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  • [00:01:05] * Topic is 'http://beagleboard.org/chat has a guide on how to ask questions and links to the logs | never ask to ask, just ask | be patient | pastebin a boot log | http://ahsoftware.de/Beaglebone_Black_Boot_explained.svg | http://beagleboard.org/latest-images | http://beagleboard.org/Support/bone101 | direct bonescript/node.js questions to #beagle-bonescript | books: http://bit.ly/bbb-books'
  • [00:01:05] * Set by jkridner!~jkridner@pdpc/supporter/active/jkridner on Fri Jan 30 15:50:45 UTC 2015
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  • [06:57:18] <ThanhNK> now i'm in development process with panther board (DM3730), and i'm using ti-sdk for beagle board to customize linux. but it's not operate successfully
  • [06:57:48] <_av500_> if you are using the TI SDK, you should ask TI
  • [06:57:49] <ThanhNK> are there any one who can help me to resolve :(
  • [06:57:53] <_av500_> yes, TI
  • [06:57:54] <ThanhNK> plz :(
  • [06:58:05] <_av500_> well, the DM3730 is a few years old
  • [06:58:14] <_av500_> what do you expect?
  • [06:58:27] <_av500_> also, you dint ask a proper question at all
  • [06:59:02] <ThanhNK> i want to customize th uboot and kernel of beagle board for pantherboard
  • [06:59:28] <ThanhNK> but i don't know, how to start :(
  • [06:59:41] * TheoMurpse (~TheoMurps@cpe-72-191-48-158.satx.res.rr.com) Quit (Quit: Leaving)
  • [06:59:57] <_av500_> why?
  • [07:00:07] <_av500_> why not use the ready made kernel of the TI SDK?
  • [07:01:26] <ThanhNK> yes, i did it. but there are some problem.
  • [07:01:27] <ThanhNK> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)
  • [07:01:51] <ThanhNK> and i dont' know, how to fix it
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  • [07:02:17] <_av500_> is this a hobby project?
  • [07:02:36] * j0rd_ (~j0rd_@unaffiliated/j0rd-/x-9112651) has joined #beagle
  • [07:03:32] <ThanhNK> no, it's my company proj
  • [07:04:11] <ThanhNK> @_av550 : do you have skype ?
  • [07:04:14] <ds2> who makes the pantherboard?
  • [07:04:23] <_av500_> http://www.edwireless.com/ap-dm37.php
  • [07:04:30] <_av500_> ThanhNK: what for?
  • [07:05:05] <_av500_> ds2: not sure
  • [07:05:27] <ThanhNK> Panther board jorjin
  • [07:05:49] <nerdboy> you should have a TI support engineer
  • [07:06:07] <_av500_> not sure TI has any left for DM37
  • [07:06:16] <ds2> it is a kernel. sources are available
  • [07:06:17] <nerdboy> plus there are TI forums for their eval boards/sdks
  • [07:06:18] <ds2> what more do you need.
  • [07:06:25] <ds2> kernel is easy
  • [07:06:30] <ds2> userland is what is painful and hard
  • [07:06:33] <nerdboy> sometimes the forums are even useful...
  • [07:07:12] * Ferris (~Ferris@c-71-234-4-122.hsd1.ct.comcast.net) Quit (Ping timeout: 246 seconds)
  • [07:08:13] <nerdboy> or maybe your manager can get you a newer eval board with current support...
  • [07:08:48] <ThanhNK> :(
  • [07:08:50] <ds2> who cares about support. use the source.
  • [07:09:46] <nerdboy> didn't say he was using yocto/oe
  • [07:10:11] <ThanhNK> @ds2 : do you know , how to customize linux for a new board ?
  • [07:10:14] <tbr> looks like there even are some sort of sources for that thing
  • [07:10:26] <nerdboy> if there's machine support then good to go
  • [07:10:52] <tbr> 2.6.37 - ah, the stale smell of vintage kernels
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  • [07:11:55] * nerdboy would wager other people here do the for a living
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  • [07:12:13] <nerdboy> board bring-up, training, etc
  • [07:12:22] <ThanhNK> :(
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  • [07:13:51] <_av500_> tbr: of course there are sources
  • [07:14:04] <_av500_> how many variations of the TI ref design are there....
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  • [07:15:13] <nerdboy> ds2: it's not about needing the support, rather unsupported machines get no more support upstream
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  • [07:15:25] <_av500_> just use 2.6.37
  • [07:15:39] <nerdboy> sometimes they even remove existing machine support moving forward
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  • [07:16:10] <nerdboy> could be stuck forever on an old/edgy fork
  • [07:16:25] <ds2> you just do it.
  • [07:16:36] <ds2> nerdboy: then back port
  • [07:16:45] <nerdboy> you just get newer/supported piece of hardware...
  • [07:17:08] <ds2> do you want to chase and debug new kernels or do you want working hw?
  • [07:17:25] <ds2> pick kernel release for your hw. debug it and backport stuff as needed.
  • [07:17:32] <nerdboy> 1) easier said than done, 2) they will *not* let you cluebat the manager in the parking lot
  • [07:18:17] <nerdboy> no, i want to abandon the unsupported crap and move forward
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  • [07:20:25] <ds2> nerdboy: it is easy. I do that all the time.
  • [07:20:55] <ds2> go enjoy your DT of the hour battles
  • [07:21:11] <_av500_> version chasing is futile
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  • [07:21:19] <ds2> I'll enjoy my working HW.
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  • [07:24:02] <_av500_> how boring :)
  • [07:24:27] <nerdboy> doesn't sound lie you inherited a mess as your custom machine "release" layer on top of oe-classic
  • [07:24:33] <nerdboy> *like even
  • [07:25:19] * nerdboy listens to the voice of experience
  • [07:25:39] <ds2> no OE
  • [07:25:40] <_av500_> nerdboy: so you want to untangle the mess?
  • [07:26:42] <_av500_> are you on dm37 too?
  • [07:26:59] <nerdboy> was on dm8168
  • [07:27:07] <nerdboy> and no, i do not
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  • [07:30:11] <_av500_> ah
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  • [09:04:45] <test___> Is to possible to communicate beaglebone black and android device via usb cable
  • [09:05:47] <test___> Shall any one know about this
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  • [09:08:25] <test___> is it possible to communicate beaglebone black with android device via usb cable in android
  • [09:08:48] * cityoflights2 (~nivw@bzq-218-29-26.cablep.bezeqint.net) has joined #beagle
  • [09:11:54] <_av500_> sure
  • [09:11:58] <_av500_> its all SW
  • [09:12:21] <test___> can any one know about this. because in the last month i'm searching about it. can any one help me
  • [09:12:22] <_av500_> look for Android ADK
  • [09:12:43] <_av500_> http://elinux.org/BeagleBoard/GSoC/BARD
  • [09:12:53] * Ferris (~Ferris@c-71-234-4-122.hsd1.ct.comcast.net) Quit (Ping timeout: 256 seconds)
  • [09:13:09] <test___> not in linux
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  • [09:13:16] <_av500_> i you are the same guy that asks here every wekk, we told you all that before
  • [09:13:18] <_av500_> what?
  • [09:13:19] <test___> is the windows
  • [09:13:24] <_av500_> what?
  • [09:13:27] <_av500_> what runs windows?
  • [09:13:30] <_av500_> your BBB?
  • [09:13:35] <test___> no
  • [09:13:35] <_av500_> or your android device?
  • [09:13:53] <cityoflights2> doe the BBB ethernet support hot plug?
  • [09:13:54] <test___> i should install
  • [09:14:05] <test___> android on
  • [09:14:05] <_av500_> cityoflights2: it should
  • [09:14:07] <test___> bbb
  • [09:14:20] <test___> and application should be written in
  • [09:14:26] <test___> eclipse
  • [09:14:31] <_av500_> and?
  • [09:14:32] <test___> in windows
  • [09:14:35] <_av500_> android on BBB exists
  • [09:14:39] <cityoflights2> I mostly use a wifi connected to the usb, and see many dhclient messages in the syslog
  • [09:14:44] <_av500_> just copy the image
  • [09:14:58] <cityoflights2> I would prefer to have the dhclient start only when eth0 is plugged
  • [09:14:59] <_av500_> and android apps can be written on linux, mac, windows
  • [09:15:21] <test___> I want to communicate via usb cable
  • [09:15:26] <_av500_> with what?
  • [09:15:33] <test___> is that any drivers or any
  • [09:15:41] <_av500_> communicate with what?
  • [09:15:41] <test___> thing else should
  • [09:15:55] <test___> install in bbb
  • [09:15:58] <test___> or phone
  • [09:16:06] <_av500_> communicate with what?
  • [09:16:35] <test___> communication with bbb and android phone
  • [09:16:38] <woglinde> cityoflights2 install ifplugs
  • [09:16:43] <test___> via usb cable
  • [09:16:44] <_av500_> and both run Android?
  • [09:16:47] <woglinde> cityoflights2 I meant ifplugd
  • [09:16:53] <test___> yes
  • [09:16:56] <_av500_> ah
  • [09:17:02] <_av500_> why not say that from the start
  • [09:17:03] <test___> both the devices are android
  • [09:17:05] <cityoflights2> isn't debian coming with this installed?
