C# 多串口通信的诡异问题。请大神帮我分析分析。

yinyi4120 2014-08-24 04:24:22
工控机通过多串口卡接收串口数据。
总共接收六个串口数据。其中，COM1---COM4接收数据的协议时一样的，共10个byte位。前8位为数据位，第9位为CRC校验位，第10位位停止位，FF。
而COM5---COM6接收的数据协议时一样的，共8个byte位，前6位位数据位，第7位为CRC校验位，第8位为停止位，FF。
数据接收采用事件触发形式。具体实现代码如下。


 public void _serialPort_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e)

        {

            //禁止接收事件时直接退出

            if (ReceiveEventFlag)

            {

                return;

            }

            try

            {

                string readstr = null;

                int n = _serialPort.BytesToRead;

                byte[] buff = new byte[n];

                _serialPort.Read(buff, 0, n);

                readstr = ConvertByteArrayToString(buff);

                buffer_JZ.AddRange(strToToHexByte(readstr));

                while ((buffer_JZ.Count >= 10) && (buffer_JZ[9] == 255))

                {



                    if (buffer_JZ[8] != CRC_CHECK(strToToHexByte(readstr), 8))

                    {

                        buffer_JZ.RemoveAt(0);

                        continue;

                    }

                    buffer_JZ.CopyTo(0, binary_data_1, 0, 10);

                    DataReceived(sender, e, binary_data_1);

                    buffer_JZ.RemoveRange(0, 10);

                    

                }

            }

            catch (Exception ex)

            {

                Console.WriteLine(ex.ToString());

            }

这是COM1---COM4的接收函数


 void _serialPort_DataReceived_LG(object sender, SerialDataReceivedEventArgs e)

        {

            

            //禁止接收事件时直接退出

            if (ReceiveEventFlag)

            {                

                return;

            }

            try

            {

                string readstr = null;

                int n = _serialPort.BytesToRead;

                byte[] buff = new byte[n];

                _serialPort.Read(buff, 0, n);

                readstr = ConvertByteArrayToString(buff);

                buffer_LG.AddRange(strToToHexByte(readstr));

                while ((buffer_LG.Count >= 8) && (buffer_LG[7] == 255))

                {



                    if (buffer_LG[6] != CRC_CHECK(strToToHexByte(readstr), 6))

                    {

                        buffer_LG.RemoveAt(0);

                        continue;

                    }

                    buffer_LG.CopyTo(0, binary_data_1, 0, 8);

                    DataReceived(sender, e, binary_data_2);

                    buffer_LG.RemoveRange(0, 8);

                }

            }

            catch (Exception ex)

            {

                Console.WriteLine(ex.ToString());

               // throw ex;

            }

        }

这是COM5---COM6的接收函数。
在主窗体的代码如下：


            JZ_RecePort1.openPort();

            JZ_RecePort2.openPort();

            JZ_RecePort3.openPort();

            JZ_RecePort4.openPort();

            LG_RecePort1.openPort();

            LG_RecePort2.openPort();

            

            // 接收响应事件

            LG_RecePort1.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(LG_RecePort1_DataReceived_LG);

            LG_RecePort2.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(LG_RecePort2_DataReceived_LG);

            JZ_RecePort1.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(JZ_RecePort1_DataReceived_JZ);

            JZ_RecePort2.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(JZ_RecePort2_DataReceived_JZ);

            JZ_RecePort3.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(JZ_RecePort3_DataReceived_JZ);

            JZ_RecePort4.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(JZ_RecePort4_DataReceived_JZ);

接收响应


  public void JZ_RecePort1_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)

        {

            //判断数据来自哪片CPU

              if ((bits[0] & 0x01) == 0)

              {

                  db_opera.Save_CPU_data(bits, "Table_CPU1_1", Rece_DataSet);  

              }

              else

              {

                  db_opera.Save_CPU_data(bits, "Table_CPU1_2", Rece_DataSet);

