, 3A switching regulator that you can feed with just about anything hgiher than 5VDC.
  • [23:16:11] <agmlego> TO220 package is easy to heatsink too.
  • [23:16:14] <ojm> not for me :) I fail at battery related things
  • [23:16:23] <agmlego> How so?
  • [23:17:45] <ojm> I don't trust any battery I'd build myself
  • [23:17:52] <ojm> *wouldn't
  • [23:18:01] <agmlego> Who said anything about building the battery?
  • [23:18:16] <ojm> well, the whole thing, you know
  • [23:18:22] <ojm> I prefer to get it off-the-shelf
  • [23:18:50] * ogra_ (~ogra@p5098ed03.dip0.t-ipconnect.de) Quit (Excess Flood)
  • [23:19:06] <ojm> Is there anything other useful than beaglejuice?
  • [23:19:28] <agmlego> No idea, never even heard of the beaglejuice until now.
  • [23:19:33] <ojm> o.O
  • [23:19:55] <ojm> http://www.liquidware.com/shop/show/BB-BJC/BeagleJuice - here, but it's sold out
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  • [23:20:47] <agmlego> But all that looks like is an off-the-shelf Li-ion charger (probaly one from Linear Tech, they make nice ones), a management IC (might even be the same chip), and a regulator. Some LEDs and connectors, done.
  • [23:20:55] <agmlego> Yeah, I can Google. ;-P
  • [23:21:51] <ojm> I don't want to mess with all that stuff for a battery that will be all the time pretty darn near to my body :p
  • [23:21:59] <agmlego> I could build that for, say, $50 all told in a few weeks.
  • [23:22:08] <ojm> also, I'd probably just brick the thing :D
  • [23:22:08] <agmlego> No issues.
  • [23:22:15] <agmlego> But your mileage and ability may vary.
  • [23:22:23] <agmlego> What is there to brick?
  • [23:22:28] <ojm> the board? :D
  • [23:22:39] <agmlego> Which board?
  • [23:22:42] <agmlego> THe charger?
  • [23:22:49] <ojm> whichever I use? Beagleboard?
  • [23:22:54] <agmlego> Oh.
  • [23:23:00] <agmlego> How are you going to brick that?
  • [23:23:20] <ojm> by messing up with the regulators and all that :D
  • [23:23:58] <ojm> I just don't have the ability and or confidence to do it, and I'm not going to train using this thingy
  • [23:24:15] <ojm> building the thing myself is out of the question
  • [23:24:18] <agmlego> Might just be me being overly picky when bored and drunk, but that is not what bricking means.
  • [23:24:52] <agmlego> Bricking means putting the processor into an unflashable and unbootable state by fucking something up with the software or firmware loading.
  • [23:25:04] <ojm> yea, and too much power can do that, no?
  • [23:25:22] <agmlego> What you are thinking, I think, is burning the regulators out, which is the most that could happen unless you magically somehow overvolt non-power lines.
  • [23:25:23] <ojm> urr well software side no
  • [23:25:25] <agmlego> No.
  • [23:25:46] <agmlego> And regs, even BGA ones, are easily replaced.
  • [23:26:00] <ojm> well, I don't know, all I know is that I'm so not going to do that myself and just want the easy way out
  • [23:26:23] <agmlego> Heh.
  • [23:26:57] <agmlego> Contat the developers of the beaglejuice and see if/when they will have stock again, or if they are planning on making it again, or if they would be willing to open-source their designs.
  • [23:28:48] <W1N9Zr0> you could get one of these USB charger packs http://www.amazon.com/i-Sound-Portable-Power-iPhone-BlackBerry/dp/B00439G3WS
  • [23:30:00] <W1N9Zr0> i've tried the 8000mah version with my beagleboard xm, it lasts about 8 hours on idle
  • [23:31:35] <ojm> with other stuff on like the touchpanelthingy, or just the board?
