mycom是串口通信类，在本blog前一篇中有完整代码。( C#串口通信编程类(修改版) )下面是串口通讯测试程序的源代码，将mycom类放在此项目中可以实现简单的串口通信，希望读者能通过这个程序对串口通信过程有一个初步的了解：using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Threading;namespace BusApp{ /// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.Button button1; private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label4; private System.Windows.Forms.Label label5; private System.Windows.Forms.Label label6; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button3; private System.Windows.Forms.Button button4; private System.Windows.Forms.TextBox textBox8; private System.Windows.Forms.Label label7;
public int iPort=1; //1,2,3,4 public int iRate=9600; //1200,2400,4800,9600 public byte bSize=8; //8 bits public byte bParity=0; // 0-4=no,odd,even,mark,space public byte bStopBits=1; // 0,1,2 = 1, 1.5, 2 public int iTimeout=1000; public mycom mycom1=new mycom(); public byte[] recb;
private System.Windows.Forms.TextBox msg; private System.Windows.Forms.TextBox t_port; private System.Windows.Forms.TextBox t_rate; private System.Windows.Forms.TextBox t_bytesize; private System.Windows.Forms.TextBox t_stopbyte; private System.Windows.Forms.TextBox t_parity; private System.Windows.Forms.TextBox t_send; private System.Windows.Forms.Button button5; //readTimeOut /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.Container components = null;
public Form1() { InitializeComponent(); }
/// <summary> /// 清理所有正在使用的资源。 /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (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.msg = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.t_send = new System.Windows.Forms.TextBox(); this.button1 = new System.Windows.Forms.Button(); this.groupBox1 = new System.Windows.Forms.GroupBox(); this.button2 = new System.Windows.Forms.Button(); this.t_port = new System.Windows.Forms.TextBox(); this.label3 = new System.Windows.Forms.Label(); this.t_rate = new System.Windows.Forms.TextBox(); this.label4 = new System.Windows.Forms.Label(); this.t_bytesize = new System.Windows.Forms.TextBox(); this.label5 = new System.Windows.Forms.Label(); this.t_stopbyte = new System.Windows.Forms.TextBox(); this.label6 = new System.Windows.Forms.Label(); this.t_parity = new System.Windows.Forms.TextBox(); this.button3 = new System.Windows.Forms.Button(); this.button4 = new System.Windows.Forms.Button(); this.textBox8 = new System.Windows.Forms.TextBox(); this.label7 = new System.Windows.Forms.Label(); this.button5 = new System.Windows.Forms.Button(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // msg // this.msg.ForeColor = System.Drawing.Color.Green; this.msg.Location = new System.Drawing.Point(0, 0); this.msg.Multiline = true; this.msg.Name = "msg"; this.msg.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.msg.Size = new System.Drawing.Size(512, 264); this.msg.TabIndex = 0; this.msg.Text = ""; // // label1 // this.label1.Location = new System.Drawing.Point(16, 24); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(56, 16); this.label1.TabIndex = 1; this.label1.Text = "串口号："; // // label2 // this.label2.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.label2.Location = new System.Drawing.Point(8, 280); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(80, 16); this.label2.TabIndex = 1; this.label2.Text = "设置数据包："; // // t_send // this.t_send.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_send.