from machine import Pin
import utime
import dht
from esp32_gpio_lcd import GpioLcd

sensor = dht.DHT22(Pin(15))
led = Pin(2, Pin.OUT)
relay = Pin(4, Pin.OUT)

temp = 0
hum = 0

lcd = GpioLcd(
            rs_pin = Pin(13),
            enable_pin = Pin(12),
            d4_pin = Pin(14),
            d5_pin = Pin(27),
            d6_pin = Pin(26),
            d7_pin = Pin(25),
            num_lines = 4,
            num_columns = 20)

lcd.move_to(0,0)
lcd.putstr("Le Thanh Nam")
lcd.move_to(0,1)
lcd.putstr("THCN2 K60")

def display_sensor():
    global temp, hum
    sensor.measure()   #sensor begin
    temp = sensor.temperature()
    hum = sensor.humidity()
    lcd.move_to(0,2)
    lcd.putstr("temperature: ")
    lcd.move_to(13,2)
    lcd.putstr(str(temp))
    lcd.move_to(18,2)
    lcd.putstr("*C")
    lcd.move_to(0,3)
    lcd.putstr("Humidity: ")
    lcd.move_to(10,3)
    lcd.putstr(str(hum))
    lcd.move_to(15,3)
    lcd.putstr("%")
   

while True:

    display_sensor()
    if temp > 30:
        led.value(1)
    if temp < 25:
        led.value(0)
    if hum > 80:
        relay.value(1)
    if hum < 70: 
        relay.value(0)