C#串口通信總結(jié).doc

C#串口通信總結(jié)作者：不詳 出處：網(wǎng)絡(luò)轉(zhuǎn)載 2011/10/10 16:01:52 閱讀 0 次 我們知道對于標(biāo)準DLL,可以采用DllImport進行調(diào)用。例如：DllImport(KMY350X.dll)private static extern int OpenPort(int PortNum, int BaudRate); 甘特圖Xgantt（全球首款甘特圖32年歷史） Visual WebGui（完美的用戶界面解決方案） Stimulsoft Reports.Net（報表生成控件） DXperience Uni Premium 白金版(慧都獨家) 如果一些廠家比較懶的話，沒有提供相應(yīng)的dll,我們只能對它進行串口通信編程了。以前從沒接觸過串口編程，最近在一個項目中有幾個地方都需要采用串口通信，跟公司一個老手請教后，感覺學(xué)到了很多東西，特在此做個總結(jié): 一：首先我們來認識下什么是串口： 右鍵 我的電腦-管理-設(shè)備管理器-端口，選擇一個端口，點擊屬性。 我們可以看到該串口的屬性，在C#中我們使用SerialPort類來表示串口 ConfigClass config = new ConfigClass();comm.serialPort.PortName = config.ReadConfig(SendHealCard);/波特率comm.serialPort.BaudRate = 9600;/數(shù)據(jù)位comm.serialPort.DataBits = 8;/兩個停止位comm.serialPort.StopBits = System.IO.Ports.StopBits.One;/無奇偶校驗位comm.serialPort.Parity = System.IO.Ports.Parity.None;comm.serialPort.ReadTimeout = 100;comm.serialPort.WriteTimeout = -1; 二：串口調(diào)試工具： 在對串口進行編程時候，我們要向串口發(fā)送指令，然后我們解析串口返回的指令。在這里向大家推薦一款工具。 串口調(diào)試助手.exe 將要發(fā)送的指令用空格隔開，選擇HEX顯示為放回的字符串。 三：正式編程： 編寫Comm類: public class Commpublic delegate void EventHandle(byte readBuffer);public event EventHandle DataReceived; public SerialPort serialPort;Thread thread;volatile bool _keepReading; public Comm()serialPort = new SerialPort();thread = null;_keepReading = false; public bool IsOpengetreturn serialPort.IsOpen; private void StartReading()if (!_keepReading)_keepReading = true;thread = new Thread(new ThreadStart(ReadPort);thread.Start(); private void StopReading()if (_keepReading)_keepReading = false;thread.Join();thread = null; private void ReadPort()while (_keepReading)if (serialPort.IsOpen)int count = serialPort.BytesToRead;if (count 0)byte readBuffer = new bytecount;tryApplication.DoEvents();serialPort.Read(readBuffer, 0, count);if(DataReceived != null)DataReceived(readBuffer);Thread.Sleep(100);catch (TimeoutException) public void Open()Close();serialPort.Open();if (serialPort.IsOpen)StartReading();elseMessageBox.Show(串口打開失敗！); public void Close()StopReading();serialPort.Close(); public void WritePort(byte send, int offSet, int count)if (IsOpen)serialPort.Write(send, offSet, count); 注冊串口： Comm comm = new Comm();ConfigClass config = new ConfigClass();comm.serialPort.PortName = config.ReadConfig(SendHealCard);/波特率comm.serialPort.BaudRate = 9600;/數(shù)據(jù)位comm.serialPort.DataBits = 8;/兩個停止位comm.serialPort.StopBits = System.IO.Ports.StopBits.One;/無奇偶校驗位comm.serialPort.Parity = System.IO.Ports.Parity.None;comm.serialPort.ReadTimeout = 100;comm.serialPort.WriteTimeout = -1;comm.Open();if (comm.IsOpen)comm.DataReceived += new Comm.EventHandle(comm_DataReceived); 發(fā)送指令： / / 發(fā)卡到機口/ private void SendCardToOut()is_read_card = false;sendCardToOut = true;byte send = 0x02, 0x46, 0x43, 0x34, 0x03, 0x30 ;if (comm.IsOpen)comm.WritePort(send, 0, send.Length); 收到指令，并解析： void comm_DataReceived(byte readBuffer1)/log.Info(HexCon.ByteToString(readBuffer);if (readBuffer1.Length = 1)receive = HealCardClass.ByteToString(readBuffer1);string str = 06;if (string.Equals(receive.Trim(), str, StringComparison.CurrentCultureIgnoreCase)tryif (is_read_card)byte send = new byte1;send0 = 0x05;comm.WritePort(send, 0, send.Length);Thread.Sleep(500);comm.DataReceived -= new Comm.EventHandle(comm_DataReceived);InitReadComm();if (sendCardToOut)byte send = new byte1;send0 = 0x05;comm.WritePort(send, 0, send.Length); readComm.DataReceived -= new Comm.EventHandle(readComm_DataReceived);readComm.Close(); log.Info(發(fā)卡完成！);lblMsg.Text = 發(fā)卡成