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  • [00:00:49] * 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'
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  • [02:53:17] <GenTooMan> strapping an 18650 to the beagle board.. weird
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  • [03:34:44] <zmatt> it's just for testing
  • [03:37:40] <ds2> nothing weird with that
  • [03:38:15] <ds2> those are mighty thick wires
  • [03:38:29] <zmatt> it's a battery... hence battery wires ;-)
  • [03:40:05] <ds2> it looks like #12 wires
  • [03:40:10] <zmatt> possibly they may have been intended for slightly larger batteries
  • [03:40:30] <ds2> unless this is also the self destruct mechanism
  • [03:40:43] <zmatt> but they were lying around anyway in the big box of scrap wires
  • [03:40:56] <ds2> do you have a protection board on there?
  • [03:41:14] <ds2> I have a BBB wired up with a battery that size but with more appropriately sized wires
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  • [03:42:04] <zmatt> sure, if the battery overheats the PLA battery holder would probably melt and there's at least some chance the terminals would no longer make decent contact
  • [03:42:19] <zmatt> ;)
  • [03:42:20] <ds2> heheh
  • [03:42:24] <ds2> nice low cost system
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  • [03:42:49] <zmatt> besides, the lack of protection circuitry is a feature! it means lower self-discharge
  • [03:43:57] <zmatt> and the PMIC will shut off at 3.3V anyway, so the battery never gets drained really far
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  • [03:45:53] <zmatt> so as long as the positive terminal avoids a short-circuit with the battery casing that got exposed due to the battery-holder scratching the insulation, I think it'll be fine
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  • [03:47:12] <ds2> more from over charging
  • [03:47:46] <zmatt> at 4.1V ?
  • [03:48:35] <zmatt> (and I noticed the PMIC actually charges slightly below the configured voltage)
  • [03:49:15] <zmatt> if the voltmeter I used was accurate (it may not have been, I was at a hackerspace at the time)
  • [03:50:09] <ds2> depends on the exact chemistry
  • [03:50:16] <ds2> some are 4.2 and some are 4.1
  • [03:50:20] <ds2> also depends on temperature
  • [03:51:29] <zmatt> temperature is slightly above ambient (mostly due to its location, although there are spacers keeping the holder from actually touching any ICs)
  • [03:51:47] <zmatt> chemistry is the usual LCO
  • [03:51:52] <ds2> that's why there is the thermistor input...
  • [03:51:58] <ds2> there are variations
  • [03:52:01] <zmatt> the 10k resistor you mean? ;)
  • [03:52:27] <ds2> hopefully that 10K resistor has a very lousy tempco
  • [03:52:28] <zmatt> there are, but LCO is still the most common afaik
  • [03:53:00] <zmatt> the battery itself shouldn't (and last time I checked, doesn't) significantly heat up
  • [03:53:19] <ds2> a protection PCB is $1.50 so I don't take chances
  • [03:53:54] <zmatt> and I wasn't planning on introducing it to an environment outside 0-45 ͏°C, let alone charge it there
  • [03:54:02] <zmatt> yeah but this is just a quick hack for testing
  • [03:54:07] <ds2> *shrug* mistakes happen
  • [03:54:24] <ds2> a loose probe took out one of my BBB last year
  • [03:55:00] <zmatt> lesson learned: never let your probes loose, keep them on a tight leash
  • [03:55:23] <ds2> or use clips
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  • [06:03:12] <mimetonbo> Hello everyone, Im looking to get into embedded linux coming from a microcontroller background. I wanted to buy a beagleboard and the two options that I have are Raspberry Pi 2 and Beagle Bone Black. I am unsure of which one to buy. Anyone have any pointers on what things matter. My Objective is to learn about the internals of linux etc.
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  • [06:13:16] <zmatt> for linux itself it probably doesn't matter, though if you have any sort of interaction with the hardware you'll find the processor docs available for the broadcom chip on the rpi2 to be rather... limited
  • [06:13:34] <zmatt> (in comparison to those available for the am335x)
  • [06:14:29] <zmatt> also, rpi/rpi2 doesn't have real ethernet, which would be a turnoff for me
  • [06:16:02] <zmatt> (it has an usb hub chip with integrated ethernet controller, but that's a crappy deal compared to having ethernet support integrated in the SoC)
  • [06:19:37] <tbr> especially given that USB on those chips is usually rather...
