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  • [00:05:43] <dancios> Hello i've got a question what is the easiest way to viewimage in VLC(x86 PC) and send live video cam h264 encoded by DSP(what rtsp/rtp/other server technlogy). The TI example pipelines does not work :( http://processors.wiki.ti.com/index.php/Example_GStreamer_Pipelines or i cannot utilsed them
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  • [00:34:49] <aholler> video through vlc?
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  • [00:37:08] <djlewis> sakoman_: it was me, like you said no /dev/i2c-2 in either r12 BB image, got my SD's crossed
  • [00:37:35] <dancios> i want to use libgstrtspserver
  • [00:37:52] <dancios> but i don;t know how to combine gst pipline
  • [00:48:26] <smplman_> is the xorg-evtouch module causing segmentation faults for anyone?
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  • [01:23:40] <Marbug_> I got the kernel working, VRAM was 0 in the kernel and omapfb couldn't allocate memory
  • [01:32:50] <ds2> Hmmmmm
  • [02:02:17] <Crofton> ds2, did you help khem at SCALE?
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  • [02:24:17] <ds2> Crofton: yes
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  • [03:44:55] <NotTooDumb3> djerome, i can test your code now quickly
  • [03:45:01] <NotTooDumb3> do you want me to test?
  • [03:46:38] <djerome> NotTooDumb3, hi, how about in 20 min, i'm just making a new one
  • [03:46:57] <NotTooDumb3> sure..please paste the link once again, once done.
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  • [03:52:55] <NotTooDumb3> Hi small clarification, in this link http://www.angstrom-distribution.org/demo/beagleboard/, do i need to execute commands before "To the Beagleboard Beginner" if i am not working on dsp?
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  • [03:54:50] <djlewis> no
  • [03:55:24] <djlewis> that portion is for flashing your nand in pre XM boards
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  • [03:55:51] <NotTooDumb3> ok..when i am trying with NTSC bootargs, my kernel is hanging in the middle..any help for me? i will paste the log in few mins
  • [03:56:04] <NotTooDumb3> i do not have xM board, i have C3 with me
  • [03:57:06] <djlewis> the the short paragraph is memory settings for dsp use then nand flash below that
  • [03:57:51] <NotTooDumb3> if we work on arm, dont we need to do nand flash?
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  • [03:58:28] <djlewis> once we see your log from power up boot we can tell
  • [03:58:35] <NotTooDumb3> and people working on dsp, don't they need to execute rest of the statements like we copy MLO etc.,
  • [03:58:49] <djlewis> you can break the boot at countdown and paste that part
  • [03:59:05] <djlewis> different ideas
  • [03:59:06] <NotTooDumb3> surprisingly it booted up now..i dont know
  • [03:59:12] <djlewis> happens
  • [03:59:20] <NotTooDumb3> need to switch on tv yet
  • [03:59:38] <djlewis> wont show anything if it is off
  • [04:00:14] <djlewis> or do you mean the boot is not showing a display to tv?
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  • [04:00:37] <NotTooDumb3> djerome, previously after i give NTSC bootargs, kernel bootup was hanging in middle
  • [04:01:34] <NotTooDumb3> it's not going to NTSC mode, i mean no angstrom logo..that's why it's booting up
  • [04:02:52] <NotTooDumb3> log here..http://pastebin.com/07GQi0u3 any help for me i need to see something on tv, with frame buffer
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  • [04:04:17] <djerome> NotTooDumb3, i don't know anything about beagleboad video.
  • [04:04:51] <NotTooDumb3> djerome, np..someone here might be knowing, thankfully and hopefully
  • [04:06:58] <NotTooDumb3> cat /dev/urandom > /dev/fb cat: write error: No space left on device..any help how to free up space or is this an error?
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  • [04:10:14] <djerome> NotTooDumb3, you should do something like "ls -l /dev/fb" and take a look at it.
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  • [04:11:20] <djerome> Is /dev/fb a regular file that filled for file system with random data? or is it a device node that you put random data into?
  • [04:11:55] <NotTooDumb3> i believe it must be a node
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  • [04:12:37] <djerome> How do you know it is? What does the "ls -l" show on it?
  • [04:13:05] <NotTooDumb3> ls -l /dev/fb lrwxrwxrwx 1 root root 3 Jan 1 1970 /dev/fb -> fb0
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  • [04:13:34] <djerome> ok, now look at "ls -l /dev/fb0"
  • [04:14:24] <NotTooDumb3> http://pastebin.com/U0idXuwa
  • [04:15:47] <djerome> NotTooDumb3, good, but what are you trying to do by throwing random data into the fb device?
  • [04:18:23] <NotTooDumb3> i want to see if i enabled the fb device and if it works..then i can assure that yes it's up
  • [04:19:18] <djerome> maybe "fbset -i" or "cat /proc/fb" will tell you something interesting
  • [04:19:37] <NotTooDumb3> sure
  • [04:19:54] <NotTooDumb3> fbset works..not sure about i i will check
  • [04:21:16] <NotTooDumb3> my fbset -i is like this http://pastebin.com/Kw18CNVb
  • [04:21:19] <djerome> i have a test build of ttylinux for beagle board at http://ttylinux.net/Test/boot01.zip
  • [04:21:31] <NotTooDumb3> ya i will test 2 mins
  • [04:22:12] <NotTooDumb3> cat /proc/fb is like this http://pastebin.com/R56JYc3L
  • [04:22:59] <NotTooDumb3> boot01.zip right? downloading
  • [04:25:28] <djerome> yes. as far as i can tell the frame buffer looks ok...
  • [04:26:12] <NotTooDumb3> i must see something i think some settings or bootargs are still missing for me to be able to see somthing
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  • [04:31:08] <djlewis> NotTooDumb3: some more video settings: omapfb.mode=tv:ntsc omapdss.def_disp=tv
  • [04:31:19] <djlewis> for nand
  • [04:33:51] <djlewis> NotTooDumb3: something like this
  • [04:34:05] <djlewis> NotTooDumb3: "console=ttyS2,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait omapfb.mode=tv:ntsc omapdss.def_disp=tv omapdss.tvcable=composite"
  • [04:34:48] <djlewis> I will have to try s-video some day when I get real bored :)
  • [04:34:52] <djlewis> good night
  • [04:35:16] <NotTooDumb3> good night
  • [04:37:10] <NotTooDumb3> djerome, instead of running rm -rf /media/LABEL1/* i ran rm -rf * /media/LABEL1/* in hurry..so deleted everything alogwith the downloaded folder from my home
  • [04:37:38] <djerome> dude
  • [04:39:17] <NotTooDumb3> yep..linux illiterate i am..i think i know meaning of that but did it in hurry and absent minded
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  • [04:41:33] <NotTooDumb3> first boot and then user scripts right?
  • [04:43:06] <djerome> yes: MLO, u-boot.bin, uImage, ramdisk.gz, boot.scr, user.scr
  • [04:43:56] <NotTooDumb3> ok..http://pastebin.com/tvXHYTWa
  • [04:44:06] <NotTooDumb3> sorry i did not copy ramdisk.gz
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  • [04:46:49] <NotTooDumb3> djerome, looks like similar outpu
  • [04:47:15] <djerome> yeah, something wrong in my boot.scr
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  • [04:47:38] <NotTooDumb3> http://pastebin.com/AQBaEbtv
  • [04:47:41] <NotTooDumb3> oh..ok
  • [04:47:59] <djerome> really odd....
  • [04:49:32] <NotTooDumb3> what is really happening and what is odd?
  • [04:50:08] <djerome> odd: i don't see the output from the first echo command
  • [04:51:07] <NotTooDumb3> oh so you put some echo statement in your boot.scr?
