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

LiquidCrystal_I2C lcd(0x27, 16, 2);
const int DHT_PIN = 15;
const int mq2pin = 35;
const int mq135pin = 33;  



DHTesp dhtSensor;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, All");

  lcd.init();
  lcd.backlight();
  lcd.print("hello guys!");
  lcd.setCursor(2,0);
  lcd.print("Industrial &");
  lcd.setCursor(0,1);
  lcd.print("Home Safety");
  delay(2000);
 // lcd.begin(16,2);
 // lcd.print("MQ 2-Readings ");
 // delay(2000);
  lcd.clear();

  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("---"); 
  delay(2000); 
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temp: " + String(data.temperature, 2) + " C");
  lcd.setCursor(0,1);
  lcd.print("Humidity: " + String(data.humidity, 1) + "%");
  delay(2000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
  lcd.clear();

  int mq2Value = analogRead(mq2pin);
  Serial.println("MQ2 SENSOR VALUE-  ");
  Serial.println(mq2Value);
  lcd.setCursor(0, 0); // Set cursor to the first line
  lcd.print("MQ2 Gas Level: ");
  lcd.setCursor(0, 1); // Set cursor to the second line
  lcd.print(mq2Value); // Display the MQ-2 reading
  delay(2000);
  lcd.clear();

  int mq135Value = analogRead(mq135pin);
  Serial.println("MQ135 SENSOR VALUE:  ");
  Serial.println(mq135Value);
  lcd.setCursor(0, 0); // Set cursor to the first line
  lcd.print("MQ135 GaS Level: ");
  lcd.setCursor(0, 1); // Set cursor to the second line
  lcd.print(mq135Value); // Display the MQ-2 reading
  delay(2000);
  lcd.clear();
  

}