rtc.c

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/*****************************************************************************
 *   rtc.c:  Realtime clock C file for NXP LPC23xx/34xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.07.12  ver 1.00    Prelimnary version, first Release
 *
*****************************************************************************/
#include "../lpc_config.h"
#include "rtc.h"

volatile DWORD alarm_on = 0;

/*****************************************************************************
** Function name:               RTCHandler
**
** Descriptions:                RTC interrupt handler, it executes based on the
**                              the alarm setting
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
//void RTCHandler (void)
//{
//    RTC_ILR |= ILR_RTCCIF;            /* clear interrupt flag */
//    IENABLE;                  /* handles nested interrupt */
//
//    alarm_on = 1;
//
//    IDISABLE;
//    VICVectAddr = 0;          /* Acknowledge Interrupt */
//}

/*****************************************************************************
** Function name:               RTCInit
**
** Descriptions:                Initialize RTC timer
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
void RTCInit( void )
{
        PCONP |= 1<<9;
    alarm_on = 0;

    /*--- Initialize registers ---*/    
    RTC_AMR = 0;
    RTC_CIIR = 0;
    RTC_CCR = 0;
    RTC_PREINT = PREINT_RTC;
    RTC_PREFRAC = PREFRAC_RTC;
    return;
}

/*****************************************************************************
** Function name:               RTCStart
**
** Descriptions:                Start RTC timer
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
void RTCStart( void ) 
{
    /*--- Start RTC counters ---*/
    RTC_CCR |= CCR_CLKSRC | CCR_CLKEN;
    RTC_ILR = ILR_RTCCIF;
    return;
}

/*****************************************************************************
** Function name:               RTCStop
**
** Descriptions:                Stop RTC timer
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
void RTCStop( void )
{   
    /*--- Stop RTC counters ---*/
    RTC_CCR &= ~CCR_CLKEN;
    return;
} 

/*****************************************************************************
** Function name:               RTC_CTCReset
**
** Descriptions:                Reset RTC clock tick counter
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
void RTC_CTCReset( void )
{   
    /*--- Reset CTC ---*/
    RTC_CCR |= CCR_CTCRST;
    return;
}

/*****************************************************************************
** Function name:               RTCSetTime
**
** Descriptions:                Setup RTC timer value
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
void RTCSetTime( RTCTime Time ) 
{
    RTC_SEC = Time.RTC_Sec;
    RTC_MIN = Time.RTC_Min;
    RTC_HOUR = Time.RTC_Hour;
    RTC_DOM = Time.RTC_Mday;
    RTC_DOW = Time.RTC_Wday;
    RTC_DOY = Time.RTC_Yday;
    RTC_MONTH = Time.RTC_Mon;
    RTC_YEAR = Time.RTC_Year;    
    return;
}

/*****************************************************************************
** Function name:               RTCSetAlarm
**
** Descriptions:                Initialize RTC timer
**
** parameters:                  None
** Returned value:              None
** 
*****************************************************************************/
void RTCSetAlarm( RTCTime Alarm ) 
{   
    RTC_ALSEC = Alarm.RTC_Sec;
    RTC_ALMIN = Alarm.RTC_Min;
    RTC_ALHOUR = Alarm.RTC_Hour;
    RTC_ALDOM = Alarm.RTC_Mday;
    RTC_ALDOW = Alarm.RTC_Wday;
    RTC_ALDOY = Alarm.RTC_Yday;
    RTC_ALMON = Alarm.RTC_Mon;
    RTC_ALYEAR = Alarm.RTC_Year;    
    return;
}


/*****************************************************************************
** Function name:               RTCClearTime
**
** Descriptions:                Initialize RTC timer
**
** parameters:                  None
** Returned value:              None
**
*****************************************************************************/
void RTCClearTime()
{
    RTC_ALSEC = 0;
    RTC_ALMIN = 0;
    RTC_ALHOUR = 0;
    RTC_ALDOM = 01;
    RTC_ALDOW = 01;
    RTC_ALDOY = 11;
    RTC_ALMON = 01;
    RTC_ALYEAR = 2011;
}


/*****************************************************************************
** Function name:               RTCGetTime
**
** Descriptions:                Get RTC timer value
**
** parameters:                  None
** Returned value:              The data structure of the RTC time table
** 
*****************************************************************************/
RTCTime RTCGetTime( void ) 
{
    RTCTime LocalTime;
    
    LocalTime.RTC_Sec = RTC_SEC;
    LocalTime.RTC_Min = RTC_MIN;
    LocalTime.RTC_Hour = RTC_HOUR;
    LocalTime.RTC_Mday = RTC_DOM;
    LocalTime.RTC_Wday = RTC_DOW;
    LocalTime.RTC_Yday = RTC_DOY;
    LocalTime.RTC_Mon = RTC_MONTH;
    LocalTime.RTC_Year = RTC_YEAR;
    return ( LocalTime );    
}

/*****************************************************************************
** Function name:               RTCSetAlarmMask
**
** Descriptions:                Set RTC timer alarm mask
**
** parameters:                  Alarm mask setting
** Returned value:              None
** 
*****************************************************************************/
void RTCSetAlarmMask( DWORD AlarmMask ) 
{
    /*--- Set alarm mask ---*/    
    RTC_AMR = AlarmMask;
    return;
}

/*****************************************************************************
**                            End Of File
******************************************************************************/