| 1 |
kusanagi |
1.1 |
/**************************************************************************** |
| 2 |
|
|
* F i l e D a t a |
| 3 |
kusanagi |
4.4 |
* $Id: CRC.c,v 4.0 2005/03/06 04:33:01 kusanagi Exp $ |
| 4 |
|
|
* $Revision: 4.0 $ |
| 5 |
|
|
* $Date: 2005/03/06 04:33:01 $ |
| 6 |
kusanagi |
1.1 |
* $RCSfile: CRC.c,v $ |
| 7 |
|
|
* |
| 8 |
|
|
**************************************************************************** |
| 9 |
|
|
* S W D e v e l o p m e n t E n v i r o n m e n t |
| 10 |
|
|
* |
| 11 |
kusanagi |
2.0 |
* $Author: kusanagi $ |
| 12 |
kusanagi |
1.1 |
* : |
| 13 |
|
|
**************************************************************************** |
| 14 |
|
|
* U p d a t i n g |
| 15 |
|
|
|
| 16 |
|
|
*****************************************************************************/ |
| 17 |
|
|
|
| 18 |
|
|
|
| 19 |
|
|
/*============================= Include File ================================*/ |
| 20 |
|
|
#include <CRC.h> |
| 21 |
|
|
|
| 22 |
|
|
/*============================ Global define ================================*/ |
| 23 |
|
|
|
| 24 |
|
|
|
| 25 |
|
|
/*============================== global types ==============================*/ |
| 26 |
|
|
|
| 27 |
|
|
|
| 28 |
|
|
|
| 29 |
|
|
/*****************************************************************************/ |
| 30 |
|
|
/*=========================== Structure define ==============================*/ |
| 31 |
|
|
|
| 32 |
|
|
|
| 33 |
|
|
/*****************************************************************************/ |
| 34 |
|
|
/*============================ Enumerate define =============================*/ |
| 35 |
|
|
|
| 36 |
|
|
/*****************************************************************************/ |
| 37 |
|
|
|
| 38 |
|
|
/*=== Common I N T E R N A L ==*/ |
| 39 |
|
|
|
| 40 |
|
|
/*****************************************************************************/ |
| 41 |
|
|
|
| 42 |
|
|
/*************************************************************************/ |
| 43 |
|
|
/* @Constant: Ccrc_lookup */ |
| 44 |
|
|
/* @Purpose : */ |
| 45 |
|
|
/* CRC-TABLE CRCINIT=0x0000 POLY=0x1021 CCITT V.41 */ |
| 46 |
|
|
/* */ |
| 47 |
|
|
/* @@ */ |
| 48 |
|
|
/*************************************************************************/ |
| 49 |
|
|
|
| 50 |
|
|
static const unsigned int Crc_lookup[256] = { |
| 51 |
|
|
0x0000,0x1021,0x2042,0x3063,0x4084,0x50A5,0x60C6,0x70E7, |
| 52 |
|
|
0x8108,0x9129,0xA14A,0xB16B,0xC18C,0xD1AD,0xE1CE,0xF1EF, |
| 53 |
|
|
