startSerial method

@override Stream<SerialResponse> startSerial()

Once this method is called, Operations like openPort,closePort etc... result will be return from this stream Providing InputStream and OutputStream startSerial : return type SerialResponse

Implementation

@override
Stream<SerialResponse> startSerial() {
  Stream<SerialResponse> data = eventChannel.receiveBroadcastStream().map(
      (dynamic result) =>
          SerialResponse.fromMap(Map<String, String>.from(result)));

  return data;
}