BgApiDriver.BgApi.doOpen C# (CSharp) Method

        private void doOpen()
        {
            m_serialPort = new SerialPort(m_port, 256000, Parity.None, 8, StopBits.One);
            // register for data received events
            m_serialDataReceivedEventHandler = new SerialDataReceivedEventHandler(m_serialPort_DataReceived);
            m_serialPort.DataReceived += m_serialDataReceivedEventHandler;

            bool deviceFound = false;
            for (DateTime now = DateTime.Now; DateTime.Now - now < new TimeSpan(0, 0, 5); )
            {
                try
                {
                    m_serialPort.Open();
                    deviceFound = true;
                    break;
                }
                catch (IOException)
                {
                    Thread.Sleep(100);
                }
            }
            if (!deviceFound)
            {
                throw new BgApiException(string.Format("Cannot connect to device on port {0}", m_port));
            }
            m_stream = m_serialPort.BaseStream;
            m_rxOffset = 0;
        }