#include "DHTesp.h"
#include <LCD_I2C.h>

#define LED 32
#define DHT_PIN  15 // ESP32 pin GIOP23 connected to DHT22 sensor
#define BUZZ 4
DHTesp dhtSensor;
LCD_I2C lcd(0x27, 16, 2);  // I2C address 0x3F, 16 column and 2 rows


void setup() {
  Serial.begin(115200);
  pinMode(14, INPUT);
  pinMode(LED, OUTPUT);
  pinMode(BUZZ, OUTPUT);

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

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  delay(1000);

  lcd.clear();

  if(digitalRead(14)==HIGH){

    digitalWrite(LED, HIGH);
    digitalWrite(BUZZ, HIGH);

    if (isnan(data.temperature) || isnan(data.humidity)) {
      lcd.setCursor(0, 0);
      lcd.print("Error in displaying");
      Serial.println(F("Error reading temperature and humidity!"));
    } else {
      lcd.setCursor(0, 0);  // display position
      lcd.print("Temp: "+ String(data.temperature, 2)+" °C");

      lcd.setCursor(0, 1);  // display position
      lcd.print("Humi: "+String(data.humidity, 1)+"%");
    }
    delay(2000);
    lcd.clear();
  }
  else{
    digitalWrite(LED, LOW);
    digitalWrite(BUZZ, LOW);
    lcd.clear();
    lcd.setCursor(0, 0);  
    lcd.print("Push the button!");
    delay(1000);
    lcd.clear();
  }
}