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  • [00:33:13] <derpderp> I keep getting this error when trying to do anything with opkg on beaglebone
  • [00:33:14] <derpderp> Collected errors:
  • [00:33:15] <derpderp> * pkg_get_installed_files: Failed to open //var/lib/opkg/info/perl-module-build.pm.list: No such file or directory.
  • [00:33:15] <derpderp> * pkg_get_installed_files: Failed to open //var/lib/opkg/info/perl-module-load.pm.list: No such file or directory.
  • [00:33:19] <derpderp> any ideas?
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  • [00:40:21] <derpderp_> I keep getting this error when trying to do anything with opkg on beaglebone
  • [00:40:21] <derpderp_> Collected errors:
  • [00:40:30] <derpderp_> * pkg_get_installed_files: Failed to open //var/lib/opkg/info/perl-module-build.pm.list: No such file or directory.
  • [00:40:43] <derpderp_> any ideas?
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  • [01:49:55] <panicking_mike> Hi
  • [01:50:07] <panicking_mike> can I ask some question about beagleboard audio connection?
  • [01:51:55] <panicking_mike> I have my own design, but is the same
  • [01:52:15] <panicking_mike> The input is connected using AUXL and AUXR on I2S connection
  • [01:52:53] <panicking_mike> I can playback the music and record it but only at the same frequency if I want it together
  • [01:52:57] <panicking_mike> in the same time
  • [01:53:15] <panicking_mike> play and record.
  • [01:54:09] <panicking_mike> Is this the same behavior on beagleboard
  • [01:54:10] <panicking_mike> ?
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  • [02:15:04] <XMPPwocky> /join #Beagle
  • [02:15:40] <scromp> no
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  • [02:17:48] <STrRedWlf> Now isn't this familiar?
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  • [02:32:38] <panicking_mike> scromp, no is the answer to my question?
  • [02:32:51] <scromp> no :)
  • [02:32:57] <panicking_mike> ok
  • [02:33:03] <panicking_mike> I need a resampler
  • [02:33:06] <scromp> i was responding to XMPPwocky
  • [02:33:15] <panicking_mike> if I want playback at 44100 and record at 8000
  • [02:33:32] <panicking_mike> so I need to have playback and record at same frequency and then resample audio
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  • [02:59:25] <etheretic> .me ponders wether to tespond, being just interested in the bb project as a potential core in a maritimely focused project.
  • [02:59:55] <etheretic> gps, etc.
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  • [03:18:02] <panicking_mike> etheretic, you can contact me ... I have several propasal for you
  • [03:18:55] * diablorosso (~xweber@p5B2D1849.dip0.t-ipconnect.de) Quit (Ping timeout: 244 seconds)
  • [03:19:17] <XMPPwocky> whoa
  • [03:19:33] <XMPPwocky> i can run ARM code on x86?
  • [03:21:12] <XMPPwocky> i did an enormous doubletake
  • [03:23:46] <etheretic> panicking_mike: i'm not a programmer. used arm-based acorn comps from 92 to 2002, loved riscos. see apotential in the bb as the engine in an eat-your-heart-out-garmin contender, playing movies and musicalong with providing opencpn functionality (primarily).
  • [03:25:19] <panicking_mike> I'm working on Android ICS on my reference design
  • [03:28:19] <panicking_mike> I have seen opencpn
  • [03:28:26] <panicking_mike> I think that is possible to move on Android
  • [03:28:31] <panicking_mike> I don';t know if it running
  • [03:28:41] <panicking_mike> I have done some work in the past with naivionics
  • [03:28:45] <panicking_mike> and geonav
  • [03:34:44] <etheretic> android = google. Google =sp00ks. they're even bragging about it along with fac3b00k. erk.
  • [03:35:42] <etheretic> stay assembler. it's verifiable.
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  • [03:43:18] <XMPPwocky> etheretic: assembler is only verifiable if you have a known trusted machine
  • [03:43:34] <XMPPwocky> and if you have a known trusted machine, why not compile on it
  • [03:45:05] <etheretic> arm code has been expended since arm7/stongarm - but it's still risc. fast.
  • [03:45:22] <etheretic> expanded, even.
  • [03:46:13] <XMPPwocky> huh?
  • [03:46:25] <XMPPwocky> if someone tampers with your assembler, you
  • [03:46:30] <XMPPwocky> 're just as screwed
  • [03:47:30] <panicking_mike> etheretic, can you explain better? what do you mean?
  • [03:57:31] <etheretic> panicking_mike: interpretable languages are way more hackable than down-on-the-silicone langs - or am i mistaken?
  • [04:01:50] * panicking_mike (~michael@net-93-65-163-248.cust.dsl.vodafone.it) Quit (Ping timeout: 260 seconds)
  • [04:03:01] <etheretic> hint @ https://www.youtube.com/watch?v=tiRUOzJ-FrE
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  • [04:16:24] <etheretic> case settled? 8)
  • [04:20:12] <etheretic> http://toughlet.com/ is onto it, but it lacks IP67ness, GPS and an NMEA port.
  • [04:22:20] <etheretic> vast market.
