#include <DHT.h>;
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>


#define TFT_DC 4
#define TFT_CS 10
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

#define DHTTYPE DHT22

#define DHTPIN1 3
#define DHTPIN2 5

int a = 0;
int b = 0;
int c = 0;
int d = 0;

int heatingON = 0;
int humidON = 0;

int TempSetPoint = 24;
int HumidSetPoint = 40;


float humidity1 = 0;
float temperature1 = 0;
float humidity2 = 0;
float temperature2 = 0;
float temp = 0;
float humid = 0;
float tempstore = 0;
float humidstore = 0;

DHT dht1(DHTPIN1, DHTTYPE);
DHT dht2(DHTPIN2, DHTTYPE);

void setup()
{
  Serial.begin(9600);
  dht1.begin();
  dht2.begin();

  tft.begin();
  tft.setRotation(1);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(0, 0);
  tft.print("Initialising...");
  delay(1000);
}

void loop()
{
  tft.setTextColor(ILI9341_WHITE);
  if (a == 0) tft.fillScreen(ILI9341_BLACK), a = 1;

  temperature1 = dht1.readTemperature();
  humidity1 = dht1.readHumidity();
  temperature2 = dht2.readTemperature();
  humidity2 = dht2.readHumidity();

  temp = (temperature1 + temperature2) / 2;
  humid = (humidity1 + humidity2) / 2;

  Serial.print("Temperature 1 ");
  Serial.print(temperature1);
  Serial.print(" Humidity 1 ");
  Serial.println(humidity1);
  Serial.print("Temperature 2 ");
  Serial.print(temperature2);
  Serial.print(" Humidity 2 ");
  Serial.println(humidity2);

  if (temp != tempstore or humid != humidstore) {
    tft.fillScreen(ILI9341_BLACK);
    tft.setCursor(0, 0), tft.print("Temperature = ");
    tft.setCursor(175, 0), tft.print(temp);
    tft.setCursor(0, 20), tft.print("Humidity = ");
    tft.setCursor(175, 20), tft.print(humid);
    tempstore = temp;
    humidstore = humid;
    delay(5000);
  }

  if (humid < HumidSetPoint) {
    humidON = 1;
    tft.setTextColor(ILI9341_WHITE);
    tft.setCursor(0, 40), tft.print("Humidity On..");
  }
  if (humid >= HumidSetPoint) {
    humidON = 0;
    tft.setTextColor(ILI9341_BLACK);
    tft.setCursor(0, 40), tft.print("Humidity On..");
  }

  if (temp < TempSetPoint) {
    heatingON = 1;
    tft.setTextColor(ILI9341_WHITE);
    tft.setCursor(0, 60), tft.print("Heating ON..");
  } 
   if (temp >= TempSetPoint){
    heatingON = 0;
    tft.setTextColor(ILI9341_BLACK);
    tft.setCursor(0, 60), tft.print("Heating ON..");
  }

}