mcp2515.h

CAN 程序使用MCP2515 由STM32做主芯片控制

/*------------------------------------------------------
FILE NAME   : can.c
DESCRIPTION : CAN FUNTION.
VERSION     : 1.0.0 
AUTHOR      : 
CREATE DATE : 03.12.2009
MODIFY DATE : 04.5.2009
LOGS        :-\ 
--------------------------------------------------------*/

#ifndef MCP2515_H_
#define MCP2515_H_
//-----------------Include files-------------------------//
#include "..\header\stm32f10x_reg.h"
#include "..\header\can.h"
/*---------------------------------------------------------------  */
// Define MCP2515 register addresses

#define MCP_RXF0SIDH	0x00
#define MCP_RXF0SIDL	0x01
#define MCP_RXF0EID8	0x02
#define MCP_RXF0EID0	0x03
#define MCP_RXF1SIDH	0x04
#define MCP_RXF1SIDL	0x05
#define MCP_RXF1EID8	0x06
#define MCP_RXF1EID0	0x07
#define MCP_RXF2SIDH	0x08
#define MCP_RXF2SIDL	0x09
#define MCP_RXF2EID8	0x0A
#define MCP_RXF2EID0	0x0B
#define MCP_CANSTAT		0x0E
#define MCP_CANCTRL		0x0F
#define MCP_RXF3SIDH	0x10
#define MCP_RXF3SIDL	0x11
#define MCP_RXF3EID8	0x12
#define MCP_RXF3EID0	0x13
#define MCP_RXF4SIDH	0x14
#define MCP_RXF4SIDL	0x15
#define MCP_RXF4EID8	0x16
#define MCP_RXF4EID0	0x17
#define MCP_RXF5SIDH	0x18
#define MCP_RXF5SIDL	0x19
#define MCP_RXF5EID8	0x1A
#define MCP_RXF5EID0	0x1B
#define MCP_TEC			0x1C
#define MCP_REC			0x1D
#define MCP_RXM0SIDH	0x20
#define MCP_RXM0SIDL	0x21
#define MCP_RXM0EID8	0x22
#define MCP_RXM0EID0	0x23
#define MCP_RXM1SIDH	0x24
#define MCP_RXM1SIDL	0x25
#define MCP_RXM1EID8	0x26
#define MCP_RXM1EID0	0x27
#define MCP_CNF3		0x28
#define MCP_CNF2		0x29
#define MCP_CNF1		0x2A
#define MCP_CANINTE		0x2B
#define MCP_CANINTF		0x2C
#define MCP_EFLG		0x2D
#define MCP_TXB0CTRL	0x30
#define MCP_TXB1CTRL	0x40
#define MCP_TXB2CTRL	0x50

#define MCP_TXB0SIDH	0x31
#define MCP_TXB2SIDH	0x41
#define MCP_TXB3SIDH	0x51

#define MCP_RXB0CTRL	0x60
#define MCP_RXB0SIDH	0x61
#define MCP_RXB1CTRL	0x70
#define MCP_RXB1SIDH	0x71



// Define SPI Instruction Set

#define MCP_WRITE		0x02

#define MCP_READ		0x03

#define MCP_BITMOD		0x05

#define MCP_LOAD_TX0	0x40
#define MCP_LOAD_TX1	0x42
#define MCP_LOAD_TX2	0x44

#define MCP_RTS_TX0		0x81
#define MCP_RTS_TX1		0x82
#define MCP_RTS_TX2		0x84
#define MCP_RTS_ALL		0x87

#define MCP_READ_RX0	0x90
#define MCP_READ_RX1	0x94

#define MCP_READ_STATUS	0xA0

#define MCP_RX_STATUS	0xB0

#define MCP_RESET		0xC0


/*-------------------------------------------------------------------------------*/

extern  unsigned char mcp2515_reset(void);
extern  unsigned char mcp2515_config_rate(void);
extern  unsigned char mcp2515_clock(void);
extern  unsigned int mcp2515_read_register(const unsigned char address);
extern  unsigned char mcp2515_read_registers(const unsigned char address, 
	        unsigned char values[], const unsigned char n);
extern  unsigned char mcp2515_read_status(void);
extern  unsigned char mcp2515_set_register(const unsigned char address, const unsigned char value);
extern  unsigned char mcp2515_modify_register(const unsigned char address, 
	        const unsigned char mask, const unsigned char data);
extern  unsigned char mcp2515_set_registers(const unsigned char address, 
        	const unsigned char values[], const unsigned char n);
extern  unsigned char mcp2515_read_can_id( const unsigned char mcp_addr, 
    	    unsigned char* ext, unsigned int* can_id );
extern  unsigned char mcp2515_read_can_msg( const unsigned char buffer_sidh_addr,
         	CAN_MESSAGE* msg);
extern  unsigned char mcp2515_write_can_id( const unsigned char mcp_addr, 
        	const unsigned char ext, const unsigned int can_id ) ;
extern  unsigned char mcp2515_write_can_msg( const unsigned char buffer_sidh_addr, 
	        const CAN_MESSAGE* msg);
extern  unsigned char mcp2515_start_transmit(void);
extern  unsigned char mcp2515_init_can_buffers(void);
extern  unsigned char mcp2515_rts(void);
extern  unsigned char mcp2515_get_free_txbuf(unsigned char *txbuf_n);
extern  unsigned char mcp2515_filter_intialize(void);
#endif