/*********************************************************************
* TEMPERATURE AND HUMIDITY SENSOR USING DHT11/22, ESP32, AND LCD I2C *
*                   SUBMITTED BY: MURILLO, CYRIL C                   *
*               SUBMITTED TO: PROF. MICHAEL T. SAMONTE               *
* *******************************************************************/

#include <DHT.h>
#include <LiquidCrystal_I2C.h>
const int DHT_Pin =4;
float temperature ;
float humidity ;
int totalColumns =16; //total columns in I2C
int totalRows = 2; //rows in our I2C
DHT dht(DHT_Pin, DHT22); // change 22 to 11 if using DHT11
LiquidCrystal_I2C lcd (0x27, totalColumns, totalRows);

void setup ()
{
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(2, 0);
}

void loop ()
{
  float humi = dht.readHumidity(); // read humid
  float tempC = dht.readTemperature(); // read temp

  lcd.clear();

  if (isnan(tempC) || isnan(humi))
  {
    lcd.setCursor(0, 0);
    lcd.print("Error");
  }
  else
  {
    lcd.setCursor(0, 0); // display position
    lcd.print("Temp "); //print temp
    lcd.print(tempC);
    lcd.print(" Cels");
    
    lcd.setCursor(0, 1); // display position
    lcd.print("Humid: "); // print humid
    lcd.print(humi);
    lcd.print("%");
  }
  delay (2000); // delay 2 seconds
}