www.pudn.com > canbus.rar > mcpcan.h
#ifndef MCPCAN_H
#define MCPCAN_H
#define MCP_MAJOR 98
#define MCP_NUM 2
/* Set the message of the device driver */
#define IOCTL_SET_MSG _IOR(MCP_MAJOR, 0, int*)
/* _IOR means that we're creating an ioctl command
* number for passing information from a user process
* to the kernel module.
*
* The first arguments, MAJOR_NUM, is the major device
* number we're using.
*
* The second argument is the number of the command
* (there could be several with different meanings).
*
* The third argument is the type we want to get from
* the process to the kernel.
*/
/* Get the message of the device driver */
#define IOCTL_GET_MSG _IOR(MCP_MAJOR, 1, int*)
/* This IOCTL is used for output, to get the message
* of the device driver. However, we still need the
* buffer to place the message in to be input,
* as it is allocated by the process.
*/
typedef struct mcpcan_data{
unsigned int BufNo;
unsigned int IdType;
unsigned int id;
unsigned int DataLen;
char data[9];
}mcpcan_data;
#ifdef MCP2510_FLAG
#define MCP2510_EXT
#else
#define MCP2510_EXT extern
#endif
typedef volatile unsigned char mcp2510_reg;
typedef struct struct_mcp2510_map{
// x000 xxxx
mcp2510_reg RXF0SIDH;
mcp2510_reg RXF0SIDL;
mcp2510_reg RXF0EID8;
mcp2510_reg RXF0EID0;
mcp2510_reg RXF1SIDH;
mcp2510_reg RXF1SIDL;
mcp2510_reg RXF1EID8;
mcp2510_reg RXF1EID0;
mcp2510_reg RXF2SIDH;
mcp2510_reg RXF2SIDL;
mcp2510_reg RXF2EID8;
mcp2510_reg RXF2EID0;
mcp2510_reg BFPCTRL;
mcp2510_reg TXRTSCTRL;
mcp2510_reg CANSTAT;
mcp2510_reg CANCTRL;
// x001 xxxx
mcp2510_reg RXF3SIDH;
mcp2510_reg RXF3SIDL;
mcp2510_reg RXF3EID8;
mcp2510_reg RXF3EID0;
mcp2510_reg RXF4SIDH;
mcp2510_reg RXF4SIDL;
mcp2510_reg RXF4EID8;
mcp2510_reg RXF4EID0;
mcp2510_reg RXF5SIDH;
mcp2510_reg RXF5SIDL;
mcp2510_reg RXF5EID8;
mcp2510_reg RXF5EID0;
mcp2510_reg TEC;
mcp2510_reg REC;
mcp2510_reg CANSTAT_x001; // refer to the same register CANSTAT
mcp2510_reg CANCTRL_x001; // refer to the same register CANCTRL
// x010 xxxx
mcp2510_reg RXM0SIDH;
mcp2510_reg RXM0SIDL;
mcp2510_reg RXM0EID8;
mcp2510_reg RXM0EID0;
mcp2510_reg RXM1SIDH;
mcp2510_reg RXM1SIDL;
mcp2510_reg RXM1EID8;
mcp2510_reg RXM1EID0;
mcp2510_reg CNF3;
mcp2510_reg CNF2;
mcp2510_reg CNF1;
mcp2510_reg CANINTE;
mcp2510_reg CANINTF;
mcp2510_reg EFLG;
mcp2510_reg CANSTAT_x010;
mcp2510_reg CANCTRL_x010;
// x011 xxxx
mcp2510_reg TXB0CTRL;
mcp2510_reg TXB0SIDH;
mcp2510_reg TXB0SIDL;
mcp2510_reg TXB0EID8;
mcp2510_reg TXB0EID0;
mcp2510_reg TXB0DLC;
mcp2510_reg TXB0D0;
mcp2510_reg TXB0D1;
mcp2510_reg TXB0D2;
mcp2510_reg TXB0D3;
mcp2510_reg TXB0D4;
mcp2510_reg TXB0D5;
mcp2510_reg TXB0D6;
mcp2510_reg TXB0D7;
mcp2510_reg CANSTAT_x011;
mcp2510_reg CANCTRL_x011;
// x100 xxxx
mcp2510_reg TXB1CTRL;
mcp2510_reg TXB1SIDH;
mcp2510_reg TXB1SIDL;
mcp2510_reg TXB1EID8;
