rtc.h

门禁系统 interated with LCD

#include "i2c.h"

#ifndef RTC_H_
#define RTC_H_

#endif /*RTC_H_*/

#define RTC_R	0xA3
#define RTC_W	0xA2

#define RTC_CONTROL_1	0
#define RTC_CONTROL_2	1
#define SECONDS 		2
#define MINUTES 		3
#define HOURS 			4
#define DAYS			5
#define WEEKDAYS 		6
#define MONTHs			7
#define YEARS			8
#define MINUTES_ALARM	9
#define HOURS_ALARM		0x0A
#define DAYS_ALARM		0x0B
#define WEEKDAYS_ALARM	0x0C
#define CLK_OUT			0x0D
#define TIMER_CONTROL	0x0E
#define TIMER_COUNTDOWN	0x0F
	
int RTC_Write(int,int);		//returns TRUE if OK, -1 if failed
int RTC_Write_All(unsigned char *);
int RTC_Read(int);			//returns TRUE if OK, -1 if failed
int RTC_Enable_Alarm(int);	//returns TRUE if OK, -1 if failed
int RTC_Disable_Alarm(int); //returns TRUE if OK, -1 if failed
int RTC_Reset_Alarm(void);
int RTC_Init(void);