实例介绍
【实例截图】
【核心代码】
/* * 由SharpDevelop创建。 * 用户: hp * 日期: 2015/6/4 * 时间: 15:20 * * 要改变这种模板请点击 工具|选项|代码编写|编辑标准头文件 */ using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO.Ports; namespace 串口通信程序1 { /// <summary> /// Description of MainForm. /// </summary> public partial class MainForm : Form { public MainForm() { InitializeComponent(); } public void ComboBox1SelectedIndexChanged(object sender, EventArgs e) { } public void Button1Click(object sender, EventArgs e)//点击按钮获取串口 { try { { serialPort1.DataBits=7; serialPort1.BaudRate=Convert.ToInt16( textBox1.Text.ToString()); if (serialPort1.PortName==comboBox1.Text)//判断计算机端口是否等于设定端口 { serialPort1.Open(); this.button1.Text="关闭端口"; } else {serialPort1.Close(); this.button1.Text="打开端口"; } } } catch { MessageBox.Show("请设定波特率"); } } /////以上是打开端口的程序 private bool timerIsActive= false;//最好初始化 public void MainFormLoad(object sender, EventArgs e)//获取计算机的端口与设定端口 { string[] ports = SerialPort.GetPortNames();//获取计算的可用串口 foreach(string port in ports) {this.textBox4.Text=port.ToString(); this .comboBox1.Text=port.ToString(); serialPort1.PortName=textBox4.Text; } for (int i=0;i<=20;i )//for循环增加串口 { comboBox1.Items.Add("COM" i.ToString());//下拉框中出现串口 comboBox1.SelectedItem=1; } for (int q=0;q<=20;q )//for循环增加发送的数据 { string str=Convert.ToString(q,16); if (str.Length==1) {str="0" str; str ="0x" str; comboBox2.Items.Add(str);//下拉框中出现串口 } } } public static int Asc(string character)//字符串转为ASCII码 { if (character.Length == 1) { System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding(); int intAsciiCode = (int)asciiEncoding.GetBytes(character)[0]; return (intAsciiCode); } else { throw new Exception("Character is not valid."); } } public void Button3Click(object sender, EventArgs e)//发送数据的按钮 { byte[]date=new byte[1]; string rtu; try { rtu=comboBox2.Text;//发送的数据在下拉框中显示 rtu=rtu.Substring(2,2); date[0]=Convert.ToByte(rtu,16);} catch { MessageBox.Show ("请使用正确的字符串"); } date[0]=1; if(serialPort1.IsOpen) { try { serialPort1.Write(date,0,1); this.textBox2.Text=date[0] ""; } catch { MessageBox.Show ("端口没有打开,请检查端口"); } } else { MessageBox.Show ("端口没有打开,请检查端口"); } } public void Button4Click(object sender, EventArgs e)//发送代码 { //02h,30h,30h,30h,38h,30h,39h,32h,03h,35h,44h //STX,0,0,0,8,0,0,2,ETX,5,D 发送数据 //02,30,34,03,36,37 PLC返回来的数据 30对应的是0 34对应的是4 对应的0000 0100 char[]c={(char)2,(char)48,(char)48,(char)48,(char)56,(char)48,(char)48,(char)50,(char)3,(char)53,(char)68}; //char[] c = { (char)2, (char)48, (char)49, (char)48, (char)48, (char)48, (char)50, (char)48, (char)3, (char)53, (char)54 }; int i=0; string s=""; for (i=0;i<11;i ) { s=s c[i].ToString(); } serialPort1.Write(s); textBox3.Text=s; timer1.Enabled=true; } public void Timer1Tick(object sender, EventArgs e) { string data1=""; bool sc; SolidBrush bush1 = new SolidBrush(Color.Red); SolidBrush bush2 = new SolidBrush(Color.Green); Graphics g1 = this.pictureBox1.CreateGraphics(); Graphics g2 = this.pictureBox2.CreateGraphics(); Graphics g3 = this.pictureBox3.CreateGraphics(); Graphics g4 = this.pictureBox4.CreateGraphics(); Graphics g5 = this.pictureBox5.CreateGraphics(); Graphics g6 = this.pictureBox6.CreateGraphics(); Graphics g7= this.pictureBox7.CreateGraphics(); Graphics g8= this.pictureBox8.CreateGraphics(); data1=serialPort1.ReadExisting(); int b = data1.Length; if (b==8) { byte [] h=strToToHexByte(data1.Substring(1,2));//提取有用字符串转化成十进制数组 byte [] p=strToToHexByte(data1.Substring(3,2)); int oy =Convert.ToInt32(h [0]);//将十进制数组转换成整形整数 int oj=Convert.ToInt32(p [0]); string er = Convert.ToString(oy, 2);//将整数转化成二进制 er=Fill(er); //string er1=Parent.ToSByte(er); string re= Convert.ToString(oj, 2); textBox6.Text=er ; textBox7.Text=re ; timer1.Enabled=false; if (er!=""&&re!="") { sc=true ; MessageBox.Show("状态读取成功"); } else { sc=false; MessageBox.Show("状态读取失败"); } if (sc==true ) { int? sum =null; bool ?res=null; for (int i = 0 ;i <er.Length; i ) { sum =Convert.ToUInt16(er.Substring(i,1)); switch (sum) { case 0: res=false; break; case 1: res=true ; break ; } if (i==0&& res ==true )//x07状态 { g7.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==0&&res ==false) { g7.FillEllipse(bush2, 0, 0, 20, 20); } if (i==1&&res==true)//x06状态 { g2.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==1&&res ==false) { g2.FillEllipse(bush2, 0, 0, 20, 20); } if (i==2&&res==true )//x05状态 { g1.