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  • [05:29:55] <XMPPwocky> woohoo
  • [05:30:41] <XMPPwocky> guess who's got a working "OS" (okay, raw unprotected memory image that writes an 'h' to the serial port because I can't handle the FIFO yet to write the 'ello world')
  • [05:31:21] <etheretic> sounds basic.
  • [05:31:30] <XMPPwocky> you don't say?
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  • [05:31:51] <etheretic> did.
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  • [05:32:55] <XMPPwocky> it took the entire day, because I had to wade through 4000 pages of TRM to figure out how the UARTs worked
  • [05:34:53] <etheretic> traumatic realistic manual?
  • [05:35:18] <XMPPwocky> http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=spruh73c&fileType=pdf this.
  • [05:36:13] <etheretic> it's something about an async r/t chip thing...
  • [05:38:39] <etheretic> XMPPwocky: did you ever come across the amulet async arm proc?
  • [05:41:05] <CalcProgrammer2> Ubuntu question - does xserver-xorg-video-omap3 not work when VRFB rotation is enabled? My LCD is "tall screen" and I want widescreen, but this driver loads without VRFB and does not load with it
  • [05:48:07] <XMPPwocky> etheretic: can't say I have
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  • [05:50:04] <etheretic> XMPPwocky: it was something furber messed around with. there was silicone, afaik.
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  • [07:53:03] <_av500_> CalcProgrammer2: vrfb is evil
  • [07:53:56] <CalcProgrammer2> is there a better way to rotate the screen?
  • [07:54:33] <_av500_> use the sgx like android :)
  • [07:55:39] <CalcProgrammer2> is this even possible through X11? if so I'm interested to see how it works, I almost have SGX working (modules loaded, just need to figure out how to keep X from undoing my fbset changes and stick at 16 bit)
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  • [08:00:19] <dm8tbr> CalcProgrammer2: talk to stskeeps, e.g. on #mer
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  • [08:38:41] <CalcProgrammer2> Ok, so I should be close to making SGX work but still giving me trouble, I have the three modules loaded and I installed the gfx_rel_es5.x libraries on the device, /etc/init.d/rc.pvr start worked but still getting errors
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  • [08:39:21] <CalcProgrammer2> if I run eglinfo, I get
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  • [08:39:51] <CalcProgrammer2> Couldn't load library libGL.so: libGL.so: cannot open shared object file: No such file or directoryUnable to initialise egl
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  • [08:40:55] <_av500_> CalcProgrammer2: using sgx to rotate x11 means to have the final x11 buffer rendered through sgx
  • [08:41:04] <_av500_> not sure the usual xx1+3d covers that
  • [08:41:31] <CalcProgrammer2> still trying to get sgx up at all, I have the screen in normal portrait orientation and rotation off
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  • [08:42:46] <CalcProgrammer2> if I run services_test, I get a bunch of OK's then it fails at PVRSRVEnumerateDeviceClass() returns 0 display devices() FAIL - PVRSRV_ERROR_NO_DC_DEVICES_FOUND
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  • [08:47:48] <mike_simpson> I purchased 2 DVI-D capes for 2 beaglebones, which the capes will not show up on the new monitor equipped with DVI port and the beaglebone do in fact work. Does anyone know of known issues with the capes? I also used radio shack small mounts on the beagle bones too. Please advise, the new guy.
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  • [09:49:59] <zhn> hi there, I've some problem here with running dsp apps on BBxm , I get such error while loading cmemk module: FATAL: Error inserting cmemk (/lib/modules/2.6.32/kernel/drivers/dsp/cmemk.ko): Bad address
  • [09:50:35] <zhn> I googled a lot but didn't figure out what exactly to do !
  • [09:51:08] <zhn> I'v set bootargs like this: setenv bootargs console=${console} vram=${vram} mapfb.mode=dvi:${dvimode} omapfb.debug=y omapdss.def_disp=${defaultdisplay} root=${mmcroot} rootfstype=${mmcrootfstype} mem=80M@0x80000000 128M@0x88000000
  • [09:51:56] <zhn> and cmemk options when loading is this: phys_start=0x83700000 phys_end=0x85900000 allowOverlap=1
  • [09:53:04] <zhn> I do not really understand what is the problem with! I'll happy if anyone give me a help on this, or a good how to which could solve this
  • [09:54:15] <zhn> ( dsplink and lpm_omap3530 modules are already loaded)
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  • [09:58:55] <zhn> any idea?
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  • [10:13:24] * zhn ping! :D
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  • [10:21:32] <_av500_> zhn: its sunday
  • [10:21:59] <_av500_> people dont spend all their time on irc waiting for you
  • [10:22:55] <zhn> _av500_: I didn't except people waiting for me dude, I just was wondered how silent the channel is :D ;)
  • [10:24:45] <_av500_> zhn: but do some math
  • [10:26:04] <_av500_> 80M < 0x3700000
  • [10:26:13] <_av500_> err, >
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  • [11:16:01] <panicking_mike> etheretic, Are you there?
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  • [12:05:30] <etheretic> panicking_mike: aye.
