C# 串口助手小应用

刺骨的言语ヽ痛彻心扉 2022-04-10 01:18 415阅读 0赞

### **C\# 串口助手小应用** ###

**一、简述**

**        记--使用C\#+VS2010编写简单的串口助手小应用。(测试版本)**

**        源码打包：链接: https://pan.baidu.com/s/1\_RJ4bQMJkd1JJRIpDiYXHQ 提取码: h2wb **

**        仿真文件打包：链接: https://pan.baidu.com/s/1kl3eRnYCHQhhpBJWdrLBLA 提取码: sujw **

**        修改版：链接: https://pan.baidu.com/s/1Nt2MxpKJFdbSJjx1hVNUCg 提取码: bpcc**

**        2019年01月17日修改版：改动：添加换行符的选择。**

**2019年01月22日修改版：改动：添加编码的选择。**

**二、效果**

**        1、使用HC-06蓝牙模块进行测试(给蓝牙模块发送AT指令，它会回复OK)**

**              **![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70][]

**        2、使用Proteus仿真+虚拟串口软件  进行测试**

**            (protues仿真STC51单片机，单片机将从串口收到的数据原封不动的发回去。如果单片机收到的是'1'则点亮LED灯，否则熄灭LED灯)**

**             **![20181220201610421.gif][]

**3、使用蓝牙模块CC2540 CC2541带底板蓝牙 iBeacon 进行测试 （2019-01-17修改版）**

**              **![20190117210753620.gif][]

** 4、使用STM32开发板的串口1进行测试**  （2019-01-22修改版）

![20190122090207609.gif][]

**三、工程结构**

**         **![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70 1][]

**四、源文件**

**        Program.cs文件**

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;
    using System.IO.Ports;
    
    namespace 串口助手
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
    
            //创建串口操作对象
            SerialPort serialPort = new System.IO.Ports.SerialPort();
            uint sendCount = 0;//记录发送的数目
            uint recvCount = 0;//记录接收到的数目
            System.Timers.Timer timer1 = new System.Timers.Timer();//定时器，用来实现自动发送
        
            //清空接收区按钮 响应函数
            private void button2_Click(object sender, EventArgs e)
            {
                txtbRecv.Text = "";
            }
    
            //窗体加载执行的函数
            private void Form1_Load(object sender, EventArgs e)
            {
                //添加端口列表
                cmbPort.Items.AddRange(System.IO.Ports.SerialPort.GetPortNames());
    
                //添加波特率列表
                int i;
                for (i = 300; i <= 38400; i = i*2)
                {
                    cmbBaud.Items.Add(i.ToString());  
                }
                string[] baud = { "43000", "56000", "57600", "115200", "128000", "230400", "256000", "460800" };
                cmbBaud.Items.AddRange(baud);
    
                //添加检验方式列表
                string[] check = { "None", "Odd(奇校验)", "Even(偶校验)", "Mark校验", "Space校验" };
                cmbCheck.Items.AddRange(check);
    
                //添加数据位列表
                string[] data = { "5", "6", "7", "8"};
                cmbData.Items.AddRange(data);
    
                //添加停止位列表
                string[] stop = { "1", "1.5", "2" };
                cmbStop.Items.AddRange(stop);
    
    
                //设置默认值
                if (cmbPort.Items.Count > 0)//如果端口个数大于0
                {
                    cmbPort.SelectedIndex = 0;//默认选中第一个端口
                }
                cmbBaud.Text = "9600";
                cmbData.Text = "8";
                cmbCheck.Text = "None";
                cmbStop.Text = "1";
    
                radRecvText.Checked = true;//接收区默认以文本方式显示
                radSendText.Checked = true;//发送区默认以文本方式发送
                numericTime.Controls[1].Text = "1000";//设置初始值为1000毫秒=1秒
                numericTime.Maximum = 999999;//设置最大值
    
                serialPort.ReadBufferSize = 128;//设置串口缓冲区大小（可以不设置）
    
                serialPort.DataReceived += new SerialDataReceivedEventHandler(serialRecvData);//注册串口数据接收事件，就是当串口就收到数据之后会调用serialRecvData函数
                timer1.Elapsed += new System.Timers.ElapsedEventHandler(timer1_timeout);//到达时间的时候执行事件；
                
                
            }
    
            //当串口就收到数据之后会 调用的函数
            private void serialRecvData(object sender, SerialDataReceivedEventArgs e)
            {
                try
                {
                    string recvContent = null;//用来存放接收到的内容
                    
                    byte[] data = new byte[serialPort.BytesToRead];//申请存放数据的缓冲区
                    serialPort.Read(data, 0, data.Length);//读取数据到data中
                    
                    if (chbRecvTime.Checked)//如果勾选 显示接收数据时间
                    {
                        recvContent = ("[" + System.DateTime.Now.ToShortTimeString() + "] ");//显示当前时间
                    }
    
                    if (radRecvHex.Checked)//选择以16进制方式显示
                    {
                        StringBuilder recvData = new StringBuilder();//用来存放接收到的数据的字符串形式   
                        for (int i = 0; i < data.Length; i++)
                        {
                            recvData.Append(data[i].ToString("X2") + ' ');//转为16进制形式的字符串，并以空格隔开
                        }
                        recvContent += recvData.ToString().ToUpper();//将接收到的内容追加到接收区
                        recvCount += (uint)data.Length / 2;//将收到的数目加到总数目中(十六进制2个位置表示一个数据，空格不计)
                    }
                    else //选择以文本方式显示
                    {
                        recvContent += new ASCIIEncoding().GetString(data);//将接收到的内容追加到接收区
                        recvCount += (uint)data.Length;//将收到的数目加到总数目中
                    }
    
                    if (chbRecvNewLine.Checked)//如果勾选换行 （在显示每次接收到的数据后 自动换行）
                    {
                        recvContent += '\n';
                    }
    
