Re: Integartion with systemd and rtcwake

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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