#include <OneWire.h>
#include <DallasTemperature.h>

// OneWire bus masing-masing sensor
OneWire oneWireA(7);
OneWire oneWireB(8);
OneWire oneWireC(9);

// DallasTemperature untuk tiap sensor
DallasTemperature sensorA(&oneWireA);
DallasTemperature sensorB(&oneWireB);
DallasTemperature sensorC(&oneWireC);

// LED Sensor A
const int LED_A_HIJAU  = 2;
const int LED_A_KUNING = 3;
const int LED_A_MERAH  = 4;

// LED Sensor B
const int LED_B_HIJAU  = 5;
const int LED_B_KUNING = 6;
const int LED_B_MERAH  = 10;

// LED Sensor C
const int LED_C_HIJAU  = 11;
const int LED_C_KUNING = 12;
const int LED_C_MERAH  = 13;

void setup() {
  Serial.begin(9600); // Ganti ke 9600 untuk komunikasi ke ESP32
  sensorA.begin();
  sensorB.begin();
  sensorC.begin();

  int allLED[] = {
    LED_A_HIJAU, LED_A_KUNING, LED_A_MERAH,
    LED_B_HIJAU, LED_B_KUNING, LED_B_MERAH,
    LED_C_HIJAU, LED_C_KUNING, LED_C_MERAH
  };

  for (int i = 0; i < 9; i++) {
    pinMode(allLED[i], OUTPUT);
    digitalWrite(allLED[i], LOW);
  }

  Serial.println("Sensor suhu DS18B20 siap...");
}

void kontrolLED(float suhu, int ledHijau, int ledKuning, int ledMerah) {
  // Semua LED awalnya mati (HIGH aktif low)
  digitalWrite(ledHijau, HIGH);
  digitalWrite(ledKuning, HIGH);
  digitalWrite(ledMerah, HIGH);

  if (suhu < 20) {
    digitalWrite(ledHijau, LOW);
  } else if (suhu >= 20 && suhu < 75) {
    digitalWrite(ledKuning, LOW);
  } else if (suhu >= 75) {
    digitalWrite(ledMerah, LOW);
  }
}

void loop() {
  sensorA.requestTemperatures();
  sensorB.requestTemperatures();
  sensorC.requestTemperatures();

  float suhuA = sensorA.getTempCByIndex(0);
  float suhuB = sensorB.getTempCByIndex(0);
  float suhuC = sensorC.getTempCByIndex(0);

  // Tampilkan ke Serial Monitor
  Serial.print("Suhu A: "); Serial.print(suhuA);
  Serial.print(" | Suhu B: "); Serial.print(suhuB);
  Serial.print(" | Suhu C: "); Serial.println(suhuC);

  // Kirim ke ESP32 (format CSV)
  Serial.print(suhuA); Serial.print(",");
  Serial.print(suhuB); Serial.print(",");
  Serial.println(suhuC); // gunakan println untuk tanda akhir baris

  // Kontrol LED
  kontrolLED(suhuA, LED_A_HIJAU, LED_A_KUNING, LED_A_MERAH);
  kontrolLED(suhuB, LED_B_HIJAU, LED_B_KUNING, LED_B_MERAH);
  kontrolLED(suhuC, LED_C_HIJAU, LED_C_KUNING, LED_C_MERAH);

  delay(2000);
}