                    //使用Invoke访问主线程创建的控件
                    this.Invoke((EventHandler)(delegate
                    {
                        txtbRecv.AppendText(recvContent);
                        lblRecvCount.Text = "接收:" + recvCount + " 字节";//将接收到的总字节数显示到下方的状态栏中
                    }));
    
                    
                }
                catch {}
            }
    
            //清空发送区 按钮的响应函数
            private void btnClrSend_Click(object sender, EventArgs e)
            {
                txtbSend.Text = "";
            }
    
            //打开串口 按钮点击响应函数
            private void btnOpenSerial_Click(object sender, EventArgs e)
            {
                if (cmbPort.Text.Equals(""))//如果选中项为空
                {
                    MessageBox.Show("请选择端口!");
                    return;
                }
    
                try
                {
                    if (serialPort.IsOpen)//如果串口已经打开，就关闭串口
                    {
                        serialPort.Close();//关闭串口
                        timer1.Stop();     //停止定时器
                        lblSerialStat.Text = "串口已关闭";//在底部状态栏显示 "串口已关闭"
                        lblSerialStat.ForeColor = Color.FromArgb(0, 0, 0);//设置字体颜色为黑色
                        btnOpenSerial.Text = "打开串口";//将按钮文本显示为 “打开串口”
                        btnOpenSerial.BackColor = Color.FromArgb(221, 221, 221);//将按钮的背景色设置为 初始按钮的颜色
    
                    }
                    else //串口处于关闭状态， 就打开串口
                    {
                        serialPort.PortName = cmbPort.Text;//设置端口
                        serialPort.BaudRate = Convert.ToInt32(cmbBaud.Text);//设置波特率
                        serialPort.DataBits = Convert.ToInt16(cmbData.Text);//设置数据位
    
                        //设置检验方式
                        if (cmbCheck.Text.Equals("None"))
                            serialPort.Parity = System.IO.Ports.Parity.None;
                        else if (cmbCheck.Text.Equals("Odd(奇校验)"))
                            serialPort.Parity = System.IO.Ports.Parity.Odd;
                        else if (cmbCheck.Text.Equals("Even(偶校验)"))
                            serialPort.Parity = System.IO.Ports.Parity.Even;
                        else if (cmbCheck.Text.Equals("Mark校验"))
                            serialPort.Parity = System.IO.Ports.Parity.Mark;
                        else if (cmbCheck.Text.Equals("Space校验"))
                            serialPort.Parity = System.IO.Ports.Parity.Space;
    
    
                        //设置停止位
                        if (cmbStop.Text.Equals("1"))
                            serialPort.StopBits = System.IO.Ports.StopBits.One;
                        else if (cmbStop.Text.Equals("1.5"))
                            serialPort.StopBits = System.IO.Ports.StopBits.OnePointFive;
                        else if (cmbStop.Text.Equals("2"))
                            serialPort.StopBits = System.IO.Ports.StopBits.Two;
    
                        //打开串口
                        serialPort.Open();
                        lblSerialStat.Text = "串口已打开";//在底部状态栏显示 "串口已打开"
                        lblSerialStat.ForeColor = Color.Green;//设置字体颜色为绿色
                        btnOpenSerial.Text = "关闭串口";//设置按钮的显示文本为 “关闭串口”
                        btnOpenSerial.BackColor = Color.ForestGreen;//设置按钮背景色为 树绿色
                    }
                }
                catch //简单的处理异常
                {
                    afterException();
                    MessageBox.Show("   打开串口失败！\n串口不存在或串口已经被打开！");
                }
            }
    
            //出现异常后执行的函数
            private void afterException()
            {
                //重新创建串口操作对象
                serialPort = new System.IO.Ports.SerialPort();
                timer1.Stop();     //停止定时器
    
                //使用Invoke访问主线程创建的控件（代理（也即委托）的方式来访问）
                this.Invoke((EventHandler)(delegate
                {
                    lblSerialStat.Text = "串口已关闭";//在底部状态栏显示 "串口已关闭"
                    lblSerialStat.ForeColor = Color.FromArgb(0, 0, 0);//设置字体颜色为黑色
                    btnOpenSerial.Text = "打开串口";//将按钮文本显示为 “打开串口”
                    btnOpenSerial.BackColor = Color.FromArgb(221, 221, 221);//将按钮的背景色设置为 初始按钮的颜色
                }));
    
            }
    
            //发送 按钮点击 响应函数
            private void btnSend_Click(object sender, EventArgs e)
            {
                try
                {
                    //要发送的内容
                    string content = txtbSend.Text.Trim();//txtbSend.Text.Trim()获取发送区的内容，Trim():去掉前后空格,然后转为ASCII码字节数组
                    if (content.Equals(""))//如果发送内容为空，直接返回
                    {
                        return;
                    }
                    if (serialPort.IsOpen)//在串口打开的状态下才发送
                    {
                        byte[] sendData = null;
                        try
                        {
                            if (radSendText.Checked)//选择的是文本方式发送
                            {
                                sendData = Encoding.ASCII.GetBytes(content);//将内容转为ASCII格式
                            }
                            else //选择的是16进制方式发送 
                            {
                                sendData = new byte[(content.Length + 1) / 2];//2个字符一组，加1操作是防止奇数情况漏掉一个
                                for (int i = 0; i < sendData.Length; i++)//将内容转为16进制格式
                                {
                                    sendData[i] = Convert.ToByte(content.Substring(i * 2, 2).Replace(" ", ""), 16);//每两个字符转为16进制的格式，并将空格替换掉
                                }
                            }
                        }
                        catch //如果转换过程出现异常(出现不是十六进制字符的)，直接返回
                        {
                            return;
                        }
    
