Hello there Michael, I have just tested my BeagleBone Black. I have connected the power through USB + battery. Then I disconnected the USB and left the BeagleBone Black on the battery. It havent shutdown after a minute or anything. I am using the console Debian image.
W dniu piątek, 17 października 2014 07:25:54 UTC+2 użytkownik Michel Gerin napisał: > > Hello David, > > Yes you are right. If I cannot solve this shutdown problem it's probably > the only solution. > > But it's frustrating when you think that the BeagleBone Black has its own > battery charger and own UPS that can only run during 60 seconds because of > this self shutdown problem ! > Why does it work correctly on a BBB running a VoIP PBX (probably running > with Ubuntu) and not with a Debian or Angström distribution ? > I would prefer Debian or Angström built for BeagleBone Black distribution > not to be able to make a self shutdown and let this possibility to the > user. > > An external backup UPS draws also additional current when running. I > wanted to keep power consumption as low as possible. Moreover, I don't need > 5V from the BBB when running under UPS mode. > > If a know that a SW solution exists, I won't give up so easily. :-) > > Kind regards > > Michel. > > 2014-10-17 0:13 GMT+02:00 David Funk <dwf...@gmail.com <javascript:>>: > >> Maybe use a battery backup UPS to run your 5 volt power supply to the BBB? >> >> >> >> -david >> >> On Thu, Oct 16, 2014 at 12:49 PM, Michel Gerin <mich....@gmail.com >> <javascript:>> wrote: >> >>> Hello Robert, >>> >>> Thank you spending your time to help me. >>> >>> First of all, sorry if I didn't explain things correctly. I think there >>> is a misunderstanding (I am French speaking) . >>> >>> I don't want BeagleBone to perform a shutdown during power outage. I >>> want BBB running continuously like my VoIP PBX also based on BeagleBone >>> Black. But I think, that in this later case, the developper used >>> Ubuntu (neither Debian nor Angström). As these OS are official BBB OS, I >>> prefer using them for my application. I am electrician, I don't really want >>> to spend too much time on SW bugs as I am not skilled for that task. >>> >>> One word perhaps about the application: it is very simple. I must >>> monitor mains power supply in different locations and have to log power >>> outage events on a file with time stamps. I have also to log grid >>> switching events ... The specialized 230V AC monitoring system has no >>> Ethernet connection but can be associated with BBB GPIO's. So that log file >>> could be downloaded when power outage is over. >>> >>> The problem is that, even with battery plugged in, the BeagleBone Black >>> perform a self shutdown within 60 seconds after mains power off (5V DC >>> power supply)... >>> >>> Hope my explanation is now better. >>> >>> Kind regards >>> >>> Michel. >>> >>> >>> >>> 2014-10-16 19:04 GMT+02:00 Robert Nelson <robert...@gmail.com >>> <javascript:>>: >>> >>>> On Thu, Oct 16, 2014 at 12:00 PM, Michel Gerin <mich....@gmail.com >>>> <javascript:>> wrote: >>>> > Thank you for your quick reply. >>>> > >>>> > you wrote: >>>> > >>>> >> >>>> >> No shutdown is a function of the SW.The SRM covers the hardware. >>>> > >>>> > >>>> > OK, than I suppose that somewhere in the whole Debian package, a >>>> routine >>>> > is permanentely checking (polling) if 5V DC power supply is still >>>> "ON". >>>> > When it is not the case an event is fired in order to start a clean >>>> > shutdown procedure? Am I correct ? Does this happen via the I²C bus ? >>>> Does >>>> > this routine makes a polling to the TPS65217C PMIC ? >>>> >>>> Nope you need to tell it.. >>>> >>>> Either via: "sudo halt" or.. setup a pin/interrupt to trigger systemd >>>> to shutdown the system.. >>>> >>>> Regards, >>>> >>>> -- >>>> Robert Nelson >>>> http://www.rcn-ee.com/ >>> >>> >> >> -- >> 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 beagleboard...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
