text: /***************************************************************************//**
   * @file
   * @brief Real Time Counter (RTC) peripheral API
   * @author Energy Micro AS
   * @version 3.20.2
   *******************************************************************************
   * @section License
   * <b>(C) Copyright 2014 Silicon Labs, http://www.silabs.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: Silicon Labs has no
   * obligation to support this Software. Silicon Labs 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.
   *
   * Silicon Labs 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 "em_device.h"
  #if defined(RTC_COUNT) && (RTC_COUNT > 0)
  
  #include <stdbool.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 /* defined(RTC_COUNT) && (RTC_COUNT > 0) */
  #endif /* __EM_RTC_H */
  