                        try
                        {
                            serialPort.Write(sendData, 0, sendData.Length);//从串口发送数据
    
                            if (chbSendNewLine.Checked)//如果勾选自动发送新行
                            {
                                serialPort.WriteLine("");//发送新行
                                sendCount++;//发送的字符数+1
    
                            }
                        }
                        catch //如果发送数据时出现异常
                        {
                            afterException();
                        }
    
                        sendCount += (uint)sendData.Length;//记录发送的数目
                        lblSendCount.Text = "发送:" + sendCount + "字节";//将发送的字符数统计并显示到标签中。
                    }
                    else
                    {
                        MessageBox.Show("请打开串口！");
                    }
                }
                catch { }
            }
    
            //清空计数 按钮 点击响应函数
            private void btnClrCount_Click(object sender, EventArgs e)
            {
                lblSendCount.Text = "发送:0 字节";
                lblRecvCount.Text = "接收:0 字节";
                sendCount = 0;//清空发送总数目
                recvCount = 0;//清空接收总数目
            }
    
            //刷新端口 按钮点击响应函数
            private void btnRefresh_Click(object sender, EventArgs e)
            {
                try
                {
                    if (serialPort.IsOpen)//如果串口已经打开，就不重新扫描
                    {
                        return;
                    }
                    //清空原来的列表数据
                    cmbPort.Items.Clear();
                    //重新扫描端口，添加端口列表
                    cmbPort.Items.AddRange(System.IO.Ports.SerialPort.GetPortNames());
    
                    if (cmbPort.Items.Count > 0)//如果端口个数大于0
                    {
                        cmbPort.SelectedIndex = 0;//默认选中第一个端口
                    }
                }
                catch
                {
                    afterException();
                }
            }
    
            //当自动发送的勾选框状态发生变化时 执行的函数
            private void chbAutoSend_CheckedChanged(object sender, EventArgs e)
            {
                try
                {
                    if (!serialPort.IsOpen)//如果串口没有打开，就直接返回
                    {
                        return;
                    }
    
                    if (chbAutoSend.Checked)//如果是勾选自动发送，
                    {
                        timer1.Interval = Convert.ToInt32(numericTime.Controls[1].Text);//定时器赋初值
                        timer1.AutoReset = true;//自动重装初值
                        timer1.Start();     //启动定时器
                        lblSerialStat.Text = "串口已打开" + " 自动发送中...";//提示正在处于自动发送中
                    }
                    else //如果是取消勾选自动发送
                    {
                        timer1.Stop();     //停止定时器
                        lblSerialStat.Text = "串口已打开";
                    }
                }
                catch {}
            }
    
            //定时器到时 执行的函数
            private void timer1_timeout(object sender, EventArgs e)
            {
                //使用Invoke访问主线程创建的控件（代理（也即委托）的方式来访问）
                this.Invoke((EventHandler)(delegate
                {
                    btnSend_Click(btnSend, new EventArgs());  //定时时间到，就执行 发送按钮的点击响应函数
                }));
               
            }
    
            //窗体关闭的时候执行的函数
            private void Form1_FormClosing(object sender, FormClosingEventArgs e)
            {
                try
                {
                    if (serialPort.IsOpen)//如果窗体关闭时串口已经打开，那么就关闭串口
                    {
                        serialPort.Close();//关闭串口
                    }
                }
                catch { }
            }
        }
    }

Form1.Designer.cs文件

namespace 串口助手
    {
        partial class Form1
        {
            /// <summary>
            /// 必需的设计器变量。
            /// </summary>
            private System.ComponentModel.IContainer components = null;
    
            /// <summary>
            /// 清理所有正在使用的资源。
            /// </summary>
            /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
            protected override void Dispose(bool disposing)
            {
                if (disposing && (components != null))
                {
                    components.Dispose();
                }
                base.Dispose(disposing);
            }
    
