import time
from machine import Pin

button = Pin(15, Pin.IN, Pin.PULL_UP)

last_state = button.value()
count = 0

while True:
    current_state = button.value()

    if current_state != last_state:
        time.sleep_ms(20)
        current_state = button.value()

        if current_state != last_state:
            last_state = current_state
            count += 1
            print("count =", count)