enum InterruptPins {
  INT_PIN_1 = 3,
  INT_PIN_2 = 18
};

const byte debounceDelay = 250;

volatile bool flag[2] = {false, false};
unsigned long lastDebounceTime[2] = {0, 0};

// Protótipos de função
void callISR(InterruptPins pin);
void handleISR(InterruptPins pin);
void ISR(InterruptPins pin);

void setup() {
  Serial.begin(9600);
  pinMode(INT_PIN_1, INPUT_PULLUP);
  pinMode(INT_PIN_2, INPUT_PULLUP);

  attachInterrupt(digitalPinToInterrupt(INT_PIN_1), []() { ISR(INT_PIN_1); }, RISING);
  attachInterrupt(digitalPinToInterrupt(INT_PIN_2), []() { ISR(INT_PIN_2); }, RISING);
}

void loop() {
  handleISR(INT_PIN_1);
  handleISR(INT_PIN_2);
}

void callISR(InterruptPins pin) {
  switch (pin) {
    case INT_PIN_1:
      Serial.println("ISR1");
      break;
    case INT_PIN_2:
      Serial.println("ISR2");
      break;
  }
}

void handleISR(InterruptPins pin) {
  int index = static_cast<int>(pin) - INT_PIN_1;
  if (flag[index] && (millis() - lastDebounceTime[index] > debounceDelay)) {
    callISR(pin);
    lastDebounceTime[index] = millis();
    flag[index] = false;
  }
}

void ISR(InterruptPins pin) {
  int index = static_cast<int>(pin) - INT_PIN_1;
  flag[index] = true;
}