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/***************************************************************************//**
* @file
* @brief Real Time Counter (RTC) peripheral API
* @author Energy Micro AS
* @version 3.0.0
*******************************************************************************
* @section License
* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.com</b>
*******************************************************************************
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
* obligation to support this Software. Energy Micro AS is providing the
* Software "AS IS", with no express or implied warranties of any kind,
* including, but not limited to, any implied warranties of merchantability
* or fitness for any particular purpose or warranties against infringement
* of any proprietary rights of a third party.
*
* Energy Micro AS will not be liable for any consequential, incidental, or
* special damages, or any other relief, or for any claim by any third party,
* arising from your use of this Software.
*
******************************************************************************/
#ifndef __EM_RTC_H
#define __EM_RTC_H
#include <stdbool.h>
#include "em_part.h"
#ifdef __cplusplus
extern "C" {
#endif
/***************************************************************************//**
* @addtogroup EM_Library
* @{
******************************************************************************/
/***************************************************************************//**
* @addtogroup RTC
* @{
******************************************************************************/
/*******************************************************************************
******************************* STRUCTS ***********************************
******************************************************************************/
/** RTC initialization structure. */
typedef struct
{
bool enable; /**< Start counting when init completed. */
bool debugRun; /**< Counter shall keep running during debug halt. */
bool comp0Top; /**< Use compare register 0 as max count value. */
} RTC_Init_TypeDef;
/** Suggested default config for RTC init structure. */
#define RTC_INIT_DEFAULT \
{ true, /* Start counting when init done */ \
false, /* Disable updating during debug halt */ \
true /* Restart counting from 0 when reaching COMP0 */ \
}
/*******************************************************************************
***************************** PROTOTYPES **********************************
******************************************************************************/
uint32_t RTC_CompareGet(unsigned int comp);
void RTC_CompareSet(unsigned int comp, uint32_t value);
/***************************************************************************//**
* @brief
* Get RTC counter value.
*
* @return
* Current RTC counter value.
******************************************************************************/
__STATIC_INLINE uint32_t RTC_CounterGet(void)
{
return(RTC->CNT);
}
void RTC_CounterReset(void);
void RTC_Enable(bool enable);
void RTC_FreezeEnable(bool enable);
void RTC_Init(const RTC_Init_TypeDef *init);
/***************************************************************************//**
* @brief
* Clear one or more pending RTC interrupts.
*
* @param[in] flags
* RTC interrupt sources to clear. Use a set of interrupt flags OR-ed
* together to clear multiple interrupt sources for the RTC module
* (RTC_IFS_nnn).
******************************************************************************/
__STATIC_INLINE void RTC_IntClear(uint32_t flags)
{
RTC->IFC = flags;
}
/***************************************************************************//**
* @brief
* Disable one or more RTC interrupts.
*
* @param[in] flags
* RTC interrupt sources to disable. Use a set of interrupt flags OR-ed
* together to disable multiple interrupt sources for the RTC module
* (RTC_IFS_nnn).
******************************************************************************/
__STATIC_INLINE void RTC_IntDisable(uint32_t flags)
{
RTC->IEN &= ~(flags);
}
/***************************************************************************//**
* @brief
* Enable one or more RTC interrupts.
*
* @note
* Depending on the use, a pending interrupt may already be set prior to
* enabling the interrupt. Consider using RTC_IntClear() prior to enabling
* if such a pending interrupt should be ignored.
*
* @param[in] flags
* RTC interrupt sources to enable. Use a set of interrupt flags OR-ed
* together to set multiple interrupt sources for the RTC module
* (RTC_IFS_nnn).
******************************************************************************/
__STATIC_INLINE void RTC_IntEnable(uint32_t flags)
{
RTC->IEN |= flags;
}
/***************************************************************************//**
* @brief
* Get pending RTC interrupt flags.
*
* @note
* The event bits are not cleared by the use of this function.
*
* @return
* Pending RTC interrupt sources. Returns a set of interrupt flags OR-ed
* together for multiple interrupt sources in the RTC module (RTC_IFS_nnn).
******************************************************************************/
__STATIC_INLINE uint32_t RTC_IntGet(void)
{
return(RTC->IF);
}
/***************************************************************************//**
* @brief
* Set one or more pending RTC interrupts from SW.
*
* @param[in] flags
* RTC interrupt sources to set to pending. Use a set of interrupt flags
* OR-ed together to set multiple interrupt sources for the RTC module
* (RTC_IFS_nnn).
******************************************************************************/
__STATIC_INLINE void RTC_IntSet(uint32_t flags)
{
RTC->IFS = flags;
}
void RTC_Reset(void);
/** @} (end addtogroup RTC) */
/** @} (end addtogroup EM_Library) */
#ifdef __cplusplus
}
#endif
#endif /* __EM_RTC_H */
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