  • [06:20:08] <zmatt> if you're coming from a uC background you'll probably find the am335x a more attractive processor in general since it's targeted at industrial applications and as a result has a whole bunch of peripherals more typical for uCs (its pwm subsystems for example come straight from TI's real-time control uCs)
  • [06:20:11] <tbr> also if you want to do micro-controller-ish stuff in addtion to Linux. The two PRU units on the BBB are kinda nice
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  • [06:21:08] <zmatt> while the broadcom is more of a smartphone processor... its strength lies in graphics, but that's also about all it has
  • [06:22:08] <zmatt> (the gpu is actually the main processor there, the ARM processor is an auxiliary)
  • [06:22:40] <tbr> it got better with the pi2, as now there are 4 armv7 cores instead of 1 armv6
  • [06:22:46] <tbr> but it's still meh
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  • [06:23:14] * tbr doesn't like the whole thing where the GPU needs to boot first using binary blobs
  • [06:23:16] <zmatt> if I'd touch an rpi1 at all it would be to play with the videocore... fuck arm11
  • [06:23:18] <zmatt> ;P
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  • [06:24:12] <mimetonbo> Okay thanks guys for your thoughts! @zmatt what paramater will be affected if I use the ethernet? Speed of transfer?
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  • [06:24:41] <mimetonbo> @zmatt the ethernet question was regarding RPI2 and BBB
  • [06:24:51] <mimetonbo> ethernet ports
  • [06:25:34] <zmatt> mimetonbo: that, plus the fact that usb sucks donkey balls and having your ethernet layered on top of that is just meh
  • [06:25:55] <zmatt> while the BBB actually has a fairly fancy ethernet controller
  • [06:26:08] <zmatt> (though unfortunately not a gigabit phy)
  • [06:26:42] <zmatt> note also that the BBB on-board storage (eMMC) while the rpi only boots from SD card (afaik this is still true with the rpi2 ?)
  • [06:27:30] <zmatt> the BBB can actually also directly ethernet-boot, which can be convenient when playing with kernels and/or bootloaders (though it's not trivial to get it working initially)
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  • [06:28:46] <mimetonbo_> Sorry got disconnected. How is the open source community comparing RPI2 and BBB?
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  • [06:29:15] <zmatt> no idea
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  • [06:42:25] <tbr> I'd say BBB is quality over quantity
  • [06:42:56] <tbr> less ugly hacks by random people who when try to sell it off as the ultimate solution
  • [06:43:10] <tbr> then...
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  • [06:54:09] <KotH> i'd say that most BBB users actually read the documentation
  • [06:54:39] <zmatt> including the TRM ? ;-)
  • [06:55:01] <KotH> anyone who met me, will at least know of its existance ;)
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  • [06:57:43] <zmatt> hmm, I think I've actually read, or at least substantially browsed, the whole thing... except I just superficially browsed CAN and USB (the former since I have no use for it currently, the latter because AAAAH MY EYES)
  • [07:03:06] <zmatt> not that I remember it all, but at least I usually know where I need to look
  • [07:12:43] <KotH> that's what i mean
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  • [07:12:57] <KotH> most rpi users dont do that
  • [07:13:04] <KotH> they just learn from youtube
  • [07:14:21] <mrpackethead> UUUUU TUBE
  • [07:14:25] <mrpackethead> hello chocolate troll
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  • [09:04:55] <TheoMurpse> So if I plug the BBB to my mac (I installed the serial and other driver first and rebooted) in and the heartbeat is blinking, but I can't connect to 192.168.7.2 like I'm supposed to. I used to be able to when I first got it months ago. Now I can't. Also, if I plug it into the router, the router doesn't see it requesting an IP (but the green and yellow enet lights are on). What could be happening?
  • [09:05:30] <TheoMurpse> When I say I can't connect to 192.168.7.2, that's if I plug it into my laptop via USB. I can't connect when it's plugged into the router, either.
  • [09:05:37] <TheoMurpse> This used to work, but doesn't seem to be anymore.