  • [23:32:25] <ojm> 16000mah :O are you serious? That would solve most of my power issues...
  • [23:33:00] <W1N9Zr0> it's a 16000mah batter, not 16000mah at 5v though, still a lot
  • [23:33:04] <W1N9Zr0> *battery
  • [23:33:12] <ojm> aww
  • [23:33:14] * divine (~divine@97-94-146-75.dhcp.trlk.ca.charter.com) Quit (Quit: My damn controlling terminal disappeared!)
  • [23:33:21] <agmlego> Still, looks pretty reasonable.
  • [23:33:44] <W1N9Zr0> the 800mah version is almost the same size as the beagleboard too
  • [23:33:49] <W1N9Zr0> *8000
  • [23:34:21] <ojm> so, did you have other stuff than the board?
  • [23:34:28] <ojm> when you tested
  • [23:34:44] <W1N9Zr0> usb flash drive, wifi, bluetooth, gps
  • [23:34:45] * florian (~fuchs@Maemo/community/contributor/florian) Quit (Ping timeout: 260 seconds)
  • [23:34:55] <ojm> nice, thanks
  • [23:34:57] <W1N9Zr0> the rootfs was on the flash drive
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  • [23:36:13] <ojm> it probably doesn't come with that 2,1mm barrel cord thingy? :p
  • [23:36:36] <W1N9Zr0> it works fine right through the mini usb port
  • [23:37:15] <ojm> buuuut... I thought that one can't handle all the usb ports?
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  • [23:37:52] <XMPPwocky> W1N9Zr0: the board clocks down on usb though, i think
  • [23:38:01] <JViz> is there a changelog for the beaglebone demo image?
  • [23:38:28] <agmlego> ojm: It is strongly recommended to use a powered USB hub anyway, so...
  • [23:38:48] <W1N9Zr0> hmm really? i think cpufreq-info still showed it going up to top speed
  • [23:39:11] <W1N9Zr0> i switched to the ondemand governer
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  • [23:39:21] <XMPPwocky> might be just the bone
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  • [23:39:45] <ojm> mmm does anyone know a powered usb-hub that could conveniently draw the power from this one? :p
  • [23:40:06] <W1N9Zr0> make your own split usb cable
  • [23:40:12] <ojm> no, wait, usb-powered wouldn't be enough to power multiple things...
  • [23:40:40] <ojm> I have made one usb-cable myself and hated it
  • [23:41:24] <agmlego> So wire it in directly.
  • [23:41:44] <agmlego> Not like that thing would be hard to crack open, and the 5V rails should be nice and easy to solder to.
  • [23:42:09] <ojm> again, messing with that thingy, not gonna happen :p
  • [23:43:05] <agmlego> Where is your courage? Your sense of adventure? Your desire not to be one of the appliance-consuming sheep? Your rubber ducky? ;-P
  • [23:43:29] <agmlego> Also, it is frightfully difficult to get good at something if you do not challenge yourself.
  • [23:43:40] <agmlego> And mistakes are the fastest way to learn something.
  • [23:43:49] <ojm> Well, if I made it for myself only it would maybe be ok
  • [23:44:03] <W1N9Zr0> big, battery-on-fire mistakes ftw!
  • [23:44:10] <ojm> but I'd prefer to make something other could use too...
  • [23:44:25] <ojm> W1N9Zr0: indeed, I'd prefer to not blow up anyones legs or anything
  • [23:44:29] <W1N9Zr0> lithium batteries! 1/4 energy density of TNT!
  • [23:45:03] <mru> so someone should invent a tnt-based battery
  • [23:45:05] <agmlego> W1N9Zr0: Not like soldering to the 5V output rails is going to cause fires.
  • [23:45:07] <mru> last 4x longer
  • [23:45:45] <ojm> agmlego: I know I don't know enough and I'm not going to trust that advice, thank you very much :p
  • [23:46:14] <agmlego> ojm: OK, but it is true advice.
