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;using System.Threading;namespace RS232{ public partial class fclsRS232Tester : Form { // Various colors for logging info private Color[] MsgTypeColor = { Color.Blue, Color.Green, Color.Black, Color.Orange, Color.Red }; string InputData = String.Empty; BackgroundWorker background_Send = new BackgroundWorker(); /// <summary> Convert a string of hex digits (ex: E4 CA B2) to a byte array. </summary> /// <param name="s"> The string containing the hex digits (with or without spaces). </param> /// <returns> Returns an array of bytes. </returns> 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; } /// <summary> Converts an array of bytes into a formatted string of hex digits (ex: E4 CA B2)</summary> /// <param name="data"> The array of bytes to be translated into a string of hex digits. </param> /// <returns> Returns a well formatted string of hex digits with spacing. </returns> 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(); } private byte[] intToByte(int i) { byte[] abyte0 = new byte[4]; abyte0[0] = (byte)((0xff000000 & i) >> 24); abyte0[1] = (byte)((0xff0000 & i) >> 16); abyte0[2] = (byte)((0xff00 & i) >> 8); abyte0[3] = (byte)(0xff & i); return abyte0; } public byte[] shortToByte(int i) { byte[] abyte0 = new byte[2]; abyte0[0] = (byte)((0xff00 & i) >> 8); abyte0[1] = (byte)(0xff & i); return abyte0; } public fclsRS232Tester() { InitializeComponent(); cmbParity.Items.Clear(); cmbParity.Items.AddRange(Enum.GetNames(typeof(Parity))); cmbStopBits.Items.Clear(); cmbStopBits.Items.AddRange(Enum.GetNames(typeof(StopBits))); cmbStopBits.SelectedIndex = cmbStopBits.Items.IndexOf("One"); cmbDataBits.SelectedIndex = cmbDataBits.Items.IndexOf("8"); cmbParity.SelectedIndex = cmbParity.Items.IndexOf("None"); cmbBaudRate.SelectedIndex = cmbBaudRate.Items.IndexOf("19200"); //初始化下拉串口名称列表框 cmbPortName.Items.Clear(); foreach (string s in SerialPort.GetPortNames()) cmbPortName.Items.Add(s); ; if (cmbPortName.Items.Count > 0) cmbPortName.SelectedIndex = 0; //else //{ // MessageBox.Show(this, "There are no COM Ports detected on this computer.\nPlease install a COM Port and restart this app.", "No COM Ports Installed", MessageBoxButtons.OK, MessageBoxIcon.Error); // this.Close(); //} cbomode.Items.Add("固定"); cbomode.Items.Add("自增"); cbomode.Items.Add("自减"); cbomode.SelectedIndex = 0; background_Send.WorkerSupportsCancellation = true; background_Send.DoWork = new DoWorkEventHandler(background_Send_DoWork); background_Send.RunWorkerCompleted = new RunWorkerCompletedEventHandler(background_Send_RunWorkerCompleted); } private void Disablecontrol() { cmbPortName.Enabled = false; cmbBaudRate.Enabled = false; cmbDataBits.Enabled = false; cmbStopBits.Enabled = false; cmbParity.Enabled = false; } private void Enablecontrol() { cmbPortName.Enabled = true; cmbBaudRate.Enabled = true; cmbDataBits.Enabled = true; cmbStopBits.Enabled = true; cmbParity.Enabled = true; } // <summary> /// 串口初始化函数 /// </summary> private void btnOpen_Click(object sender, EventArgs e) { if (btnOpen.Text == "打开串口") { if (cmbPortName.Text.Trim() == "") { MessageBox.Show("COM Port cann't empty!", "RS232 tester", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; } // try to open the selected port: try { // If the port is open, close it. if (port.IsOpen) port.Close(); else { // Set the port's settings port.BaudRate = int.Parse(cmbBaudRate.Text); port.DataBits = int.Parse(cmbDataBits.Text); port.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmbStopBits.Text); port.Parity = (Parity)Enum.Parse(typeof(Parity), cmbParity.Text); port.PortName = cmbPortName.Text; // Open the port port.Open(); this.Disablecontrol(); stsStatus.Text = port.PortName ": is Opened!" ; btnOpen.Text = "关闭串口"; }} // give a message, if the port is not available: catch { MessageBox.Show("Serial port " port.PortName " cannot be opened!", "RS232 tester", MessageBoxButtons.OK, MessageBoxIcon.Warning); cmbPortName.SelectedText = ""; stsStatus.Text = "Select serial port!"; } } else { try { if (port.IsOpen) port.Close(); this.Enablecontrol(); stsStatus.Text = port.PortName ": 已关闭"; btnOpen.Text = "打开串口"; } catch (Exception ex) { MessageBox.Show(ex.Message); } } } private void SendData(string str) { try { if (!port.IsOpen)//判断串口是否打开 { MessageBox.Show("Serial port is closed!", "RS232 tester", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } string sendstr = (chkpx.Checked) ? '\r' str '\n' : str; if (chkhex.Checked) { byte[] data = HexStringToByteArray(sendstr); port.Write(data, 0, data.Length); txtOut.Text = strtohex(sendstr); } else { byte[] data = System.Text.Encoding.ASCII.GetBytes(sendstr); port.Write(data, 0, data.Length); } } catch (Exception ex) { MessageBox.Show(ex.Message); } } string sendbuf; private void btnSend_Click(object