from machine import Pin, UART, ADC
from time import sleep
from dht import DHT22

# DHT22 on GPIO14
dht_sensor = DHT22(Pin(14))

# LDR on GPIO34
ldr = ADC(Pin(34))
ldr.atten(ADC.ATTN_11DB)  # 0 - 3.3V range

# UART
uart = UART(2, baudrate=9600, tx=Pin(17), rx=Pin(16))

while True:
  try:  
    # Getting Temperature and humidity from DHT22
    dht_sensor.measure()
    t = dht_sensor.temperature()
    h = dht_sensor.humidity()

    # Getting data from LDR
    lux = ldr.read()

    # Data Format
    msg = "{:.1f},{:.1f},{}\n".format(t, h, lux)

    # Sending Data
    uart.write(msg)
    print("You sent: ", msg.strip())

    sleep(2) # Main loop delay
  except Exception as e:
    print("Error: ", e)