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

#define LED_PIN 32
#define DHT_PIN 15
#define PIR_SENSOR 12

LiquidCrystal_I2C lcd(0x27, 20, 4); // set the LCD address to 0x27 for a 16 chars and 2 line display
DHTesp dhtSensor;

void setup() {
  // Config LED_PIN output
  pinMode(LED_PIN, OUTPUT);

  // Setup for serial communication
  Serial.begin(9600);
  Serial.println("ESP32 collecting sensors data");

  // Setup for LCD
  lcd.init(); // initialize the lcd
  lcd.backlight();
  lcd.setCursor(1, 0);
  lcd.print("ESP32 collecting data ...");
  delay(1000);

  // Setup for DHT sensor
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(PIR_SENSOR, INPUT);
}

void loop() {
  lcd.clear();
  
  // Read data from DHT sensor
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  int temp = data.temperature;
  int humid = data.humidity;
  String stemp = String(temp) + "C";
  String shumid = String(humid) + "%";

  // Display data on LCD
  lcd.setCursor(0, 0);
  lcd.print("Temp: " + stemp);
  lcd.setCursor(0, 1);
  lcd.print("Humidity: " + shumid);

  // Print data to Serial
  Serial.println("Temp: " + stemp);
  Serial.println("Humidity: " + shumid);

  // Motion detection with PIR sensor
  int pir_value = digitalRead(PIR_SENSOR);
  if (pir_value == 1) {
    digitalWrite(LED_PIN, HIGH);
    Serial.println("Motion detected");
  } else {
    digitalWrite(LED_PIN, LOW);
    Serial.println("Motion ended");
  }

  Serial.println("---");

  // Delay for 2 seconds
  delay(2000);
}