  • [09:17:27] <woglinde> cityoflights2 I do not know
  • [09:17:35] <_av500_> test___: there is nothing in android for 2 devices to talk to each other
  • [09:17:36] <woglinde> but for sure it is not enabled by default
  • [09:17:59] <_av500_> how good are your kernel hacking skills?
  • [09:18:04] <woglinde> av500 is rxtx usable on android?
  • [09:18:10] <test___> I'M NEW IN ANDROID
  • [09:18:12] <_av500_> woglinde: and then? over what serial?
  • [09:18:16] <_av500_> test___: thats bad
  • [09:18:17] <woglinde> yes
  • [09:18:24] <_av500_> test___: ask for a different project
  • [09:18:33] <woglinde> test___ get another task from your supervisor
  • [09:18:36] <_av500_> woglinde: your phone has a serial?
  • [09:18:42] <_av500_> exposed to android?
  • [09:18:42] <test___> NO
  • [09:18:43] <woglinde> usb.serial?
  • [09:18:46] <woglinde> haha
  • [09:18:49] <_av500_> in android?
  • [09:19:02] <woglinde> if you compile the kernel right?
  • [09:19:10] <_av500_> still not exposed in android
  • [09:19:12] <test___> IS THE COMMUNICATION IS POSSIBLE
  • [09:19:15] <_av500_> sure, jni etc...
  • [09:19:15] <test___> yes
  • [09:19:20] <_av500_> test___: of course it is
  • [09:19:23] <_av500_> its just SW
  • [09:19:27] <_av500_> men flew to the moon
  • [09:19:28] <test___> sw
  • [09:19:36] <woglinde> with software
  • [09:19:37] <_av500_> so we can make two devices talk to each other
  • [09:19:41] <woglinde> and plutonium
  • [09:19:47] <_av500_> not needed here
  • [09:20:08] <test___> can any one give
  • [09:20:09] <_av500_> test___: ok, communicate, what for?
  • [09:20:21] <test___> ideas about this
  • [09:20:29] <_av500_> I gave you some
  • [09:20:33] <test___> k
  • [09:20:38] <_av500_> you could use ADK mode
  • [09:20:47] <_av500_> then the phone does not need to be modified
  • [09:20:57] <_av500_> you will need to add adk host to android/linux on BBB
  • [09:21:11] <_av500_> and expose it as whatever API you like to user space
  • [09:21:16] <test___> is the any drivers or anything
  • [09:21:22] <_av500_> it involved linux kernel hacking
  • [09:21:27] <test___> should install in bbb
  • [09:21:27] <_av500_> yes, I gave you a link to one
  • [09:21:33] <test___> k
  • [09:21:36] <_av500_> no, its not a simple "install"
  • [09:21:45] <test___> k
  • [09:21:48] <_av500_> it, think, think, think, code, test, repeat
  • [09:21:51] <_av500_> it's
  • [09:21:55] <_av500_> and read
  • [09:22:27] <test___> can give me the start up
  • [09:22:37] <_av500_> the what?
  • [09:22:37] <test___> with the communication
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  • [09:22:52] <_av500_> the what?
  • [09:23:02] <test___> is that any tuttiorial
  • [09:23:04] * nonsensickle (~nonsensic@122-59-147-201.jetstream.xtra.co.nz) Quit (Quit: This computer has gone to sleep)
  • [09:23:05] <_av500_> no
  • [09:23:09] <_av500_> there is not
  • [09:23:11] <test___> or
  • [09:23:22] <test___> any thing else
  • [09:23:24] <_av500_> yes
  • [09:23:28] <_av500_> what I gave you
  • [09:23:39] <_av500_> its SW for the BBB to talk to an android device using ADK
  • [09:23:50] <test___> sw means
  • [09:23:54] <_av500_> all you need to do is to make it work with android on BBB
  • [09:24:26] <_av500_> but to answer your question: there is no silver bullet
  • [09:24:28] <woglinde> cityoflights2 please use ifplugd
  • [09:24:31] <woglinde> ups
  • [09:24:38] <woglinde> damn scrolling
  • [09:24:39] <woglinde> sorry
  • [09:24:46] <test___> what
  • [09:25:59] <cityoflights2> thanks
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  • [09:26:58] <test___> communication via usb cable
  • [09:27:03] <cityoflights2> thanks woglinde
  • [09:27:20] <cityoflights2> how to stop using dhclient and use systemd dhcp client?
  • [09:27:21] <_av500_> test___: very soon I will start to ignore you
  • [09:27:49] <_av500_> you did not read a word of what I wrote it seems
  • [09:28:50] <woglinde> cityoflights2 sorry I did not yet looked at the systemd dhpc client
  • [09:28:57] <test___> oops sorry
  • [09:28:59] <_av500_> its awesome
  • [09:29:05] <test___> oops sorry
  • [09:29:10] <woglinde> cityoflights2 are you sure the version in debian already have it?
  • [09:29:32] <woglinde> _av500_ I think he read them
  • [09:29:47] <woglinde> but the brain can not translate them into something useful
  • [09:29:59] <cityoflights2> yep I use RCN jessie
  • [09:30:15] <woglinde> cityoflights2 hm okay
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  • [09:31:03] <woglinde> cityoflights2 hm okay when you are using systemd anyway I think you do not need ifplugd
  • [09:31:07] <test___> oops sorry
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  • [09:31:34] <woglinde> systemd has some signals when ethX is connected
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  • [09:31:56] <woglinde> https://wiki.archlinux.org/index.php/systemd-networkd
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  • [09:35:25] <hitlin37> if you put kenel/driver related stuff in your cv could give you some funny subject lines in email. the good ones i got are : driver needed. low-level opportunities..
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  • [09:36:13] <rob_w> uh , channels is running hot already ..
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  • [09:36:26] <rob_w> hardly manage to read the backlog today .. wow
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  • [09:55:42] <test___> hello
  • [09:56:14] <tbr> OHAI!
  • [09:56:41] * sidbh (~Siddharth@123.201.22.207) Quit (Ping timeout: 265 seconds)
  • [09:56:48] <test___> is that any one know
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  • [09:57:01] <test___> how to install adk on bbb
  • [09:57:30] <tbr> is your BBB the hardware revision with built in flux compensator?
  • [09:58:18] <test___> yes
  • [09:58:56] <tbr> ok, you'll have to calibrate it first, else it will not work
  • [09:59:17] <test___> ok
  • [09:59:44] <test___> can you give me the steps
  • [09:59:52] <test___> to install adk on bbb
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  • [10:00:12] <tbr> have you calibrated the flux compensator on your device?
  • [10:00:35] <test___> no
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  • [10:01:10] <tbr> oh, you'll have to do it first. It's in the enclosed BBB-Fx special edition booklet on page 26.
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  • [10:03:51] <test___> den
  • [10:04:43] <test___> install adk on bbb
  • [10:05:26] <tbr> did you do the exact steps for calibration?
  • [10:05:35] <tbr> was the result 54 or 42?
  • [10:05:57] <test___> no
  • [10:06:07] <test___> i didn't get
  • [10:06:14] <test___> any of the
  • [10:06:17] <test___> result
  • [10:06:40] <tbr> but you followed the exact steps? they are on page 26
  • [10:07:10] <test___> give me the link of that
  • [10:07:13] <test___> page
  • [10:07:35] <tbr> it's not online. The special BBB-Fx edition booklet was only included with the device itself.
  • [10:08:07] <test___> how to find that one
  • [10:08:24] <tbr> it should have been together with the device in the box
  • [10:08:49] * vmayoral (~vmayoral@63.Red-79-156-143.staticIP.rima-tde.net) has joined #beagle
  • [10:08:55] <test___> in which folder
  • [10:09:08] <test___> it should seems
  • [10:09:49] <tbr> a little brown booklet, paper. On the back it should say "don't panic" in big and friendly letters. It came with my BBB-Fx in the little box.
  • [10:09:58] <tbr> have you lost it?
  • [10:10:36] * vmayoral (~vmayoral@63.Red-79-156-143.staticIP.rima-tde.net) Quit (Remote host closed the connection)
  • [10:10:37] <test___> yes
  • [10:10:45] <tbr> oh, that's bad, very bad
  • [10:11:17] <test___> what to do?
  • [10:11:25] <tbr> you see, each of them has the right individual values for the Board printed in it.
