print("Hello, ESP32!")
from machine import Pin, PWM
import time
 
buzzer = PWM(Pin(2), freq=440, duty=512)
 
def SoundBuz(freq, sleep):
    buzzer.freq(freq)
    buzzer.duty(512)
    time.sleep(sleep)
 
while True:
    SoundBuz(440, 0.5)
    SoundBuz(880, 0.5)