ds1337.h

实时时钟处理芯片ds1337驱动程序

#ifndef ds1337_HHH
#define ds1337_HHH

/* Device registers */
#define DS1337_REG_SECOND		0
#define DS1337_REG_MINUTE		1
#define DS1337_REG_HOUR			2
#define DS1337_REG_DAY			3
#define DS1337_REG_DATE			4
#define DS1337_REG_MONTH		5
#define DS1337_REG_YEAR			6

#define DS1337_REG_A1M_SECOND	7
#define DS1337_REG_A1M_MINUTE	8
#define DS1337_REG_A1M_HOUR		9
#define DS1337_REG_A1M_DAY_DATE	10

#define DS1337_REG_A2M_MINUTE	11
#define DS1337_REG_A2M_HOUR		12
#define DS1337_REG_A2M_DAY_DATE	13

#define DS1337_REG_CONTROL		14
#define DS1337_REG_STATUS		15

#define MODE_12 0x40
#define MATCHWEEK 0x40 
#define PM      0x20
//control register
#define RS2   0x10
#define RS1   0x08
#define INTCN 0x04
#define A2IE  0x02
#define A1IE  0x01

//status register
#define OSF   0x80
#define A2F   0x02
#define A1F   0x01

struct date_time {
	unsigned char tm_sec;
	unsigned char tm_min;
	unsigned char tm_hour;
	unsigned char tm_wday;//week(1-7)
    unsigned char tm_mday;//month(1-31)
    unsigned char tm_mon;
	unsigned char tm_year;
};

struct alarm1_time{
	unsigned char tm_sec;
	unsigned char tm_min;
	unsigned char tm_hour;
	unsigned char tm_day;

};

struct alarm2_time{
    unsigned char tm_min;
	unsigned char tm_hour;
	unsigned char tm_day;
};

#define DS1337_MAJOR 100
#define DS1337_IOC_MAGIC 'd'
#define DS1337_IOC_MAXNR 14

#define DS1337_SET_TIME _IOW(DS1337_IOC_MAGIC, 0, sizeof(struct date_time))
#define DS1337_GET_TIME _IOR(DS1337_IOC_MAGIC, 1, sizeof(struct date_time))
#define DS1337_SET_ALARM1_MODE _IOW(DS1337_IOC_MAGIC, 2, sizeof(unsigned char))
#define DS1337_GET_ALARM1_MODE _IOR(DS1337_IOC_MAGIC, 3, sizeof(unsigned char))
#define DS1337_SET_ALARM1_TIME _IOW(DS1337_IOC_MAGIC, 4, sizeof(struct alarm1_time))
#define DS1337_GET_ALARM1_TIME _IOR(DS1337_IOC_MAGIC, 5, sizeof(struct alarm1_time))
#define DS1337_SET_ALARM2_MODE _IOW(DS1337_IOC_MAGIC, 6, sizeof(unsigned char))
#define DS1337_GET_ALARM2_MODE _IOR(DS1337_IOC_MAGIC, 7, sizeof(unsigned char))
#define DS1337_SET_ALARM2_TIME _IOW(DS1337_IOC_MAGIC, 8, sizeof(struct alarm2_time))
#define DS1337_GET_ALARM2_TIME _IOR(DS1337_IOC_MAGIC, 9, sizeof(struct alarm2_time))
/*
#define DS1337_SET_HOUR_MODE _IOW(DS1337_IOC_MAGIC, 10, sizeof(unsigned char))
#define DS1337_GET_HOUR_MODE _IOR(DS1337_IOC_MAGIC, 11, sizeof(unsigned char))
#define DS1337_SET_ALARM1_HOUR_MODE _IOW(DS1337_IOC_MAGIC, 12, sizeof(unsigned char))
#define DS1337_GET_ALARM1_HOUR_MODE _IOR(DS1337_IOC_MAGIC, 13, sizeof(unsigned char))
*/
#define DS1337_SET_ALARM1_DAY_MODE _IOW(DS1337_IOC_MAGIC, 10, sizeof(unsigned char))
#define DS1337_GET_ALARM1_DAY_MODE _IOR(DS1337_IOC_MAGIC, 11, sizeof(unsigned char))
//#define DS1337_SET_ALARM2_HOUR_MODE _IOW(DS1337_IOC_MAGIC, 16, sizeof(unsigned char))
//#define DS1337_GET_ALARM2_HOUR_MODE _IOR(DS1337_IOC_MAGIC, 17, sizeof(unsigned char))
#define DS1337_SET_ALARM2_DAY_MODE _IOW(DS1337_IOC_MAGIC, 12, sizeof(unsigned char))
#define DS1337_GET_ALARM2_DAY_MODE _IOR(DS1337_IOC_MAGIC, 13, sizeof(unsigned char))
#endif//ds1337_HHH