#include <ArduinoJson.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#define TFT_DC 2
#define TFT_CS 15
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
const int redPin=21;
const int BluePin=26;
const int GreenPin=27;
const int Buzzer=25;
#include "DHT.h"
#define DHTPIN 13  
#define DHT1PIN 12   
#define DHT2PIN 14  
#define DHT3PIN 16 
#define DHT4PIN 22  
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);
DHT dht1(DHT1PIN, DHTTYPE);
DHT dht2(DHT2PIN, DHTTYPE);
DHT dht3(DHT3PIN, DHTTYPE);
DHT dht4(DHT4PIN, DHTTYPE);
void setup() {
  Serial.begin(9600);
  //Serial.println(F("DHTxx test!"));
  pinMode(redPin, OUTPUT);
  pinMode(BluePin, OUTPUT);
  pinMode(GreenPin, OUTPUT);
  pinMode(Buzzer, OUTPUT);
  tft.begin();
  tft.setRotation(0);
  dht.begin();
  dht1.begin();
  dht2.begin();
  dht3.begin();
  dht4.begin();
}
void loop() {
tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(2, 0);
 delay(2000);
 float h = dht.readHumidity();
 float h1 = dht1.readHumidity();
 float h2 = dht2.readHumidity();
 float h3 = dht3.readHumidity();
 float h4 = dht4.readHumidity();
  float t = dht.readTemperature();
  float t1=dht1.readTemperature();
  float t2 = dht2.readTemperature();
  float t3=dht3.readTemperature();
  float t4=dht4.readTemperature();
  //float temp=((t+t1+t3+t4)/5);
// float f = dht.readTemperature(true);
 if (isnan(h) || isnan(t) || isnan(t1)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  //float hif = dht.computeHeatIndex(f, h);

//  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("H1: "));
  Serial.print(h);
  Serial.print(F("%  T1: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(F("H2: "));
  Serial.print(h1);
  Serial.print(F("%  T2: "));
  Serial.print(t1);
  Serial.print(F("°C "));
  Serial.print(F("H3: "));
  Serial.print(h2);
  Serial.print(F("%  T3: "));
  Serial.print(t2);
  Serial.print(F("°C "));
    Serial.print(F("H4: "));
  Serial.print(h3);
  Serial.print(F("%  T4: "));
  Serial.print(t3);
  Serial.print(F("°C "));
    Serial.print(F("H5: "));
  Serial.print(h4);
  Serial.print(F("%  T5: "));
  Serial.print(t4);
  Serial.print(F("°C "));
 // Serial.print(f);
 // Serial.print(F("°F  Heat index: "));
  //Serial.print(hic);
 // Serial.print(F("°C "));
  //Serial.print(hif);
  //Serial.println(F("°F"));
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(2);
  tft.print("FIRE ALARM SYSTEM");
  tft.println(" ");
  tft.println(" ");
  tft.setTextColor(ILI9341_PINK);
 tft.setTextSize(2);
  tft.print(F("H1:"));
  tft.print(h);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.print(F("   T1:"));
  tft.print(t);
  tft.println(" ");
   tft.println(" ");
   tft.setTextColor(ILI9341_PINK);
 tft.setTextSize(2);
  tft.print(F("H2:"));
  tft.print(h1);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.print(F("   T2:"));
  tft.print(t1);
   tft.println(" ");
    tft.println(" ");
    tft.setTextColor(ILI9341_PINK);
 tft.setTextSize(2);
  tft.print(F("H3:"));
  tft.print(h2);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.print(F("   T3:"));
  tft.print(t2);
  tft.println(" ");
  tft.println(" ");
   tft.setTextColor(ILI9341_PINK);
 tft.setTextSize(2);
    tft.print(F("H4:"));
  tft.print(h3);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.print(F("   T4:"));
  tft.print(t3);
  tft.println(" ");
  tft.println(" ");
   tft.setTextColor(ILI9341_PINK);
 tft.setTextSize(2);
  tft.print(F("H5:"));
  tft.print(h4);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.print(F("   T5:"));
  tft.print(t4);
        tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
      tft.println(" ");
    tft.println(" ");
    tft.println(" ");
    //tft.print("Average Temp:");
    //tft.print(temp);
      if((t>=40) || (t1>=40) || (t2>=40) ||(t3>=40) ||(t4>=40)){
       tft.println(" ");
    tft.println(" ");
    tft.println(" ");
     tft.setTextColor(ILI9341_RED);
  tft.setTextSize(2);
    tft.print("        Hazard");
    digitalWrite(redPin, HIGH);
    digitalWrite(BluePin, LOW);
    digitalWrite(GreenPin, LOW);
    delay(1000);
    digitalWrite(Buzzer, HIGH);
    delay(2000);
    digitalWrite(Buzzer, LOW);
    delay(1000);
  }
 else if((((t+t1+t2+t3+t4)/5)>=25) && (((t+t1+t2+t3+t4)/5)<=40)){
    //  float int temp1=(t+t1+t3+t4)/6;
       tft.println(" ");
    tft.println(" ");
    tft.println(" ");
     tft.setTextColor(ILI9341_BLUE);
    tft.setTextSize(2);
    tft.print("Ambient Temperature");
    digitalWrite(BluePin, HIGH);
    digitalWrite(redPin, LOW);
    digitalWrite(GreenPin, LOW);
    //    digitalWrite(BUZZER_PIN, LOW);
    //delay(1000);
  }
  else{
    tft.println(" ");
    tft.println(" ");
    tft.println(" ");
     tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
    tft.print("        Cold");
    digitalWrite(GreenPin, HIGH);
    digitalWrite(redPin, LOW);
    digitalWrite(BluePin, LOW);
    // digitalWrite(BUZZER_PIN, LOW);
    delay(1000);
  }
    
  
   delay(2000);
}
//if(t>40)||