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  • [09:48:03] <ruben-ikmaak> The seeedstudio variant of the BBB seems close: http://ikmaak.nl/eenblog/2015/05/08/beaglebone-green-close-to-release/
  • [09:52:18] <ruben-ikmaak> seeed's own blogpost about it: http://www.seeedstudio.com/blog/2015/05/08/guessgiveaway-seeedhit-10th/
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  • [12:11:35] <zmatt> will it also avoid fucking up power management? :P
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  • [12:46:46] <Peanut> I'm running a BBB as a simple linux server, want to remove all the bonescript and cloud stuff. But when I install a new package with apt-get, systemd re-instates the startup and socket files again. Does anyone know where it reads that from?
  • [12:51:32] <zmatt> starting with a crap-free system might be easier than decrapping a system :P
  • [12:51:44] <zmatt> but did you apt-get purge the offending packages?
  • [12:52:08] <Peanut> cloud and bonescript are not in packages, alas
  • [12:52:22] <zmatt> then I'd definitely prefer to start with a clean system
  • [12:52:43] <zmatt> e.g. https://rcn-ee.net/rootfs/bb.org/testing/2015-03-08/console/
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  • [12:55:09] <Peanut> zmatt: tempting..
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  • [12:59:12] <mcan> hi, i add initrd to kernels eof and gives initrd address to kernel by parameter. but i get "initramfs unpacking failed junk in compressed archive" error on debug output.
  • [12:59:21] <mcan> do you have any idea?
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  • [13:51:08] <stt_michael> I don't think you can simply tag an initrd onto a kernel image, surely??
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  • [14:56:36] <jkridner> rcn-ee: I added the new compiler to /etc/environment, but buildbot isn't picking it up.
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  • [14:56:55] <jkridner> rcn-ee: I restarted buildbot in a shell that had the PATH set properly.
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  • [14:59:26] <jkridner> rcn-ee: just thought to restart the buildslave instead of the buildbot (master). will see if that fixes it.
  • [15:01:47] <rcn-ee> odd!
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  • [15:07:24] <rcn-ee> jkridner, on the cape *.dtbo side, i've been setting things up so we can use the gcc pre-processor and not use magic numbers in the dts/dtbos's.. https://github.com/RobertCNelson/bb.org-overlays/blob/master/src/arm/cape-CBB-Serial-r01.dts#L59
  • [15:08:52] <jkridner> rcn-ee: I think restarting the buildslave did it.
  • [15:09:37] <jkridner> rcn-ee: nice. Will you use the PREPROCESSOR to create some definitions of proper peripheral numbers per the hardware documentation?
  • [15:09:54] <jkridner> such that I2C2 is the correct I2C bus?
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  • [15:12:14] <rcn-ee> I guess we could hide the i2c2 behind a pre-proccessor too, the only cape that using i2c right that i've tested is the crypto cape and i2c2 was already define...
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  • [15:16:24] <jkridner> I was just espousing the general practice. I can't remember the exact instances where the issue came up.
  • [15:17:22] <rcn-ee> looks like the PATH is good now. ;) http://builds.beagleboard.org/builders/build-kernel/builds/23/steps/shell_1/logs/stdio
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  • [15:48:44] <azv4> anyone have some amazing code that handles keybed input from Fatar keybeds for BBB and calculates velocity, accepts some analog inputs for pitchwheel and volume, or know of an open project like this?
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  • [15:57:27] <_av500_> azv4: werent you the one to write that?
  • [15:57:52] <azv4> _av500_, ha! I might have to!
  • [15:58:01] <_av500_> so, get crackin'
  • [15:58:03] <azv4> I'm working on an LED matrix right now
  • [15:58:11] <_av500_> how boring :)
  • [15:58:20] <azv4> well its a good lesson in working with matrix
  • [15:58:53] <_av500_> the matrix!
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  • [17:04:03] <rcn-ee> jkridner, looks like it worked. ;) http://builds.beagleboard.org/linux/4.1/ea4764e19551fffe445d7e2f2094adcc04cdb2b1/
  • [17:04:18] <jkridner> I was just noticing that! :-)
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  • [18:11:23] <moto-timo> anybody building BBB debian images on Acer chromebook CB5-311 TK1?
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  • [19:24:17] <NewGuy> hi
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  • [19:34:18] <HyP3r> Hey all, I'm tring to flash my eMMC with Debian (Beagle Bone Black).
