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我看规约里有个CRC校验表,那个表是如何得到的,我查了相关资料,有的人代码把那种校验码叫正码,谁能指点下,搞不定了?现在行业常用的都是反码,这个反码表我能计算出来!
, R6 A* e; j* O' L9 ~/ n" W8 {+ z6 e3 S! j8 Y
本规约采用CRC校验,控制字和信息字都是(n、k)=(48,40) 码组,生成多项式为* o/ E$ W' l& X, w8 }
G(X)=X8+X2+X+1,陪集码为FFH。按4.2条所述发码规则的顺序以 G(X)模2除前5个字节,生成余
. s. D, Z- \/ ?" V' W6 v, Q! f式R(X)。以R(X)作为校验码。若用查表法,信息字、控制字基本码元的中间余式见& S" j, H" V9 {8 ?: E; A3 m
表1 中间余式表
5 U# f3 b( [, z. D信息字、控制字的码元 查表法中间佘式
6 E' W# a* m) K' E9 N) j# f1 ]" ?2 Z* }3 h01H 1110 0000B
$ E) b: D& n" \1 Q, m6 Z5 ^02H 0111 0000B
# j- n2 H! ]+ N3 U8 \1 y! m04H 0011 1000B / n6 d0 {- y+ d6 b
08H 0001 1100B
& Y" {+ l0 Y6 zl0H 0000 1110B " n0 j4 S! ~" e. {8 v4 g" z, }6 S! m
20H 0000 0111B & n% Y9 k" x9 z- B* X6 W; Z
40H 1110 0011B 2 R4 k: \- D% Z y
80H 1001 0001B ' n3 q9 ?% W, O& S+ U% a& `
uint8 CRC8_Check_Table_XXX[256] = 这是正码表,和规约一致的,(正码表,不知是如何计算出来的,求方法)
1 f) i5 _% \4 C2 {2 f{ 0x00,0xE0,0x70,0x90,0x38,0xD8,0x48,0xA8,/ ]& Q7 F+ S* c4 I) U( _$ k# Y
0x1C,0xFC,0x6C,0x8C,0x24,0xC4,0x54,0xB4,
) f( A, Q) j7 _5 q) X 0x0E,0xEE,0x7E,0x9E,0x36,0xD6,0x46,0xA6,/ r; x* o" }* i; r0 d
0x12,0xF2,0x62,0x82,0x2A,0xCA,0x5A,0xBA,3 L1 `3 B# I5 F- C; x# Y3 U
0x07,0xE7,0x77,0x97,0x3F,0xDF,0x4F,0xAF,
; `- Q, ?" Q* r* n- ] 0x1B,0xFB,0x6B,0x8B,0x23,0xC3,0x53,0xB3,
, d. X, W1 K/ l5 O+ \9 \, a 0x09,0xE9,0x79,0x99,0x31,0xD1,0x41,0xA1, N% N" R* R1 E! Q. D# s
0x15,0xF5,0x65,0x85,0x2D,0xCD,0x5D,0xBD,
. F5 ^4 H4 v! R* _+ @# n# C 0xE3,0x03,0x93,0x73,0xDB,0x3B,0xAB,0x4B,
: L, K% s7 A0 b4 j2 l6 j6 e1 x 0xFF,0x1F,0x8F,0x6F,0xC7,0x27,0xB7,0x57,+ r* U/ R' N$ a' \0 w0 c
0xED,0x0D,0x9D,0x7D,0xD5,0x35,0xA5,0x45,
0 p) M* y. g% @! q. N 0xF1,0x11,0x81,0x61,0xC9,0x29,0xB9,0x59,& o! d% r4 x" c" U8 J* x
0xE4,0x04,0x94,0x74,0xDC,0x3C,0xAC,0x4C,
6 E. H' i M& t* U 0xF8,0x18,0x88,0x68,0xC0,0x20,0xB0,0x50,
