Question

不确定如何处理SerialPort DataReceived。方案

我有一个与设备通信的应用程序，该设备返回状态。这发生在不同的阶段EG

public enum ActionState { 开始，进行中，已完成等等... }

现在，如果我要使用DataReceivedEventHandler，我怎么知道Method正在执行什么？例如Action1或Action2等......？我还希望在从设备中获取内容时包含某种超时。任何例子或建议？

    public ActionState Action1
    {
        serialPort.write(myData);
        string result=serialPort.ReadExisting());


        //convertTo ActionState and return
         return ConvertToActionState(result);
    }

    public ActionState Action2
    {
        serialPort.write(myData);
        string result=serialPort.ReadExisting());

        //convertTo ActionState and return
         return ConvertToActionState(result);
    }


    private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
      //How can I use this to detect which method is firing and set the actionState Enum accordingly?
    }

    private ActionState(string result)
    {
       if(result==1)
          return ActionState.Started;
       else if (result==2)
          return ActionState.Completed

      etc...

    }

Answer 1

当有一些数据要读取时，事件DataReceived由串口触发，甚至收到Eof字符。 Tipicaly此事件用于获取数据并使用它或存储启动进程。例如，serialport读取条形码并在数据库中找到它。

private static void DataReceivedHandler(
                    object sender,
                    SerialDataReceivedEventArgs e)
{
    SerialPort sp = (SerialPort)sender;
    string indata = sp.ReadExisting();
    if(!String.IsEmptyOrNull( indata)) 
    {
        AddProductToCart(indata);
    }
}

如何使用SerialPort SerialDataReceived帮助

1 个答案: