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  • [02:19:07] <frenchface> Hey everyone, I am just starting looking that the BBB, can I use the gpio to add aditional usb interfaces, over just using a usb hub?
  • [02:20:13] * boris_G (~boris@58.165.161.10) Quit (Quit: This computer has gone to sleep)
  • [02:20:26] <veremit> frenchface .. you won't get enough speed over gpio to do usb
  • [02:20:50] <frenchface> thank you
  • [02:21:04] <veremit> not conventionally anyhow
  • [02:21:09] <veremit> what are you trying to do with it?
  • [02:22:08] <frenchface> instead of using a usb hub, I was wanting to hardwire in a few additional wifi adapters
  • [02:22:49] <rocky|arch> it might be possible to interface to the wifi chip, possibly with the PRU. It sounds like a massive headache though.
  • [02:22:51] <veremit> there are other interfaces on there .. eg. i2c, but you won't get high bandwidth like you would over usb
  • [02:24:05] <frenchface> ok
  • [02:25:37] <veremit> you can get spi network interfaces .. but you'll find its an expensive solution vs a usb wifi adapter :) and a hub [powered ofc!]
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  • [02:26:32] <frenchface> also to power the wifi adapters, i am needing to provide them external power, right?
  • [02:26:44] <veremit> yes - you're likely to see errors otherwise
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  • [02:50:05] <mdp> rocky|arch, ping
  • [02:51:16] <mdp> rocky|arch, the reason I asked the output question is that you've muxed P9_26 to act as pru1_r30...that is an output (as denoted by r30)
  • [02:52:05] <mdp> rocky|arch, looking at the parallel capture mode, it is designed to use pru0_r31_status[16]..that's an input as the capture mode clk edge
  • [02:52:09] <rocky|arch> pong
  • [02:52:13] <mdp> as documented in bit 2 of the GPCFG0
  • [02:52:39] <mdp> so you need to use P9_24 the pru0_r31[16] pin for the clk input
  • [02:52:49] <mdp> same mode6
  • [02:53:07] <rocky|arch> my brain just broke.
  • [02:53:18] <mdp> ok, let's go back
  • [02:53:24] <mdp> bit 2 of the GPCFG0
  • [02:53:26] <rocky|arch> no, let me explain
  • [02:53:55] <rocky|arch> the camera code uses that pin as a clock internally.
  • [02:54:19] <rocky|arch> ANd the code was running to completion, and only does when I start the clock. So apparently it is getting the signal.
  • [02:54:32] <mdp> well, then it doesn't match the trm
  • [02:55:07] <rocky|arch> I'll double check it
  • [02:55:08] <mdp> it clearly says pru0_r31[16]
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  • [02:55:22] <mdp> and that makes sense..anything muxed as r31 is an input
  • [02:55:28] <mdp> they aren't _GPIOs_
  • [02:55:35] <mdp> they are GPO and GPI
  • [02:56:03] <rocky|arch> I understand that you use two separate registers for reading and writing
  • [02:56:05] <mdp> that's a big distinction versus the OMAP GPIO IP out on the fabric
  • [02:56:27] <mdp> but they aren't bidirectional..understand that
  • [02:56:53] <rocky|arch> I need to pull up the reference
  • [02:56:54] <mdp> that's why there's a GPO and GPI mux mode on many of them
  • [02:57:16] <rocky|arch> they are bidirectional, you just have to change the mux mode.
  • [02:57:30] <mdp> lol
  • [02:57:41] * rocky|arch is going to pull up the aforementioned references before he says more false things
  • [02:57:44] <mdp> indeed, not like most people expect bidirectional to be ;)
  • [02:58:17] <mdp> you also need to be privileged to modify the control registers for muxing
  • [02:58:19] <rocky|arch> eh, I've worked on other embedded processors. You always have to toggle some bit somewhere to change the direction.
  • [02:58:33] <rocky|arch> in this case I have to do it through the device tree.
  • [02:58:43] <mdp> this has nothing to do with DT
  • [02:59:17] <mdp> lyren brown was trying to do this for his atari memory expansion module too
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  • [03:00:04] <mdp> change the pinmux...you would need to call to the pinctrl driver running on a8 to do it for you
  • [03:00:07] <mdp> due to privilege
  • [03:00:28] <mdp> and access from the PRU mastering on the fabric should fail
  • [03:00:33] <mdp> s/and/an
  • [03:00:44] <mdp> try it
  • [03:00:57] <rocky|arch> I don't have it in front of me unfortunately. It's back in the lab.
  • [03:02:31] <mdp> well, when you do..try chapter 9..
  • [03:02:58] <mdp> write to your control module register directly from the PRU and see if it takes
  • [03:03:11] <mdp> I think you'll find that it fails just like from userspace on linux
  • [03:03:20] <mdp> I gotta run..good luck
  • [03:03:32] <rocky|arch> This is why I keep mentioning device tree, because that is how I've been setting the pinmuxes.
  • [03:03:39] <rocky|arch> ok, ttyl
  • [03:04:18] <mdp> which in turn use the pinctrl driver to set the muxes in kernel space.
  • [03:04:53] <mdp> by userspace, I mean...go try writing to the register with devmem2
  • [03:05:09] <mdp> ok, really out
  • [03:05:15] <rocky|arch> ok
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  • [03:09:40] <rocky|arch> I don't see where you're getting P9_26 being pru1_r30. Is this reference sheet incorrect? https://docs.google.com/spreadsheet/ccc?key=0As0aJokrBccAdGkxeHkyYW1qRHNQdm5yZDhPQlRNR2c#gid=0
  • [03:10:06] <rocky|arch> or am I just reading it wrong....
  • [03:10:31] <Guest94003> hi every one this is sandy. i want to program GPIO,s of BBB using C language. suggest me some reference sites, blogs or any data links..
  • [03:10:43] <rocky|arch> sure, give me a moment
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  • [03:12:30] <rocky|arch> http://elinux.org/EBC_Exercise_11b_gpio_via_mmap
  • [03:12:37] <rocky|arch> Guest94003:
  • [03:13:01] <Guest94003> 1 min sir i am trying to see the site
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  • [03:13:53] <rocky|arch> Here's some code I wrote that abstracts the mmaping: https://github.com/rockybulwinkle/beaglebone/tree/master/homework05
  • [03:13:56] <rocky|arch> ymmv
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  • [03:17:06] <Guest94003> sir it is not looking similar to c language. sir let me tell u i am best in C language and ok with Python language. now suggest me better way to program Beagleboneblack GPIO's. my aim is to control Quadcopter with BBB so the code should be effective
  • [03:17:08] * prpplague will never understand this unreasonable expectations for gpio bitbanging performance
  • [03:17:33] <rocky|arch> prpplague: ;)
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  • [03:18:58] <Guest94003> what ???? rocky|arch
  • [03:19:39] <veremit> lol
  • [03:19:54] <veremit> sandy .. google beaglebone quadcopter .. sure I've seen something before
  • [03:20:38] <rocky|arch> Guest94003: The first link is a page my Professor authored. It will make more sense if you also look at his repository: https://github.com/MarkAYoder/BeagleBoard-exercises/tree/master/gpio
  • [03:20:53] <rocky|arch> veremit: I know I have. Being that it's my senior design project.
  • [03:21:42] <veremit> ;P
  • [03:22:47] <Guest94003> sir i am beginner. so suggest me the best way to program BBB. and suggest some links ... :-)
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  • [03:24:22] <Guest94003> ???
  • [03:26:00] <rocky|arch> ok, if you want to do some really beginner gpio, you might look at using the device tree.
