from machine import Pin, Timer
import time

BUTTON_PIN = 12  
LED_PIN = 14    


button_pressed_time = 0
timer = Timer(0)  


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

def button_handler(pin):
    global button_pressed_time

    if button.value() == 1:  
        button_pressed_time = time.ticks_ms()
        timer.init(period=50, mode=Timer.PERIODIC, callback=check_hold_time)
    else:  
        timer.deinit()
        led.off()

def check_hold_time(timer):
    global button_pressed_time
    
    if button.value() == 1:  
        hold_time = time.ticks_diff(time.ticks_ms(), button_pressed_time)
        if hold_time >= 3000: 
            led.on()
    else:
        timer.deinit()


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