  • [12:06:48] <panicking_mike> Hi, i'm interesting of the usage of beagleboard. Because I can provide same technologies and help
  • [12:07:00] <panicking_mike> on new design. Right now I'm working on Android
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  • [12:52:58] <etheretic> the navbox i'm thinking of would run navigatrix.
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  • [17:25:09] <mranostay> gah i hate daylights savings
  • [17:25:53] <unsolo_> question regarding the usb ether gadget.. does it show up as a ethx in linux on the gadget ?
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  • [18:01:53] <CalcProgrammer2> SGXInit: Mismatch in client-side and KM driver build options; extra options present in the client-side driver: (0x1). Please check sgx_options.h
  • [18:02:30] <CalcProgrammer2> I take it this means I need to build SGX modules with DEBUG=1?
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  • [18:44:58] <Vic999> Is this any way to receive analog inputs in Beaglebone under ubuntu
  • [18:46:27] <Vic999> ?
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  • [18:50:26] <_av500_> usb
  • [18:50:35] <_av500_> oops
  • [18:50:48] <_av500_> thought you meant analog video
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  • [18:51:21] <thurbad> you'd have to convert to digital first wouldn't you?
  • [18:52:35] <Vic999> I want to read analog inputs AIN0-AIN6 from header in c program or some script
  • [18:54:04] <W1N9Zr0> googling "beaglebone ain0" produces http://www.gigamegablog.com/2012/01/22/beaglebone-coding-101-using-the-serial-and-analog-pins/
  • [18:54:31] <_av500_> W1N9Zr0: googling is unfair cheating
  • [18:55:16] <Vic999> It doesn't work in Ubuntu. folder tsc is empty in Ubuntu. I googled for 2 hours before asking
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  • [18:59:36] <W1N9Zr0> well that page says why it doesn't work on ubuntu, looks like you have to track down the kernel modification that makes it work in angstrom
  • [18:59:41] <W1N9Zr0> that or use an i2c adc
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  • [19:07:37] <Vic999> Can I take angstrom kernel as is and put it to ubuntu? I mean uImage
  • [19:16:59] <W1N9Zr0> not as far as i know
  • [19:17:01] <adj> Vic999: you can, but some things will work while others won't
  • [19:21:41] <Vic999> thanks. I will try to compile it from git
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  • [19:39:43] <unsolo_> anyone used usb gadget ethernet
  • [19:39:45] <unsolo_> ?
  • [19:42:39] <thurbad> I've used g_ether on the beagleboard... but it's been a while
  • [19:43:01] <unsolo_> thurbad: does it show up as a separate ethernet device in linux ?
  • [19:43:10] <unsolo_> (on the actual board)
  • [19:43:25] <unsolo_> or is it simply a bridge
  • [19:43:32] <unsolo_> guess it can be both
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  • [19:45:00] <thurbad> on the actual board I think it appeared as usb0 or eth0 f that's what you're asking
  • [19:45:15] <unsolo_> thurbad: yea thats what i was wondering
  • [19:45:28] <unsolo_> is it a piece of sw in addition to the kernel ?
  • [19:45:36] <thurbad> been about a year and a half since I've actually used it
  • [19:45:47] <unsolo_> thurbad: not important.
  • [19:45:49] <unsolo_> ;)
  • [19:45:51] <thurbad> it's requires loading a kernel module
  • [19:45:59] <unsolo_> and thats it ?
  • [19:46:01] <thurbad> or two
  • [19:46:47] <thurbad> well, you also have to configure it based on how you connected it
  • [19:47:01] <unsolo_> hmm
  • [19:47:06] <unsolo_> what board did you do it on?
  • [19:47:11] <unsolo_> beagle-xm ?
  • [19:47:41] <thurbad> classic beagle c4
  • [19:47:46] <unsolo_> k
  • [19:47:55] <unsolo_> should be the same tho
  • [19:48:04] <thurbad> the xm has a dedicated ethernet, so it's not needed as much
  • [19:48:41] <unsolo_> thurbad: if your "pc" or "tablet" lacks ethernet you get a usb->ethernet converter
  • [19:48:51] <unsolo_> provided you bridge it
  • [19:49:28] <thurbad> yes you can use usb-ethernet, but that doesn't use the g_ether connection
  • [19:49:31] <unsolo_> also the performance may be better than the one on ehci
  • [19:49:34] <thurbad> the g_ether is for otg
  • [19:49:57] <unsolo_> hmm
  • [19:50:12] <unsolo_> so if you want to be a usb-ethernet client how would you do that.
  • [19:50:21] <thurbad> usb-ethernet requires a driver for the usb device
  • [19:50:30] <unsolo_> hmm
  • [19:50:36] <thurbad> depends on the device you use
  • [19:51:30] <unsolo_> so gadget != client device
  • [19:51:46] <unsolo_> or gadget is gadget & client
  • [19:51:48] <thurbad> I've used a couple from trendnet successfully
  • [19:52:16] <thurbad> I /think/ gadget refers to a mode on the otg usb port
  • [19:52:28] <thurbad> not 100% on that
  • [19:52:33] <unsolo_> thurbad: i thought gadget = client mode
  • [19:52:54] <unsolo_> at least thats what i am reading of this http://www.linux-usb.org/gadget/
  • [19:53:22] <unsolo_> The <linux/usb_gadget.h> API makes it easy for peripherals and other devices embedding GNU/Linux system software to act in the USB "device" (slave) role.