  • [10:11:52] <test___> k
  • [10:11:54] <tbr> if you lost it then you won't be able to perform the essential Layer-8 to BBB recalibration process
  • [10:12:20] <tbr> Basically that means you won't be able to use the FX special edition features
  • [10:12:38] <tbr> so it becomes a regular BBB
  • [10:12:41] <test___> is that any other way way to install
  • [10:12:47] <test___> adk on bbb
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  • [10:12:53] <test___> for the
  • [10:12:54] <tbr> oh, yes, but it would have been so much easier
  • [10:13:02] <test___> usb communication
  • [10:13:06] <tbr> now you will actually have to figure it out yourself
  • [10:13:23] <test___> how
  • [10:13:49] <tbr> the truth of the exact steps is out there, somewhere
  • [10:14:12] * mhaberler (~mhaberler@089144223190.atnat0032.highway.bob.at) Quit (Read error: Connection reset by peer)
  • [10:14:23] <test___> communication via usb cable
  • [10:14:40] <test___> i need to install adk
  • [10:14:45] <test___> oon bbb
  • [10:16:52] <test___> is that any shoul help me
  • [10:17:05] <tbr> you could buy support for the fx-autocallibrator-kernal, that has built in ADK support
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  • [11:44:37] <harsh> hello ... i am a newbie... i am trying to run a C++ program on my BBB. i wrote the program on my computer and then cross compiled using - arm-linux-gnueabi-gcc-4.7 . i then copied my file to my board but when i try to run the executable file i get "Segmentation Fault". what am i doing wrong ?
  • [11:45:12] <tbr> something
  • [11:45:19] <tbr> standard linux debugging techniques apply
  • [11:46:49] * nerdboy (~sarnold@gentoo/developer/nerdboy) Quit (Ping timeout: 252 seconds)
  • [11:46:54] <harsh> tbr: i tried the compiling a different program using the compiler and its working fine...
  • [11:47:25] <harsh> tbr: why did this segmentation fault occur ?
  • [11:47:44] <tbr> > standard linux debugging techniques apply
  • [11:48:56] <harsh> tbr: the program is working fine on my computer
  • [11:49:05] <harsh> but not on my BBB
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  • [11:50:37] <tbr> so? debug it
  • [11:50:58] <tbr> gdb, strace, and the rest are your friends
  • [11:52:11] <harsh> tbr:alright
  • [11:53:09] * Stefan__ (d5809921@gateway/web/freenode/ip.213.128.153.33) has joined #beagle
  • [11:53:48] <Stefan__> hi, is there any way to set a BB White back to factory settings?
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  • [11:54:44] <tbr> take out the mirco-sd, done
  • [11:55:24] <Stefan__> done, but the power led flash just once and nothing more...
  • [11:57:09] * uv_ (~uv@94-21-23-184.pool.digikabel.hu) has joined #beagle
  • [11:57:28] <tbr> now prepare a fresh micro-sd card, insert it and power it up
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  • [12:02:16] <Stefan__> ok. i prepared a new sd with the openrov cockpit version. still one short flash.
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  • [12:02:46] <tbr> how did you prepare it?
  • [12:03:50] * vmayoral (~vmayoral@63.Red-79-156-143.staticIP.rima-tde.net) Quit (Ping timeout: 252 seconds)
  • [12:04:19] <Stefan__> i write the openROV image on it using win32diskimager. before formatted with SDFormatter
  • [12:05:44] <tbr> and you undompressed the image before that?
  • [12:06:21] <woglinde> Stefan__ serial cable and you see whats wrong on the console
  • [12:06:53] * woglinde wonders why the kids today do not learn about serial cables
  • [12:07:25] <tbr> woglinde: only nation state actors need serial cables
  • [12:07:52] * tbr suspects something about the image or how it's written is wrong
  • [12:07:57] <Stefan__> @tbr yes. file size about 600mb
  • [12:08:00] <tbr> is that image known to boot on a BBW?
  • [12:08:50] <Stefan__> @woglinde-> is not powering up at all. thats why im not able to use RX/TX Com
  • [12:09:26] <tbr> then something about the card or the image is wrong
  • [12:09:32] <Stefan__> it is. was working before with that image (same procedure, same file)
  • [12:09:41] <tbr> Stefan__: if you put the card into a card reader, do you see a small FAT partition?
  • [12:10:05] <woglinde> tbr uhm at least it should print something about, it can not read the MLO
  • [12:11:11] <tbr> was that the "C" thing on UART?
  • [12:11:21] * tbr keeps forgetting
  • [12:12:24] <Stefan__> yes. the SD containing a 87mb FAT patition with a MLO file inside
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  • [12:13:04] <tbr> Stefan__: what did you do to the hardware between when it was working and when it stopped working?
  • [12:13:17] * Tartarus_ (trini@pixelshelf.com) has joined #beagle
  • [12:13:32] <Stefan__> pluged in a usb webcam while boot up
  • [12:13:34] * Tartarus (trini@pixelshelf.com) Quit (Disconnected by services)
  • [12:13:52] <Stefan__> and the ethernet wire
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  • [12:16:51] <Stefan__> i could measure 5V in on P9 Pin 5 and 6
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  • [12:19:20] <tbr> I'd probably try a different card and a different image. just to make sure
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  • [12:24:12] <Stefan__> i try it. will take some minutes
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  • [12:37:06] <Stefan__> done. different sd card, other image... some result
  • [12:37:12] <Stefan__> guess is dead
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  • [12:51:03] <Stefan__> same result. not powering up
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  • [13:03:46] <geekswine_> in arduino we have wiring framework...
  • [13:04:33] <geekswine_> so this framework is just the different files in which work is distributed or something more is there ??
  • [13:05:06] <geekswine_> like wiring_digital, wiring_analog, etc...different files for different tasks...
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  • [13:11:15] <Amil> Can anyone suggest me a Long distance Temperature & Humidity sensor to use with beaglebone black. I used Adafruit DHT22. But that was not capable of transmitting long distance signals. I am looking to use it over 10M with Cat 5 or 6 Cable?
  • [13:13:24] * muka (~muka@174-17-94-123.phnx.qwest.net) Quit (Remote host closed the connection)
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  • [13:18:21] <harsh> i am trying to debug program and i am getting the following result (gdb) run -d Starting program: /home/root/scanapi2/ScanAPI_Ex/ftrScanAPI_Ex -d warning: File "/lib/libthread_db-1.0.so" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load". warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available. Program received signal SIGSEGV, Segme
  • [13:18:55] <harsh> 0xb6d52fdc in pthread_mutex_lock () from /lib/libpthread.so.0
  • [13:19:07] <harsh> can anyone help me ?
  • [13:22:04] <harsh> here is the error http://pastebin.com/8rgnnfus
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  • [13:27:20] <rob_w> harsh: looks like a good old segfault, the rest message you be able to ignore , can you run bt on your gdb after this happens
  • [13:28:13] <rob_w> as a hint, look for misued pointers, or arrays which u index wrong or such
  • [13:28:50] <harsh> rob_w: okay
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  • [13:52:06] <Amil> Can anyone suggest me a Long distance Temperature & Humidity sensor to use with beaglebone black. I used Adafruit DHT22. But that was not capable of transmitting long distance signals. I am looking to use it over 10M with Cat 5 or 6 Cable?
  • [13:53:27] <Humpelst1lzchen> uhm long distance = long cable between bbb and sensor?
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  • [14:05:43] <harsh> is usbfs supported on angstrom ?
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  • [14:07:29] <Guest49149> Hi. Does anyone know anything about the supply issue with the Beagleboard XM?
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  • [14:11:38] <harsh> is usbfs supported on angstrom ?
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  • [15:13:43] <Amil> Humpelst1lzchen: If u are there, yes bro, I need long cables between bb and the sensor.
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  • [16:42:07] <Amil_> Can anyone suggest me a Long distance Temperature & Humidity sensor to use with beaglebone black. I used Adafruit DHT22. But that was not capable of transmitting long distance signals. I am looking to use it over 10M with Cat 5 or 6 Cable?
  • [16:42:39] <Amil_> Distance Between BB and the sensor (10M). Thanks
  • [16:43:49] <_av500_> you need some signal conditioning
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  • [16:46:38] <Amil_> @_av500_: Thanks for the concern on my question bro. As I am new to BB, can you please give me more details if you can?
  • [16:47:06] <Catslab> Amil_: is your sensor on 5V or 3.3 ?
  • [16:49:30] <Amil_> Catslab: it supports from 3-5V bro, So i tried with 5V
  • [16:49:57] <Catslab> on a 10m cable you'll have parasite reflexion at both ends of the cable, so you'll need at least a diode between data and ground to supress them
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  • [16:51:09] <tbr> who knows the datasheet for that sensor might even cover this
  • [16:51:18] <Catslab> tbr nope
  • [16:51:24] <Catslab> just looked at that
  • [16:51:39] <Catslab> and you'll need a small resistance on the dataline
  • [16:52:00] <Catslab> have a look at 1wire network http://www.maximintegrated.com/en/app-notes/index.mvp/id/148
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  • [16:52:27] <_av500_> Amil_: hint: stop the "bro" thing
  • [16:52:53] <Catslab> I was driving ds18b20 on a network of coolant pipes and had to apply that
  • [16:52:57] <Amil_> Catslab: Thanks alot for your information, ill have a look on that
  • [16:53:42] <Amil_> @_av500_: may be the way i've used to, if that was irritating u, i am sorry
  • [16:54:06] <nerdboy> i-wire needs a "repeater" for longer cables, no?
  • [16:54:25] <_av500_> Amil_: np
  • [16:54:30] <nerdboy> i2c maybe 2m depending on cables, etc...