  • [04:51:07] <djerome> what is really happening is my script has some error on your c3 that it doesn't have on xm
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  • [04:52:02] <djerome> yes, the first echo should give: "U-Boot Script Running"
  • [04:53:19] <NotTooDumb3> oh..ok
  • [04:55:01] <djerome> oh. is your mmc device 0 or 1
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  • [04:56:47] <ds2> hmm
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  • [05:03:10] <NotTooDumb3> djerome, how to check that? no idea for me
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  • [05:04:47] <djerome> NotTooDumb3, i think i see it in the pastebin, but the command might be "mmc list" if you stop the boot you can use that command to see the list of devices
  • [05:05:42] <djerome> my boot.scr shuld give a "mmc rescan 0" and i was wondering if that caused the problem
  • [05:06:16] <NotTooDumb3> mmc init mmc1 is available
  • [05:06:31] <djerome> oops
  • [05:07:49] <djerome> so, what does a "mmc rescan 0" give you?
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  • [05:11:05] <NotTooDumb3> djerome, any idea if angstrom demo has X server running in it?
  • [05:12:20] <djerome> i thought that it did not have that
  • [05:13:09] <NotTooDumb3> ok..
  • [05:13:33] <djerome> NotTooDumb3, if you are willing to try another, i have uploaded http://ttylinux.net/Test/boot02.zip
  • [05:13:52] <NotTooDumb3> let me check rescan first
  • [05:15:01] <NotTooDumb3> mmc rescan 0 mmc - MMC sub-system Usage: mmc init [dev] - init MMC sub system mmc device [dev] - show or set current device
  • [05:15:53] <djerome> hey, good, that is the error message from my boot.scr; so the new upload shouldn't have that problem
  • [05:16:58] <djerome> it seems that c1/c2/c3 have mmc 1 and xm has mmc 0; maybe because of the flash on the c1/c2/c3
  • [05:17:47] <NotTooDumb3> oh..sure i wll test your new code
  • [05:18:50] <NotTooDumb3> djerome, i got angstrom logo previously with NTSC bootargs, i do not know why i am not getting that now..i gave same bootargs
  • [05:21:13] <djerome> so, do you mean you got put on a tv/display connected on the s-video and now you dont? or just something different on the display connected to the dvi?
  • [05:21:53] <NotTooDumb3> my connected tv did not change, my display on the tv changed from logo to nothing now
  • [05:22:41] <NotTooDumb3> http://pastebin.com/20Ds9bwx
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  • [05:23:31] <djerome> Oo
  • [05:24:40] <NotTooDumb3> yes..
  • [05:24:54] <NotTooDumb3> not sleeping? is this working on xM?
  • [05:25:29] <djerome> well, the kernel booted on an xm, and it douldn;t find the ramdisk
  • [05:26:18] <NotTooDumb3> kernel boots up with ramdisk also? i do not know..
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  • [05:26:55] <djerome> the boot.scr loads the kernel and loads the ramdisk, then jumps to the kernel with a kernel commanline options
  • [05:27:36] <djerome> and the kernel "bootargs" weren't right and the kernel couldn't find the ramdisk
  • [05:28:12] <djerome> but i don't know how to make boot.scr work for c1/c2/c3 and xm, i gues
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  • [05:29:08] <NotTooDumb3> in demo image, i am not loading any boot.scr ..are there any default files?
  • [05:30:14] <djerome> NotTooDumb3, youmean in the angstrom test sd card?
  • [05:30:27] <NotTooDumb3> no..angstrom demo image
  • [05:30:47] <NotTooDumb3> http://www.angstrom-distribution.org/demo/beagleboard/ from here
  • [05:31:37] <djerome> oh. i'm don't know if i've actually seen it, other than the web page
  • [05:32:22] <NotTooDumb3> how do you compile your kernel for bb?
  • [05:32:35] <djerome> i'm sort of crazy for trying to make a little linux distro for the beagle board without actually having a beagle board...
  • [05:32:57] <NotTooDumb3> my office people are not very happy when i told them i am working with angstrom as i could not compile the source and bring up bb
  • [05:33:19] <NotTooDumb3> djerome, as long as bb is in my hands, i can always test for you
  • [05:33:32] <NotTooDumb3> djerome, how do you compile your source code btw?
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  • [05:34:04] <djerome> NotTooDumb3, i built an armv7-a cross-compiler tool chain
  • [05:34:36] <NotTooDumb3> that's good..i tried with code sourcery, did not succeed so came to angstrom
  • [05:35:53] <NotTooDumb3> is that a difficult process? cross compiling? what happens if we dont give boot and user scr files?
  • [05:36:36] <djerome> making a cross-gcc is ...
  • [05:37:03] <djerome> ...like, i don't know, mayeb Alice in Wonderland
  • [05:37:48] <djerome> if you stop the boot, with the sd card having my upload file, i can walk you through a manual startup
  • [05:38:47] <djerome> can you use the serial console and see my boot.scr at the same time, two different windows on the same monitor?
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  • [05:40:18] <djerome> i mean to say that making a cross-gcc is weird, frustrating and takes a long time to understand
  • [05:42:34] <NotTooDumb3> two windows do you mean two minicom windows?
  • [05:43:06] <djerome> not, one minicom and another just to edit/view the boot.scr on the host
  • [05:43:16] <NotTooDumb3> i can..
  • [05:44:21] <djerome> so, if you stop the boot, and look at the boot.scr you can see what it is trying to do. the first thing is "mmc rescan 1"
  • [05:46:02] <djerome> and after that, try a "fatls mmc 1" just to see if it shows you the files on the sd card
  • [05:46:08] <NotTooDumb3> mmc rescan 1 MMC Device 1 not found
  • [05:46:13] <djerome> oops
  • [05:46:17] <djerome> mmc rescan 0
  • [05:46:32] <NotTooDumb3> mmc rescan 0 OMAP3 beagleboard.org #
  • [05:47:05] <djerome> now maybe "fatls mmc 0"
  • [05:47:40] <NotTooDumb3> http://pastebin.com/kSGMtyXy
  • [05:47:58] <djerome> sweet
  • [05:48:23] <djerome> fatload mmc 0 0x81600000 ramdisk.gz
  • [05:49:22] <NotTooDumb3> fatload mmc 0 0x81600000 ramdisk.gz reading ramdisk.gz 3285775 bytes read
  • [05:50:01] <djerome> good, now try: fatload mmc 0 0x80300000 uImage
  • [05:51:05] <NotTooDumb3> fatload mmc 0 0x80300000 uImage reading uImage 2631068 bytes read
  • [05:51:23] <djerome> ok, thanks, now there is a long line
  • [05:51:50] <djerome> can you copy/paste from the boot.scr window into minicom?
  • [05:52:18] <NotTooDumb3> sure
  • [05:52:49] <djerome> the line with "setenv bootargs ..." BUT with tinitrd=0x81600000 not the variable you see
  • [05:53:20] <djerome> setenv bootargs console=ttyO2,115200n8 console=tty0 initrd=0x81600000,24M root=/dev/ram0 rw ramdisk_size=24576
  • [05:53:25] <djerome> like that
  • [05:53:46] <NotTooDumb3> OMAP3 beagleboard.org # setenv bootargs console=ttyO2,115200n8 console=tty0 initrd=0x81600000,24M root=/dev/ram0 rw ramdisk_size=24576 OMAP3 beagleboard.org #
  • [05:54:12] <djerome> yes, now is easy: bootm 0x80300000 0x81600000
  • [05:54:54] <NotTooDumb3> booting up..
