RTC.zip_RTC

/***************************************************************************** * 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 "LPC230x.H" /* LPC23xx/24xx definitions */ #include "type.h" #include "irq.h" #include "timer.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) __irq { 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 ) { alarm_on = 0; /*--- Initialize registers ---*/ AMR = 0; CIIR = 0; CCR = 0x11; //把它的时钟改成取外部时钟，chang by _cs // 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 ******************************************************************************/