  • [19:53:36] <unsolo_> the fact is that otg is a controller capable of operating in a slave mode.
  • [19:53:45] <unsolo_> but also as host
  • [19:54:27] <thurbad> possible, I've never used it on anything but the beagle's otg port
  • [19:54:34] <unsolo_> ;)
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  • [19:54:57] <unsolo_> thurbad: thanks anyways now i think i can "try" it ;)
  • [19:55:14] <unsolo_> just had to check if i needed any special user space stuff to get it going
  • [20:06:12] * mranostay waves
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  • [20:12:10] <unsolo_> hmm i wonder if i can loop the ethernet gadget to the ehci on the same board
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  • [20:18:14] <Guest98925> Question: Do U guys own a beaglebone cape dvi-d and if so, are you have any issues getting it to work? Sorry for my intrusion into your discussion.
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  • [20:22:10] <unsolo_> no discussion to intrude ;)
  • [20:22:19] <unsolo_> sorry i own a bone but it has no cape
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  • [20:23:18] <Guest98925> No problem. Thank U.
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  • [20:25:31] <unsolo_> hmm not to bad 3.6MB/s transfering from my laptop to my beagleboard over usb with g_ether
  • [20:25:34] <unsolo_> me likes
  • [20:25:44] <unsolo_> and damn easy to use too
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  • [20:28:52] <unsolo_> even get same performance as the on board xm ethernet..
  • [20:29:04] <unsolo_> <-- likes this
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  • [21:00:20] <unsolo_> so what is the general procedure to get opkg update working when all the fetching in opkg update fails
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  • [21:02:02] <Mojito> Depends why it fails
  • [21:02:42] <unsolo_> damn things missing default gateway..
  • [21:02:46] <unsolo_> <-- blames himself
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  • [21:14:50] <unsolo_> hmm
  • [21:14:53] <unsolo_> interesting
  • [21:15:07] <unsolo_> why does usb outperform the ether gadget
  • [21:15:17] <unsolo_> maybe my cable is shit
  • [21:15:26] <unsolo_> or my pc device driver is shit
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  • [21:15:49] <Demos> Hello
  • [21:15:53] <unsolo_> i see no reason why the omap ehci should outperform the otg in g_ether mode
  • [21:16:09] <unsolo_> other than crappy linux drivers or something like that
  • [21:16:20] <Demos> Anyone have working wince7 nap?
  • [21:16:25] <Demos> Bsp
  • [21:17:35] <Demos> The demo image supplyed with the board is completely useless.
  • [21:17:57] * phantone is now known as phantoxe
  • [21:18:12] <unsolo_> id say the same for wince7
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  • [21:18:24] <unsolo_> bbl
  • [21:18:26] <unsolo_> wife time
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  • [21:19:17] <Demos> I have not used Linux b4, to start now would set me back for years :(
  • [21:20:12] <thurbad> wince for arm not so free :/
  • [21:20:43] <Demos> For some reason I got myself mislead about the demo image vs demo bsp
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  • [21:22:33] <Demos> If I know that bsp cost extra $500 I would not buy it
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  • [21:58:28] <Tyger> damm so much ppl
  • [21:59:40] <mranostay> we try
  • [22:00:51] <Tyger> can anyone help me? i want to know if the communication between the bone and the XM is easy
  • [22:01:14] <Tyger> how flexible it is
  • [22:01:44] <W1N9Zr0> what do you want to communicate?
  • [22:02:36] <mranostay> it is a called a network :)
  • [22:02:56] <Tyger> process video on the bone but its comming from the XM
  • [22:03:17] <Tyger> i dont know anything about this right now, is this possible?
  • [22:04:32] <jay6981> a lot is possible, but not nessecarily practical
  • [22:04:56] <W1N9Zr0> you could use ethernet, but why would you do that when the XM is the higher end board
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  • [22:05:31] <Tyger> because im trying to share the load between boards
  • [22:05:53] <mranostay> heh that doesn't work well with 10/100 lines :)
  • [22:06:16] * mranostay vaguely remembers OpenMosix
  • [22:07:40] <Tyger> the MX has not enough power to do everything so i want to use the bone to help the MX out with some extra tasks like video processing
  • [22:08:05] <W1N9Zr0> you should probably keep high bandwidth tasks on the xm
  • [22:08:37] <W1N9Zr0> move the lower/slower stuff to the bone, or look into a higher end cpu all together, like the dual core pandaboard
  • [22:09:11] <Tyger> say that i need to process 4 streams with all main tasks the MX can do 2 and the bone would do the other 2
  • [22:09:43] <Tyger> the pandaboard can be expanded too?
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  • [22:16:25] <adsfd> shot in the dark here, but would anyone know how to set up GPIO interrupts?
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  • [22:17:40] <W1N9Zr0> http://elinux.org/EBC_Exercise_03_gpio_Polling_and_Interrupts
  • [22:20:36] <adsfd> thanks, reading
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  • [22:28:30] <adsfd> in the link you provided, the sample program that demonstrates gpio interrupts uses "POLLPRI" event.