  • [19:34:28] * James_Johnson (~clayshoot@129.244.212.77) Quit (Ping timeout: 256 seconds)
  • [19:34:48] <HyP3r> But I allways have this error message: http://pastebin.com/KSysmBQF
  • [19:35:15] <HyP3r> I tried this: https://rcn-ee.com/rootfs/bb.org/testing/2015-05-04/console/BBB-eMMC-flasher-debian-8.0-console-armhf-2015-05-04-2gb.img.xz and this https://rcn-ee.com/rootfs/bb.org/release/2015-03-01/console/BBB-eMMC-flasher-debian-7.8-console-armhf-2015-03-01-2gb.img.xz
  • [19:35:25] <HyP3r> I following this tutorial http://derekmolloy.ie/write-a-new-image-to-the-beaglebone-black/
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  • [19:38:00] <vvu> HyP3r: try this ungureanuvladvictor.github.io/BBBlfs
  • [19:38:08] <vvu> maybe it works
  • [19:42:54] <HyP3r> vvu: I'll this thanks
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  • [20:02:33] <HyP3r> vvu: I can't compile this tool from you
  • [20:03:12] <HyP3r> http://pastebin.com/QYArALvX
  • [20:03:20] <HyP3r> I get this if I run ./autogen.sh
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  • [20:09:54] <bkeating> Anyone have thoughts on that $9 CHIP computer?
  • [20:10:08] <rcn-ee> HyP3r, even with the push button down?
  • [20:10:28] <rcn-ee> how exactly did you dd the file?
  • [20:10:33] <HyP3r> rcn-ee: yes sure. I'm pressing S2
  • [20:10:51] <HyP3r> http://pastebin.com/0K3sweNw
  • [20:11:04] <HyP3r> Like this (my acutal try without flasher)
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  • [20:11:21] <rcn-ee> odd..
  • [20:12:16] <HyP3r> Yes really odd
  • [20:12:38] <HyP3r> I'm now trying to startup with a normal MicroSD Image and copying on-the-fly to the mmc
  • [20:13:35] <HyP3r> I don't know if this good but like that: dd if=/dev/<sdcard> of=/dev/<eMMc>
  • [20:14:34] * Vasco is now known as Vasco_O
  • [20:17:03] <bkeating> Im pretty excited about it. It’s similiar, so I wonder if they will adopt things like BoneScript.
  • [20:17:25] <HyP3r> Weird, really weird, I also get this failure with a normal sd card image
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  • [20:30:05] <vvu> HyP3r: install pkg-config
  • [20:30:07] <gwilson_> Anyone here familiar with trying to use the ADC and the touch screen. It seems that as soon as I try to access the non-touch screen adc channels the touchscreen stops responding?
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  • [20:31:55] <_av500_> its the same hw unit, adc and touchscreen adc
  • [20:31:57] <_av500_> IIRC
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  • [20:33:24] <HyP3r> vvu: I installed pkg-config now I'm flashing the image
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  • [20:39:57] <gwilson_> Yeah, TS on 0-3, 4-7 for other things, 7 is used for something on the board.
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  • [20:47:24] <HyP3r> vvu: after this http://pastebin.com/6aQ9PeqE I started the board, now I get this:
  • [20:47:53] <HyP3r> http://pastebin.com/5aPk73Wn
  • [20:49:08] <vvu> which image are you using ?
  • [20:49:15] <vvu> seems that flashing was ok, image is the problem
  • [20:49:27] <HyP3r> microSD/Standalone: (console) (BeagleBone/BeagleBone Black)
  • [20:49:32] <HyP3r> https://rcn-ee.com/rootfs/bb.org/testing/2015-05-04/console/bone-debian-8.0-console-armhf-2015-05-04-2gb.img.xz
  • [20:49:39] <HyP3r> I validated the md5sum
  • [20:50:14] <vvu> you have 2gb eMMC ?
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  • [20:50:40] <HyP3r> I don't know
  • [20:50:55] <mrpackethead> https://www.kickstarter.com/projects/1598272670/chip-the-worlds-first-9-computer
  • [20:51:01] <mrpackethead> $9 computer?
