from machine import Pin, SoftI2C
from i2c_lcd import I2cLcd
import time
import dht

i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=100000)
lcd = I2cLcd(i2c, 0x27, 2, 16)
time.sleep(1)
lcd.clear()

d = dht.DHT11(Pin(23))
t = 0
h = 0

led1 = Pin(2, Pin.OUT)  
led2 = Pin(4, Pin.OUT) 
led3 = Pin(16, Pin.OUT) 
led1.off()
led2.off()
led3.off()

text = 'Starting...'
lcd.putstr(text)

switch = Pin(18, Pin.IN, Pin.PULL_UP)

while True:
    if not switch.value():  
        try:
            d.measure()
            time.sleep(2)
            t = d.temperature()
            h = d.humidity()

            temp = 'Temp: {:.0f} C'.format(t)
            humid = 'Hum: {:.0f} %'.format(h)
            print('DHT11:', t, h)

            lcd.clear()
            lcd.putstr(temp)
            lcd.move_to(0, 1)
            lcd.putstr(humid)

            if t > 30:  
                led1.on()
            else:
                led1.off()

            if 28 <= t <= 30:
                led2.on()
            else:
                led2.off()

            if t < 28:
                led3.on()
            else:
                led3.off()

            time.sleep(5)
        except Exception as e:
            pass
    else:
        led1.off()
        led2.off()
        led3.off()
        lcd.clear()