The board is powered off using the shutdown -h now command.  It gets woken 
up by pulling down the power button line for 250 mS.
 
Jon

On Thursday, October 24, 2013 4:16:07 PM UTC-4, Gerald wrote:

> How long is this pulse you are using to power off the board?
>
> Gerald
>
>
>
> On Thu, Oct 24, 2013 at 2:48 PM, <[email protected] <javascript:>> wrote:
>
>> I have a BBB that will not reliably boot after shutdown -h now is issued. 
>>   In order to minimize power consumption between periodic events the unit 
>> is shutdown and then restarted by an external clock that momentarily pulls 
>> down the power button.  Approximately 1/20 times the unit will turn the 
>> power LED on boot never start the boot process where the LEDS are 
>> flashing.  The unit will not respond to either Power or reset buttons in 
>> this mode.
>>
>> In this case, the power supply is always on
>>
>> Thank you for you assistance,
>> Jon
>> .   
>>
>> -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
>> You received this message because you are subscribed to the Google Groups 
>> "BeagleBoard" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to [email protected] <javascript:>.
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>
>

-- 
For more options, visit http://beagleboard.org/discuss
--- 
You received this message because you are subscribed to the Google Groups 
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.

Reply via email to