rtc.c

NXP LPC系列AMR7的开发程序源码（LCD

/*****************************************************************************
 *   rtc.c:  Realtime clock C file for NXP LPC23xx/24xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.07.12  ver 1.00    Prelimnary version, first Release
 *
*****************************************************************************/
#include <nxp/iolpc2468.h>
#include "type.h"
#include "irq.h"
#include "timer.h"
#include "rtc.h"

#include <intrinsics.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
**
*****************************************************************************/
__irq __nested __arm void RTCHandler (void)
{
    ILR |= ILR_RTCCIF;  /* clear interrupt flag */

    __enable_interrupt(); /* handles nested interrupt */

    alarm_on = 1;

    VICADDRESS = 0;   /* Acknowledge Interrupt */
}

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

    /*--- Initialize registers ---*/
    AMR = 0;
    CIIR = 0;
    CCR = 0;
    PREINT = PREINT_RTC;
    PREFRAC = PREFRAC_RTC;
    return;
}

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

/*****************************************************************************
** Function name:   RTCStop
**
** Descriptions:    Stop RTC timer
**
** parameters:      None
** Returned value:    None
**
*****************************************************************************/
void RTCStop( void )
{
    /*--- Stop RTC counters ---*/
    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 ---*/
    CCR |= CCR_CTCRST;
    return;
}

/*****************************************************************************
** Function name:   RTCSetTime
**
** Descriptions:    Setup RTC timer value
**
** parameters:      None
** Returned value:    None
**
*****************************************************************************/
void RTCSetTime( RTCTime Time )
{
    SEC = Time.RTC_Sec;
    MIN = Time.RTC_Min;
    HOUR = Time.RTC_Hour;
    DOM = Time.RTC_Mday;
    DOW = Time.RTC_Wday;
    DOY = Time.RTC_Yday;
    MONTH = Time.RTC_Mon;
    YEAR = Time.RTC_Year;
    return;
}

/*****************************************************************************
** Function name:   RTCSetAlarm
**
** Descriptions:    Initialize RTC timer
**
** parameters:      None
** Returned value:    None
**
*****************************************************************************/
void RTCSetAlarm( RTCTime Alarm )
{
    ALSEC = Alarm.RTC_Sec;
    ALMIN = Alarm.RTC_Min;
    ALHOUR = Alarm.RTC_Hour;
    ALDOM = Alarm.RTC_Mday;
    ALDOW = Alarm.RTC_Wday;
    ALDOY = Alarm.RTC_Yday;
    ALMON = Alarm.RTC_Mon;
    ALYEAR = Alarm.RTC_Year;
    return;
}

/*****************************************************************************
** 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 = SEC;
    LocalTime.RTC_Min = MIN;
    LocalTime.RTC_Hour = HOUR;
    LocalTime.RTC_Mday = DOM;
    LocalTime.RTC_Wday = DOW;
    LocalTime.RTC_Yday = DOY;
    LocalTime.RTC_Mon = MONTH;
    LocalTime.RTC_Year = 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 ---*/
    AMR = AlarmMask;
    return;
}

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