**** BEGIN LOGGING AT Mon Nov 28 03:00:01 2016 Nov 28 08:13:32 Hi, i'm using bone-debian-8.6-console-armhf-2016-10-06-2gb , how can I pass a command to kernel at boot ? (no grub installed) Nov 28 09:38:49 Can any1 please tell me how to connect the HC 05 Bluetooth module to the BBB? I am new to programming. Nov 28 09:44:02 https://donfuge.wordpress.com/2014/07/30/first-steps-with-the-hc-05-on-the-beaglebone-black/ if not already read.... Nov 28 13:34:55 is there some systemd After directive that could be used to ensure something is not launched before /dev/fb0 is available? Nov 28 13:36:47 I'm still stuck on my LCD7 clone with blank display (bbwhite 4.4.23 kernel , bone-debian-8.6-lxqt-4gb-armhf-2016-11-06-4gb) Nov 28 13:37:04 Any idea ? Nov 28 13:43:17 Hello I have a bunch of BBB Element 14 rev c and the problem is with the Ethernet Port for example When i start the BB the Ethernet port lights up even though its not connected Nov 28 14:30:14 Hey all. Where can I find out the reg/max current that can be drawn from the gpio pins? Nov 28 14:30:31 it's not in the System Reference Manual Nov 28 14:30:53 I have not yet figured out how to find it in the CPU data sheet or tech ref manual Nov 28 14:31:13 look in the TRM Nov 28 14:31:13 but those are *really* big so the info might be there Nov 28 14:31:14 Apparently the data sheet has electrical specs. Since I only have the TRF I can't verify. Nov 28 14:31:35 TRM. Urk. Oh. Well what do I know then. Nov 28 14:31:57 acuster: but usually, if you are drawing a lot of current from a io pin, you are doing it wrong Nov 28 14:32:29 are the GPIO pins directly connected to the CPU ball sockets? Nov 28 14:32:36 KotH: I' Nov 28 14:32:39 woops Nov 28 14:33:41 KotH: I'm trying to figure out how to replace a set of Arduinos with a BeagleBone Black. I'm not *doing* anything yet, merely trying to understand how I might go about things in the future. Nov 28 14:37:44 acuster: yes, they are directly connected (see the schematics) Nov 28 14:38:02 acuster: generally speaking, you can work the same way with an BBB as you do with an arduino, regarding GPIO Nov 28 14:38:31 acuster: there is one difference though: you have a lot of GPIO, and if you draw maximum current from all of them you might hit the maximum rating of the power pins Nov 28 14:38:52 aaaaaaaaa~. Nov 28 14:38:57 upsi. Nov 28 14:39:09 KotH: so far, that does not seem to be the case for me. I have a long way to go to figure out the 1-wire bus. Nov 28 14:39:10 acuster: acuster it is good practice to use a buffer if you are drawing more than 2-3mA from a pin Nov 28 14:39:33 so what's the *basic* rating for an output pin? like 10mA max? Nov 28 14:39:45 acuster: read the TRM Nov 28 14:40:16 * acuster returns to the 4000 page *introduction to power on the BB* Nov 28 14:40:47 :-) Nov 28 14:40:54 welcome to modern application processors Nov 28 14:41:06 but reading the "electrical specifications" would be enough Nov 28 14:41:17 there should be a short, one or two page table with all the data you need Nov 28 14:47:29 Koth. Nov 28 14:48:24 are you experienced with LCD capes ? Nov 28 14:49:40 acuster: more like 2mA Nov 28 14:49:44 its in the data sheet Nov 28 14:50:04 and the total from the chip is also given Nov 28 14:50:25 BBB GPIO pins are way less forgiving that the arduino ones Nov 28 14:50:39 or anyone who can help me on a blank LCD7 clone ? Nov 28 14:51:45 https://groups.google.com/forum/#!topic/beagleboard/cWGCEtg9syY Nov 28 14:52:20 https://groups.google.com/forum/#!topic/beaglebone/dosKmEE7xso Nov 28 15:23:19 As I understand the BBB, there are four alternative power sources: USB(client), Barrel Jack, Battery solder pins, P9_5/P9_6 pins. Is that all? Nov 28 15:24:08 and the PMIC is what decides, right? Nov 28 15:54:47 To power down safely, one