rtc.c

这是三星公司的arm7 s3c44b0x芯片的所有外设中断程序

//44BTEST : rtc.c
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\rtc.h"
void __irq Rtc_Tick(void);
char *date[8] = {"","SUN","MON","TUE","WED","THU","FRI","SAT"};
volatile unsigned int sec_tick;
void Display_Rtc(void)
{
	int year;
	int month,day,weekday,hour,min,sec;
	rRTCCON = 0x01; // R/W enable, 1/32768, Normal(merge), No reset
	// Uart_Printf("This test should be excuted once RTC test(Alarm) for RTC initialization\n");
	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("%4x,%2x,%2x,%s,%2x:%2x:%2x\n",year,month,day,date[weekday],hour,min,sec);
	rRTCCON = 0x00; // R/W disable(for power consumption), 1/32768, Normal(merge), No reset
}
volatile int isRtcInt;
void __irq Rtc_Int(void)
{
	rI_ISPC=BIT_RTC;
	//rI_ISPC; //is needed only when cache=on & wrbuf=on & BSFRD=0
	Uart_Printf("RTC Alarm Interrupt O.K.\n");
	isRtcInt=1;
}
int Test_Rtc_Alarm(void)
{
	Uart_Printf("[RTC Alarm Test for S3C44B0X]\n");
	Rtc_Init();
	// rRTCCON = 0x01; // R/W enable, 1/32768, Normal(merge), No reset
	rALMYEAR=TESTYEAR2 ;
	rALMMON =TESTMONTH2;
	rALMDAY =TESTDAY2 ;
	rALMHOUR=TESTHOUR2 ;
	rALMMIN =TESTMIN2 ;
	rALMSEC =TESTSEC2+9;
	isRtcInt=0;
	pISR_RTC=(unsigned int)Rtc_Int;
	rRTCALM=0x7f;
	rRTCCON=0x0;
	rINTMSK=~(BIT_GLOBAL|BIT_RTC);
	while(isRtcInt==0);
		rINTMSK=BIT_GLOBAL;
	rRTCCON = 0x0; // R/W disable(for power consumption), 1/32768, Normal(merge), No reset
	return 1;
}
void Rtc_Init(void)
{
	rRTCCON = 0x01; // R/W enable, 1/32768, Normal(merge), No reset
	rBCDYEAR = TESTYEAR;
	rBCDMON = TESTMONTH;
	rBCDDAY = TESTDAY; // SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7
	rBCDDATE = TESTDATE;
	rBCDHOUR = TESTHOUR;
	rBCDMIN = TESTMIN;
	rBCDSEC = TESTSEC;
}
void Test_Rtc_Tick(void)
{
	Uart_Printf("[RTC Tick interrupt test for S3C44B0X]\n");
	Uart_Printf("Typing any key to exit!!!\n");
	pISR_TICK=(unsigned)Rtc_Tick;
	sec_tick=1;
	rINTMSK=~(BIT_GLOBAL|BIT_TICK);
	rRTCCON=0x0; //R/W disable(for power consumption), 1/32768, Normal(merge), No reset
	rTICINT = 127+(1<<7); //START
	Uart_Getch();
	rINTMSK |= (BIT_GLOBAL | BIT_TICK);
	rRTCCON=0x0; //END
}
void __irq Rtc_Tick(void)
{
	rI_ISPC=BIT_TICK;
	Uart_Printf("\b\b\b\b\b\b\b%03d sec",sec_tick++);
}