volatile uint32_t count = 0;  // Holds the count of interrupts

void incrementCount() {
  count++;
}

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

  pinMode(2, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(2), incrementCount, RISING);
}

void loop() {
  noInterrupts(); // Disable interrupts to safely read count
  uint32_t currentCount = count;
  interrupts(); // Re-enable interrupts

  if (currentCount % 10 == 0) {
    Serial.print("Interrupt count: ");
    Serial.println(currentCount);
  }

  delay(100);
}