  • [16:55:00] <Catslab> nerdboy: I didn't use any up to 44 meters
  • [16:55:07] <Catslab> 1 wire is slow
  • [16:55:24] <tbr> 1-wire, if properly set up can go quite long distance IIRC
  • [16:55:33] <nerdboy> slow, but made for longer distances
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  • [16:55:51] <Catslab> for i2c you can use signal conditioners
  • [16:56:07] <nerdboy> stuff like i2c is bus protocal, not meant to go very far
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  • [16:56:35] <nerdboy> maybe easiest to put a controller on the sensor end
  • [16:56:45] <ragnar76> Amil_: i'm running a ds18b20 on a 2m wire and from time to time i dont get any data
  • [16:57:06] <Amil_> nerdboy: thanks alot for all ur information, ill try my best. may u reach the ever success in everything u do !!
  • [16:57:08] <stt_michael> Amil_, you may wish to look at http://www.maximintegrated.com/en/app-notes/index.mvp/id/148
  • [16:57:13] <nerdboy> like stick the sensor on arduino or pi
  • [16:57:27] <_av500_> or rahter an 8 pic attiny
  • [16:57:34] <_av500_> and just use RS232 for the data
  • [16:57:56] <Catslab> for i2c I use http://www.ti.com.cn/cn/lit/ds/scps145a/scps145a.pdf
  • [16:59:48] <nerdboy> and watch out for sensors with funky vendor protocol
  • [16:59:53] <nerdboy> like sht1x
  • [17:00:44] * nerdboy shakes his fist at vendors too cheap/dumb to use i2c (or "compatible")
  • [17:00:59] <Amil_> nerdboy: Thanks alot again, ill have a look on these information.
  • [17:01:28] <nerdboy> sht2x sensors are supposedly i2c
  • [17:02:54] <nerdboy> there are notes/readme stuff in our github area from messing with that situation
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  • [17:03:29] <nerdboy> plus a patched RPi.GPIO backend for the sht1x bastard child
  • [17:04:14] <tbr> there was some sort of bitbanging to get SHT1x going on the BBB too IIRC
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  • [17:05:24] <nerdboy> we thought about that...
  • [17:05:51] <nerdboy> seemed easier to get the backend to reset the data/clk pins properly
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  • [17:06:50] <nerdboy> https://github.com/VCTLabs/pi-sensor-test
  • [17:08:27] * nerdboy bought some dude's sensorstick before realizing the sht10 protocol funkiness
  • [17:08:47] <[1]hitman> hello, is there a way to take a screenshot of what my bbb would probably be showing now? i am connected to it using teraterm on my windows pc.
  • [17:09:01] <nerdboy> pays to do your homework first...
  • [17:09:13] * [1]hitman is now known as hitman_
  • [17:09:28] <_av500_> hitman_: you want a screenshot of terraterm?
  • [17:09:58] <nerdboy> if X is up you can grab the root window with import
  • [17:10:08] <nerdboy> (imagemagick)
  • [17:10:37] <hitman_> no, theres no screen connected to my bbb, but suppose if it was connected, the screenshot of that display.
  • [17:10:39] <hitman_> X ?
  • [17:11:03] <nerdboy> set DISPLAY and try it
  • [17:11:39] <hitman_> set DISPLAY to what ?
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  • [17:12:29] <hitman_> i tried using scrot, but it returned error.
  • [17:13:35] <jacekowski> :1
  • [17:13:37] <jacekowski> or :0
  • [17:13:39] <jacekowski> depends
  • [17:15:37] <hitman_> scrot returns with "giblib error: Can't open X display. It *is* running, yeah?"
  • [17:15:51] <nerdboy> ps ax | grep X
  • [17:16:22] <jacekowski> hitman_: it could be sitting on any display
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  • [17:17:56] <hitman_> after " ps ax | grep X" the output was:
  • [17:18:02] <hitman_> http://pastebin.com/nDdxkXm3
  • [17:18:14] <jacekowski> :0 then
  • [17:18:25] <jacekowski> DISPLAY=:0 scrot
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  • [17:20:13] <nerdboy> *should* work
  • [17:22:48] * woglinde (~henning@fb-n15-11.unbelievable-machine.net) Quit (Ping timeout: 265 seconds)
  • [17:24:37] <hitman_> it still returns with that same error.
  • [17:26:07] <hitman_> actually it says :
  • [17:26:08] <hitman_> No protocol specified
  • [17:26:08] <hitman_> giblib error: Can't open X display. It *is* running, yeah?
  • [17:27:05] <nerdboy> does scrot have a -display arg?
  • [17:27:26] <nerdboy> import -display :0 should work
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  • [17:27:50] <hitman_> no, it returns with that "giblib" error.
  • [17:28:02] <nerdboy> what does?
  • [17:28:26] <hitman_> root@beaglebone:~/Desktop# scrot --display
  • [17:28:27] <hitman_> scrot: unrecognized option '--display'
  • [17:28:27] <hitman_> giblib error: Can't open X display. It *is* running, yeah?
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  • [17:29:42] <nerdboy> scrot sucks
  • [17:30:03] <nerdboy> import -display :0 -window root out.png
  • [17:30:19] <nerdboy> might need to install imagemagick
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  • [17:37:22] <hitman_> istalled imagemagick, and then
  • [17:37:23] <hitman_> root@beaglebone:~/Desktop# import -display:0 window root
  • [17:37:23] <hitman_> import.im6: unable to open X server `' @ error/import.c/ImportImageCommand/368.
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  • [17:38:52] <nerdboy> try "-display :0 -window root"
  • [17:39:17] <nerdboy> no typos this time
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  • [17:42:02] <hitman_> root@beaglebone:~/Desktop# import -display :0 -window root out.png
  • [17:42:03] <hitman_> No protocol specified
  • [17:42:03] <hitman_> import.im6: unable to open X server `:0' @ error/import.c/ImportImageCommand/368.
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  • [17:43:25] <nerdboy> and you're sure it's running on display :0 ?
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  • [17:44:00] <hitman_> no, i said, that its not !
  • [17:44:52] <nerdboy> it's sitting at the lightdm login according to your paste
  • [17:45:03] * hamrove (~hamrove@96-8-209-215.block0.gvtc.com) Quit (Ping timeout: 244 seconds)
  • [17:45:19] <nerdboy> you could try enabling the lightdm autologin stuff
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  • [17:47:29] <hitman_> i just want to make it clear that my bbb is not connected to any thing except my pc. (if it was unclear before)
  • [17:47:41] <hitman_> and how to login into that ?
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  • [17:48:22] <hitman_> ok, i'll do that.
  • [17:48:40] <nerdboy> in the config file
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  • [17:58:44] <nerdboy> latest default debain emmc boots into lxde desktop but doesn't have imagemagick
  • [17:59:15] * nerdboy waits for too many packages for a console tool...
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  • [18:03:47] <rcn-ee> nerdboy, we only have 2gb or 4gb of emmc to deal with... not 'everything' is installed..
  • [18:04:47] <nerdboy> rcn-ee: you didn't do all the debian package depends...
  • [18:04:51] <nerdboy> did you?
  • [18:05:19] <nerdboy> just a sec...
  • [18:05:32] <das> Hello, is someone here from .ch and using a swisscom box? Is 192.168.1.1 the box's IP?
  • [18:05:42] * nerdboy pays homage to craig ferguson
  • [18:05:52] <rcn-ee> it's debian: sudo apt-get update ; sudo apt-get install imagemagick
  • [18:05:53] <nerdboy> "or *did* you..."
  • [18:05:58] * calculus (~calculus@gentoo/user/calculus) Quit (Read error: Connection reset by peer)
  • [18:06:22] <nerdboy> yup, just took about 26 packages to get it... ;)
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  • [18:09:40] <hitman_> how will i know that i have logged in ? using "ps ax | grep X" ?
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  • [18:12:22] <nerdboy> you mean "know the X server is running"?
  • [18:13:18] <hitman_> yes. (new to linux )
  • [18:14:23] * DJW is now known as DJWillis
  • [18:14:32] <hitman_> that the lightdm have reached to the main desktop.
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  • [18:14:46] <rcn-ee> hitman_, why don't you just login via x11vnc/etc...
  • [18:15:01] <rcn-ee> the default user get's autologin'ed to lxde desktop by default
  • [18:15:51] * DJW (~djwillis@cpc2-trow6-2-0-cust204.aztw.cable.virginm.net) has joined #beagle
  • [18:16:15] <nerdboy> try su - debian
  • [18:16:18] * DJW is now known as DJWillis
  • [18:16:22] <nerdboy> then run the imprt command
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  • [18:18:16] <hitman_> import.im6: unable to open X server `' @ error/import.c/ImportImageCommand/368.
  • [18:18:17] <hitman_> havent logged in yet . right ?
  • [18:19:21] <Ayman_> Hello There, is BeagleBoard xM obsolete? it looks like no one carries it in stock and no one has a delivery date
  • [18:19:33] <nerdboy> can you login as debian user?
  • [18:19:48] <jkridner> Ayman_: production runs are only done every few months now, but they are still happening.
  • [18:20:05] <jkridner> Ayman_: Digi-Key is likely the best place to make an xM order now.
