We are designing a device to reside in a vehicle and be powered through the car battery. We are attempting to reduce the power consumption as much as possible when the device is not in use. I have read in other forum topics that the command
sudo rtcwake -m mem -s 60 should put the nano into a low power mode for 60 seconds. However, when running this command the device turns off for roughly 1 second and immediately comes back up. This is the output from the system:
$ sudo rtcwake -m mem -s 60 rtcwake: assuming RTC uses UTC... rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Nov 17 20:27:01 2020 rtcwake: write error
Any information on why this command doesn’t work as described in the other forum post would be very helpful. I can provide any other supplemental information needed.