            #region Windows 窗体设计器生成的代码
    
            /// <summary>
            /// 设计器支持所需的方法 - 不要
            /// 使用代码编辑器修改此方法的内容。
            /// </summary>
            private void InitializeComponent()
            {
                this.lblPort = new System.Windows.Forms.Label();
                this.lblBaud = new System.Windows.Forms.Label();
                this.lblData = new System.Windows.Forms.Label();
                this.lblCheck = new System.Windows.Forms.Label();
                this.lblStop = new System.Windows.Forms.Label();
                this.btnOpenSerial = new System.Windows.Forms.Button();
                this.radRecvText = new System.Windows.Forms.RadioButton();
                this.radRecvHex = new System.Windows.Forms.RadioButton();
                this.radSendHex = new System.Windows.Forms.RadioButton();
                this.radSendText = new System.Windows.Forms.RadioButton();
                this.chbRecvTime = new System.Windows.Forms.CheckBox();
                this.btnClrRecv = new System.Windows.Forms.Button();
                this.chbSendNewLine = new System.Windows.Forms.CheckBox();
                this.chbAutoSend = new System.Windows.Forms.CheckBox();
                this.lblSerialStat = new System.Windows.Forms.Label();
                this.lblRecvCount = new System.Windows.Forms.Label();
                this.lblSendCount = new System.Windows.Forms.Label();
                this.lblVertion = new System.Windows.Forms.Label();
                this.txtbSend = new System.Windows.Forms.TextBox();
                this.btnSend = new System.Windows.Forms.Button();
                this.btnClrCount = new System.Windows.Forms.Button();
                this.btnClrSend = new System.Windows.Forms.Button();
                this.cmbPort = new System.Windows.Forms.ComboBox();
                this.cmbBaud = new System.Windows.Forms.ComboBox();
                this.cmbData = new System.Windows.Forms.ComboBox();
                this.cmbCheck = new System.Windows.Forms.ComboBox();
                this.cmbStop = new System.Windows.Forms.ComboBox();
                this.numericTime = new System.Windows.Forms.NumericUpDown();
                this.label1 = new System.Windows.Forms.Label();
                this.btnRefresh = new System.Windows.Forms.Button();
                this.groupBoxSerialSettings = new System.Windows.Forms.GroupBox();
                this.groupBoxRecvArea = new System.Windows.Forms.GroupBox();
                this.txtbRecv = new System.Windows.Forms.TextBox();
                this.groupBoxRecvSettings = new System.Windows.Forms.GroupBox();
                this.groupBoxSendSettings = new System.Windows.Forms.GroupBox();
                this.groupBoxSendArea = new System.Windows.Forms.GroupBox();
                this.panelInfo = new System.Windows.Forms.Panel();
                this.chbRecvNewLine = new System.Windows.Forms.CheckBox();
                ((System.ComponentModel.ISupportInitialize)(this.numericTime)).BeginInit();
                this.groupBoxSerialSettings.SuspendLayout();
                this.groupBoxRecvArea.SuspendLayout();
                this.groupBoxRecvSettings.SuspendLayout();
                this.groupBoxSendSettings.SuspendLayout();
                this.groupBoxSendArea.SuspendLayout();
                this.panelInfo.SuspendLayout();
                this.SuspendLayout();
                // 
                // lblPort
                // 
                this.lblPort.AutoSize = true;
                this.lblPort.Location = new System.Drawing.Point(12, 23);
                this.lblPort.Name = "lblPort";
                this.lblPort.Size = new System.Drawing.Size(41, 12);
                this.lblPort.TabIndex = 0;
                this.lblPort.Text = "端  口";
                // 
                // lblBaud
                // 
                this.lblBaud.AutoSize = true;
                this.lblBaud.Location = new System.Drawing.Point(12, 50);
                this.lblBaud.Name = "lblBaud";
                this.lblBaud.Size = new System.Drawing.Size(41, 12);
                this.lblBaud.TabIndex = 1;
                this.lblBaud.Text = "波特率";
                // 
                // lblData
                // 
                this.lblData.AutoSize = true;
                this.lblData.Location = new System.Drawing.Point(12, 81);
                this.lblData.Name = "lblData";
                this.lblData.Size = new System.Drawing.Size(41, 12);
                this.lblData.TabIndex = 2;
                this.lblData.Text = "数据位";
                // 
                // lblCheck
                // 
                this.lblCheck.AutoSize = true;
                this.lblCheck.Location = new System.Drawing.Point(12, 111);
                this.lblCheck.Name = "lblCheck";
                this.lblCheck.Size = new System.Drawing.Size(41, 12);
                this.lblCheck.TabIndex = 3;
                this.lblCheck.Text = "校验位";
                // 
                // lblStop
                // 
                this.lblStop.AutoSize = true;
                this.lblStop.Location = new System.Drawing.Point(12, 145);
                this.lblStop.Name = "lblStop";
                this.lblStop.Size = new System.Drawing.Size(41, 12);
                this.lblStop.TabIndex = 4;
                this.lblStop.Text = "停止位";
                // 
                // btnOpenSerial
                // 
                this.btnOpenSerial.Location = new System.Drawing.Point(14, 173);
                this.btnOpenSerial.Name = "btnOpenSerial";
                this.btnOpenSerial.Size = new System.Drawing.Size(139, 32);
                this.btnOpenSerial.TabIndex = 5;
                this.btnOpenSerial.Text = "打开串口";
                this.btnOpenSerial.UseVisualStyleBackColor = true;
                this.btnOpenSerial.Click += new System.EventHandler(this.btnOpenSerial_Click);
                // 
                // radRecvText
                // 
                this.radRecvText.AutoSize = true;
                this.radRecvText.Location = new System.Drawing.Point(11, 28);
                this.radRecvText.Name = "radRecvText";
                this.radRecvText.Size = new System.Drawing.Size(47, 16);
                this.radRecvText.TabIndex = 7;
                this.radRecvText.TabStop = true;
                this.radRecvText.Text = "文本";
