C#串口调试工具源代码
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.IO.Ports;using System.Text;using System.Threading;using System.Windows.Forms;using System.Timers;namespace SerialPortW{ public partial class SerialPortW : Form { SerialPort serialPort; System.Timers.Timer tmr; //定义委托SetTextCallback, 返回值是void，参数类型String delegate void SetTextCallback(String text); // 构造函数 public SerialPortW() { InitializeComponent(); } // Form_Load 事件，程序打开Form的时候触发 private void SerialPortW_Load(object sender, EventArgs e) { //这个类中我们不检查跨线程的调用是否合法 Control.CheckForIllegalCrossThreadCalls = false; portInit(); } private void portInit() { //获取串口 getAvailablePort(); //设置初始显示的值 comboBoxBaudRate.SelectedIndex = 16; comboBoxDataBits.SelectedIndex = 3; comboBoxParity.SelectedIndex = 0; comboBoxStop.SelectedIndex = 0; //按键不使能，只有open的时候，send才使能 buttonSend.Enabled = false; // 发送端默认发送字节 //TextBoxSend.Text = "abcdefghijklmnopqrstuvwxyz0123456789"; //定时器时间间隔, ms textBoxTimer.Text = "1000"; //初始化定时器 tmr = new System.Timers.Timer(); // 这里只需要创建一个事件就行,以前的操作每次点击open按键就创建一次，浪费资源 // 操作中，通过，start()，stop()函数进行控制 tmr.Elapsed = new ElapsedEventHandler(tmr_timeout); //创建串口对象 serialPort = new SerialPort(); // 创建串口接收事件 // 这里只需要创建一个事件就行,以前的操作每次点击open按键就创建一次，浪费资源 // 操作中，通过，start()，stop()函数进行控制 serialPort.DataReceived = new SerialDataReceivedEventHandler(dealReceive) ; } private void getAvailablePort() { try { // 获取系统的串口 String[] serialPortArray = SerialPort.GetPortNames(); // 电脑没有串口,抛出异常 if (serialPortArray.Length == 0) { throw (new System.IO.IOException("This computer don't have serial port!")); } // 串口显示在comboBox中 if (serialPortArray != null && serialPortArray.Length != 0) { //对串口进行排序, 泛型的值是string，按照string类型进行排序 Array.Sort<String>(serialPortArray); foreach (String port in serialPortArray) { //添加到combox的item if (port != null && port.Length != 0) comboBoxSerialPorts.Items.Add(port); Console.WriteLine(port); } //默认选择第一个com，需要在if里面设置，如果没有检查到串口，在if外卖你设置就会出错。 comboBoxSerialPorts.SelectedIndex = 0; } } catch (System.IO.IOException e) { MessageBox.Show(e.Message); } } private void dealReceive(object sender, SerialDataReceivedEventArgs e) { if (serialPort.IsOpen == true) { // 缓存中有'\n'才会将数据读取，否则读取得到的数据为空 //String data = serialPort.ReadLine(); // 读取缓存中的数据,不管有没有'\n' String data = serialPort.ReadExisting(); if (data != String.Empty) { // 线程更新UI this.BeginInvoke(new SetTextCallback(SetText), new object[] { data }); } } } private void SetText(String text) { // 设置焦点到richTextBoxReceive //richTextBoxReceive.Focus(); // 需要手动设置richTextBox的滚动条，否则不会自动更新,只显示最开始的内容 // 设置光标的位置到文本尾 richTextBoxReceive.Select(richTextBoxReceive.TextLength, 0); // 滚动到控件光标处 richTextBoxReceive.ScrollToCaret(); // 在末尾添加新内容 richTextBoxReceive.AppendText(text); } private void buttonSend_Click(object sender, EventArgs e) { if (serialPort != null && serialPort.IsOpen) { //根据checkBox判断发送的数据最后是否添加'\n' if (checkBox_newline.Checked == true) serialPort.Write(TextBoxSend.Text.ToString() '\n'); else if (checkBox_newline.Checked == false) serialPort.Write(TextBoxSend.Text.ToString()); } } private void setPort() { try { serialPort.PortName = (String)(comboBoxSerialPorts.SelectedItem); serialPort.BaudRate = Convert.ToInt32(comboBoxBaudRate.SelectedItem); serialPort.DataBits = Convert.ToInt32(comboBoxDataBits.SelectedItem); switch (comboBoxStop.SelectedIndex) { case 0: serialPort.StopBits = StopBits.One; break; case 1: serialPort.StopBits = StopBits.OnePointFive; break; case 2: serialPort.StopBits = StopBits.Two; break; } switch (comboBoxParity.SelectedIndex) { case 0: serialPort.Parity = Parity.None; break; case 1: serialPort.Parity = Parity.Odd; break; case 2: serialPort.Parity = Parity.Even; break; } } catch (Exception ex) { Console.WriteLine(ex); } } //open or close private void buttonOpen_Click(object sender, EventArgs e) { if (buttonOpen.Text == "Open") { try { setPort(); serialPort.Open(); buttonOpen.Text = "Close"; buttonSend.Enabled = true; // 是否打开定时器 if (checkBoxRepeat.Checked == true) { // 打开了定时器之后，定时的时间就不能设置 textBoxTimer.Enabled = false; // 设置时间 tmr.Interval = (double)(int.Parse(textBoxTimer.Text)); //ms tmr.Enabled = true; tmr.AutoReset = true; //false:只定时一次, true：重复执行 tmr.Start(); } else { // 如果定时器没打开，就可以设置定时的时间 textBoxTimer.Enabled = true; } } catch (System.UnauthorizedAccessException) { MessageBox.Show("current port has been used by other application! \nor some other error may happened!