from LED_switch_matrix import LEDSwitchMatrix
from time import sleep

def switches_callback(matrix):
    if matrix.switch_changed:
        matrix.set_all_LEDs(matrix.switches_state)          
        # print("Current: {}\tAdded: {}\tRemoved: {}".format( \
        #     matrix.current, matrix.pressed, matrix.released))
        for k in matrix.released:
            print(f"Released: {k}")
        for k in matrix.pressed:
            print(f"Pressed:  {k}")

lsm = LEDSwitchMatrix(freq=2000, out_base=0, in_base=8, sideset_base=18)
lsm.callback = switches_callback

while True:
    lsm.setLED(31, True)
    sleep(1)
    lsm.setLED(31, False)
    sleep(1)