C#之windows桌面軟件第六課：（上集）串口工具實現(xiàn)數(shù)據(jù)校驗、用燈反應(yīng)設(shè)備狀態(tài)

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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms;using System.IO.Ports; namespace Reply {public partial class Form1 : Form{byte DataSended = 0;byte[] DataToSend = new byte[] { 0x01, 0x02, 0x03 }; //數(shù)據(jù)發(fā)送public Form1(){InitializeComponent();System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;/*此句代碼的作用：把我們自己寫的函數(shù)添加到系統(tǒng)中，使系統(tǒng)可以使用我們自己定義的函數(shù)*/serialPort1.DataReceived += new SerialDataReceivedEventHandler(SerialPortDataReceived); //添加串口中斷事件}//填充顏色private void SetOvlShape(int which) {switch(which){case 1:ovalShape1.FillColor = Color.Green;ovalShape2.FillColor = Color.Red;ovalShape3.FillColor = Color.Red;break;case 2:ovalShape1.FillColor = Color.Red;ovalShape2.FillColor = Color.Green;ovalShape3.FillColor = Color.Red;break;case 3:ovalShape1.FillColor = Color.Red;ovalShape2.FillColor = Color.Red;ovalShape3.FillColor = Color.Green;break;case 4:ovalShape1.FillColor = Color.Green;ovalShape2.FillColor = Color.Green;ovalShape3.FillColor = Color.Green;break;default:break;}}//串口中斷private void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e){//單片機中常用的類型是無符號型（在取反的時候不做無符號處理），而C#默認(rèn)數(shù)據(jù)類型是整型，所以前面加(byte)強制轉(zhuǎn)換byte DataReceived = (byte)(~serialPort1.ReadByte()); //單字節(jié)讀取。（取反校驗的優(yōu)點是不破壞原始數(shù)據(jù)）try{timer1.Stop(); //關(guān)定時器}catch { }if (DataSended == 0) //防止下位機亂發(fā)，不處理return;SetOvlShape(DataReceived);//燈try{if (DataToSend[DataSended - 1] == DataReceived) //校驗數(shù)據(jù){MessageBox.Show("數(shù)據(jù)校驗成功", "成功！"); //彈出提示}else{MessageBox.Show("數(shù)據(jù)校驗失敗", "數(shù)據(jù)校驗失敗");}}catch{}}private void button1_Click(object sender, EventArgs e) //打開/關(guān)閉串口{if (serialPort1.IsOpen) //一堆處理……{try{serialPort1.Close();}catch{}button1.Text = "打開串口";}else{try{serialPort1.PortName = comboBox1.Text; //串口號 serialPort1.Open(); //打開}catch{MessageBox.Show("串口打開錯誤，請檢查", "串口");}button1.Text = "關(guān)閉串口";}}//單字節(jié)發(fā)送數(shù)據(jù)到串口private void SendDataToSerialPort(SerialPort MyPort, byte DataToSend) {byte[] DatasToWrite = new byte[] { DataToSend }; //數(shù)據(jù)包if (serialPort1.IsOpen){try{MyPort.Write(DatasToWrite, 0, 1); //發(fā)數(shù)據(jù)timer1.Interval = 3 * 1000; //設(shè)定超時時間（3S）timer1.Start(); //定時器}catch{MessageBox.Show("串口數(shù)據(jù)寫入錯誤", "錯誤");}}}//三個按鍵共用一個處理函數(shù)private void Button_Click(object sender, EventArgs e) {Button MyButton = (Button)sender; //定義一個按鍵對象 //通過tag屬性來區(qū)分DataSended = Convert.ToByte(MyButton.Tag); //字符串 -》數(shù)字型 (用tag的值來區(qū)分是那個按鍵)SendDataToSerialPort(serialPort1, DataToSend[DataSended - 1]); //向串口發(fā)送單字節(jié)數(shù)據(jù)}//定時器事件（3s后會執(zhí)行此函數(shù)）private void timer1_Tick(object sender, EventArgs e) {string MyStr = DataSended.ToString() + "路數(shù)據(jù)校驗超時，請檢查"; //Messagebox內(nèi)容 timer1.Stop();MessageBox.Show(MyStr, "錯誤");}} }

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