#include <DHT.h>

#define DHTPIN 15         // Pin DHT22
#define DHTTYPE DHT22     // Tipe sensor DHT
#define TRIG_PIN 13       // Pin Trig untuk sensor ultrasonik
#define ECHO_PIN 12       // Pin Echo untuk sensor ultrasonik
#define LED_PIN 14        // Pin LED

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  dht.begin();
  
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  // Baca data suhu dan kelembapan
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Periksa apakah sensor berhasil membaca data
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Gagal membaca data DHT22!");
    return;
  }

  // Baca jarak dengan sensor ultrasonik
  long duration, distance;
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  duration = pulseIn(ECHO_PIN, HIGH);
  distance = duration * 0.034 / 2; // Hitung jarak dalam cm

  // Tampilkan data di Serial Monitor
  Serial.print("Suhu: ");
  Serial.print(temperature);
  Serial.print(" °C, Kelembapan: ");
  Serial.print(humidity);
  Serial.print(" %, Jarak: ");
  Serial.print(distance);
  Serial.println(" cm");

  // Kontrol LED berdasarkan jarak
  if (distance < 10) { // Jarak kurang dari 10 cm
    digitalWrite(LED_PIN, HIGH); // LED menyala
  } else {
    digitalWrite(LED_PIN, LOW);  // LED mati
  }

  delay(2000); // Tunggu 2 detik sebelum membaca ulang
}