0x1231,0x0210,0x3273,0x2252,0x52B5,0x4294,0x72F7,0x62D6, |
| 54 |
|
|
0x9339,0x8318,0xB37B,0xA35A,0xD3BD,0xC39C,0xF3FF,0xE3DE, |
| 55 |
|
|
0x2462,0x3443,0x0420,0x1401,0x64E6,0x74C7,0x44A4,0x5485, |
| 56 |
|
|
0xA56A,0xB54B,0x8528,0x9509,0xE5EE,0xF5CF,0xC5AC,0xD58D, |
| 57 |
|
|
0x3653,0x2672,0x1611,0x0630,0x76D7,0x66F6,0x5695,0x46B4, |
| 58 |
|
|
0xB75B,0xA77A,0x9719,0x8738,0xF7DF,0xE7FE,0xD79D,0xC7BC, |
| 59 |
|
|
0x48C4,0x58E5,0x6886,0x78A7,0x0840,0x1861,0x2802,0x3823, |
| 60 |
|
|
0xC9CC,0xD9ED,0xE98E,0xF9AF,0x8948,0x9969,0xA90A,0xB92B, |
| 61 |
|
|
0x5AF5,0x4AD4,0x7AB7,0x6A96,0x1A71,0x0A50,0x3A33,0x2A12, |
| 62 |
|
|
0xDBFD,0xCBDC,0xFBBF,0xEB9E,0x9B79,0x8B58,0xBB3B,0xAB1A, |
| 63 |
|
|
0x6CA6,0x7C87,0x4CE4,0x5CC5,0x2C22,0x3C03,0x0C60,0x1C41, |
| 64 |
|
|
0xEDAE,0xFD8F,0xCDEC,0xDDCD,0xAD2A,0xBD0B,0x8D68,0x9D49, |
| 65 |
|
|
0x7E97,0x6EB6,0x5ED5,0x4EF4,0x3E13,0x2E32,0x1E51,0x0E70, |
| 66 |
|
|
0xFF9F,0xEFBE,0xDFDD,0xCFFC,0xBF1B,0xAF3A,0x9F59,0x8F78, |
| 67 |
|
|
0x9188,0x81A9,0xB1CA,0xA1EB,0xD10C,0xC12D,0xF14E,0xE16F, |
| 68 |
|
|
0x1080,0x00A1,0x30C2,0x20E3,0x5004,0x4025,0x7046,0x6067, |
| 69 |
|
|
0x83B9,0x9398,0xA3FB,0xB3DA,0xC33D,0xD31C,0xE37F,0xF35E, |
| 70 |
|
|
0x02B1,0x1290,0x22F3,0x32D2,0x4235,0x5214,0x6277,0x7256, |
| 71 |
|
|
0xB5EA,0xA5CB,0x95A8,0x8589,0xF56E,0xE54F,0xD52C,0xC50D, |
| 72 |
|
|
0x34E2,0x24C3,0x14A0,0x0481,0x7466,0x6447,0x5424,0x4405, |
| 73 |
|
|
0xA7DB,0xB7FA,0x8799,0x97B8,0xE75F,0xF77E,0xC71D,0xD73C, |
| 74 |
|
|
0x26D3,0x36F2,0x0691,0x16B0,0x6657,0x7676,0x4615,0x5634, |
| 75 |
|
|
0xD94C,0xC96D,0xF90E,0xE92F,0x99C8,0x89E9,0xB98A,0xA9AB, |
| 76 |
|
|
0x5844,0x4865,0x7806,0x6827,0x18C0,0x08E1,0x3882,0x28A3, |
| 77 |
|
|
0xCB7D,0xDB5C,0xEB3F,0xFB1E,0x8BF9,0x9BD8,0xABBB,0xBB9A, |
| 78 |
|
|
0x4A75,0x5A54,0x6A37,0x7A16,0x0AF1,0x1AD0,0x2AB3,0x3A92, |
| 79 |
|
|
0xFD2E,0xED0F,0xDD6C,0xCD4D,0xBDAA,0xAD8B,0x9DE8,0x8DC9, |
| 80 |
|
|
0x7C26,0x6C07,0x5C64,0x4C45,0x3CA2,0x2C83,0x1CE0,0x0CC1, |
| 81 |
|
|
0xEF1F,0xFF3E,0xCF5D,0xDF7C,0xAF9B,0xBFBA,0x8FD9,0x9FF8, |
| 82 |
|
|
0x6E17,0x7E36,0x4E55,0x5E74,0x2E93,0x3EB2,0x0ED1,0x1EF0 |
| 83 |
|
|
}; |
| 84 |
|
|
|
| 85 |
|
|
|
| 86 |
|
|
|
| 87 |
|
|
|
| 88 |
|
|
|
| 89 |
|
|
|
| 90 |
|
|
|
| 91 |
|
|
|
| 92 |
|
|
/*****************************************************************************/ |
| 93 |
|
|
/* |
| 94 |
|
|
* TRK_crc8_8 |
| 95 |
|
|
* |
| 96 |
|
|
* calculate single 8 bit crc |
| 97 |
|
|
* |
| 98 |
|
|
* Input parameters: |
| 99 |
|
|
* old = old value |
| 100 |
|
|
* data = new value |
