將多個串行端口同時記錄到多個文件

Question

我在寫一個C＃程序，它將同時從多個串行端口讀取數據並將該數據記錄到文件中。每個端口都有它自己的專用文件來寫入。

我能夠用一個端口成功創建一個類，但是當我嘗試使用兩個端口執行操作時，只有第二個打開的端口有任何寫入該文件的數據。

下面是我寫來處理數據從串口接收到的事件，並寫入到文件類：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading; 
using System.IO; 
using System.IO.Ports; 

namespace Shell 
{ 
    public class Shell 
    { 
     private string port_name; 

     static SerialPort port; 
     static FileStream fs; 
     static StreamWriter stream; 

     /*------------------------------------------------------ 
     Constructors can be added as needed to take 
     additional inputs for more flexibility. 
     ------------------------------------------------------*/ 
     public Shell(string name) 
     { 
      port = new SerialPort(); 

      port_name = name; 

      port.PortName = name; 
      port.BaudRate = 115200; 
      port.Parity = Parity.None; 
      port.DataBits = 8; 
      port.StopBits = StopBits.One; 
      port.Handshake = Handshake.None; 
      port.Encoding = Encoding.UTF8; 
     } 

     /*------------------------------------------------------ 
     Close the serial port and file. 
     ------------------------------------------------------*/ 
     public void close() 
     { 
      if (port.IsOpen) 
      { 
       port.DataReceived -= port_DataReceived; 
       port.Close(); 
       stream.Dispose(); 
       fs.Close(); 
      } 
     } 

     /*------------------------------------------------------ 
     Add the serial data received handler, open the file to 
     log to, and open the serial port. 
     ------------------------------------------------------*/ 
     public void open(string path) 
     { 
      if (!port.IsOpen) 
      { 
       fs = File.Open(path, FileMode.Create, FileAccess.ReadWrite); 
       stream = new StreamWriter(fs); 
       stream.AutoFlush = true; 
       stream.WriteLine("Start"); 
       port.DataReceived += port_DataReceived; 
       port.Open(); 
      } 
     } 

     /*------------------------------------------------------ 
     Handler for the serial data events. 
     ------------------------------------------------------*/ 
     void port_DataReceived(object sender, SerialDataReceivedEventArgs e) 
     { 
      string data = port.ReadExisting(); 
      if (!string.IsNullOrEmpty(data)) 
      { 
        stream.Write(data); 
      } 
     } 
    } 
} 

這裏是從簡單的形式我用來打開和關閉的代碼連接：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Windows.Forms; 

namespace shell_log_test 
{ 
    public partial class Form1 : Form 
    { 
     private Shell.Shell port1; 
     private Shell.Shell port2; 

     public Form1() 
     { 
      InitializeComponent(); 
     } 

     private void button1_Click(object sender, EventArgs e) 
     { 
      port2 = new Shell.Shell("COM5"); 
      port2.open("port2.log"); 
      port1 = new Shell.Shell("COM12"); 
      port1.open("port1.log"); 
     } 

     private void button2_Click(object sender, EventArgs e) 
     { 
      port1.close(); 
      port2.close(); 
     } 
    } 
} 

預先感謝您的幫助。

Answer 1

更改如下：

static SerialPort port; 
static FileStream fs; 
static StreamWriter stream; 

到：

private SerialPort port; 
private FileStream fs; 
private StreamWriter stream;