// Definición de pines
const int PIR_PIN = 2;   
const int BUZZER_PIN = 3; 
const int RED_PIN = 9;   
const int GREEN_PIN = 10; 
const int BLUE_PIN = 11;  

// Variables de estado
bool motionDetected = false; 
unsigned long lastMotionTime = 0; 
const unsigned long timeout = 3000; 

// Definición de tonos
const int toneHigh = 1000; // Tono alto
const int toneLow = 500;    // Tono bajo

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);
  Serial.begin(9600);
  
  deactivateAlarm();
}

void loop() {
  motionDetected = digitalRead(PIR_PIN); 

  if (motionDetected) {
    lastMotionTime = millis(); 
    activateAlarm();           
  } else if (millis() - lastMotionTime < timeout) {
    // No se hace nada, la alarma se mantiene desactivada
  } else {
    deactivateAlarm();         
  }
}

void activateAlarm() {
  for (int i = 0; i < 3; i++) {
    activateLED(RED_PIN, toneHigh);
    activateLED(GREEN_PIN, toneLow);
    activateLED(BLUE_PIN, 0); // Sin sonido
  }
}

void activateLED(int pin, int toneValue) {
  digitalWrite(pin, HIGH);
  if (toneValue > 0) {
    tone(BUZZER_PIN, toneValue); 
  }
  delay(500);
  digitalWrite(pin, LOW);
  noTone(BUZZER_PIN); // Asegurarse de que el buzzer esté apagado
}

void deactivateAlarm() {
  noTone(BUZZER_PIN); 
  digitalWrite(RED_PIN, LOW); 
  digitalWrite(GREEN_PIN, LOW); 
  digitalWrite(BLUE_PIN, LOW); 
}