Hello Evan I've done it and designing a cape that manages the power by turning it off and on under external RTC control. I've found this works $ sudo su $ echo 0 > /sys/class/rtc/rtc0/wakealarm $ echo `date '+%s' -d '+ 1 minutes'` > /sys/class/rtc/rtc0/wakealarm $echo standby > /sys/power/state
shutsdown to 20mA then wakesup on deadline or any other event… On Fri, Mar 23, 2018 at 11:32 AM, Evan Griffith <griffith.e...@gmail.com> wrote: > > Hi, > > I am trying to get some clarity on the capabilities of the RTC on the > BBBW. Based on what I can see there is a nonbattery support powered RTC on > the chip. However in poking around online I hav ebeen unable to issue a > command that allows me to put the BBBW into a lower power state and then > wake up using the RTC. For context what I am hoping to do is sleep for > 10-20 minutes wakeup do something and then go back to sleep so that I can > minimize power usage in a battery powered application. Also I am running > the latest Debian stock OS with kernel 4.9.59-ti-rt-r74. > > thanks in advance for any help and let me know what info I should have > provided to get better help. > > -- > 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. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/beagleboard/eb7d932f-775a-4d00-935a-a7df981d040d%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/eb7d932f-775a-4d00-935a-a7df981d040d%40googlegroups.com?utm_medium=email&utm_source=footer> > . > 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAE_cRSfTP36rnA45xcx_5MKeED33xa1%2BmTAzAsJn-GK%3DDCw7Eg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
