少有人走的路勇哥手里一个无刷电机，采用485的modelbus crc16协议来控制。因此需要一个计算校验和的工具。
源码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace CRC16_Tool
{
public partial class CRC16_Tool : Form
{
protected byte[] auchCRCHi = new byte[]{
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};
protected uint[] auchCRCLo = new uint[]{
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};
public uint My_CRC16_Calcu(byte[] puchMsg, uint usDataLen)
{
uint uchCRCHi = 0xFF;
uint uchCRCLo = 0xFF;
long uIndex;
uint i = 0;
// while ((usDataLen--)!=0)
for (i = 0; i < usDataLen; i++)
{
uIndex = uchCRCHi ^ puchMsg[i];
uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
uchCRCLo = auchCRCLo[uIndex];
}
return ((uchCRCHi << 8) | (uchCRCLo));
}
public static int GetLength(string str)
{
if (str.Length == 0)
return 0;
ASCIIEncoding ascii = new ASCIIEncoding();
int tempLen = 0;
byte[] s = ascii.GetBytes(str);
for (int i = 0; i < s.Length; i++)
{
if ((int)s[i] == 63)
{
tempLen += 2;
}
else
{
tempLen += 1;
}
}
return tempLen;
}
public CRC16_Tool()
{
InitializeComponent();
}
private void button_calcu_Click(object sender, EventArgs e)
{
if (textBox_input.Text == "")
{
MessageBox.Show("请输入modbus命令！", "警告");
}
else
{
byte[] Data = new byte[100];//定义一个数组用来存储命令 十六进制存储
/************如果用下面的，则不要注释这两个*************************************************/
//int i; //定义一个变量
//uint cnt = 0; //定义一个计数变量，用来储存 命令 字节数
int aa = GetLength(textBox_input.Text); //获取文本框内容的字符串长度，中文2，英文数字1
uint i_want_cnt = 0;
int real_cnt = 0; ;
string str = ""; //声明一个字符串变量，用来存储去除空格后的命令字符串
for (int g = 0; g < aa; g++) //遍历文本框的内容
{
if (textBox_input.Text.Substring(g, 1) != " ") //去除空格，保存除空格外的字符串
{
str += Convert.ToString(textBox_input.Text.Substring(g, 1));
i_want_cnt++;
if (i_want_cnt % 2==0)
{
Data[real_cnt++]= Convert.ToByte(str.Substring((int)(real_cnt-1)*2, 2), 16);
}
}
}
uint CRC_Calcu = My_CRC16_Calcu(Data, (uint)real_cnt);
textBox_ouput.Text = Convert.ToString(((byte)(CRC_Calcu >> 8)), 16).ToUpper().PadLeft(2, '0');
textBox_ouput.Text += Convert.ToString((byte)CRC_Calcu, 16).ToUpper().PadLeft(2, '0');
/************这个是可以的*************************************************/
////else
////{
//// byte[] Data = new byte[100];//定义一个数组用来存储命令 十六进制存储
//// int i; //定义一个变量
//// uint cnt = 0; //定义一个计数变量，用来储存 命令 字节数
//// int aa = GetLength(textBox_input.Text); //获取文本框内容的字符串长度，中文2，英文数字1
//// string str = ""; //声明一个字符串变量，用来存储去除空格后的命令字符串
//// for (int g = 0; g < aa; g++) //遍历文本框的内容
//// {
//// if (textBox_input.Text.Substring(g, 1) != " ") //去除空格，保存除空格外的字符串
//// str += Convert.ToString(textBox_input.Text.Substring(g, 1));
//// }
//// for (i = 0; i < str.Length / 2; i++) //把
//// {
//// Data[i] = Convert.ToByte(str.Substring(i * 2, 2), 16);
//// cnt++;
//// }
//// uint CRC_Calcu = My_CRC16_Calcu(Data, cnt);
//// textBox_ouput.Text = Convert.ToString(((byte)(CRC_Calcu >> 8)), 16).ToUpper().PadLeft(2, '0');
//// textBox_ouput.Text += Convert.ToString((byte)CRC_Calcu, 16).ToUpper();
/************这个是可以的*************************************************/
}
}
private void button_clear_Click(object sender, EventArgs e)
{
textBox_ouput.Clear();
textBox_input.Clear();
}
private void CRC16_Tool_KeyPress(object sender, KeyPressEventArgs e)
{
if (textBox_input.Text == "")
{
MessageBox.Show("请输入modbus命令！", "警告");
}
else
{
byte[] Data = new byte[100];//定义一个数组用来存储命令 十六进制存储
int i; //定义一个变量
uint cnt = 0; //定义一个计数变量，用来储存 命令 字节数
int aa = GetLength(textBox_input.Text); //获取文本框内容的字符串长度，中文2，英文数字1
string str = ""; //声明一个字符串变量，用来存储去除空格后的命令字符串
for (int g = 0; g < aa; g++) //遍历文本框的内容
{
if (textBox_input.Text.Substring(g, 1) != " ") //去除空格，保存除空格外的字符串
str += Convert.ToString(textBox_input.Text.Substring(g, 1));
}
for (i = 0; i < str.Length / 2; i++) //把
{
Data[i] = Convert.ToByte(str.Substring(i * 2, 2), 16);
cnt++;
}
uint CRC_Calcu = My_CRC16_Calcu(Data, cnt);
textBox_ouput.Text = Convert.ToString(((byte)(CRC_Calcu >> 8)), 16).ToUpper().PadLeft(2, '0');
textBox_ouput.Text += Convert.ToString((byte)CRC_Calcu, 16).ToUpper();
}
}
}
}本文出自勇哥的网站《少有人走的路》wwww.skcircle.com，转载请注明出处！讨论可扫码加群：
