#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHTPIN 4    
#define DHTTYPE DHT22 
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);
float intTemperature = 0;
float intHumidity = 0;
int intRelayPin = 2;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Start DHT");
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode(intRelayPin,OUTPUT);
  Serial.println("Hello, ESP32!");
}

void loop(){
  getMyTemperature();
  postmyDisplayLcd(intTemperature,intHumidity);
  postMyRelay(intTemperature);
  delay(2000);
}
void getMyTemperature() {
  intTemperature = dht.readTemperature();
  intHumidity = dht.readHumidity();
  Serial.println("Temperature " + String(intTemperature) +"°C ");
  Serial.println("Humidity " + String(intHumidity) +"% ");
  
}
void postmyDisplayLcd(float x, float y) {
  lcd.setCursor(0, 0);
  lcd. print(" Temperature :" + String(x));
  lcd.setCursor(0, 1);
  lcd. print(" Humidity :"+ String(y));
}

void postMyRelay(float x) {
  if (x > 30 ){
    digitalWrite(intRelayPin, HIGH);
    Serial.println("Relay, On!");
    delay(1000);
  }
  else {
  digitalWrite(intRelayPin, LOW);
  Serial.print("Relay, Off!");
  delay(1000);
  Serial.println();
  }
}


/*int intRelayPin = 2;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(intRelayPin,OUTPUT);
  Serial.println("Hello, ESP32!");
}

void loop() {
  digitalWrite(intRelayPin, HIGH);
  Serial.print("Relay, On!");
  delay(1000);
  Serial.println();
  digitalWrite(intRelayPin, LOW);
  Serial.print("Relay, Off!");
  delay(1000);
  Serial.println();
  // put your main code here, to run repeatedly:
   // this speeds up the simulation
}
*/
/*
#include "DHT.h"
#define DHTPIN 12    
#define DHTTYPE DHT22 
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Start DHT");
  dht.begin();
}
void loop() {
  float intTemperature = dht.readTemperature();
  float intHumidity = dht.readHumidity();
  Serial.println("Temperature " + String(intTemperature) +"°C ");
  Serial.println("Humidity " + String(intHumidity) +"% ");
  delay(2000);
}
*/
/*
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);
void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
}

void loop() {
  lcd.setCursor(0, 0);
  lcd. print(" Temperature :");
  lcd.setCursor(0, 1);
  lcd. print(" Humidity :");
  delay(2000);

}
*/