  • [05:54:57] <NotTooDumb3> let's see
  • [05:55:07] <djerome> so, i wonder why my first script didn't work... must be the "if test" crap i have
  • [05:55:44] <djerome> propably dies i the ass again looking for ramdisk
  • [05:55:53] <NotTooDumb3> yes
  • [05:56:47] <NotTooDumb3> http://pastebin.com/5nB0QXD5
  • [05:57:31] <djerome> thanks for the pastebin.
  • [05:58:29] * _AlTheKiller is now known as AlTheKiller
  • [06:00:23] <djerome> wtf. it says it freed the initrd memory. i guess i dun know how to do ramdisk anymore...
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  • [06:03:32] <NotTooDumb3> oh..ok
  • [06:03:44] <NotTooDumb3> are you doing this as hobby?
  • [06:03:50] <djerome> yes
  • [06:04:15] <NotTooDumb3> ok..
  • [06:04:29] <NotTooDumb3> shall i change mmc contents? or will you try anything now?
  • [06:04:31] * ZeZu (~ZeZu@c-98-227-57-1.hsd1.in.comcast.net) Quit ()
  • [06:04:46] * arc_mat_ is now known as arc_mat
  • [06:05:19] <djerome> NotTooDumb3, thanks so much. i'm done for today. i need to think about why its throwing away the initrd
  • [06:05:39] <NotTooDumb3> ok.good night
  • [06:06:38] <djerome> yes. goodnight
  • [06:06:55] <djerome> and thanks
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  • [06:10:12] <NotTooDumb3> np
  • [06:17:20] <djerome> NotTooDumb3, i think the initrd= shouldn't be in the bootargs at all. i need to go but if you want to retry without the initrd=, please do
  • [06:17:35] <djerome> NotTooDumb3, does you application need x11 ?
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  • [06:20:54] <saurabh_> how to find cpu info in runtime
  • [06:21:28] <djerome> saurabh_, cat /proc/cpuinfo
  • [06:22:06] <NotTooDumb3> does you application need x11 ? no
  • [06:22:20] <saurabh_> yes i know but i want to use in my application
  • [06:22:46] <saurabh_> I am not able to read coprocessor register in user mode
  • [06:23:01] <saurabh_> is there any ulternative to this
  • [06:23:39] <djerome> i dun know coprocessor register
  • [06:24:03] <saurabh_> ok
  • [06:24:23] <djerome> gotta go... talk next time NotTooDumb3
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  • [06:24:44] <NotTooDumb3> sure..good night
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  • [06:43:15] <saurabh_> how to get cpu id in user mode?
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  • [06:51:24] <saurabh_> cpu info in user mode
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  • [07:32:51] <kaio> does bbxm come with wifi?
  • [07:32:58] <saurabh_> how to get cpu info in user mode
  • [07:33:08] <kaio> (just confirming, though it is on my hands now)
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  • [07:56:41] <_av500__> kaio: no
  • [07:57:25] <_av500__> sakoman__: cat /proc/cpuinfo
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  • [08:06:10] <kaio> so what is usb0 respresent?
  • [08:06:36] <hurgood> usb0 is the built in ethernet connection
  • [08:06:50] * hurgood is now known as thurbad
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  • [08:07:12] <kaio> but my ubuntu used usb1 as the built in ethernet connection
  • [08:07:39] <_av500__> so?
  • [08:08:04] <kaio> just wondering how come there are both usb0 and 1
  • [08:08:11] <thurbad> ok, this show both usb0 and usb1?: ifconfig -a
  • [08:08:24] <kaio> thurbad, yes
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  • [08:09:19] <thurbad> hmm, not sure what it would be on ubuntu.. it could be an otg connection
  • [08:09:34] <thurbad> but that's just a guess
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  • [09:01:47] <aholler_> g_ether
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  • [09:19:34] <NotTooDumb3> Norritt42, Hi. i got a new system now, MLO file http://www.angstrom-distribution.org/demo/beagleboard/ in this link appears in junk characters to me..did you face this anytime?
  • [09:23:44] <Norritt42> I have never looked in to that file. But rigth now my MLO is just scrap.
  • [09:24:06] <Norritt42> NotTooDumb3 So you are still in the hunt of geting your system to boot?
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  • [09:27:55] <NotTooDumb3> Norritt42, sadly yes. on previous system demo image booted up but not with svideo which i needed and i got new system today..i need to work for demo image boot up now
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  • [09:38:02] <hem> hi all, Can some body please point the URL for source & Build instruction for gingerbread on Devkit8000
  • [09:38:54] <NotTooDumb3> gingerbread? what is that
  • [09:39:02] <hem> android
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  • [09:41:19] <NotTooDumb3> ok..
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  • [09:48:22] <NotTooDumb3> hi all when i am trying to download MLO and uImage from link, they are getting downloaded as .gif files. is that a problem?
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  • [09:54:50] <koen> NotTooDumb3: are you right-clicking on the icons instead of the files?
  • [09:55:46] <_av500_> NotTooDumb3: yes, gif is patented
  • [09:55:54] <NotTooDumb3> no Koen..from someother link i got the files proper, when i am following the same procedure i am just seeing some junk characters on minicom..what should i check now?
  • [09:56:36] <NotTooDumb3> http://beagleboard.org/demo/esc#esc-301 i downloaded MLO and uImage from this link now..is this the same as original demo?
  • [09:58:49] * NotTooDumb3_ (~vayavya@122.166.13.141) has joined #beagle
  • [09:59:07] <NotTooDumb3_> sorry it got closed somehow...any messages for me?
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  • [10:03:10] <aholler> yes, someone said "shut up".
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  • [10:32:05] <koen> NotTooDumb3: only use the files from http://www.angstrom-distribution.org/demo/beagleboard/
  • [10:32:29] <koen> NotTooDumb3: random shit on the internet is usually exactly, that, random shit
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  • [11:51:33] <anr78> I'm bringing up some new beagle-inspired boards. One boots fine, while the other hangs on "Waiting for root device /dev/mmcblk0p3" when I use the same SD card. Any ideas or tips on what/how to debug?
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  • [12:01:39] <anr78> u-boot loads the kernel from that device, so its at least alive at one point
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  • [12:05:06] <ynezz> boot using nfsroot and mount try to mount the sd card from there, try another sd card
  • [12:06:55] <ynezz> or hire someone skilled for the omap3 board bringup...
  • [12:07:44] <ynezz> btw there was talk by prpplague on the last ELCE about the board bringup using opensource tools
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  • [12:12:18] <rick_> anr78, My sd card uses /dev/mmcblk0p2 for root device...
  • [12:13:30] <ynezz> it's not lottery, it should work with any number :p
  • [12:13:50] <anr78> ynezz, I'm gonna have to try to be skilled myself :)
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  • [12:14:49] <anr78> rick_, I have two partitions that I use for rootfs, /dev/mmcblk0p2 and /dev/mmcblk0p3. On software upgrades I upgrade the inactive one.
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  • [12:16:25] <rick_> anr78, How about dig the initrd?
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  • [12:27:24] <anr78> rick_, hm? digging in the code you mean?
  • [12:27:48] <anr78> 3/4 cards hang on that line. Feels like monday
  • [12:31:59] <rick_> It seem the root file system mounted by initrd, or something thing like initramfs...
  • [12:35:41] <rick_> on my beagle xM, it always hangs in kernel stage if I reboot by pressing "reset" button.
  • [12:36:06] <rick_> But it always fine if I unplug the power line first and replug it back.