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  • [03:26:52] <rocky|arch> take a look at this: http://elinux.org/EBC_Exercise_10_Flashing_an_LED
  • [03:27:46] <rocky|arch> I'm going to bed. Goodnight all.
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  • [03:35:37] <dfiller> I'm running x11vnc on my BBB but I have not been able to get it to run automatically on startup. My service is running and the script works fine by itself, any ideas?
  • [03:36:34] <veremit> create a shortcut to x11vnc .. set the password and config file up .. then add it to the appropriate X startup script
  • [03:36:49] <veremit> thats rather a quick overview :)
  • [03:38:47] <dfiller> I've already have a script that starts x11vnc which works from shell. I've got a service running that starts the script but it won't launch from that.
  • [03:39:23] * Akuma (~Akuma@137.175.233.59) Quit (Ping timeout: 272 seconds)
  • [03:39:35] <veremit> bear in mind that scripts don't always have an environment set.. ie what things are set/etc paths, etc
  • [03:39:50] <veremit> sorry .. that was a bit non-english too lol
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  • [03:39:59] <dfiller> maybe the shortcut would take care of permissions?
  • [03:40:06] <veremit> don't bank on it ;)
  • [03:40:35] * Guest94003 (31cd07b5@gateway/web/freenode/ip.49.205.7.181) Quit (Quit: Page closed)
  • [03:40:36] <veremit> who executes the script has an impact .. and where its executed
  • [03:40:55] <dfiller> it is currently in /home/root
  • [03:40:58] <veremit> bear in mind .. that if root exectues .. 99.99% its gonna run
  • [03:41:10] <veremit> if anything else runs it .. thats a whole differnt game
  • [03:41:19] <veremit> really .. we shouldn't be using a root account at all
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  • [03:55:38] <veremit> ok time for the pre-work nap :\ nite!
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  • [05:22:26] <noobiewantstokno> Hello everyone, I have a small question
  • [05:22:45] <noobiewantstokno> Does the BBB have a USB 2.0 port, or a 3.0
  • [05:23:07] <noobiewantstokno> and if 2.0, is it compatible with 3.0
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  • [05:54:14] <av500> 2.0
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  • [06:20:36] <tripzero> odd
  • [06:20:44] <tripzero> what would cause mmcblk1 to be missing?
  • [06:20:48] <tripzero> on the bbblack
  • [06:21:22] <tripzero> in ubuntu...
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  • [07:01:06] <aaaa> hi
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  • [07:28:24] <Rotti> hi
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  • [07:30:45] <CookieJar> ugh, so many channels on freenode, going through the list and joining ones I think I'm interested in
  • [07:31:26] <av500> join all the channels
  • [07:31:44] <CookieJar> how it feels like by now, heh
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  • [07:33:18] <CookieJar> wow, so many bitcoin channels
  • [07:34:04] <CookieJar> anyhow, been thinking of getting a beagleboard for a while, figured I'll idle here as I figure out which one
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  • [07:34:44] <johnwalkr> beaglebone black CookieJar
  • [07:34:56] <johnwalkr> is what 99% of people should get
  • [07:36:13] <CookieJar> interesting, seems about the size of a raspi and same price but much better
  • [07:36:46] <johnwalkr> yes, except for video performance
  • [07:36:47] <CookieJar> how long has the black been available? last I really looked at beaglebones, I don't think it was around
  • [07:37:01] <johnwalkr> about a year i think
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  • [07:37:14] <CookieJar> ah
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  • [07:54:53] <Artox> \o everyone
  • [07:55:08] <Artox> I was lookin for the pin assignment of the J1 header, but havent been able to find anything except gnd, rx,tx
  • [07:55:15] <Artox> I am specifically lookin for 3.3V power
  • [07:55:28] <av500> its all in the SRM
  • [07:55:32] <Artox> to hook up a rs232 power level converter
  • [07:55:34] <av500> and the schematics
  • [07:55:36] <Artox> oh
  • [07:56:49] <Artox> found it
  • [07:56:55] <Artox> I didnt found the SRM in the first place
  • [07:56:59] <Artox> that might have been my problem
  • [07:57:21] <Artox> oh wait
  • [07:57:41] <Artox> I am bak again with a table of 3
  • [07:57:44] <Artox> gnd, rx,tx
  • [07:58:16] <Artox> so have to check schematics
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  • [08:00:30] <Artox> so do I see this right? only the 3 pins of that header are connected?
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  • [08:01:12] <av500> might be yes
  • [08:01:41] * gusnan (~gusnan@unaffiliated/gusnan) Quit (Ping timeout: 248 seconds)
  • [08:02:03] <Artox> :/
  • [08:02:22] <Artox> now I need to get a blank copper to plug the power into the cape connector
  • [08:02:49] <av500> ?
  • [08:02:54] <av500> you have power on the cape pins
  • [08:03:22] <Artox> yeah
  • [08:03:30] <Artox> but I dont have sth tuo plug inm there
  • [08:03:39] <Artox> just connector cabels pin to pin right now
  • [08:03:48] <Artox> but I'll find sth
  • [08:06:45] <Artox> yay
  • [08:06:47] <Artox> it works :)
  • [08:07:20] <Artox> looks like I better had chosen a chip that doesn't need power supply
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  • [08:11:51] <Artox> or ofc one that powers from the other side
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  • [08:20:53] <johnwalkr> whew, lots of bumps but i think i2c bootloader for atmega8 and atmega328 is working reliably now
  • [08:21:04] <johnwalkr> proving very time saving
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  • [10:44:33] <sefat> i tried opkg upgrade and bbb took about 1 hour and when i reboot it windows cant recognize usb mass storage device
  • [10:44:44] <sefat> help me
  • [10:44:57] <sefat> i can debug and log in serially
  • [10:45:13] <sefat> how can i regain usb configuration
  • [10:45:36] <av500> dont do opkg upgrade
  • [10:45:41] <av500> q0: no
  • [10:46:03] <av500> why would you want to?
  • [10:46:29] <sefat> i just did it
  • [10:46:42] <sefat> to see the change
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  • [10:48:41] <sefat> i can access the media nad BEAGLEBONE folder bt serially
  • [10:49:27] <sefat> bt how can i make bbb to interact with windows through usb
  • [10:50:16] <av500> it does that by default
  • [10:50:27] <dys> sefat: maybe use one of these glass breaking sensors?
  • [10:50:30] <av500> just dont do opkg upgrade
  • [10:51:42] <sefat> now what i have to do to get usb to interact
  • [10:52:09] <sefat> when i plug usb pc doesnot recognize the usb and nothing happens
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  • [10:52:17] <vikky> hi
  • [10:52:45] <vikky> does the beagleboard black support 3g dongle
  • [10:54:26] <sefat> is there any way to reconfigure the bbb usign serial port
  • [10:54:52] <av500> vikky: if the dongle is supported by linux, most likely
  • [10:55:04] <av500> sefat: easiest is to reflash the stock image
  • [10:55:55] <sefat> i dont want to reflash . any possible way ?
  • [10:56:27] <sefat> cz i have some importent files on bbb.
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  • [10:57:07] <av500> connect it to ethernet
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  • [10:57:44] <linuxbot_> hi
  • [10:58:19] <linuxbot_> i had an issue with device tree while adding device info on beagle bone black
  • [10:58:48] <sefat> okay thank u
  • [11:00:12] <linuxbot_> while i am compiling "make dtbs" its showing syntax error
  • [11:02:32] <jackmitchell> maybe your devicetree changes introduced a syntax error then?
