rtc.c

ads1.2 44b0 RTC读写 RtcAlarm

#include "44b.h"
#include "rtclib.h"


#define	RTC_RW_EN()	rRTCCON = 1					//|= 1
#define	RTC_RW_DS()	rRTCCON &= 0xfe

#define ALMEN        (1<<6)
#define ALARM_DAY    (1<<3)
#define ALARM_HOUR   (1<<2)
#define ALARM_MIN    (1<<1)
#define ALARM_SEC    (1<<0)
///extern int MCLK;

void RtcSetDay(TIME_STRUC *time)
{
	RTC_RW_EN();				//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768		
	rBCDYEAR = time->year;;		//年
    rBCDMON  = time->month;		//月
    rBCDDAY  = time->day;		//日	
	RTC_RW_DS();
}

void RtcSetWeek(TIME_STRUC *time)
{
	RTC_RW_EN();
	rBCDDATE = time->weekday;
	RTC_RW_DS();
}

void RtcSetTime(TIME_STRUC *time)
{
	RTC_RW_EN();				//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768		
	rBCDHOUR = time->hour;		//小时
    rBCDMIN  = time->min;		//分
    rBCDSEC  = time->sec;		//秒
	RTC_RW_DS();
}


void RtcInit(TIME_STRUC *time,void (*rtc_isr)())
{
    RTC_RW_EN();				//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768
    rBCDYEAR = time->year;;		//年
    rBCDMON  = time->month;		//月
    rBCDDAY  = time->day;		//日
    rBCDDATE = time->weekday;	//星期
    rBCDHOUR = time->hour;		//小时
    rBCDMIN  = time->min;		//分
    rBCDSEC  = time->sec;		//秒
    
    rTICINT = 0x80+127;		//enable tick timer interrupt, set tick timer interrupt time = (127+1)/128 second	
    
    pISR_TICK=(unsigned int)rtc_isr;
    rINTMSK&=~(BIT_GLOBAL|BIT_TICK); //start tick INT
    rI_ISPC=BIT_TICK;
    
    RTC_RW_DS();	
}

void RtcAlarm(int hour,int min,int sec,void (*alarm_isr)())  
{
	RTC_RW_EN();
	rALMYEAR = rBCDYEAR;		//年
	rALMMON  = rBCDMON;		//月
	rALMDAY  = rBCDDAY;		//日
	rALMHOUR = hour;		//小时
	rALMMIN  = min;		//分
	rALMSEC  = sec; 		//秒
	
	
    
	rRTCALM = 0x7f;		//全局警报使能控制，年、月、日、星期、时分秒警报使能控制
	rRTCALM = ALMEN;
	if(hour>0) rRTCALM |= ALARM_HOUR;
	if(min>0) rRTCALM |= ALARM_MIN;
	if(sec>0) rRTCALM |= ALARM_SEC;
	
	//rRTCALM = ALMEN|ALARM_SEC;
	pISR_RTC=(unsigned int)alarm_isr;
    rINTMSK&=~(BIT_GLOBAL|BIT_RTC); //start alarm INT
    rI_ISPC=BIT_RTC;
    
	RTC_RW_DS();
}

void RtcGetTime(TIME_STRUC *time)
{
	unsigned char m;

	RTC_RW_EN();		//RTC读写使能
	time->year = 2000 + rBCDYEAR;
	time->weekday = rBCDDATE;

	m = rBCDMON;	
	time->month = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制

	m = rBCDDAY;	
	time->day = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制	

	m = rBCDHOUR;	
	time->hour = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制
	
	m = rBCDMIN;	
	time->min = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制

	m = rBCDSEC;			
	time->sec = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制
	
    RTC_RW_DS();		//RTC读写禁止(降低功率消耗)，选择BCD时钟、计数器，无复位，1/32768    

}