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c51单片机MODBUS参考程序/ z/ p1 j8 z0 g1 w+ w) c+ u6 n
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//在触摸屏上作个位开关，单片机系统用LED指示' _# z& M* s, v+ \
; D0 ]& Y2 x5 y1 j8 V7 Q5 E//在弹片机的硬件系统中用拨码开关来模拟数据输入，在EVIEW上显示; E( [) @: p6 @0 Y* k
( Z& N' K" x9 z# s" ^" _//本程序实现位的读写和字的读写，为一对一通讯，EVIEW为主机7 Q+ z- F9 a6 A6 U! s6 j2 O
5 c9 g$ U2 z- H#include<reg52.h>) G9 _: [8 L% b2 {
/ P) R2 h1 ]( ^/ P) g: ~ D#include<absacc.h>( w7 ^" J$ A+ H7 f) b$ r1 J
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#include<intrins.h>
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#include<ctype.h>
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/* These macro define simple data type */
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#define uchar unsigned char Q# w( q# T. J% t
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#define ulint unsigned long4 m: V9 K5 ]0 p2 {! c1 C9 M
# j( E, H1 _+ S: a, q' d#define uint unsigned int% z# k# ?! v! T8 S9 U; w3 c0 Q. t
& A& u: Y. F4 t3 |$ |! {/* These macro for Mudbus function code */
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( x7 I" [1 m" I2 @2 s& H% a#define ReadCoilSta 0x01 // 0X read coil function
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* M- B( L% t6 Q% v#define ForceSingleCoil 0x05 // 0X force single coil function6 X8 M0 o+ f* G
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#define ReadHoldReg 0x03 // 4X read input register0 i0 U5 d/ `/ Y$ k4 y8 p$ M) i
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#define PresetMulReg 0x10 // 4X write multi register
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& i# }2 i2 H4 B0 d2 U/* These macro describe index of communiction message from start to end */
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#define CommIndexSlaveID 0 // macro for slave ID4 c) |" {" T% u0 @
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#define CommIndexFunction 1 // macro for function code0 y" q, c4 m* Q
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#define CommIndexStartAdrHi 2 // macro for data hight adr
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#define CommIndexStartAdrLo 3 // macro for data low adr
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* S9 @ ~( `( t: `( ^( f7 w: g4 U#define CommIndexNoPointHi 4 // macro for hight quantity datas
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#define CommIndexNoPointLo 5 // macro for low quantity datas6 |! [0 x6 A3 ?( @8 |6 e
( X5 F# ^3 s; V# {& d% \) v( R/* These macro describe recieve message lenght of different function code */
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8 l( ?$ @9 C6 Y. K; ^/* But not include data lenght ,the data is master write to slave */
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/* because we don't know the data lenght prior, it depend on ComBuf[ComIndexNoPoint] value */
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#define ReadCoilStaIndexEnd 7 // 0~7,0x01,0X
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. \% L9 A% x% T# C. [8 K#define ForceSingleCoilIndexEnd 7 // 0~7,0x05,0X
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; Z* W g- C6 v* U: n/ I#define ReadHoldRegIndexEnd 7 // 0~7,0x03,4X, F: c( y: I9 W; A7 y, J. O
% u5 f# |8 n' `3 c#define PresetMulRegIndexEnd 8 // 0~8,0x10,4X- a' Z" f$ _. S7 C# @' Z# L( U
6 B5 S6 T. Z2 b v9 H$ D4 o/* these macro describe send or recieve allowed */
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#define SEND 1 // send allowed9 a! f! h3 w# N4 o$ W1 i
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#define RECIEVE 0 // recieve allowed
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#define SlaveID 0x01 // the slave's ID* @5 |+ F$ N+ ^8 q
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#define SendRecieveDelay 50 // Send turn to Recieve or Recieve turn to Send delay time vlaue
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) v/ M& d/ K. x#define MaxDataLen 30 // preset CommBuf array Max lenght8 j! h/ H. d! Q
: M( n" S) l& B( J4 g#define MaxRegLen 20 // preset SlaveOutputBuf Max lenght. [& j8 T- F+ B9 O3 S/ g* H
5 k' F: m" ^5 l/* variable for modbus is following */3 n' v! Z W* V/ ^7 C5 ]
1 s& E2 Q! M1 B, Cbit data RecFinishF;
f. c/ W8 M. X7 I$ }7 U
8 U* @7 }5 ^# @, e5 {uchar data CommIndex;- ~6 e$ o8 V/ R! F/ ]2 l
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uchar data CommIndexEnd;0 n b) P" i' [9 L
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uchar idata CommBuf[MaxDataLen];& O& O2 E5 R0 K# b# ~
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uchar idata SlaveOutputBuf[MaxRegLen]; // Hight 8 bit of word is front,Low 8 bit is back
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/ N% \% O; o) O0 `3 Ruchar idata SlaveInputBuf[MaxRegLen];' x) N0 {8 ^* z# F; T
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/* exp data define *// R, N0 L6 y" D7 I
, o) Y6 F% A, [9 J: E0 z% d8 Q#define SlaveAdr XBYTE [0xD800]
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& w `; ~# c" K L& W; jsbit LED0=P1^0;$ o0 z; A1 b3 h, P/ ]. L
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uchar idata ForceCoilBuf[10];
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& j' ?' r4 C3 Nuchar count=0;8 r8 p) `: e) B" T! r( a' _# Y
4 s# t7 w( b* }uchar forceval=0x00;
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, K9 H u# e( a9 u$ Q# G/ k1 q( a//bit forcesendF=0;! N b! H. z8 B% `# z0 Y% b1 s
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/* Table Of CRC Values for high-order byte */ {6 n. K0 ]7 l4 }8 r' F
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uchar code auchCRCHi[] = {