  • [11:04:28] <vikky> gfr
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  • [11:06:29] <linuxbot_> i have added this code http://pastebin.com/dwkaKqaB
  • [11:07:23] <linuxbot_> after "make dtbs" its giving make dts Error: arch/arm/boot/dts/am335x-boneblack.dts syntax error FATAL ERROR: Unable to parse input tree
  • [11:07:44] <jackmitchell> it should give you the line number of where it went wrong too
  • [11:07:56] <linuxbot_> yes its giving that too
  • [11:08:21] <linuxbot_> but removed that its giving exactly over here i2c1: i2c@4802a000 {
  • [11:08:55] <jackmitchell> pastebin the whole error and the whole dts
  • [11:09:06] <linuxbot_> sure
  • [11:13:05] <linuxbot_> http://pastebin.com/4NBUAGxp
  • [11:13:55] <jackmitchell> I think you need an & before i2c1
  • [11:14:30] <jackmitchell> ah, wait, probably not, if that is the first declared instance of i2c1?
  • [11:15:18] <linuxbot_> basically in header file its declared
  • [11:15:34] <jackmitchell> yes, i2c1 is declared in am335x-bone-common
  • [11:15:45] <linuxbot_> status = "disabled"
  • [11:15:48] <jackmitchell> you need to change line 19 to:
  • [11:15:54] <jackmitchell> &i2c1 {
  • [11:16:00] <jackmitchell> you don't need to redefine it
  • [11:16:11] <linuxbot_> i did that i took node name as refernce
  • [11:17:04] <linuxbot_> then there is no error but after compiling we get <filename>.dtb, i converted again to <filename>.dts
  • [11:17:21] <linuxbot_> to check this is included or not
  • [11:17:30] <linuxbot_> i couldnt find...
  • [11:17:44] <jackmitchell> why don't you try booting it and then reading the device tree from the running kernel
  • [11:18:10] <linuxbot_> yes i did i have written a driver with minimal probe
  • [11:18:27] <jackmitchell> and i2c1 wasn't present?
  • [11:18:28] <linuxbot_> am able to insert the driver but my probe is not called
  • [11:19:29] <jackmitchell> and no errors in dmesg?
  • [11:19:37] <linuxbot_> no errors...
  • [11:19:56] <jackmitchell> get that printk out and start following it back then I'm afraid
  • [11:19:57] <linuxbot_> so what happens if i redclare no issues write
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  • [11:20:01] <linuxbot_> it has to include
  • [11:20:18] <jackmitchell> I doubt it is devicetree related if it's compiling fine and there are no errors on boot
  • [11:20:28] <linuxbot_> no errors
  • [11:21:31] <jackmitchell> the only other thing is maybe the pinmuxing
  • [11:21:35] <jackmitchell> I don't see any in your dts
  • [11:21:38] <jackmitchell> for iec2
  • [11:21:46] <jackmitchell> i2c1*
  • [11:21:48] <linuxbot_> hmm
  • [11:22:07] <linuxbot_> see there are couple of included files
  • [11:22:21] <linuxbot_> in one of the included file pin muxing details are there
  • [11:22:41] <jackmitchell> for i2c1? and you are enabling the pinmux where?
  • [11:23:52] <linuxbot_> ok
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  • [11:55:10] <Rocky12345> hello
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  • [11:56:01] <RockyZheng> world
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  • [13:39:30] <Mauro__> Hi
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  • [13:42:29] <Mauro__> On a BBB I can't boot from the eMMC but I can alwas from an SD. When I try to boot with no SD all the lights are on and nothing happens. I suspect that there's a problem with my eMMC. When I hexdump /dev/mmcblk1boot0 and 1, it's just empty.
  • [13:43:32] <stt_michael> Mauro__ .. can you connect a serial debug cable to your BBB?
  • [13:43:49] <Mauro__> I don't have one :(
  • [13:44:16] <Mauro__> it looks like I'll have to go shopping
  • [13:44:22] <stt_michael> I don't suspect you'll see anything meaningful from the mmc<etc>boot partitions
  • [13:44:43] <Mauro__> sure but empty is ok?
  • [13:44:47] <stt_michael> you'd probbaly be better off checking the 'mmcblkXpY' partitions
  • [13:45:03] <Mauro__> these are fine
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  • [13:45:18] <bender> hello
  • [13:45:19] <stt_michael> you should see X = 0 and 1 for uSD and eMMC .. and there should be a Y=1/2 for each
  • [13:45:35] * anujdeshpande (~Thunderbi@59.99.244.28) has joined #beagle
  • [13:45:47] <stt_michael> you can then mount /dev/mmcblkXpY and check contents.
  • [13:45:58] <bender> any advice / tutorial on using the BBB as a web host for my site?
  • [13:46:29] <stt_michael> Mauro__ .. do you have to hold the BOOT switch down on the BBB to boot from uSD?
  • [13:46:33] <Mauro__> I did that and I've made any possible change to the uEnv
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  • [13:46:42] <stt_michael> bender .. just install a web server and you're good to go
  • [13:46:44] <Mauro__> no I don't have to
  • [13:46:58] <Mauro__> if the SD with MLO is there, it boots from the SD
  • [13:47:25] <Mauro__> I'm running archlinux on this BBB
  • [13:47:28] <stt_michael> Mauro__ .. then I suggest you have an ok bootloader in the eMMC .. you just need to fix u-boot and the kernel, and any uEnv
  • [13:48:11] <Mauro__> I copied the one from the booting SD to the eMMC, no luck
  • [13:48:32] <stt_michael> Mauro__ .. that is unlikely to work as the device addresses will be different
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  • [13:48:55] <stt_michael> and if it happens to use UUIDs .. they won't exist when you remove the uSD, for example
  • [13:49:25] <Mauro__> I don't use uuids
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  • [13:51:31] <Mauro__> it was working fine until I upgraded the kernel
  • [13:52:34] <stt_michael> on the emmc or the uSD?
  • [13:52:40] <Mauro__> on the emmc
  • [13:52:58] <stt_michael> what method/scripts are you using, out of interest?
  • [13:53:12] <Mauro__> arch way with pacman
  • [13:53:52] <stt_michael> not used arch personally
  • [13:53:57] <Mauro__> well I can reinstall the whole thing with another distro
  • [13:54:04] <Mauro__> and see what happens
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  • [13:54:40] <Vaizki_> better to get the ttl console cable
  • [13:54:43] <stt_michael> the instructions at http://archlinuxarm.org/platforms/armv7/ti/beaglebone-black look straightforward .. but you have to be careful compiling custom kernels
  • [13:55:01] <stt_michael> the debug cable will tell you whats going on on a serial console
  • [13:55:15] <Vaizki_> I run arch on my BBB
  • [13:55:20] <Vaizki_> it's quite nice really
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  • [13:55:50] <stt_michael> always a handy thing to have .. a serial console :)
  • [13:55:55] <Vaizki_> Mauro__: you can of course downgrade your kernel on the eMMC?
  • [13:56:12] <Mauro__> yes sure
  • [13:56:18] <Vaizki_> and see if it works
  • [13:56:27] <Mauro__> I'll try that :P
  • [13:56:32] <Vaizki_> you know how to do it?
  • [13:56:45] <Mauro__> no but google knows
  • [13:56:46] <Mauro__> :P
  • [13:56:57] <Vaizki_> good attitude :)
  • [13:57:05] <stt_michael> Ask the Oracle (google) :)
  • [13:57:52] <Vaizki_> to get you started, mount the emmc partitions, then arch-chroot to it
  • [13:58:18] <Vaizki_> then you can use pacman etc on the emmc install while running off the uSD kernel
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  • [13:59:23] <Vaizki_> your old kernel package should be in /var/cache/pacman/pkg
  • [13:59:41] <Mauro__> I always clean the cache
  • [13:59:46] <Mauro__> I'm running out of space
  • [13:59:53] <Vaizki_> well then you're out of luck...