  • [23:46:29] <ojm> I don't doubt that
  • [23:46:38] <agmlego> You are doing exactly the same thing as you would be had you used the USB port itself, just with a different cable.
  • [23:46:56] <agmlego> There is no more chance of fire cracking it and soldering than there is in using a USB cable.
  • [23:47:14] <agmlego> Which, given the shady look of the device, is probably nonzero as it is.
  • [23:47:19] <agmlego> But that is a different story.
  • [23:47:23] <ojm> :D
  • [23:48:28] <W1N9Zr0> it's got a few certification marks on the bottom surprisingly, including a real looking CE
  • [23:48:53] <ojm> but the problem with that thing is that usb is supposed to give 500mA or something max, amiright? and so I'd need to split it and make a connection for each usb port I'm going to actually use, right?
  • [23:49:04] <W1N9Zr0> and the boards inside looked pretty clean too, no hotglue holding shit together
  • [23:50:10] <agmlego> ojm: "supposed to"
  • [23:50:28] <W1N9Zr0> ojm - it provides something like 2 amps per usb port and 2.5 total, intended for charging ipads/phones quickly.
  • [23:50:30] <agmlego> Devices are allowed to exceed it, and that device claims it can provide up to 2.4A to a connected device.
  • [23:50:47] <ojm> mmm... sounds juicy
  • [23:50:59] <agmlego> W1N9Zr0: Cert marks are easy to fake, but the testament to the boards makes me happier.
  • [23:51:21] <ojm> well, I must thank again for all the help, gotta get one then
  • [23:52:00] <ojm> one more thing, so when you use it, can you use the other usb ports on the board?
  • [23:52:15] <agmlego> Which board?
  • [23:52:18] <agmlego> The charger?
  • [23:52:22] <agmlego> Or the BeagleBoard?
  • [23:52:28] <ojm> beagleboard
  • [23:52:58] <W1N9Zr0> that's what i did, the charger goes into beagle mini-usb, then i have 4 devices plugged right into the beagle usb ports
  • [23:53:04] <agmlego> Personally, I would solder a 2.1mm plug and cable into the battery pack, and use that.
  • [23:53:22] <ojm> The ports will not function unless the board is powered by the DC jack. They
  • [23:53:22] <ojm> cannot be powered via the OTG port
  • [23:53:31] <agmlego> Last I saw, the Linux kernel had a bug that caused it not to boot if the Beagle was powered from the OTG port.
  • [23:53:32] <ojm> that's what the reference manual thingy says
  • [23:53:37] <ojm> so it shouldn't work?
  • [23:53:39] <agmlego> Yeah, that too.
  • [23:53:44] <W1N9Zr0> "works for me!"
  • [23:53:48] <ojm> ;D
  • [23:53:49] <agmlego> ::shrugs::
  • [23:53:59] <agmlego> "Last I tried" *was* like two years ago.
  • [23:54:20] <agmlego> I would still power it from the barrel jack, OTG is a shitty standard.
  • [23:54:22] <ojm> ok, but so I could just use the 2,1mm thingy
  • [23:54:23] <ojm> yea
  • [23:54:34] <ojm> thanks ^^
  • [23:54:52] <agmlego> Yup.
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  • [23:56:04] <W1N9Zr0> the charger doesn't have any usb logic in it as far as i understand, maybe that's why it doesn't crash the kernel
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  • [23:56:53] <agmlego> Perhaps.
  • [23:56:59] * thurbad (~natesewel@64.132.24.248) Quit (Quit: thurbad)
  • [23:57:08] <agmlego> Might have been a current-draw thing when it went to hit up the rest of the hardware.
  • [23:57:20] * agmlego forgets, it has been a while and he is drunk.
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  • [23:59:44] <ojm> http://www.amazon.com/5-5mm-2-1mm-Barrel-Power-Cable/dp/B00304DZ7I - ooh, check what I found :p