#include "DHT.h"

#define DHTPIN 2
#define DHTTYPE DHT22
#define led 12
#define buzzer 13
#define relay 3

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  pinMode(led, OUTPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(relay, OUTPUT);
  Serial.begin(115200);
  Serial.println(F("Alat Pendeteksi Kebakaran"));

  dht.begin();
}

void loop() {
  float s = dht.readTemperature();
  float k = dht.readHumidity();

  if(isnan(s) || isnan(k)) {
    Serial.println(F("Gagal membaca data dari sensor DHT"));
    return;
  }

  // Jika suhu >= 40°C dan kelembapan <= 30%, aktifkan alarm
  if(s >= 40 && k <= 30) {
    digitalWrite(led, HIGH);
    digitalWrite(relay, HIGH);
    tone(buzzer, 100);
  }
  // Jika suhu < 33°C dan kelembapan > 30%, matikan alarm
  else if (s < 35 && k > 30) {
    digitalWrite(led, LOW);
    digitalWrite(relay, LOW);
    noTone(buzzer); // Matikan buzzer
  }

  // Cetak data kelembapan dan suhu
  Serial.println(F("Kelembapan: "));
  Serial.print(k);
  Serial.print(F("%  Suhu: "));
  Serial.print(s);
  Serial.println(F("°C "));
  
  delay(2000);
}