from machine import Pin,PWM
import time 
buzzer= PWM(Pin(12))
buzzer.freq(1000)
buzzer.duty_u16(30000)
time.sleep(10)
buzzer.duty_u16(0)
bouton = Pin(16,Pin.IN,Pin.PULL_DOWN)
while True:
    if bouton.value()==1:
        buzzer.duty_u16(30000)
    else:
        buzzer.duty_u16(0)
    time.sleep(0.01)