I can confirm that power consumption increases after 'shutdown -h' command completes on the rev C. I'm attaching plots showing idle current consumption at idle, but I don't have plots for consumption after power off. Our work around was to cut power using our voltage regulator circuit. This worked well for us because our system already had a separate microcontroller.
On Monday, September 29, 2014 3:57:21 AM UTC-4, Seth wrote: > > I measured the current (DC jack powered) my BBB (rev C, kernel v3.16.3) > draws at idle: ~200mA. Then I issued a *poweroff* (or *shutdown now*) > command, and after the system had halted I measured current draw at ~240mA. > This is a bare BBB with nothing attached (besides the serial debug cable). > This isn't what I expected to happen. > > Holding the power button for 8 seconds does power off the BBB (<1mA). > However, I find the method of "hold for >=8 seconds, but not >=8.5 seconds > or else it power cycles" to be kind of user-unfriendly. Is there a way to > programmatically put the BBB into the same state as holding the power > button for 8 seconds? > > I've done a bit of searching and it looks like there were problems (from > earlier in the year) with the PMIC/RTC and bringing the board down to a > low-power state from software alone. I just wanted to ask if those problems > had been resolved. > > I tried doing a *echo mem > /sys/power/state* which returned Invalid > argument. Note that I'd like to try both methods: software command the BBB > to power down as if the power button had been held for 8 seconds, as well > as a memory-saving/restoring state. > > > -- 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.
