176 lines
6.0 KiB
C
176 lines
6.0 KiB
C
/**********************************************************************
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* $Id$ lpc43xx_atimer.c 2011-06-02
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*//**
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* @file lpc43xx_atimer.c
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* @brief Contains all functions support for Alarm Timer firmware
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* library on lpc43xx
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* @version 1.0
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* @date 02. June. 2011
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2011, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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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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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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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’
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* relevant copyright 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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/* Peripheral group ----------------------------------------------------------- */
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/** @addtogroup ATIMER
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* @{
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*/
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/* Includes ------------------------------------------------------------------- */
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#include "lpc43xx_atimer.h"
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#include "lpc43xx_cgu.h"
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/* If this source file built with example, the lpc43xx FW library configuration
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* file in each example directory ("lpc43xx_libcfg.h") must be included,
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* otherwise the default FW library configuration file must be included instead
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*/
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#ifdef __BUILD_WITH_EXAMPLE__
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#include "lpc43xx_libcfg.h"
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#else
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#include "lpc43xx_libcfg_default.h"
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#endif /* __BUILD_WITH_EXAMPLE__ */
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#ifdef _ATIMER
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/* Private Functions ---------------------------------------------------------- */
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/*********************************************************************//**
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* @brief Initial Alarm Timer device
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* @param[in] ATIMERx Timer selection, should be: LPC_ATIMER
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* @param[in] PresetValue Count of 1/1024s for Alarm
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* @return None
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**********************************************************************/
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void ATIMER_Init(LPC_ATIMER_Type *ATIMERx, uint32_t PresetValue)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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//set power
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if (ATIMERx== LPC_ATIMER)
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{
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/*Set Clock Here */
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CGU_EnableEntity(CGU_CLKSRC_32KHZ_OSC, ENABLE);
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}
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ATIMER_UpdatePresetValue(ATIMERx, PresetValue);
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// Clear interrupt pending
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ATIMER_ClearIntStatus(ATIMERx);
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}
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/*********************************************************************//**
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* @brief Close ATIMER device
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* @param[in] ATIMERx Pointer to timer device, should be: LPC_ATIMER
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* @return None
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**********************************************************************/
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void ATIMER_DeInit (LPC_ATIMER_Type *ATIMERx)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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// Disable atimer
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ATIMER_ClearIntStatus(ATIMERx);
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ATIMER_IntDisable(ATIMERx);
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// Disable power
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// if (ATIMERx== LPC_ATIMER0)
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// CGU_ConfigPPWR (CGU_PCONP_PCATIMER0, DISABLE);
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}
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/*********************************************************************//**
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* @brief Clear ATIMER Interrupt Status
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* @param[in] ATIMERx Pointer to timer device, should be: LPC_ATIMER
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* @return None
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**********************************************************************/
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void ATIMER_ClearIntStatus(LPC_ATIMER_Type *ATIMERx)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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ATIMERx->CLR_STAT = 1;
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while((ATIMERx->STATUS & 1) == 1);
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}
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/*********************************************************************//**
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* @brief Set ATIMER Interrupt Status
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* @param[in] ATIMERx Pointer to timer device, should be: LPC_ATIMER
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* @return None
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**********************************************************************/
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void ATIMER_SetIntStatus(LPC_ATIMER_Type *ATIMERx)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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ATIMERx->SET_STAT = 1;
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while((ATIMERx->STATUS & 1) == 0);
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}
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/*********************************************************************//**
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* @brief Enable ATIMER Interrupt
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* @param[in] ATIMERx Pointer to timer device, should be: LPC_ATIMER
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* @return None
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**********************************************************************/
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void ATIMER_IntEnable(LPC_ATIMER_Type *ATIMERx)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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ATIMERx->SET_EN = 1;
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while((ATIMERx->ENABLE & 1) == 0);
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}
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/*********************************************************************//**
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* @brief Disable ATIMER Interrupt
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* @param[in] ATIMERx Pointer to timer device, should be: LPC_ATIMER
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* @return None
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**********************************************************************/
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void ATIMER_IntDisable(LPC_ATIMER_Type *ATIMERx)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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ATIMERx->CLR_EN = 1;
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while((ATIMERx->ENABLE & 1) == 1);
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}
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/*********************************************************************//**
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* @brief Update Preset value
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* @param[in] ATIMERx Pointer to timer device, should be: LPC_ATIMER
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* @param[in] PresetValue updated preset value
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* @return None
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**********************************************************************/
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void ATIMER_UpdatePresetValue(LPC_ATIMER_Type *ATIMERx,uint32_t PresetValue)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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ATIMERx->PRESET = PresetValue;
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}
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/*********************************************************************//**
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* @brief Read value of preset register
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* @param[in] ATIMERx Pointer to timer/counter device, should be: LPC_ATIMER
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* @return Value of capture register
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**********************************************************************/
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uint32_t ATIMER_GetPresetValue(LPC_ATIMER_Type *ATIMERx)
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{
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CHECK_PARAM(PARAM_ATIMERx(ATIMERx));
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return ATIMERx->PRESET;
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}
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/**
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* @}
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*/
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#endif /* _ATIMER */
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/**
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* @}
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*/
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