sender, EventArgs e) { if (btnSend.Text.Equals("停止发送")) { timer1.Enabled = false; btnSend.Text = "发送"; sendbuf = ""; return; } if (chkauto.Checked) { sendbuf = txtOut.Text; timer1.Interval = int.Parse(txtimes.Text); timer1.Enabled = true; btnSend.Text = "停止发送"; } else { string temp = txtOut.Text; SendData(temp); switch (cbomode.SelectedIndex) { case 0: temp = txtOut.Text; break; case 1: temp = strinc(txtOut.Text, 10); break; case 2: temp = strdec(txtOut.Text, 10); break; } txtOut.Text = temp; } } private void btnClear_Click(object sender, EventArgs e) { txtMsg.Clear(); } private void port_DataReceived(object sender, SerialDataReceivedEventArgs e) { string dataRe = ""; byte[] byteRead = new byte[port.BytesToRead]; port.Read(byteRead, 0, byteRead.Length); dataRe= System.Text.Encoding.ASCII.GetString(byteRead); SetText(dataRe); } private void SetText(String data) { if (data == null) return; txtMsg.Invoke(new EventHandler(delegate { txtMsg.SelectedText = string.Empty; txtMsg.SelectionFont = new Font(txtMsg.SelectionFont, FontStyle.Bold); if (chkenter.Checked) txtMsg.AppendText(data "\r\n"); else txtMsg.AppendText(data); txtMsg.Select();//让RichTextBox获得焦点 txtMsg.Select(txtMsg.TextLength, 0);//将插入符号置于文本结束处 txtMsg.ScrollToCaret(); })); } private void background_Send_DoWork(object sender, DoWorkEventArgs e) { try { string temp = sendbuf; SendData(temp); switch (cbomode.SelectedIndex) { case 0: temp = sendbuf; break; case 1: temp = strinc(sendbuf, 10); break; case 2: temp = strdec(sendbuf, 10); break; } sendbuf = temp;} catch (System.IO.IOException ex)//读取失败 { stsStatus.Text = ex.Message; e.Cancel = true; return; } catch (Exception ex) { stsStatus.Text = ex.Message; e.Cancel = true; return; } } private void background_Send_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (e.Cancelled) { return; } } private void timer1_Tick(object sender, EventArgs e) { if (!background_Send.IsBusy) { background_Send.RunWorkerAsync(); } } private void chkauto_CheckedChanged(object sender, EventArgs e) { txtimes.Enabled = chkauto.Checked; } #region string function /// <summary> /// Char转ASCII /// </summary> /// <param name="character"></param> /// <returns></returns> public static int Asc(string character) { 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."); } } /// <summary> /// ASCII码转Char /// </summary> /// <param name="asciiCode"></param> /// <returns></returns> public static string Chr(int asciiCode) { if (asciiCode >= 0 && asciiCode <= 255) { System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding(); byte[] byteArray = new byte[] { (byte)asciiCode }; string strCharacter = asciiEncoding.GetString(byteArray); return (strCharacter); } else { throw new Exception("ASCII Code is not valid."); } } /// <summary> /// 字符串加1函数 /// </summary> /// <param name="s1"></param> /// <param name="hex"></param> /// <returns></returns> public static string strinc(string s1, int hex) { string str, newstr; int index = 0; int newInt; str = s1.Trim().Replace(" ", ""); str = str.ToUpper(); if (hex == 10) { for (int i = str.Length - 1; i > 0; i--) { if (str[i] != (char)57) { index = i; break; } } newInt = Convert.ToInt32(str.Substring(index)) 1; str = str.Substring(0, index) newInt.ToString(); } else if (hex == 16) { newstr = ""; for (int i = str.Length - 1; i > 0; i--) { if (str[i] == (char)57) { newstr = "A"; index = i; break; } else if (str[i] != (char)70) { newstr = Chr(Asc(str.Substring(i, 1)) 1); index = i; break; } } str = str.Substring(0, index) newstr str.Substring(index 1).Replace("F", "0"); } return str; } /// <summary> /// 字符串减1函数 /// </summary> /// <param name="s1"></param> /// <param name="hex"></param> /// <returns></returns> public static string strdec(string s1, int hex) { string str, newstr; int index = 0; int newInt; str = s1.Trim().Replace(" ", ""); str = str.ToUpper(); if (hex == 10) { for (int i = str.Length - 1; i > 0; i--) { if (str[i] != (char)48) { index = i; break; } } newInt = Convert.ToInt32(str.Substring(index)) - 1; str = str.Substring(0, index) newInt.ToString().PadLeft(str.Length - index, '0'); } else if (hex == 16) { newstr = ""; for (int i = str.Length - 1; i > 0; i--) { if (str[i] == (char)65) { newstr = "9"; index = i; break; } else if (str[i] != (char)48) { newstr = Chr(Asc(str.Substring(i, 1)) - 1); index = i; break; } } str = str.Substring(0, index) newstr str.Substring(index 1).Replace("0", "F"); } return str; } /// <summary> /// 字符串转16进制字符 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string strtohex(string str) { string strTemp = ""; if (str == "") return ""; byte[] bTemp = System.Text.Encoding.Default.GetBytes(str); for (int i = 0; i < bTemp.Length; i ) { strTemp = bTemp[i].ToString("X2"); } return strTemp; } #endregion }}
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