#include <DHT.h>

#define DHTPIN 4
#define DHTTYPE DHT22

#define arus1Pin 34
#define arus2Pin 35
#define relayPin 26
#define buzzerPin 27

DHT dht(DHTPIN, DHTTYPE);

// SET POINT
float setArus = 0.3;   // 300 mA
float setSuhu = 50;    

// toleransi error sensor
float toleransi = 0.1;

void setup() {
  Serial.begin(115200);
  dht.begin();

  pinMode(relayPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);

  digitalWrite(relayPin, HIGH);
  digitalWrite(buzzerPin, LOW);
}

void loop() {

  // ====== SENSOR ARUS ======
  float arus1 = (analogRead(arus1Pin) / 4095.0) * 1.0;
  float arus2 = (analogRead(arus2Pin) / 4095.0) * 1.0;

  float selisih = abs(arus1 - arus2);

  // ====== SUHU ======
  float suhu = dht.readTemperature();

  // ====== TAMPILKAN ======
  Serial.print("Arus1: "); Serial.print(arus1);
  Serial.print(" | Arus2: "); Serial.print(arus2);
  Serial.print(" | Selisih: "); Serial.print(selisih);
  Serial.print(" | Suhu: "); Serial.println(suhu);

  // ====== LOGIKA ======
  if (selisih > toleransi) {
    // SENSOR ERROR
    digitalWrite(relayPin, LOW);
    digitalWrite(buzzerPin, HIGH);
    Serial.println("❌ SENSOR ERROR!");
  }
  else if (arus1 > setArus || arus2 > setArus || suhu > setSuhu) {
    // TRIP
    digitalWrite(relayPin, LOW);
    digitalWrite(buzzerPin, HIGH);
    Serial.println("⚠️ TRIP GANGGUAN!");
  }
  else {
    // NORMAL
    digitalWrite(relayPin, HIGH);
    digitalWrite(buzzerPin, LOW);
    Serial.println("✅ NORMAL");
  }

  delay(2000);
}