import machine
import utime
import dht
import BlynkLib

# Blynk Auth Token
BLYNK_AUTH = 'yScpufXyEtt2AQXL4Xcb6tGR_Mu-p5Ci'

# Initialize Blynk
blynk = BlynkLib.Blynk(BLYNK_AUTH)

# Initialize DHT22 sensor
dht_pin = machine.Pin(2)  # GPIO2 (GP2) for DHT22 data line
sensor = dht.DHT22(dht_pin)

# Blynk virtual pin assignments
TEMP_VPIN = 1
HUM_VPIN = 2

def read_sensor():
    try:
        sensor.measure()
        temperature = sensor.temperature()
        humidity = sensor.humidity()
        return temperature, humidity
    except OSError as e:
        print('Failed to read sensor.')
        return None, None

def send_data_to_blynk():
    temperature, humidity = read_sensor()
    if temperature is not None and humidity is not None:
        print(f"Temperature: {temperature:.2f} C")
        print(f"Humidity: {humidity:.2f} %")
        blynk.virtual_write(TEMP_VPIN, temperature)
        blynk.virtual_write(HUM_VPIN, humidity)
    else:
        print("Failed to read from DHT22 sensor.")

# Main loop
while True:
    blynk.run()  # Handle Blynk communication
    send_data_to_blynk()
    utime.sleep(2)  # Send data every 2 seconds