📄 rtc.c
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//====================================================================
// File Name : RTC.c
// Function : S3C2440 RTC Head file
// Program :
// Date : May 06, 2002
// Version : 0.1
// History
// 2410 v0.0 : Programming start (March 11, 2002) -> SOP
// 2440 v0.1 : edited by junon
//====================================================================
#include "2440addr.h"
#include "2440lib.h"
#include "RTC.h"
char *day[8] = {" ","Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
volatile int isRtcInt, isInit = 2; //April 01, 2002 SOP
volatile unsigned int sec_tick;
void * func_rtc_test[][2]=
{
//RTC
(void *)Test_Rtc_Alarm, "RTC Alarm ",
(void *)Display_Rtc, "RTC Display ",
(void *)Test_Rtc_Tick, "RTC Tick ",
0,0
};
void Rtc_Test(void)
{
int i, sel;
while(1)
{
i = 0;
Uart_Printf("+-----------------[ RTC test ]--------------------+\n");
while(1)
{ //display menu
Uart_Printf("| %2d:%s\n",i+1,func_rtc_test[i][1]);
i++;
if((int)(func_rtc_test[i][0])==0) break;
}
Uart_Printf("| %2d:Previous menu\n", i+1);
Uart_Printf("+-------------------------------------------------+\n");
Uart_Printf(" Select the number to test : ");
sel = Uart_GetIntNum();
sel--;
if(sel == i){
return;
}if(sel>=0 && (sel<((sizeof(func_rtc_test)-1)/8)) ){
( (void (*)(void)) (func_rtc_test[sel][0]) )();
}else{
Uart_Printf("Wrong number seleted.. Try again!!\n\n\n");
}
}
}
//=======================================
//Period = (n + 1) / 128 second
// n : Tick time count value (1~127)
//=======================================
//********************[ Display_Rtc ]*********************************
void Display_Rtc(void)
{
// int year,tmp;
int year,tmp,key;
int month,date,weekday,hour,min,sec;
Uart_Printf("[ Display RTC Test ]\n");
Uart_Printf("0. RTC Initialize 1. RTC Time Setting 2. Only RTC Display\n\n");
Uart_Printf("Selet : ");
key = Uart_GetIntNum();
Uart_Printf("\n\n");
isInit = key;
if(isInit == 0)
{
Rtc_Init();
isInit = 2;
}
else if(isInit == 1)
{
Rtc_TimeSet();
isInit = 2;
}
rRTCCON = 0x01; //No reset, Merge BCD counters, 1/32768, RTC Control enable
// Uart_Printf("This test should be excuted once RTC test(Alarm) for RTC initialization\n");
Uart_Printf("Press any key to exit.\n\n");
while(!Uart_GetKey())
{
while(1)
{
if(rBCDYEAR == 0x99)
year = 0x1999;
else
year = 0x2000 + rBCDYEAR;
month = rBCDMON;
weekday = rBCDDAY;
date = rBCDDATE;
hour = rBCDHOUR;
min = rBCDMIN;
sec = rBCDSEC;
if(sec!=tmp)
{
tmp = sec;
break;
}
}
Uart_Printf("%2x : %2x : %2x %10s, %2x/%2x/%4x\n",hour,min,sec,day[weekday],month,date,year);
// Uart_Printf("%2x : %2x : %2x %9s, %2x/%2x/%4x rBCDDATE = %x, weekday= %x\n",hour,min,sec,day[weekday],month,date,year,rBCDDATE,weekday);
}
rRTCCON = 0x0; //No reset, Merge BCD counters, 1/32768, RTC Control disable(for power consumption)
Uart_Printf("\n\n\n");
}
//************************[ Test_Rtc_Alarm ]******************************
void Test_Rtc_Alarm(void)
{
Uart_Printf("[ RTC Alarm Test for S3C2440 ]\n");
Rtc_Init();
rRTCCON = 0x01; //No reset, Merge BCD counters, 1/32768, RTC Control enable
rALMYEAR = TESTYEAR2 ;
rALMMON = TESTMONTH2;
rALMDATE = TESTDATE2 ;
rALMHOUR = TESTHOUR2 ;
rALMMIN = TESTMIN2 ;
rALMSEC = TESTSEC2 + 9;
Uart_Printf("After 9 sec, alarm interrupt will occur.. \n");
isRtcInt = 0;
pISR_RTC = (unsigned int)Rtc_Int;
rRTCALM = 0x7f; //Global,Year,Month,Day,Hour,Minute,Second alarm enable
rRTCCON = 0x0; //No reset, Merge BCD counters, 1/32768, RTC Control disable
rINTMSK = ~(BIT_RTC);
while(isRtcInt==0);
rINTMSK = BIT_ALLMSK;
Uart_Printf("\n\n\n");
