在c#中从串口读取数据

问题描述

我正在尝试从串行端口读取数据.数据来自规模.我首先发送一个命令开始读取秤.

I am trying to read data from the serial port. The data comes off of a scale. I first send a command to start reading the scale.

_serialPort.Write("P");

然后等待一段时间后，我尝试使用阅读

then after waiting for some time I am trying to read using

temp2 = _serialPort.ReadLine();

应用程序在这行代码处挂起.我也尝试了读取功能，但得到了相同的结果.ReadExisting() 函数返回一个空字符串.

The application hangs at this line of code. I have also tried the Read function but am getting the same result. ReadExisting() function returns an empty string.

由于 ReadLine() 没有超时或抛出任何异常，我无法调试此问题，因为我没有更多信息.由于 WriteLine() 和 ReadExisting() 正常工作，端口不会有缺陷.

As the ReadLine() is not timing out or throwing any exceptions I am unable to debug this issue as I have no further information. The port cannot be defective as WriteLine() and ReadExisting() are working.

任何帮助将不胜感激.

谢谢

推荐答案

在你的接收按钮后面试试这个:

Try this behind your recieve button:

string msg = serialObj.ReadExisting();
MessageBox.Show(msg);

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