unsigned long startMillis;
unsigned long currentMillis;
const unsigned long period = 5000; // Period during which button input is valid
const byte buttonPin1 = A1;        // Button on pin A1
byte currentButtonState;
byte previousButtonState = HIGH;  // Initialize to HIGH since the button is inactive by default
int count = 0;
boolean counting = true;

unsigned long debounceTime = 50;  // Debounce time in milliseconds
unsigned long lastDebounceTime = 0;  // Last time the button state changed

void setup()
{
  Serial.begin(115200);
  pinMode(buttonPin1, INPUT_PULLUP);
  Serial.println("Press the button as many times as possible in 5 seconds");
  startMillis = millis(); // Save the start time
}

void loop()
{
  currentMillis = millis();

  if (currentMillis - startMillis <= period) // Check if we're still within the 5-second period
  {
    int reading = digitalRead(buttonPin1);

    // If the button state changes, reset the debounce timer
    if (reading != previousButtonState)
    {
      lastDebounceTime = currentMillis;
    }

    // If the state remains stable for debounceTime, update the button state
    if ((currentMillis - lastDebounceTime) > debounceTime)
    {
      if (reading != currentButtonState)
      {
        currentButtonState = reading;

        // If the button becomes pressed (LOW state), increment the count
        if (currentButtonState == LOW)
        {
          count++;
          Serial.println(count);
        }
      }
    }

    // Update the previous button state
    previousButtonState = reading;
  }
  else // Period has ended
  {
    if (counting)
    {
      Serial.print("Time is up. Total count: ");
      Serial.println(count);
      counting = false; // Prevent displaying the message repeatedly
    }
  }
}