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3 {( W2 [" A/ E/ U" j0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
7 d) C( _6 m$ S/ U/ N
i$ R' r! u- k# H. X0 y6 e0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
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0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,- d4 A! R6 i2 O* O* n$ {$ k: }
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0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
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0x00, 0xC1, 0x81,- z6 O5 }5 {$ p( y- Y; a! b1 A. S
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0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,2 N5 a9 ^! j8 n4 L; [
9 E2 Z2 [2 H$ r; O
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,: f. @. m( C8 q0 n
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0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0 d+ A/ n8 b* U* j1 P
3 ^ L6 i, o9 c* S$ {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,$ D. n# \3 m/ X. c
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0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,5 c* V# Z, d+ e9 f8 `8 ~8 ~. o
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0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
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' _: [6 ^& c5 p X; ^0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
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0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
2 n: I% E z1 }0 f/ i
/ Z9 W( v9 j( i. Q0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,# K' R3 l8 t3 \
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0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,% J: C- y% R4 g' X
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0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
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6 P+ R, e. f2 ^0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
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0x40
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/* Table of CRC values for low-order byte */
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uchar code auchCRCLo[] = {
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) U# [7 c" G$ F2 b& l2 |0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4,
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0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,; S6 {* f) S" s' v- i) q
; D5 e4 T4 A) a- ]1 U* b0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD,
v$ U ~2 J$ b! D F( Q0 v7 ^/ c0 y5 h6 y' S
0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,* ]. k( y' l) @& [% y
/ V* R4 `/ l) e( W; F0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7,
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0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,9 r$ f0 g% Y5 K1 x# i# {8 L0 q
C$ z4 P# v8 B$ n0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE,
! k9 c/ g0 X, p. c/ n
9 U8 x' y1 V4 d0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
, ]2 @0 M! Q' ^9 s6 T6 |
, _: Y6 [, g# l& ~ i7 L9 g0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2,
+ O- p% |# p/ R3 G- `( ]9 D5 \# S4 V G4 X0 _. u: j z+ R
0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, n/ Y2 I+ y5 ?: r1 G1 g
6 V- ^$ V8 j$ l/ M! W0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB,
# I- J7 m* U$ F. e# }
]% P' A) t. p; q; Z# ]' a0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
2 v' p9 A+ H0 W$ e2 g% U) A3 l* H$ F2 O3 U3 p. U e
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91,
! [! ^0 p* d( ?" P: [0 G: ^- Y% S2 U$ [8 a
0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,) F; p7 M" Y: H9 A: }: I- v
, L/ X' s5 `6 H4 Y" f/ M8 s/ ^
0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88,- H, t) j1 v% ~7 p
; H* {/ l( W. X( l3 U4 N4 F7 O0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,# {. t6 S9 K. N4 b# f. a# ]
8 I: k' J, E) h" X+ H0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80,
1 x9 o- X$ S- _5 v X0 {5 p
2 A! I; r* W* }: v& U/ T) F3 K4 t- @0x40
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} ;* ?: y, d6 L4 z( T) r/ h9 s
1 \5 Y q. {" Ouint crc16(uchar *puchMsg,uchar usDataLen) // puchMsg message to calculate CRC upon
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{ // usDataLen quantity of bytes in message
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j+ u# e* I0 k" j, Auchar uchCRCHi = 0xFF ; // high byte of CRC initialized
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' H% `2 h; G1 ?" J6 _uchar uchCRCLo = 0xFF ; // low byte of CRC initialized9 O3 I* g9 g7 E& n+ I8 Q6 t% Q
$ D+ D' W& `, B; F& vuint uIndex ; // will index into CRC lookup table7 x/ w+ `, u1 U' \
* {$ F3 ^. v/ r% c/ ~
while (usDataLen--) // Pass through message buffer! E3 X. o- N5 w* r1 z7 Y* F& b
6 ]. l( Y, n& Y/ c* g{
& ~. K+ j1 S% R. s
+ m' l: O8 ]3 Z% s R3 EuIndex = uchCRCHi ^ *puchMsg++ ; // calculate the CRC( r1 a0 v2 J6 ]. f2 J
1 D* F6 u" w( muchCRCHi = uchCRCLo ^ auchCRCHi[uIndex] ;5 p6 `8 c* o; h6 Y4 l( J+ ^$ l, ~
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uchCRCLo = auchCRCLo[uIndex] ;
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" _5 X; m# C8 N k}
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return (((uint)(uchCRCLo) << 8) | uchCRCHi) ;6 o0 n9 m9 \- l4 L8 w) \* P0 V+ w" K
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/*------------- init code is following ----------------*/! m9 R2 O B: d
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void initSFR(void)
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TH1=0xfa;1 s5 F: \; L/ k. `8 Y; ?
