from time import sleep
sleep(0.1)

from machine import Pin, ADC

led = Pin(21, Pin.OUT)
D0 = Pin(18, Pin.IN)
A0 = ADC(Pin(27))

while True:
    sleep(0.3)
    photo_d_value = D0.value()
    photo_a_value = A0.read_u16()
    print(photo_d_value, photo_a_value)
    if photo_a_value > 54000:
        led.on()
    else:
        led.off()