**** BEGIN LOGGING AT Tue Dec 22 02:59:58 2015 Dec 22 09:30:10 what is the difference between beaglebone white and blck ? Dec 22 09:30:28 black* Dec 22 09:31:11 ? Dec 22 09:33:51 Hi, I'm using a beaglebone black, originally it had a devian operating system but I've changed it for an angtrom distribution. I'm having some problems saving data in sd card on the other hand systemd-journal has a constantly high CPU percentage. Is it possible that the change in distribution causes problems? Dec 22 09:45:09 I am looking for a used beagle to purchase. Anyone offering? Dec 22 09:48:26 henry__: ebay not delivering? Dec 22 10:08:58 I don't want to deal with ebay and their ridiculous fees. Anyone willing to sell me a used Beagle? Dec 22 14:01:53 Does anybody know the operating temperature of the Beaglebone Black Dec 22 14:02:10 the SRM should mention that Dec 22 14:02:56 I have looked everywhere and cannot find any manufacture lit stating an op temp but just many opinions in forums Dec 22 14:07:43 Most of our equipment has to be good from 0-50 deg C and from what I have read seems like I should be fine but would prefer to see an actual manufacture spec stating this Dec 22 14:11:02 Trinity_: are you building a new board based on the BBB design? Dec 22 14:11:12 Trinity_: or just using a stock BBB? Dec 22 14:11:27 stock BBB using for industrial control Dec 22 14:13:15 in that case, I think you're fine, as the minimum operating temp I've seen is 0C to 70C depending on what components are on the board Dec 22 14:14:21 Ok. I appreciate the advice and nothing left but to try/test it Dec 22 14:15:58 note that BBB clones may have a different operating temp range Dec 22 14:16:28 yes, it is best to ask the supplier/manufacturer for the /actual/ range Dec 22 14:17:10 IIRC one of the limiting components wrt temperature range is the HDMI framer, possibly also the eMMC Dec 22 14:33:38 on the x15 (and am57xx in general) is the internal DSP on a PCI bus or another (memory mapped?) type of bus? (I'm looking thru the docs on am57xx parts now, but thought I'd ask, too) Dec 22 14:35:24 oh, hm, seems the DSP is on the L3_MAIN interconnect, not PCI Dec 22 14:35:39 PCI devices also would connect to L3_MAIN Dec 22 15:11:25 what's this blockchain business with LF all about? Dec 22 15:16:23 just check which corporate is really paying for it, that will lead to answers Dec 22 15:16:37 apparently a lot of them Dec 22 15:29:35 it seems LF is the new dumping ground for any open source project Dec 22 15:29:38 its the new apache Dec 22 17:02:02 hey :) Dec 22 17:02:24 does anyone know what graphics / video the bbb is using? is it one of those mali gpu's? Dec 22 17:12:13 chillfan: sgx Dec 22 17:12:16 5something Dec 22 17:14:31 I presume the BUILD_BUG_ON_ZERO((perms & 2) incompatible pointer type warning is ignorable? Don't like warnings; just want to be sure. Dec 22 17:31:09 av500: alright cheers Dec 22 18:34:20 Anyone know off the top of their head if/where I would be able to find a through-hole variant of this? http://www.digikey.com/product-detail/en/0901560144/WM8019-ND/760735 Dec 22 18:54:39 abferm: presumably you mean the female version of.. http://www.digikey.com/product-detail/en/0901361104/WM8215-ND/760928 Dec 22 18:55:23 if its a molex or samtec or similar header, their online catalogues are pretty good tbh Dec 22 19:00:05 abferm.. my inkling though, is that there probably isn't one .. for that kinda connector Dec 22 19:01:22 especially since that's a housing, with crimp terminals for wires :) Dec 22 19:16:31 veremit: yeah, I'm not having much luck. I could go with a plain female header, but I want to utilize the key on the shrouded connector on an existing board. Dec 22 19:18:15 it looks a bit like the old audio connector on cd-rom drives :) Dec 22 19:20:00 abferm .. its uncommon to have a latch on a pcb header .. but I get your point about location key. I think you're gonna have to find an alternative though .. and/or make up an interface cable if you can't change one/other Dec 22 19:22:16 I'm trying to replace a poorly made adapter cable with a pcb adapter. Dec 22 19:23:28 ah. Good luck :) Dec 22 20:02:34 veremit: I'm starting to think about a right angle header and use a pcb "finger" as the key Dec 22 21:18:49 abferm .. there are some other tricks, like blocking an entry and breakin a pin off Dec 22 21:21:05 The Floppy Cable Solution. Dec 22 22:00:55 Hi, any news on x15? Dec 22 22:03:03 nope.. failed FCC last news Dec 22 22:03:14 try mid-late Jan. Dec 22 22:38:17 Hey! I was wondering if anyone had any good examples on interfacing with the GPIOs of the Beaglebone using the PRU? Dec 22 22:44:32 any gpio or the PRU gpios? Dec 22 22:51:19 has anyone used the bbb to flash SPI? Dec 22 22:51:36 I'm just wondering what I might need to recover a bad bios flash on a laptop i have Dec 22 22:52:18 chillfan, the libreboot guys use bbb's: http://libreboot.org/docs/install/x200_external.html Dec 22 22:53:31 rcn-ee: yeah that's partly where i got the idea :) Dec 22 22:53:45 wondering what clips I might need to use Dec 22 23:10:28 I am currently collecting ADC data with the PRU and storing it in the shared memory with the ARM chip. I then read the data using the ARM chip and write the values to a file. At high capture rates the buffer fills up. Is my best option to trigger interrupts using the PRU when the buffer is getting full to cause the linux process to read values out? Dec 22 23:11:00 I think the issue is in scheduling - if the linux process isn't scheduled often enough the buffer becomes full Dec 22 23:21:25 process? Dec 22 23:21:30 what process? Dec 22 23:21:50 what kind of datarates? Dec 22 23:30:18 ds2 a process being some program i wrote. sampling at 100k or 200k samples per second Dec 22 23:30:35 write a proper driver Dec 22 23:30:43 you should be able to do more then that easily Dec 22 23:31:02 10-20Msps Dec 22 23:31:09 do NOT use userland. Dec 22 23:31:29 ds2, thats what i figured would be the answer Dec 22 23:31:43 ds2, do you know if such a library exists for the BBB or should i write it from scratch? Dec 22 23:39:02 library? Dec 22 23:39:07 what do you mean? Dec 22 23:39:29 for 100K-200K range, you might be able to use the RPMSG -maybe ever 100 samples a message Dec 22 23:39:46 otherwise, just do your own protocol - 2 ping pong buffers Dec 22 23:49:47 ds2, sounds good. thanks! Dec 22 23:50:58 alright looks like I can reflash the bad chip, is there a pinout handy for the BBB? Dec 23 00:03:20 chillfan: just google beaglebone black pinout, there are many Dec 23 00:05:21 cheers Dec 23 01:57:25 does anyone know of an example driver for handling interrupts from the PRU? **** ENDING LOGGING AT Wed Dec 23 02:59:58 2015