can hold down the power button for like 5 seconds, right? Nov 28 15:55:06 the 'sys ref manual' says 'momentarily' but that does not seem to work. Nov 28 15:55:50 acuster, on later kernel's the power-button should work.. Nov 28 15:56:06 thanks Nov 28 15:56:10 by holding it for 5 seconds, it's auto-forcing it off, same as un-plugging.. Nov 28 15:58:09 oh, so the warnings about not unplugging in the SysRefManual, also apply to the 5s hold of the power button? Nov 28 15:59:02 no, un-plugging is still worse. ;) Nov 28 15:59:11 ok Nov 28 16:00:44 Hi Robert, did you receive my mail about lcd7 ? (I can imagine how busy you are...) Nov 28 16:01:43 yeah, i read it.. So is it an exact clone of the A2 (minus the buttons) or does it different (lcd pin wise) and just used the A2 eeprom? Nov 28 16:03:40 ( i also forgot my A3 lcd at home, so there's nothing i can really test at work today ) Nov 28 16:03:49 I think it is exact clone minus buttons, pwr enable and brightness control Nov 28 16:05:15 Which is weird, you said it worked previously, the A2 *.dtbo i had pulled from our old 3.8.13 branch and just updated the main dts port number changes.. Nov 28 16:05:30 i can debug pcb traces if needed Nov 28 16:06:18 is there perhaps a pin control that bone expect FROM cape to work ? Nov 28 16:06:59 Just the eeprom, then the *.dtbo that is loaded does everything.. Nov 28 16:07:02 what kernel worked before? Nov 28 16:07:30 hmmm let me boot it up end tell you.. Nov 28 16:10:02 3.2.33-psp26 Nov 28 16:10:19 oh god.. Nov 28 16:10:28 ancient ?? Nov 28 16:10:44 dark ages.. Nov 28 16:10:45 pre-dt Nov 28 16:11:09 all the cape detection was done in a big board file massive if/else/then structs... Nov 28 16:11:37 yes..... Nov 28 16:11:55 do they have a schemtic online? Nov 28 16:12:25 but assuming the hw is "quasi" identical what could be the difference ?? Nov 28 16:12:28 yes wait.... Nov 28 16:14:25 or better the beagle-to-lcd is custom with no schematics, lcd board is http://www.dema.net/pdf/ampi/AM-640480G2TNQW-T00H-A.pdf Nov 28 16:16:07 anyway on dmesg it is recognized by da8xx_lcdc as TFC_S9700RTWV35TR Nov 28 16:16:21 (that's the one used in LCD7 cape) Nov 28 16:17:24 Probably the custom eeprom is "faking" up the real 640x480 LCD i'm using Nov 28 16:17:40 but it worked :-((( Nov 28 16:19:17 so no schematic? Nov 28 16:22:10 my guess, it relied on something in v3.2.x-psp to turn it on. When moving to dt's (3.8/4.1/4.4/4.9) this got lost for this particular clone model.. Nov 28 16:23:39 Only the pdf above, if you need I can debug easily pin to pin from beaglebone to lcd module and write down their matching Nov 28 16:26:36 Tomorrow I'll compare pin to pin how my lcd module and the original TFC_S9700RTWV35TR interface to bone and search for any difference Nov 28 16:30:00 what about the "display-timings" section at the end of BB-BONE-LCD7-01-00A2.dts ?? Nov 28 16:30:53 or the "panel" section ? could something prevent by lighting-up ? Nov 28 16:31:00 well those match the glass on the A2.. you probally have different glass, but they are pretty fudgable.. Nov 28 16:31:45 pwm pretty much enables the screen on the A2/A3.. so you'll need to find out what pin controls the backlight (on/off control) Nov 28 16:32:08 backlight is already on Nov 28 16:34:29 the display is completely black, so nothing like strange things, rows , spots etc. simply black screen Nov 28 16:37:40 got to go, tomorrow I'll produce something useful (i hope) Nov 28 16:38:17 thank you Nov 28 23:21:40 can you use bbb with win 10? Nov 29 01:11:21 how would you connect two beaglebone green's to one host Nov 29 02:44:49 hello Nov 29 02:45:45 I have a question of bluetooth model Nov 29 02:45:48 on beaglebone Nov 29 02:45:57 is there any example ? **** ENDING LOGGING AT Tue Nov 29 03:00:00 2016