/ h+ \& Z, ]; R, \8 Q* Z 0xEA,0x0A,0x9A,0x7A,0xD2,0x32,0xA2,0x42,$ z1 v; r) u+ g. b& v, ]+ }
0xF6,0x16,0x86,0x66,0xCE,0x2E,0xBE,0x5E,
) Z- h5 R. M' a, Q2 i- I( D$ v/ Q# G 0x91,0x71,0xE1,0x01,0xA9,0x49,0xD9,0x39,
1 G6 a: A1 R0 D 0x8D,0x6D,0xFD,0x1D,0xB5,0x55,0xC5,0x25,% J% }2 F8 d* r+ ^ i1 e
0x9F,0x7F,0xEF,0x0F,0xA7,0x47,0xD7,0x37,
a- B6 ^3 B4 ?7 } I; W 0x83,0x63,0xF3,0x13,0xBB,0x5B,0xCB,0x2B,) R2 y; \- H: e5 J8 w s' `5 ]
0x96,0x76,0xE6,0x06,0xAE,0x4E,0xDE,0x3E,
) @0 L) l( H! F' ^% s5 ^& } 0x8A,0x6A,0xFA,0x1A,0xB2,0x52,0xC2,0x22,
3 M: ]. g% R* ]- }6 F& ` 0x98,0x78,0xE8,0x08,0xA0,0x40,0xD0,0x30,
! }4 o5 ?5 n. Q" o* U 0x84,0x64,0xF4,0x14,0xBC,0x5C,0xCC,0x2C,2 I. g& E4 O& L& u- t. C5 s6 v
0x72,0x92,0x02,0xE2,0x4A,0xAA,0x3A,0xDA,
' ?+ K7 V1 }$ M! C$ [ 0x6E,0x8E,0x1E,0xFE,0x56,0xB6,0x26,0xC6,+ m5 h& d% E* X) Z! q+ y, M- g
0x7C,0x9C,0x0C,0xEC,0x44,0xA4,0x34,0xD4,* z3 _) T5 g( Q8 \4 ~: o: i; x
0x60,0x80,0x10,0xF0,0x58,0xB8,0x28,0xC8,
$ v' w+ e8 o5 C$ U6 S, X; h% N! D% } 0x75,0x95,0x05,0xE5,0x4D,0xAD,0x3D,0xDD,& a" p; y1 F- d% T; Y
0x69,0x89,0x19,0xF9,0x51,0xB1,0x21,0xC1,
7 K( i }% s& g. b, u- n 0x7B,0x9B,0x0B,0xEB,0x43,0xA3,0x33,0xD3,+ a$ G, F! Z! l( @* K! x( T2 n; A/ l
0x67,0x87,0x17,0xF7,0x5F,0xBF,0x2F,0xCF},6 z) c& M1 T2 a' a+ @3 z7 V1 M& V
! p% r' ?! [5 t2 g
咱们常用都是反码表
: r5 B3 B* R6 B. P( O6 wuint8 CRC8_Check_Table_XXX[256] = {. A L& L( d- u$ r. {0 f
0x00,0x07,0x0e,0x09,0x1c,0x1b,0x12,0x15,/ V0 ~+ i E) X. e
0x38,0x3f,0x36,0x31,0x24,0x23,0x2a,0x2d,//0
) g# X5 Y+ `+ ?# e9 d; J 0x70,0x77,0x7e,0x79,0x6c,0x6b,0x62,0x65,
0 b, x8 A) ~) t! q 0x48,0x4f,0x46,0x41,0x54,0x53,0x5a,0x5d,//18 [9 u! [1 P; [& g/ i
0xe0,0xe7,0xee,0xe9,0xfc,0xfb,0xf2,0xf5,/ a9 G% |6 E+ J% Y8 |$ y
0xd8,0xdf,0xd6,0xd1,0xc4,0xc3,0xca,0xcd,//22 i. h8 M7 a7 n8 U7 J% q4 I
