#define BUTTON 0

 #define BUTTON 0

void setup() {

  pinMode(BUTTON, INPUT_PULLUP);

  Serial.begin(115200);

  // Header para Excel

  Serial.println("Time,Button");

}

void loop() {

  int buttonState = digitalRead(BUTTON);

  unsigned long time = millis();

  Serial.print(time);

  Serial.print(",");

  Serial.println(buttonState);

  delay(1000);

}