              }     

        }

        public void JZ_RecePort3_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)

        {

            if ((bits[0] & 0x01) == 0)

            {

                db_opera.Save_CPU_data(bits, "Table_CPU3_1", Rece_DataSet);



            }

            else

            {

                db_opera.Save_CPU_data(bits, "Table_CPU3_2", Rece_DataSet);

            } 

        }

        public void LG_RecePort1_DataReceived_LG(object sender, SerialDataReceivedEventArgs e, byte[] bits)

        {

            if ((bits[0] & 0x01) == 0)

            {

                db_opera.Save_LG_data(bits, "Table_LG1_1", Rece_DataSet);



            }

            else

            {

                db_opera.Save_LG_data(bits, "Table_LG1_2", Rece_DataSet);

            }

        }

        public void LG_RecePort2_DataReceived_LG(object sender, SerialDataReceivedEventArgs e, byte[] bits)

        {

                        if ((bits[0] & 0x01) == 0)

            {

                db_opera.Save_LG_data(bits, "Table_LG2_1", Rece_DataSet);

            }

            else

            {

                db_opera.Save_LG_data(bits, "Table_LG2_2", Rece_DataSet);

            }

        }   // 串口COM1---COM6接收数据

现在的问题是，COM1---COM4能正确接收数据，而COM5---COM6的事件无法触发，或者有时候接收到COM5,或者COM6，反正COM5与COM6数据不能同时接收上来。
且有时候接收COM1---COM4的函数会接收到COM5---COM6的数据。
求大神帮我看看。感激不尽。



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於黾 2014-08-25
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绑定的事件函数和贴出来的函数名称都不一样啊
rtdb 2014-08-25
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while ((buffer_JZ.Count >= 10) && (buffer_JZ[9] == 255)) 你这句明显只对10个bytes生效，那COM5---COM6的8bytes就进不去了
yinyi4120 2014-08-25
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引用 7 楼 Z65443344 的回复:
_serialPort_DataReceived_JZ _serialPort_DataReceived_LG 这两个又是干嘛的,在哪里调用了? 这明显是2个事件,但是没有挂在任何控件下啊.
这连个事件时在串口类中定义的。代码如下 


        SerialPort _serialPort = null;
        //定义委托
        public delegate void SerialPortDataReceiveEventArgs(object sender, SerialDataReceivedEventArgs e, byte[] bits);
        //定义接收数据事件
        public event SerialPortDataReceiveEventArgs DataReceived;

        public void _serialPort_DataReceived_LG(object sender, SerialDataReceivedEventArgs e)
        {
            //禁止接收事件时直接退出
            if (ReceiveEventFlag)
            {
                return;
            }
            try
            {
                string readstr = null;
                int n = _serialPort.BytesToRead;
                byte[] buff = new byte[n];
                Console.WriteLine("ok_lg");
                _serialPort.Read(buff, 0, n);
                readstr = ConvertByteArrayToString(buff);
                Console.WriteLine(readstr);
                buffer_LG.AddRange(strToToHexByte(readstr));
                while ((buffer_LG.Count >= 8) && (buffer_LG[7] == 255))
                {

                    if (buffer_LG[6] != CRC_CHECK(strToToHexByte(readstr), 6))
                    {
                        buffer_LG.RemoveAt(0);
                        continue;
                    }
                    buffer_LG.CopyTo(0, binary_data_2, 0, 8);
                    DataReceived(sender, e, binary_data_2);
                    buffer_LG.RemoveRange(0, 8);                    
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
        }
        #endregion
        #region 接收逻辑单元串口数据事件
        /// <summary>
        /// 接收逻辑单元串口数据事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void _serialPort_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e)
        {
            