* g2 Q; h0 F' z* DTL1=0xfa; // botelv set 9600 bps/s0 S# m. B/ v+ M; Q; ~7 z# R
8 C; `# Q$ ^0 c8 g# {TMOD=0x21; // T1 8bit timer for uart band rate, T0 16bit timer
. k5 k! A/ k& u4 u$ |- G8 ?5 N& d: D: h
PCON=PCON | 0x80; // band rate is 2 times
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SCON=0x50; // uart mode is 01,start bit + 8 bit data +stop bit : peer to peer communication% G7 {2 X7 ?+ @" a! q' v
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PS=1; // uart intrrupt is hightest
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P! [, C- t+ E3 m) y$ pTR1=1; // start T1
* w4 g" w; g9 n) O0 g
* c' Z. E' B2 |7 r) ?ES=1; // serially interrupt allow
1 g1 ~( _5 D. S+ W/ q% `' S7 o4 }" C9 j: P* B
EA=1; // chief interrupt allow
0 v ?# U# s% }. h D# Z7 H0 Q$ T! f
9 `# ]0 o; r, j8 y: ^}
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& `( w6 E2 ~3 a# z4 |, z% W6 E9 @void initvar(void)4 s" N& W3 e5 m& i6 |: U6 N' b0 h0 ]* H
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5 e& N2 R5 H+ \2 j0 r8 Kuchar i;
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for (i=0;i<=250;i++)
# X* X6 V( o+ s; F2 `
# x6 e0 Y" S. ^0 J3 C' n% \_nop_();% y( O) n6 F2 D
; @( a: z# F6 [; W, n- b8 U0 E
T0=RECIEVE;' R% f4 Q4 S4 }* `& B' L
* e5 M( g% |9 \6 SRecFinishF=0;
w5 g8 i& i0 Z i/ D" m
1 x% ^: o; S& L0 eCommIndex=0;- C( D; E% f. y" v: L v
* b( M$ r( N& G0 C* aCommIndexEnd=0xff; // First enlarge recieve lenght
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for (i=0;i<MaxRegLen;i++)
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SlaveOutputBuf=SlaveAdr;9 k1 }$ C: ^: O, F9 _( ~" @, _
b4 u) L! u' n
}) C; a3 r* s( U+ N7 B9 ?
+ M8 s! Q9 p; F; `8 S0 Fvoid init(void)
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{! f y. @2 `' Q) c) N& y+ {
+ _6 _/ [2 J: H; kinitSFR();
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/ o0 J; a2 ?) E2 g" J* P! Tinitvar();
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void AnalyzeRecieve(void), [; ?0 B, X3 V+ a( C+ w
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9 F5 S3 [. F. U( j; ]uint crc16tem;! T) E( Y3 z9 c0 G0 O+ m7 C
8 q. X0 p$ v; y: l3 d1 euchar i,j;
! _5 `( |' [' `# c/ R' J3 s% Z% J& A
if (CommBuf[CommIndexSlaveID]==SlaveID) // The slave ID is matched* V# n) S' c% S6 `9 u/ B1 h
. ~5 G* F& ~3 b) ]# g9 Y{$ C" a$ N/ F- X
3 O: X* c0 P( C. \& z$ u" y8 @ N& gcrc16tem=crc16(CommBuf,CommIndex-1); // calculate CRC check, erase two CRC byte
" w U6 M$ Z/ @8 U2 p; `3 H
- |7 I4 P( F/ Yif (crc16tem==(((uint)(CommBuf[CommIndexEnd]) << 8) | CommBuf[CommIndexEnd-1]))3 A3 V& R! w3 i2 E% y( i
1 J3 B6 u. E- Q9 a0 b1 s+ V' X{ // crc16 check is OK8 E3 `5 _ [0 W1 i1 z! I
# {, h: x9 F* C' m( p7 q' Q9 w
switch (CommBuf[CommIndexFunction])
* i$ W4 N4 q& s( q) ]3 k8 w3 k% d, U2 l9 s9 Q/ [
{
0 S t/ Y" T- n& ?6 u9 ~8 v" y( ^; v# f! }6 n( A
case ReadCoilSta:: O8 i4 O$ w$ [/ m% |
' f+ a" Z- G- y: S5 A; M& u
CommBuf[CommIndexSlaveID]=SlaveID; // 0/ Y/ S8 Q8 T4 e
. y3 K* k5 L1 M" k$ {" |' ^3 I! kCommBuf[CommIndexFunction]=ReadCoilSta; // 1
/ t( D2 `) o& A+ s: C
3 O! f/ e1 h! JCommBuf[2]=CommBuf[CommIndexNoPointLo] / 0x08; // 0x16 bit
; [8 c, M/ E6 j# y- `! k W# `5 t. s2 g. A3 F }$ T |4 ?
