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 <[email protected]> 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 <[email protected]>: > >> On Thu, Oct 16, 2014 at 12:00 PM, Michel Gerin <[email protected]> >> 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
