硬件采用的是“有人公司”的串口转wifi模块。该模块可以实现串口透传。
软件如下
硬件模块设置为 TCP Server
using System; using System.Windows.Forms; using System.IO.Ports; using System.IO; using System.Net; using System.Net.Sockets; using System.Threading; using System.Text; namespace Socket串口 { public partial class FrmMain : Form { public FrmMain() { InitializeComponent(); } /// <summary> /// 打开软件加载项目 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void FrmMain_Load(object sender, EventArgs e) { SerialPort();//加载系统当前可用的串口 Control.CheckForIllegalCrossThreadCalls = false; } #region 串口部分 #region 定义变量 SerialPort sp = new SerialPort(); bool isOpen = false;//打开串口标志位 #endregion /// <summary> /// 加载当前系统当中可用的串口 /// </summary> void SerialPort() { string[] ports = System.IO.Ports.SerialPort.GetPortNames(); if (ports == null) { MessageBox.Show("本机没有串口！"); } foreach (string port in System.IO.Ports.SerialPort.GetPortNames()) { cbx_Port.Items.Add(port); } //添加波特率 cbx_Baude_Rate.Items.Add("1200"); cbx_Baude_Rate.Items.Add("2400"); cbx_Baude_Rate.Items.Add("4800"); cbx_Baude_Rate.Items.Add("9600"); cbx_Baude_Rate.Items.Add("19200"); cbx_Baude_Rate.Items.Add("38400"); cbx_Baude_Rate.Items.Add("43000"); cbx_Baude_Rate.Items.Add("56000"); cbx_Baude_Rate.Items.Add("57600"); cbx_Baude_Rate.Items.Add("115200"); cbx_Baude_Rate.SelectedIndex = 3; cbx_Port.SelectedIndex = 0; } #region 打开和关闭串口资源 private void SetPortProperty() { sp.PortName = cbx_Port.Text.Trim(); sp.BaudRate = Convert.ToInt32(cbx_Baude_Rate.Text.Trim()); sp.StopBits = StopBits.One; sp.DataBits = Convert.ToInt16(8); sp.Parity = Parity.None; sp.ReadTimeout = -1;//超读时间 sp.RtsEnable = true; //定义一个串口接受数据 触发事件 sp.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived); } void openSerialPort() { try { sp.Open(); } catch { MessageBox.Show("打开失败！"); } } void closeSerialPort() { try { sp.Close(); } catch { MessageBox.Show("关闭失败！"); } } private void btn_Open_Port_Click(object sender, EventArgs e) { if (isOpen == false) { SetPortProperty(); openSerialPort(); isOpen = true; } } /// <summary> /// 串口接收字符事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void sp_DataReceived(object sender, SerialDataReceivedEventArgs e) { string ReadStr = ""; ReadStr = sp.ReadExisting(); Show_Port_Msg(socketSend.RemoteEndPoint + ":" + ReadStr); } void Show_Port_Msg(string str) { if(txt_Port_Recv.TextLength>300) { txt_Port_Recv.Clear(); } txt_Port_Recv.AppendText(str + " "); } private void btn_Close_Port_Click(object sender, EventArgs e) { if (isOpen == true) { closeSerialPort(); isOpen = true; sp.Dispose(); } } #endregion /// <summary> /// 在串口接收窗口显示当前接收到的数据 /// </summary> /// <param name="a">接收到的具体数据</param> public void ShowTxt(string a) { this.txt_Port_Recv.AppendText(DateTime.Now.ToString() + " | " + a + " "); if (txt_Port_Recv.TextLength > 300) { txt_Port_Recv.Clear(); } } #region 发送窗口是否有数据 bool类型 CheckSendData() private bool CheckSendData()//检查发送数据窗口是否有数据 { if (txt_Port_Send.Text.Trim() == "") return false; return true; } private void btn_Com_Port_Send_Click(object sender, EventArgs e) { try { if (isOpen) { string str = txt_Port_Send.Text.Trim(); byte[] buffer = System.Text.Encoding.UTF8.GetBytes(str); sp.WriteLine(str); } else { MessageBox.Show("请打开串口！"); } } catch { } } #endregion #region 发送串口数据 btn_Send_Click事件 private void btnSend_Click(object sender, EventArgs e)//发送串口数据 { if (isOpen)//写串口数据 { if (!CheckSendData())//检测要发送的数据 { MessageBox.Show("请输入要发送的数据！", "错误提示"); return; } else { try { sp.WriteLine(txt_Port_Send.Text.Trim()); } catch (Exception) { MessageBox.Show("发送数据时发生错误！", "错误提示"); return; } } } else { MessageBox.Show("串口未打开！", "错误提示"); return; } } #endregion #endregion #region socket部分 #region Socket相关的定义变量 Socket socketSend; #endregion /// <summary> /// Socket发送数据 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_Send_Click(object sender, EventArgs e) { string str = txt_Socket_Send.Text.Trim(); byte[] buffer = System.Text.Encoding.UTF8.GetBytes(str); socketSend.Send(buffer); } /// <summary> /// 建立Socket连接 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_Start_Click(object sender, EventArgs e) { try { socketSend = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IPAddress ip = IPAddress.Parse(txt_IP.Text); IPEndPoint point=new IPEndPoint(ip,Convert.ToInt32(txt_Port.Text.Trim())); socketSend.Connect(point); ShowMsg("连接成功！"); Thread th=new Thread(Recive); th.IsBackground=true; th.Start(); } catch { } } void ShowMsg(string str) { if (txt_Socket_Reccv.TextLength>300) { txt_Socket_Reccv.Clear(); } txt_Socket_Reccv.AppendText(str + " "); } /// <summary> /// 不停的接受服务器发来的消息 /// </summary> void Recive() { while (true) { try { byte[] buffer = new byte[1024 * 1024 * 3]; int r = socketSend.Receive(buffer); //实际接收到的有效字节数 if (r == 0) { break; } string s = Encoding.UTF8.GetString(buffer, 0, r); ShowMsg(socketSend.RemoteEndPoint + ":" + s); } catch { } } } #endregion } }
最后实现了