from machine import Pin
from gpio_lcd import GpioLcd
import utime
from time import sleep
import dht

sensor = dht.DHT22(Pin(22))
conversion_factor = 3.3 / 65535
lcd = GpioLcd(rs_pin = Pin(0),
              enable_pin = Pin(1),
              d4_pin = Pin(2),
              d5_pin = Pin(3),
              d6_pin = Pin(4),
              d7_pin = Pin(5),
              num_lines = 2, num_columns = 16)

degree = bytearray([0x00, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00])

def sensorTH():
    try:
        sleep(2)
        sensor.measure()
        temp = sensor.temperature()
        hum = sensor.humidity()
        return temp, hum
    except OSError as e:
        print('Failed to read sensor.')

while True:
    temperature, humidity = sensorTH()
    temp_f = temperature * (9/5) + 32.0
    lcd.move_to(0, 0)
    lcd.putstr("Temp")
    lcd.move_to(4, 0)
    lcd.custom_char(0, degree)
    lcd.putchar(chr(0))
    lcd.move_to(5, 0)
    lcd.putstr("C / H.Rel %")
    lcd.move_to(1, 1)
    temp_fmt = "{0:.2f}".format(temperature)
    lcd.putstr(temp_fmt)
    lcd.move_to(10, 1)
    hum_fmt = "{0:.2f}".format(humidity)
    lcd.putstr(hum_fmt)
    print('Temperature: ', temp_fmt, "C")
    print('Temperature:  %3.2f F'  %temp_f)
    print('Humidity:    ', hum_fmt, "%")
    utime.sleep(0.5)