C#串口通讯例子(调试工具源码)

 private void RS232_Button_Click(object sender, EventArgs e)
        {
            OpenRs232();  //打开串口
        }
       //&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&//
        private void addItems1(byte[] items)
        {
            if (Dat_StopDisplay_checkBox.Checked == true) return;
            CALC_PRO calc = new CALC_PRO();
            if (Dat_Rec_checkBox2.Checked == true)
            {
                if (Rec_Size % (Convert.ToByte(DataSize_numericUpDow3.Value) * 20)==0) Dat_Rec_TextBox1.Text = "";
            }
            Dat_Rec_TextBox1.Text = calc.ByteArrayToHexString(items);

            if (HUANHANG_checkBox1.Checked)
            {
                if (Rec_Size_Temp1 >= Convert.ToByte(DataSize_numericUpDow3.Value))
                {
                    Dat_Rec_TextBox1.Text = "\r\n";
                    Rec_Size_Temp1 = 0;
                }
            }
        }

        private void addItems3(int dat)
        {
           
            if (RTC_Calib_Output_Flag==1)
            {
                //label31.Text = dat.ToString();
                glassButton10.Enabled = true;
                groupBox6.Enabled = true;
                glassButton5.Text = "关闭-RTC校准";
                if (RTC_Calib_Send_Flag == 1)      label33.Text = "状态：已联机";
                else if (RTC_Calib_Send_Flag == 2) label15.Text = "校准值:发送成功";
            }
           
            else if (RTC_Calib_Output_Flag == 0)
            {
                 /*
                if (RTC_Calib_Send_Flag == 1)                  //关闭RTC测试,只有接收到正确返回指令才切换,暂时没用
                {
                    glassButton5.Text = "打开-RTC校准";
                    glassButton10.Enabled = false;
                    groupBox6.Enabled = false;
                    label31.Text = dat.ToString();
                    label33.Text = "状态：等待联机";
                }*/
            }
           
            RTC_Calib_Send_Flag = 0;

        }
        private void addItems2(string items)
        {
            if (Dat_StopDisplay_checkBox.Checked == true) return;
            if (HUANHANG_checkBox1.Checked) Dat_Rec_TextBox1.AppendText(items "\r\n");   //appendtext代替 =往字符串中添加新字符串
            else                            Dat_Rec_TextBox1.AppendText(items);
            //CALC_PRO calc = new CALC_PRO();
            //Dat_Rec_TextBox1.AppendText(calc.UniCodeToString(items));
            Rec_Size = Rec_Size items.Length;
           
            this.SetText_Rec(Rec_Size.ToString());                              //子线程调用控件Rec_Count_label,显示接收字符数

        }
        //跨线程调用控件Rec_Count_label，方法
        private void SetText_Rec(string text)
        {
            if (this.Rec_Count_label.InvokeRequired)                       //当主线程调用其所在的方法时返回“False”，当子线程调用其所在的方法时返回“True”。
            {
                SetTextCallback d = new SetTextCallback(SetText_Rec);
                this.Invoke(d, new object[] { text });
            }
            else
            {
                this.Rec_Count_label.Text = text;
            }
        }
        //&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&//
        /********************串口发送数据*********************************/
        public void RS232_SendData(Boolean bools, string str)
        {
            string caption = "出错了";

            if (str_RS232_Flag == "verfiy_err")
            {
                MessageBox.Show("校验出错,请复位计数。", caption);
                return;
            }
            else if (str_RS232_Flag == "start_err")
            {
                MessageBox.Show("数据包头字节错误,请复位计数。", caption);
                return;
            }
           

            if (!serialPort1.IsOpen)
            {
                MessageBox.Show("请先打开串口。", caption);
                return;
            }
           

            if (bools == true)                  //十六进制发送模式
            {  
                try
                {
                    CALC_PRO calc = new CALC_PRO();
                    byte[] sendbuf = calc.HexStringToByteArray(str);
                    pictureBox4.Visible = false;
                    pictureBox3.Visible = true;

                    serialPort1.Write(sendbuf, 0, sendbuf.Length);                          //TODO：需要考虑空格和0~9和A~F之外的字符处理？？？
                    Send_Size = Send_Size sendbuf.Length;
                }
                catch
                {
                    MessageBox.Show("数据输入错误，请检查字节...");
                    if (timer1.Enabled) timer1.Enabled = false;
                }

            }
            else
            {
                pictureBox4.Visible = false;
                pictureBox3.Visible = true;
                serialPort1.Write(str);   //文本发送模式
                Send_Size = Send_Size str.Length;
               
            }
            send_Count_label.Text = Send_Size.ToString();                                       //显示发送字节数
            pictureBox3.Visible = false;
            pictureBox4.Visible = true;
        }
      