  • [18:20:17] <_av500_> Ayman_: it was always out of stock
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  • [18:20:44] <_av500_> so just order and wait
  • [18:20:55] <Ayman_> I called them up this morning and they said they have nothing in stock and no delivery date
  • [18:21:21] <hitman_> nerdboy: yes, i did the "su - debian" nothing was prompted.
  • [18:21:52] * Ferris (~Ferris@c-71-234-4-122.hsd1.ct.comcast.net) Quit (Ping timeout: 240 seconds)
  • [18:21:53] <nerdboy> but your shell prompt should change
  • [18:22:03] <rcn-ee> Ayman_, the people on the phone don't know about the pcb shortage for the xm... Right now they cant' be built peroid. ;)
  • [18:22:24] <hitman_> nerdboy: yes, its now "debian@beaglebone:~$"
  • [18:22:32] <nerdboy> just run the full imort command from before as debian user
  • [18:22:42] <nerdboy> *import even
  • [18:23:16] <nerdboy> rcn-ee: as usual, you were right...
  • [18:23:22] <Ayman_> pcb shortage? wow
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  • [18:23:45] <nerdboy> installing imagemagick hit the end of my 2GB of space...
  • [18:23:48] <rcn-ee> Ayman_, the company that built them, when belly up... it takes awhile to recertify a new pcb supplier..
  • [18:24:04] <Ayman_> oh I see
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  • [18:24:17] <Ayman_> thanks for clarification
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  • [18:24:38] <nerdboy> hitman_: hopefully you have an 4GB emmc?
  • [18:24:38] <rcn-ee> wish i knew when that was done.. sorry i couldn't tell you more then that. .;)
  • [18:25:06] <hitman_> nerdboy: yes i do !
  • [18:25:12] <hitman_> and it worked !
  • [18:25:14] <nerdboy> rcn-ee: going to elc again?
  • [18:25:29] <Ayman_> I appreciate your help rcn-ee
  • [18:25:42] <hitman_> how do you guys can just solve any problem !!!
  • [18:26:03] <Ayman_> you guys have a good day
  • [18:26:15] <hitman_> thank you !!! nerdboy : i owe you one !
  • [18:26:44] <rcn-ee> nerdboy, yeap that's the plan.. we need to find a conference room and do a mini-beagle conference ;)
  • [18:27:00] * titan83 (57e0bc23@gateway/web/freenode/ip.87.224.188.35) has joined #beagle
  • [18:27:09] * nerdboy wants another philly
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  • [18:27:33] <rcn-ee> i tried making one last week.. wasn't the same.. i'll be heading to that joint again..
  • [18:27:58] <nerdboy> hopefully x-apple english dude around the corner still has some old speckled hen
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  • [18:29:31] <nerdboy> rcn-ee: i get to stay for oedam, boss leaves early
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  • [18:29:45] <nerdboy> we have talks on mon/tue
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  • [18:30:33] <hitman_> so to be again a root user , i'l; have to do "su - root", right ?
  • [18:30:41] <nerdboy> philly lunch on any of those days would work
  • [18:30:53] <nerdboy> just "exit"
  • [18:31:09] <nerdboy> ^ hitman_
  • [18:31:24] <hitman_> oh ! thank you ! again !
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  • [18:44:39] <hitman_> how to know the amount of space left free in the emmc ?
  • [18:47:03] <pehjota> hitman_: df -h /
  • [18:57:16] <nerdboy> rcn-ee: you were also mentioned in scale embedded talk
  • [18:57:36] <nerdboy> hopefully you didn't get a headache or anything...
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  • [18:57:49] <rcn-ee> really? i beter go to that one. ;)
  • [18:58:05] <nerdboy> last week
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  • [18:58:28] <nerdboy> slides on github, videos on yootube
  • [18:58:44] <rcn-ee> sweet, i'll be checking that out!
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  • [19:02:50] <nerdboy> https://www.youtube.com/channel/UCII2Shsii1TFI_UrIvUwu1Q <= you should like stephanie's talks...
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  • [19:03:53] <rcn-ee> oh! she was having fun with usb! ;)
  • [19:04:15] <nerdboy> that's kind of a long-term love/hate thing...
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  • [19:06:32] <nerdboy> she decided to eschew my libreoffice template and make her slides with inkscape
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  • [19:13:20] <ryan-c> anyone know if using the gcc from debian can be used to compile modules for the kernels here: https://github.com/RobertCNelson/linux-stable-rcn-ee?
  • [19:13:55] * CareBear\ (foo@stuge.se) Quit (Ping timeout: 255 seconds)
  • [19:14:06] <ryan-c> i see the same gcc version in /proc/version...
  • [19:17:18] <ds2> wonder how well would 0.4mm and POP work with a toaster oven reflow...
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  • [19:18:15] <nerdboy> ryan-c: should be safe
  • [19:18:32] <Catslab> I'm having hardtime trying to bring up pruss on ti 3.14
  • [19:18:37] <ryan-c> Cool, well, let's see if I can get stuff to compile.
  • [19:18:39] * florian (~fuchs@Maemo/community/contributor/florian) has joined #beagle
  • [19:18:46] <Catslab> did anyone succeded without remoteproc ?
  • [19:18:47] <ryan-c> I've ended up needing 3.19
  • [19:18:57] <nerdboy> ryan-c: meaning native debian arm, right?
  • [19:19:03] <ryan-c> nerdboy: yes
  • [19:19:23] <nerdboy> yeah, just leave off the CC/ARCH stuff
  • [19:19:37] <nerdboy> (where he really means CROSS_COMPILE)
  • [19:19:41] <ryan-c> I seem to need the `raw` module, which isn't included.
  • [19:19:52] <ryan-c> (i am doing weird things)
  • [19:20:09] <nerdboy> for native, just do it like you would on x86
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  • [19:20:57] <nerdboy> zcat /proc/config.gz > .config && make menuconfig
  • [19:20:58] <ryan-c> as a side note, his instructions in /etc/apt/sources.list say to use `uname -r` as the tag which doesn't work for 3.19 - uname -r says 3.19.0-bone3 but the tag is 3.19-bone3
  • [19:21:25] <nerdboy> that is for following all the deploy steps etc
  • [19:21:34] * lyakh (~lyakh@xdsl-195-14-251-139.netcologne.de) Quit (Ping timeout: 255 seconds)
  • [19:21:46] <nerdboy> just substitute
  • [19:21:58] <ryan-c> nerdboy: Thanks, I'm pretty familiar with building kernels. The trick here is I just want to build the one module.
  • [19:22:02] <nerdboy> well, your version is your version
  • [19:22:20] <ryan-c> (which I've been able to do on RPi before)
  • [19:22:27] <ryan-c> wtf?
  • [19:23:06] <ryan-c> apparently github is producing corrupt zip files
  • [19:23:39] <nerdboy> don't use that "feature"
  • [19:24:10] <ryan-c> is it known to be broken?
  • [19:25:25] <nerdboy> <shrug>
  • [19:25:33] <nerdboy> i usually just clone from there...
  • [19:25:44] <ryan-c> my internet connection is kinda slow
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  • [19:29:08] <nerdboy> ryan-c: would be faster as cross-compile...
  • [19:29:26] <ryan-c> nerdboy: don't the gcc versions need to match?
  • [19:29:57] <nerdboy> you would install a new kernel image/modules anyway, no?
  • [19:30:08] <ryan-c> nerdboy: no
  • [19:30:29] <ryan-c> nerdboy: I am only compiling one module.
  • [19:30:41] <nerdboy> if it's truly an out-of-tree build then you might be able to get away with modules_prep in the kernel source
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  • [19:31:22] <nerdboy> no guarantees how much the kernel will want to rebuild...
  • [19:31:34] <ryan-c> true
  • [19:31:54] <nerdboy> gcc version shouldn't matter much
  • [19:32:05] <ryan-c> I did this on an RPi to patch some wifi drivers to allow the regdomain to be bypassed, seemed to work fine.
  • [19:32:17] <nerdboy> module version yes, depending on kernel config
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  • [19:32:39] <nerdboy> well, do that again...
  • [19:34:11] <ds2> rebuild the entire kernel
  • [19:34:24] <ds2> forget this death by a bazillion modules
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  • [19:40:23] <ryan-c> ds2: worked fine, only had to compile the one module....
  • [19:41:41] <nerdboy> but you could turn your bbb into a tiny heater for a day or so...
  • [19:41:54] <ryan-c> i already have the module loaded
  • [19:41:56] <ryan-c> :p
  • [19:44:13] * mythos (~mythos@unaffiliated/mythos) Quit (Ping timeout: 264 seconds)
  • [19:56:32] <keyvan> hey guys i have created a python daemon that i want to autoinstall on the debian image... is there a documented workflow for modifying the emmc flasher image? or is more advisable to just have an install script that i execute after the flash via ssh?
  • [19:56:33] <woglinde> with musb all is lost anyway
  • [19:56:52] <woglinde> keyvan depends on your usecase
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  • [19:58:52] <keyvan> woglinde: basically the use case is for mass distribution of this beaglebone-based product. but we're just 2 guys so we need to figure out the best workflow.