for (i=0;i<MaxRegLen;i++) // sim inputval for test
) y) s4 {' b- Z Z U* u4 q& u% R' @
# T- k$ c/ e& u( S( HSlaveOutputBuf=forceval; // send data of master force coil val% f* v8 Q1 l V9 m8 @; Y
5 i* v0 O; t. T2 S/ P4 Fi=CommBuf[2]+3;
0 T1 j% h8 K9 z7 G' @: k
4 S [# ~6 D ifor(CommIndex=3;CommIndex<i;CommIndex++) // send data Reg to Master4 B7 @3 y8 G# h( F4 |
0 O5 w- W& n# ]0 f4 Q- |CommBuf[CommIndex]=SlaveOutputBuf[CommIndex-3]; // hight 8 bit is first send
8 n% D( i# m0 U/ h* w y# O3 V% U5 \* G: X+ S9 l
crc16tem=crc16(CommBuf,CommIndex); // then send low 8 bit data5 o! ]0 J$ H/ t
. u! c( q; O N' E6 wCommBuf[CommIndex++]=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front$ I1 j) {( \5 X8 H! Y, t8 D/ C, [
. X( i, m! q5 v. v" s; ^CommBuf[CommIndex]=(uchar)(crc16tem>>8); // then send hight 8 bit
: `0 ^; r5 A5 M6 N8 B+ A0 n) w* L
- r: d/ v7 f2 y* {CommIndexEnd=CommIndex;
3 p& ]$ t" C- e0 z) i, h) f9 Y6 s3 L
CommIndex=0;
3 C4 N2 z z- j R/ E2 E6 m" a( k% q
SBUF=CommBuf[CommIndex++];4 |3 {" d B1 R" Y7 Q+ d
' K) D% U: z9 |: L7 O5 Ebreak;
/ e5 v8 p) h# O; M" ]- b
/ U" ^ u/ e. d" F) @4 s0 m* s" d+ c6 {case ForceSingleCoil:
- D+ {& p) q' k5 h W2 B9 O: ^5 L5 p' Z8 j
// SlaveInputBuf[0]=CommBuf[4]; // get data 0x00 or 0xff! Z6 N) Q% C% d4 Z$ w
8 F% W4 G, `" ?! N
if (CommBuf[4]==0xff)
0 _* D* |, N! f. J* ]. } `, @* N6 Y' h7 M$ w' t+ ~) S; T
LED0=0;
; x! m1 S/ o: l! @3 @! B; Y
9 ^* O& \% a' ^* uelse6 H. K3 B& J" k4 ]
3 u$ m5 J* R9 n( y/ bLED0=1;
6 ?% q& R3 o" Q7 z( u2 V: ~" L" [0 [+ h3 _3 |7 q" C
// LED0=!LED0;3 d- `: z Z5 H, y
: O- K1 s8 F! X* [
ForceCoilBuf[count]=CommBuf[4];8 y; y8 \- u9 ^% E
" V1 r' m& K/ y) d0 z% t
forceval=CommBuf[4];$ W# G8 h) v7 \: L
' k9 @! ?$ V% b1 ~, g8 X
count++;
- x1 T1 [/ Z5 j. }
6 E( ^% x3 y8 @+ uCommBuf[CommIndexSlaveID]=SlaveID; // 0
/ S: E1 [1 w4 [+ [1 ]) y" M" e9 R' q" n- `$ J
CommBuf[CommIndexFunction]=ForceSingleCoil; // 1
' s3 Y) j* ^1 U9 [6 a7 Q& _) f+ C( K, J
CommIndex=2; g5 Q& D+ w& V( B; U. _# O7 l' {
: X0 \& q8 Q- y// CommBuf[CommIndex++]=0x00;' [" D) T: _ P+ u$ g, C. ?. w
1 S) ?: q2 a3 F
// CommBuf[CommIndex++]=0x01;
! F# k0 \0 ^7 w# C5 x' L' |# M' [4 J0 D4 M1 l, X+ O
// CommBuf[CommIndex++]=0x00;
! s- v" O' ^! J; p: z8 W
0 m6 e% W; P- @- p) Y0 i// CommBuf[CommIndex++]=0xff;- I E; i$ b' |6 {
! x7 }& | |6 `) ~& Y+ ^/ E// forcesendF=1;
2 O& G2 v3 ?/ q& Y2 w# O, z+ H8 m! }2 W P3 y( ^8 O' m: {
CommBuf[CommIndex++]=CommBuf[CommIndexStartAdrHi]; // 28 l4 K, x, y" v5 A+ O( ?- {: U