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==2&&res==false) { g1.FillEllipse(bush2, 0, 0, 20, 20); } if (i==3&&res==true )//x04状态 { g3.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==3&&res==false) { g3.FillEllipse(bush2, 0, 0, 20, 20); } if (i==4&&res==true )//x03状态 { g4.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==4&&res ==false) { g4.FillEllipse(bush2, 0, 0, 20, 20); } if (i==5&&res==true )//x02状态 { g5.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==5&&res==false) { g5.FillEllipse(bush2, 0, 0, 20, 20); } if (i==6&&res==true )//x01状态 { g6.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==6&&res==false) { g6.FillEllipse(bush2, 0, 0, 20, 20); } if (i==7&&res ==true )//x0状态 { g8.FillEllipse(bush1, 0, 0, 20, 20); } else if (i==7&&res==false) { g8.FillEllipse(bush2, 0, 0, 20, 20); } } } else{ MessageBox.Show("读取有误"); return; } } } public static byte[] strToToHexByte(string hexString)//字符串转字节数组 { hexString = hexString.Replace(" ", ""); if ((hexString.Length % 2) != 0) hexString = " "; byte[] returnBytes = new byte[hexString.Length / 2]; for (int i = 0; i < returnBytes.Length; i ) returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16); return returnBytes; } void PictureBox6Click(object sender, EventArgs e) { } public static string Fill(string pStrSource)//位数不够就补0 { switch(pStrSource.Length) { case 1:return "0000000" pStrSource; case 2:return "000000" pStrSource; case 3:return "00000" pStrSource; case 4:return "0000" pStrSource; case 5:return "000" pStrSource; case 6:return "00" pStrSource; case 7:return "0" pStrSource; default:return pStrSource; } } void Label19Click(object sender, EventArgs e) { } public void Button2Click(object sender, System.EventArgs e)//启动按钮m0.0 { char[]c={(char)2,(char)49,(char)48,(char)49,(char)48,(char)48,(char)48,(char)49,(char)48,(char)49,(char)3,(char)66,(char)55}; //char[] c = { (char)2, (char)48, (char)49, (char)48, (char)48, (char)48, (char)50, (char)48, (char)3, (char)53, (char)54 }; int i=0; string s=""; for (i=0;i<13;i ) { s=s c[i].ToString(); } serialPort1.Write(s); ghu (); } public void Button5Click(object sender, EventArgs e)//停止按钮m0.1 { char[]c={(char)2,(char)49,(char)48,(char)49,(char)48,(char)48,(char)48,(char)49,(char)48,(char)50,(char)3,(char)66,(char)56}; //char[] c = { (char)2, (char)48, (char)49, (char)48, (char)48, (char)48, (char)50, (char)48, (char)3, (char)53, (char)54 }; int i=0; string s=""; for (i=0;i<13;i ) { s=s c[i].ToString(); } serialPort1.Write(s); ghu(); } public void ghu()//读取y的状态 { char[]c={(char)2,(char)48,(char)48,(char)48,(char)65,(char)48,(char)48,(char)49,(char)3,(char)57,(char)53}; //char[] c = { (char)2, (char)48, (char)49, (char)48, (char)48, (char)48, (char)50, (char)48, (char)3, (char)53, (char)54 }; int i=0; string s=""; for (i=0;i<11;i ) { s=s c[i].ToString(); } serialPort1.Write(s); timer2.Enabled=true; } void Timer2Tick(object sender, EventArgs e) { string data1=""; bool tr; SolidBrush bush3 = new SolidBrush(Color.Red); SolidBrush bush4 = new SolidBrush(Color.Green); Graphics g9 = this.pictureBox9.CreateGraphics(); Graphics g10 = this.pictureBox10.CreateGraphics(); data1=serialPort1.ReadExisting(); if (data1 != null) { int b = data1.Length; if (b>0) { byte [] h=strToToHexByte(data1.Substring(1,2));//提取有用字符串转化成十进制数组 byte [] p=strToToHexByte(data1.Substring(3,2)); int oy =Convert.ToInt32(h [0]);//将十进制数组转换成整形整数 int oj=Convert.ToInt32(p [0]); string eu=Convert.ToString(oy, 2);//将整数转化成二进制 eu =Fill(eu); //string er1=Parent.ToSByte(er); string ru= Convert.ToString(oj, 2); ru =Fill(ru); if (eu!=""&&ru!="") { tr=true; } else{ tr=false; MessageBox.Show("y的状态读取不成功"); } if (tr==true ) { int? sum =null; bool ?res=null; for (int l = 0 ;l <eu.Length; l ) { sum =Convert.ToUInt16(eu.Substring(l,1)); switch (sum) { case 0: res=false; break; case 1: res=true ; break ; } if(l==8&&res==true) { g9.FillEllipse(bush3, 0, 0, 20, 20); } else { g10.FillEllipse(bush4, 0, 0, 20, 20); } if(l==7&&res==true) { g10.FillEllipse(bush3, 0, 0, 20, 20); } else { g10.FillEllipse(bush4, 0, 0, 20, 20); } } } } else { MessageBox.Show("y的状态读取不成功"); } } else{ MessageBox.Show("通信超时"); } timer2.Enabled=false; } } }
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