#include <ESP32Servo.h>
#include <DHT.h>
#include "DHTesp.h"
#include <LiquidCrystal_I2C.h>

#define DHTPIN 15
#define DHTTYPE DHT22
#define TRIG_PIN 5
#define ECHO_PIN 18
#define SERVO_PIN 4
#define DISTANCE_THRESHOLD  15
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

const int DHT_PIN = 15;

DHT dht (DHTPIN, DHTTYPE);
DHTesp dhtSensor;
Servo servo;

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);


float duration_us, distance_cm;

void setup() {
  Serial.begin (9600);  
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  servo.attach(SERVO_PIN);
  servo.write(0);
  dht.begin();
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  lcd.init();
  lcd.backlight();

}

void loop() {
  float t = dht.readTemperature();
  float h = dht.readHumidity();
 
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  
  duration_us = pulseIn(ECHO_PIN, HIGH);

  distance_cm = 0.075 * duration_us;

  if (distance_cm < DISTANCE_THRESHOLD)
    servo.write(0); 
  else
    servo.write(90);

  Serial.println("Suhu = ");
  Serial.print(t);
  Serial.println(" C");
  Serial.println("Kelembaban = ");
  Serial.print(h);
  Serial.println(" %");

  Serial.println("Temp: " + String(data.temperature, 1) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  
  lcd.setCursor(0, 0);
  lcd.print("  Temp: " + String(data.temperature, 1) + "\xDF"+"C  ");
  lcd.setCursor(0, 1);
  lcd.print(" Humidity: " + String(data.humidity, 1) + "% ");

  Serial.print("distance: ");
  Serial.print(distance_cm);
  Serial.println(" cm");

  delay(1000);
}