from machine import Pin, I2C
from time import sleep
import dht
from i2c_lcd import I2cLcd

# Initialize DHT22 sensor on GPIO28
sensor = dht.DHT22(Pin(28))  # Change to DHT11 if needed

# Setup I2C (SDA=GP0, SCL=GP1)
i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=400000)

# Scan for I2C devices
devices = i2c.scan()
if not devices:
    print("No I2C device found! Check wiring.")
    lcd = None
    lcd_available = False
else:
    print("I2C devices found:", [hex(dev) for dev in devices])
    lcd_addr = 0x27 if 0x27 in devices else devices[0]
    lcd = I2cLcd(i2c, lcd_addr, 2, 16)
    lcd.putstr("Initializing...")
    sleep(1)
    lcd.clear()
    lcd_available = True

sleep(2)  # Allow sensor to stabilize

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

        print(f"Temperature: {temp:.1f} °C  Humidity: {hum:.1f} %")

        if lcd_available:
            lcd.clear()
            lcd.putstr(f"Temp: {temp:.1f}{chr(223)}C")
            lcd.move_to(0, 1)
            lcd.putstr(f"Hum : {hum:.1f} %")
        else:
            print("LCD not available.")

    except OSError as e:
        print("Sensor Error:", e)
        if lcd_available:
            lcd.clear()
            lcd.putstr("Sensor Error")
        else:
            print("LCD not available to display error.")

    sleep(3)