        /********************串口接收数据*********************************/
        private void serialPort1_Received(object sender, SerialDataReceivedEventArgs e)
        {
            int FLAG_BYTE=0;
            if (radioButton12.Checked == true)      FLAG_BYTE = 0X25;
            else if (radioButton11.Checked == true) FLAG_BYTE = 0X20;

                if (Dat_Rec_checkBox1.Checked == true)                              //十六进制接收
                {
                    int size = serialPort1.BytesToRead;                             //读取缓冲区字节数
                    byte[] sum = new byte[5];
                    byte[] buffer = new byte[size];                                 // 创建字节数组
                    Int32 temp = 0, n = 0;

                    Rec_Size = Rec_Size size;                                     //用于显示总字节数

                    Rec_Size_Temp1 = Rec_Size_Temp1 size;                         //用于帧换行

                    serialPort1.Read(buffer, 0, size);
                    HandleSerial1 data = new HandleSerial1(addItems1);
                    this.Invoke(data, buffer);                                      //在拥有此控件的基础窗口句柄的线程上执行委托。

                    //////////////////////////////////////////////////////////////////////////////////////////
                    for (int i = 0; i < size; i = 1) Rec_Buffer_Byte[i Rec_Size_Temp] = buffer[i];
                    Rec_Size_Temp = Rec_Size_Temp size;                           //用于校验

                    this.SetText_Rec(Rec_Size.ToString());                           //子线程调用控件Rec_Count_label，显示接收字节数

                    if (RTC_Calib_Send_Flag != 0)
                    {
                        if (Rec_Size_Temp < 19) return;
                    }
                    else
                    {
                        if (Rec_Size_Temp < Convert.ToByte(DataSize_numericUpDow3.Value)) return;
                    }
                    for (int i = 0; i < Rec_Size_Temp - 2; i = 1)
                    {
                        CALC_PRO calc = new CALC_PRO();
                        if (RTC_Calib_Send_Flag != 0)
                        {
                            if (Rec_Buffer_Byte[i] != 0X68) continue;      //查找数据包头字节，头字节不对继续往下找
                            if (Rec_Buffer_Byte[i 1] != FLAG_BYTE) break;        //查找数据包第二个字节，第二个字节不对则退出
                            temp = 10 i;
                            n = i 2;
                            sum = calc.DataVerify(Rec_Buffer_Byte, i 2, temp, "总异或");
                        }
                        else
                        {
                            if (Rec_Buffer_Byte[i] != ((calc.HexStringToByteArray(RecData_start_textBox.Text))[0])) continue;   //查找数据包头字节，头字节不对继续往下找
                            if (Rec_Buffer_Byte[i 1] != ((calc.HexStringToByteArray(RecData_two_textBox.Text))[0])) break;        //查找数据包第二个字节，第二个字节不对则退出
                            temp = Convert.ToInt32(DataVerify__Size_numericUpDown.Value);    //转换校验字节数输入值
                            temp = temp i;
                            n = i;
                            sum = calc.DataVerify(Rec_Buffer_Byte, i, temp, domainUpDown2.Text);
                        }
                    }

                    if (RTC_Calib_Send_Flag != 0)                                  //RTC校准功能
                    {
                        CALC_PRO calc = new CALC_PRO();

                        if (sum[0] != Rec_Buffer_Byte[temp 0])
                        {
                            if ((Rec_Buffer_Byte[n 3] == 0x3D) && (Rec_Buffer_Byte[n 4] == 0xAA))
                            {
                                RTC_Calib_Output_Flag = Rec_Buffer_Byte[n 5];
                                RTC_Calib_Add_Flag = Rec_Buffer_Byte[n 6];
                                RTC_Calib_Value = (int)Rec_Buffer_Byte[n 7] << 8 | (int)Rec_Buffer_Byte[n 8];
                                HandleSerial3 data3 = new HandleSerial3(addItems3);
                                this.Invoke(data3, RTC_Calib_Value);                                      //在拥有此控件的基础窗口句柄的线程上执行委托。
                            }
                        }
                        Rec_Size_Temp = 0;
                        return;
                    }

                    if (DataVerify_checkBox.Checked == false) { Rec_Size_Temp = 0; return; }                 //如果不需要校验

                    if (temp == 0)                       //没找到数据包头两个字节
                    {
                        str_RS232_Flag = "start_err";
                        Error_ci ;

                        Console.Beep(3000, 1500);
                    }
                    else                                //校验比较
                    {
                        for (int k = 0; k < sum[4]; k )
                        {
                            if (sum[k] != Rec_Buffer_Byte[temp k])
                            {
                                str_RS232_Flag = "verfiy_err";
                                Error_ci ;

                                Console.Beep(3000, 1500);
                                break;
                            }
                            else
                            {
                                str_RS232_Flag = "run";

                            }
                        }
                    }
                    Rec_Size_Temp = 0;

                    //////////////////////////////////////////////////////////////////////////
                }
                else                                                                //文本接收
                {
                    HandleSerial2 str = new HandleSerial2(addItems2);
                    this.Invoke(str, serialPort1.ReadExisting());
                }
        }