C# 串行通信 - 接收数据丢失

发布于 2024-08-31 09:30:16 字数 642 浏览 10 评论 0原文

由于收集器数组被覆盖而不是附加，我的 C# 应用程序中接收到的数据正在丢失。

  char[] pUartData_c;

  private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
  {
     try
     {
        pUartData_c = serialPort1.ReadExisting().ToCharArray();
        bUartDataReady_c = true;
     }
     catch ( System.Exception ex )
     {
        MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
     }
  }

在此示例中，每次收到新数据时都会覆盖 pUartData_c。在某些系统上这不是问题，因为数据输入得足够快。然而，在其他系统上，接收缓冲区中的数据并不完整。如何将接收到的数据附加到 pUartData_c，而不是覆盖它。我正在使用 Microsoft Visual C# 2008 Express Edition。谢谢。

原文

Received data in my C# application is getting lost due to the collector array being over-written, rather than appended.

  char[] pUartData_c;

  private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
  {
     try
     {
        pUartData_c = serialPort1.ReadExisting().ToCharArray();
        bUartDataReady_c = true;
     }
     catch ( System.Exception ex )
     {
        MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
     }
  }

In this example pUartData_c is over-written every time new data is received. On some systems this is not a problem because the data comes in quickly enough. However, on other systems data in the receive buffer is not complete. How can I append received data to pUartData_c, rather than over-write it. I am using Microsoft Visual C# 2008 Express Edition. Thanks.

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淡墨 2024-09-07 09:30:16

private SerialPort sp;
private List<byte> byte_buffer = new List<byte>();    

private void sp_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
   byte_buffer.Clear();

   while (sp.BytesToRead > 0)
   {
      byte_buffer.Add((byte)sp.ReadByte());
   }
}

private SerialPort sp;
private List<byte> byte_buffer = new List<byte>();    

private void sp_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
   byte_buffer.Clear();

   while (sp.BytesToRead > 0)
   {
      byte_buffer.Add((byte)sp.ReadByte());
   }
}

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