  • [14:00:03] <Vaizki_> what is the kernel version you upgraded to?
  • [14:00:16] <Mauro__> I was using the legacy kernel
  • [14:00:24] <Mauro__> linux-am33x-legacy-3.8.13-14
  • [14:00:38] <Mauro__> I will try with the standar
  • [14:00:41] <Mauro__> linux-am33x-3.12.8-1
  • [14:00:49] <Vaizki_> that will probably break lots of stuff
  • [14:00:56] <Vaizki_> if you use gpio etc
  • [14:01:08] <Mauro__> no gpio
  • [14:01:17] <Mauro__> it's just my named server :P
  • [14:01:20] <Vaizki_> ah
  • [14:01:23] <Vaizki_> should be ok then
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  • [14:11:22] <Mauro__> well thanks for the help
  • [14:11:32] <stt_michael> np
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  • [14:11:48] <Mauro__> I'll try this afternoon the boot from emmc
  • [14:12:03] <Mauro__> bye!
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  • [14:43:03] <tsoin> hi there, I wonder if my question is apropriated here : I'd like to make a performance test with beaglebone black = simply make a task that switch a GPIO that is monitored by an oscilloscope
  • [14:44:06] <tsoin> sry about such a simple question but I've read the Adafruit, derek molloy tutorials and videos and I'm still not understanding which is the correct GPIO I can use in my test program in task
  • [14:46:27] * willingc (~willingc@cpe-75-80-19-24.san.res.rr.com) Quit (Remote host closed the connection)
  • [14:46:55] <stt_michael> tsoin .. toggling GPIOs with sysfs is quite slow .. have you looked at the /dev/mem methods and using the PRU module?
  • [14:47:33] <LetoThe2nd> look *ONLY* at the PRU, please.
  • [14:47:38] <mdp> heh
  • [14:47:42] <LetoThe2nd> you have never heard of /dev/mem
  • [14:47:47] <stt_michael> lol ok ok :p
  • [14:48:08] <stt_michael> tsoin .. try http://elinux.org/EBC_Exercise_10_Flashing_an_LED to prove the basics out
  • [14:48:31] <tsoin> for simplicity I didn't said that I currently Xenomai
  • [14:48:32] * stt_michael is gonna have to investigate these 'ere PRU thingies ..
  • [14:48:47] <LetoThe2nd> if you want to ride the registers, respectively gpios directly on the main cpu, write a kernel module. but, NEVER EVER listen to some one who tells you to poke /dev/mem
  • [14:49:49] <tsoin> well indeed LetoThe2nd : I've seen the posts about /dev/mem and I'm not sure that bypassing the kernel by accessing direcly to /dev/mem is a good thing
  • [14:50:05] <stt_michael> very risky
  • [14:50:20] <stt_michael> unless you know Precisely what you're doing .. which, I admit .. most people won't be.
  • [14:50:39] <tsoin> that's why I've "tried" to understand devicetree : failed
  • [14:50:46] <tsoin> ;)
  • [14:50:46] <LetoThe2nd> nobody does, because there literally is no point to it.
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  • [14:51:13] <stt_michael> you will need to master device-trees unfortunately .. but it will prove worthwhile to get the PRUs going
  • [14:51:21] <tsoin> really ? you make my day I was feeling like dumb
  • [14:51:42] <stt_michael> from a quick search .. I can see people have worked xenomai/pru's on the beagle for PWM/CNC and suchlike
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  • [14:53:34] <tsoin> well PRU is a great thing from TI btw I just 1st want to focus on Xenomai (machinekit) perfs btw
  • [14:54:02] <tsoin> stt_michael : that is the pointer I needed
  • [14:54:23] <nicknick> hello all, I have a question regarding uart, now I am testing on BBB and would like to enable one of UART say UART3. But I would like to implement the uart driver in a customized way, so how can I do that? what I dont understand is we are using DTS, shall we implement the driver in DTS or change it in the kernel?
  • [14:54:34] <stt_michael> linuxCNC seems to be quite an interesting project :)
  • [14:55:04] <tsoin> and it evolves as machinekit brings new capes
  • [14:55:07] <stt_michael> nicknick .. you can force loading of the UART capes with capemgr .. which will enable the ports
  • [14:55:16] <av500> nicknick: define "customized"
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  • [14:55:44] <stt_michael> alternatively .. have a look at the device-tree files for the UART capes .. to see what you want to achieve
  • [14:56:07] <tsoin> stt_michael : to be honest currently I use it to gain time patching and compiling Xenomai myself
  • [14:56:09] <nicknick> customized means it will not implement a general uart, I would like to implement a decoder which will check the message pattern there
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  • [14:56:51] <tsoin> thank you all (I m not so dumb after all ;o) )
  • [14:56:52] <LetoThe2nd> sounds like its not a uart driever, but a protocol sitting on top
  • [14:57:14] <nicknick> yes you can say that
  • [14:57:38] <nicknick> but my idea is that the kernel space check the pattern and decide when to forward the message up to the user space
  • [14:57:51] <stt_michael> methinks the physical layer will be the same. . what you do with it on top is up to you
  • [14:58:04] <LetoThe2nd> nicknick: "sounds like a protocol"
  • [14:58:05] <stt_michael> nicknick .. write a kernel driver on top of the port
  • [14:58:26] <LetoThe2nd> nicknick: there are quite some examples for you there, lipe SLIP, PPP, whatever.
  • [14:58:26] <nicknick> how to do that
  • [14:58:43] <stt_michael> LetoThe2nd .. PPP is very much userspace :p
  • [14:58:56] <LetoThe2nd> stt_michael: part of it, yes. not all AFAIK
  • [14:59:08] <mdp> nicknick, you seem to think you can implement a custom driver using DTS data..what do you mean by that?
  • [14:59:25] <nicknick> I just ask if this is possible
  • [14:59:33] <nicknick> I can make an example
  • [14:59:43] <mdp> DT is a data definition that defines h/w...so no.
  • [14:59:51] <mdp> it doesn't "do" anything
  • [14:59:54] <LetoThe2nd> http://lxr.free-electrons.com/source/drivers/net/slip/
  • [14:59:54] <stt_michael> nicknick .. start with http://www.tldp.org/LDP/lkmpg/2.4/html/book1.htm
  • [15:00:42] <nicknick> now if I do reading from uart, the data will come anytime, but what I want to do is to check the data if the data has the correct header and ender, then let the kernel forward it to the user space, so that my user space will always get the correct pacakage
  • [15:01:08] * LetoThe2nd sets the post "sounds like a protocol" to auto-repeat
  • [15:01:10] <mdp> nicknick, read the links others posted..they show implementations of what you describe
  • [15:01:57] <nicknick> looks great, then do I still use dts to cape the uart?
  • [15:02:05] <LetoThe2nd> even irtty-sir should be something like it, AFAICS
  • [15:02:06] <stt_michael> you'll need to configure the processor/port using a Device-Tree file (either predefined or custom) .. then write some software that talks to the /dev/XYZ node created by it
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  • [15:04:29] <nicknick> OK, so if I understand correctly, I could implement a top module standing on the uart port driver and set up the pin port by dts when it boots up?
  • [15:05:20] <stt_michael> nicknick .. yes thats pretty much it
  • [15:05:28] <nicknick> and the top module and read the uart data one byte by another?