            //禁止接收事件时直接退出
            if (ReceiveEventFlag)
            {                
                return;
            }
            try
            {
                string readstr = null;
                int n = _serialPort.BytesToRead;
                byte[] buff = new byte[n];
                _serialPort.Read(buff, 0, n);
                Console.WriteLine("OK");
                readstr = ConvertByteArrayToString(buff);
                Console.WriteLine(readstr+"\t\n");
                buffer_JZ.AddRange(strToToHexByte(readstr));
                while ((buffer_JZ.Count >= 10) && (buffer_JZ[9] == 255))
                {

                    if (buffer_JZ[8] != CRC_CHECK(strToToHexByte(readstr), 8))
                    {
                        buffer_JZ.RemoveAt(0);
                        continue;
                    }
                    buffer_JZ.CopyTo(0, binary_data_1, 0, 10);
                    DataReceived(sender, e, binary_data_1);
                    buffer_JZ.RemoveRange(0, 10);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
               // throw ex;
            }
        }
上面两个事件是在串口类中，在主函数中实例化类的对象
於黾 2014-08-25
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_serialPort_DataReceived_JZ _serialPort_DataReceived_LG 这两个又是干嘛的,在哪里调用了? 这明显是2个事件,但是没有挂在任何控件下啊.
yinyi4120 2014-08-25
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引用 4 楼 Z65443344 的回复:
绑定的事件函数和贴出来的函数名称都不一样啊
是一样的。 

 public void JZ_RecePort1_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
 public void JZ_RecePort2_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
 public void JZ_RecePort3_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
 public void JZ_RecePort4_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
 public void LG_RecePort1_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
 public void LG_RecePort2_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)


JZ_RecePort1.DataReceived += new Port_Opera.SerialPortDataReceiveEventArg(JZ_RecePort1_DataReceived_JZ);            JZ_RecePort2.DataReceived += new Port_Opera.SerialPortDataReceiveEventArg(JZ_RecePort2_DataReceived_JZ);            JZ_RecePort3.DataReceived += new Port_Opera.SerialPortDataReceiveEventArg(JZ_RecePort3_DataReceived_JZ);            JZ_RecePort4.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(JZ_RecePort4_DataReceived_JZ);

LG_RecePort1.DataReceived += new Port_Opera.SerialPortDataReceiveEventAr(LG_RecePort1_DataReceived_LG);            LG_RecePort2.DataReceived += new Port_Opera.SerialPortDataReceiveEventArgs(LG_RecePort2_DataReceived_LG);
yinyi4120 2014-08-25
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引用 3 楼 rtdb 的回复:
while ((buffer_JZ.Count >= 10) && (buffer_JZ[9] == 255)) 你这句明显只对10个bytes生效，那COM5---COM6的8bytes就进不去了
有两个串口接收函数，之处的代码是接收串口1-4的， 接收串口5-6的代码上面也贴出来了 while ((buffer_LG.Count >= 8) && (buffer_LG[7] == 255)) 麻烦大神仔细给我分析下呢
yinyi4120 2014-08-24
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人工顶一下！
yinyi4120 2014-08-24
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public void JZ_RecePort2_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
        {
            //判断数据来自哪片CPU
              if ((bits[0] & 0x01) == 0)
              {
                  db_opera.Save_CPU_data(bits, "Table_CPU2_1", Rece_DataSet);  
              }
              else
              {
                  db_opera.Save_CPU_data(bits, "Table_CPU2_2", Rece_DataSet);
              }     
        }



public void JZ_RecePort4_DataReceived_JZ(object sender, SerialDataReceivedEventArgs e, byte[] bits)
        {
            //判断数据来自哪片CPU
              if ((bits[0] & 0x01) == 0)
              {
                  db_opera.Save_CPU_data(bits, "Table_CPU4_1", Rece_DataSet);  
              }
              else
              {
                  db_opera.Save_CPU_data(bits, "Table_CPU4_2", Rece_DataSet);
              }     
        }
COM2和COM4的接收响应。之前不知怎么的没有贴上来
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