print("Hello, ESP32!")
from machine import Pin, Timer
from time import sleep

led = Pin(15,Pin.OUT)

myTimer = Timer(1)

def toggle_led(myTimer):
    led.on()
    sleep(0.5)
    led.off()
    sleep(0.5)
    

myTimer.init(period=1000,mode=Timer.ONE_SHOT,callback=toggle_led)

while True:
    sleep(1)
    print('please sleep here')