218 lines
7.0 KiB
C
218 lines
7.0 KiB
C
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/*
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* @brief Real Time Clock registers and control functions
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*
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* @note
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* Copyright(C) NXP Semiconductors, 2012
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* All rights reserved.
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*
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* @par
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* LPC products. This software is supplied "AS IS" without any warranties of
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* any kind, and NXP Semiconductors and its licensor disclaim any and
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* all warranties, express or implied, including all implied warranties of
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* merchantability, fitness for a particular purpose and non-infringement of
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* intellectual property rights. NXP Semiconductors assumes no responsibility
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* or liability for the use of the software, conveys no license or rights under any
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* patent, copyright, mask work right, or any other intellectual property rights in
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* or to any products. NXP Semiconductors reserves the right to make changes
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* in the software without notification. NXP Semiconductors also makes no
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* representation or warranty that such application will be suitable for the
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* specified use without further testing or modification.
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*
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* @par
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors' and its
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* licensor's relevant copyrights in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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*/
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#include "rtc_001.h"
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/*****************************************************************************
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* Private types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Public types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Private functions
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****************************************************************************/
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/*****************************************************************************
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* Public functions
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****************************************************************************/
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/* Initialize the the RTC peripheral */
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void IP_RTC_Init(IP_RTC_001_T *pRTC)
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{
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do {
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/* Reset RTC clock*/
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pRTC->CCR = RTC_CCR_CTCRST | RTC_CCR_CCALEN;
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} while (pRTC->CCR != (RTC_CCR_CTCRST | RTC_CCR_CCALEN));
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do {
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/* Finish resetting RTC clock */
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pRTC->CCR = RTC_CCR_CCALEN;
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} while (pRTC->CCR != RTC_CCR_CCALEN);
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/* Clear counter increment and alarm interrupt */
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pRTC->ILR = RTC_IRL_RTCCIF | RTC_IRL_RTCALF;
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while (pRTC->ILR != 0) {}
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/* Clear all register to be default */
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pRTC->CIIR = 0x00;
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pRTC->AMR = 0xFF;
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pRTC->CALIBRATION = 0x00;
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}
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/* Reset clock tick counter in the RTC peripheral */
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void IP_RTC_ResetClockTickCounter(IP_RTC_001_T *pRTC)
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{
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pRTC->CCR |= RTC_CCR_CTCRST;
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pRTC->CCR &= (~RTC_CCR_CTCRST) & RTC_CCR_BITMASK;
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}
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/* Start/Stop RTC peripheral */
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void IP_RTC_Enable(IP_RTC_001_T *pRTC, FunctionalState NewState)
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{
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if (NewState == ENABLE) {
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do {
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pRTC->CCR |= RTC_CCR_CLKEN;
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} while ((pRTC->CCR & RTC_CCR_CLKEN) == 0);
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}
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else {
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pRTC->CCR &= (~RTC_CCR_CLKEN) & RTC_CCR_BITMASK;
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}
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}
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/* Enable/Disable Counter increment interrupt for a time type in the RTC peripheral */
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void IP_RTC_CntIncrIntConfig(IP_RTC_001_T *pRTC, uint32_t cntrMask,
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FunctionalState NewState)
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{
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if (NewState == ENABLE) {
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pRTC->CIIR |= cntrMask;
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}
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else {
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pRTC->CIIR &= (~cntrMask) & RTC_AMR_CIIR_BITMASK;
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while (pRTC->CIIR & cntrMask) {}
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}
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}
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/* Enable/Disable Alarm interrupt for a time type in the RTC peripheral */
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void IP_RTC_AlarmIntConfig(IP_RTC_001_T *pRTC, uint32_t alarmMask,
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FunctionalState NewState)
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{
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if (NewState == ENABLE) {
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pRTC->AMR &= (~alarmMask) & RTC_AMR_CIIR_BITMASK;
