can.h

PCM9880是一块PC/104界面的双端口隔离CAN总线通讯卡

#include <linux/types.h>
#include <linux/ioctl.h>

#ifndef PACKED
#define PACKED __attribute__((packed))
#endif

#define CAN_MSG_LENGTH 8

struct canmsg_t {
	short		flags;
	int		cob;
	unsigned long	id;
	unsigned long	timestamp;
	unsigned int	length;
	char		data[CAN_MSG_LENGTH];
} PACKED;

/* Definitions to use for canmsg_t flags */
#define MSG_RTR (1<<0)
#define MSG_OVR (1<<1)
#define MSG_EXT (1<<2)

/* CAN ioctl magic number */
#define CAN_IOC_MAGIC 'd'

unsigned long bittiming;
unsigned short channel;

/* CAN ioctl functions */
#define CMD_START _IOW(CAN_IOC_MAGIC, 1, channel)
#define CMD_STOP _IOW(CAN_IOC_MAGIC, 2, channel)
//#define CMD_RESET 3

#define CONF_BAUD _IOW(CAN_IOC_MAGIC, 4, bittiming)
//#define CONF_ACCM
//#define CONF_XTDACCM
//#define CONF_TIMING
//#define CONF_OMODE
#define CONF_FILTER _IOW(CAN_IOC_MAGIC, 8, unsigned char)
//#define CONF_FENABLE
//#define CONF_FDISABLE


#define STAT _IO(CAN_IOC_MAGIC, 9)