5 L p3 y- F2 |# l4 j$ u1 t
CommBuf[CommIndex++]=CommBuf[CommIndexStartAdrLo]; // 32 {1 q# ]" z: l4 e" I6 z% \
5 P% E7 ~3 K( S9 Z, w6 J6 yCommBuf[CommIndex++]=CommBuf[CommIndexNoPointHi]; // 48 L3 [% ]% Z. f
) X4 D2 c/ y, _
CommBuf[CommIndex++]=CommBuf[CommIndexNoPointLo]; // 5
6 ?# Y! i* Q/ N+ \8 S5 z
4 i7 P) V+ }* A a* ~0 T& c+ lcrc16tem=crc16(CommBuf,CommIndex); // then send low 8 bit data
; A G3 b9 o2 u/ l9 J
+ K, Q1 c) ~% y0 {6 O( N+ T( ICommBuf[CommIndex++]=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front
9 W1 N4 |) D$ [# H* I9 d& Y5 b C4 I4 ^
CommBuf[CommIndex]=(uchar)(crc16tem>>8); // then send hight 8 bit T3 @. m( `. D1 H
" P F/ q3 [( ]! jCommIndexEnd=CommIndex;0 M0 _) T: {0 ~3 B+ Y
2 v& {1 Z5 q9 P6 m9 Q9 zCommIndex=0;- t' l( M0 e6 z. F/ c6 U
. I6 l; j) I( U
SBUF=CommBuf[CommIndex++];
. g) R, H( X0 m6 c& u& q" L
, W! o& `! m6 U6 Fbreak;: [ Q A: E$ m: i7 R- u$ X
7 }& s7 S5 l( N* z
case ReadHoldReg:
+ T# c+ C. k; u+ |" O5 b2 O$ p$ s# v4 }2 w
CommBuf[CommIndexSlaveID]=SlaveID; // 05 B1 c1 q. ?! O, P6 Q3 l
0 {1 l- O9 H8 t% gCommBuf[CommIndexFunction]=ReadHoldReg; // 1; z- k# @/ i d4 z& C6 j7 [3 t
1 [+ r7 b+ u' m; B: A9 HCommBuf[2]=CommBuf[CommIndexNoPointLo]*2; // 2 Byte Count$ X- ]6 o. u+ s% V
" K6 C, k2 T S! ufor (i=0;i<MaxRegLen;i++) // sim inputval for test
6 E/ c. G5 H f @; {( G* N- L0 O1 C; o$ Q6 ]2 G& F+ e) y( B
SlaveOutputBuf=SlaveAdr;7 ^% J. e! N* a6 A ]+ D
% A- r& }3 d3 A6 Gi=CommBuf[2]+3;6 @# z* i) l& w4 E
; [+ o' l( c- q+ [* w5 mfor(CommIndex=3;CommIndex<i;CommIndex++) // send data Reg to Master
9 r2 [- d% K3 C+ U. h5 K7 x p% w, c6 Y
CommBuf[CommIndex]=SlaveOutputBuf[CommIndex-3]; // hight 8 bit is first send
3 Z% P& u9 c J: R, `2 Z& d, r
9 ~# w- P# y, g, @crc16tem=crc16(CommBuf,CommIndex); // then send low 8 bit data
- Z/ K `: }* `! f d" z) L3 `& I: K4 X/ | ~4 P
CommBuf[CommIndex++]=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front# Z, C* S/ F$ z& ^, ~
& Q( g, ]' O' k& w! p
CommBuf[CommIndex]=(uchar)(crc16tem>>8); // then send hight 8 bit
5 s7 O( A/ Z- Q j: `! }
7 G% r" }& B* p, S! G. q- ?7 CCommIndexEnd=CommIndex;- h; s9 k( D+ t! G7 o1 [8 ^% B) ]
+ K7 n% s: ?4 W, e, {7 D5 GCommIndex=0;: v8 `5 F( {- R k3 z
* F- `& R' L- t( A$ b) }7 SSBUF=CommBuf[CommIndex++];
5 W2 B1 Q/ c% F0 L. Q. V% e' c0 _+ w, z
break;
, y! k5 v8 k9 f% n1 f$ H7 V R; A) h, P# X
case PresetMulReg:* Z6 C* B3 v$ X) e" q$ O9 ~1 N
1 f: D8 k; m$ }) ` p1 C! B, D
j=CommBuf[CommIndexNoPointLo]*2;# J! s' ?4 e( j! e2 Z# Z