  • [12:39:57] <anr78> ok. I'm replugging all the time, since I haven't gotten the powerbutton to work yet :)
  • [12:41:48] <rick_> Oh, you create your own board
  • [12:41:54] <thurbad> and you can still boot on the first board?
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  • [12:46:41] <anr78> thurbad, yep.
  • [12:47:56] <rick_> Does the first board also mount /dev/mmcblk0p3 ? or it mount your another root partition?
  • [12:48:31] <rick_> anr78, maybe you can check kernel command line to see if the use the same rootfs configuration.
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  • [12:57:34] <anr78> rick_, it's the same sdcard tested on two different boards, so everything (except the hw) is the same
  • [12:57:47] <anr78> no NAND/NOR to mess things up
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  • [13:13:53] <anr78> Having neither nand nor nor I can remove mtd support from the kernel, right?
  • [13:14:42] * Tectu (~Tectu@57-84.60-188.cust.bluewin.ch) Quit (Quit: Leaving)
  • [13:15:22] <NotTooDumb3> what is mtd?
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  • [13:16:21] <slchen> NotTooDumb3: http://en.wikipedia.org/wiki/Memory_Technology_Device
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  • [13:20:27] <slchen> anr78: How about your root fs problem?
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  • [13:21:09] <NotTooDumb3> what was that root fs problem?
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  • [13:22:50] <NotTooDumb3> Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24) Reading boot sector Loading u-boot.bin from mmc..my kernel (beagle demo files) boot hangs after this..can any one tell why me why it hangs there if any idea?
  • [13:23:55] <anr78> slchen, I'm looking at the kernel config now to see if I spot something odd (for my hw) there. One of the boards suddenly started booting when I tried another sdcard. Then I went back to the bad one, and that booted as well... Hwguy is probing a bit atm.
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  • [13:26:35] <slchen> anr78: so you expect this a hw problem?
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  • [13:29:16] <anr78> slchen, possibly. he found out that a "card detect" pin had different levels on the two boards
  • [13:29:56] <thurbad> but if it's getting that far it's already detected the card, hasn't it?
  • [13:31:40] <slchen> thurbad: We also get one board that mmc is available under boot loader stage, but can't be found in Linux.
  • [13:32:02] * slchen (~slchen@host-58-115-113-196.dynamic.kbtelecom.net) Quit (Quit: slchen)
  • [13:33:34] <anr78> thurbad, u-boot actually loads the kernel from that very sd-card and boots it, so <something> happens later that makes it hang on "waiting for rootfs".
  • [13:34:18] <anr78> hwguy said something about the card detect pin being used to cut power to the sdcard, but I haven't dug into the docs yet.
  • [13:38:43] <NotTooDumb3> do any of you see angstrom logo while and after loading the demo image..if so can you please share bootargs with me?
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  • [13:56:35] <anr78> case closed. seems some stuff they use in the soldering caused bad connections in the mmc connector.
  • [13:58:43] <onur_> hello, i need to connect beagle to internet via ethernet. i found that i need a usb to ethernet adapter, but i couldn't find the recommended adapter on BeagleBoardShoppingList. anyone knows is digitus DN-3016A compatible with beagleboard?
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  • [14:01:44] <ynezz> anr78: easy, isn't it? :p
  • [14:03:09] <anr78> ynezz, yup :)
  • [14:04:49] * NotTooDumb3 (NotTooDumb@124.125.45.21) has joined #beagle
  • [14:06:37] <onur_> anyone?
  • [14:06:39] <NotTooDumb3> smplan, Hello
  • [14:06:54] <NotTooDumb3> onur_, ask your question, if anyone has any idea, they will reply you
  • [14:07:14] <onur_> hello, i need to connect beagle to internet via ethernet. i found that i need a usb to ethernet adapter, but i couldn't find the recommended adapter on BeagleBoardShoppingList. anyone knows is digitus DN-3016A compatible with beagleboard?
  • [14:09:16] <Crofton> av500, http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=200915686948109237984.00049dda16970a58e933c&t=h&z=13
  • [14:10:15] <NotTooDumb3> hello all, in boot args as shown in this link http://pastebin.com/tDUUe1Fy what do mmcroot nandroot mean? why are they assigned to some files or nodes, whose name i do not even know.can anyone please let me know how they work?
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  • [14:15:08] <_av500_> Crofton: yes, I hate you
  • [14:15:20] <Crofton> :)
  • [14:15:33] <NotTooDumb3> smplman, my /var/log/Xlog0.log output is here http://pastebin.com/G8HFN9yg can you please tell me what you understand from this? i do not really make any sense out of it.
  • [14:15:35] <Crofton> that's ok, you snowboard in .eu and I hat you :)
  • [14:15:51] <smplman> NotTooDumb3: looking now
  • [14:16:12] <NotTooDumb3> smplman, thank you for your interest and time
  • [14:17:20] <smplman> NotTooDumb3: a bunch of your modules are failing to load. Are you using an xorg.conf?
  • [14:17:24] <NotTooDumb3> can you please have a look at my bootargs too which are pasted above once? if i missed something..one parameter in my bootargs is repeated multiple times, i do not know how to avoid repetition in bootargs and make it look better for better undersanding
  • [14:17:26] * slchen (~slchen@host-58-115-113-196.dynamic.kbtelecom.net) has joined #beagle
  • [14:18:17] <NotTooDumb3> smplman, i do not know if i am using xorg.conf, i never edited it..i just followed beagle board demo page till now..
  • [14:18:23] <smplman> NotTooDumb3: "omapfb.mode=dvi:640x480MR-16@6t" are you using hdmi or the svideo?
  • [14:18:39] <NotTooDumb3> it's svideo
  • [14:18:48] <smplman> thats one of your problems
  • [14:18:54] <NotTooDumb3> why?
  • [14:19:01] <smplman> dvi needs to be tv i think to enable svideo
  • [14:19:09] <smplman> or lcd i cant remember
  • [14:19:11] <_av500_> Crofton: ok, les call it a draw :)
  • [14:23:02] <NotTooDumb3> av500 do i need to mention x y resolutions and bits for ntsc mode can i say it like omapfb.mode=ntsc:640x480MR-16@6t and how to avoid repetition in bootargs? my printenv looks horrible with each parameter listed multiple times
  • [14:23:18] <NotTooDumb3> smplman, i did not get you..i connected svideo to tv..
  • [14:24:15] <smplman> NotTooDumb3: not the boot arg, yes i believe that it is ntsc but google around to see if its a valid boot arg
  • [14:24:21] <NotTooDumb3> smplman, with s-video and tv, once after giving NTSC bootargs i saw the kernel loading to be hanging in between with angstrom logo..next time onwards even after giving NTSC bootargs, i am not seeing any angstrom logowhile booting up..
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  • [14:25:03] <NotTooDumb3> smplman, actually till before : it is a valid boot args, i do not know how to give res infact..
  • [14:25:24] <smplman> NotTooDumb3: yea the omapfb is showing on the tv thats why you see the kernel booting. Xorg is failing thats why you don't see the angstrom logo
  • [14:25:53] <NotTooDumb3> smplman, it
  • [14:26:35] <NotTooDumb3> sorry it's like before the kernel unload starts during bootargs i see vertical lines with NTSC on lefthand side, before and after that i just see auto with blue screen on tv
  • [14:27:23] <NotTooDumb3> smplman, that's only once, now i do not see kernel booting on tv..i need to read some documentation to understand bootargs i guess..any idea of any doc for undersatnding bootargs?
  • [14:27:25] <smplman> have you tried googling around for beagleboard svideo?
  • [14:27:31] <NotTooDumb3> yes
  • [14:27:49] <Crofton> av500, deal
  • [14:28:04] <smplman> NotTooDumb3: can you boot into angstrom with the hdmi and all that works fine?