  • [15:05:52] <LetoThe2nd> basically yes.
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  • [15:06:25] <stt_michael> depends how you implement your module .. I guess there are interrupts available for UARTs
  • [15:06:37] <LetoThe2nd> the sense in this design is that this protocol module then is able to work on any serial line which has the hardware capabilites. e.g. on your desktop for testing, for example.
  • [15:08:20] <nicknick> yes thats what I want to do
  • [15:08:34] <nicknick> any example about protocol on uart?
  • [15:08:39] <LetoThe2nd> *sigh*
  • [15:09:08] <LetoThe2nd> go back about 10 minutes. thanks.
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  • [15:09:19] <nicknick> http://lxr.free-electrons.com/source/drivers/net/slip/ this one is
  • [15:09:25] <nicknick> sorry
  • [15:10:48] <nicknick> how can I attach the driver to the device I connect to the laptop? for example, when I connect a tty device, it will show ttyUSB0 and use the general driver, how can I force the system to use the protocol driver?
  • [15:10:51] <LetoThe2nd> that together with drivers/net/irda/irtty-sir.c are two most simple implementations i could find right now
  • [15:11:09] <av500> do it in user space
  • [15:11:13] * kbart (~KBart@213.197.143.19) Quit (Remote host closed the connection)
  • [15:11:18] <LetoThe2nd> even that would work
  • [15:11:33] <LetoThe2nd> (if not tied to very severe timing constraints)
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  • [15:11:45] <LetoThe2nd> and would be WAAAAAY easier probably
  • [15:12:05] * tema (~tema@ppp89-110-28-20.pppoe.avangarddsl.ru) Quit (Ping timeout: 248 seconds)
  • [15:12:11] <nicknick> I have some time constraints thats why I put it in the kernel
  • [15:12:21] <LetoThe2nd> define "timing constraint"
  • [15:12:32] <nicknick> real time system
  • [15:12:42] <nicknick> i patched rt patch
  • [15:12:44] <LetoThe2nd> thats not a "timing constraint", its a buzzword
  • [15:12:58] <av500> a patched patch?
  • [15:13:16] <LetoThe2nd> a patched patch patcher.
  • [15:13:31] * dgerlach (~dave@nat/ti/x-eyuxezjchvakpkfm) Quit (Quit: Leaving.)
  • [15:13:56] <tsoin> from http://elinux.org/EBC_Exercise_10_Flashing_an_LED example (gpio1_28 ) is about bb white: how to transpose available GPIO for black ?
  • [15:14:47] * n0n0 (~n0n0___@2602:306:c410:500:38a0:1b22:47d9:cb8b) Quit (Ping timeout: 272 seconds)
  • [15:14:51] <nicknick> so say that
  • [15:15:03] <LetoThe2nd> "that"
  • [15:15:41] <nicknick> I have a sensor streamming data all the time to BBB, and I would like to receive messages directly from kernel space rather than uart data
  • [15:15:52] <LetoThe2nd> you are evading.
  • [15:16:15] <av500> you dont make sense
  • [15:16:24] <av500> in the end, the very same data ends up in user space
  • [15:16:32] <av500> minus framing maybe
  • [15:16:38] <av500> but with the same latency constraints
  • [15:16:40] <panto> if you want to do cooking of the uart data you have to do a tty discipline
  • [15:17:10] <nicknick> ok the data from sensors has the same latency
  • [15:17:43] <LetoThe2nd> don't do buzzwords, give numbers.
  • [15:17:50] <nicknick> but I just want to get the complete message
  • [15:18:37] <LetoThe2nd> for the user theres no difference in a library or the kernel doing the handling. for the developer, there is.
  • [15:19:08] <LetoThe2nd> and even if you do things in kernel space, data has to be transferred to userspace, etc.
  • [15:19:21] <nicknick> say one message has 10 bytes, if i directly read from uart, sometimes I only read 6 or 8 bytes. I want to use the kernel space to trigger when to store the data in the buffer
  • [15:19:28] <LetoThe2nd> so without *real* numbers on timing constraints, you are blabbering pointlessly.
  • [15:19:53] <av500> nicknick: why do you read only 6 or 8 bytes?
  • [15:19:53] <panto> nicknick, tty discipline
  • [15:19:58] <av500> your cable that bad?
  • [15:20:15] <LetoThe2nd> av500: thou shalt donate a new cable.
  • [15:20:16] <panto> you want to cook the data from a uart so that userspace gets complete messages
  • [15:20:26] <panto> whatever the message unit for you app is
  • [15:20:33] * LetoThe2nd heads off, don't feel like repeating all over
  • [15:21:13] <av500> LetoThe2nd: too late, burned into my ears
  • [15:21:36] <tsoin> I propose a recreation for the mind with my question ;op
  • [15:22:04] <nicknick> yes panto
  • [15:22:22] <nicknick> so whats the idea
  • [15:22:35] <panto> I am telling you
  • [15:22:35] <av500> a line discipline
  • [15:22:37] <nicknick> discipline or protocol module?
  • [15:22:38] <av500> look it up
  • [15:22:52] <panto> everything has been done before
  • [15:23:09] <panto> unix has a longer history than 50% of the people on this channel
  • [15:23:15] <panto> don't reinvent the wheel
  • [15:23:20] <av500> s/been done/happened/
  • [15:23:25] <av500> and it will happen again
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  • [15:24:30] <tsoin> should I consider GPIO1_28 on white on pin 60 is available on the same (pin60) for the black one ?
  • [15:24:43] <nicknick> say I finish the kernel dirver, how to test it with general uart device
  • [15:24:54] * jkridner (~jkridner@pdpc/supporter/active/jkridner) Quit (Remote host closed the connection)
  • [15:25:00] <nicknick> I have a serial 2 usb cable,
  • [15:25:07] <nicknick> the port will be ttyUSB0
  • [15:25:18] <nicknick> that uses general tty driver, right?
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  • [15:26:25] <panto> you use a user-space app that pushes that discipline to the fd it's opening
  • [15:26:46] <panto> http://www.linux-mag.com/id/1891/
  • [15:27:08] <panto> (I should start charging)
  • [15:27:30] <av500> panto: charging at the red cape?
  • [15:27:36] <av500> head low?
  • [15:27:41] <panto> down low low
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  • [15:28:07] <av500> panto: 2001, thats for another version of Linux
  • [15:28:17] <av500> the steam powered one
  • [15:28:26] <panto> choo choo m**********r
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  • [15:29:05] <panto> k, conf-call time, l8r
  • [15:29:32] <av500> panto: be kind to the people from bavaria
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  • [15:30:01] <stt_michael> o,o
  • [15:30:57] <tsoin> should I consider GPIO1_28 on white on pin 60 is also available on the same (pin60) for the black one ?
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  • [15:31:28] <stt_michael> the capes should be mostly standard.... *waits for flame*
  • [15:32:04] <tsoin> ?
  • [15:33:27] * anujdeshpande (~Thunderbi@59.99.244.28) Quit (Read error: Connection reset by peer)
  • [15:33:42] <stt_michael> check the BBB ref. manual tsoin
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  • [15:34:01] <stt_michael> and/or white one too
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  • [15:37:04] <nicknick> thank you all!
  • [15:37:08] <tsoin> well I've look at the header table where I can see the gpio1[28] = P9_12 on black
  • [15:37:32] <tsoin> if this is what you meant stt_michale
  • [15:38:31] <stt_michael> if the gpio on white matches the gpio on black ..that answers your question, no?