                this.radRecvText.UseVisualStyleBackColor = true;
                // 
                // radRecvHex
                // 
                this.radRecvHex.AutoSize = true;
                this.radRecvHex.Location = new System.Drawing.Point(75, 28);
                this.radRecvHex.Name = "radRecvHex";
                this.radRecvHex.Size = new System.Drawing.Size(71, 16);
                this.radRecvHex.TabIndex = 8;
                this.radRecvHex.TabStop = true;
                this.radRecvHex.Text = "十六进制";
                this.radRecvHex.UseVisualStyleBackColor = true;
                // 
                // radSendHex
                // 
                this.radSendHex.AutoSize = true;
                this.radSendHex.Location = new System.Drawing.Point(75, 27);
                this.radSendHex.Name = "radSendHex";
                this.radSendHex.Size = new System.Drawing.Size(71, 16);
                this.radSendHex.TabIndex = 10;
                this.radSendHex.TabStop = true;
                this.radSendHex.Text = "十六进制";
                this.radSendHex.UseVisualStyleBackColor = true;
                // 
                // radSendText
                // 
                this.radSendText.AutoSize = true;
                this.radSendText.Location = new System.Drawing.Point(11, 27);
                this.radSendText.Name = "radSendText";
                this.radSendText.Size = new System.Drawing.Size(47, 16);
                this.radSendText.TabIndex = 9;
                this.radSendText.TabStop = true;
                this.radSendText.Text = "文本";
                this.radSendText.UseVisualStyleBackColor = true;
                // 
                // chbRecvTime
                // 
                this.chbRecvTime.AutoSize = true;
                this.chbRecvTime.Location = new System.Drawing.Point(11, 59);
                this.chbRecvTime.Name = "chbRecvTime";
                this.chbRecvTime.Size = new System.Drawing.Size(96, 16);
                this.chbRecvTime.TabIndex = 9;
                this.chbRecvTime.Text = "显示接收时间";
                this.chbRecvTime.UseVisualStyleBackColor = true;
                // 
                // btnClrRecv
                // 
                this.btnClrRecv.Location = new System.Drawing.Point(6, 81);
                this.btnClrRecv.Name = "btnClrRecv";
                this.btnClrRecv.Size = new System.Drawing.Size(140, 29);
                this.btnClrRecv.TabIndex = 10;
                this.btnClrRecv.Text = "清空接收区";
                this.btnClrRecv.UseVisualStyleBackColor = true;
                this.btnClrRecv.Click += new System.EventHandler(this.button2_Click);
                // 
                // chbSendNewLine
                // 
                this.chbSendNewLine.AutoSize = true;
                this.chbSendNewLine.Location = new System.Drawing.Point(14, 64);
                this.chbSendNewLine.Name = "chbSendNewLine";
                this.chbSendNewLine.Size = new System.Drawing.Size(72, 16);
                this.chbSendNewLine.TabIndex = 11;
                this.chbSendNewLine.Text = "发送新行";
                this.chbSendNewLine.UseVisualStyleBackColor = true;
                // 
                // chbAutoSend
                // 
                this.chbAutoSend.AutoSize = true;
                this.chbAutoSend.Location = new System.Drawing.Point(14, 87);
                this.chbAutoSend.Name = "chbAutoSend";
                this.chbAutoSend.Size = new System.Drawing.Size(72, 16);
                this.chbAutoSend.TabIndex = 12;
                this.chbAutoSend.Text = "自动发送";
                this.chbAutoSend.UseVisualStyleBackColor = true;
                this.chbAutoSend.CheckedChanged += new System.EventHandler(this.chbAutoSend_CheckedChanged);
                // 
                // lblSerialStat
                // 
                this.lblSerialStat.AutoSize = true;
                this.lblSerialStat.Location = new System.Drawing.Point(3, 7);
                this.lblSerialStat.Name = "lblSerialStat";
                this.lblSerialStat.Size = new System.Drawing.Size(65, 12);
                this.lblSerialStat.TabIndex = 0;
                this.lblSerialStat.Text = "串口已关闭";
                // 
                // lblRecvCount
                // 
                this.lblRecvCount.AutoSize = true;
                this.lblRecvCount.Location = new System.Drawing.Point(142, 7);
                this.lblRecvCount.Name = "lblRecvCount";
                this.lblRecvCount.Size = new System.Drawing.Size(71, 12);
                this.lblRecvCount.TabIndex = 1;
                this.lblRecvCount.Text = "接收:0 字节";
                // 
                // lblSendCount
                // 
                this.lblSendCount.AutoSize = true;
                this.lblSendCount.Location = new System.Drawing.Point(272, 7);
                this.lblSendCount.Name = "lblSendCount";
                this.lblSendCount.Size = new System.Drawing.Size(71, 12);
                this.lblSendCount.TabIndex = 2;
                this.lblSendCount.Text = "发送:0 字节";
                // 
                // lblVertion
                // 
                this.lblVertion.AutoSize = true;
                this.lblVertion.Location = new System.Drawing.Point(477, 7);
                this.lblVertion.Name = "lblVertion";
                this.lblVertion.Size = new System.Drawing.Size(59, 12);
                this.lblVertion.TabIndex = 3;
                this.lblVertion.Text = "版本:V1.0";
                // 
                // txtbSend
                // 
                this.txtbSend.Location = new System.Drawing.Point(3, 20);
                this.txtbSend.Multiline = true;
                this.txtbSend.Name = "txtbSend";
                this.txtbSend.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
                this.txtbSend.Size = new System.Drawing.Size(252, 115);
                this.txtbSend.TabIndex = 0;
                // 
                // btnSend
                // 
                this.btnSend.Location = new System.Drawing.Point(261, 35);
                this.btnSend.Name = "btnSend";
                this.btnSend.Size = new System.Drawing.Size(77, 31);
                this.btnSend.TabIndex = 1;
                this.btnSend.Text = "发送";
                this.btnSend.UseVisualStyleBackColor = true;