  • [14:28:15] <Crofton> there are no places like the Mosserwirt in the US :(
  • [14:28:34] <NotTooDumb3> hdmi? i never tried it..does it work with svideo?
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  • [14:29:44] <NotTooDumb3> smplman, can you please tell me what you have made to work on bb and with what bootargs?
  • [14:30:00] <smplman> NotTooDumb3: hdmi and svideo don't work together. Try to get video out of the hdmi before you tackle the svideo
  • [14:30:17] <smplman> NotTooDumb3: im using a usb monitor, not the svideo
  • [14:30:24] <NotTooDumb3> oh..
  • [14:30:25] <smplman> your bootargs look fine
  • [14:30:43] <NotTooDumb3> hdmi and dvi are same is it>?
  • [14:31:16] <smplman> NotTooDumb3: no they are not but, on the beagleboard you need to use the HDMI to DVI adapter for it to work.
  • [14:31:19] <NotTooDumb3> are you displaying analog/digital video on it? which kernel version did you compile? did you do make or used angstrom?
  • [14:32:01] <NotTooDumb3> ok..is DVI supposed to be bit easier than svideo?
  • [14:32:11] <smplman> NotTooDumb3: i cant remember the kernel version, and im running ubuntu. You might want to think of switching. Ubuntu seems to work better for beginners
  • [14:32:22] <NotTooDumb3> do we get USB to svideo/composite adapters in market?
  • [14:32:41] <smplman> NotTooDumb3: on ubuntu my dvi worked right after i installed X and fluxbox
  • [14:33:07] <smplman> NotTooDumb3: im sure you can find one. Join #sparkfun and ask
  • [14:34:13] <NotTooDumb3> smplman, i can infact try, how much time does it take? to be frank, i am getting scoldings from my manager through no one in my team know for switching to Angstrom itself, now ubuntu means? that's really an adventure in these situation? as an extra effort i can definitely try
  • [14:34:42] <NotTooDumb3> first of all, i do not know if office guys have dvi to hdmi adapter and a hdmi tv.. i think we do not have
  • [14:34:51] <smplman> NotTooDumb3: pay me and i will come get it all setup for you
  • [14:34:55] <NotTooDumb3> what is fluxbox?
  • [14:34:59] <smplman> window manager
  • [14:35:30] <smplman> and no offense, but you seem to be biting off more than you can chew. You should know some linux before you dive into a beagleboard
  • [14:35:33] <NotTooDumb3> smplman, how much do you charge me? not me infact it's not my work, office's work
  • [14:35:48] <smplman> NotTooDumb3: depends on what all you need done
  • [14:36:56] <NotTooDumb3> smplman, true..i need to know linux but because of the pressure from manager, i am not able to concentrate on learning
  • [14:38:02] <_av500_> fire the manager
  • [14:38:14] <NotTooDumb3> why?
  • [14:38:37] <_av500_> its a known to work pattern :)
  • [14:39:05] <smplman> NotTooDumb3: tell you manager to contact me about working
  • [14:39:06] <NotTooDumb3> i could not get what you mean..oh..learning and then working? ok.
  • [14:39:40] <smplman> i wish i could get paid to learn a beagleboard and what not
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  • [14:40:12] <NotTooDumb3> yes..they want work to be just like that..i saw each chapter of linux in a nutshell book online..i will read that now..
  • [14:40:43] <NotTooDumb3> smplman, people do not want to pay you for your learning right?
  • [14:40:52] <NotTooDumb3> i mean for me also for that matter
  • [14:45:08] <smplman> NotTooDumb3: well i paid my way through school but i love to learn new stuff. If i can get paid to learn new technology, hardware and software, life is good.
  • [14:45:52] <smplman> NotTooDumb3: you can't really learn linux in a couple of days. Its trial and error.
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  • [14:48:57] <NotTooDumb3> smplman, yes..believe this understanding hard disk formatting itself was a satisfactory learning for me..now i am too enthoo to learn about bootargs..dont know if i will get any docs especially for that
  • [14:49:34] <smplman> NotTooDumb3: you have to know what kind of bootloader you are using. Can you tell me?
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  • [14:50:29] <NotTooDumb3> smplman, you feel like that that it's good if you get paid to learn new stuff, but the reality atlease what i and my friends believe is that we do not get enough time in offices to clearly understand and learn, everything will be in so much hurry that we half learn and forget them once they work for that time being
  • [14:50:39] <NotTooDumb3> yes u-boot
  • [14:50:56] <NotTooDumb3> if that's a name and not a kind of boot loader then i really do not have any idea
  • [14:51:16] <smplman> NotTooDumb3: good you are learning. I get paid to web develop all day. All the beagleboard stuff that i do is after i go home at night
  • [14:51:39] <smplman> so now you are looking for uboot boot args
  • [14:51:48] <smplman> google around and see what you find
  • [14:51:59] <NotTooDumb3> smplman, no man..i really have too much to learn..i still do not understand so much of this stuff from web
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  • [14:52:49] <smplman> NotTooDumb3: like i said trial and error. I have my monitor working but not the touchscreen. I have been trying for 2 weeks to get it going. I just keep trying and learning
  • [14:52:50] <NotTooDumb3> smplman, one question, when we say uboot bootargs, do they remain same for any board as long as we use uboot for that board?
  • [14:53:31] <smplman> NotTooDumb3: yes they are in the boot.cmd. you will have to regenerate them after you make changes
  • [14:53:51] <NotTooDumb3> smplman, because it's your hobby work you can take your own time..my full time work now is on linux, so i need to understand it thoroughly
  • [14:53:53] <smplman> NotTooDumb3: but they can be moved to different boards with similar configurations
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  • [14:54:30] <NotTooDumb3> is boot.cmd system generated or something we write?
  • [14:54:39] <smplman> NotTooDumb3: you act like i don't want to figure out the same shit as fast as i can. Its only fun when stuff works
  • [14:54:55] <smplman> NotTooDumb3: there is boot.sys and boot.cmd
  • [14:55:05] <smplman> one is used to generate the other
  • [14:56:02] <NotTooDumb3> yes true it's fun only when stuff work..i do not really do after office work any fast..so i just said..please dont take it serious
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  • [15:04:36] <NotTooDumb3> smplman, one generates the other means atleast one has to be provided in the package right? so does that .sys file come in MLO?
  • [15:05:16] <smplman> NotTooDumb3: it may be in MLO but o dont thing MLO will run on the beagleboard
  • [15:06:51] <NotTooDumb3> how? i ran demo image and MLO is the thing which comes first
  • [15:08:11] <NotTooDumb3> which ubuntu did you load on bb? i can try once without informing anyone if that works and increases my confidence..do you have any links to suggest me regarding that?
  • [15:08:29] <smplman> http://old.nabble.com/How-to-build-MLO-and-u-boot.bin-files-td21433422.html thats for mlo
  • [15:10:50] <smplman> http://elinux.org/BeagleBoardUbuntu
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  • [15:24:41] <NotTooDumb3> hi smplman my father met with a small accident in the afternoon it seems..though i called my sister to talk casually she did not tell me as i will take more tenstion and as anyway i live in different place than they live..he is around 65 years old..getting a screw fixed or not sure for one of the leg bones above abdomen..do you people think it will get healed for him..you people have any suggestions for him about dos and donts? sorry to divert from
  • [15:24:41] <NotTooDumb3> topic..
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  • [15:26:24] <smplman> NotTooDumb3: my grandma is around that age and she has had both of her knees replaced and she is fine. I guess it depends on the severity of the accident. I wish your father well.