  • [15:39:01] <stt_michael> (reading header table from each SRM)
  • [15:39:30] <tsoin> wasn't sure that available gpios on white = available ones in black
  • [15:39:57] <tsoin> no I am
  • [15:40:02] <tsoin> now
  • [15:40:03] * anujdeshpande1 (~Thunderbi@59.99.244.28) Quit (Ping timeout: 252 seconds)
  • [15:40:46] <stt_michael> best way is to check .. I -believe- the capes are designed to be cross-compatible .. even if the software support lacks it
  • [15:41:14] <tsoin> but I suppose that in a future I'd have to dig in devicetree if I want to free some GPIOs/Pins right ?
  • [15:42:09] <stt_michael> you'll need to configure the pin_muxes in the device-tree yes
  • [15:42:47] <tsoin> even if I know that this is a fresh implementation, why isn't there an automagic tool for that, it would save brain & time
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  • [15:43:23] <stt_michael> tsoin .. cos nobody has made it yet
  • [15:43:23] <tsoin> but I 'm sure there is a reason against this
  • [15:43:32] <tsoin> really ?
  • [15:43:48] <tsoin> oww
  • [15:43:49] <stt_michael> device-trees are still relatively new .. and specific to each processor
  • [15:44:20] <stt_michael> there is a bonescript available for beagles .. but its usage I wouldn't be certain about
  • [15:44:54] <tsoin> but they seems to share the same syntax from dt wiki no ?
  • [15:45:14] <stt_michael> the DT is a standard :)
  • [15:45:14] <tsoin> I mean : reading a dts produces the same result
  • [15:45:15] <tsoin> exact
  • [15:45:18] * falstaff_ (~quassel@62-12-211-137.pool.cyberlink.ch) Quit (Ping timeout: 252 seconds)
  • [15:46:23] <tsoin> I'm frustrated that I don't got it all that thing, a Qt app shouldn't be so hard to import DT and let it be changed
  • [15:46:49] * nicknick (c2ed8e0a@gateway/web/freenode/ip.194.237.142.10) Quit (Ping timeout: 272 seconds)
  • [15:46:51] <tsoin> anyway
  • [15:47:02] <stt_michael> make one ;)
  • [15:47:45] <tsoin> np, there is a long time I'd like to bring OS community part of participation.
  • [15:48:51] <av500> you can use vi to import and change a device tree
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  • [15:49:20] <stt_michael> av500.. or any other general text editor :p
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  • [15:49:46] <tsoin> well vi is great (no troll in it) but there is no script/macro to ease the DT modification/comprehension
  • [15:49:49] <stt_michael> I don't suppose vi has device-tree colour highlighting :P
  • [15:50:17] <stt_michael> and/or automagic indentation etc lol
  • [15:50:34] * das (~das@217.108.83.254) Quit (Quit: Lost terminal)
  • [15:50:58] <tsoin> what think should be interesting is : allowing changes to generate a new dts
  • [15:51:18] <tsoin> import dts -> changes -> export
  • [15:51:45] <tsoin> in addition this would leave space from questions as mine here ;)
  • [15:51:46] <av500> yes, its called text file editing
  • [15:52:01] <av500> I think the actual kernel is changed in the same way
  • [15:52:40] <tsoin> @av500 : I m ok to text editing (vi, emacs, etc) but you need to understand modes, and how all of this is working behind the scenes
  • [15:52:48] <av500> ?
  • [15:53:02] <mdp> av500, unlike bootloaders which are written by teams of trained monkeys..though maybe they use vi too
  • [15:53:55] <tsoin> av500 maybe you missed what I said before, but I felt lost after trying to understand DT from its wiki, or even...adafruit (which should be simple)
  • [15:54:31] <tsoin> http://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree?view=all
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  • [15:58:02] <mdp> tsoin, nothing exists like you are wishing for
  • [15:58:27] <mdp> however, presumably the community would be happy if you created and shared such a tool
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  • [16:00:10] <av500> I would give a dogecoin
  • [16:00:21] <tsoin> mdp : I don't doubt about it,and will be happy to do this. I just need to understand all this stuss is (what modes are, etc)
  • [16:01:39] <stt_michael> av500 .. what Would you give!? :)
  • [16:02:01] <tsoin> as I'm sure that -if nothing like this existing yet- many people would find it usefull
  • [16:02:10] <mdp> tsoin, you can google for various getting started guides on beaglebone/black that explain pinmuxing
  • [16:02:28] <mdp> tsoin, and you can consult the SRM, TRM, and datasheet linked on bb.org as reference to back up those guides
  • [16:02:44] <tsoin> I did :the prob is between my chair & my keeboard
  • [16:03:11] <mdp> we can't fix that ;)
  • [16:03:34] <mdp> do note that many sites you will encounter are outdated so will have some misinformation
  • [16:03:42] <mdp> depending on what kernel you use
  • [16:03:48] <tsoin> 3.8.13
  • [16:03:55] <mdp> 3.2, 3.8, and mainline all do things differently
  • [16:04:14] <tsoin> 3.8.13xenomai-bone26.1
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  • [16:04:45] <mdp> so you should only read up on guides that use dt overlay style examples then
  • [16:05:14] <tsoin> that is a information !
  • [16:05:18] <mdp> http://bbbadventures.blogspot.com/2013/06/pinmuxing.html
  • [16:05:33] <mdp> read them all, that's one
  • [16:06:02] <mdp> https://www.google.com/search?q=pinmux+beaglebone&oq=pinmux+beaglebone
  • [16:06:17] <tsoin> ))
  • [16:06:53] <tsoin> so should I consider that the Derek molloy is outdated
  • [16:06:55] <tsoin> ?
  • [16:07:32] <mdp> http://elinux.org/BeagleBone_and_the_3.8_Kernel
  • [16:07:42] <mdp> I don't know who that is..post a link and I can advise
  • [16:07:52] <mdp> there's 1.21 jazillion random blog posts on bone/bbb
  • [16:08:00] <mdp> 7 of which have correct information
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  • [16:09:42] <av500> 6.5
  • [16:10:17] <tsoin> no no . I meant that the official proposed from official : http://elinux.org/BeagleBone_Community -> Tutorials and Videos ( Beaglebone: GPIO Programming on ARM Embedded Linux, video by Derek Molloy,)
  • [16:11:56] <stt_michael> be careful between 'beaglebone' and 'beaglebone black'
  • [16:12:48] <mdp> ok, to clarify, that's on the elinux community page which any of us can edit
  • [16:13:10] <mdp> so it's not truly "official"...however that would be defined
  • [16:13:19] <tsoin> stt_michael : that's why I did asked before as the both srm didn't show the same pin mappings
  • [16:13:40] <tsoin> mdp : I ll keep it in mind now
  • [16:13:47] <mdp> "Note: This video was made before the Linux device tree was implemented on the beaglebone (beaglebone black uses Linux 3.8.11). I have a new video coming in a few days that explains how to do the same thing on the beaglebone black using device tree overlays."
  • [16:13:49] <stt_michael> tsoin .. which was why I advised you check, check and check again :)
  • [16:14:04] <stt_michael> mdp .. better wait a few days then :D
  • [16:14:30] <mdp> "Published on May 3, 2012"
  • [16:14:33] <mdp> ;)
  • [16:14:43] <stt_michael> ahahaha .. welcome to the internet -sigh- epicfail
  • [16:14:58] <tsoin> nope: I did checked the newest video about DT but this isn't more clear
  • [16:15:02] <mdp> tsoin, thanks for pointing that out..we can shove that to a "3.2" subpage
  • [16:16:47] <mdp> stt_michael, to be fair, I have outdated blog entries about bone too :)
  • [16:17:01] <stt_michael> mdp .. tut tut !! :P
  • [16:17:15] * stt_michael is yet to create outdated blog entries ... >,<
  • [16:17:17] <tsoin> found it : http://www.youtube.com/watch?v=wui_wU1AeQc&list=PLF4A1A7E09E5E260A&feature=share&index=10
  • [16:17:34] <mdp> stt_michael, I'm driven more by revenue-bearing tasks ;)
  • [16:18:05] <stt_michael> mdp: mostly, likewise :)
  • [16:18:12] <tsoin> which is June 2013
  • [16:18:29] <stt_michael> that suggests "a few days" happened ... !
