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modbus CRC验证
using System;
using System.Collections.Generic;
using System.Text;
namespace BasicTool
{
/// <summary>
/// 数值转换类
/// </summary>
public class NumberConvert
{
public static string timeCheckToHexStr(double timecheck)
{
string str = "";
int t = Convert.ToInt32(timecheck*10);
str = String.Format("{0:X}", t);
str = str.Substring(str.Length - 2, 2);
return str;
}
/// <summary>
/// 整形数据(时间间隔) 转成 16进制字符串
/// </summary>
/// <param name="sctime"></param>
/// <returns></returns>
public static string scTimeToStr(int sctime)
{
string strsctime = String.Format("{0:X}", sctime);
strsctime = "000" strsctime;
string returestr;
returestr = strsctime.Substring(strsctime.Length - 4, 4);
returestr = strsctime.Substring(strsctime.Length - 4, 2) " ";
returestr = strsctime.Substring(strsctime.Length - 2, 2) " ";
return returestr;
}
/// <summary>
/// 整形数据(端口号)转换成 16进制字符串
/// </summary>
/// <param name="ipport"></param>
/// <returns></returns>
public static string ipPortToStr(int ipport)
{
string returestr = "";
string stripport = String.Format("{0:X}", ipport);
if (stripport.Length < 4)
{
returestr = "0" stripport.Substring(0, 1) " ";
returestr = stripport.Substring(1, 2) " ";
}
else
{
returestr = stripport.Substring(0, 2) " ";
returestr = stripport.Substring(2, 2) " ";
}
return returestr;
}
/// <summary>
/// ip地址 转换成 16进制 字符串
/// </summary>
/// <param name="ipaddress"></param>
/// <returns></returns>
public static string ipAddressToStr(string ipaddress)
{
string str = "";
string[] s = ipaddress.Split('.');
for(int i=0;i<s.Length;i )
{
if(Convert.ToInt16(s[i])<16)
{
str = "0" String.Format("{0:X}", Convert.ToInt32(s[i])) " ";
}
else {
str = String.Format("{0:X}", Convert.ToInt32(s[i])) " ";
}
}
return str;
}
/// <summary>
/// int类型 转换成 byte数组 配合crc校验使用
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
public static byte[] intToHexByte(Int16 num)
{
byte[] b1 = BitConverter.GetBytes(num);
return b1;
}
/// <summary>
/// double类型 转换成 byte 数组
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
public static byte[] doubleToHexByte(double num)
{
byte[] b = new byte[2];
Int16 t = Convert.ToInt16(num);
byte[] b1 = BitConverter.GetBytes(t);
b[0] = b1[1];
b[1] = b1[0];
return b;
}
/// <summary>
/// 字节数组转16进制字符串
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public static string byteToHexStr(byte[] bytes)
{
string returnStr = "";
if (bytes != null)
{
for (int i = 0; i < bytes.Length; i )
{
returnStr = bytes[i].ToString("X2");
}
}
return returnStr;
}
/// <summary>
/// 字符串转16进制字节数组
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
public static byte[] strToToHexByte(string hexString)
{
hexString = hexString.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString = " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i )
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
return returnBytes;
}
}
}