  • [15:27:05] <NotTooDumb3> thank you..it might depend as well on their overall health also i guess
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  • [15:59:30] <NotTooDumb3> smplman, bye...
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  • [17:24:42] <supjigator> Hi.
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  • [17:26:05] <supjigator> I've dug around google searching for how to fix audio on the XM. Tried mixer settings etc but all I seem to get is garbled audio. Using debian squeeze with linux-2.6.38-rc7 with patches from rcn-ee
  • [17:29:12] <djlewis> supjigator: just curious, you know it is a line level out and mic level in?
  • [17:29:29] * NotTooDumb3 (NotTooDumb@124.125.45.21) has joined #beagle
  • [17:30:15] <djlewis> so line out should work with a pair of powered PC speakers and to record you need the proper feed into it.
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  • [17:31:32] <supjigator> I'm just using a set of headphones.
  • [17:31:53] <supjigator> I've had it working before using a older version of unbuntu.
  • [17:32:01] <djlewis> headphones are not designed for line out
  • [17:32:05] <supjigator> Just doing the simple speaker-test -c 2
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  • [17:32:53] <djlewis> headphones have little speakers that expect a amplifier
  • [17:33:17] <supjigator> same result with amp speakers.
  • [17:33:40] <supjigator> Putting a old unbuntu sd card back in I hear "left speaker" and "Right speaker"
  • [17:34:26] <_av500_> djlewis: it will be less volume but not "garbled"
  • [17:34:56] * menomc (~amery@shell.opensde.net) Quit (Ping timeout: 276 seconds)
  • [17:35:00] <_av500_> supjigator: not much we can do, few deBBian users here
  • [17:35:01] <djlewis> I know, just trying to get it clear
  • [17:36:04] <supjigator> k thanks.
  • [17:36:14] <djlewis> if levels were driven to max for headphones then I would expect some distortion as well thru a amp
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  • [17:36:54] <supjigator> djlewis: I'm pretty sure its a kernel - > ALSA issue.
  • [17:37:59] <supjigator> something seems to be broken with debian arm and not unbuntu. I assume XM with angstrom should work with no problems?
  • [17:38:10] <_av500_> should
  • [17:38:23] <_av500_> garbled sound can be bad L/R clock polarity
  • [17:38:38] <_av500_> er, bad bit clock
  • [17:40:22] <supjigator> I'll just switch distros real quick to see if audio works. Thanks.
  • [17:46:17] * eFfeM (~frans@j200125.upc-j.chello.nl) has joined #beagle
  • [17:46:21] <djlewis> gee, when the kids of america are in school I get better internet speed :)
  • [17:47:26] <mru> it's a long time since I noticed any variation by time of day
  • [17:47:35] <mru> I think the networks are better here in europe
  • [17:47:46] <djlewis> must be
  • [17:48:19] <djlewis> ours is so commercial with each entity blocking the next it is stupid.
  • [17:49:43] <djlewis> now many isp's are also media providers and they block the other guys media.
  • [17:49:59] <djlewis> Might not be my problem, but it is stupid from my pov
  • [17:52:45] * topfs2 (~topfs2@xbmc/staff/topfs2) has joined #beagle
  • [17:53:41] <djlewis> I doo feel we are placing more demand on our infrastructure than it can provide.
  • [17:53:58] * jevin (~jevin@pal-161-017.itap.purdue.edu) has joined #beagle
  • [17:54:25] <_av500_> djlewis: you on cable or dsl?
  • [17:55:03] * grund (~grund@66.43.64.66) has joined #beagle
  • [17:55:06] <djlewis> dsl 1.5M dn 300 up
  • [17:55:30] <_av500_> 1.5 dn?
  • [17:55:35] <_av500_> you are on morse
  • [17:56:46] * jevin (~jevin@pal-161-017.itap.purdue.edu) Quit (Client Quit)
  • [17:57:24] <djlewis> down = 3584000(bits/sec), up = 768000(bits/sec)
  • [17:58:09] <djlewis> here they make false claims about their so-called digital cable speeds.
  • [17:58:51] <djlewis> idots can charge you more for going through old copper lines but putting fiber from pole to you home
  • [17:59:19] <djlewis> the back to copper
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  • [18:00:38] <djlewis> here on my mountain my choices are dsl or satellite or dialup or p-p wifi (marginal) or none
  • [18:01:17] * mctouch (~mctouch@cpc5-sgyl27-2-0-cust167.sgyl.cable.virginmedia.com) Quit (Ping timeout: 246 seconds)
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  • [18:03:07] <jkridner|work> sakoman__: your SD card article doesn't show up in your RSS feed.
  • [18:03:45] <sakoman__> jkridner|work: I'll take a look later today. thanks!
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  • [18:31:51] <ds2> morning
  • [18:34:08] <supjigator> Is there a easy way to force the GPIO pins low by default rather than high on boot?
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  • [18:41:44] <jkridner|work> morning ds2!
  • [18:42:05] <jkridner|work> supjigator: on boot in u-boot?
  • [18:48:11] <supjigator> Yeah.
  • [18:48:39] <supjigator> Will that set them to low on power on?
  • [18:52:31] <supjigator> I've been bouncing between OMAP_MUX and uboot methods but seems that kernel is being worked on at the moment.
  • [18:54:15] * mrc3__ (~ddiaz@189.157.107.198) Quit (Read error: Operation timed out)
  • [18:55:37] <ds2> the mux's are not sufficient if you absolutely need it to be pulled down at power on
  • [18:56:21] <ds2> on reset, the mux registers are initialized one way and if they differ from what you want, there will be a delay before it gets to your code
  • [18:57:21] <supjigator> ds2: Thanks. I'll just reverse it in hardware at the level shift since they all seem to default to high.
  • [18:57:25] <djlewis> which can cause robots to run amuck!
  • [18:57:39] <ds2> do not use "seems". Confirm with datasheet
  • [18:57:52] <ds2> design for the worse/corner cases.
  • [18:58:16] <mru> unintended acceleration ftw
  • [19:02:26] <arc_mat> supjigator: no, the datasheet will tell you which pins default to low and which default to high at startup
  • [19:02:45] <arc_mat> supjigator: a common mistake in hardware design that people then tend to fix will strong pull resistors :)
  • [19:03:49] <djlewis> i'd rather modify my external components to work with defaults than force a port to my bidding.
  • [19:04:22] <arc_mat> yes, but you know, deadlines ...
  • [19:04:38] <ds2> arc_mat: Mmmmm high current, glowing red resistors... ;)
  • [19:05:10] <arc_mat> ds2: heh :) I doubt that an omap i/o port can source that much power :)
  • [19:05:30] <ds2> arc_mat: I didn't say it will remain an operational I/O port ;)
  • [19:06:25] <arc_mat> ds2: well for omap at least, the bootup default state is realized by enabling the internal pull resistors, which are really current sources and can drive like 20-100 microamps
  • [19:07:15] <arc_mat> so it's totally realistic to enforce a default with an external pull
  • [19:07:20] <ds2> arc_mat: *nod*
  • [19:07:33] <arc_mat> only that this backfires as soon as you attempt to go idle ;)
  • [19:08:10] <ds2> make everything serial and require intelligence on both ends to wake it up ;)
  • [19:08:31] <arc_mat> there's this strange "design feature" that forces software to switch the ports into safe mode and enable the pulls to maintain the state :)
  • [19:09:32] <arc_mat> wow, patching the toolchain worked and now its building
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  • [19:09:39] <arc_mat> I guess I'll go home, this can take a while
  • [19:09:48] <ds2> get a faster build machine? ;)
  • [19:10:03] <ds2> say a 100terahertz box with a few terabytes of ram? ;)
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  • [19:11:01] <arc_mat> nah, that will only affect my closing time ;)
  • [19:11:14] <arc_mat> now I have a reason to leave and go home
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  • [19:37:10] <djlewis> sd cards do make a difference! i am into this one already 1.5 hours and it is not done configuring.
