基于多串口ETH005设备的Socket网络编程

利用多串口设备进行Socket网络编程

1、安装多串口服务器ETH005软件。软件下载地址：http://download.csdn.net/detail/taomanman/6762173

2、打开ETH005软件，点击“扫描”，如下图：

3、会搜索到设备的IP地址，修改串口COM1的串口波特率为9600，通讯方式修改为485通信，远程IP修改成192.168.0.2，然后点击“连接”，如下图：

4、连接完成后，点击“配置”，如下图：

5、点击“读取配置信息”，如下图：

6、打开串口调试助手，配置远程主机和远程端口号信息，然后连接网络，然后输入十六进制数，然后发送，接收区会将结果输出，如下图：

开始编程：使用Socket进行网络编程，发送指令，获取数据

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1、             建立Socket连接

Socket newclient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ie = new IPEndPoint(IPAddress.Parse("192.168.0.18"), 50001);
try
{
     newclient.Connect(ie);
}
 catch (SocketException e)
{

     MessageBox.Show("连接服务器失败：" + e.Message);
     return;
}
ThreadStart myThreaddelegate = new ThreadStart(ReceiveMsg);
myThread = new Thread(myThreaddelegate);
myThread.Start();

2、             发送指令

///<summary>
///发送温湿度数据
///</summary>
public void SendWSD()
{
    string wsd = "01 03 00 00 00 03 05 cb";
    int m_length = wsd.Length;
    byte[] data = new byte[m_length];
    //十六进制字符串转换成字符数组（01 03 00 00 00 03 05 cb）
    data = ConvertHelper.strToToHexByte(wsd);
    int i = newclient.Send(data, data.Length, 0);
    //showMsg("温湿度发送消息为：" + wsd + "\r\n");
}

 
public static class ConvertHelper
{

    ///<summary>   
    /// 16进制字符串转字节数组   
    ///</summary>   
   ///<param name="hexString"></param>   
   ///<returns></returns>   
    public static byte[] strToToHexByte(string hexString)
    {

        hexString = hexString.Replace(" ", "");
        if ((hexString.Length % 2) != 0)
           hexString += " ";
        byte[] returnBytes = new byte[hexString.Length / 2];
        for (int i = 0; i < returnBytes.Length; i++)
            returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2).Trim(), 16);
        return returnBytes;
   }

 
    ///<summary>   
    ///字节数组转16进制字符串   
     ///</summary>   
    ///<param name="bytes"></param>   
    ///<returns></returns>   
     public static string byteToHexStr(byte[] bytes)
     {

        string returnStr = "";
        if (bytes != null)
        {
             for (int i = 0; i < bytes.Length; i++)
             {
                 returnStr += bytes[i].ToString("X2");
             }
        }
        return returnStr;
    }

 

    ///<summary>
    ///十六进制转十进制
    ///</summary>
   ///<param name="hex"></param>
   ///<returns></returns>
    public static string Hex2Ten(string hex)
    {
        int ten = 0;
        for (int i = 0, j = hex.Length - 1; i < hex.Length; i++)
        {
            ten += HexChar2Value(hex.Substring(i, 1)) * ((int)Math.Pow(16, j));
            j--;
        }
        return ten.ToString();
    }
}

3、             接收数据

  ///<summary>
  ///接收消息
  ///</summary>
  public void ReceiveMsg()
  {
    while (true)
    {
        byte[] data = new byte[1024];
        int recv = newclient.Receive(data);
        string stringdata = Encoding.UTF8.GetString(data, 0, recv);
        //将所读取的字符串转换为字节数组
        byte[] content = Encoding.ASCII.GetBytes(stringdata);
        if (recv <= 0)
               break;
        string hexString = ConvertHelper.byteToHexStr(content);
        string sd = hexString.Substring(6, 4);
        string wd = hexString.Substring(10, 4);
       //showMsg("温湿度接收到的返回值串为：" + hexString + "\r\n");
        //处理后的温湿度数值
        double csd = double.Parse(ConvertHelper.Hex2Ten(sd)) / 100;
        double cwd = (double.Parse(ConvertHelper.Hex2Ten(wd)) - 27315) / 100;
        showMsg("湿度值为：" + csd + "% 采集时间：[" + System.DateTime.Now.ToString("yyyy-MM-dd HH:mm") + "]\r\n");
        showMsg("温度值为：" + cwd + "℃ 采集时间：[" + System.DateTime.Now.ToString("yyyy-MM-dd HH:mm") + "]\r\n");
     }
  }

 

    ///<summary>
    ///显示消息
    ///</summary>
   ///<param name="msg"></param>
   public void showMsg(string msg)
   {
      {
          //在线程里以安全方式调用控件
           if (receiveMsg.InvokeRequired)
           {
                MyInvoke _myinvoke = new MyInvoke(showMsg);
                receiveMsg.Invoke(_myinvoke, new object[] { msg });
            }
            else
            {
                receiveMsg.AppendText(msg);
            }
       }
  }