from machine import Pin
from utime import sleep

button_1 = Pin(15, Pin.IN, Pin.PULL_UP)
led_1 = Pin(14, Pin.OUT, Pin.PULL_UP)

button_state = 0
def is_button_pressed(pin):
    global button_state
    button_state = button_state << 1 | pin.value()
    button_state = button_state & 0xFFFF
    return button_state == 0x8000

while True:
    if is_button_pressed(button_1):
        led_1.toggle()
        sleep(0.5)