www.pudn.com > 2minilib.rar > can.h

#ifndef __CAN_H__ 
#define __CAN_H__ 
 
#include "includes.h" 
#include "../inc/macro.h" 
 
//CAN poll 函数的返回值 
#define CANPOLL_Rev			1	//接收到数据 
#define CANPOLL_SendEnd	2	//发送完毕 
 
typedef enum{ 
	BandRate_125kbps, 
	BandRate_250kbps, 
	BandRate_500kbps, 
	BandRate_1Mbps 
}CanBandRate; 
 
typedef struct { 
	unsigned int id;	//CAN总线ID 
	unsigned char data[8];		//CAN总线数据 
	unsigned int dlc;		//数据长度 
	BOOL IsExt; 	//是否是扩展总线 
	BOOL rxRTR;	//是否是远程帧 
}CanData, *PCanData; 
 
/*********************************************************************\ 
	CAN设备设置接收过滤器结构体 
	参数:	IdMask，Mask 
			IdFilter，Filter 
	是否接收数据按照如下规律: 
	Mask	Filter	RevID	Receive 
	0		x		x		yes 
	1		0		0		yes 
	1		0		1		no 
	1		1		0		no 
	1		1		1		yes 
	 
\*********************************************************************/ 
typedef struct{ 
	unsigned int Mask; 
	unsigned int Filter; 
	BOOL IsExt;	//是否是扩展ID 
}CanFilter,*PCanFilter; 
 
 
 
#define CAN_REVBUFFER_SIZE		100 
 
typedef struct{ 
	CanData buffer[CAN_REVBUFFER_SIZE]; 
	OS_EVENT *Rev_mbox;                   //receive mail box 
	int nCanRevpos;					//接收缓冲区位置 
	int nCanReadpos;					//读取缓冲区位置 
}struct_CAN_Buffer; 
 
 
/*********************************************************************\ 
	CAN设备初始化函数 
	参数:	bandrate，CAN波特率 
			LoopBack，是否是LoopBack模式 
			pfilter，CAN过滤器结构体指针， 
					如果为NULL，则接受所有数据 
\*********************************************************************/ 
typedef int (*can_init_func_t)(CanBandRate bandrate, BOOL LoopBack, PCanFilter pfilter); 
 
typedef void (*can_Open_func_t)(void); 
typedef void (*can_Close_func_t)(void); 
typedef int (*can_Poll_func_t)(void); 
typedef int (*can_read_func_t)(PCanData data); 
typedef int (*can_write_func_t)(PCanData data); 
typedef int (*can_flush_input_func_t)(void); 
typedef int (*can_flush_output_func_t)(void); 
 
 
typedef struct { 
	can_init_func_t init; 
	can_Open_func_t Open; 
	can_Close_func_t Close; 
 
	can_read_func_t read; 
	can_write_func_t write; 
	can_Poll_func_t poll; 
 
	can_flush_input_func_t flush_input; 
	can_flush_output_func_t flush_output; 
 
	int nIsr; 
} can_driver_t; 
 
void Init_Can(int ndev, CanBandRate bandrate, PCanFilter pfilter); 
void Open_Can(int ndev); 
void Close_Can(int ndev); 
 
BOOL CanRead(int ndev, PCanData data, int ntimeout); 
void CanSend(int ndev, PCanData data); 
 
#endif