Mon, Apr 10, 2023 at 07:08:29AM -0700, VDRU VDRU wrote:
Why don't you make life easy and just add a $5-10 rtc module and be
done with it?
Based on this discussion
https://forums.raspberrypi.com/viewtopic.php?t=210662 one would need
more than that. "Shutting down" the Raspberry Pi will actually reboot it
into the bootloader in a special mode that will cause the firwmare to
wait for a "power on" GPIO signal.
The only way to actually power off the Raspberry Pi is to cut the power
supply. At https://github.com/bablokb/pi-wake-on-rtc you can find a
schematic diagram and board layout of such a solution (incompatible with
rtcwake). I don't think that the hardware part can be done by extending
the Pi TV HAT with some 3D soldering, like I did to mount an IR
receiver.
I was actually looking feedback for the systemd integration, which is
not specific to the Raspberry Pi.
Marko
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