zoukankan      html  css  js  c++  java
  • 有人物联网调试过程

    修改成偶校验的命令    01 06 00 0B 00 04 F9 CB   其中01 表示地址   后4位为校验码,改为偶校验,就能在有人的平台了(有人平台说他们支持CRC)
     
    偶校验的代码
     public class CRC
        {
            #region CRC16
            public static byte[] CRC16(byte[] data)
            {
                int len = data.Length;
                if (len > 0)
                {
                    ushort crc = 0xFFFF;
    
                    for (int i = 0; i < len; i++)
                    {
                        crc = (ushort)(crc ^ (data[i]));
                        for (int j = 0; j < 8; j++)
                        {
                            crc = (crc & 1) != 0 ? (ushort)((crc >> 1) ^ 0xA001) : (ushort)(crc >> 1);
                        }
                    }
                    byte hi = (byte)((crc & 0xFF00) >> 8); //高位置
                    byte lo = (byte)(crc & 0x00FF); //低位置
    
                    return new byte[] { hi, lo };
                }
                return new byte[] { 0, 0 };
            }
            #endregion
    
            #region ToCRC16
            public static string ToCRC16(string content)
            {
                return ToCRC16(content, Encoding.UTF8);
            }
    
            public static string ToCRC16(string content, bool isReverse)
            {
                return ToCRC16(content, Encoding.UTF8, isReverse);
            }
    
            public static string ToCRC16(string content, Encoding encoding)
            {
                return ByteToString(CRC16(encoding.GetBytes(content)), true);
            }
    
            public static string ToCRC16(string content, Encoding encoding, bool isReverse)
            {
                return ByteToString(CRC16(encoding.GetBytes(content)), isReverse);
            }
    
            public static string ToCRC16(byte[] data)
            {
                return ByteToString(CRC16(data), true);
            }
    
            public static string ToCRC16(byte[] data, bool isReverse)
            {
                return ByteToString(CRC16(data), isReverse);
            }
            #endregion
    
            #region ToModbusCRC16
            public static string ToModbusCRC16(string s)
            {
                return ToModbusCRC16(s, true);
            }
    
            public static string ToModbusCRC16(string s, bool isReverse)
            {
                return ByteToString(CRC16(StringToHexByte(s)), isReverse);
            }
    
            public static string ToModbusCRC16(byte[] data)
            {
                return ToModbusCRC16(data, true);
            }
    
            public static string ToModbusCRC16(byte[] data, bool isReverse)
            {
                return ByteToString(CRC16(data), isReverse);
            }
            #endregion
    
            #region ByteToString
            public static string ByteToString(byte[] arr, bool isReverse)
            {
                try
                {
                    byte hi = arr[0], lo = arr[1];
                    return Convert.ToString(isReverse ? hi + lo * 0x100 : hi * 0x100 + lo, 16).ToUpper().PadLeft(4, '0');
                }
                catch (Exception ex) { throw (ex); }
            }
    
            public static string ByteToString(byte[] arr)
            {
                try
                {
                    return ByteToString(arr, true);
                }
                catch (Exception ex) { throw (ex); }
            }
            #endregion
    
            #region StringToHexString
            public static string StringToHexString(string str)
            {
                StringBuilder s = new StringBuilder();
                foreach (short c in str.ToCharArray())
                {
                    s.Append(c.ToString("X4"));
                }
                return s.ToString();
            }
            #endregion
    
            #region StringToHexByte
            private static string ConvertChinese(string str)
            {
                StringBuilder s = new StringBuilder();
                foreach (short c in str.ToCharArray())
                {
                    if (c <= 0 || c >= 127)
                    {
                        s.Append(c.ToString("X4"));
                    }
                    else
                    {
                        s.Append((char)c);
                    }
                }
                return s.ToString();
            }
    
            private static string FilterChinese(string str)
            {
                StringBuilder s = new StringBuilder();
                foreach (short c in str.ToCharArray())
                {
                    if (c > 0 && c < 127)
                    {
                        s.Append((char)c);
                    }
                }
                return s.ToString();
            }
    
            /// <summary>
            /// 字符串转16进制字符数组
            /// </summary>
            /// <param name="hex"></param>
            /// <returns></returns>
            public static byte[] StringToHexByte(string str)
            {
                return StringToHexByte(str, false);
            }
    
            /// <summary>
            /// 字符串转16进制字符数组
            /// </summary>
            /// <param name="str"></param>
            /// <param name="isFilterChinese">是否过滤掉中文字符</param>
            /// <returns></returns>
            public static byte[] StringToHexByte(string str, bool isFilterChinese)
            {
                string hex = isFilterChinese ? FilterChinese(str) : ConvertChinese(str);
    
                //清除所有空格
                hex = hex.Replace(" ", "");
                //若字符个数为奇数,补一个0
                hex += hex.Length % 2 != 0 ? "0" : "";
    
                byte[] result = new byte[hex.Length / 2];
                for (int i = 0, c = result.Length; i < c; i++)
                {
                    result[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
                }
                return result;
            }
            #endregion
        }
     
  • 相关阅读:
    Hibernate学习(2)- hibernate.cfg.xml详解
    Hibernate学习(1)- 初识
    linux(centos6) 常用操作
    linux(centos6) 下安装 postgresql-9.3.1.tar.gz
    struts2 值栈分析
    struts2 paramsPrepareParamsStack拦截器简化代码(源码分析)
    idea 配置maven
    idea 使用github
    idea 配置svn
    idea 配置tomcat
  • 原文地址:https://www.cnblogs.com/wjx-blog/p/11341385.html
Copyright © 2011-2022 走看看