from machine import Pin
from time import sleep

led = Pin(12, Pin.OUT)
button = Pin(26, Pin.IN, Pin.PULL_UP)

led.value(0)

last_state = 1  # button not pressed

while True:
    current_state = button.value()

    # Detect button (ON → OFF)
    if last_state == 1 and current_state == 0:
        # Blink LED 5 times
        for i in range(5):
            led.value(1)
            sleep(0.3)
            led.value(0)
            sleep(0.3)

    last_state = current_state
    sleep(0.05)