const int buttonPin = 5; 

int stadium = 0;     // current state of the button
int lastButtonState = 0; // previous state of the button
int startPressed = 0;    // the moment the button was pressed
int endPressed = 0;      // the moment the button was released
int holdTime = 0;        // how long the button was hold
int idleTime = 0;        // how long the button was idle


void setup() {
  // put your setup code here, to run once:
  pinMode(buttonPin, INPUT);
  Serial.begin(9600);
  buttonState = digitalRead(buttonPin); // read the button input

  if (buttonState != lastButtonState) { // button state changed
     updateS();
  }

  lastButtonState = buttonState;        // save state for next loop
}




/*void loop() {
  // put your main code here, to run repeatedly:


}
*/
void updateS(){
   startPressed = millis();
   if(stadium == LOW){
    
   }
}