public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private SerialPort comm = new SerialPort();
string PortName = "COM1"; //串口地址
int BaudRate = 9600; //波特率
int _BytesToRead = 0; //
bool _IsOpen = false;
Timer timer = new Timer(); //定时器
private void button1_Click(object sender, RoutedEventArgs e)
{
timer.Start();
}
void timer_Elapsed(object sender, ElapsedEventArgs e)
{
SendCmd();
}
private void SendCmd()
{
//设备地址
int node = 1;// int.Parse(txtnode.Text);
//执行操作 01：写 03：读
int cmd = 3;// int.Parse(txtcmd.Text);
//寄存器读写位置
int addr = 0;// int.Parse(txtaddr.Text);
//读写位数
int len = 1;// int.Parse(txtlen.Text);
try
{
if(!comm.IsOpen)
comm.Open();
byte stat = (byte)cmd;
//组织协议
byte[] res = SendTrainCyclostyle(node, null, addr, len, stat);
//写
comm.Write(res, 0, res.Length);
}
catch (Exception ex)
{
}
}
#region 校验
private static readonly byte[] aucCRCHi = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40
};
private static readonly byte[] aucCRCLo = {
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
0x41, 0x81, 0x80, 0x40
};
/// <summary>
/// CRC效验
/// </summary>
/// <param name="pucFrame">效验数据</param>
/// <param name="usLen">数据长度</param>
/// <returns>效验结果</returns>
public static int Crc16(byte[] pucFrame, int usLen)
{
int i = 0;
byte ucCRCHi = 0xFF;
byte ucCRCLo = 0xFF;
UInt16 iIndex = 0x0000;
while (usLen-- > 0)
{
iIndex = (UInt16)(ucCRCLo ^ pucFrame[i++]);
ucCRCLo = (byte)(ucCRCHi ^ aucCRCHi[iIndex]);
ucCRCHi = aucCRCLo[iIndex];
}
return (ucCRCHi << 8 | ucCRCLo);
}
#endregion
/// <summary>
/// 主控方式 发送指令模板
/// </summary>
/// <param name="node">节点</param>
/// <param name="data">数据</param>
/// <param name="addr">地址</param>
/// <param name="con">变量各数</param>
/// <param name="stat">功能码</param>
/// <returns></returns>
private static byte[] SendTrainCyclostyle(int node, byte[] data, int addr, int con, byte stat)
{
int crcVal = 0;
byte[] headData = SendTrainHead(node, addr, con, stat); //写首部分数据
byte[] headDataLen = SendTrainBytes(headData, ref con, stat); //计算数据的长度，有字节则写入。
byte[] res = new byte[headDataLen.Length + con + 2];
headDataLen.CopyTo(res, 0);
if ((stat == MB_WRITE_MULTIPLE_REGS) || (stat == MB_WRITE_MULTIPLE_COILS))
Array.Copy(data, 0, res, headDataLen.Length, con); //把数据复制到数据中
crcVal = Crc16(res, res.Length - 2);
res[res.Length - 2] = (byte)(crcVal & 0xFF);
res[res.Length - 1] = (byte)(crcVal >> 8);
return res;
}
/// <summary>
/// 首部分数据 node:节点
/// </summary>
/// <param name="addr">寄存器地址</param>
/// <param name="len">数据长度，或单个数据</param>
/// <param name="stat"></param>
/// <returns></returns>
private static byte[] SendTrainHead(int node, int addr, int len, byte stat)
{
byte[] head = new byte[6];
head[0] = Convert.ToByte(node);
head[1] = stat;
head[2] = (byte)(addr >> 8);
head[3] = (byte)(addr & 0xFF);
head[4] = (byte)(len >> 8);
head[5] = (byte)(len & 0xFF);
return head;
}
#region 常量定义
public const byte MB_READ_COILS = 0x01; //读线圈寄存器
public const byte MB_READ_DISCRETE = 0x02; //读离散输入寄存器
public const byte MB_READ_HOLD_REG = 0x03; //读保持寄存器
public const byte MB_READ_INPUT_REG = 0x04; //读输入寄存器
public const byte MB_WRITE_SINGLE_COIL = 0x05; //写单个线圈
public const byte MB_WRITE_SINGLE_REG = 0x06; //写单寄存器
public const byte MB_WRITE_MULTIPLE_COILS = 0x0f; //写多线圈