; n+ f9 m% I1 X. c7 V; E4 z
for (i=0;i<j;i++)
; u9 e8 W1 R2 \ f. P/ @: r
2 Z6 r+ @" F8 u m5 {/ DSlaveOutputBuf[0]=CommBuf[i+7]; // get data that master send start 7th byte
& o: m% j! B2 Y: I) d) o% o
$ L$ O6 O. ? D. i& @' aC
/ w* b! y( K; b- n" R6 v
, R5 }) A+ A8 o6 }ommBuf[CommIndexSlaveID]=SlaveID; // 0
( U8 ]+ k* @. s
0 V$ Z8 i% z9 ECommBuf[CommIndexFunction]=PresetMulReg; // 1
& o6 [! q6 O9 E" [( l- O" c1 v9 J( Q6 C% o
CommIndex=2;
. z( p' s a& N# Z6 N- |& D3 P: Y3 N8 A9 [1 q, u
CommBuf[CommIndex++]=CommBuf[CommIndexStartAdrHi]; // 2% [: B: L8 d" H& t4 Q
- m& Z* k6 z" e5 f7 F
CommBuf[CommIndex++]=CommBuf[CommIndexStartAdrLo]; // 3
/ b$ N0 p7 b9 ~; r4 f; U" t9 W U% X1 P$ ]; q- |) U4 i8 P+ p
CommBuf[CommIndex++]=CommBuf[CommIndexNoPointHi]; // 4& U: i& y* b; E: a
@( {3 a2 p: r. A
CommBuf[CommIndex++]=CommBuf[CommIndexNoPointLo]; // 5
5 r" n# K9 J- i2 T' [7 [' `# I/ Y; y/ {) N4 ~/ u$ w; {# g
crc16tem=crc16(CommBuf,CommIndex); // then send low 8 bit data
5 A5 x% z" y+ t% ?* m) _8 c% M" e! J. r6 q5 J0 ^! ?
CommBuf[CommIndex++]=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front
9 f7 `0 S3 F# O; a
4 l& v# S o/ I m5 ?CommBuf[CommIndex]=(uchar)(crc16tem>>8); // then send hight 8 bit$ E' v0 [2 f' c
t0 N' a: }( a( bCommIndexEnd=CommIndex;
4 d6 x% W3 y) E0 ^; {2 E) U. h! C; i1 b. c2 q
CommIndex=0;
( H. {1 l! o: l, v; }2 B5 H! S$ v: o, \! P& \. j2 L* P' |% u \- `
SBUF=CommBuf[CommIndex++];
- j6 S: J: D, D9 T5 ]3 Y
+ U% \/ b' { Y' \- T jbreak;' h8 v+ o8 s5 a2 U
- r4 W6 K7 H# T
default:
3 m6 O7 Y2 E. X. X( ?+ a6 Z* s* d% `6 Z" t+ w
for (i=0;i<=80;i++) // delay // error recieve again
- |6 ?5 f9 d+ ?2 F* w& L8 ?9 H$ y7 i) P
_nop_();! s% D; O& d3 A( @4 q+ V+ Q
z+ U, g; k4 Y# }# t. GCommIndex=0;8 o' N5 W+ t" U9 p
7 x5 K. Q: M5 `6 ?1 `. ~T0=RECIEVE;9 U' U; P+ r) c
' q# Y4 g5 V7 x" z' Rbreak;/ a% U( m% j7 f+ S W# i% K6 G
% C$ {5 T+ D0 J4 h6 E% c}
V* k$ U6 Y+ `+ F+ w% c
7 {2 Z7 B: c" ^}8 H/ z; m7 b6 y% l1 Q2 {( ~+ E/ v
$ I- p' V- V; M
else
3 u$ I% l1 x! Y) d0 n7 p# {# o% \: H8 G8 \% W2 H
{
( {6 M5 H- }1 l! |. k
) N' h7 d$ ]" x6 d% o! z' Afor (i=0;i<=80;i++) // delay7 {- h$ r- R0 I- e5 p
2 ]% e. u- E6 }7 ?_nop_();
2 I; j2 T) Q# v5 a) u( L7 [4 ^$ _- o3 y8 ?" o e
CommIndex=0;# T: P) u# q0 `" j
6 L3 d9 T. `! X' P& s9 c
T0=RECIEVE;
, j( B+ w) n) L1 z6 @! u
& r# D/ Y1 q. _! g/ B# d& m}
/ Z7 F( z* n0 Y% m& m2 t) A# n9 H/ J* e' V0 `# x+ l
}
8 ]1 K) N3 _; M$ B9 A+ L2 S9 Q7 l: K+ _) J( S
}/ y: k u- @+ ~4 @. \0 }
8 P: e+ Z* Y8 k. [: D o3 C
