from machine import Pin,RTC
from utime import sleep

print("Hello, ESP32!")
rtc  = RTC()
print(rtc.datetime())
led = Pin(15, Pin.OUT)
def dsoffled():
    tsr = str(rtc.datetime())
    print('--',tsr)
    if("2000,1,1,01,01"==tsr):
        led.off()

rtc.wakeup(3000,callback=dsoffled())