**** BEGIN LOGGING AT Sun Dec 28 02:59:59 2014 Dec 28 08:57:26 hi, ok, I messured a nice square ware going to gpio 48 between 0-3.3v Dec 28 08:57:38 pulses are 50ms at about 50% duty cycle Dec 28 08:58:04 yet, I can't notice the pulses in /sys/class/gpio/gpio48/value Dec 28 08:58:13 I use /sys/class/gpio/gpio48/edge Dec 28 08:58:18 I use /sys/class/gpio/gpio48/edge = both Dec 28 08:59:56 my python really does : gpio_fd = open(os.path.join(gpio_path, 'value'), 'r') Dec 28 09:00:09 po = select.epoll() Dec 28 09:00:16 po.register(gpio_fd, select.EPOLLIN | select.EPOLLET) Dec 28 09:00:30 events = po.poll( WATERFLOW_TIMEOUT ) Dec 28 09:00:45 yet the line after this is not called. Dec 28 09:00:51 this used to work Dec 28 10:51:25 hello Dec 28 10:51:37 any one using qt in bbb Dec 28 10:52:04 any hope Dec 28 10:54:40 hello Dec 28 10:55:07 any one using qt in bbb Dec 28 10:55:20 need some help Dec 28 10:55:40 hello friends Dec 28 10:57:27 hi Dec 28 10:57:49 hello mag Dec 28 10:58:11 hi denix Dec 28 10:58:55 hi bahar Dec 28 11:03:08 hello Dec 28 11:03:22 http://www.catb.org/esr/faqs/smart-questions.html Dec 28 11:04:11 hello Dec 28 11:05:24 http://www.catb.org/esr/faqs/smart-questions.html Dec 28 14:59:16 anyone ever power the BBB from the external power connectors (TP5-TP8) Dec 28 15:04:16 does anyone know of the PMIC can be "reset" if it has shutdown due to over-current detection? Dec 28 15:15:55 i think but am not sure but i think it resets itself after a certain amount of time but dont quote me Dec 28 15:17:30 doesn't seem to Dec 28 15:17:51 all that happens on my two BBB units is a slight flicker occasionally Dec 28 15:17:56 google the data sheet for it that will tell you :) Dec 28 15:18:09 i've been reading the SRM for a couple hours now Dec 28 15:18:18 haven't found anything about a reset yet Dec 28 15:18:44 i have had a BBW for 18 months and have connected countless circuits Dec 28 15:18:48 hmmm most i have ever used usually reset if an over current or somesuch is detectd Dec 28 15:19:00 now with two BBBs in the past month, the same thing happens Dec 28 15:19:20 and with the first one, there was nothing even connected to the headers Dec 28 15:19:26 very suspicious Dec 28 15:20:00 it's like these PMICs on the RevC units are freaking otu Dec 28 15:20:02 *out* Dec 28 15:20:39 hmm whats the part~ Dec 28 15:20:45 #^ Dec 28 15:21:54 the PMIC? Dec 28 15:22:26 TPS65217C I think Dec 28 15:22:34 yup Dec 28 15:23:21 just browsing the docs :) Dec 28 15:24:00 me too Dec 28 15:24:34 primarily the SRM Dec 28 15:28:37 "The power LED is a blue LED that will turn on once the TPS65217C has finished the Dec 28 15:28:37 power up procedure. If you ever see the LED flash once, that means that the TPS65217C Dec 28 15:28:37 started the process and encountered an issue that caused it to shut down." Dec 28 15:28:45 yup, pretty much...lol Dec 28 15:33:15 looking at the docs it seems you can spak to it over I2c Dec 28 15:33:25 i2c0 Dec 28 15:33:55 maybe hook up the U2C and see what it says Dec 28 15:34:02 I2C^ Dec 28 15:34:09 the "internal" i2c port Dec 28 15:35:16 Hi not able to give the beaglebone black enough power over usb from laptop to act as usb host and have just bought a 2.5A 5V supply for the board Dec 28 15:35:38 boy, make SURE that the power supply is 4.75-5.25v Dec 28 15:36:04 mine was 5.4v, even though i bought it from Adafruit...right from their BBB page Dec 28 15:36:06 my question is: is it safe to connect the beaglebone to laptop over usb and connect the supply? Dec 28 15:36:11 yes Dec 28 15:36:21 it will default to the 5vdc port Dec 28 15:36:30 the USB won't be supplying power Dec 28 15:36:50 you won't need it, given the 2.5a capacity of the external power Dec 28 15:37:04 ok that's great! so not at risk of bricking either the laptop or the BBB Dec 28 15:37:17 well, the laptop is irrelevant to the BBB of course Dec 28 15:37:27 and i don't see how you would "brick" the BBB Dec 28 15:37:42 s/brick/fry/ I guess Dec 28 15:37:50 oh, well that's different Dec 28 15:37:56 bricking means non-responsive Dec 28 15:38:01 frying means DEAD Dec 28 15:38:13 as in, the magic smoke comes out Dec 28 15:38:18 I imagined if the 5V rails were directly connected internally then smoke might emerge from one or other device! Dec 28 15:38:23 no Dec 28 15:38:40 if you think about it, not everyone will have their BBB connected to Ethernet Dec 28 15:38:57 anyway sounds like the board is a smart design thanks for the advice... Dec 28 15:38:59 so they need to be able to talk to it via SSH-over-USB Dec 28 15:39:06 it's the PMIC Dec 28 15:39:20 except that it seems to be a weak link Dec 28 15:39:43 so just be careful and make sure you verify the voltage you're applying to it Dec 28 15:41:34 PMIC == Power Management Integrated Circuit, btw Dec 28 15:43:56 H-H-H, how would a person talk to the thing on the i2c0 bus, when it won't power-up? Dec 28 15:45:32 thats a good question and one i dont have the answer to as its a little over my head im just trying to be helpfull :) Dec 28 15:46:13 right, understood Dec 28 15:46:27 it was more of a rhetorical question, lol Dec 28 15:46:57 although i belive that I2C0 is available on the gpio headers although i might be wrong Dec 28 15:58:45 I don't see i2c0 denoted on the default header pin diagram. So it's probably multiplexed and may need to be exposed Dec 28 15:58:48 still looking Dec 28 16:08:41 nope...doesn't seem to even be available via headers Dec 28 16:40:13 it isn't Dec 28 16:51:08 beest, right. have definitely confirmed that Dec 28 16:51:27 now to figure out how one might be able to "reset" the PMIC Dec 28 20:52:51 booting a beaglebone white with a beagleboneblack .dtb ... will it just fail to work? likely to do damage? Dec 29 02:01:34 Hi all, I'm a BeagleBoard newbie and had a question regarding the Sevo code at "http://beagleboard.org/Support/BoneScript/ServoMotor/". It runs fine "servo moves" when I first executed from browser, but it doesn't move the "servo" when trying to executed it again. I've tried closing and reloading the browser, refreshing the page, disconnecting the sevo, etc. The only way to execute the servo code "move" again is to reboot beaglebon Dec 29 02:02:54 The console log displays displays Duty Cycle % on subsequent runs bu tit doesn't move the servo.. Dec 29 02:03:15 .. but it doesn't move the server... Dec 29 02:06:56 I can run the same servo code from Cloud9 repeatedly without issues. **** ENDING LOGGING AT Mon Dec 29 02:59:58 2014