/*------------- intr code is following ----------------*/1 o! `$ e9 R2 X. i4 a s
. F% b, i- B0 D& t3 N/ N4 ~
void slavecomm(void) interrupt 4 using 2! y2 S9 o( a$ I* }- G: v: }
+ p2 ?! U0 a R5 F3 P3 u7 a e3 Z* ]{; B+ _$ e4 {' f4 ]; \) }; h$ k
. x& @* z& U, n8 N: i6 T7 r& B
uint i;% _" A- }( m7 k6 ~5 t* z. W
5 ?- U7 r6 U# B$ Y2 t# @
ES=0;
% `3 K/ q$ G Y0 k ~0 Z Q% q, D5 P. D5 s. i/ H7 L% s
if(TI)
3 w" [# L6 e1 `1 c3 E* h
8 D; y7 J: ?; \1 e: s$ Z% K{
& F( {3 T$ o. c" v% u9 ]9 \9 w
' @& w! c2 s; t; Y% m& M/ vTI=0;
: J) r; @2 r0 W! p' @+ p. j' y6 |
if (CommIndex<=CommIndexEnd). q" A* n0 J1 L8 I: R S
! X# h( I* Y0 }& ~8 J
{- t( G+ Q5 J* {5 v, P) v
+ [; V# |! C6 bSBUF=CommBuf[CommIndex++];) ^% p- B" B) O7 x( O& u
: J6 N, I% l. U}( D- x; \4 [( @+ G: Y& {. \- N
9 g0 v' `$ C% z% lelse2 g: f2 @0 d7 X! A& @
+ E( U# o# Y* B6 h( h{% S0 a: ^3 d7 D' g5 s
, ?" N2 B k/ j
// if (forcesendF)
6 F! N; d8 \3 b$ a% ~( v% C; T' X! S# D! d9 Q
// _nop_();
7 W& N# \ T( p
; }% l' W0 I( Jfor (i=0;i<=SendRecieveDelay;i++) // delay
) b, J' d# w% S& W& T0 v
! m- q8 t1 b& K! M' T; __nop_();; B' ^5 f5 {; c" t5 o
3 p6 P- o+ U3 [: [7 k! z, g( }
CommIndex=0;3 w! h! N3 K4 r5 F2 V
9 E4 M8 N7 Z5 a3 D" [7 |* `" W
T0=RECIEVE;
2 l2 t# J5 O# m/ _1 h" k# X. F$ F9 r3 M& k
}' v* Q9 s! z* a
0 r2 \ \* w* x( F- P# a& I, B
}& \; y1 P+ z) D3 K
: C, x! F$ n2 O1 q( E& `# j$ v& pif(RI)
. t2 R* T+ m- ]* v
0 e, H, I- c0 ?8 w0 P{* p1 i5 ^/ @/ _, X6 Z+ M9 L6 N7 I
! S+ o4 z R2 sRI=0;
Q0 N& V+ C4 ~/ _' J2 K: D, A% A; k1 y) T8 G! d! _( j# I
if (CommIndex<CommIndexEnd) // CommIndex less than recieve lenght; E) H: Z& b4 x- ]/ [# W( y% k
_! {- e* L0 d! |& Z |4 @
{0 |$ Z3 _& m& o
5 j5 e. q# J2 x' V" v% GCommBuf[CommIndex]=SBUF;. y8 E7 E [0 d) m
+ ?* i5 {2 I( U' A! {/ rif (CommIndex==CommIndexFunction)
; @0 T" Y1 p& }4 A6 p9 a( \/ g3 \- _
{) G! b. m* [1 o: o! l) K4 m
0 t1 B9 o$ |8 o0 c# z
switch (CommBuf[CommIndexFunction])
2 d' ?" r) Q6 W' J* `8 L7 b# Y7 x1 V6 F" G
{
) J# F5 f2 q, y8 r& m8 {4 `+ p
case ReadCoilSta:' t5 h+ z# [) B
' h& v# R3 b8 h) x
CommIndexEnd=ReadCoilStaIndexEnd;
+ o) x& z+ T W, v. O8 D x1 \* L6 w) C% @3 ?( ^" B' z( O
break;
Q+ G/ o$ T+ H$ o: ^
" u8 P4 P1 ]6 Z% q& N- \case ForceSingleCoil:8 B) l3 h" M. E% L# \
& G( J1 L6 | NCommIndexEnd=ForceSingleCoilIndexEnd;, k) X) Q) g4 i( }* v" i0 l
' N7 V" y _; S5 m3 I# Pbreak;
$ m; W" X q- H4 x" _' u: N6 H5 A) d) E0 l" z. p3 V5 C5 J
case ReadHoldReg:
& n0 A7 k) {1 U+ G7 I3 E7 F0 o* j) z8 S: R$ C
CommIndexEnd=ReadHoldRegIndexEnd;
