If anyone is interested, I wrote a simple Python-based systemd service to make use of the OLED screen and User button.
https://github.com/ppsx/cm3588-oled-screen
There's a small video: https://github.com/ppsx/cm3588-oled-screen/blob/master/oled-screen.mkv
https://github.com/ppsx/cm3588-oled-screen
There's a small video: https://github.com/ppsx/cm3588-oled-screen/blob/master/oled-screen.mkv