# reference https://wokwi.com/projects/399897718244007937

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

dSensor = dht.DHT22(Pin(2))  // use GPIO2


def readDHT():
    try:
        dSensor.measure()
        temp = dSensor.temperature()
        temp_f = (temp * (9/5)) + 32.0
        hum = dSensor.humidity()
        print('Temperature= {} C, {} F'.format(temp, temp_f))
        print('Humidity= {} '.format(hum))
        return temp, hum
    except OSError as e:
        print('Failed to read data from DHT sensor')


I2C_ADDR = 0x27
totalRows = 2
totalColumns = 16
i2c = SoftI2C(scl=Pin(1), sda=Pin(0), freq=10000)   // I2C use GPIO 0 and 1
lcd = I2cLcd(i2c, I2C_ADDR, totalRows, totalColumns)

degree = bytearray([0x1c,0x14,0x1c,0x00,0x00,0x00,0x00,0x00]) #define a customized LCD icon for º (degree sign)
lcd.custom_char(0, degree)         #degree sign 'º' will be used as chr(0) in program


while True: 
    print(readDHT())  
    t, h = readDHT()    
    lcd.putstr("Temp: "+str(t)+ chr(0)+"C") #display temperature to LCD
    lcd.move_to(0,1)
    lcd.putstr('Hum: ' + str(h) + "%")
    time.sleep(4)
    lcd.clear()