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(128)), ((System.Byte)(0))); this.t_send.Location = new System.Drawing.Point(80, 272); this.t_send.Name = "t_send"; this.t_send.Size = new System.Drawing.Size(344, 21); this.t_send.TabIndex = 2; this.t_send.Text = ""; // // button1 // this.button1.Location = new System.Drawing.Point(432, 272); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(40, 23); this.button1.TabIndex = 3; this.button1.Text = "发送"; this.button1.Click += new System.EventHandler(this.button1_Click); // // groupBox1 // this.groupBox1.Controls.Add(this.button2); this.groupBox1.Controls.Add(this.t_port); this.groupBox1.Controls.Add(this.label1); this.groupBox1.Controls.Add(this.label3); this.groupBox1.Controls.Add(this.t_rate); this.groupBox1.Controls.Add(this.label4); this.groupBox1.Controls.Add(this.t_bytesize); this.groupBox1.Controls.Add(this.label5); this.groupBox1.Controls.Add(this.t_stopbyte); this.groupBox1.Controls.Add(this.label6); this.groupBox1.Controls.Add(this.t_parity); this.groupBox1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0))); this.groupBox1.Location = new System.Drawing.Point(8, 304); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(176, 216); this.groupBox1.TabIndex = 4; this.groupBox1.TabStop = false; this.groupBox1.Text = "参数设置"; // // button2 // this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Popup; this.button2.Location = new System.Drawing.Point(80, 184); this.button2.Name = "button2"; this.button2.TabIndex = 3; this.button2.Text = "应用设置"; this.button2.Click += new System.EventHandler(this.button2_Click); // // t_port // this.t_port.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_port.Location = new System.Drawing.Point(80, 16); this.t_port.Name = "t_port"; this.t_port.Size = new System.Drawing.Size(80, 21); this.t_port.TabIndex = 2; this.t_port.Text = "1"; // // label3 // this.label3.Location = new System.Drawing.Point(16, 58); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(56, 16); this.label3.TabIndex = 1; this.label3.Text = "波特率："; // // t_rate // this.t_rate.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_rate.Location = new System.Drawing.Point(80, 50); this.t_rate.Name = "t_rate"; this.t_rate.Size = new System.Drawing.Size(80, 21); this.t_rate.TabIndex = 2; this.t_rate.Text = "9600"; // // label4 // this.label4.Location = new System.Drawing.Point(16, 92); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(56, 16); this.label4.TabIndex = 1; this.label4.Text = "数据位："; // // t_bytesize // this.t_bytesize.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_bytesize.Location = new System.Drawing.Point(80, 84); this.t_bytesize.Name = "t_bytesize"; this.t_bytesize.Size = new System.Drawing.Size(80, 21); this.t_bytesize.TabIndex = 2; this.t_bytesize.Text = "8"; // // label5 // this.label5.Location = new System.Drawing.Point(16, 126); this.label5.Name = "label5"; this.label5.Size = new System.Drawing.Size(56, 16); this.label5.TabIndex = 1; this.label5.Text = "停止位："; // // t_stopbyte // this.t_stopbyte.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_stopbyte.Location = new System.Drawing.Point(80, 118); this.t_stopbyte.Name = "t_stopbyte"; this.t_stopbyte.Size = new System.Drawing.Size(80, 21); this.t_stopbyte.TabIndex = 2; this.t_stopbyte.Text = "1"; // // label6 // this.label6.Location = new System.Drawing.Point(16, 160); this.label6.Name = "label6"; this.label6.Size = new System.Drawing.Size(56, 16); this.label6.TabIndex = 1; this.label6.Text = "校验位："; // // t_parity // this.t_parity.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.t_parity.Enabled = false; this.t_parity.Location = new System.Drawing.Point(80, 152); this.t_parity.Name = "t_parity"; this.t_parity.Size = new System.Drawing.Size(80, 21); this.t_parity.TabIndex = 2; this.t_parity.Text = "0"; // // button3 // this.button3.Location = new System.Drawing.Point(472, 272); this.button3.Name = "button3"; this.button3.Size = new System.Drawing.Size(40, 23); this.button3.TabIndex = 3; this.button3.Text = "清空"; this.button3.Click += new System.EventHandler(this.button3_Click); // // button4 // this.button4.FlatStyle = System.Windows.Forms.FlatStyle.Popup; this.button4.Location = new System.Drawing.Point(432, 312); this.button4.Name = "button4"; this.button4.Size = new System.Drawing.Size(72, 23); this.button4.TabIndex = 6; this.button4.Text = "初始化"; // // textBox8 // this.textBox8.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.textBox8.