I've read about capes that offer batteries to operate the BBB during power interruptions. I've read that there is a RTC in the SoC, but software does not support powering with a button cell. I see there is a PMIC onboard, as well as solder pads to allow attachment of a battery. I've also read that improperly powering-down the BBB can result in corrupt data/OS/eMMC/uSD.
My question: shouldn't it be possible to add just a tiny Li Ion battery using the solder pads, and with minor modifications (in userland?) sense when 5v power has been removed (USB client or 5v barrel jack), and then initiate an orderly, but immediate, shutdown? The small battery would be enough for the few seconds until full power down, preventing any memory corruption. This seems so simple I must be missing something. My goal is to be able to have my BBB project on a timer. Power will be applied/removed based on a rough schedule, an external RTC will provide correct time, and cron will be used to run what's needed. When power is removed, the system would be properly stopped. -- 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.