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}
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else {
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pRTC->AMR |= (alarmMask);
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while ((pRTC->AMR & alarmMask) == 0) {}
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}
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}
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/* Set current time value for a time type in the RTC peripheral */
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void IP_RTC_SetTime(IP_RTC_001_T *pRTC, IP_RTC_TIMEINDEX_T Timetype, uint32_t TimeValue)
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{
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pRTC->TIME[Timetype] = TimeValue;
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}
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/* Get current time value for a type time type */
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uint32_t IP_RTC_GetTime(IP_RTC_001_T *pRTC, IP_RTC_TIMEINDEX_T Timetype)
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{
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return pRTC->TIME[Timetype];
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}
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/* Set full time in the RTC peripheral */
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void IP_RTC_SetFullTime(IP_RTC_001_T *pRTC, IP_RTC_TIME_T *pFullTime)
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{
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IP_RTC_TIMEINDEX_T i;
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uint32_t secs = 0xFF;
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/* Write time to registers and verify second tick didn't update during the
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write cycle. If it did, the time may not be consistent across all fields,
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so write the time again */
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while (secs != pRTC->TIME[RTC_TIMETYPE_SECOND]) {
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/* Write seconds first */
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for (i = RTC_TIMETYPE_SECOND; i < RTC_TIMETYPE_LAST; i++) {
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pRTC->TIME[i] = pFullTime->time[i];
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}
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secs = pRTC->TIME[RTC_TIMETYPE_SECOND];
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}
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}
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/* Get full time from the RTC peripheral */
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void IP_RTC_GetFullTime(IP_RTC_001_T *pRTC, IP_RTC_TIME_T *pFullTime)
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{
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IP_RTC_TIMEINDEX_T i;
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uint32_t secs = 0xFF;
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/* Read full time, but verify second tick didn't change during the read. If
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it did, re-read the time again so it will be consistent across all fields. */
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while (secs != pRTC->TIME[RTC_TIMETYPE_SECOND]) {
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secs = pFullTime->time[RTC_TIMETYPE_SECOND] = pRTC->TIME[RTC_TIMETYPE_SECOND];
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for (i = RTC_TIMETYPE_MINUTE; i < RTC_TIMETYPE_LAST; i++) {
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pFullTime->time[i] = pRTC->TIME[i];
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}
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}
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}
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/* Set alarm time value for a time type */
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void IP_RTC_SetAlarmTime(IP_RTC_001_T *pRTC, IP_RTC_TIMEINDEX_T Timetype, uint32_t ALValue)
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{
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pRTC->ALRM[Timetype] = ALValue;
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}
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/* Get alarm time value for a time */
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uint32_t IP_RTC_GetAlarmTime(IP_RTC_001_T *pRTC, IP_RTC_TIMEINDEX_T Timetype)
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{
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return pRTC->ALRM[Timetype];
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}
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/* Set full alarm time in the RTC peripheral */
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void IP_RTC_SetFullAlarmTime(IP_RTC_001_T *pRTC, IP_RTC_TIME_T *pFullTime)
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{
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IP_RTC_TIMEINDEX_T i;
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for (i = RTC_TIMETYPE_SECOND; i < RTC_TIMETYPE_LAST; i++) {
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pRTC->ALRM[i] = pFullTime->time[i];
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}
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}
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/* Get full alarm time in the RTC peripheral */
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void IP_RTC_GetFullAlarmTime(IP_RTC_001_T *pRTC, IP_RTC_TIME_T *pFullTime)
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{
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IP_RTC_TIMEINDEX_T i;
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for (i = RTC_TIMETYPE_SECOND; i < RTC_TIMETYPE_LAST; i++) {
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pFullTime->time[i] = pRTC->ALRM[i];
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}
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}
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/* Enable/Disable calibration counter in the RTC peripheral */
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void IP_RTC_CalibCounterCmd(IP_RTC_001_T *pRTC, FunctionalState NewState)
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{
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if (NewState == ENABLE) {
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do {
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pRTC->CCR &= (~RTC_CCR_CCALEN) & RTC_CCR_BITMASK;
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} while (pRTC->CCR & RTC_CCR_CCALEN);
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}
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else {
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pRTC->CCR |= RTC_CCR_CCALEN;
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}
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}
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/* Configures Calibration in the RTC peripheral */
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void IP_RTC_CalibConfig(IP_RTC_001_T *pRTC, uint32_t CalibValue, uint8_t CalibDir)
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{
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pRTC->CALIBRATION = ((CalibValue - 1) & RTC_CALIBRATION_CALVAL_MASK)
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| ((CalibDir == RTC_CALIB_DIR_BACKWARD) ? RTC_CALIBRATION_LIBDIR : 0);
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}
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