chksja.h

测试EPP_CAN板的Linux操作系统驱动的小程序,

/* chksja.h
 *
 *	a tool for SJA1000 checking.
 *			written by : Chen Zhenyong
 *				[e-mail]
 *				2004/2/12
 */
#ifndef _CHKSJA_H_
#define _CHKSJA_H_

#define MODE_REG	0	//模式
#define CMD_REG		1	//命令(只写)
#define STATUS_REG	2	//状态(只读)
#define INTR_REG	3	//中断(只读)
#define INTR_EN_REG	4	//中断使能
#define BUSTIME0_REG	6	//bus time 0(工作时只读)
#define BUSTIME1_REG	7	//bus time 1(工作时只读)
#define OUTCTL_REG	8	//输出控制(工作时只读)
#define CLKDIV_REG	31	//时钟分频器

//下面的寄存器是过滤用的,在复位期间可以访问,工作期间不可见
#define ACCCODE0_REG	16	//验收代码0
#define ACCCODE1_REG	17	//验收代码1
#define ACCCODE2_REG	18	//验收代码2
#define ACCCODE3_REG	19	//验收代码3
#define ACCMASK0_REG	20	//验收掩码0
#define ACCMASK1_REG	21	//验收掩码1
#define ACCMASK2_REG	22	//验收掩码2
#define ACCMASK3_REG	23	//验收掩码3

struct tEPPmode
{
	unsigned char modereg;
	unsigned char intrenreg;
	unsigned char bustime0;
	unsigned char bustime1;
	unsigned char outpctr;
	unsigned char clkdiv;
	unsigned char acptcode0;
	unsigned char acptcode1;
	unsigned char acptcode2;
	unsigned char acptcode3;
	unsigned char acptmask0;
	unsigned char acptmask1;
	unsigned char acptmask2;
	unsigned char acptmask3;
};
static struct tEPPmode EPPmode = {
	modereg:	0x00,		//工作模式,双滤波,回到工作模式
	intrenreg:	0x01,		//中断允许位：只允许接收中断
	bustime0:	0x13,		//baud;	//总线时钟0
	bustime1:	0x1c,		//0xa3;	//总线时钟1
	outpctr:	0x1a,		//输出控制
	clkdiv:		0xc7,		//分时
	acptcode0:	0x3f,		//acceptance code位
	acptcode1:	0xff,
	acptcode2:	0xff,
	acptcode3:	0xff,
	acptmask0:	0xc0,		//acceptance mask位
	acptmask1:	0xff,
	acptmask2:	0xff,
	acptmask3:	0xff,
};
#endif /* _CHKSJA_H_ */