# Rui Santos & Sara Santos - Random Nerd Tutorials
# Complete project details at https://RandomNerdTutorials.com/micropython-i2c-lcd-esp32-esp8266/

from machine import Pin, SoftI2C
from machine_i2c_lcd import I2cLcd
from machine import RTC
from time import sleep
import dht
import esp
esp.osdebug(None)

sensor = dht.DHT22(Pin(15))

# Define the LCD I2C address and dimensions
I2C_ADDR = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16

# Initialize I2C and LCD objects
i2c = SoftI2C(sda=Pin(21), scl=Pin(22), freq=400000)

# for ESP8266, uncomment the following line
#i2c = SoftI2C(sda=Pin(4), scl=Pin(5), freq=400000)

lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

lcd.putstr("It's working :)")
sleep(4)

def getRtcTime():
    rtc=RTC()
    #rtc.datetime((2024, 10, 25, 0, 12, 15, 0, 0)) # set a specific date and time
    yr,mon,day,dow,hor,minute,sec,ms=rtc.datetime()
    dt=(yr,mon,day,dow,hor,minute,sec,ms)
    dy=dt[0];dm=dt[1];dd=dt[3];dh=dt[4];dmin=dt[5]
    return(dy,dm,dd,dh,dmin)

def read_sensor():
  try:
    sensor.measure()
    temp = str(int(sensor.temperature())) + " C"
    hum = str(int(sensor.humidity())) + " %"
    return temp, hum
  except OSError as e:
    return('Failed to read sensor.')

#print(dh,':',dmin)
#print(dd,'/',dm,'/',dy)

try:
  while True:
    temp, hum = read_sensor()
    dy,dm,dd,dh,dmin=getRtcTime()
    if 0 <= dh <= 9 and 0 <= dmin <= 9:
      tstring=['0'+str(dh),'0'+str(dmin)]
    elif 0 <= dmin <= 9:
      tstring=[str(dh),'0'+str(dmin)]
    elif 0 <= dh <= 9:
      tstring=['0'+str(dh),str(dmin)]  
    else:
      tstring=[str(dh),str(dmin)]
    dstring=[str(dd),str(dm),str(dy)]
    #tstring=[str(dh),str(dmin)]
    date='/'.join(dstring)
    time=':'.join(tstring)
    #print(date)
    # Clear the LCD
    lcd.clear()
    # Display two different messages on different lines
    # By default, it will start at (0,0) if the display is empty
    lcd.putstr("Temp.: " + temp)
    lcd.move_to(0, 1)
    lcd.putstr("Humidity: " + hum)
    sleep(2)
    lcd.clear()
    lcd.putstr(date)
    # Starting at the second line (0, 1)
    lcd.move_to(0, 1)
    lcd.putstr(time)
    sleep(2)
except KeyboardInterrupt:
    # Turn off the display
    print("Keyboard interrupt")
    lcd.backlight_off()
    lcd.display_off()