ControllerTestFirmware2.ino

  // Print the Key packet
  // DPad
  Serial.print("K:");
  Serial.print(digitalRead(RIGHT));
  Serial.print(digitalRead(UP));
  Serial.print(digitalRead(LEFT));
  Serial.print(digitalRead(DOWN));
  
  // Action buttons
  Serial.print(digitalRead(A));
  Serial.print(digitalRead(B));
  Serial.print(digitalRead(X));
  Serial.println(digitalRead(Y));