在C#中,使用串口通信时,可能会遇到各种异常情况。为了确保程序的稳定性和可靠性,我们需要对可能出现的异常进行处理,并记录相关日志。以下是一个简单的C#串口类,包含异常处理和日志记录功能:
using System;
using System.IO.Ports;
using System.Text;
public class SerialPortHelper
{
private SerialPort _serialPort;
private string _portName;
private int _baudRate;
private Parity _parity;
private int _dataBits;
private StopBits _stopBits;
public SerialPortHelper(string portName, int baudRate, Parity parity, int dataBits, StopBits stopBits)
{
_portName = portName;
_baudRate = baudRate;
_parity = parity;
_dataBits = dataBits;
_stopBits = stopBits;
}
public void Open()
{
try
{
_serialPort = new SerialPort(_portName, _baudRate, _parity, _dataBits, _stopBits);
_serialPort.Open();
Log("Serial port opened successfully.");
}
catch (Exception ex)
{
Log($"Error opening serial port: {ex.Message}");
}
}
public void Close()
{
try
{
if (_serialPort != null && _serialPort.IsOpen)
{
_serialPort.Close();
Log("Serial port closed successfully.");
}
}
catch (Exception ex)
{
Log($"Error closing serial port: {ex.Message}");
}
}
public void Write(string data)
{
try
{
if (_serialPort != null && _serialPort.IsOpen)
{
_serialPort.Write(data);
Log($"Data sent: {data}");
}
}
catch (Exception ex)
{
Log($"Error sending data: {ex.Message}");
}
}
public string Read()
{
try
{
if (_serialPort != null && _serialPort.IsOpen)
{
string data = _serialPort.ReadLine();
Log($"Data received: {data}");
return data;
}
}
catch (Exception ex)
{
Log($"Error receiving data: {ex.Message}");
}
return null;
}
private void Log(string message)
{
Console.WriteLine($"[{DateTime.Now}] {message}");
}
}
在这个类中,我们使用了try-catch
语句来捕获可能出现的异常,并在Log
方法中记录日志。这样,我们可以在控制台或者其他地方查看到详细的日志信息,以便于分析和调试。
使用这个类的示例代码如下:
class Program
{
static void Main(string[] args)
{
SerialPortHelper serialPortHelper = new SerialPortHelper("COM1", 9600, Parity.None, 8, StopBits.One);
serialPortHelper.Open();
serialPortHelper.Write("Hello, World!");
string response = serialPortHelper.Read();
serialPortHelper.Close();
}
}
这个示例代码创建了一个SerialPortHelper
实例,连接到COM1端口,波特率为9600,无奇偶校验,8个数据位,1个停止位。然后发送一条消息,并接收响应,最后关闭串口。在整个过程中,所有的操作都会被记录到日志中。