LIKO-12 has got 2 players controllers, each with 7 buttons:

Default Controllers Keysmap:
- Player 1: Left,Right,Up,Down, Z,X, C.
- Player 2: S,F,E,D, Tab,Q, W.
Note: The keymap can be changed by the user via the keymap
program.
Checks if a gamepad button is down.
Syntax:
bool = btn(id,p)
Arguments:
- (Number): The button number to check, [1,7].
- p (1): The player number, 1 or 2.
Returns:
- bool (Boolean): True if the gamepad button is down, false if not.