rtcalarm.c

S3C2410学习的基础资料 大部分实验源码及工程

#include "2410lib.h"
#include "2410addr.h"
#include "def.h"

char *week[8] = { "","SUN","MON", "TUES", "WED", "THURS","FRI", "SAT" } ;
int year,month,date,weekday,hour,min,sec;
int enable_beep = 1;
extern void Buzzer_PWM_Run(void);

void __irq IsrAlarm(void);
void __irq Tick_Isr(void);

//设置RTC ALARM 时间
void setRTCalm(U8 almyear,U8 almmon,U8 almdate,
               U8 almhour,U8 almmin,U8 almsec)//年、月、日、时、分、秒
{   rRTCCON=0x0001;
	
	rALMYEAR = almyear;
	rALMMON  = almmon;
	rALMDATE = almdate;
	rALMHOUR = almhour;
	rALMMIN  = almmin;
	rALMSEC  = almsec;
	
	rRTCCON = 0;	//disable RTC write
}

//置时钟定时时间
void setRTCtime(U8 wRTCyear,U8 wRTCmon,U8 wRTCdate,
				U8 wRTCday,U8 wRTChour,U8 wRTCmin,U8 wRTCsec)//年、月、日、星期、时、分、秒
{
	rRTCCON=0x01;
	
	rBCDYEAR = wRTCyear;
	rBCDMON  = wRTCmon;
	rBCDDATE = wRTCdate;
	rBCDDAY  = wRTCday;
	rBCDHOUR = wRTChour;
	rBCDMIN  = wRTCmon;
	rBCDSEC  = wRTCsec;
	
    rRTCCON = 0x00;	//disable RTC write
}
//open rtc
void OpenRtc(void)
{
    pISR_TICK=(unsigned)Tick_Isr;
    rTICNT=0xFF;//Tick time interrupt enable;Tick time count value=127
    EnableIrq(BIT_TICK);//open RTC TICK INTERRUPT
}

//close  rtc
void CloseRtc(void)
{
    rTICNT &= ~(1<<7);
    DisableIrq(BIT_TICK);

}
//open rtc alarm
void OpenAlarm()
{
	pISR_RTC = (unsigned)IsrAlarm;
	ClearPending(BIT_RTC);	
	rRTCALM = (0x7f);	//enable alarm
	EnableIrq(BIT_RTC);	
		
}

//close  rtc alarm
void CloseAlarm(void)
{
	rRTCALM = 0;			//disable alarm
	DisableIrq(BIT_RTC);
}

// get rtc
void Get_Rtc(void)
{
        rRTCCON = 0x01;	//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768

	    if (rBCDYEAR == 0x99)    
	    year = 0x1999;
	    else    
	    year = 0x2000 + rBCDYEAR;
	    month=rBCDMON;
	    date=rBCDDATE;
	    weekday=rBCDDAY;
	    hour=rBCDHOUR;
	    min=rBCDMIN;
	    sec=rBCDSEC;
   
        rRTCCON = 0x0;    //RTC读写禁止，选择BCD时钟、计数器，无复位，1/32768
}

/****************************************************/
void xmain(void)
{
    ChangeClockDivider(1,1);
    ChangeMPllValue(0xa1,0x3,0x1);   
    Port_Init();
    Uart_Select(0);
    Uart_Init(0,115200);
	Uart_Printf("the main is running\n");
	
	setRTCalm(06,04,15,1,5,1);//年、月、日、时、分、秒
	setRTCtime(06,04,15,2,1,4,29);//年、月、日、星期、时、分、秒
   
	OpenAlarm();
	OpenRtc();
	
	
	while(1);
	//    Buzzer_PWM_Run();
}

void __irq IsrAlarm(void)
{
    ClearPending(BIT_RTC);
    Uart_Printf("s3c244A RTCALM  oucer \n");
    Buzzer_PWM_Run();
}


void __irq Tick_Isr(void)
{
	Get_Rtc();
	Uart_Printf("RTC TIME : %4x-%02x-%02x - %s - %02x:%02x:%02x\n",year,month,date,week[weekday],hour,min,sec);
	ClearPending(BIT_TICK);
	
}