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  • [22:29:13] <adsfd> can you elaborate on how this works? Is this form of polling considered an interrupt?
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  • [22:31:54] <adsfd> or are there any prebuilt images that have gpio interrupts configured already?
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  • [22:43:15] <adsfd> from the linux man: POLLPRI: "High-priority data may be read without blocking."
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  • [22:44:15] <adsfd> In the example, I don't see how interrupts are being implemented. The example still uses the poll method on the gpio every "POLL_TIMEOUT" seconds
  • [22:44:35] <W1N9Zr0> it's not a poll like a spin loop wait poll
  • [22:44:47] <W1N9Zr0> the os suspends the thread untill there's an interrupt
  • [22:44:55] <W1N9Zr0> then returns from poll
  • [22:45:34] <adsfd> ah ic. is there any kernel configuration required to use this method of interrupts?
  • [22:45:46] <W1N9Zr0> i don't know, but i'm about to try it on my ubuntu image
  • [22:47:06] * RITRedbeard (RITReadbea@t410xx.student.rit.edu) Quit (Ping timeout: 244 seconds)
  • [22:48:29] <Crofton> hmm, I need a pana with 4G of ram
  • [22:49:29] <adsfd> So if we need near real-time notification without blocking, would this method still work without taking all the CPU time when setting the POLL_TIMEOUT to a very small time?
  • [22:52:25] <unsolo_> mranostay: openmosix is painful
  • [22:53:13] <unsolo_> Crofton: a panda not a pana i guess
  • [22:53:33] <unsolo_> btw why do you need 4 gigs of ram
  • [22:53:35] <W1N9Zr0> you put the poll loop in a separate thread and set a long timeout
  • [22:53:38] <mranostay> unsolo_: it is dead too :)
  • [22:53:55] <unsolo_> mranostay: i buildt some openmosix clusters back in the day
  • [22:53:58] <W1N9Zr0> your main thread will be block free, and your poll thread will only wake up when there's an interrupt
  • [22:54:10] <unsolo_> but distcc and povray where a lot better at distributing the load than mosix
  • [22:54:32] <adsfd> Ah that makes sense. Any luck testing on your image?
  • [22:55:13] <W1N9Zr0> trying to find which gpio i should test with
  • [22:55:30] <W1N9Zr0> i was going to try it on the user button, but that's owned by some other driver
  • [22:55:34] * unsolo_ wonders why someone is polling interrupts off gpio instead of enabling gpio irq
  • [22:55:42] <Crofton> unsolo_, yes
  • [22:55:47] <Crofton> thanks for the asm help last night
  • [22:55:52] <Crofton> mru got it
  • [22:55:58] <unsolo_> hehe
  • [22:56:07] <unsolo_> <-- sucs at asm
  • [22:56:08] * mturquette (~mturquett@nat/ti/x-sjiiwweacmlnukzy) Quit (Ping timeout: 240 seconds)
  • [22:56:14] <Crofton> yeah
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  • [22:56:24] <Crofton> the trick is the clobbers or whatever
  • [22:56:29] <unsolo_> why do you need 4 gigs of ram ?
  • [22:56:38] <Crofton> tell gcc you write the value it uses in the section you want to time
  • [22:56:51] <adsfd> unsolo, if you have a reference for gpio irq implementation, can you link it? we have been looking for documentation but unable to find anything
  • [22:57:00] <Crofton> because some guy on the panda list is wondering why they have such little ram
  • [22:57:07] <unsolo_> Crofton: if i got mru right one should maybe stick asm outside of c
  • [22:57:13] <unsolo_> that also does the trick
  • [22:57:25] <Crofton> yes, but I am trying to time C :)
  • [22:57:29] <unsolo_> xD
  • [22:57:35] <Crofton> so that defeats the purpose
  • [22:57:54] <unsolo_> adsfd: is this the bone or the beagle _
  • [22:57:56] <unsolo_> haha
  • [22:58:01] <Crofton> basically, inline gets tricky getting the constraints right
  • [22:58:06] <unsolo_> the board or the bone is more correct./
  • [22:58:08] <adsfd> beagle - xm
  • [22:58:23] <unsolo_> adsfd: using gpios in linux on xm is simple
  • [22:58:25] <Crofton> intrinsics will give you issues with register scheduling
  • [22:58:29] <Crofton> regular asm lets you control all details
  • [22:58:35] <unsolo_> gpio request gpio set direction
  • [22:58:45] <unsolo_> and then use the gpio to irq translate
  • [22:58:47] <unsolo_> request ireq
  • [22:58:51] <unsolo_> -e
  • [22:58:56] <unsolo_> and voila
  • [22:59:00] <adsfd> can you elaborate on the irq translate?
  • [22:59:01] <unsolo_> even works for the gpio on the tps
  • [22:59:27] <unsolo_> adsfd: its a function that translates the gpio pin number to a linux irq number so you can request it
  • [23:00:03] <adsfd> what is "watching" for the irq request?
