//-------------------------------------------------------------------
void setup() {
  pinMode(4, INPUT);
  pinMode(7, INPUT);

  Serial.begin(115200);
}

//-------------------------------------------------------------------
void loop() {
  //---
  Serial.print("Taste UP: ");
  Serial.print(digitalRead(4));

  Serial.print(", ");

  Serial.print("Taste DOWN: ");
  Serial.println(digitalRead(7));

  //---
  delay(100);
}