0x90,0x97,0x9e,0x99,0x8c,0x8b,0x82,0x85,8 W7 p7 c% r: F u
0xa8,0xaf,0xa6,0xa1,0xb4,0xb3,0xba,0xbd,//3
& {, N a) k3 b5 q 0xc7,0xc0,0xc9,0xce,0xdb,0xdc,0xd5,0xd2,' q+ Z; \) E( F5 c$ Q4 |
0xff,0xf8,0xf1,0xf6,0xe3,0xe4,0xed,0xea,//4+ ^7 q( _0 b4 ?# w0 {* w
0xb7,0xb0,0xb9,0xbe,0xab,0xac,0xa5,0xa2,
% w" o- ^5 P% T 0x8f,0x88,0x81,0x86,0x93,0x94,0x9d,0x9a,//57 X9 ]* @6 t" _3 h
0x27,0x20,0x29,0x2e,0x3b,0x3c,0x35,0x32,
8 o* H$ n! @* h; m" Z$ x 0x1f,0x18,0x11,0x16,0x03,0x04,0x0d,0x0a,//6
- u) p6 [2 a3 K B0 V) g, F/ `# m 0x57,0x50,0x59,0x5e,0x4b,0x4c,0x45,0x42,% `" H, c/ Q0 L/ b
0x6f,0x68,0x61,0x66,0x73,0x74,0x7d,0x7a,//7, q; E) K4 O6 l( |2 R& ]# \/ T$ N
0x89,0x8e,0x87,0x80,0x95,0x92,0x9b,0x9c,& F: t6 p2 B" U/ F2 j4 L
0xb1,0xb6,0xbf,0xb8,0xad,0xaa,0xa3,0xa4,//8
; O2 g+ H5 Z& c0 ~% B5 x% f 0xf9,0xfe,0xf7,0xf0,0xe5,0xe2,0xeb,0xec,
0 y" X. n' U% {: q. i: a; ?5 X c% Z 0xc1,0xc6,0xcf,0xc8,0xdd,0xda,0xd3,0xd4,//9
# |: [6 X. W4 g3 Y7 x' k+ r 0x69,0x6e,0x67,0x60,0x75,0x72,0x7b,0x7c,
% o2 Z" O% e3 I9 @$ o3 R 0x51,0x56,0x5f,0x58,0x4d,0x4a,0x43,0x44,//a
( y I6 x8 y' a1 [% e5 p$ @ 0x19,0x1e,0x17,0x10,0x05,0x02,0x0b,0x0c,$ Y& A4 S: Y+ K' L
0x21,0x26,0x2f,0x28,0x3d,0x3a,0x33,0x34,//b
3 \* g+ U1 f' o ]# M* P- ~$ ? M 0x4e,0x49,0x40,0x47,0x52,0x55,0x5c,0x5b,
" W4 e; d# \! m* E# o( | {( Z$ n/ ^ 0x76,0x71,0x78,0x7f,0x6a,0x6d,0x64,0x63,//c( [3 ~8 S- _2 [, X! A, X; ]* _
0x3e,0x39,0x30,0x37,0x22,0x25,0x2c,0x2b,
* J- M) g* c5 K2 { 0x06,0x01,0x08,0x0f,0x1a,0x1d,0x14,0x13,//d& Q2 J3 K% V* ~' T
0xae,0xa9,0xa0,0xa7,0xb2,0xb5,0xbc,0xbb,
5 f$ B7 F0 L e8 I 0x96,0x91,0x98,0x9f,0x8a,0x8d,0x84,0x83,//e
6 T' I) F5 o2 p, S7 [7 g. d. b 0xde,0xd9,0xd0,0xd7,0xc2,0xc5,0xcc,0xcb,
& K* R/ `. A* |$ H& T/ N 0xe6,0xe1,0xe8,0xef,0xfa,0xfd,0xf4,0xf3,//f. A" k# s4 h# Z2 Q5 h* v- m# Z* A
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