  • [23:00:07] <unsolo_> read the arch/arm/mach-omap2/bard-omap3beagle.c on how to get the irq
  • [23:00:15] <adsfd> We have only worked with interrupts on atmega/similar chips
  • [23:00:21] <adsfd> and aren't familiar with linux interrupts
  • [23:00:23] <mru> Crofton: you could write then whole thing in asm
  • [23:00:29] <adsfd> reading now*
  • [23:00:32] <mru> what you're timing is a function call
  • [23:00:43] <mru> and a trivial one at that
  • [23:00:45] <XMPPwocky> question: I should set up VMSA before I deal with the interrupt vectors, yes?
  • [23:00:58] <XMPPwocky> *after
  • [23:01:08] * mturquette (~mturquett@nat/ti/x-soqzfaixkelmgkrb) Quit (Ping timeout: 240 seconds)
  • [23:03:19] <XMPPwocky> since I can at least have some basic debugging printouts
  • [23:03:50] <unsolo_> adsfd: call gpio_to_irq(pin)
  • [23:04:00] <unsolo_> to get the returned irq number of that pin
  • [23:04:49] <unsolo_> adsfd: http://osdir.com/ml/beagleboard/2011-05/msg00729.html
  • [23:04:57] * tor_ (~tor@c-1465e655.125-1-64736c10.cust.bredbandsbolaget.se) Quit (Quit: Ex-Chat)
  • [23:05:23] <unsolo_> adsfd: that should contain everything you need
  • [23:05:37] <unsolo_> and interrupt handling happens in kernel space
  • [23:06:39] <adsfd> so from our userspace program, is there a function used to jump to when an interrupt occurs?
  • [23:07:10] <unsolo_> adsfd: fastest thing is to either do a blockign ioctl untill it happens or wait using epoll/poll on a char device.
  • [23:07:43] <unsolo_> unsure if you can map gpio to userspace directly then poll on that
  • [23:08:16] <unsolo_> but in either case you need a "kernel" module that registers for that interrupt
  • [23:08:41] <unsolo_> which should also handle it unless its something silly that doesnt require any form of realtime
  • [23:08:51] <unsolo_> but this is not omap specific
  • [23:08:53] <unsolo_> its linux
  • [23:10:01] <unsolo_> there is a way to export gpio directly to userspace and you can in a thread or process scan that but it will be slow
  • [23:10:11] <unsolo_> you can also do that with memory space
  • [23:10:17] <unsolo_> but you cannot export irq's
  • [23:10:32] <adsfd> so why is it that you said to use irq instead of the non blocking poll
  • [23:10:43] <unsolo_> adsfd: its faster and more proper
  • [23:11:12] <adsfd> We need it in our userspace programs
  • [23:11:15] <unsolo_> polling a pin every n msec generates a certain load compared to never
  • [23:11:34] <unsolo_> never meaning hw irq occurs otherwise nothing happens
  • [23:12:06] <unsolo_> the dm3730 has 6 gpio banks mapping 6x32 irq's into 6 hw irq pins
  • [23:12:47] <unsolo_> those 6 hw irq pins map into the dm3730's total of 96 hardware interrupts
  • [23:13:10] <unsolo_> this is where the linux irq handler is called
  • [23:13:14] <unsolo_> in kernel space
  • [23:13:53] <unsolo_> it's normal to even use kernel space irq to detect headset insertion.
  • [23:14:17] <unsolo_> so what is it you are doing and its maybe somewhat easier to tell you what you should do
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  • [23:17:14] <unsolo_> adsfd: if you have to have everything in userspace (which makes me think this is some proprietary stuff) http://groups.google.com/group/beagleboard/browse_thread/thread/27995ebeb765695d
  • [23:17:27] <adsfd> we have 3 pir sensors and 1 accelerometer that will be connected to 4 gpio pins. We need to activate different cameras based on what gpio pin is high as fast as possible
  • [23:17:28] <unsolo_> but you can allways add a small opensource driver in kernelspace
  • [23:17:43] <unsolo_> adsfd: move to kernelspace..
  • [23:18:05] <unsolo_> and have the camera code do an epoll on which camera to run
  • [23:18:19] <unsolo_> or hack linux camera code and have it swap it in kernel space
  • [23:18:27] <unsolo_> depends on the speed you desire
  • [23:18:50] * Crofton (~balister@65.14.229.26) Quit (Quit: Leaving)
  • [23:19:40] <adsfd> we are using the uvc driver for our usb web cameras. We are running gstreamer for recording
  • [23:19:42] <unsolo_> btw wouldnt swapping cameras every ms make you go crazy ?
  • [23:20:13] <adsfd> we aren't- we are recording as soon as the gpio goes high
  • [23:20:20] <unsolo_> i see
  • [23:20:39] <unsolo_> and all the camera streams are running at the same time ?
  • [23:20:49] <unsolo_> over the usb i mean
  • [23:20:53] <adsfd> up to 3. we are able to do this up to ~5fps
  • [23:21:05] <adsfd> (usb bandwidth issue)
  • [23:21:15] <unsolo_> adsfd: use the otg
  • [23:21:19] <unsolo_> and get one extra
  • [23:21:23] <adsfd> is that on another bus?