  • [16:18:31] <mdp> tsoin, sounds good...drew fustini's comment on it is an indicator that it's probably a good one
  • [16:18:49] <tsoin> aaah greaat !
  • [16:19:01] <tsoin> who is drew ?
  • [16:19:08] <tsoin> ;)
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  • [16:26:05] <tsoin> btw thanks all for your patience, I promise I won't listen to Celine Dion anymore (ie: save brain )
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  • [16:28:55] <stt_michael> hahahaha
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  • [16:59:57] <prpplague> just fyi for anyone still looking for a beaglebone black, special computing has plenty of stock
  • [17:00:09] <prpplague> https://specialcomp.com/beaglebone/index.htm
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  • [17:04:18] <stt_michael> how are the uk suppliers doing prpplague!? :)
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  • [17:16:52] <prpplague> stt_michael: farnel and element14 have been taking stock every week, but they are filling back orders first
  • [17:17:17] <stt_michael> hehe ok
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  • [17:19:44] <prpplague> stt_michael: we've bumped up production from 5k a week to 7k a week
  • [17:19:52] <stt_michael> excellent news!
  • [17:20:06] <stt_michael> found some extra hamsters?! :)
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  • [17:22:38] <prpplague> stt_michael: we took one of the other productions lines off other products to use for black
  • [17:23:07] <stt_michael> cool .. hope the other project doesn't suffer too much!
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  • [17:23:20] <prpplague> s/project/products
  • [17:23:49] <prpplague> we'll put it back online with other stuff once the demand levels out
  • [17:24:16] <stt_michael> gotta do my customs dec .. and you can have mine back .. :)
  • [17:25:22] <prpplague> stt_michael: ??
  • [17:25:28] <prpplague> stt_michael: rma?
  • [17:25:32] <stt_michael> rma .. got a beagle which died :)
  • [17:25:39] <prpplague> stt_michael: ahh
  • [17:26:04] <stt_michael> I suspect from gerald's posts it might just be the pmic
  • [17:26:26] <stt_michael> I'm not comfortable taking it off myself .. and postage isn't too bad .. so I can trust it to your skilled hands over there!
  • [17:27:04] <stt_michael> if it turns out the processor is toast .. well ..
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  • [18:02:17] <ivancea96> .
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  • [18:40:44] <bonebeagle> hi, can anyone tell me if there is another cheaper solution besides Dual Motor Controller Cape (DMCC) Mk.6 for dc motor control on beaglebone black?
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  • [18:42:11] <prpplague> bonebeagle: are you just wanting standard motors or steppers?
  • [18:42:43] <bonebeagle> i have a choice between regular dc motors or unipolar stepper motors
  • [18:44:52] <prpplague> bonebeagle: the new moto cape from boardzoo will be available in about 2 weeks
  • [18:45:19] <prpplague> bonebeagle: http://elinux.org/CircuitCo:Moto_Cape
  • [18:45:34] <bonebeagle> yeah but there is not much support for that cap
  • [18:46:59] <prpplague> bonebeagle: plenty of support
  • [18:47:12] <prpplague> bonebeagle: it's so simple to use there doesn't have to be any support, hehe
  • [18:47:47] <mdp> self-supporting-products
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  • [18:47:52] <mdp> like self-documenting-code
  • [18:47:56] <bonebeagle> i see
  • [18:47:59] <prpplague> bonebeagle: it's based on the arduino shield https://www.sparkfun.com/products/9815
  • [18:48:07] <prpplague> bonebeagle: which has been around for a long time
  • [18:48:13] <prpplague> bonebeagle: tons of examples
  • [18:48:54] <prpplague> bonebeagle: the same configuration is being used in the georgia institute of technology online robotics course
  • [18:49:24] <bonebeagle> beaglebone and moto cap?
  • [18:50:00] <prpplague> bonebeagle: https://www.coursera.org/course/conrob
  • [18:50:29] <prpplague> bonebeagle: they are building the moto cap up manually on protoboard, but yes it's the same schematic, just that the moto cape is preassembled
  • [18:51:07] <bonebeagle> nice
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  • [18:54:51] <bonebeagle> one last question, i will be using opencv with c920 camera and a pan and tilt system, would a hs458b servo motor be fast enough for tracking ?
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  • [19:05:19] <stt_michael> bonebeagle .. that is not really a software issue :)
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  • [19:08:40] <stt_michael> home time .. bbl :p
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  • [20:22:41] <lee> I would really like a BBB now, but not this much: http://www.ebay.co.uk/itm/151129146702
  • [20:23:07] <johnwalkr> wow
  • [20:23:21] <johnwalkr> i paid almost $100 for one and that was out of control
  • [20:24:34] <Qiang_Fu_Kiwi> I should sell the ones i have at that price!
  • [20:25:43] <mdp> I can offer empty BBB boxes for $50
  • [20:25:50] <mdp> you can do partial unboxing videos at least
  • [20:26:37] <tbr> I still have a box, slightly ripped, would sell it for 10???
  • [20:27:22] <mdp> buy now, there may never be stock again and at least you'll have a box to show your friends.
  • [20:29:26] <lee> lol
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  • [20:43:26] <Qiang_Fu_Kiwi> beaglebone availablity is a topic in every mailing list digest.
  • [20:43:29] <Qiang_Fu_Kiwi> :-)
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  • [20:51:21] <prpplague> Qiang_Fu_Kiwi: hehe yea
  • [20:52:01] <prpplague> Qiang_Fu_Kiwi: as of this morning, all the major distributors are _almost_ in positive territory
  • [20:52:12] <prpplague> Qiang_Fu_Kiwi: they are filling backorders first
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  • [21:33:49] <beaglekhan> i just got my beaglebone black and i am busy flashing the image
  • [21:34:05] <beaglekhan> i am trying to find a wifi toggle
  • [21:34:20] <beaglekhan> most of the posts seem to be confusing
  • [21:34:28] <beaglekhan> does naybody hace any experice
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  • [21:35:55] <beaglekhan> miniature wifi.....can someone provide ur guidance
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  • [21:43:12] <dogrocket> hello... anyone familure with doing program builds on linux? I have a problemo
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  • [22:13:38] <dogrocket> anyone know what the message could not find version.texi means when building a program?
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  • [22:19:44] <awozniak> I'm seeing high cpu usage in a kworker thread when streaming video from a UVC camera on a 3.7 kernel. Are there any known USB performance issues in that kernel? Where can I find stuff like that?
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  • [22:23:07] <woglinde_> usb is shitty
  • [22:23:14] <woglinde_> always
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  • [22:23:47] <awozniak> woglinde_: I've been tasked with making it less shitty in our product. =)
  • [22:24:05] <woglinde_> oh poor one
  • [22:24:34] <woglinde_> bbb?
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  • [22:25:52] <woglinde_> and why kernel 3.7 it is no LTS
  • [22:26:31] <woglinde_> but anyway was a tough day
  • [22:26:34] <woglinde_> so godd nite
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  • [22:41:49] <Rush_> Hi
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  • [22:42:49] <Rush_> Is anyone running Archlinux on BBB ?