public const byte MB_WRITE_MULTIPLE_REGS = 0x10; //写多寄存器
private const int MB_MAX_LENGTH = 1200; //最大数据长度
private const int MB_SCI_MAX_COUNT = 15; //指令管道最大存放的指令各数
private const int MB_MAX_REPEAT_COUNT = 3; //指令最多发送次数
#endregion
/// <summary>
/// 计算数据长度 并在0x0f,0x10功能下 加载字节数
/// </summary>
/// <param name="arr"></param>
/// <param name="len"></param>
/// <param name="stat"></param>
/// <returns></returns>
private static byte[] SendTrainBytes(byte[] arr, ref int len, byte stat)
{
byte[] res;
switch (stat)
{
default: len = 0; break;
case MB_READ_COILS:
case MB_READ_DISCRETE:
case MB_READ_HOLD_REG:
case MB_READ_INPUT_REG:
case MB_WRITE_SINGLE_COIL:
case MB_WRITE_SINGLE_REG:
len = 0;
break;
case MB_WRITE_MULTIPLE_COILS:
len = (len % 8 == 0) ? (len / 8) : (len / 8 + 1);
res = new byte[arr.Length + 1];
arr.CopyTo(res, 0);
res[arr.Length] = (byte)(len);
arr = res;
break;
case MB_WRITE_MULTIPLE_REGS:
len *= 2;
res = new byte[arr.Length + 1];
arr.CopyTo(res, 0);
res[arr.Length] = (byte)len; //把字节写入数据最后位置
arr = res;
break;
}
return arr;
}
private static byte[] SendTrainHead(int node, int addr, int len, int stat)
{
byte[] head = new byte[6];
head[0] = Convert.ToByte(node);
head[1] = (byte)(stat&0xFF);
head[2] = (byte)(addr >> 8);
head[3] = (byte)(addr & 0xFF);
head[4] = (byte)(len >> 8);
head[5] = (byte)(len & 0xFF);
return head;
}
private void comm_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
//comm.PortName = "COM1";
try
{
if (comm.IsOpen)
{
//comm.Open();
byte [] res = new byte[200];
int buffLen = comm.BytesToRead;
byte[] rBuff;
comm.Read(res, 0, buffLen);
string printStr ="值 ：";
if (res[1] == 3)
{
if (Crc16(res, res.Length) == 0)
{
rBuff = new byte[buffLen];
Array.Copy(res, rBuff, buffLen);
int lenght = int.Parse(rBuff[2].ToString())*2;
for (int i = 0; i < lenght; i++)
{
//string hexStr = rBuff[3 + i].ToString() + Convert.ToString(rBuff[3 + ++i], 16);
double temp = ByteConvertDouble(rBuff[3 + i], rBuff[3 + ++i]);// Convert.ToInt32(hexStr, 16) * 0.1d;
if (temp < 10)
{
//temp = 1;
}
printStr += temp + " : ";
}
Dispatcher.Invoke(new Action(()=>{
txtbValue.Text = printStr;
//MessageBox.Show("数据接收成功！" + printStr, "系统提示");
}));
}
}
//string str = comm.ReadLine();
//byte[] data = Convert.FromBase64String(str);
//comm.Close();
}
}
catch (Exception ex)
{
}
}
/// <summary>
/// 数值转换
/// </summary>
/// <param name="h">16进制 高位</param>
/// <param name="l">10进制 低位</param>
/// <returns></returns>
private double ByteConvertDouble(byte h, byte l)
{
string hexStr = h.ToString() + Convert.ToString(l, 16);
double temp = Convert.ToInt32(hexStr, 16) * 0.1d;
return temp;
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
//设置接收事件
comm.DataReceived -= new SerialDataReceivedEventHandler(comm_DataReceived);
comm.DataReceived += new SerialDataReceivedEventHandler(comm_DataReceived);
comm.PortName = PortName;
//comm.DataBits = 1;
comm.BaudRate = BaudRate;
comm.NewLine = System.Environment.NewLine;
comm.RtsEnable = false;
comm.ReadTimeout = 5000;
comm.WriteTimeout = 2000;
timer.Interval = 1000;
timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
timer.AutoReset = true;
timer.Enabled = true;
}
private void btnStop_Click(object sender, RoutedEventArgs e)
{
timer.Stop();
}
}
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