Re: [beagleboard] Beaglebone Black won't boot sometimes

2017-01-26 Thread Yiling Cao
If you still want to use the same pins, you can create an extra enable pin, after everything boots up into the kernel, use gpio_request and gpio_output to enable to the (EN pin) of power supply of your motor. In this way you prevent SYSBOOT affected and other voltage flows in, to affect power up

Re: [beagleboard] Beaglebone Black won't boot sometimes

2017-01-26 Thread Justin Pearson
On Thursday, January 26, 2017 at 12:34:54 PM UTC-8, RobertCNelson wrote: > > See Page 106/107 of: > > https://github.com/beagleboard/BeagleBone-Black/blob/master/BBB_SRM.pdf > Thanks Robert. For our viewers at home, the BBB uses pins lcd_data0 thru 15 as "SYSBOOT" pins that configure where the

Re: [beagleboard] Beaglebone Black won't boot sometimes

2017-01-26 Thread Robert Nelson
On Thu, Jan 26, 2017 at 2:29 PM, Justin Pearson wrote: > I'm using my Beaglebone Black to drive a DC motor and read a rotary encoder: > > https://github.com/justinpearson/Beaglebone-motor-from-command-line/blob/master/Images/lil-motor-setup.jpg > > Last night when I

[beagleboard] Beaglebone Black won't boot sometimes

2017-01-26 Thread Justin Pearson
I'm using my Beaglebone Black to drive a DC motor and read a rotary encoder: https://github.com/justinpearson/Beaglebone-motor-from-command-line/blob/master/Images/lil-motor-setup.jpg Last night when I rebooted my BBB, it shut down but didn't reboot: None of the 4 blue LEDs lit, although the