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Deactivate Linux Sleep/freeze/hibernate state without systemctl

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I have a system with a very specific Linux compilation that runs on ARM CPUs. It lacks almost all services (systemctl included) and generally-included software (apt-get, snap, etc.) and it is not connected to the web, so I cannot download anything (I can although send files through scp).The system can be accessed through ssh which is managed by dropbear (or alternatively I can access the system through UART). I work on the system by doing ssh.

The problem is that every morning I cannot access it in any way, even though every led is blinking green. It is like the system went into freeze/hibernation/sleep/dunno and all I/Os are deactivated.If I restart the system, everything starts working again. The thing is I cannot be present every morning to flip the switch, so is there a way I can wake up the system or not make it go to sleep?I need something I can do through vim, like edit some configuration files, etc. (I have root access).

Thanks to everyone,

Eventine


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