rtcalarm.c

2410一些基本试验的源码

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

char *date[8] = { "","SUN","MON", "TUES", "WED", "THURS","FRI", "SAT" } ;
void __irq IsrAlarm(void);

//设置RTC ALARM 时间
void setRTCalm(U8 almyear,U8 almmon,U8 almday,
               U8 almdate,U8 almmin,U8 almsec)
{   rRTCCON=0x0001;
	
	rALMYEAR = almyear;
	rALMMON  = almmon;
	rALMDATE = almdate;
	rALMMIN  = almmin;
	rALMSEC  = almsec;
	
	rRTCCON = 0;	//disable RTC write
}

//置时钟定时时间
void setRTCtime(U8 wRTCyear,U8 wRTCmon,U8 wRTCday,
				U8 wRTCdate,U8 wRTCmin,U8 wRTCsec)
{
	rRTCCON=0x01;
	
	rBCDYEAR = wRTCyear;
	rBCDMON  = wRTCmon;
	rBCDDAY  = wRTCday;
	rBCDDATE = wRTCdate;
	rBCDMIN  = wRTCmon;
	rBCDSEC  = wRTCsec;
	
    rRTCCON = 0x00;	//disable RTC write
}

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

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

// display rtc
void Display_Rtc(void)
{
    int year;
    int month,day,weekday,hour,min,sec;
    rRTCCON = 0x01;	//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768

    while(1)
    {
	    if (rBCDYEAR == 0x99)    year = 0x1999;
	    else    year = 0x2000 + rBCDYEAR;
	    month=rBCDMON;
	    day=rBCDDAY;
	    weekday=rBCDDATE;
	    hour=rBCDHOUR;
	    min=rBCDMIN;
	    sec=rBCDSEC;
	    if(sec!=0)    break;
    }	 

    Uart_Printf("RTC TIME : %4x/%02x/%02x  %s - %02x:%02x:%02x\n",year,month,day,date[weekday],hour,min,sec);
    rRTCCON = 0x0;    //RTC读写禁止，选择BCD时钟、计数器，无复位，1/32768
}

/****************************************************/
void Main(void)
{

	SetClockDivider(1, 1);
	SetSysFclk(DFT_FCLK_VAL);
	Port_Init();
		
	Uart_Select(0);
	Uart_Init(0, UART_BAUD);
	
	setRTCtime(06,04,15,2,30,29);
    setRTCalm(06,04,15,2,32,29);
	OpenAlarm();
	Uart_Printf("s3c2410x RTC Test\n");
	
	while(1)
	{
		Display_Rtc();
		Delay(100);
	}
}

void __irq IsrAlarm(void)
{
	//when GPB0=0,beep enable
	rGPBCON=(rGPBCON|0x03)&0xFFFFFFFD;//GPB0设置为output
    rGPBUP|=0x01;   //disable GPF pull up
	rGPBDAT=(rGPBDAT&0xFFFFFFFE)|0x01;
	ClearPending(BIT_ALLMSK);
	Delay(10000);
	//GPB0=1,beep disable
    rGPBCON=(rGPBCON|0x03)&0xFFFFFFFD;//GPB0设置为output
    rGPBUP|=0x01;   //disable GPF pull up
	rGPBDAT=(rGPBDAT&0xFFFFFFFE)|0x00;
    CloseAlarm();
}