from machine import Pin
from time import sleep
from dht import DHT22

# Initialize DHT22 on GPIO 14
dht = DHT22(Pin(14))

# Initialize LEDs
blue_led = Pin(0, Pin.OUT)    # Blue LED for <15°C
red_led = Pin(2, Pin.OUT)     # Red LED for >30°C
yellow_led = Pin(13, Pin.OUT) # Yellow LED for 15°C–30°C

# Let the sensor stabilize
sleep(2)

while True:
    try:
        dht.measure()
        temp = dht.temperature()
        hum = dht.humidity()

        print(f"Temperature: {temp}°C   Humidity: {hum}%")

        # Temperature logic
        if temp < 15:
            blue_led.on()
            yellow_led.off()
            red_led.off()
        elif 15 <= temp <= 30:
            blue_led.off()
            yellow_led.on()
            red_led.off()
        else:  # temp > 30
            blue_led.off()
            yellow_led.off()
            red_led.on()

    except OSError as e:
        print("Sensor read failed. Check wiring or resistor.")

    sleep(2)