\n"); } catch (System.IO.IOException) { // 如果程序打开时存在串口设备，就会显示在UI上 // 但是如果将串口（例如usb转串口转换器）拔了，这个电脑就不存在串口，但UI还是显示这个设备存在 // 打开时就会出现异常 MessageBox.Show("current port don't exist!\n"); } } else { serialPort.Close(); buttonOpen.Text = "Open"; buttonSend.Enabled = false; // 根据checkBoxRepeat检查定时器是否打开 if (checkBoxRepeat.Checked == true) { // 检查定时器是否使能 if (tmr.Enabled == true) { // stop tmr.Stop(); tmr.Enabled = false; } // 不能设置定时时间 textBoxTimer.Enabled = false; } else { // 可以设置定时时间 textBoxTimer.Enabled = true; } } } //清除接收框中的内容 private void cleanText_Click(object sender, EventArgs e) { richTextBoxReceive.Clear(); } // Todo: 模仿超级终端等软件，在接受框中输入能够与串口连接的设备进行交互 // if you don't need it ,just comment or delete it! // 接受框按键事件处理 private void richTextBoxReceive_KeyPress(object sender, KeyPressEventArgs e) { /* if (e.KeyChar == (char)13) // enter key { //serialPort.Write("\r"); //byte by = 0x0A; '\n' byte[] by = {0x0A }; //byte by = 0x0D; '\r' //byte[] by = {0x0D }; // enter serialPort.Write(by, 0, by.Length); //serialPort.DiscardInBuffer(); //byte by = 0x0A; //serialPort.BytesToWrite(by); //serialPort.Write("\r\n"); //serialport.wir.Write("\r\n"); //rtbOutgoing.Text = ""; } else if (e.KeyChar == (char)3) { MessageBox.Show("You pressed control c"); byte[] by = { 0x03 }; serialPort.Write(by, 0, by.Length); //return true;// serialPort.Write('^C'); } else if (e.KeyChar < 32 || e.KeyChar > 126) { e.Handled = true; // ignores anything else outside printable ASCII range } else { //ComPort.Write(e.KeyChar.ToString()); serialPort.Write(e.KeyChar.ToString()); } */ } // Todo: // if you don't need it ,just comment or delete it! // 方向键按键事件处理,通过重载processCmdKey函数实现 protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { /* //capture up arrow key if (keyData == Keys.Up) { MessageBox.Show("You pressed Up arrow key"); return true; } //capture down arrow key if (keyData == Keys.Down) { MessageBox.Show("You pressed Down arrow key"); return true; } //capture left arrow key if (keyData == Keys.Left) { MessageBox.Show("You pressed Left arrow key"); return true; } //capture right arrow key if (keyData == Keys.Right) { MessageBox.Show("You pressed Right arrow key"); return true; } if (keyData == (Keys.Control | Keys.C)) { MessageBox.Show("You pressed control c"); return true; } */ return base.ProcessCmdKey(ref msg, keyData); } void tmr_timeout(object sender, ElapsedEventArgs e) { if (serialPort != null && serialPort.IsOpen) { try { if (serialPort.IsOpen == true && tmr.Enabled == true) { if (checkBox_newline.Checked == true) serialPort.Write(TextBoxSend.Text.ToString() '\n'); else if (checkBox_newline.Checked == false) serialPort.Write(TextBoxSend.Text.ToString()); } } catch (System.InvalidOperationException) { Console.WriteLine("invalid exception ------"); } catch (System.IO.IOException) { Console.WriteLine("io exception ------"); } } } // checkBox状态改变出发事件 private void checkBoxRepeat_CheckedChanged(object sender, EventArgs e) { // 串口打开 if (serialPort.IsOpen == true) { // 检查此时checkBox状态 if (checkBoxRepeat.Checked == true) { // 开启定时器 if (tmr.Enabled == false) {tmr.Interval = (double)(int.Parse(textBoxTimer.Text)); //ms tmr.Start(); tmr.Enabled = true; textBoxTimer.Enabled = false; } } else if (checkBoxRepeat.Checked == false) { // 定时器如果打开, 关闭定时器 if (tmr.Enabled == true) { // stop tmr.Stop(); tmr.Enabled = false; } textBoxTimer.Enabled = true; } } else //串口没打开 { // 只设置textBoxTimer是否时能 if (textBoxTimer.Enabled) textBoxTimer.Enabled = false; else textBoxTimer.Enabled = true; } } }}
评论