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  • [20:51:20] <HyP3r> [ 3.052584] mmcblk0: mmc1:0001 MMC04G 3.65 GiB
  • [20:51:25] <vvu> HyP3r: try with this one http://debian.beagleboard.org/images/bone-debian-7.8-lxde-4gb-armhf-2015-03-01-4gb.img.xz
  • [20:51:35] <vvu> to really see if the image is the problem
  • [20:51:40] <HyP3r> I have a 3.65 GB image
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  • [21:05:45] <rcn-ee> HyP3r, https://paste.debian.net/173404/
  • [21:06:00] <rcn-ee> HyP3r, this was: BBB-eMMC-flasher-debian-8.0-console-armhf-2015-05-04-2gb.img
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  • [21:09:03] <HyP3r> rcn-ee: is this from you
  • [21:09:44] <HyP3r> I have two beagle bone black, and yes one is running totaly normal e.g. the flasher works and with the other device I get those failuers
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  • [21:10:33] <GenTooMan> <mrpackethead>: that's a board not a computer, it needs stuff to use. The beagle board comes with a cable and you can plug it in and use it right away.
  • [21:10:36] <rcn-ee> HyP3r, clear out the eMMC on that one..
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  • [21:11:54] <mrpackethead> GenTooMan: you can make that argument about any machine just about.
  • [21:12:05] <mrpackethead> the BB, needs to be pluged into something to use it.
  • [21:12:18] <HyP3r> rcn-ee: how?
  • [21:12:24] <mrpackethead> "degree of plugging" probalby comes into it.
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  • [21:12:39] <mrpackethead> I'm not defending it, or even know much about it.
  • [21:12:56] <mrpackethead> was just musing on the fact that this stuff is getting *SO* cheap
  • [21:13:09] <rcn-ee> HyP3r, remove power, push boot button, plug in power, remove finger from button... should boot off microsd..
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  • [21:14:32] <HyP3r> I know this, but all Images I tried (which are working on my second bbb) they all having the same failure
  • [21:16:24] <HyP3r> I think this bbb is broken
  • [21:18:51] <GenTooMan> mrpackethead: point! hehehe I'm not sure what it is they are "selling" it's too vague for me. Now adapteva I could figure out right away. I believe the price is artificial (at cost). The Rasberry Pi for example has a unique processor (litterally) anything else with more functionality costs a fair bit more. I'm not suspicious you get what you pay for just I suspect the people "inventing" a SoC on a board with IO connectors
  • [21:18:52] <GenTooMan> are 'being clever' on how they market the same idea (as the Pi). I prefer not to talk about the Pi stuff too political in nature.
  • [21:19:44] * sloanr (~user@hobbes.space.umn.edu) Quit (Ping timeout: 265 seconds)
  • [21:21:07] <mrpackethead> GenTooMan: a good degree of cynicalness is a good these days
  • [21:21:30] <mrpackethead> $9 becomes $50, before it becomes useful.
  • [21:21:31] <mrpackethead> :-)
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  • [21:23:51] <GenTooMan> That is the truth indeed. They also over hyped the software part too I noticed.
  • [21:26:08] <_av500_> its just an SoC with wifi on a PCB
  • [21:26:14] <_av500_> there is not much to it technically
  • [21:26:32] <_av500_> it runs linux, so SW is a gicen
  • [21:26:33] <_av500_> given
  • [21:26:54] <mrpackethead> but give them some points
  • [21:27:12] <mrpackethead> they have pushed the envelope a little further.
  • [21:27:18] * bostondriver (~mcambria@132.197.246.66) Quit (Ping timeout: 272 seconds)
  • [21:27:33] <_av500_> we sell a $19 phone
  • [21:27:39] <_av500_> saw it retail for $16
  • [21:27:50] <_av500_> so the bom cost must be below $10 as well for sure
  • [21:27:54] <ds2> $19 phone?
  • [21:27:58] <ds2> where do you sell it?
  • [21:27:58] <_av500_> ds2: dumb
  • [21:28:03] <_av500_> in africa
  • [21:28:08] <ds2> does it have a connector ?
  • [21:28:11] <_av500_> nope
  • [21:28:17] <_av500_> its a candybar
  • [21:28:29] <ds2> oh so dumber then old Nokia 5xxx's?
