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

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

#define PIN_TRIG 4
#define PIN_ECHO 2

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

void setup() {
  //setup for serial communication
  Serial.begin(9600);
  Serial.print("ESP32 collecting sensors data");
  //setup for dht sensor
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  //config LED_PIN output
  pinMode(LED_PIN, OUTPUT);
  pinMode(PIR_SENSOR, INPUT);

  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);

  lcd.init(); // initialize the lcd 
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(1,0);
  lcd.print("DHT sensor data ...");
  delay(1000);
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  int temp = data.temperature;
  int humid = data.humidity;
  String stemp = String(temp) + "C";
  String shumid = String(humid) + "%";
  Serial.println("Temp: " + stemp);
  Serial.println("Humidity: " + shumid);
  Serial.println("---");
  //lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temp: " + String(data.temperature, 2) + "C");
  lcd.setCursor(0,1);
  lcd.print("Humidity: " + String(data.humidity, 2) + "%");
  delay(100);

//PIR motion sensor
  int pir_value = digitalRead(PIR_SENSOR);
  if(pir_value == 1){
    digitalWrite(LED_PIN, HIGH);
    Serial.println("Motion detected");
    delay(100);
  }
  else{
    digitalWrite(LED_PIN, LOW);
    Serial.println("Motion ended");
    delay(100);
  }
  
}