多个SerialPort实时返回

我在C＃中创建了一个数据记录应用程序 . 它通过SerialPort类连接到4个USB传感器 . 我在每个字节上触发了数据接收事件阈值 . 收到数据后，程序会检查该字节是否为行尾 . 如果不是，则将输入添加到缓冲区 . 如果是行结束，程序会添加时间戳并将数据和时间戳写入文件（每个输入源都会获得一个专用文件） .

使用多个COM端口输入时出现问题 . 我在输出文件中看到的是：

4个文件中的任何一个：

...
timestamp1 value1
timestamp2 value2
timestamp3 value3
value4
value5
value6
timestamp7 value7
...

所以，它看起来是计算机速度不够快，无法在下一个值到达之前获得所有4个中断 . 我有充分的理由相信这是罪魁祸首，因为有时我会看到这样的输出：

...
timestamp value
timestamp value
value
val
timestamp ue
timestamp value
...

这可能是由于我将处理器关联性更改为仅在Core 2上运行 . 我这样做是因为我使用的时间戳是用处理器周期计算的，所以我不能有多个时间参考，具体取决于哪个核心是运行 . 我在下面放了一些代码片段;任何可能有助于删除时间戳的建议将不胜感激！

public mainLoggerIO()
    {
        //bind to one cpu
        Process proc = Process.GetCurrentProcess();
        long AffinityMask = (long)proc.ProcessorAffinity;
        AffinityMask &= 0x0002; //use only the 2nd processor
        proc.ProcessorAffinity = (IntPtr)AffinityMask;

        //prevent any other threads from using core 2
        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
        Thread.CurrentThread.Priority = ThreadPriority.Highest;

        long frequency = Stopwatch.Frequency;
        Console.WriteLine("  Timer frequency in ticks per second = {0}",
            frequency);
        long nanosecPerTick = (1000L * 1000L * 1000L) / frequency;
        Console.WriteLine("  Timer is accurate within {0} nanoseconds",
            nanosecPerTick);

        if (Stopwatch.IsHighResolution)
            MessageBox.Show("High Resolution Timer Available");
        else
            MessageBox.Show("No High Resolution Timer Available on this Machine");

        InitializeComponent();
    }

等等 . 每个数据返回中断如下所示：

private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
    {
        //serialPort1.DataReceived = serialPort1_DataReceived;
        rawPort1Data = "";
        rawPort1Data = serialPort1.ReadExisting();
        this.Invoke((MethodInvoker)delegate { returnTextPort1(); });
    }

returnTextPort＃（）方法是：

private void returnTextPort1()
    {
        if (string.Compare(saveFileName, "") == 0)//no savefile specified
            return;
        bufferedString += rawPort1Data;
        if(bufferedString.Contains('\r')){
            long timeStamp = DateTime.Now.Ticks;
            textBox2.AppendText(nicknames[0] + " " + timeStamp / 10000 + ", " + rawPort1Data);
            //write to file
            using (System.IO.StreamWriter file = new System.IO.StreamWriter(@saveFileName, true))
            {
                 file.WriteLine(nicknames[0] + " " + timeStamp / 10000 + ", " + rawPort1Data);//in Ms
            }
            bufferedString = "";
        }

    }