                this.btnSend.Click += new System.EventHandler(this.btnSend_Click);
                // 
                // btnClrCount
                // 
                this.btnClrCount.Location = new System.Drawing.Point(405, 1);
                this.btnClrCount.Name = "btnClrCount";
                this.btnClrCount.Size = new System.Drawing.Size(66, 23);
                this.btnClrCount.TabIndex = 1;
                this.btnClrCount.Text = "清空计数";
                this.btnClrCount.UseVisualStyleBackColor = true;
                this.btnClrCount.Click += new System.EventHandler(this.btnClrCount_Click);
                // 
                // btnClrSend
                // 
                this.btnClrSend.Location = new System.Drawing.Point(261, 92);
                this.btnClrSend.Name = "btnClrSend";
                this.btnClrSend.Size = new System.Drawing.Size(77, 31);
                this.btnClrSend.TabIndex = 2;
                this.btnClrSend.Text = "清空发送区";
                this.btnClrSend.UseVisualStyleBackColor = true;
                this.btnClrSend.Click += new System.EventHandler(this.btnClrSend_Click);
                // 
                // cmbPort
                // 
                this.cmbPort.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
                this.cmbPort.FormattingEnabled = true;
                this.cmbPort.Location = new System.Drawing.Point(61, 15);
                this.cmbPort.Name = "cmbPort";
                this.cmbPort.Size = new System.Drawing.Size(71, 20);
                this.cmbPort.TabIndex = 6;
                // 
                // cmbBaud
                // 
                this.cmbBaud.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
                this.cmbBaud.FormattingEnabled = true;
                this.cmbBaud.Location = new System.Drawing.Point(59, 47);
                this.cmbBaud.Name = "cmbBaud";
                this.cmbBaud.Size = new System.Drawing.Size(73, 20);
                this.cmbBaud.TabIndex = 7;
                // 
                // cmbData
                // 
                this.cmbData.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
                this.cmbData.FormattingEnabled = true;
                this.cmbData.Location = new System.Drawing.Point(59, 78);
                this.cmbData.Name = "cmbData";
                this.cmbData.Size = new System.Drawing.Size(73, 20);
                this.cmbData.TabIndex = 8;
                // 
                // cmbCheck
                // 
                this.cmbCheck.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
                this.cmbCheck.FormattingEnabled = true;
                this.cmbCheck.Location = new System.Drawing.Point(59, 111);
                this.cmbCheck.Name = "cmbCheck";
                this.cmbCheck.Size = new System.Drawing.Size(73, 20);
                this.cmbCheck.TabIndex = 9;
                // 
                // cmbStop
                // 
                this.cmbStop.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
                this.cmbStop.FormattingEnabled = true;
                this.cmbStop.Location = new System.Drawing.Point(59, 142);
                this.cmbStop.Name = "cmbStop";
                this.cmbStop.Size = new System.Drawing.Size(73, 20);
                this.cmbStop.TabIndex = 10;
                // 
                // numericTime
                // 
                this.numericTime.Location = new System.Drawing.Point(83, 82);
                this.numericTime.Maximum = new decimal(new int[] {
                999999,
                0,
                0,
                0});
                this.numericTime.Name = "numericTime";
                this.numericTime.Size = new System.Drawing.Size(55, 21);
                this.numericTime.TabIndex = 13;
                // 
                // label1
                // 
                this.label1.AutoSize = true;
                this.label1.Location = new System.Drawing.Point(144, 87);
                this.label1.Name = "label1";
                this.label1.Size = new System.Drawing.Size(29, 12);
                this.label1.TabIndex = 14;
                this.label1.Text = "毫秒";
                // 
                // btnRefresh
                // 
                this.btnRefresh.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
                this.btnRefresh.Location = new System.Drawing.Point(135, 13);
                this.btnRefresh.Margin = new System.Windows.Forms.Padding(0);
                this.btnRefresh.Name = "btnRefresh";
                this.btnRefresh.Size = new System.Drawing.Size(38, 22);
                this.btnRefresh.TabIndex = 11;
                this.btnRefresh.Text = "刷新";
                this.btnRefresh.UseVisualStyleBackColor = true;
                this.btnRefresh.Click += new System.EventHandler(this.btnRefresh_Click);
                // 
                // groupBoxSerialSettings
                // 
                this.groupBoxSerialSettings.Controls.Add(this.btnRefresh);
                this.groupBoxSerialSettings.Controls.Add(this.cmbCheck);
                this.groupBoxSerialSettings.Controls.Add(this.cmbStop);
                this.groupBoxSerialSettings.Controls.Add(this.lblPort);
                this.groupBoxSerialSettings.Controls.Add(this.lblBaud);
                this.groupBoxSerialSettings.Controls.Add(this.cmbData);
                this.groupBoxSerialSettings.Controls.Add(this.lblData);
                this.groupBoxSerialSettings.Controls.Add(this.cmbBaud);
                this.groupBoxSerialSettings.Controls.Add(this.lblStop);
                this.groupBoxSerialSettings.Controls.Add(this.cmbPort);
                this.groupBoxSerialSettings.Controls.Add(this.lblCheck);
                this.groupBoxSerialSettings.Controls.Add(this.btnOpenSerial);
                this.groupBoxSerialSettings.Location = new System.Drawing.Point(4, 5);
                this.groupBoxSerialSettings.Name = "groupBoxSerialSettings";
                this.groupBoxSerialSettings.Size = new System.Drawing.Size(177, 217);
                this.groupBoxSerialSettings.TabIndex = 1;
                this.groupBoxSerialSettings.TabStop = false;
                this.groupBoxSerialSettings.Text = "串口设置";
                // 
                // groupBoxRecvArea
                // 
                this.groupBoxRecvArea.Controls.Add(this.txtbRecv);
