from machine import Pin, Timer
import time

BUTTON_PIN = 12  
LED_PIN = 14    


led = Pin(LED_PIN, Pin.OUT)
button = Pin(BUTTON_PIN, Pin.IN)  
blink_timer = Timer(0) 


led_on = False
button_pressed = False

def toggle_led(t):
    global led_on
    led_on = not led_on
    led.value(led_on)

def handle_button(pin):
    global button_pressed
    
    if pin.value(): 
        if not button_pressed:
            button_pressed = True
            blink_timer.init(period=500, mode=Timer.PERIODIC, callback=toggle_led)
    else: 
        if button_pressed:
            button_pressed = False
            blink_timer.deinit()
            led.off()


button.irq(trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING, handler=handle_button)