  • [21:28:33] <_av500_> as dumb
  • [21:28:42] <ds2> those have a connector
  • [21:28:49] <_av500_> well, it has usb to charge
  • [21:28:58] <_av500_> maybe does msc too., never bothered to check
  • [21:29:10] <ds2> trying to see if it can be used for sending sms from another board
  • [21:29:53] <_av500_> ah
  • [21:29:55] <_av500_> no idea
  • [21:29:57] <_av500_> probably not
  • [21:30:10] <_av500_> the SW is not nokia grade
  • [21:30:16] <ds2> 'k
  • [21:30:32] <ds2> $20 is cheaper then most modules
  • [21:30:59] <_av500_> ds2: its probably a Spreadtrum SoC
  • [21:31:09] <ds2> who makes those?
  • [21:31:19] <_av500_> china
  • [21:31:25] <ds2> oh
  • [21:31:29] <_av500_> Spreadtrum is the company
  • [21:31:34] <_av500_> they are eating away the low end
  • [21:31:43] <_av500_> now MTK will have to go up
  • [21:31:46] <_av500_> :)
  • [21:31:46] <ds2> must be more strip down then those TI OMAP reject phone SoC's
  • [21:32:07] <_av500_> http://www.archos.com/us/products/featurephones/archos_f18/index.html
  • [21:32:47] <ds2> can the case be removed?
  • [21:33:15] <ds2> link no good
  • [21:33:56] <_av500_> works here
  • [21:34:09] <_av500_> or enter "archos F18" into bing :)
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  • [21:37:30] <ds2> hmmmm
  • [21:37:43] <ds2> that looks useable balloon flights
  • [21:38:10] <ds2> prepaid sim, remove the keypad and screen then hook up the buttons to another controller
  • [21:38:19] <ds2> say a RPi
  • [21:38:27] <ds2> $40 disposeable payload
  • [21:38:47] <_av500_> well, get a $5 STM32 board
  • [21:39:10] <_av500_> or do you need openGL in the balloon?
  • [21:40:12] <wolf91> hi all, have you andy guide or tutorial how to run ti-rtos called sys/bios?:>
  • [21:40:20] <_av500_> heh
  • [21:40:21] <wolf91> *any
  • [21:40:28] <_av500_> why would you want that?
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  • [21:40:44] <_av500_> most if not all people here run Linux
  • [21:41:04] <wolf91> i have to run a rtos on embaded system to my graduate work:>>
  • [21:41:08] <_av500_> ah
  • [21:41:13] <_av500_> why sys/bios?
  • [21:41:54] <wolf91> and i wonder about sys/bios or qnx
  • [21:42:20] <ds2> running Linux would be nice
  • [21:42:41] <ds2> then do it with python or java
  • [21:43:08] <beest> java is known for its rtos robustness
  • [21:43:23] <ds2> they do make real time java!
  • [21:43:44] <wolf91> i thought that sys/bios should have better support
  • [21:43:57] <wolf91> a have to use c:>
  • [21:44:31] <wolf91> the which rtos you propose
  • [21:44:35] <wolf91> *then
  • [21:44:41] <wolf91> ?
  • [21:45:17] <_av500_> look at RTEMS
  • [21:45:28] <GenTooMan> maybe freeRTOS?
  • [21:45:38] <_av500_> not sure how much BBB support freeRTOS has
  • [21:45:46] <_av500_> but I know RTEMS is working on BBB
  • [21:45:54] <_av500_> they have 3 GSOC projects about it
  • [21:46:06] <ds2> maybe it isn't working and the GSoC projects are to fix it ;)
  • [21:46:12] <_av500_> sysbios is mostly a TI toy, there aint much support outside of TI
  • [21:46:22] <_av500_> ds2: well, he needs a graduate project anyway
  • [21:46:56] <_av500_> again, most ppl use the BBB with linux
  • [21:47:07] <_av500_> so the interest in running just a small rtos is small
  • [21:47:22] <_av500_> but the rtems guys are very interested in BBB
  • [21:48:30] <ds2> is this the project kblin was working on?