                this.groupBoxRecvArea.Location = new System.Drawing.Point(187, 12);
                this.groupBoxRecvArea.Name = "groupBoxRecvArea";
                this.groupBoxRecvArea.Size = new System.Drawing.Size(350, 311);
                this.groupBoxRecvArea.TabIndex = 1;
                this.groupBoxRecvArea.TabStop = false;
                this.groupBoxRecvArea.Text = "接收区";
                // 
                // txtbRecv
                // 
                this.txtbRecv.Location = new System.Drawing.Point(3, 17);
                this.txtbRecv.Margin = new System.Windows.Forms.Padding(0);
                this.txtbRecv.Multiline = true;
                this.txtbRecv.Name = "txtbRecv";
                this.txtbRecv.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
                this.txtbRecv.Size = new System.Drawing.Size(339, 286);
                this.txtbRecv.TabIndex = 0;
                // 
                // groupBoxRecvSettings
                // 
                this.groupBoxRecvSettings.Controls.Add(this.chbRecvNewLine);
                this.groupBoxRecvSettings.Controls.Add(this.btnClrRecv);
                this.groupBoxRecvSettings.Controls.Add(this.chbRecvTime);
                this.groupBoxRecvSettings.Controls.Add(this.radRecvText);
                this.groupBoxRecvSettings.Controls.Add(this.radRecvHex);
                this.groupBoxRecvSettings.Location = new System.Drawing.Point(4, 228);
                this.groupBoxRecvSettings.Name = "groupBoxRecvSettings";
                this.groupBoxRecvSettings.Size = new System.Drawing.Size(177, 118);
                this.groupBoxRecvSettings.TabIndex = 1;
                this.groupBoxRecvSettings.TabStop = false;
                this.groupBoxRecvSettings.Text = "接收区设置";
                // 
                // groupBoxSendSettings
                // 
                this.groupBoxSendSettings.Controls.Add(this.label1);
                this.groupBoxSendSettings.Controls.Add(this.numericTime);
                this.groupBoxSendSettings.Controls.Add(this.radSendText);
                this.groupBoxSendSettings.Controls.Add(this.chbAutoSend);
                this.groupBoxSendSettings.Controls.Add(this.radSendHex);
                this.groupBoxSendSettings.Controls.Add(this.chbSendNewLine);
                this.groupBoxSendSettings.Location = new System.Drawing.Point(4, 352);
                this.groupBoxSendSettings.Name = "groupBoxSendSettings";
                this.groupBoxSendSettings.Size = new System.Drawing.Size(177, 118);
                this.groupBoxSendSettings.TabIndex = 1;
                this.groupBoxSendSettings.TabStop = false;
                this.groupBoxSendSettings.Text = "发送区设置";
                // 
                // groupBoxSendArea
                // 
                this.groupBoxSendArea.Controls.Add(this.btnClrSend);
                this.groupBoxSendArea.Controls.Add(this.btnSend);
                this.groupBoxSendArea.Controls.Add(this.txtbSend);
                this.groupBoxSendArea.Location = new System.Drawing.Point(187, 329);
                this.groupBoxSendArea.Name = "groupBoxSendArea";
                this.groupBoxSendArea.Size = new System.Drawing.Size(350, 141);
                this.groupBoxSendArea.TabIndex = 1;
                this.groupBoxSendArea.TabStop = false;
                this.groupBoxSendArea.Text = "发送区";
                // 
                // panelInfo
                // 
                this.panelInfo.Controls.Add(this.btnClrCount);
                this.panelInfo.Controls.Add(this.lblVertion);
                this.panelInfo.Controls.Add(this.lblSendCount);
                this.panelInfo.Controls.Add(this.lblRecvCount);
                this.panelInfo.Controls.Add(this.lblSerialStat);
                this.panelInfo.Location = new System.Drawing.Point(1, 473);
                this.panelInfo.Margin = new System.Windows.Forms.Padding(0);
                this.panelInfo.Name = "panelInfo";
                this.panelInfo.Size = new System.Drawing.Size(536, 29);
                this.panelInfo.TabIndex = 1;
                // 
                // chbRecvNewLine
                // 
                this.chbRecvNewLine.AutoSize = true;
                this.chbRecvNewLine.Location = new System.Drawing.Point(123, 59);
                this.chbRecvNewLine.Name = "chbRecvNewLine";
                this.chbRecvNewLine.Size = new System.Drawing.Size(48, 16);
                this.chbRecvNewLine.TabIndex = 11;
                this.chbRecvNewLine.Text = "换行";
                this.chbRecvNewLine.UseVisualStyleBackColor = true;
                // 
                // Form1
                // 
                this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
                this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
                this.ClientSize = new System.Drawing.Size(538, 498);
                this.Controls.Add(this.groupBoxSendArea);
                this.Controls.Add(this.groupBoxSendSettings);
                this.Controls.Add(this.groupBoxRecvSettings);
                this.Controls.Add(this.groupBoxRecvArea);
                this.Controls.Add(this.groupBoxSerialSettings);
                this.Controls.Add(this.panelInfo);
                this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
                this.Name = "Form1";
                this.Text = "串口助手";
                this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing);
                this.Load += new System.EventHandler(this.Form1_Load);
                ((System.ComponentModel.ISupportInitialize)(this.numericTime)).EndInit();
                this.groupBoxSerialSettings.ResumeLayout(false);
                this.groupBoxSerialSettings.PerformLayout();
                this.groupBoxRecvArea.ResumeLayout(false);
                this.groupBoxRecvArea.PerformLayout();
                this.groupBoxRecvSettings.ResumeLayout(false);
                this.groupBoxRecvSettings.PerformLayout();
                this.groupBoxSendSettings.ResumeLayout(false);
                this.groupBoxSendSettings.PerformLayout();
                this.groupBoxSendArea.ResumeLayout(false);
                this.groupBoxSendArea.PerformLayout();
                this.panelInfo.ResumeLayout(false);
                this.panelInfo.PerformLayout();
                this.ResumeLayout(false);
    