  • [19:59:25] <keyvan> by modifying the flasher, in theory the bootstrap process would take much less time
  • [19:59:26] <nerdboy> keyvan: do have a hard requirement for debian?
  • [19:59:35] <keyvan> nerdboy: nope, just need python
  • [20:01:04] <nerdboy> oe builds much smaller images, easy to integrate/build/deploy custom stuff
  • [20:01:05] <ryan-c> keyvan: easy solution is just to have something that auto-logs in via ssh and runs an install script
  • [20:01:20] <nerdboy> lots of documentation...
  • [20:01:35] * vtrbender (~vtrbender@90-227-35-161-no42.tbcn.telia.com) has joined #beagle
  • [20:01:48] <keyvan> ryan-c: yup thats the obvious approach im thinking of currently, interesting in nerdboy's idea though as it could be the proper way to go about this
  • [20:02:04] <keyvan> nerdboy: i think the start of your message got cut? oe builds ? any links to docs would be appreciated
  • [20:02:09] * nerdboy just hit 100% in 2GB debian image after one "apt-get install"
  • [20:02:13] <keyvan> s/interesting/interested/
  • [20:02:49] <keyvan> you using irc from your beagle too ?
  • [20:02:59] <nerdboy> yoctoproject.org
  • [20:03:13] <nerdboy> no, normal desktop
  • [20:03:38] <nerdboy> bbb needs bonescript/cloud9 image back again apparently
  • [20:04:06] * SoFLy (~SoFLy@ur-mom.bc.edu) Quit (Read error: Connection reset by peer)
  • [20:04:06] <keyvan> ah ok sick, this yocto thing looks like the discussion i'm searching for
  • [20:04:10] <nerdboy> keyvan: we made a yocto crash course thing for SCaLE
  • [20:04:11] <keyvan> thanks nerdboy
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  • [20:04:35] <keyvan> yeah ? any links to that ? i havent clicked around yet but definitely something direct to the meat would be nice ;)
  • [20:04:38] <nerdboy> https://github.com/VCTLabs/scale13x-presentations
  • [20:04:45] <keyvan> thanks dude
  • [20:04:46] <nerdboy> bin dir has pdfs
  • [20:05:01] <nerdboy> look at the "notes" for details
  • [20:05:29] <woglinde> keyvan for help with oe you can join #oe of course
  • [20:05:38] <nerdboy> yocto docs are release-specific or "latest"
  • [20:05:50] <keyvan> thanks woglinde i didnt realize that oe was not a typo
  • [20:05:50] <nerdboy> very extensive
  • [20:06:03] <woglinde> keyvan no it wasnt ;)
  • [20:06:18] <nerdboy> crash course thing has lots of reference links
  • [20:06:33] <woglinde> yocto is using openembedded
  • [20:07:07] * jamesaxl (~jamesaxl@41.248.109.14) has joined #beagle
  • [20:07:38] <keyvan> any suggestions regarding virtualization, say for developing this whole thing end to end from mac os x? i've found that i'm way faster when developing via ssh & tmux over the usb network conn to a real beagle
  • [20:07:49] <woglinde> keyvan basicly all you have to do is to write an bb-file with your pyhton app and than create your own image, which can be based on the one available
  • [20:07:58] <keyvan> im looking at using qemu to virtualize (as now im about to add a touchscreen component too...s so i gotta mess with x11)
  • [20:08:23] <nerdboy> keyvan: "yocto project" is top-level over yocto reference bsp/core stuff and openembedded
  • [20:08:24] * djlewis (~bubba@adsl-65-64-30-13.dsl.ltrkar.swbell.net) has joined #beagle
  • [20:08:28] <woglinde> keyvan but the setup can be a bit hard for someone new
  • [20:08:31] <keyvan> woglinde: ok awesome, looks like i got a lot to learn still
  • [20:08:40] <nerdboy> explained in slides and upstream docs
  • [20:09:07] <woglinde> keyvan yes but you can run very minimal images
  • [20:09:12] <woglinde> in the end
  • [20:09:26] <keyvan> gotcha, yeah for instance i dont want that cloud9 stuff, i dont need ruby, things like that
  • [20:09:36] <nerdboy> yocto/poky has helpful qemu scripts, etc
  • [20:09:42] <keyvan> awesome
  • [20:09:57] <woglinde> ah right yes
  • [20:09:57] * muka (~muka@174-17-218-219.phnx.qwest.net) has joined #beagle
  • [20:10:01] <nerdboy> "tyr it and see"
  • [20:10:02] * rmanish (~techno@117.250.177.118) Quit (Read error: Connection reset by peer)
  • [20:10:04] <keyvan> hehe i love the beaglebone community
  • [20:10:06] <woglinde> you can test the image via qemu
  • [20:10:17] <nerdboy> *try it even...
  • [20:10:19] <woglinde> hm someone hate us
  • [20:10:27] <woglinde> for beeing harsh
  • [20:10:44] <nerdboy> maybe a teensy bit
  • [20:10:45] * libregeekingkid (~quassel@116.75.34.25) Quit (Read error: Connection reset by peer)
  • [20:11:10] <Catslab> I like that: unhandled fault ;)
  • [20:11:24] <nerdboy> woglinde: hand more chill pills maybe?
  • [20:11:28] <keyvan> pfff. it's been a great experience. my partner on this project is in charge of doing the case... we found a beautiful one from logic supply but it didnt have the 2d files in it. he opened an issue asking for it and a day layer, dxf files with 2d designs. just brilliant
  • [20:11:58] <nerdboy> check thingiverse yet?
  • [20:12:01] <keyvan> and took me what? 1 minute to get detailed responses on how to create my custom distro? just brilliant
  • [20:12:03] <woglinde> keyvan how many unit you want to sell
  • [20:12:04] <keyvan> no not yet!
  • [20:12:05] <woglinde> ?
  • [20:12:31] <Catslab> nobody tried the pruss in ti 3.14 kernel ?
  • [20:12:36] * uv (~uv@84-236-107-61.pool.digikabel.hu) has joined #beagle
  • [20:12:38] <keyvan> woglinde: we want to start with 10 (We've got 10 PCB's fabbed and in hand), but if we sell all 10 we'll go 100 or something ?
  • [20:12:46] <keyvan> (For the cape)
  • [20:12:49] <nerdboy> crash course is quicky bootstrap, then mailind lists and irc
  • [20:13:12] <ryan-c> yay, i made a kernel opps
  • [20:13:44] * alexanderhiam (~alexander@c-24-147-39-41.hsd1.nh.comcast.net) Quit (Quit: Leaving)
  • [20:13:56] <woglinde> ryan-c musb?
  • [20:14:03] <ryan-c> musb?
  • [20:14:16] <nerdboy> keyvan: real engineering support/training also available at reasonable rates
  • [20:14:47] * nerdboy had bad experience with musb and old kernel fork
  • [20:15:03] <ryan-c> woglinde: I was modifying a kernel module
  • [20:15:42] <ryan-c> and my beaglebone black isn't coming back from a reboot
  • [20:15:55] <ryan-c> I guess that's enough screwing with it for now.
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  • [20:16:30] <keyvan> nerdboy: cool i'd probably be interested in it... i'm in a hurry to finish this stuff up before i go overseas this month, so i know i wont be able to go deep on oe/yocto for this run. i will have to resort to having a fat debian image and running a script over it
  • [20:16:40] <ryan-c> I'm trying to come up with some way to prevent the mass storage gadget from caching reads of the device it's exporting.
  • [20:17:15] <ryan-c> I tried adding the O_DIRECT flag to the filp_open call, which seemed to have no effect.
  • [20:17:42] <nerdboy> try just mount options first?
  • [20:18:00] <ryan-c> Then I tried commenting out the code that prevents you from using a char device so I could use /dev/raw/rawX, and that caused an oops.
  • [20:18:11] * nerdboy plays not much with gadgetfs
  • [20:18:39] <nerdboy> ryan-c: heh, you're hitting stuff in stephanie's usb talk...
  • [20:18:59] <nerdboy> "embedded usb, quirky but useful..."
  • [20:19:03] <ryan-c> nerdboy: I need to export an nbd device as usb mass storage.
  • [20:19:34] <ryan-c> ...and I need it not to cache reads for highly esoteric reasons.
  • [20:19:44] <nerdboy> look at the svg slides above
  • [20:20:00] <ryan-c> which slides?
  • [20:20:16] <nerdboy> well, that specifically is not mentiined iirc
  • [20:20:31] <nerdboy> but might be informative anyway...
  • [20:20:45] <ryan-c> nerdboy: the boot slides?
  • [20:21:06] <nerdboy> https://github.com/VCTLabs/scale13x-presentations/blob/master/bin/usb_quirky_versatile_paths.svg
  • [20:21:24] <nerdboy> stupid github links...
  • [20:21:35] <nerdboy> the usb slides
  • [20:21:44] <ryan-c> I might just need to hack up a custom mass_storage driver that uses nbd directly
  • [20:22:45] <ryan-c> nerdboy: I can't seem to see anything there
  • [20:23:16] <nerdboy> https://github.com/VCTLabs/scale13x-presentations <= bin dir
  • [20:23:49] <nerdboy> so how does a network block device replace gadgetfs again?
