// Import the libraries
#include <LiquidCrystal_I2C.h>
#include <DHT.h>

// Define the various parts
// Liquid Crystal Display
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

// DHT Sensor
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // Setup the parts
  // Liquid Crystal Display
  lcd.init();
  lcd.backlight();
  lcd.print("Loading");
  
  // DHT
  dht.begin();

  // allow all systems to load
  delay(1000);

  // clear the lcd screen for the program to load
  lcd.clear();
}

void loop() {
  // Call the first sensor
  TempHumRead();
}

void TempHumRead() {
  // read the humidity
  float Hum = dht.readHumidity();
  // read the temperature and compute the heat index (Celcius)
  float TempC = dht.readTemperature();
  float HiC = dht.computeHeatIndex(TempC, Hum, false);
  // conversion to Farenheit and compute the heat index
  float TempF = ((TempC*9/5)+32);
  float HiF = dht.computeHeatIndex(TempF, Hum);
  // Print to the screen
  lcd.clear();
  lcd.setCursor( 1, 0);
  lcd.print("Temp:");
  lcd.setCursor( 7, 0);
  lcd.print(TempC);
  lcd.setCursor( 14, 0);
  lcd.print("C");
  lcd.setCursor( 1, 1);
  lcd.print("Hum:");
  lcd.setCursor( 7, 1);
  lcd.print(Hum);
  lcd.setCursor( 14, 1);
  lcd.print("%");
  // delay for heat index cycling
  delay(2500);
  // print the heat index
  lcd.clear();
  lcd.setCursor( 1, 0);
  lcd.print("Heat Index:");
  lcd.setCursor( 1, 1);
  lcd.print(HiC);
  lcd.setCursor( 7, 1);
  lcd.print("C");
  // delay for reset
  delay(2500);
}