Exemplo n.º 1
0
        private void Port_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            byte[] readBuffer = new byte[12];
            byte[] dataBuffer = new byte[12];
            int    dataLength = 0;

            ushort   crcData;
            crcClass crcValue = new crcClass();          //校验
            int      bytes    = serialPort1.BytesToRead; //查看缓冲区内的字符数

            while ((bytes + dataLength) >= 12)
            {                                                     //数据量大于12,开始处理数据
                serialPort1.Read(readBuffer, 0, 12 - dataLength); //从串口读取数据,放到readBuffer里
                for (int i = dataLength; i < 12; i++)
                {
                    dataBuffer[i] = readBuffer[i - dataLength];
                }
                if (dataBuffer[0] == 0x55 && dataBuffer[11] == 0xaa)
                {                                                             //头码和尾码正确,则继续
                    crcData = (ushort)(dataBuffer[9] * 256 + dataBuffer[10]); //求得校验码
                    for (int i = 0; i < 11; i++)
                    {
                        dataBuffer[i] = dataBuffer[i + 1];//去掉dateBuffer[12]中的第1位(头码),只取后11位,得到dateBuffer[11]
                    }
                    if (crcValue.usMBCRC16(dataBuffer, 8) == crcData)
                    {//CRC校验成功,进行数据处理   头码移除了,dataBuffer【0】为命令
                        Thread.Sleep(1000);

                        dataLength = 0;//移除所有数据
                    }
                    else
                    {//CRC校验没有成功,移除第一个数据
                        dataLength = 11;
                    }
                }
                else
                {//头码和尾码不正确,移除第一个数据
                    for (int i = 0; i < 11; i++)
                    {
                        dataBuffer[i] = dataBuffer[i + 1];
                        dataLength    = 11;
                    }
                }
                bytes = serialPort1.BytesToRead; //查看缓冲区内的字符数
            }
        }
Exemplo n.º 2
0
        //点击发送按钮,如果串口打开,发送数据
        private void SendClick_Click(object sender, EventArgs e)
        {
            byte[]   crcData  = new byte[8];  //有效命令为8位数组
            byte[]   sendData = new byte[12]; //发送12个字节的数组
            ushort   temp;
            crcClass crcValue = new crcClass();

            sendData[0]  = 0x55; //头码,第1位
            sendData[11] = 0xaa; //尾码,第12位

            //发送数据第2位决定转向
            if (Direction.Text == "收缩")
            {
                crcData[0] = sendData[1] = 0X01;//顺时针发送0X01,收缩
            }
            else if (Direction.Text == "拉伸")
            {
                crcData[0] = sendData[1] = 0X02;//逆时针发送0X02,拉伸
            }
            else
            {
                crcData[0] = sendData[1] = 0X03;//逆时针发送0X03,往复模式
            }
            //发送数据第3位决定速度
            if (Speed.Text == "10.0")
            {
                crcData[1] = sendData[2] = 0x00;//转化为16进制整数,速度为1cm/s
            }
            else
            {
                crcData[1] = sendData[2] = 0x01;//转化为16进制整数,速度为1.18cm/s
            }
            //发送数据第4到8位决定步数
            double x       = Convert.ToDouble(StepNum.Text) * 770; //移动距离转化为步数
            uint   stepnum = Convert.ToUInt32(x);                  //将步数转化为整数类型

            string message = Convert.ToString(stepnum);

            MessageBox.Show("电机" + Direction.Text + message + "步。", "提示");//显示步数转化的结果
            //步数从0到99999
            crcData[2] = sendData[3] = Convert.ToByte(stepnum % 10);
            crcData[3] = sendData[4] = Convert.ToByte((stepnum % 100 - stepnum % 10) / 10);
            crcData[4] = sendData[5] = Convert.ToByte((stepnum % 1000 - stepnum % 100) / 100);
            crcData[5] = sendData[6] = Convert.ToByte((stepnum % 10000 - stepnum % 1000) / 1000);
            crcData[6] = sendData[7] = Convert.ToByte((stepnum % 100000 - stepnum % 10000) / 10000);

            //发送数据第9位决定往复次数
            uint cyclenum = Convert.ToUInt32(CycleNum.Text);//将往复次数转化为整数类型

            crcData[7] = sendData[8] = Convert.ToByte(cyclenum);

            //发送数据第10、11位是crc检验位
            temp         = crcValue.usMBCRC16(crcData, 8);
            sendData[10] = (byte)temp;
            temp       >>= 8;
            sendData[9]  = (byte)temp;



            //发送数据
            if (serialPort1.IsOpen)
            {
                try
                {
                    ReceiveDate.Text += "电机" + Direction.Text + "," + "距离为" + StepNum.Text + "毫米。" + "\r\n";
                    serialPort1.Write(sendData, 0, 12);//写入数据
                }
                catch
                {
                    MessageBox.Show("串口数据写入错误", "错误");
                    serialPort1.Close();
                    OpenCom.Enabled  = true;
                    CloseCom.Enabled = false;//关闭串口后只能点击打开串口
                }
            }
        }