#ex2: feu de circulation avec buzzer 

from machine import Pin
from utime import sleep
from picozero import Speaker
ledR=Pin(1,Pin.OUT)
ledJ=Pin(2,Pin.OUT)
ledV=Pin(3,Pin.OUT)
Buzzer=Speaker(27)
while True:
  ledR.on() # R on
  ledJ.off()# J off
  ledV.off()#V off
  for i in range(5):
    Buzzer.on()
    sleep(0.5)
    Buzzer.off()
    sleep(0.5)

  ledR.off();Buzzer.off()#j and buzzer off
  ledJ.on()#j on
  sleep(1)
  ledJ.off()#j off
  ledV.on()# V on
  sleep(6)
  ledV.off()# V off
  for i in range(10):
    ledJ.toggle()#led prend l'etet inverse d'etat precedent apres 0.1(clignotant pour 10 fois)
    sleep(0.2)