            }
    
            #endregion
    
            private System.Windows.Forms.Button btnOpenSerial;
            private System.Windows.Forms.Label lblCheck;
            private System.Windows.Forms.Label lblStop;
            private System.Windows.Forms.Label lblData;
            private System.Windows.Forms.Label lblBaud;
            private System.Windows.Forms.Label lblPort;
            private System.Windows.Forms.Button btnClrRecv;
            private System.Windows.Forms.CheckBox chbRecvTime;
            private System.Windows.Forms.RadioButton radRecvHex;
            private System.Windows.Forms.RadioButton radRecvText;
            private System.Windows.Forms.RadioButton radSendHex;
            private System.Windows.Forms.RadioButton radSendText;
            private System.Windows.Forms.Button btnClrCount;
            private System.Windows.Forms.Label lblVertion;
            private System.Windows.Forms.Label lblSendCount;
            private System.Windows.Forms.Label lblRecvCount;
            private System.Windows.Forms.Label lblSerialStat;
            private System.Windows.Forms.CheckBox chbAutoSend;
            private System.Windows.Forms.CheckBox chbSendNewLine;
            private System.Windows.Forms.Button btnClrSend;
            private System.Windows.Forms.Button btnSend;
            private System.Windows.Forms.TextBox txtbSend;
            private System.Windows.Forms.ComboBox cmbStop;
            private System.Windows.Forms.ComboBox cmbCheck;
            private System.Windows.Forms.ComboBox cmbData;
            private System.Windows.Forms.ComboBox cmbBaud;
            private System.Windows.Forms.ComboBox cmbPort;
            private System.Windows.Forms.NumericUpDown numericTime;
            private System.Windows.Forms.Label label1;
            private System.Windows.Forms.Button btnRefresh;
            private System.Windows.Forms.GroupBox groupBoxSerialSettings;
            private System.Windows.Forms.GroupBox groupBoxRecvArea;
            private System.Windows.Forms.TextBox txtbRecv;
            private System.Windows.Forms.GroupBox groupBoxRecvSettings;
            private System.Windows.Forms.GroupBox groupBoxSendSettings;
            private System.Windows.Forms.GroupBox groupBoxSendArea;
            private System.Windows.Forms.Panel panelInfo;
            private System.Windows.Forms.CheckBox chbRecvNewLine;
        }
    }

**五、总结**

**5.1 主要函数操作**

//获取串口操作对象：
    SerialPort serialPort = new System.IO.Ports.SerialPort();(注：using System.IO.Ports;)
    
    //获取已经 可以操作的串口列表 (COM1,COM2......)
    System.IO.Ports.SerialPort.GetPortNames();//返回的是string[]   
    
    //设置串口属性：
    serialPort.PortName = cmbPort.Text;//设置端口
    serialPort.BaudRate = Convert.ToInt32(cmbBaud.Text);//设置波特率
    serialPort.DataBits = Convert.ToInt16(cmbData.Text);//设置数据位
    serialPort.Parity = System.IO.Ports.Parity.None;//设置检验方式
    serialPort.StopBits = System.IO.Ports.StopBits.One;//设置停止位
    serialPort.Open();//打开串口
    serialPort.Close();//关闭串口
    
    serialPort.DataReceived += new SerialDataReceivedEventHandler(serialRecvData);//注册串口数据接收事件，就是当串口就收到数据之后会调用serialRecvData函数
    
    //从串口接收数据
    byte[] data = new byte[serialPort.BytesToRead];//申请存放数据的缓冲区
    serialPort.Read(data, 0, data.Length);//读取数据到data中
    
    //从串口发送数据
    byte[] data = null;
     serialPort.Write(sendData, 0, sendData.Length);//从串口发送数据

5.2 设置下拉列表不可编辑。

将ComboBox的DropDownStyle 属性设置为 DropDownList即可。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70 2][]

5.3 设置窗体大小为固定大小

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70 3][]

5.4 子线程访问主线程控件(子线程刷新主线程界面)

//使用Invoke访问主线程创建的控件（代理（也即委托）的方式来访问）
                this.Invoke((EventHandler)(delegate
                {
                     //访问主线程控件动作
                }));

5.5 定时器

System.Timers.Timer timer1 = new System.Timers.Timer();//定时器，用来实现自动发送
           timer1.Interval = Convert.ToInt32(numericTime.Controls[1].Text);//定时器赋初值
           timer1.AutoReset = true;//自动重装初值
           timer1.Start();     //启动定时器
           timer1.Stop();     //停止定时器

六、待完善。。。

1、关于显示多次 "显示接收时间" 问题

发送多个字节数据时，单片机发送数据是一个一个字节发送的，串口助手收到1个字节后可能程序马上就往下执行了，然后就输出接收时间，显示接收到的数据。然后发现后面的数据"到来"，再次读取，然后又显示时间，数据内容。

2、接收，发送问题。

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[20181220201610421.gif]: /images/20220404/8af3606784d444daa1275df0fe3e4c04.png
[20190117210753620.gif]: /images/20220404/36af8bae415d45fbb1fa2a45f2dedd11.png
[20190122090207609.gif]: /images/20220404/3fdc11d992014e48949c491a82908495.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70 1]: /images/20220404/19ccfc709a954121b7ac46e42346e6cc.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70 2]: /images/20220404/c7e2f77c909e493b907ac0d64bb851dd.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmZlaWJ1eWk_size_16_color_FFFFFF_t_70 3]: /images/20220404/da4bd900658842bfa3009782b842e1bf.png