from machine import Pin
from utime import sleep

print("Hello, Pi Pico!")

led_rosso = Pin(1, Pin.OUT)
led_giallo = Pin(3, Pin.OUT)
led_verde = Pin(9, Pin.OUT)
bottone = Pin(13, Pin.IN, Pin.PULL_UP)
led_states = [False, False, False]
current_led = 0

while True:
  bottone_state = bottone.value()
  
  if bottone_state == 0: 
        led_rosso.off()
        led_verde.off()
        led_giallo.off()
    
        led_states[current_led] = True
        if current_led == 0:
            led_rosso.on()
            sleep(1)
            led_rosso.off()
        elif current_led == 1:
            led_verde.on()
            sleep(1)
            led_verde.off()
        else:
            led_giallo.on()
            sleep(1)
            led_giallo.off()

        current_led = (current_led + 1) % 3