| 101 |
|
|
* outcrc = pointer to calculated crc |
| 102 |
|
|
* |
| 103 |
|
|
* Output parameters: status_code |
| 104 |
|
|
* |
| 105 |
|
|
*/ |
| 106 |
|
|
/*****************************************************************************/ |
| 107 |
|
|
|
| 108 |
|
|
typedef union { |
| 109 |
|
|
BYTE word; |
| 110 |
|
|
|
| 111 |
|
|
//#ifdef ERC32 |
| 112 |
|
|
/* ERC 32 arch is BIG endian */ |
| 113 |
|
|
/* struct bit_field_w |
| 114 |
|
|
{ |
| 115 |
|
|
unsigned b7:1; |
| 116 |
|
|
unsigned b6:1; |
| 117 |
|
|
unsigned b5:1; |
| 118 |
|
|
unsigned b4:1; |
| 119 |
|
|
unsigned b3:1; |
| 120 |
|
|
unsigned b2:1; |
| 121 |
|
|
unsigned b1:1; |
| 122 |
|
|
unsigned b0:1; |
| 123 |
|
|
} bit; |
| 124 |
|
|
#else*/ |
| 125 |
|
|
/* IA32 arch is LITTLE endian */ |
| 126 |
|
|
struct bit_field_w |
| 127 |
|
|
{ |
| 128 |
|
|
unsigned b0:1; |
| 129 |
|
|
unsigned b1:1; |
| 130 |
|
|
unsigned b2:1; |
| 131 |
|
|
unsigned b3:1; |
| 132 |
|
|
unsigned b4:1; |
| 133 |
|
|
unsigned b5:1; |
| 134 |
|
|
unsigned b6:1; |
| 135 |
|
|
unsigned b7:1; |
| 136 |
|
|
} bit; |
| 137 |
|
|
//#endif |
| 138 |
|
|
} CM_crc8_8_word ; |
| 139 |
|
|
|
| 140 |
|
|
|
| 141 |
|
|
#define CM_CRC8_8(old,data,crc,c,d,r) do { \ |
| 142 |
|
|
c.word = (old); \ |
| 143 |
|
|
d.word = (data); \ |
| 144 |
|
|
r.bit.b0 = c.bit.b0 ^ c.bit.b6 ^ c.bit.b7 ^ d.bit.b0 ^ d.bit.b6 ^ d.bit.b7; \ |
| 145 |
|
|
r.bit.b1 = c.bit.b0 ^ c.bit.b1 ^ c.bit.b6 ^ d.bit.b0 ^ d.bit.b1 ^ d.bit.b6; \ |
| 146 |
|
|
r.bit.b2 = c.bit.b0 ^ c.bit.b1 ^ c.bit.b2 ^ c.bit.b6 ^ d.bit.b0 ^ d.bit.b1 ^d.bit.b2 ^ d.bit.b6; \ |
| 147 |
|
|
r.bit.b3 = c.bit.b1 ^ c.bit.b2 ^ c.bit.b3 ^ c.bit.b7 ^ d.bit.b1 ^ d.bit.b2 ^d.bit.b3 ^ d.bit.b7; \ |
| 148 |
|
|
r.bit.b4 = c.bit.b2 ^ c.bit.b3 ^ c.bit.b4 ^ d.bit.b2 ^ d.bit.b3 ^ d.bit.b4; \ |
| 149 |
|
|
r.bit.b5 = c.bit.b3 ^ c.bit.b4 ^ c.bit.b5 ^ d.bit.b3 ^ d.bit.b4 ^ d.bit.b5; \ |
| 150 |
|
|
r.bit.b6 = c.bit.b4 ^ c.bit.b5 ^ c.bit.b6 ^ d.bit.b4 ^ d.bit.b5 ^ d.bit.b6; \ |
| 151 |
|
|
r.bit.b7 = c.bit.b5 ^ c.bit.b6 ^ c.bit.b7 ^ d.bit.b5 ^ d.bit.b6 ^ d.bit.b7; \ |
| 152 |
|
|
crc = r.word; \ |
| 153 |
|
|
} while(0) |
| 154 |
|
|
|
| 155 |
|
|
|
| 156 |
|
|
BYTE CM_crc8_8(BYTE old,BYTE data) { |
| 157 |
|
|
CM_crc8_8_word c,d,r; |
| 158 |
|
|
BYTE Crc; |
| 159 |
|
|
|
| 160 |
|
|
CM_CRC8_8(old,data,Crc,c,d,r); |
| 161 |
|
|
|
| 162 |
|
|
return Crc; |
| 163 |
|
|
} |
| 164 |
|
|
|
| 165 |
|
|
/** |
| 166 |
|
|
Compute a 8 CRC based over a \a buffer data of length \a length, whith a starting crc of \a oldcrc |
