from machine import Pin

clk = Pin(6, Pin.IN)
dt = Pin(7, Pin.IN)
sw = Pin(0, Pin.IN, Pin.PULL_UP)

current_value = [clk.value(), dt.value(), sw.value()]
while True:
    new_value = [clk.value(), dt.value(), sw.value()]
    if new_value != current_value:
        print(new_value)

    current_value = new_value