) E! Z$ @9 Z8 a
% a1 E' f7 O3 Y5 B9 O5 r( d2 qbreak;
; ^1 l h* s2 G0 g
1 h4 ~$ j" h# D4 |* a2 ocase PresetMulReg:. d) _1 a6 [$ Y# L8 @* N" c3 \# i
" R3 H6 s! A' O0 {2 P
CommIndexEnd=6+CommBuf[CommIndexNoPointLo]*2+2;& P$ r: O, S. |) t
# U. C! Q( N! l0 t7 E J: _
break;
! E0 n3 g& p3 v7 w
' x h2 e, q/ \1 | C; X5 qdefault:% U+ y" w2 d; I2 W# c
* P0 m! ^! K" j- o
break;$ e/ S2 y; c8 ?; w* j0 ~
+ w8 i- }9 I$ }, G9 }2 Q0 L; D
}
: E6 E; r7 P, r/ } e% D* Z% ^) o) f6 h- N" q- W1 y- S$ V5 t+ m( {5 X- C
}8 X6 U( u$ i W' Y8 w: V3 w
1 ], |; {5 s) l3 q7 T
CommIndex++;
7 L9 n/ \' h6 b
' q( I, M+ U! ~& d* h( J- X0 \9 P}
0 l1 }2 G( @3 t* j8 W' F) Q: J4 C
# r+ P9 g: Y! H& ~. y `0 ~else // recieve finished CommIndex==CommIndexEnd
0 m, `* C, p' _1 g: d& W% i6 }$ i) C: W* M! t
{, }- N. T) u v z0 n' y* q
/ E/ Z& s: a. \. n
CommBuf[CommIndexEnd]=SBUF;% @3 D! A) [( Z `9 y! q
$ E$ s: n; T9 ^, X: ORecFinishF=1;
1 l; |9 h4 K/ q0 P2 F2 T! V+ Z ~1 t& X$ z: ]* g% e
for (i=0;i<=Sen
7 E2 [. t! ~* V% V8 T. X; Q
% Z! J2 x% ~6 q+ rdRecieveDelay;i++) // delay3 A: C& D" O7 v1 Q
( H- B/ {: t2 a# Y6 H_nop_();
* K. f. i. O" i; S8 L9 ?' Z4 `3 L( q
T0=SEND;- V1 k7 p6 N$ x! p4 v
7 D7 y4 q1 C5 e( t: m}
! K8 I/ _1 i5 j0 s. U4 k# N( C, Q. v# `3 w
}
$ S3 n/ p+ `3 V5 e+ F, i# g- {
7 w% a% F2 N7 R4 FES=1;' U# t. e7 z/ }% R- _
' l! e* \. p5 a7 m}
6 l) r& E" o% _2 w: Q; H7 w
% R, o9 |5 z/ b4 M. f! g/*------------------ main code following -----------------*/6 q) x. Z; M5 r9 i
0 y4 C3 O) Q( C7 s
void main(void)
( x( M4 `( E+ \' u# o% Y3 c% A7 ^0 ~5 l- M- ~% {! N
{
0 J/ V8 @4 O ^$ q) s" J0 R2 V# k( k: n" ^2 V/ }6 a
uint data i;
; N% v& c+ O' f. |: ^" [' u% b
8 ^/ m* f" ~* b( S& Linit();$ H( u6 V$ w2 h1 q3 b/ _4 B; t; P: y' x
. J) X* j# M. Z0 Zwhile(1)
( u- w l- u/ n
+ V1 P0 o) ^9 @8 |0 D' s6 i- t{/ `6 {' T" z5 H" V, J
, B& x; M- ^/ T7 i" y
// LED0=!LED0;
$ h t" I# J9 r- P! R! I
" Y* B2 h% v Wfor(i=0;i<=9;i++)
7 e% G2 p+ x1 n+ y" p9 G: a, F0 f" H7 y* F
_nop_();
# F4 v* Z8 b3 i8 b" x4 w: Q, ?1 T/ M& P! w
if (RecFinishF)
/ \0 u: ]6 o! F# _4 e8 }6 B; E! D# |$ d" f0 f
{
. R/ k3 H: |( V& A2 m
- p0 g0 o _9 _* F. }AnalyzeRecieve();& G2 h' ?+ T: Z! P
0 ^! h6 ]3 Z: XRecFinishF=0;
& i; P& `( G: }0 K$ ? r& p3 j1 Q4 C" u; J/ y; e
}0 [& L+ Y% e" h: J# \
! L, I+ J T4 e5 a6 u}) B$ F: b$ z7 b/ n
. ]2 o+ Y [! P% c8 R+ ^}( r, U# W8 x) X4 ~
7 t" J+ I' Y# s( l) q
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发表于 2019-1-21 10:03
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