void setup() {
  Serial.begin(115200);
  Serial.print("GCC Version: ");
  Serial.print(__GNUC__);
  Serial.print(".");
  Serial.print(__GNUC_MINOR__);
  Serial.print(".");
  Serial.print(__GNUC_PATCHLEVEL__);
  Serial.println();
}

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

}