_485_defs.h

CAN工业节点设计、CAN控制器为SJA1000.C源码

//
// _485_defs.H
//
// Definitions of 485 communications
//
// Copyright (c) 2007 XK Tech, Tsinghua Univ.
//
//
// Author	: 	Shangyuan Li
// Date		:	2007-8-1
// Version	:	1.0
//
// Date		:	2007-08-17
// Version	:	1.1
// Comment	:	Move function declarations here
//

#ifndef ___485_defs_H__
#define ___485_defs_H__

// define instrument type

#define	INSTR_TUOKE_DH4				0x01

#define _485_STN_NUM_1					1
#define _485_STN_NUM_2					2
#define _485_STN_NUM_3					3
#define _485_STN_NUM_4					4
#define _485_STN_NUM_5					5
#define _485_STN_NUM_6					6
#define _485_STN_NUM_7					7
#define _485_STN_NUM_8					8
#define _485_STN_NUM_9					9
#define _485_STN_NUM_10					10
#define _485_STN_NUM_11					11
#define _485_STN_NUM_12					12
#define _485_STN_NUM_13					13
#define _485_STN_NUM_14					14
#define _485_STN_NUM_15					15
#define _485_STN_NUM_16					16

								 
// define data structure of intelligent instruments
typedef struct {

	ubyte	pre[3];
	ubyte	stn;
	ubyte	fc;		
	ubyte	addr;
	ubyte	dat_L;
	ubyte	dat_H;
	ubyte	CRC_L;
	ubyte	CRC_H;
	ubyte	suf;

} _t_485_tuoke_dh4;

typedef struct {

	ubyte	stn;
	ubyte	fc;		
	ubyte	addr;
	ubyte	dat_L;
	ubyte	dat_H;
	ubyte	CRC_L;
	ubyte	CRC_H;

} _t_485_tuoke_dh4_rx;


#define INSTR_TUOKE_DH4_FRAME_LEN	11

// INSTR_TUOKE_DH4 Frame Structure
// PRE, PRE, PRE, STN, FC, ADDR, DAT_L, DAT_H, CRC_L, CRC_H, SUF

// Compressed Frame Structure for INSTR_TUOKE_DH4
// PRE, PRE, PRE, STN, FC<<4|ADDR, DAT_L, DAT_H, CRC_L, CRC_H, SUF 

// prefixes and suffixes
#define INSTR_TUOKE_DH4_TX_PRE		0xfe
#define INSTR_TUOKE_DH4_TX_SUF		0xaa
#define INSTR_TUOKE_DH4_RX_PRE		0x81
#define INSTR_TUOKE_DH4_RX_SUF		0xbb

#define INSTR_TUOKE_DH4_READ_DATA	0x00
#define INSTR_TUOKE_DH4_SAVE_DATA	0x02
#define INSTR_TUOKE_DH4_ALT_PARAM	0x04
#define INSTR_TUOKE_DH4_READ_PARAM	0x06

#define INSTR_TUOKE_DH4_C_READ_DATA	0x00
#define INSTR_TUOKE_DH4_C_SAVE_DATA	0x20
#define INSTR_TUOKE_DH4_C_ALT_PARAM	0x40
#define INSTR_TUOKE_DH4_C_READ_PARAM	0x60

// Address for data operations, where the fc is 0x00 and 0x02
#define INSTR_TUOKE_DH4_ADDR_DATA	0x00

// Address for parameter operations, while the fc is 0x04 and 0x06
#define INSTR_TUOKE_DH4_ADDR_AH		0x00
#define INSTR_TUOKE_DH4_ADDR_AHL	0x01
#define INSTR_TUOKE_DH4_ADDR_AL		0x02
#define INSTR_TUOKE_DH4_ADDR_ALT	0x03
#define INSTR_TUOKE_DH4_ADDR_IN		0x04
#define INSTR_TUOKE_DH4_ADDR_PB		0x05
#define INSTR_TUOKE_DH4_ADDR_FILE	0x06
#define INSTR_TUOKE_DH4_ADDR_OUT	0x07
#define INSTR_TUOKE_DH4_ADDR_STN	0x08
#define INSTR_TUOKE_DH4_ADDR_CON	0x09
#define INSTR_TUOKE_DH4_ADDR_H		0x0A
#define INSTR_TUOKE_DH4_ADDR_L		0x0B
#define INSTR_TUOKE_DH4_ADDR_O0		0x0C
#define INSTR_TUOKE_DH4_ADDR_OFS	0x0D
#define INSTR_TUOKE_DH4_ADDR_A0		0x0E
#define INSTR_TUOKE_DH4_ADDR_AFS	0x0F



// 485 Communication Stuff
extern ubyte	_485_Init();

extern ubyte	_485_GenerateReadFrame(ubyte stntype, ubyte stn, void * pFrame);
extern void		_485_Tuoke_DH4_CRC(ubyte *);
extern ubyte	_485_Tuoke_DH4_CRCCheck(ubyte *);

extern void 	_485_SendData(ubyte stntype);
extern ubyte 	_485_ReceiveData();

#endif // ___485_defs_H__