📄 modbus.h
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/*
*********************************************************************************************************
* Modbus Protocol Module
*
* (c) Copyright 2006-08-01, XXXXXXXXXXXXXXXXXXXX Corp., ltd,
* All Rights Reserved
*
* V1.00
*
* File : modbus.h
* By : kevin zhu
*********************************************************************************************************
*/
#ifndef __MOD_H__
#define __MOD_H__
#ifdef MOD_GLOBALS
#define MOD_EXT
#else
#define MOD_EXT extern
#endif
/*
*********************************************************************************************************
* standard C51 libs
*********************************************************************************************************
*/
#include <AT89X55.h>
#include <stdio.h>
#include <absacc.h>
#include <string.h>
#include <intrins.h>
/*
*********************************************************************************************************
* constants
*********************************************************************************************************
*/
/*hardware layer*/
#define Timer0H 0xfc //1ms
#define Timer0L 0x66
#define BAUDH 0xff
#define BAUDL 0xdc
/*driver layer*/
#define MAX_REC_LEN 100
#define MAX_SEND_LEN 512
#define TMROUT_9600BPS 20
#define REC_MAX_TMROUT 1000
#define REC_TIMEOUT_MOD 0
/*protocol layer*/
enum FNC_CODE
{
READ_COIL_STATUS = 1,
READ_INPUT_STATUS,
READ_HOLDING_REGISTERS,
READ_INPUT_REGISTERS,
FORCE_SINGLE_COIL,
PRESET_SINGLE_REGISTER,
PRESET_MULTIPLE_REGISTERS = 16
};
enum EXP_CODE
{
ILLEGAL_FUNCTION = 1,
ILLEGAL_DATA_ADDRESS,
ILLEGAL_DATA_VALUE,
SLAVE_DEVICE_FAILURE,
ACKNOWLEDGE,
SLAVE_DEVICE_BUSY,
NEGATIVE_ACKNOWLEDGE,
MEMORY_PARITY_ERROR
};
/*
*********************************************************************************************************
* data types
*********************************************************************************************************
*/
/*driver layer*/
typedef unsigned char BOOLEAN;
typedef unsigned char INT8U; /* Unsigned 8 bit quantity */
typedef signed char INT8S; /* Signed 8 bit quantity */
typedef unsigned int INT16U; /* Unsigned 16 bit quantity */
typedef signed int INT16S; /* Signed 16 bit quantity */
typedef unsigned long INT32U; /* Unsigned 32 bit quantity */
typedef signed long INT32S; /* Signed 32 bit quantity */
typedef float FP32; /* Single precision floating point */
typedef double FP64; /* Double precision floating point */
typedef struct
{
INT8U xdata *pRecBuf; //define recieve buffer and variable;
INT8U RecCnt;
INT8U RecLen;
INT8U RecFstFlg;
INT16U RecTimeOutCnt;
INT8U RecStateMachine;
BOOLEAN RecOk;
INT8U xdata *pTrBuf; //define transmit buffer and variable;
INT8U TrCnt;
INT8U TrLen;
BOOLEAN TrOk;
}COM;
/*protocol control layer*/
typedef struct
{
INT8U Dev; /*设备地址*/
INT8U PtcMode; /*MODBUS协议传输模式(RTU或ASCII)*/
INT16U nSizeOfDOTbl; /*线圈状态数据存放长度*/
INT16U nSizeOfDITbl; /*离散量数据存放长度*/
INT16U nSizeOfAITbl; /*模拟量数据存放长度*/
INT8U xdata *pAITbl; /*存放模拟量数据表*/
INT8U xdata *pDITbl; /*存放离散量数据表*/
INT8U xdata *pDOTbl; /*存放线圈状态数据表*/
/*设置离散输出通道状态回调函数*/
void (code *DOCtrl)(INT8U n,BOOLEAN State);
/*设置单路寄存器回调函数*/
void (code *AOCtrl)(INT8U n,INT16U Data);
/*设置多路寄存器回调函数*/
void (code *MultAOCtrl)(INT16U xdata *p,INT16U len);
}DTBL;
/*
*********************************************************************************************************
* variables
*********************************************************************************************************
*/
/*driver layer*/
MOD_EXT INT8U xdata RecBuf[MAX_REC_LEN]; //receive buf define
MOD_EXT INT8U xdata TrBuf[MAX_SEND_LEN]; //transmit buf define
MOD_EXT COM xdata COM1; //uart1 define
/*protocol layer*/
MOD_EXT DTBL xdata PtcData; //protocol data table .include AI,DI,DO
/*
*********************************************************************************************************
* functions
*********************************************************************************************************
*/
MOD_EXT void ModBusComDrv(void);
MOD_EXT void ModBusTimer0Drv(void);
MOD_EXT void DOCfgFnct(void (code *DOSet)(INT8U n,BOOLEAN State));
MOD_EXT void AOCfgFnct(void (code *AOSet)(INT8U n,INT16U Data));
MOD_EXT void MultAOCfgFnct(void (code *MultAOSet)(INT16U xdata *p,INT16U len));
#ifdef CRC_TBL
/*
*********************************************************************************************************
* code field
*********************************************************************************************************
*/
INT8U code auchCRCHi[256] = {
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
} ;
/* Table of CRC values for low–order byte */
INT8U code auchCRCLo[256] = {
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
} ;
#endif
#endif
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