  • [21:48:44] <_av500_> kblin is samba mostly
  • [21:51:39] <wolf91> my graduate guide would like to use qnx, beacouse is a industrial OS, then i will be try with QNX, but i wanted have a second alternative path:>
  • [21:52:13] <_av500_> well, whatever he can support you best I would say
  • [21:52:23] <_av500_> if he is familiar with QNX, go for it
  • [21:52:53] <_av500_> if he can only say "QNX is industrial", look for another project
  • [21:54:34] <wolf91> he hasn't got any experience with qnx on embaded system, he used qnx only on pc...
  • [21:54:48] * kilroi is now known as kilroi_off
  • [21:55:11] <ds2> <GenTooMan> maybe freeRTOS?
  • [21:55:18] * kilroi_off is now known as kilroi
  • [21:55:39] <_av500_> wolf91: as a general kind of advice, pick a project that you are sure your supervisor is capable of supporting you
  • [21:55:54] <_av500_> its sad that it does not seem a given these days
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  • [21:57:02] <ds2> blah
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  • [22:00:32] <wolf91> i know that it is good advice, but... starting up rtos on BBB is only technical issue, after which he will be very usefull. i have to building a control system of inversed pendulum. Key issue of my graduade is implementation of pid controler and fuzzy logic controler
  • [22:01:01] * bfederau (~quassel@service.basyskom.com) Quit (Remote host closed the connection)
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  • [22:02:34] <wolf91> but i have to start and run up rtos on bbb:>
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  • [22:03:03] <ds2> if you think about it, the only thing that is RT on the BBB is the PRUSS
  • [22:03:20] <ds2> everything else doesn't have a narrowly bound timing comstraint
  • [22:03:27] <_av500_> ds2: it all depends on how R the T needs to be
  • [22:03:38] <_av500_> but thats an old discussion here and elsewhere
  • [22:03:48] <ds2> yes
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  • [22:03:55] <_av500_> wolf91: as said, not many ppl use rtos on BBB
  • [22:04:05] <_av500_> so if you are happy with qnx, use that
  • [22:04:10] * Redoktyabr (~Thunderbi@2606:a000:110e:8061:c852:9d96:d8c0:e219) has joined #beagle
  • [22:04:10] <_av500_> I have no idea about it
  • [22:04:16] <ds2> but that same argument can be used recursively to say plain old Linux is sufficient for a given R/T pair
  • [22:04:21] * webdaford (~daford@ool-457895c1.dyn.optonline.net) Quit (Quit: Leaving)
  • [22:05:42] <_av500_> no
  • [22:05:43] <_av500_> not any
  • [22:05:58] <_av500_> for some yes
  • [22:06:11] <_av500_> some RT needs PRU
  • [22:06:13] <_av500_> some does not
  • [22:06:30] <_av500_> write down your latency reqs first
  • [22:06:37] <NatP> Hello Using BB A6A with BBLCD7 A3 Cape, Trying to run Android 4.2.2, Screen is blank and get the following over serial any suggestions?init: sys_prop: permission denied uid:1003 name:service.bootanim.exit
  • [22:06:56] <_av500_> thats the only line you get?
  • [22:08:08] <NatP> No forums say that with that line androis is running but i get no graphics
  • [22:08:22] <_av500_> ah
  • [22:08:53] <NatP> can send more of serial term did not want to spam the chat
  • [22:09:01] <ds2> pastebin
  • [22:09:10] <_av500_> NatP: pastebin.com
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  • [22:10:44] <NatP> U-Boot 2013.01.01-00123-g2830d15 (Jun 26 2013 - 17:23:54) I2C: ready DRAM: 256 MiB WARNING: Caches not enabled NAND: No NAND device found!!! 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 *** Warning - readenv() failed, using default environment musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, H
  • [22:10:53] <ds2> pastebin.com
  • [22:12:17] <wolf91> latency request is as low as possible. it must be a hard RT, but i think that using RTOS on this project has only the task of rise valuse my work
  • [22:12:43] <ds2> but if it must be low as possible, the BBB cannot do Hard RT On anything but the PRUSS
  • [22:12:49] <wolf91> i know, that i can build my control system without rtos
  • [22:12:54] <NatP> http://pastebin.com/tN3Jp0UH
  • [22:13:14] <ds2> A8 access uses DDR which can incur L4 delays along with DDR refreshes
  • [22:13:28] <ds2> then you got the nice little cache (at least that is disableable)
  • [22:15:04] <wolf91> co miales na mysli mówiąc PRUSS
  • [22:15:13] <wolf91> What did you mean by saying PRUSS
  • [22:15:27] <ds2> i mean just that.
