from machine import Pin, SoftI2C
from lcd_api import LcdApi
from i2c_lcd import I2cLcd
from time import sleep
import dht

i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=10000)
lcd = I2cLcd(i2c, 0x27, 2, 16)

led1 = Pin(5, Pin.OUT)
led2 = Pin(19, Pin.OUT)

dht_sensor = dht.DHT22(Pin(15))

while True:
    try:
        dht_sensor.measure()
        temp = dht_sensor.temperature()  
        humidity = dht_sensor.humidity()  
        
        lcd.clear()
        lcd.move_to(0, 0)
        lcd.putstr(f"Temp: {temp:.1f}C")
        lcd.move_to(0, 1)
        lcd.putstr(f"Hum: {humidity:.1f}%")
        sleep(2)

        if temp > 50 and humidity > 40:
            lcd.clear()
            lcd.move_to(0, 0)
            lcd.putstr("WARNING: DANGER!")
            lcd.move_to(0, 1)
            lcd.putstr(f"T:{temp:.1f}C H:{humidity:.1f}%")
            for _ in range(3):
                led1.on()
                led2.on()
                sleep(0.5)
                led1.off()
                led2.off()
                sleep(0.5)
        elif temp > 50:
            lcd.clear()
            lcd.move_to(0, 0)
            lcd.putstr("Temp High!")
            lcd.move_to(0, 1)
            lcd.putstr(f"Temp: {temp:.1f}C")
            for _ in range(3):
                led1.on()
                sleep(0.5)
                led1.off()
                sleep(0.5)
        elif humidity > 40:
            lcd.clear()
            lcd.move_to(0, 0)
            lcd.putstr("Humidity High!")
            lcd.move_to(0, 1)
            lcd.putstr(f"Hum: {humidity:.1f}%")
            for _ in range(5):
                led2.on()
                sleep(0.5)
                led2.off()
                sleep(0.5)
        else:
            led1.off()
            led2.off()

        sleep(2)  

    except OSError as e:
        lcd.clear()
        lcd.move_to(0, 0)
        lcd.putstr("Sensor Error")
        sleep(2)