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(128)), ((System.Byte)(0))); this.textBox8.Location = new System.Drawing.Point(288, 312); this.textBox8.Name = "textBox8"; this.textBox8.Size = new System.Drawing.Size(136, 21); this.textBox8.TabIndex = 7; this.textBox8.Text = ""; // // label7 // this.label7.Location = new System.Drawing.Point(200, 320); this.label7.Name = "label7"; this.label7.Size = new System.Drawing.Size(100, 16); this.label7.TabIndex = 8; this.label7.Text = "设置本机地址："; // // button5 // this.button5.FlatStyle = System.Windows.Forms.FlatStyle.Popup; this.button5.Location = new System.Drawing.Point(440, 504); this.button5.Name = "button5"; this.button5.Size = new System.Drawing.Size(64, 23); this.button5.TabIndex = 9; this.button5.Text = "关闭串口"; this.button5.Click += new System.EventHandler(this.button5_Click); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(512, 533); this.Controls.Add(this.button5); this.Controls.Add(this.textBox8); this.Controls.Add(this.label7); this.Controls.Add(this.button4); this.Controls.Add(this.groupBox1); this.Controls.Add(this.button1); this.Controls.Add(this.t_send); this.Controls.Add(this.msg); this.Controls.Add(this.label2); this.Controls.Add(this.button3); this.Name = "Form1"; this.Text = "串口通讯（小y设计）"; this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing); this.Load += new System.EventHandler(this.Form1_Load); this.groupBox1.ResumeLayout(false); this.ResumeLayout(false);
} #endregion
/// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); }//程序开启，串口初始化 private void Form1_Load(object sender, System.EventArgs e) { mycom1.PortNum=iPort; mycom1.BaudRate=iRate; mycom1.ByteSize=bSize; mycom1.Parity=bParity; mycom1.StopBits=bStopBits; mycom1.ReadTimeout=iTimeout; if(this.OpenCom()) msg.AppendText("串口初始化成功……/r/n"); else msg.AppendText("串口初始化失败！/r/n"); }//显示包信息 public string dis_package(byte[] reb) { string temp=""; foreach(byte b in reb) temp+=b.ToString("X2")+" "; return temp; }//开串口 public bool OpenCom() { try { if (mycom1.Opened) { mycom1.Close(); mycom1.Open(); //打开串口 } else { mycom1.Open();//打开串口 } return true; } catch(Exception e) { MessageBox.Show("错误：" + e.Message); return false; }
}//发送按钮 private void button1_Click(object sender, System.EventArgs e) { if(t_send.Text=="") {MessageBox.Show("发送数据为空！");return;} byte[] temp1=mysendb(); int sendnumb=0; try { sendnumb=mycom1.Write(temp1); msg.AppendText("/r/n发送数据("+sendnumb+")："+dis_package(temp1)); recb=mycom1.Read(50); //if(recb.Length!=0) msg.AppendText("/r/n接收到数据包："+dis_package(recb)); } catch {msg.AppendText("/r/n发送失败！");return;} //OpenCom(); }//去掉发送数组中的空格 public string delspace(string putin) { string putout=""; for(int i=0;i<putin.Length;i++) { if(putin[i]!=' ') putout+=putin[i]; } return putout; }//提取数据包 public byte[] mysendb() { string temps=delspace(t_send.Text); byte[] tempb=new byte[50]; int j=0; for(int i=0;i<temps.Length;i=i+2,j++) tempb[j]=Convert.ToByte(temps.Substring(i,2),16); byte[] send=new byte[j]; Array.Copy(tempb,send,j); return send; }//清空按钮 private void button3_Click(object sender, System.EventArgs e) { t_send.Text=string.Empty; msg.Text=string.Empty; }
//参数设置 private void button2_Click(object sender, System.EventArgs e) { mycom1.PortNum=Convert.ToInt16(t_port.Text); //1,2,3,4 mycom1.BaudRate=Convert.ToInt16(t_rate.Text); //1200,2400,4800,9600 mycom1.ByteSize=Convert.ToByte(t_bytesize.Text,10); //8 bits mycom1.Parity=Convert.ToByte(t_parity.Text,10); // 0-4=no,odd,even,mark,space mycom1.StopBits=Convert.ToByte(t_stopbyte.Text,10); // 0,1,2 = 1, 1.5, 2 //iTimeout=3; if(this.OpenCom()) msg.AppendText("串口初始化成功……/r/n"); else msg.AppendText("串口初始化失败！/r/n"); }//程序关闭，结束串口 private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e) { mycom1.Close(); }
private void button5_Click(object sender, System.EventArgs e) { if(mycom1.Opened) { mycom1.Close(); button5.Text="开启串口"; msg.AppendText("/r/n串口被关闭……"); } else { mycom1.Open(); button5.Text="关闭串口"; msg.AppendText("/r/n串口成功开启……"); } } }}注意：发送数据包的格式是16进制数据如：02 45 66 FA 中间可以有或者没有空格，但要保证有偶数位
