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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace GeneralGommunication
{
public static class ProtocolModbusCommon
{
/// <summary>
/// 把2个byte 转为 uint16
/// </summary>
/// <param name="value"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static UInt16 ToUInt16_Big_Endian(this IEnumerable<byte> value, int startIndex)
{
return (UInt16)((value.ElementAt(startIndex) << 8) | value.ElementAt(startIndex + 1));
}
/// <summary>
/// 把2个byte 转为 uint16
/// </summary>
/// <param name="value"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static UInt16 ToUInt16_Little_Endian(this IEnumerable<byte> value, int startIndex)
{
return (UInt16)((value.ElementAt(startIndex + 1) << 8) | value.ElementAt(startIndex));
}
/// <summary>
/// 把 uint16 大端排序 转为2个byte
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static byte[] GetBytes_Big_endian(this UInt16 value)
{
byte[] b = new byte[2];
b[0] = (byte)(value >> 8);
b[1] = (byte)value;
return b;
}
/// <summary>
/// 把 uint16 小端排序 转为2个byte
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static byte[] GetBytes_Little_Endian(this UInt16 value)
{
byte[] b = new byte[2];
b[0] = (byte)(value);
b[1] = (byte)(value >> 8);
return b;
}
/// <summary>
/// CRC16
/// </summary>
/// <param name="puchMsg">要进行CRC 校验的消息</param>
/// <param name="index">消息在pushMsg的位置</param>
/// <param name="usDataLen">消息字节数</param>
/// <returns></returns>
public static UInt16 CRC16(this IEnumerable<byte> puchFrame, int index, int usLen)
{
return CRC16_normal(puchFrame, index, usLen);
}
public static UInt16 CRC16_normal(this IEnumerable<byte> buf, int index, int len)
{
UInt16 CRC_ReturnValue = 0xffff;
int i = 0, j;
do
{
CRC_ReturnValue ^= buf.ElementAt(index + i);
i++;
j = 8;
do
{
if ((CRC_ReturnValue & 0x01) != 0)
{
CRC_ReturnValue = (UInt16)((CRC_ReturnValue >> 1) ^ 0xa001);
}
else
{
CRC_ReturnValue = (UInt16)(CRC_ReturnValue >> 1);
}
j--;
}
while (j > 0);
len--;
}
while (len > 0);
return CRC_ReturnValue;
}
/// <summary>
/// CRC16
/// </summary>
/// <param name="puchMsg">要进行CRC 校验的消息</param>
/// <param name="index">消息在pushMsg的位置</param>
/// <param name="usDataLen">消息字节数</param>
/// <returns></returns>
public static UInt16 CRC16_fast(this IEnumerable<byte> puchFrame, int index, int usLen)
{
if (usLen <= 0)
return 0;
byte uchCRCHi = 0xFF; /* 高CRC字节初始化 */
byte uchCRCLo = 0xFF; /* 低CRC 字节初始化 */
int iIndex; /* CRC循环中的索引 */
int i = index;
while (true) /* 传输消息缓冲区 */
{
iIndex = uchCRCHi ^ puchFrame.ElementAt(i); /* 计算CRC */
i++;
uchCRCHi = (byte)(uchCRCLo ^ auchCRCHi[iIndex]);
uchCRCLo = auchCRCLo[iIndex];
usLen--;
if (usLen == 0)
break;
}
//错！！！ 高低字节错了, 所以要反转
byte t = uchCRCHi;
uchCRCHi = uchCRCLo;
uchCRCLo = t;
return (UInt16)(uchCRCHi << 8 | uchCRCLo);
}
/* CRC 高位字节值表 */
static 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
};
/* CRC低位字节值表*/
static byte[] auchCRCLo = new byte[]{
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
};
static byte[] crc8_table = new byte[]
{
0x00,0x31,0x62,0x53,0xc4,0xf5,0xa6,0x97,0xb9,0x88,0xdb,0xea,0x7d,0x4c,0x1f,0x2e,
0x43,0x72,0x21,0x10,0x87,0xb6,0xe5,0xd4,0xfa,0xcb,0x98,0xa9,0x3e,0x0f,0x5c,0x6d,
0x86,0xb7,0xe4,0xd5,0x42,0x73,0x20,0x11,0x3f,0x0e,0x5d,0x6c,0xfb,0xca,0x99,0xa8,