// rRTCCON = 0x0; //RTC Control disable(for power consumption), 1/32768, Normal(merge), No reset
}
//************************[ Rtc_Init ]*********************************
void Rtc_Init(void)
{
rRTCCON = rRTCCON & ~(0xf) | 0x1; //No reset, Merge BCD counters, 1/32768, RTC Control enable
rBCDYEAR = rBCDYEAR & ~(0xff) | TESTYEAR;
rBCDMON = rBCDMON & ~(0x1f) | TESTMONTH;
rBCDDATE = rBCDDATE & ~(0x3f) | TESTDATE;
rBCDDAY = rBCDDAY & ~(0x7) | TESTDAY; //SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7
rBCDHOUR = rBCDHOUR & ~(0x3f) | TESTHOUR;
rBCDMIN = rBCDMIN & ~(0x7f) | TESTMIN;
rBCDSEC = rBCDSEC & ~(0x7f) | TESTSEC;
rRTCCON = 0x0; //No reset, Merge BCD counters, 1/32768, RTC Control disable
}
//************************[ Rtc_TimeSet ]*********************************
void Rtc_TimeSet(void)
{
int syear,smonth,sdate,shour,smin,ssec;
int sday;
Uart_Printf("[ RTC Time Setting ]\n");
Rtc_Init(); //RTC Initialize
Uart_Printf("RTC Time Initialized ...\n");
Uart_Printf("Year (Two digit the latest)[0~99] : ");
syear = Uart_GetIntNum();
Uart_Printf("Month [1~12] : ");
smonth = Uart_GetIntNum();
Uart_Printf("Date [1~31] : ");
sdate = Uart_GetIntNum();
Uart_Printf("\n1:Sunday 2:Monday 3:Thesday 4:Wednesday 5:Thursday 6:Friday 7:Saturday\n");
Uart_Printf("Day of the week : ");
sday = Uart_GetIntNum();
Uart_Printf("Hour [0~23] : ");
shour = Uart_GetIntNum();
Uart_Printf("Minute [0~59] : ");
smin = Uart_GetIntNum();
Uart_Printf("Second [0~59] : ");
ssec = Uart_GetIntNum();
rRTCCON = rRTCCON & ~(0xf) | 0x1; //No reset, Merge BCD counters, 1/32768, RTC Control enable
rBCDYEAR = ((syear/10)<<4)+(syear%10);
rBCDMON = ((smonth/10)<<4)+(smonth%10);
rBCDDAY = sday; //SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7
rBCDDATE = ((sdate/10)<<4)+(sdate%10);
rBCDHOUR = ((shour/10)<<4)+(shour%10);
rBCDMIN = ((smin/10)<<4)+(smin%10);
rBCDSEC = ((ssec/10)<<4)+(ssec%10);
Uart_Printf("%2d : %2d : %2d %10s, %2d/%2d/%4d\n",shour,smin,ssec,day[sday],smonth,sdate,syear);
Uart_Printf("%2x : %2x : %2x %10s, %2x/%2x/%4x\n"
,rBCDHOUR,rBCDMIN,rBCDSEC,day[rBCDDAY],rBCDMON,rBCDDATE,rBCDYEAR);
rRTCCON = 0x0; //No reset, Merge BCD counters, 1/32768, RTC Control disable
}
//************************[ Test_Rtc_Tick ]****************************
void Test_Rtc_Tick(void)
{
Uart_Printf("[ RTC Tick interrupt(1 sec) test for S3C2440 ]\n");
Uart_Printf("Press any key to exit.\n");
Uart_Printf("\n");
Uart_Printf("\n");
Uart_Printf(" ");
pISR_TICK = (unsigned)Rtc_Tick;
sec_tick = 1;
rINTMSK = ~(BIT_TICK);
rRTCCON = 0x0; //No reset[3], Merge BCD counters[2], BCD clock select XTAL[1], RTC Control disable[0]
rTICNT = (1<<7) + 127; //Tick time interrupt enable, Tick time count value 127
//Period = (n + 1) / 128 second n:Tick time count value(1~127)
Uart_Getch();
rINTMSK = BIT_ALLMSK;
rRTCCON = 0x0; //No reset[3], Merge BCD counters[2], BCD clock select XTAL[1], RTC Control disable[0]
Uart_Printf("\n\n\n");
}
//-----------------------------------------------------------------------
void __irq EINT0_int(void)
{
rSRCPND = BIT_EINT0;
rINTPND = BIT_EINT0;
rINTPND;
rRTCRST = (1<<3) | 3; //Round second reset enable, over than 30 sec
}
//-----------------------------------------------------------------------
void __irq Rtc_Int(void)
{
rSRCPND = BIT_RTC;
rINTPND = BIT_RTC;
rINTPND;
Uart_Printf("RTC Alarm Interrupt O.K.\n");
isRtcInt = 1;
}
//---------------------------------------------------------------------
void __irq Rtc_Tick(void)
{
rSRCPND = BIT_TICK;
rINTPND = BIT_TICK;
rINTPND;
Uart_Printf("\b\b\b\b\b\b\b%03d sec",sec_tick++);
}
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