  • [19:37:27] <djlewis> PNY 4G C4
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  • [19:50:59] <sakoman__> jkridner|work: now you should be able to subscribe to all new articles in addition to just front page articles
  • [19:51:04] <djlewis> oh, 1h58m to logon prompt
  • [19:52:35] <djlewis> well, not the worse ;P
  • [19:53:00] <sakoman__> djlewis: you could have predicted that from my performance tables :-)
  • [19:53:20] <djlewis> i forgot :-D
  • [19:53:30] <djlewis> looked after ...
  • [19:54:01] <sakoman__> off to lunch, back later
  • [19:56:03] <djlewis> cool, i2c-2 is a happy camper again
  • [20:09:38] * ogra (~ogra@ubuntu/member/ogra) Quit (Ping timeout: 276 seconds)
  • [20:13:15] <supjigator> Hmm. Appears beagle xm audio works fine with alsa 1.0.24 but not 1.0.23
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  • [20:20:52] <vielster> Thought I'd take one more shot at this here before running to the TI support page
  • [20:21:22] <vielster> I'm getting really poor I/O performance to L3 and L4 peripherals on the OMAP
  • [20:22:15] <vielster> Best case, I can access peripherals around 5MHz
  • [20:23:16] * peabody124 (~peabody12@128.249.96.21) Quit (Quit: peabody124)
  • [20:23:36] <vielster> I would expect something closer to the L4_ICLK of 83MHz
  • [20:24:12] <mru> what peripherals, how are you accessing them, and how are you measuring the speed?
  • [20:24:46] <vielster> SPI, DMA4, GPMC mapped devices
  • [20:25:08] <vielster> I'm using GPTIMER3 to time 100000 reads from the devices
  • [20:26:19] <vielster> example volatile uint32_t *dma = (uint32_t *)DMA4_BASE_ADDRESS;
  • [20:27:04] <vielster> start_profile_timer();
  • [20:27:10] <vielster> for(i = 0; i < 100000; i++) *dma;
  • [20:27:24] <vielster> end_profile_timer(); dt = get_profile_time();
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  • [20:28:58] <mru> and the result?
  • [20:30:41] <vielster> DMA Clock 4.3678MHz (22895uS)
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  • [20:36:38] <mru> a single read transaction takes much more than one bus cycle
  • [20:37:43] <mru> sending the read command uses one, then you have some latency in the target, then reading the result back uses at least one bus cycle
  • [20:37:54] <mru> and that's not counting latency in the MPU-L3 interface
  • [20:38:09] <mru> you're measuring the time of a complete round-trip request to the device
  • [20:46:31] <vielster> yes....i'm trying to get an idea of read/write latency
  • [20:48:54] <vielster> inside of an ISR, for say the UART, I have to read a status flag from the device, then write several bytes into the device
  • [20:50:09] <vielster> if each of these accesses takes on the order of 250us, the ISR could take tens of microseconds
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  • [20:55:26] <vielster> sorry...250ns per access
  • [20:56:27] <jkridner|work> sakoman__: thanks, I put it in the feed.
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  • [20:57:06] <jkridner|work> I'm pretty happy that Cloud9 runs on the BeagleBoard now. :) back to looking at Koen's release candidates.
  • [20:57:19] <jkridner|work> http://blog.hangerhead.com for the Cloud9 info.
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  • [21:01:14] <vielster> so mru, i take it that a 250ns access time to a peripheral is expected then?
  • [21:01:56] <vielster> (roughly 20 L4 clks)
  • [21:03:40] <mru> dram read latency is about 160ns
  • [21:05:18] <mru> with 200MHz L3
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  • [21:41:07] <vielster> 200MHz L3...is that on an XM?
  • [21:41:29] <mru> yes
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  • [21:42:59] <vielster> OMAP3530 is limited to 166MHz (to my knowledge), so this would explain some of the delta
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  • [21:45:12] <bernard_1> rick_: hey, were you asking on the list about dfu-util?
  • [21:46:36] <vielster> Damn...that's pretty poor I/O performance...
  • [21:49:32] <mru> why did you think caches were invented?
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  • [21:53:17] <koen> mru: to hide things
  • [21:54:10] <mru> latency, specifically
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  • [22:11:42] <vielster> I'm used to working with microcontrollers which usually have a much more efficient path to I/O...but they also don't have such screaming clock speeds
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  • [22:13:48] <vielster> mru: I assumed it would be slower, but thought that with an 83MHz L4 interconnect, we'd see something more around 50ns
  • [22:14:36] <mru> latency is introduced in a number of places
  • [22:16:02] <mru> microcontrollers are much simpler
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  • [22:29:41] <JJ_> i wanted to use the beagle board for a tablet styled project. i'm having trouble buying an lcd screen and touchscreen overlay. which screens + touchscreen overlays are compatible? thanks
  • [22:30:06] <ds2> any :D
  • [22:30:19] <ds2> pick one and use it
  • [22:30:54] <JJ_> i mean as in connected to the board, in an enclosure, not connecting to an external screen
  • [22:31:32] <ds2> JJ_: i.e like this - http://www.hy-research.com/beagle_tab7.html ?
  • [22:31:34] <ds2> :D
  • [22:31:56] <ds2> prehaps you should start with size and your other requirements ;)
  • [22:35:13] <JJ_> well maybe about 9/ 10 inch screen
  • [22:35:24] <JJ_> and either capacitive or resistive
  • [22:35:27] <JJ_> i dont really mind
  • [22:35:54] <ds2> that should be pretty straight forward. almost any screen can work if you can get data for them
  • [22:36:35] <JJ_> where would i get data for them?
  • [22:36:39] <ds2> when it comes down to it, LCDs are fancy shift registers with different front ends and the OMAP3 controller can generate quite a few formats
  • [22:36:45] <ds2> from the mfg of course :D
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  • [22:37:12] <djlewis> good luck with that ;)
  • [22:37:56] <ds2> djlewis: it really isn't that hard for new screens...recycling ones is the tricky part
  • [22:38:22] <djlewis> i run into the word quantity
  • [22:38:54] <ds2> that isn't much of a problem
  • [22:39:10] <ds2> it is just a matter of cost
  • [22:39:10] <djlewis> go the r&d approach?
  • [22:39:25] <djlewis> beg
  • [22:39:41] <JJ_> for the cost im obviously trying to keep it low but am willing to buy new materials
  • [22:39:54] <JJ_> just dont want to buy a screen and touchscreen and have it not work...
  • [22:40:07] <ds2> touchscreens are semi-universal
  • [22:40:41] <ds2> a resistive touch screen is basically 4 resistors wired up in a star config
  • [22:41:18] <ds2> cap is a bit more complex as you are measuring charge
  • [22:41:55] <JJ_> so could i use for instance a12" elo accutouch 5 wire touch screen and just a generic 12" lcd and it will most likely work?
  • [22:42:49] <ds2> assuming you can get to the wires, yes. most 5wire screens can be mod'ed to be treated as a basic 4 wire screen
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  • [22:43:07] <ds2> these things are all fundamentally, very simple things
  • [22:43:46] <JJ_> how would i connect those two to a beagleboard then? because all the projects ive seen people are jsut using hdmi or vga to connect to a screen
  • [22:44:06] <ds2> ewwwwwwwwwwwww HDMI ;)
  • [22:44:29] <ds2> just do it. the signals are all there.