  • [20:24:07] <ryan-c> nerdboy: it doesn't, that's what i'm using as a backing file
  • [20:24:22] <nerdboy> i thought you wanted your (bbb) device to present itself as mass storage?
  • [20:24:29] <ryan-c> yes
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  • [20:24:48] <ryan-c> present a mass storage device that is backed by an nbd somewhere
  • [20:25:14] <nerdboy> and it's caching?
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  • [20:25:32] <ryan-c> yeah, the bbb caches the nbd device
  • [20:25:36] <ryan-c> (on read)
  • [20:26:20] <nerdboy> you have a nose for the "odd couple" use case, don't you...
  • [20:26:48] <nerdboy> maybe rethink it and just use iscsi or something
  • [20:27:26] <nerdboy> afaik gadget was seignd to present local card/flash as storage
  • [20:27:36] <nerdboy> *designed even
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  • [20:28:26] <ryan-c> nerdboy: NBD is attractive because the server is trivial to implement and I need custom behavior based on read patterns (don't ask why).
  • [20:28:27] <nerdboy> without disabling cache that sounds like "normal" behavior
  • [20:28:58] <nerdboy> should be a straightforward way to turn that off
  • [20:29:03] <ryan-c> the caching?
  • [20:29:07] <nerdboy> yup
  • [20:29:10] <ryan-c> you would think so, but I can't find it.
  • [20:29:56] <ryan-c> the /dev/raw/rawX thing seemed to be sort of for this, but it doesn't seem to play nice.
  • [20:30:06] <nerdboy> so either we're missing something obvious or upstream blanked out there
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  • [20:31:14] <mdp> nerdboy: what do you mean by "gadget was designed to present local card/flash as storage"? the mass storage gadget is designed to present a file or block device as storage...it doesn't care what's backing those entities.
  • [20:31:52] <nerdboy> sure iscsi won't meet your (weird and unspecified) requirements?
  • [20:32:18] <nerdboy> not saying it cares per se, but may expect a bit less latency...
  • [20:32:51] <ryan-c> nerdboy: I'd have to write an iscsi server then
  • [20:33:08] * hitman_ (~hitman@115.240.181.250) Quit (Ping timeout: 252 seconds)
  • [20:33:25] <ryan-c> performance doesn't matter a whole lot
  • [20:33:28] * nerdboy just guessing the gadget devs didn;t test against nbd backend
  • [20:33:45] <ryan-c> nerdboy: nbd backend works totally fine - it's just a block device.
  • [20:34:01] <ryan-c> I just have the bizarre requirement of no read caching.
  • [20:34:24] * roric (~roric@c-107ae455.213-3-64736c14.cust.bredbandsbolaget.se) Quit (Ping timeout: 245 seconds)
  • [20:34:32] <mdp> ryan-c: are you planning to present the modified gadget driver as a USB mass storage class device though?
  • [20:34:42] <ryan-c> mdp: yes
  • [20:34:45] <mdp> ryan-c: or are you building a customer host protocol?
  • [20:34:47] <mdp> ok
  • [20:34:58] <ryan-c> need to have it bee mass storage
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  • [20:35:47] <mdp> s/customer/custom ;)
  • [20:36:15] <mdp> ryan-c: makes sense, it would be a shame to throw away the class driver on the host
  • [20:37:02] <ryan-c> I wonder if I can stick some fuse-based madness in the middle of this to prevent caching.
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  • [20:39:05] <nerdboy> "fuse-based madness" might actually help...
  • [20:39:09] <ryan-c> yeah
  • [20:39:23] <ryan-c> the vfs cache doesn't work on fuse by default
  • [20:39:30] <nerdboy> just sounds funny...
  • [20:40:10] <ryan-c> nerdboy: "Rube Goldberg-esque"
  • [20:40:59] <nerdboy> "then we can add a dbus layer over here..."
  • [20:41:38] <ryan-c> this doesn't have to be good, or fast, or maintainable, it just has to work :p
  • [20:41:56] * mag__ (~mgreer@ip68-3-153-79.ph.ph.cox.net) Quit (Ping timeout: 265 seconds)
  • [20:42:15] <nerdboy> good, set the bar nice and high
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  • [20:44:38] <nerdboy> ryan-c: maybe think a few more times on how this could back to bite your ass
  • [20:44:46] <nerdboy> just sayin'
  • [20:44:49] <ryan-c> nerdboy: what, the fuse thing?
  • [20:45:19] <nerdboy> no, the "just has to work" part
  • [20:45:46] <nerdboy> once your rube-goldberg device is complete
  • [20:46:33] * nerdboy has no problem with deploying fuse-based solution
  • [20:46:36] <ryan-c> it may not seem like it, but I know what I'm doing.
  • [20:46:56] <ryan-c> (famous last words)
  • [20:47:11] <nerdboy> never did i say you didn't...
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  • [20:47:45] * nerdboy has a couple of ass-scars from previous
  • [20:47:48] <ryan-c> lol
  • [20:48:40] <nerdboy> if it lives more than a week...
  • [20:48:51] <ryan-c> it doesn't need to
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  • [21:45:49] <[1]hitman> i wish to play some audio on the bbb.
  • [21:45:56] * [1]hitman is now known as hitman_
  • [21:46:16] <hitman_> and its a project so cant use cape.
  • [21:46:42] <hitman_> i have DACs, amlifiers and pre amplifiers.
  • [21:47:28] <hitman_> is there a way i can get the output for the circuit comprising of these ?
  • [21:47:33] <ds2> no need for a DAC
  • [21:47:49] <ds2> a transistor a few passives is all you need
  • [21:48:02] <nerdboy> already has DAC output pins, no?
  • [21:48:24] <ds2> why use a DAC if you don't have to?
  • [21:49:05] <hitman_> ok . whta GPIOs do i use for that ? where will i get the output ?
  • [21:49:22] <hitman_> and this will all be on that linux right ?
  • [21:49:33] <hitman_> or i'l have to right some code for that ?
  • [21:50:18] * nerdboy prefers wronging code...
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  • [21:51:31] <ds2> hmmm?
  • [21:51:33] <ds2> sure
  • [21:52:00] <hitman_> so at what GPIOs will i get the output ?
  • [21:52:11] <hitman_> of that audio .
  • [21:52:11] <hitman_> ?
  • [21:52:31] <ds2> there are several ways of doing it
  • [21:52:40] <ds2> so the pin you use depends on which way
  • [21:52:48] <ds2> if you insist on using GPIOs, any free one will do
  • [21:53:33] * c10ud (~c10ud@emesene/dictator/c10ud) Quit (Quit: cya)
  • [21:53:53] <hitman_> can you please direct me, where can i find some document on that ? or related ?
  • [21:54:27] <hitman_> what to google for ? its just replying with the capes.
  • [21:56:03] <ds2> look at the basic theories first
  • [21:56:09] <ds2> then reduce it down to an implementation
  • [21:56:25] <ds2> keywords to use on a search engine - "1 bit DAC", "PWM audio"
  • [21:57:32] <hitman_> ok, will "volumio" be usefull for such a thing ?
  • [21:58:10] <nerdboy> hmm, adc pins but i guess you do get to build your own dac
  • [21:58:16] <adj> http://www.dx.com/p/5-1-channel-usb-sound-card-adapter-black-59039
  • [21:58:26] <ds2> no idea what that is
  • [21:58:28] <adj> problem solved for under 3 dollars
  • [21:58:35] <ds2> there is no DAC
  • [21:58:39] <ds2> not in the conventional sense
  • [21:58:53] <ds2> ADCs are needed only if you need audio in
  • [21:58:56] <nerdboy> http://www.element14.com/community/community/designcenter/single-board-computers/next-gen_beaglebone/blog/2013/07/06/bbb--building-a-dac
  • [21:59:35] <hitman_> volumio is there on beaglebone.org
  • [21:59:36] <hitman_> http://beagleboard.org/project/Volumio/
  • [22:00:21] <ds2> no idea how that is related to anything you are asking
  • [22:01:02] <hitman_> thats what i was aksing. ok . thank you :)
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  • [22:04:47] <hitman_> actually, i have to use these DACs and all, its like, i need to show an application of all of them, together, and since i wish to learn about bbb, i just thought to make this kind of audio output device .
  • [22:04:57] * nighty^ (~nighty@static-68-179-124-161.ptr.terago.net) Quit (Quit: leaving)
  • [22:05:19] <hitman_> and i really need to use the DACs + pre-Amp + Amp .
  • [22:05:24] <hitman_> so.....
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  • [22:07:06] <hitman_> what i actually need is, to output the 8 bit data, at a given sample, through 8 GPIOs.
  • [22:07:28] * PhoenixDraco (~DrPhoenix@96.89.132.253) has joined #beaglebone
  • [22:07:41] <hitman_> and i have no idea how i'll make bbb do that.
  • [22:08:04] <hitman_> *at agiven sample rate
  • [22:08:08] <hitman_> *a given
  • [22:08:55] <ds2> short answer is you don't
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  • [22:09:13] <Catslab> gpio is too slow
  • [22:10:16] <hitman_> not even at sample rate 22.05 khz ?