| 167 |
|
|
and returns the 32 bit crc on the whole buffer |
| 168 |
|
|
*/ |
| 169 |
|
|
UINT32 CM_Compute_CRC8_8(UINT32 oldcrc /** the starting CRC value. changing this value also change the returning value. usually 0. */ |
| 170 |
|
|
,BYTE *buffer /** the starting pointer to start crc computing */ |
| 171 |
|
|
,UINT32 length /** the length in byte of the buffer */ |
| 172 |
|
|
) |
| 173 |
|
|
{ |
| 174 |
|
|
int i; |
| 175 |
|
|
BYTE tmpcrc,crc = oldcrc; |
| 176 |
|
|
CM_crc8_8_word c,d,r; |
| 177 |
|
|
|
| 178 |
|
|
for (i=0; i < length; i++) { |
| 179 |
|
|
tmpcrc=crc; |
| 180 |
|
|
CM_CRC8_8(tmpcrc,*buffer,crc,c,d,r); |
| 181 |
|
|
buffer++; |
| 182 |
|
|
} |
| 183 |
|
|
return crc; |
| 184 |
|
|
} |
| 185 |
|
|
|
| 186 |
|
|
|
| 187 |
|
|
/*****************************************************************************/ |
| 188 |
|
|
/* @Function: CM_Crc16 */ |
| 189 |
|
|
/* @Purpose : */ |
| 190 |
|
|
/* This function calculates the CRC. */ |
| 191 |
|
|
/* */ |
| 192 |
|
|
/* @@ */ |
| 193 |
|
|
/* @Parameter Name @Mode @Description */ |
| 194 |
|
|
/* @@ */ |
| 195 |
|
|
/*****************************************************************************/ |
| 196 |
|
|
|
| 197 |
|
|
/* adrs_ptr: is BYTE* |
| 198 |
|
|
* crc : is UINT16 |
| 199 |
|
|
*/ |
| 200 |
|
|
#define CM_MACRO_CRC16(Crc16,adrs_ptr) do { \ |
| 201 |
|
|
Crc16 = \ |
| 202 |
|
|
(UINT32)(Crc16 << 8) ^ \ |
| 203 |
|
|
(UINT32)(Crc_lookup[ (UINT32) ( ((Crc16 >> 8) & 0xFF) ^ *adrs_ptr) ]); \ |
| 204 |
|
|
} while(0) |
| 205 |
|
|
|
| 206 |
|
|
UINT16 CM_CRC16(BYTE* adrs, UINT16 Crc) |
| 207 |
|
|
{ |
| 208 |
|
|
UINT32 Crc16Value=Crc; |
| 209 |
|
|
// Calculating the CRC16 by using a LookUp table |
| 210 |
|
|
CM_MACRO_CRC16(Crc16Value,adrs); |
| 211 |
|
|
return ((UINT16)Crc16Value); |
| 212 |
|
|
} |
| 213 |
|
|
|
| 214 |
|
|
UINT16 CM_Compute_CRC16(UINT16 oldcrc,BYTE *buffer,UINT32 length) { |
| 215 |
|
|
unsigned int i; |
| 216 |
|
|
UINT32 Crc16Value=oldcrc; |
| 217 |
|
|
for (i=0; i < length; i++) { |
| 218 |
|
|
CM_MACRO_CRC16(Crc16Value,buffer); |
| 219 |
|
|
buffer++; |
| 220 |
|
|
} |
| 221 |
|
|
return ((UINT16)Crc16Value); |
| 222 |
|
|
} |
| 223 |
|
|
|
| 224 |
|
|
BYTE* charToUnsignedChar(char *buffer, UINT32 length){ |
| 225 |
|
|
BYTE buff[length]; |
| 226 |
|
|
unsigned int i; |
| 227 |
|
|
for (i=0; i < length; i++){ |
| 228 |
|
|
buff[i] = (BYTE)buffer[i]; |
| 229 |
|
|
} |
| 230 |
|
|
return buff; |
| 231 |
|
|
} |
| 232 |
|
|
|
Parent Directory
| 
Revision Log