mcp2510_reg TXB1EID0;
mcp2510_reg TXB1DLC;
mcp2510_reg TXB1D0;
mcp2510_reg TXB1D1;
mcp2510_reg TXB1D2;
mcp2510_reg TXB1D3;
mcp2510_reg TXB1D4;
mcp2510_reg TXB1D5;
mcp2510_reg TXB1D6;
mcp2510_reg TXB1D7;
mcp2510_reg CANSTAT_x100;
mcp2510_reg CANCTRL_x100;
// x101 xxxx
mcp2510_reg TXB2CTRL;
mcp2510_reg TXB2SIDH;
mcp2510_reg TXB2SIDL;
mcp2510_reg TXB2EID8;
mcp2510_reg TXB2EID0;
mcp2510_reg TXB2DLC;
mcp2510_reg TXB2D0;
mcp2510_reg TXB2D1;
mcp2510_reg TXB2D2;
mcp2510_reg TXB2D3;
mcp2510_reg TXB2D4;
mcp2510_reg TXB2D5;
mcp2510_reg TXB2D6;
mcp2510_reg TXB2D7;
mcp2510_reg CANSTAT_x101;
mcp2510_reg CANCTRL_x101;
// x110 xxxx
mcp2510_reg RXB0CTRL;
mcp2510_reg RXB0SIDH;
mcp2510_reg RXB0SIDL;
mcp2510_reg RXB0EID8;
mcp2510_reg RXB0EID0;
mcp2510_reg RXB0DLC;
mcp2510_reg RXB0D0;
mcp2510_reg RXB0D1;
mcp2510_reg RXB0D2;
mcp2510_reg RXB0D3;
mcp2510_reg RXB0D4;
mcp2510_reg RXB0D5;
mcp2510_reg RXB0D6;
mcp2510_reg RXB0D7;
mcp2510_reg CANSTAT_x110;
mcp2510_reg CANCTRL_x110;
// x111 xxxx
mcp2510_reg RXB1CTRL;
mcp2510_reg RXB1SIDH;
mcp2510_reg RXB1SIDL;
mcp2510_reg RXB1EID8;
mcp2510_reg RXB1EID0;
mcp2510_reg RXB1DLC;
mcp2510_reg RXB1D0;
mcp2510_reg RXB1D1;
mcp2510_reg RXB1D2;
mcp2510_reg RXB1D3;
mcp2510_reg RXB1D4;
mcp2510_reg RXB1D5;
mcp2510_reg RXB1D6;
mcp2510_reg RXB1D7;
mcp2510_reg CANSTAT_x111;
mcp2510_reg CANCTRL_x111;
} T_MCP2510_MAP;
// Define the Base Address( in its own address space ) of MCP20510
#define MCP2510_MAP ((T_MCP2510_MAP*)0x0)
// Define the initial value for the mcp2510's configuration register
// Buffer Pin Full Control : disabled
#define BFPCTRL_INIT_VAL (0x00)
// Transmitter Request to Send pin : Digital Input
#define TXRTSCTRL_INIT_VAL (0x00)
// Configure the bit timing : 125kHZ
#define CNF1_INIT_VAL (0x03)
#define CNF2_INIT_VAL (0xb1)
#define CNF3_INIT_VAL (0x05)
// Configure the interrupt : disable all interrupts
#define CANINTE_INIT_VAL (0x03) //0xe3
#define CANINTF_INIT_VAL (0x00)
// Reset Error Flag Register
#define EFLG_INIT_VAL (0x00)
// Transmitter Buffer Control
#define TXBnCTRL_INIT_VAL (0x00)
// Receiver Buffer 0 Control Register : Turn mask/filter off, receiver all message, Rollover disable
#define RXB0CTRL_INIT_VAL (0x60)
// Receiver Buffer 1 Control Register : Turn mask/filter off, receiver all message
#define RXB1CTRL_INIT_VAL (0x60)
/* Function prototypes */
#define TOLONG( addr ) ((unsigned long)(addr))
MCP2510_EXT void MCP2510_Init( int MinorNum );
//--------------------------------//
#define TXBUF0 0
#define TXBUF1 1
#define TXBUF2 2
#define RXBUF0 3
#define RXBUF1 4
#define STANDID 0
#define EXTID 1
MCP2510_EXT void MCP2510_TX(int TxBuf, int IdType, unsigned int id, int DataLen, char * data);
MCP2510_EXT void MCP2510_RX(int RxBuf, int * IdType, unsigned int * id, int * DataLen, char *data);
#endif