This overlay supplies all of the functionality for Picade HAT using built-in drivers on the Raspberry Pi.
It will:
- Bind the 14 buttons to linux keycodes from a virtual keyboard input
- Optionally: bind the power button to KEY_POWER to trigger a shutdown
- Optionally: assert BCM4 upon shutdown, to cut the power from the HAT to the Pi
- Optionally: set up i2s audio to work with Picade HAT
- Optionally: re-route the Pi's act LED and give you control over the trigger function
See picade.txt for full documentation.
You can run make and sudo make install to install picade.dtbo in your /boot/overlays/ folder.
Once done, edit /boot/config.txt and add dtoverlay=picade to the bottom.
See picade.txt for the various options you can supply to this command.