  • [22:10:32] <Catslab> gpio access from userspace is lagging
  • [22:10:45] <Catslab> you can use I/O pins from pru that said
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  • [22:11:37] <Catslab> I'm off snow strom :(
  • [22:11:50] <hitman_> so PWM audio is the only way ??
  • [22:12:12] <veremit> isn't there an I2S on the beagle?
  • [22:12:13] <Catslab> you can go with 8 bit audio on pru
  • [22:12:19] <Catslab> DAC on spi
  • [22:12:22] * LordDVG (~LordDVG@unaffiliated/lorddvg) Quit (Remote host closed the connection)
  • [22:12:29] <Catslab> or even in i2c
  • [22:12:35] <jkridner> veremit: yes. the mcasp can do I2S
  • [22:12:49] <jkridner> the audio cape uses I2S.
  • [22:12:54] <veremit> thought so
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  • [22:13:57] <veremit> hitman_ .. basically you'd have to write a PRU program to output your samples, read from a memory buffer or similar which you populate in userspace
  • [22:14:11] <ds2> I2S != gpio
  • [22:14:12] <veremit> or use a serial DAC
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  • [22:14:31] <ds2> PRU pins are not GPIO, they are PRU pins
  • [22:14:37] <veremit> or dedicated sound chip via I2S
  • [22:14:43] <veremit> aka codec
  • [22:14:50] <ds2> MCASP burns too many pins
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  • [22:15:33] <ryan-c> nerdboy: okay, well the fuse thing seems to work, maybe.
  • [22:15:41] <veremit> ds2 .. depends what else you're using your pins for :p
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  • [22:15:54] <ds2> veremit: fair response
  • [22:16:09] <veremit> or Not using your pins :)
  • [22:17:09] <veremit> mcasp/i2s or external usb codec are probably the preferred methods .. but if you're doing it Old Skool .. then you're outputting your 8-bit data as described ..
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  • [22:17:53] <ds2> there are other more interesting functions on the mcasp pins, IIRC
  • [22:18:11] <veremit> ds2: that may be true, but thats not what's being asked ..
  • [22:18:45] <ds2> but what is being asked doesn't work well.
  • [22:18:54] <veremit> ds2: irrelevant :)
  • [22:18:56] <ds2> GPIO + parallel dac == audio disaster
  • [22:19:12] <veremit> nobody said it had to be HI-Fi :p
  • [22:20:31] <veremit> ds2: it may be undesireable .. but its quite an interesting academic experiment
  • [22:21:14] <ds2> I question the interesting part
  • [22:21:34] <ds2> a better exercise is to revise it to use the GPMC and build a proper latch/clock setup
  • [22:22:32] <veremit> yea I could see a latch being useful
  • [22:23:02] <veremit> it should be possible to set up a timer for ~22khz though
  • [22:23:24] <ds2> for "audio", start with 8KHz
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  • [22:35:23] <hitman_> ok so, i can use one of the SPI ==> serial to perallel (may be 74hc595d) ==> DAC ==> pre-amp ==> amp. (right ? )
  • [22:35:51] <hitman_> and how to direct all the audio data to the spi port ?
  • [22:36:20] <hitman_> *parallel
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  • [22:48:55] <hitman_> u guys there ?
  • [22:49:04] <hitman_> i really need to use them.
  • [22:49:28] <tholm> I don't understand what is the point of run linux on digital signal processors? IMHO, prefer to make a load balancing for distributing tasks onto heterogeneous cores(ARM+DSP). http://elinux.org/BeagleBoard/GSoC/Ideas#Linux_on_C6x
  • [22:49:37] * gusnan (~gusnan@s213-100-228-162.cust.tele2.se) Quit (Ping timeout: 264 seconds)
  • [22:50:39] <tholm> running*
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  • [22:50:50] <rcn-ee> tholm, why not? ;) http://linux-c6x.org/wiki/index.php/Main_Page
  • [22:51:13] <tholm> yep I read that
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  • [22:52:39] <rcn-ee> if you consider the os on the original beagle/xm dsp cant be ported as is to remoteproc.. running linux is atleast an option..
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  • [22:55:05] <tholm> DSP is not the best choice to run linux kernel
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  • [23:01:11] <veremit> yuk no lol
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  • [23:03:33] <ds2> the blackfins guys done it
  • [23:05:08] <tholm> ds2: blackfin isn't a heterogeneous core(ARM+DSP)
  • [23:05:28] <ds2> details
  • [23:05:32] <ds2> nor is it an ARM w/MMU
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  • [23:07:35] <tholm> TI combines ARM cores with DSP to accelerate applications
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  • [23:08:49] <tholm> blackfin is just a dsp core
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  • [23:20:50] <ds2> and the 6K project is about running Linux on the DSP core
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  • [23:21:48] <tholm> yes
  • [23:22:17] <tholm> The ARM processor can be used for other general processing tasks(one of them to run Linux) and DSP core can be used for various purposes, i.e multimedia decoding/encoding. This offloads the host ARM processor.
  • [23:22:20] * rcn-ee (~voodoo@64.77.213.245) Quit (Remote host closed the connection)
  • [23:23:32] <tholm> IMHO is the best scenario for the Xm and X15 boards
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  • [23:25:50] <GenTooMan> DSP's are best used for simple highly repetitious jobs. For example encryption MD5 check sum calculation CRC128 DCT deblocking etc. data smoothing etc.
  • [23:26:07] <tholm> For that reason idk if it's a good idea working on C6x project( Linux on C6x)
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  • [23:26:32] <GenTooMan> C6K? Well I guess it's challenge? Only reason I can think of.
  • [23:27:57] <GenTooMan> Running linux on a 68K was possible too. Did want an MMU for that but I digress. DSP's are generally harvard archetecture so memory is disperate at best.
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  • [23:28:19] <tholm> what is the purpose to run linux on dsp core when you have a ARM processor?
  • [23:29:10] <GenTooMan> Nothing wrong with fiddling with it I guess. Maybe they want to run a mini server in the DSP area? Or make an X client for the main processor?
  • [23:29:41] * muka (~muka@174-17-218-219.phnx.qwest.net) Quit (Ping timeout: 256 seconds)
  • [23:30:17] <GenTooMan> I can't say I know why either. :D
  • [23:30:23] <tholm> lol
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  • [23:31:11] <GenTooMan> Just saying "it might be the challenge" sort of like the guy who built his house out of beer cans type of thing.
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  • [23:32:25] <GenTooMan> It would be nice to have some sort of high speed bus access on the expansion bus.
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  • [23:35:14] <tholm> X15 adds SuperSpeed USB 3.0 support
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  • [23:38:07] <GenTooMan> That's Not particularly simple. PCIe would be simpler than USB supersport err superspeed.
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  • [23:38:32] <tholm> I will use X15 with one of this http://www.cypress.com/fx3/
  • [23:39:42] <agmlego> i am confused how pcie is simpler than usb 3.0...
  • [23:41:13] <GenTooMan> You can get OpenCore for it and a lot of cheap FPGA's support it directly you can use Icharus to do all your simtesting and in a day or too you have a nice memory mapable device interface.
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  • [23:41:40] <GenTooMan> Of course if you don't know verilog that would be a minus :D
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  • [23:42:38] <tholm1> haha
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  • [23:43:26] <tholm1> Verilog is good at hardware modeling but lacks higher level
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  • [23:44:19] <GenTooMan> USB adds a lot of complexity granted their is a lot of "Software" that makes it happen, that however is the issue. USB == pile of software thus I am no USB fan. It's a software approach to IO programing if you didn't have all those suites of software to make it work. It would be a bitch to work with.
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  • [23:46:12] <tholm1> I agreed :-D
  • [23:47:39] <GenTooMan> Also USB is a favored attack vector on all computers. All windows machines andriod linux OSX systems are volunerable too the "keyboard HID attack". It simply acts like a flash drive and a keyboard (USB composite) and poof they can screw with you big time.
  • [23:48:16] <GenTooMan> Watch out for "charging stations" let me put it this way.
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  • [23:50:55] <ryan-c> USB condoms are a thing.
  • [23:50:58] <GenTooMan> You now need a USB condom for charging via USB (the irony of that).
  • [23:51:24] <GenTooMan> It's ironic about 20 years ago they were talking computer condems.. with USB guess what? :D
  • [23:51:50] <ryan-c> somewhat more of a problem for phones, really.
  • [23:52:16] <GenTooMan> It affects all sorts of devices but yes mostly phones (mostly).
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  • [23:52:51] <ryan-c> I'm sure there's plenty of exploitable drivers for USB devices that will auto load/install
  • [23:53:37] <GenTooMan> Anyhow I digress I want a simple fast bus that I can stream data in and out of the computer without burden the kernel like USB does.
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  • [23:54:20] <ryan-c> GenTooMan: That sounds like DMA. Do you want DMA attacks? Because that's how you get DMA attacks.
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  • [23:55:27] <GenTooMan> <ryan-c> DMA works for me but the kernel handles the IO via DMA much like a sound device streams audio data from buffers in and out of the computer.
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