  • [22:45:33] <djlewis> there have been several do it and post their work.
  • [22:46:26] <ds2> this is all "obvious" stuff. start with the TRM
  • [22:46:39] <ds2> understand how a touch screen and a LCD works. then jump in
  • [22:47:07] <ds2> this is your basic Jr/Sr year projects
  • [22:48:02] * mru wants an inductive touchscreen
  • [22:48:42] <ds2> you fix the EMI problems...
  • [22:48:43] <ds2> ;(
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  • [22:50:10] <JJ_> i understand how both touchscreen and lcd's work, i'm just not sure about the wiring (as im used to using cables like vga, dvi, hdmi etc. for computers)
  • [22:50:36] <JJ_> but mainly its the software issue as im not so great at it
  • [22:50:37] <ds2> then you must realize that the "wiring" is just translations
  • [22:51:05] <ds2> software is trivial. takes all of 10 mins (most of it is spent compiling/copying) to enable
  • [22:51:41] <JJ_> would the software differ greatly from screen to screen though?
  • [22:53:15] <ds2> depends... if you have screen that needs gamma constants loaded, then you'd need to add that...most dumb screens are pretty straight forward - enable's and timing info
  • [22:54:56] <JJ_> so i could pretty much pick any 12" 4/5 wire resistive touchscreen, and a 12" lcd and it would be fairly easy to set up?
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  • [22:57:17] <ds2> JJ_: if you can get data on the screen. you seem to be getting bigger and bigger ;) 9-10 now 12"
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  • [22:58:45] <JJ_> yeah i just looked up and couldn't only find fairly large ones available to me in the uk and 12" seems to be the smallest so i'll have to make do.
  • [22:59:25] <mru> JJ_: what size would you like?
  • [22:59:39] * JJ_ (519fff1d@gateway/web/freenode/session) Quit (Changing host)
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  • [22:59:45] <JJ_> i don't really mind to be honest but i would say 9-13"
  • [22:59:53] <JJ_> this is my first beagleboard project
  • [23:00:08] <mru> maybe one of these will fit: http://www.lilliputuk.com/
  • [23:00:09] <JJ_> so getting something half decent and working is my priority
  • [23:00:13] <mru> all integrated
  • [23:01:34] <ds2> wonder if those cases have enough room to toss in a BB
  • [23:01:51] <mru> you can always strip the case
  • [23:01:58] <aholler> just use chewing gum
  • [23:02:11] <JJ_> if i used one of them, what would i need to do in order to connect the BB and be good to go?
  • [23:02:21] <mru> plug it in
  • [23:03:01] <JJ_> and it would work straight away? i wouldnt need any software installed (apart from my OS)
  • [23:03:12] <mru> the displays are hdmi
  • [23:03:16] <mru> usb for the touchscreen
  • [23:03:23] <mru> don't know what protocol
  • [23:05:42] <JJ_> is there a way of connecting them straight to the board as if i was buying the parts, i.e. no connecting into the port and being connecting like other tablets or laptop devices?
  • [23:06:15] <ds2> it is a nice plastic case, why not reuse it if there is room
  • [23:10:12] <aholler> maybe just buying a tablet would do the trick too ;)
  • [23:10:38] <ds2> it is trivial to build one so why ;)
  • [23:11:53] <JJ_> i mean as instead of the vga or hdmi connection, could you connect it buy ribbon cable?
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  • [23:14:19] <ds2> redo the connectors
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  • [23:15:55] <djlewis> ds2: :)
  • [23:16:00] * JJ_ (519fff1d@gateway/web/freenode/ip.81.159.255.29) Quit (Ping timeout: 245 seconds)
  • [23:18:02] <ds2> djlewis: I am serious...
  • [23:18:52] <djlewis> hey, I like it that you are encouraging him to do this project.
  • [23:19:06] <djlewis> It is in fact, hardware wise, one of the simpler things to do.
  • [23:19:58] <djlewis> level convertors, a couple doezen connections and voila
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  • [23:22:30] <ds2> no level converters if you pop the HDMI connectors
  • [23:23:20] <djlewis> oops, did I give out the secrets... my bad are we seeing more 1.8V lcd interfaces now?
  • [23:24:38] <ds2> djlewis: eh? the liliput monitors are HDMI
  • [23:25:12] <djlewis> but i thought you were encouraging direct interface to LCD
  • [23:25:29] <djlewis> using the hdmi is too easy.
  • [23:26:12] <ds2> djlewis: normally, I'd but since mru pointed out the HDMI interface...
  • [23:26:51] <djlewis> ds2: well, i kinda hadn't noticed you had gone over to the dark side ;)
  • [23:27:45] <djlewis> seriously, given the option and if the power requirements and cost were within my budget then i would too.
  • [23:28:44] <ds2> djlewis: =)
  • [23:29:13] <ds2> regular LCDs are simple to deal with but if folks wants to use others...
  • [23:29:36] <ds2> if I had it my way, the HDMI and QFP410 would be destuffed ;)
  • [23:29:50] <djlewis> ds2: well i never guessed you were on that track, what with your solid background for roughing it.
  • [23:30:01] * mpoirier (~quassel@S0106002369de4dac.cg.shawcable.net) Quit (Ping timeout: 260 seconds)
  • [23:30:32] <ds2> djlewis: I'd be happy to sell rope, lumber, and plans for a gallows if so requested ;)
  • [23:31:22] <mru> ds2: you don't get many returning customers that way...
  • [23:31:34] <djlewis> that might be handy for me if it is automatic ;)
  • [23:31:35] <ds2> mru: true
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  • [23:31:53] <ds2> mru: but the customer is always right ;)
  • [23:31:58] <djlewis> but then again . . .
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  • [23:39:24] * djlewis has many more put foot in mouth and chew vigorously than hanging myself moments.
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  • [23:46:58] <dancios> gst-rtsp server ? i try to sending 640x480 or higher sresolution XD and have no idea hot to use it
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  • [23:47:23] <vielster> mru...you still around?
  • [23:48:38] <vielster> when you stated that 160ns access time to DRAM, was that even on the L3 interconnect?
  • [23:48:54] <mru> the dram controller sits on L3
  • [23:49:47] <mru> I measured the time for an LDR instruction followed by an arithmetic instruction using the loaded value
  • [23:49:59] <mru> using an access pattern likely to miss cache a lot
  • [23:50:33] <dancios> how to stream video in network gst-ti pipline from examples didn't work ;( i've got logitech webcam pro 9000
  • [23:50:46] <vielster> gotcha...the DRAM interface is bursted...could that cause the latency number to be higher than a single access?
  • [23:51:36] <vielster> also, there is inherent latency in the DRAM itself
  • [23:51:44] <mru> yes, of course
  • [23:51:50] <mru> the same is true for any peripheral
  • [23:52:12] <mru> the ram on the beagle has cas latency 3 btw
  • [23:52:28] <mru> base clock is same as L3
  • [23:52:45] <mru> the L3 clock is also the ddr clock
  • [23:54:16] <vielster> peripherals (like a UART) are not very complex, and thus should have low latency
  • [23:54:36] <mru> they might also have a much lower fclk than L3
  • [23:55:30] <mru> there's little point in making a uart interface extremely low latency since the external interface is rather slow anyway
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  • [23:58:27] <mru> what exactly are you trying to achieve?
  • [23:58:45] <vielster> I'm interfacing an external CAN controller via SPI
  • [23:59:04] <vielster> the CAN bus is pretty heavily utilized
  • [23:59:33] <mru> spi can do dma