Arduino-digitalReadFromButton

// Maple Lead Mini
// Uses pulldown on input. 
// Waits for serial connection. 

const int inPin = 22;
int val;

void setup() {
  // put your setup code here, to run once:
  pinMode(inPin, INPUT_PULLDOWN);
  
  Serial.begin(9600);
  while(!Serial);
  Serial.println("Serial connected.");
}
void loop() {
  // put your main code here, to run repeatedly
  val = digitalRead(inPin);
  if (val) {
    Serial.println("");
    Serial.println("Button press detected");
  }
  else {
    Serial.print(".");
  }
  delay(100);
}