Request for nutrition assistance!

Greetings to the developers! I made my project on my car in which I use vim2 as the main device!

I connected my vim2 to the side of the car network through a DC-DC voltage converter, so vlm 2 is powered from 5 volts constantly! I am interested in my vim 2 falling asleep when I leave my car, and so that vim 2 wakes up at my appearance and any action with intentions to use the car. I give the essence is clear!
I can implement at the level of a third-party device any signal I need to indicate the events described above.
The problem is, how exactly does waking up and sleeping on a signal in khadas vim2 itself?
Where to connect?
How and where to register it in android?

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