0xc5,0xf4,0xa7,0x96,0x01,0x30,0x63,0x52,0x7c,0x4d,0x1e,0x2f,0xb8,0x89,0xda,0xeb,
0x3d,0x0c,0x5f,0x6e,0xf9,0xc8,0x9b,0xaa,0x84,0xb5,0xe6,0xd7,0x40,0x71,0x22,0x13,
0x7e,0x4f,0x1c,0x2d,0xba,0x8b,0xd8,0xe9,0xc7,0xf6,0xa5,0x94,0x03,0x32,0x61,0x50,
0xbb,0x8a,0xd9,0xe8,0x7f,0x4e,0x1d,0x2c,0x02,0x33,0x60,0x51,0xc6,0xf7,0xa4,0x95,
0xf8,0xc9,0x9a,0xab,0x3c,0x0d,0x5e,0x6f,0x41,0x70,0x23,0x12,0x85,0xb4,0xe7,0xd6,
0x7a,0x4b,0x18,0x29,0xbe,0x8f,0xdc,0xed,0xc3,0xf2,0xa1,0x90,0x07,0x36,0x65,0x54,
0x39,0x08,0x5b,0x6a,0xfd,0xcc,0x9f,0xae,0x80,0xb1,0xe2,0xd3,0x44,0x75,0x26,0x17,
0xfc,0xcd,0x9e,0xaf,0x38,0x09,0x5a,0x6b,0x45,0x74,0x27,0x16,0x81,0xb0,0xe3,0xd2,
0xbf,0x8e,0xdd,0xec,0x7b,0x4a,0x19,0x28,0x06,0x37,0x64,0x55,0xc2,0xf3,0xa0,0x91,
0x47,0x76,0x25,0x14,0x83,0xb2,0xe1,0xd0,0xfe,0xcf,0x9c,0xad,0x3a,0x0b,0x58,0x69,
0x04,0x35,0x66,0x57,0xc0,0xf1,0xa2,0x93,0xbd,0x8c,0xdf,0xee,0x79,0x48,0x1b,0x2a,
0xc1,0xf0,0xa3,0x92,0x05,0x34,0x67,0x56,0x78,0x49,0x1a,0x2b,0xbc,0x8d,0xde,0xef,
0x82,0xb3,0xe0,0xd1,0x46,0x77,0x24,0x15,0x3b,0x0a,0x59,0x68,0xff,0xce,0x9d,0xac
};
public static byte CRC8(this IEnumerable<byte> datas, int index, int len)
{
byte crc = 0x00;
while (len > 0)
{
byte d = datas.ElementAt(index);
crc = crc8_table[crc ^ d];
index++;
len--;
}
return (crc);
}
//LRC 计算函数
//buf 全部求和,取反,+1
public static byte LRC8(this IEnumerable<byte> datas, int index, int len)
{
byte lrc = 0;
for (int i = 0; i < len; i++)
{
lrc += datas.ElementAt(i + index);
}
lrc = (byte)(~lrc + 1);
return lrc;
}
#region ASCII 与 HEX 转换
public static byte? Ascii2Hex(this IEnumerable<byte> ascii, int index)
{
string msg = System.Text.Encoding.ASCII.GetString(new byte[] { ascii.ElementAt(index), ascii.ElementAt(index + 1) });
try
{
return (byte)int.Parse(msg, System.Globalization.NumberStyles.HexNumber);
}
catch
{
return null;
}
}
public static byte[] Ascii2Hex(this IEnumerable<byte> ascii, int index, int len)
{
if (len % 2 != 0)
return null;
List<byte> hex = new List<byte>();
for (int i = 0; i < len / 2; i++)
{
string msg = System.Text.Encoding.ASCII.GetString(new byte[] { ascii.ElementAt(index + i * 2), ascii.ElementAt(index + i * 2 + 1) });
if (int.TryParse(msg, System.Globalization.NumberStyles.HexNumber, null, out int d))
{
hex.Add((byte)d);
}
else {
hex.Add(0);
}
}
return hex.ToArray();
}
public static byte[] HexToAscii(this IEnumerable<byte> hex)
{
return HexToAscii(hex, 0, hex.Count());
}
public static byte[] HexToAscii(this IEnumerable<byte> hex, int index, int len)
{
string msg = "";
for (int i = 0; i < len; i++)
{
msg += hex.ElementAt(index + i).ToString("X2");
}
return System.Text.Encoding.ASCII.GetBytes(msg);
}
public static byte[] HexToAscii(this byte hex)
{
string msg = "";
for (int i = 0; i < 1; i++)
{
msg += hex.ToString("X2");
}
return System.Text.Encoding.ASCII.GetBytes(msg);
}
#endregion
#region 调试输出
/// <summary>
/// 调试打印出16进制 例如 3A 30 31 31 30 30 30
/// </summary>
/// <param name="pack"></param>
/// <returns></returns>
public static string ToString_Bytes2Hex(this IEnumerable<byte> pack)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < pack.Count(); i++)
{
sb.Append($"{pack.ElementAt(i):X2} ");
}
return sb.ToString();
}
/// <summary>
/// 调试打印出ascii 例如
/// </summary>
/// <param name="pack"></param>
