CSharp串口通信

using System;

using System.Collections.Generic;

using ponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.IO.Ports;

namespace SerialPorts

{

public partial class frm_Main : Form

{

#region Public Enumerations

public enum DataMode { Text, Hex }

public enum LogMsgType { Incoming, Outgoing, Normal, Warning, Error };

#endregion

private Color[] LogMsgTypeColor = { Color.Orange, Color.Green, Color.Black, Color.Blue, Color.Red }; //禁用和启用程序中各控件的状态

private void EnableControls()

{

// 基于串口的打开与否，设置控件状态

gbPortSettings.Enabled = !ComPort.IsOpen;

btns.Enabled = btnstop.Enabled = txtSendData.Enabled = btnSend.Enabled = ComPort.IsOpen;

if (ComPort.IsOpen) btnOpenPort.Text = "关闭串口";

else btnOpenPort.Text = "打开串口";

}

//初始化组件的数据，为串口提供相关参数

private void InitializeControlValues()

{

cmbParity.Items.Clear(); cmbParity.Items.AddRange(Enum.GetNames(typeof(Parity)));

cmbStopBits.Items.Clear(); cmbStopBits.Items.AddRange(Enum.GetNames(typeof(StopBits)));

cmbPortName.Items.Clear();

foreach (string s in SerialPort.GetPortNames())

cmbPortName.Items.Add(s);

cmbPortName.Text = cmbPortName.Items[0].ToString();

cmbParity.Text = cmbParity.Items[0].ToString();

cmbStopBits.Text = cmbStopBits.Items[0].ToString();

cmbDataBits.Text = cmbDataBits.Items[0].ToString();

cmbParity.Text = cmbParity.Items[0].ToString();

cmbBaudRate.Text = cmbBaudRate.Items[0].ToString();

EnableControls();

}

//十六进制转换字节数组

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;

}

//字节数组转换十六进制

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();

}

//显示数据日志

private void Log(LogMsgType msgtype, string msg)

{

rtfTerminal.Invoke(new EventHandler(delegate

{

rtfTerminal.SelectedText = string.Empty;

rtfTerminal.SelectionFont = new Font(rtfTerminal.SelectionFont, FontStyle.Bold); rtfTerminal.SelectionColor = LogMsgTypeColor[(int)msgtype];

rtfTerminal.AppendText(msg);

rtfTerminal.ScrollToCaret();

}));

}

//串口发送方式

#region Local Properties

private DataMode CurrentDataMode

{

get

{

if (rbHex.Checked) return DataMode.Hex;

else return DataMode.Text;

}

set

{

if (value == DataMode.Text) rbText.Checked = true;

else rbHex.Checked = true;

}

}

#endregion

//发送数据