介绍
文章上所说的串口助手，工程文件资源-CSDN文库
目标
代码实现
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e){if (isRxShow == false) return;// 1,需要读取有效的数据 BytesToReadbyte[] dataTemp = new byte[serialPort1.BytesToRead];serialPort1.Read(dataTemp,0,dataTemp.Length);reciveBuffer.AddRange(dataTemp);reciveCount += dataTemp.Length;this.Invoke(new EventHandler(delegate{// 显示接收数据的长度recivecount_tssl.Text = reciveCount.ToString();if (startData_chb.Checked == false){if (!recivehex_chb.Checked){// 2, 编码格式的选择string str = Encoding.GetEncoding("gb2312").GetString(dataTemp);// 3，0x00 -> \0 结束 不会显示str = str.Replace("\0", "\\0");recive_rtb.AppendText(str);// recive_rtb.AppendText(Encoding.GetEncoding("gb2312").GetString(dataTemp).Replace("\0", "\\0"));}else{// 十六进制是选中的状态下recive_rtb.AppendText(Transform.ToHexString(dataTemp, " "));}}else{// 解析数据 queueforeach (byte item in dataTemp){// 入列bufferQueue.Enqueue(item);}// 解析获取帧头if (isHeadRecive == false){foreach (byte item in bufferQueue.ToArray()){if (item != 0x7f){// 出列bufferQueue.Dequeue();Console.WriteLine("not 0x7f, Dequeue !!");}else{// get 0x7f from bufferQueueisHeadRecive = true;Console.WriteLine("0x7f is recived !!");break;}}}if (isHeadRecive == true){// 判断有数据帧长度if (bufferQueue.Count >= 2){Console.WriteLine(DateTime.Now.ToLongTimeString());Console.WriteLine($"show the data in bufferQueue{Transform.ToHexString(bufferQueue.ToArray())}");Console.WriteLine($"frame lenth ={String.Format("{0:X2}", bufferQueue.ToArray()[1])}");frameLenth = bufferQueue.ToArray()[1];// 一帧完整的数据长度判断，不代表数据是正确的if(bufferQueue.Count>=1+1+frameLenth+2){byte[] frameBuffer = new byte[1 + 1 + frameLenth + 2];Array.Copy(bufferQueue.ToArray(), 0, frameBuffer, 0, frameBuffer.Length);if(crc_chech(frameBuffer)){Console.WriteLine("frame is check ok,pick it");data_txb.Text = Transform.ToHexString(frameBuffer);data1_txb.Text = String.Format("{0:X2}", frameBuffer[2]);data2_txb.Text = String.Format("{0:X2}", frameBuffer[3]);data3_txb.Text = String.Format("{0:X2}", frameBuffer[4]);data4_txb.Text = String.Format("{0:X2}", frameBuffer[5]);}else{// 无效数据Console.WriteLine("bad frame, drop it");}for(int i=0; i<1 + 1+frameLenth+2;i++){bufferQueue.Dequeue();}isHeadRecive = false;}}//接续接收数据}}}));} private bool crc_chech(byte[] frameBuffer){/*大端模式: 是指数据的高字节保存在内存的低地址中，* 而数据的低字节保存在内存的高地址中，这样的存储* 模式有点儿类似于把数据当作字符串顺序处理：地址* 由小向大增加，而数据从高位往低位放；这和我们的* 阅读习惯一致。* * 小端模式: 是指数据的高字节保存在内存的高地址中，* 而数据的低字节保存在内存的低地址中，这种存储模* 式将地址的高低和数据位权有效地结合起来，高地址* 部分权值高，低地址部分权值低。*/bool ret = false;byte[] temp = new byte[frameBuffer.Length-2];Array.Copy(frameBuffer, 0, temp, 0, temp.Length);byte[] crcdata = DataCheck.DataCrc16_Ccitt(temp, DataCheck.BigOrLittle.BigEndian);if (crcdata[0] == frameBuffer[frameBuffer.Length - 2] &&crcdata[1]== frameBuffer[frameBuffer.Length-1]){// check okret = true;}return ret;}效果展示
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