/// <returns></returns>
public static string ToString_Bytes2Ascii(this IEnumerable<byte> pack)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < pack.Count(); i++)
{
byte b = pack.ElementAt(i);
if (b >= 0x20 && b <= 0x7E)
{
sb.Append((char)b);
}
else {
sb.Append('▯');
}
}
return sb.ToString();
}
public static string ToString_Bytes2HexAndAscii(this IEnumerable<byte> pack)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < pack.Count(); i++)
{
byte b = pack.ElementAt(i);
if (b >= 0x20 && b <= 0x7E)
{
//这个字符可以打印
sb.Append($"{b:X2}({(char)b}) ");
}
else
{
sb.Append($"{b:X2}( ) ");
}
}
return sb.ToString();
}
#endregion
#region u16 to u32 or u16 to float
/// <summary>
/// 大端模式 u16 to u32
/// </summary>
/// <param name="value"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static UInt32 U16ToU32_Big_Endian(this IEnumerable<UInt16> value, int startIndex)
{
return (UInt32)((value.ElementAt(startIndex) << 16) | value.ElementAt(startIndex + 1));
}
/// <summary>
/// 大端模式 u16 to float
/// </summary>
/// <param name="value"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static float U16ToF32_Big_Endian(this IEnumerable<UInt16> value, int startIndex)
{
byte[] bs = new byte[4];
bs[3] = (byte)(value.ElementAt(startIndex) >> 8);
bs[2] = (byte)(value.ElementAt(startIndex));
bs[1] = (byte)(value.ElementAt(startIndex + 1) >> 8);
bs[0] = (byte)(value.ElementAt(startIndex + 1));
float num = BitConverter.ToSingle(bs, 0);
return num;
}
/// <summary>
/// 大端模式 u32 to u16
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static UInt16[] U32ToU16_Big_Endian(this UInt32 value)
{
UInt16[] datas = new UInt16[2];
datas[0] = (UInt16)(value >> 16);
datas[1] = (UInt16)(value);
return datas;
}
/// <summary>
/// 大端模式 float to u16
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static UInt16[] F32ToU16_Big_Endian(this float value)
{
var bs = BitConverter.GetBytes(value);
UInt16[] datas = new UInt16[2];
datas[0] = (UInt16)(bs[3] << 8 | bs[2]);
datas[1] = (UInt16)(bs[1] << 8 | bs[0]);
return datas;
}
/// <summary>
/// 小端模式 u16 to u32
/// </summary>
/// <param name="value"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static UInt32 U16ToU32_Little_Endian(this IEnumerable<UInt16> value, int startIndex)
{
return (UInt32)((value.ElementAt(startIndex+1) << 16) | value.ElementAt(startIndex));
}
/// <summary>
/// 小端模式 u16 to float
/// </summary>
/// <param name="value"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static float U16ToF32_Little_Endian(this IEnumerable<UInt16> value, int startIndex)
{
var u32 = U16ToU32_Little_Endian(value, startIndex);
byte[] bs = BitConverter.GetBytes(u32);
float num = BitConverter.ToSingle(bs, 0);
return num;
}
/// <summary>
/// 小端模式 u32 to u16
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static UInt16[] U32ToU16_Little_Endian(this UInt32 value)
{
UInt16[] datas = new UInt16[2];
datas[0] = (UInt16)(value);
datas[1] = (UInt16)(value >> 16);
return datas;
}
/// <summary>
/// 小端模式 float to u16
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static UInt16[] F32ToU16_Little_Endian(this float value)
{
var bs = BitConverter.GetBytes(value);
var u32 = BitConverter.ToUInt32(bs, 0);
UInt16[] datas = U32ToU16_Little_Endian(u32);
return datas;
}
#endregion
}
}