  • [23:21:30] <unsolo_> yup
  • [23:21:32] <adsfd> awesome
  • [23:21:55] <adsfd> you have been most useful person for our project lol. more than our advisor. thanks
  • [23:21:57] <unsolo_> you can even attach an extra hub to it provided the hub gets power
  • [23:22:10] <unsolo_> you need to configure the otg into host mode
  • [23:22:16] <unsolo_> and make yourselves a custom cable
  • [23:22:36] <unsolo_> btw
  • [23:22:49] <unsolo_> if you start the stream only when needed
  • [23:22:58] <unsolo_> you can get more ..fps
  • [23:23:09] <unsolo_> but imho there is no realtime requirement here
  • [23:23:30] <unsolo_> because gstreamer setup and uvc initiation is waay slower than polling irq pins every 1ms
  • [23:23:35] <adsfd> i see.
  • [23:24:01] <adsfd> so the nonblocking polling method would suffice since the bottleneck is at our other components
  • [23:24:12] <unsolo_> so you could get from 1ms and down to maybe 0.1 ms or less using a kernel driver but that wouldnt help the 500ms it takes to do the gstreamer + uvc
  • [23:24:27] <unsolo_> one way to get another camera onto the beagle is to actually use the camera port on it
  • [23:24:39] <unsolo_> leopard imaging has a few to sel
  • [23:24:40] <unsolo_> sell.
  • [23:25:42] <unsolo_> so imho in 640x480@30fps one can easely have 3 running cameras on the beagle. and it would severely help you if those usb cameras did on chip encoding
  • [23:26:13] <unsolo_> actually with on chip encoding h264 or similar id bet maybe 8 or 9 cameras could be possible
  • [23:26:48] <adsfd> while polling, we would get segmentation faults at 1ms
  • [23:27:00] <unsolo_> 4 cams on otg through hub, 4 cams on EHCI through onboard hub.(remeber ethernet also uses that hub)
  • [23:27:07] <unsolo_> 1 camera on the camera interface
  • [23:27:26] <unsolo_> adsfd: that would be your code beeing crap
  • [23:29:25] <adsfd> Taking a look at the code, must be the fopen in our while loop. yep
  • [23:33:10] * _roger_ (~a0740758@nat/ti/x-pdyxvgfixztkrnfq) Quit (Ping timeout: 260 seconds)
  • [23:33:48] <unsolo_> jay6981: http://christwire.org/2012/03/lillyhammer-tv-show-reveals-the-corrupt-alcoholic-culture-of-socialist-norway/
  • [23:34:00] <unsolo_> <-- is having a blast reading it
  • [23:36:45] <jay6981> the sad thing is that people actualyl believe that shit
  • [23:36:54] <unsolo_> hehe
  • [23:37:04] <mru> wow, that guy's not beating around the bush
  • [23:38:27] <unsolo_> notice that the X mafia boss is mentioned as an American Businessman
  • [23:38:36] <mru> isn't norway one of the richest countries in the world (per capita)?
  • [23:38:58] <unsolo_> mru: last time i checked my account id didn't feel that way
  • [23:39:15] <unsolo_> there is a huge difference between money and value for money
  • [23:39:20] <mru> yeah, tell me about it
  • [23:39:21] <jay6981> a lot of oil subsidies iirc
  • [23:39:24] * mru lived in oslo for a while
  • [23:39:55] <unsolo_> <-- has lived in oslo for 26 years of his 32
  • [23:40:00] <mranostay> christwire? please tell me that is a joke
  • [23:40:18] <jay6981> the joke is you can't tell
  • [23:40:21] <mru> still, I was not poor by any definition
  • [23:40:32] <unsolo_> mru: indeed
  • [23:40:42] <mranostay> jay6981: i was raised baptist so i know people believe this shit :)
  • [23:40:53] <jay6981> there are people with beliefs so ridiculous it is impossible to tell them from satire
  • [23:41:18] <mru> yeah, when you hit INT_MAX it wraps around
  • [23:41:37] <unsolo_> jay6981: its good that they write satire for us non belivers
  • [23:42:08] <unsolo_> mru: whenever something happens to my car. i go to the dentist or look into buying a house i feel poor
  • [23:42:45] <unsolo_> and ofc when i was a student
  • [23:43:04] <unsolo_> biggest problem is that the state has more than 50% of the workforce
  • [23:43:22] <mru> is it that bad?
  • [23:43:29] <unsolo_> mru: its horrible
  • [23:43:44] <mru> I mean is the figure really that high?
  • [23:43:46] <unsolo_> past 10 years things have only gotten worse on that end
  • [23:43:49] <jay6981> so it IS a socialist nightmare
  • [23:43:51] <mru> of course that figure is terrible if true
  • [23:43:53] <unsolo_> mru: i think its higher
  • [23:44:16] <mru> jay6981: well, there are reasons I didn't stick around
  • [23:46:01] <unsolo_> if you include hospitals etc i think the number is above 1.5 million
  • [23:46:14] <unsolo_> and only about 800 000 in private sector
  • [23:46:28] <unsolo_> which means those 800 000 are turning the wheel around
  • [23:47:10] <mru> and the rest? unemployed or retired?
