import machine
import time


azul = machine.Pin(13, machine.Pin.OUT)
amarillo = machine.Pin(14, machine.Pin.OUT)
morado = machine.Pin(12, machine.Pin.OUT)

def encender_color(pin):
    azul.off()
    amarillo.off()
    morado.off()
    pin.on()

def semaforo():
    while True:
        encender_color(azul)
        time.sleep(5) 
        encender_color(amarillo)  
        time.sleep(2)  
        encender_color(morado) 
        time.sleep(5)  

semaforo()