open method

@override Future<bool> open()

打开串口

Implementation

@override
Future<bool> open() {
  return Future(() {
    port?.openWithSettings(
        BaudRate: baudRate,
        ByteSize: dataBits,
        ReadIntervalTimeout: readIntervalTimeout,
        Parity: parity,
        StopBits: stopBits);
    var result = port?.isOpened;
    return result??false;
  });
}