GamePadShift – Scan buttons for presses through a shift register

class gamepadshift.GamePadShift(clock, data, latch)

Initializes button scanning routines.

The clock, data and latch parameters are DigitalInOut objects connected to the shift register controlling the buttons.

They button presses are accumulated, until the get_pressed method is called, at which point the button state is cleared, and the new button presses start to be recorded.

Only one gamepad (gamepad.GamePad or gamepadshift.GamePadShift) may be used at a time.

get_pressed()

Get the status of buttons pressed since the last call and clear it.

Returns an 8-bit number, with bits that correspond to buttons, which have been pressed (or held down) since the last call to this function set to 1, and the remaining bits set to 0. Then it clears the button state, so that new button presses (or buttons that are held down) can be recorded for the next call.

deinit()

Disable button scanning.