  • [22:16:42] <_av500_> the PRU
  • [22:16:57] <_av500_> https://www.google.com/search?q=am335x+pru
  • [22:16:58] <moto-timo> Programmable Reattime Unit
  • [22:17:15] <moto-timo> hard clocked 200 MHz subsystem
  • [22:17:28] <vvu> we need some good support docs for how to PRU and how to flash
  • [22:17:41] <_av500_> vvu: mabe a gsoc project?
  • [22:17:42] <moto-timo> and the limitations (resources)
  • [22:17:46] <moto-timo> lol
  • [22:18:02] <vvu> well gsoc wants code...maybe examples on how to do things
  • [22:18:06] <vvu> next year from now on :)
  • [22:19:19] <moto-timo> I wish the 28035 had a PRU instead of CLA
  • [22:19:21] <moto-timo> sigh
  • [22:21:11] <wolf91> ok, thanks for help and usefull advices. i will read about RTEMS. but the last recap the question , what would you choose RTOS for this project
  • [22:21:36] <_av500_> I dont know enough about RTOSs
  • [22:21:44] <moto-timo> FreeRTOS
  • [22:21:48] <_av500_> especially on BBB
  • [22:21:53] <_av500_> moto-timo: that has BBB support?
  • [22:21:58] <moto-timo> doubt it
  • [22:22:09] <moto-timo> but... it's somewhat easy to port
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  • [22:22:37] <vvu> they do not have any peripheral support
  • [22:22:47] <moto-timo> there's the rub
  • [22:22:53] <vvu> wolf91: qnx has bsp for bbb, check their website
  • [22:23:08] <vvu> wolf91: http://community.qnx.com/sf/wiki/do/viewPage/projects.bsp/wiki/TiAm335Beaglebone
  • [22:23:44] <_av500_> NatP: the error you gave is irrelevant
  • [22:23:49] <_av500_> google for it
  • [22:24:07] <_av500_> does your cape work with the stock SW?
  • [22:24:20] <NatP> yes it does work with angstrom
  • [22:25:14] <wolf91> thx a lot, i guess i will be a frequent visitor here:>
  • [22:25:23] <_av500_> NatP: and who made the android build?
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  • [22:25:49] <NatP> I downloaded the stock build from TI
  • [22:27:11] * __butch__ (~Adium@169.145.89.207) Quit (Quit: Leaving.)
  • [22:27:58] <NatP> and followed the instructions http://processors.wiki.ti.com/index.php/TI-Android-JB-4.2.2-DevKit-4.1.1_UserGuide
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  • [22:28:38] <_av500_> yes, but does the TI build support LCD capes?
  • [22:29:56] <NatP> in the usermanual they posted is says that the BBLCD7 A3 cape is suppored and is the default display
  • [22:30:55] * Redoktyabr (~Thunderbi@2606:a000:110e:8061:c852:9d96:d8c0:e219) Quit (Quit: Redoktyabr)
  • [22:31:13] <NatP> "This release is tested with BeagleBone LCD7, LCD4 and LCD3 capes. Beaglebone capes provide additional functionality to the BeagleBone."
  • [22:31:19] <GenTooMan> ds2: http://www.freertos.org/ free rtos
  • [22:33:02] <NatP> does a uEvn.txt var have to be set?
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  • [22:40:43] <wolf91> i can google a lot of example freertos for beaglebone but hard to find beaglebone black example, but night is still young:>
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  • [22:58:40] <GenTooMan> perhaps you should look up the beaglebone and beaglebone black and look at the differences between them?
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  • [23:07:04] <James_Johnson> wolf91 is there a reason xenomai won’t work for your application?
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  • [23:11:56] <wolf91> @James_Johnson this i first see xenomai, but i will read about it:>
  • [23:13:19] <James_Johnson> wolf91 real-time extensions for the linux kernel. I’m running a Xenomai-patched 3.8 kernel on BBBs currently.
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  • [23:22:27] <wolf91> if i faill with qnx xenomai is my second chose now:>
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