#include <LiquidCrystal_I2C.h>
#include "DHTesp.h"

#define MQ2_DIG 13
#define MQ2_ANA 12

#define MQ135_DIG 2
#define MQ135_ANA 36



LiquidCrystal_I2C lcd(0x27, 20, 4);
const int DHT_PIN = 15;

DHTesp dhtSensor;

void setup() {
  // put your setup code here, to run once:
  pinMode(MQ2_DIG, INPUT);
  pinMode(MQ2_ANA, INPUT);


  Serial.begin(115200);
  Serial.println("Hello, All");

  lcd.init();
  lcd.backlight();

  lcd.setCursor(0,2);
  lcd.print("Industrial Safety");
  lcd.setCursor(0,1);
  lcd.print("Home & ");
  delay(3000);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("Digital: " + String(digitalRead(MQ2_DIG)));
  Serial.println("Analog: " + String(analogRead(MQ2_ANA))+"ppm");
  Serial.println("Digital: " + String(digitalRead(MQ135_DIG)));
  Serial.println("Analog: " + String(analogRead(MQ135_ANA))+"ppm");
  Serial.println("---");

  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("Temp: " + String(data.temperature, 2) + " C");
  lcd.setCursor(0,2);
  lcd.print("Humidity: " + String(data.humidity, 1) + "%");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Gas value: ");
  lcd.setCursor(0,1);
  lcd.print("Digital: " + String(digitalRead(MQ2_DIG)));
  lcd.setCursor(0,2);
  //lcd.print()
  lcd.print(("Analog: " + String(analogRead(MQ2_ANA))));
  delay(2000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
  //Serial.print("Digital: ");
  //Serial.println(digitalRead(MQ2_DIG));
  lcd.clear();
  lcd.print("Air Quality: ");
  lcd.setCursor(0,1);
  lcd.print("Digital: " + String(digitalRead(MQ135_DIG)));
  lcd.setCursor(0,2);
  //lcd.print()
  lcd.print(("Analog: " + String(analogRead(MQ135_ANA))));
  delay(2000);
}