There is a battery input on the pmmc that you can use, it is for a single cell 3.7v Li battery. or more in parallel if you need more holding time. one battery will give you plenty of time for a orderly shutdown http://www.ti.com/lit/ds/slvsb64g/slvsb64g.pdf ref page 2 of the BBB schematic upper right part of page There is a battery cape that seems to do what you want http://andicelabs.com/beaglebone-powercape/ this board does not use the pmic power pins
On 7/14/2015 6:50 AM, Marlon Cesar Pilonetto wrote: > Hello, > > I use the Beagle Bone Black in a project, it is mains powered with a > source we developed and has a lead-acid battery (not appropriate) for > backup when the power does not supply energy that would be only in the > event of a fall or a shutdown scheduled for maintenance, so the system > does not hang up. However when we detect a power outage the backup > battery kicks in and the system correctly turn off after a period thus > preventing the system files get corrupted. > > Ideally enjoy the Beagle Bone Black system to feed her through a cell > Li + of 4.2V, I need is to find out how I can make the detection of > power outages and turn this battery after about 10 minutes, just as we > do with the lead battery, it all via firmware. > > I hope too that someone can help me with this. > -- > 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 > <mailto:beagleboard+unsubscr...@googlegroups.com>. > 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.