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  • [22:46:59] <dogrocket> rush yep running arch here
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  • [22:47:33] <Vaizki_> also arch here
  • [22:47:51] <dogrocket> runs pretty good imo
  • [22:48:45] <Vaizki_> yea, well why wouldn't it..?
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  • [22:49:31] <dogrocket> dns was pain tho.. why arch required my dns to be router address and not the standard 8.8.8.8 my windows pc uses.. have no clue lol
  • [22:49:59] <Vaizki_> it doesn't
  • [22:50:35] <dogrocket> i fought it for hours and on whim put in my router ip for dns... and it started working..
  • [22:50:47] <Vaizki_> if you get an address from DHCP your network config probably allows DHCP to override the DNS
  • [22:50:58] <Vaizki_> hmmh.. well I use 8.8.8.8 on mine ;)
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  • [22:52:34] <dogrocket> not sure.. all i know is im dam glad i dont have to copy arch packages and git packages to windows first anymore.. woot
  • [22:54:04] <dogrocket> i heard kernel is actually robert nelsons ubuntu kernel stripped of all the dumb extras... seems to run a little faster than rcn's ubuntu in fact
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  • [22:55:05] <Rush_> Well, since i'm running arch without much installed my bbb is heating up and then crashes.
  • [22:55:23] <dogrocket> hrm... thats really odd rush
  • [22:55:47] <Rush_> It's fixed when i put on a heatsink.
  • [22:55:55] <dogrocket> just felt the chip, and its hardly warm... sounds like theres something else going on
  • [22:56:28] <dogrocket> have you checked your voltage and amp rating on power supply
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  • [22:57:02] <Rush_> Yes, it has nothing to do with that i guess
  • [22:57:09] <dogrocket> 5.2 volts is max...
  • [22:57:35] <rcn-ee> Rush_, i wonder if your running it with the performance governor enabled as default?
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  • [22:58:14] <Rush_> I am also using a usb wlan stick but i doubt this can heat up the processor no ?
  • [22:58:21] <dogrocket> howdy rcn
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  • [22:58:57] <rcn-ee> other then making the regulators give 500mA to the usb stick, that would warm some things up..
  • [23:00:06] <dogrocket> oh.. wifi can draw some juice from what ive heard
  • [23:00:26] <_av500_> its wireless, not powerless
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  • [23:01:16] <Rush_> The regulators seem ok, but it's really the processor heating up, and it happens really fast after boot
  • [23:01:17] <dogrocket> reading somewhere one chip requires over 1.5 ma.. and usb cant do it.. need powered hub, as i now have
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  • [23:01:25] <Vaizki_> something churning up the gpu or something crazy?
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  • [23:01:43] <_av500_> 1.5mA is nothing
  • [23:01:48] <_av500_> 1.5A is a lot
  • [23:02:11] <dogrocket> 1.5 amp.. sorry
  • [23:02:27] <Vaizki_> my BBB's running arch don't get hot either
  • [23:03:44] <Rush_> Is there an internal temperature sensor inside the cpu ?
  • [23:04:41] <dogrocket> rcn i have usb cdrom now working, same drivers will allow usb hard drive to run I assume?
  • [23:04:48] <Vaizki_> I guess there's a TMP275 but I never used it
  • [23:05:29] <Vaizki_> let me see..
  • [23:07:16] <Rush_> I guess there's something really wrong with the board, whenever it's hot, it works fine. But if i dare to reboot it, it just hangs at starting kernel. Then i have to wait a minute to have it cooled down and it just works again like nothing has happened
  • [23:09:20] <Vaizki_> am335x-bandgap-isa-0000
  • [23:09:31] <Vaizki_> I see a sensor like that.. with +60.0??C reported
  • [23:10:38] <Vaizki_> sounds like a too even number
  • [23:12:17] <dogrocket> what command you use to get that vaizki?
  • [23:13:04] <Vaizki_> just 'sensors' from lm_sensors
  • [23:13:56] <Vaizki_> I don't think it's a real reading
  • [23:14:02] <dogrocket> oh
  • [23:14:16] <Vaizki_> 60??C would feel quite hot
  • [23:14:26] <dogrocket> yeah..
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  • [23:19:50] <Rush_> I think 60??C is even quite low for mine
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  • [23:20:09] <Vaizki_> I should make the effort to jump from linux-am33x-legacy to the bleeding edge some day
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  • [23:20:41] <Rush_> I will do some temperature measurements tomorrow
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  • [23:21:49] <dogrocket> I saw TI was submitting usb patches to main linux dev track, I suppose we will reap that benefit someday
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  • [23:22:08] <Vaizki_> speaking of temp measurement.. -22??C outside as reported by my BBB
  • [23:22:16] <dogrocket> lol
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  • [23:23:10] <Vaizki_> well my neighbor's weather station says -20.0??C so they're not that far apart :)
  • [23:23:52] <dogrocket> wow really that cold? nice weather if your a penguin
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  • [23:24:21] <Vaizki_> yea well it's a bit colder still further up north in Finland
  • [23:24:31] <Vaizki_> we went below -40??C this week
  • [23:25:01] <dogrocket> ouch... gasonline starts freezing then
  • [23:25:10] <dogrocket> gasoline
  • [23:25:53] * onoffon (~kraj@66.129.246.4) Quit (Ping timeout: 272 seconds)
  • [23:26:03] <Vaizki_> yea well it's not as big a problem as diesel
  • [23:26:50] <dogrocket> Im sure... diesel probably froze solid, if it wasnt heated
  • [23:27:02] <Vaizki_> they do make special -44??C diesel for up north but normal is like -29/-34
  • [23:27:23] <Rush_> Lucky we are having a warm winter 5??C outside
  • [23:27:57] <dogrocket> I know in alaska they just leave vehicles and tank warmers running all the time when it gets really cold
  • [23:28:41] * florian (~fuchs@Maemo/community/contributor/florian) has joined #beagle
  • [23:28:44] <Vaizki_> yea well that's forbidden here
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  • [23:30:13] <dogrocket> think thats mostly for trucks though... because if they dont restart, they may not for weeks
  • [23:30:48] <Vaizki_> monday in Enonteki??, Finland.. high was -33??C and low -40??C
  • [23:31:00] <Vaizki_> that's shitty cold
  • [23:31:35] <dogrocket> -40 celcius is -40 ferhenhiet even if i cant spell it
  • [23:31:41] <Vaizki_> was only -20 here where I live
  • [23:31:50] <Vaizki_> you can't spell either in fact ;)
  • [23:32:00] <myself> I love the notion of don't-care cold. Where the scales cross you don't have to specify :P
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  • [23:32:41] <dogrocket> dam cold is another way of putting it.. lol
  • [23:32:41] <Vaizki_> well they cross at 32, not 40?
  • [23:32:52] <dogrocket> I thought it was 40
  • [23:32:58] <Vaizki_> hmm could be
  • [23:32:59] <dogrocket> could be wrong
  • [23:33:48] <Vaizki_> no you're right
  • [23:33:51] <Vaizki_> my head is not working
  • [23:34:06] <dogrocket> its 15 celcius here...
  • [23:34:13] <dogrocket> florida usa
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  • [23:34:52] <Vaizki_> around -40 is where your spit will freeze before hitting the ground
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  • [23:35:33] <dogrocket> ive been in -18 celcius that was cold enough for me
  • [23:36:27] <dogrocket> and my car wouldnt start... go figure
  • [23:37:36] <Vaizki_> and off to sleep&
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