  • [23:47:14] <ka6sox> The US is doing its damnedest to go the same direction.
  • [23:47:18] <XMPPwocky> wat
  • [23:47:22] <unsolo_> to young to old to lazt or some other shit
  • [23:47:24] * Stevetronics (~Stevetron@h45.180.21.98.dynamic.ip.windstream.net) has joined #beagle
  • [23:47:36] * XMPPwocky rings the libertarian circlejerk alarm
  • [23:47:42] <mranostay> ka6sox: yeah but don't have 50 million working for the feds yet :)
  • [23:48:05] <mru> scandinavia is a bit too socialist for my liking
  • [23:48:07] <mranostay> this channel is getting too real can we go back to r-pi bashing? :)
  • [23:48:19] <unsolo_> mranostay: sure
  • [23:48:23] <mru> rpi has to be a communist plot!
  • [23:48:34] <unsolo_> i talked to a guy earlier today who was thinking of ordering a r-pi
  • [23:48:59] <mranostay> unsolo_: some of my friends are
  • [23:49:02] <unsolo_> but the r-pi is lacking cool io so hes probably ordering up a bone..
  • [23:49:06] <mranostay> i'm ashamed of them :)
  • [23:49:39] <mru> friends don't let friends order rpi
  • [23:49:51] <unsolo_> here are a few other options
  • [23:50:41] <unsolo_> http://www.origenboard.org/ http://www.nvidia.com/object/carma-devkit.html http://www.fxitech.com/products/
  • [23:50:46] <mru> oh dear
  • [23:50:58] <mru> origen is a disaster
  • [23:51:05] <mru> and anything nvidia spells trouble
  • [23:51:23] <unsolo_> but honestly if you want to hack around with some 3v3 io go buy a beaglebone
  • [23:51:40] <unsolo_> if you want a nice little fanless pc buy a beagleboard
  • [23:51:56] <unsolo_> i guess the thing i think suck is the lack of 1080p on the beagle..
  • [23:52:01] <mru> panda then
  • [23:52:08] <unsolo_> mru: A9 sux
  • [23:52:11] <mru> lies
  • [23:52:14] <mru> a9 is great
  • [23:52:20] <mru> a15 is even better of course
  • [23:52:31] <unsolo_> mru: id rather get a A15 or A7
  • [23:52:39] <mru> a7 is a joke
  • [23:52:40] <unsolo_> or both together
  • [23:52:46] <mru> well, as a solo core it's a joke
  • [23:52:55] <unsolo_> well i was thinking 8 cores
  • [23:53:02] <mru> can't have that
  • [23:53:02] <jay6981> whats wrong with A9?
  • [23:53:08] <unsolo_> mru: you can
  • [23:53:13] <mru> unsolo_: not easily
  • [23:53:15] <unsolo_> but not in a single core
  • [23:53:22] <unsolo_> but on a single die
  • [23:53:30] <unsolo_> (if someone ever does it)
  • [23:53:31] <mru> a15 only goes to 4x
  • [23:53:45] <unsolo_> amba allows for 8 way for both of them
  • [23:53:46] <mru> you can build a cluster of 4 quads
  • [23:54:01] <unsolo_> oO
  • [23:54:13] <unsolo_> i thought the number of ways was tied to the number of cores
  • [23:54:27] <unsolo_> anyhow A9 sux
  • [23:54:30] <unsolo_> compared
  • [23:54:32] <mru> it does not
  • [23:54:40] <mru> a9 is a fine core
  • [23:54:44] <mru> sure, it's not perfect
  • [23:54:53] <unsolo_> it is a fine core and its very not TI available
  • [23:54:53] <mru> but it does not suck by any stretch of imagination
  • [23:55:00] <unsolo_> in small numbers
  • [23:55:05] <mru> different matter
  • [23:55:12] <mru> omap4460 is a fine chip
  • [23:55:19] <unsolo_> i have no dubt about it
  • [23:55:32] <mru> and there are SoMs available
  • [23:55:40] <mru> from several vendors
  • [23:56:19] <unsolo_> mru: tbh imho panda shouldnt have existed unless ti had the same rule as for the omap3.
  • [23:56:37] <unsolo_> its a way of getting some but not to large community
  • [23:56:37] <mru> why?
  • [23:56:47] <unsolo_> socialist talking now
  • [23:56:51] <unsolo_> j/k
  • [23:57:10] <mru> the panda is a way for TI to get the chips in the hands of potential customers
  • [23:57:43] <unsolo_> the dm37 and amd35x is making its way into car's etc. but with the volume requirement it just doesnt make one tick
  • [23:57:47] * lyakh (~lyakh@dslb-084-061-109-075.pools.arcor-ip.net) Quit (Quit: thanks, bye)
  • [23:57:55] <unsolo_> a lot of stuff out there is in 1k - 40k range
  • [23:58:18] <unsolo_> none of it (with panda beeing an exception) will be omap4xxx
  • [23:58:47] <unsolo_> so im hoping for a dm5530
  • [23:58:58] <unsolo_> :)
  • [23:59:56] <mru> http://www.phytec.com/products/som/Cortex-A9/phyCORE-OMAP4460-OMAP4430.html