CSharp串口通信

using System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO.Ports;namespace SerialPorts{public partial class frm_Main : Form{#region Public Enumerationspublic enum DataMode { Text, Hex }public enum LogMsgType { Incoming, Outgoing, Normal, Warning, Error };#endregionprivate Color[] LogMsgTypeColor = { Color.Orange, Color.Green, Color.Black, Color.Blue, Color.Red }; //禁用和启用程序中各控件的状态private void EnableControls(){// 基于串口的打开与否，设置控件状态gbPortSettings.Enabled = !ComPort.IsOpen;btns.Enabled = btnstop.Enabled = txtSendData.Enabled = btnSend.Enabled = ComPort.IsOpen;if (ComPort.IsOpen) btnOpenPort.Text = "关闭串口";else btnOpenPort.Text = "打开串口";}//初始化组件的数据，为串口提供相关参数private void InitializeControlValues(){cmbParity.Items.Clear(); cmbParity.Items.AddRange(Enum.GetNames(typeof(Parity)));cmbStopBits.Items.Clear(); cmbStopBits.Items.AddRange(Enum.GetNames(typeof(StopBits)));cmbPortName.Items.Clear();foreach (string s in SerialPort.GetPortNames())cmbPortName.Items.Add(s);cmbPortName.Text = cmbPortName.Items[0].ToString();cmbParity.Text = cmbParity.Items[0].ToString();cmbStopBits.Text = cmbStopBits.Items[0].ToString();cmbDataBits.Text = cmbDataBits.Items[0].ToString();cmbParity.Text = cmbParity.Items[0].ToString();cmbBaudRate.Text = cmbBaudRate.Items[0].ToString();EnableControls();}//十六进制转换字节数组private byte[] HexStringToByteArray(string s){s = s.Replace(" ", "");byte[] buffer = new byte[s.Length / 2];for (int i = 0; i < s.Length; i += 2)buffer[i / 2] = (byte)Convert.ToByte(s.Substring(i, 2), 16);return buffer;}//字节数组转换十六进制private string ByteArrayToHexString(byte[] data){StringBuilder sb = new StringBuilder(data.Length * 3);foreach (byte b in data)sb.Append(Convert.ToString(b, 16).PadLeft(2, '0').PadRight(3, ' '));return sb.ToString().ToUpper();}//显示数据日志private void Log(LogMsgType msgtype, string msg){rtfTerminal.Invoke(new EventHandler(delegate{rtfTerminal.SelectedText = string.Empty;rtfTerminal.SelectionFont = new Font(rtfTerminal.SelectionFont, FontStyle.Bold); rtfTerminal.SelectionColor = LogMsgTypeColor[(int)msgtype];rtfTerminal.AppendText(msg);rtfTerminal.ScrollToCaret();}));}//串口发送方式#region Local Propertiesprivate DataMode CurrentDataMode{get{if (rbHex.Checked) return DataMode.Hex;else return DataMode.Text;}set{if (value == DataMode.Text) rbText.Checked = true;else rbHex.Checked = true;}}#endregion//发送数据private void SendData(){if (CurrentDataMode == DataMode.Text){// 发送用户的文本到串口ComPort.Write(txtSendData.Text);// 将用户的文本显示到数据窗口Log(LogMsgType.Outgoing, txtSendData.Text + "\n");}else{try{// 转换用户十六进制数据到字节数组byte[] data = HexStringToByteArray(txtSendData.Text);// 发送数据到串口ComPort.Write(data, 0, data.Length);// 将用户十六进制数据到数据窗口Log(LogMsgType.Outgoing, ByteArrayToHexString(data) + "\n");}catch (FormatException){// 转换错误Log(LogMsgType.Error, "十六进制数据有误: " + txtSendData.Text + "\n");}}txtSendData.SelectAll();}/// <summary>/// -------------------------------------------------------------/// </summary>public frm_Main(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){InitializeControlValues();ComPort.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); }//打开串口private void btnOpenPort_Click(object sender, EventArgs e){if (ComPort.IsOpen) ComPort.Close();else{//设置串口参数ComPort.BaudRate = int.Parse(cmbBaudRate.Text);ComPort.DataBits = int.Parse(cmbDataBits.Text);ComPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmbStopBits.Text); ComPort.Parity = (Parity)Enum.Parse(typeof(Parity), cmbParity.Text);ComPort.PortName = cmbPortName.Text;// 打开串口ComPort.Open();}// 改变组件状态EnableControls();// 如果串口打开，将焦点放入txtSendDataif (ComPort.IsOpen) txtSendData.Focus();}private void rbHex_CheckedChanged(object sender, EventArgs e){if (rbHex.Checked) CurrentDataMode = DataMode.Hex;}private void rbText_CheckedChanged(object sender, EventArgs e){if (rbText.Checked) CurrentDataMode = DataMode.Text;}//接收数据private void port_DataReceived(object sender, SerialDataReceivedEventArgs e){// 判断用户用的是字节模式还是字符模式if (CurrentDataMode == DataMode.Text){// 读取缓冲区的数据string data = ComPort.ReadExisting();// 显示读取的数据到数据窗口Log(LogMsgType.Incoming, data + "\n");}else{// 获取字节长度int bytes = ComPort.BytesToRead;// 创建字节数组byte[] buffer = new byte[bytes];// 读取缓冲区的数据到数组ComPort.Read(buffer, 0, bytes);// 显示读取的数据到数据窗口Log(LogMsgType.Incoming, ByteArrayToHexString(buffer) + "\n");}}//发送数据按键private void btnSend_Click(object sender, EventArgs e){SendData();}private void lnkAbout_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) {(new frmAbout()).ShowDialog(this);}//时间组件控制发送数据private void timer1_Tick(object sender, EventArgs e){SendData();}//连续发送数据private void button1_Click(object sender, EventArgs e){delay.Enabled = true;btns.Enabled = !delay.Enabled;btnstop.Enabled = delay.Enabled;}//停止连续发送数据private void button2_Click(object sender, EventArgs e){delay.Enabled = false;btns.Enabled = !delay.Enabled;btnstop.Enabled = delay.Enabled;}}}。