text: /**************************************************************************//**
   * @file     wwdt.h
   * @version  V3.00
   * $Revision: 4 $
   * $Date: 16/10/25 4:25p $
   * @brief    NUC1261 series Window Watchdog Timet(WWDT) driver header file
   *
   * @note
   * SPDX-License-Identifier: Apache-2.0
   *
   * Copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
   *****************************************************************************/
  #ifndef __WWDT_H__
  #define __WWDT_H__
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  
  /** @addtogroup Standard_Driver Standard Driver
    @{
  */
  
  /** @addtogroup WWDT_Driver WWDT Driver
    @{
  */
  
  /** @addtogroup WWDT_EXPORTED_CONSTANTS WWDT Exported Constants
    @{
  */
  /*---------------------------------------------------------------------------------------------------------*/
  /*  WWDT Prescale Period Constant Definitions                                                              */
  /*---------------------------------------------------------------------------------------------------------*/
  #define WWDT_PRESCALER_1        (0 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 1 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_2        (1 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 2 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_4        (2 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 4 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_8        (3 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 8 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_16       (4 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 16 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_32       (5 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 32 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_64       (6 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 64 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_128      (7 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 128 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_192      (8 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 192 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_256      (9 << WWDT_CTL_PSCSEL_Pos)  /*!< Select max time-out period to 256 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_384      (10 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 384 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_512      (11 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 512 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_768      (12 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 768 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_1024     (13 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 1024 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_1536     (14 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 1536 * (64*WWDT_CLK) */
  #define WWDT_PRESCALER_2048     (15 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 2048 * (64*WWDT_CLK) */
  
  /*---------------------------------------------------------------------------------------------------------*/
  /*  WWDT Reload Counter Keyword Constant Definitions                                                       */
  /*---------------------------------------------------------------------------------------------------------*/
  #define WWDT_RELOAD_WORD        (0x00005AA5)                /*!< Fill this value to WWDT_RLDCNT register to reload WWDT counter */
  
  /*@}*/ /* end of group WWDT_EXPORTED_CONSTANTS */
  
  
  /** @addtogroup WWDT_EXPORTED_FUNCTIONS WWDT Exported Functions
    @{
  */
  
  /**
    * @brief      Clear WWDT Reset System Flag
    *
    * @param      None
    *
    * @return     None
    *
    * @details    This macro is used to clear WWDT time-out reset system flag.
    */
  #define WWDT_CLEAR_RESET_FLAG()     (WWDT->STATUS = WWDT_STATUS_WWDTRF_Msk)
  
  /**
    * @brief      Clear WWDT Compared Match Interrupt Flag
    *
    * @param      None
    *
    * @return     None
    *
    * @details    This macro is used to clear WWDT compared match interrupt flag.
    */
  #define WWDT_CLEAR_INT_FLAG()       (WWDT->STATUS = WWDT_STATUS_WWDTIF_Msk)
  
  /**
    * @brief      Get WWDT Reset System Flag
    *
    * @param      None
    *
    * @retval     0   WWDT time-out reset system did not occur
    * @retval     1   WWDT time-out reset system occurred
    *
    * @details    This macro is used to indicate system has been reset by WWDT time-out reset or not.
    */
  #define WWDT_GET_RESET_FLAG()       ((WWDT->STATUS & WWDT_STATUS_WWDTRF_Msk)? 1 : 0)
  
  /**
    * @brief      Get WWDT Compared Match Interrupt Flag
    *
    * @param      None
    *
    * @retval     0   WWDT compare match interrupt did not occur
    * @retval     1   WWDT compare match interrupt occurred
    *
    * @details    This macro is used to indicate WWDT counter value matches CMPDAT value or not.
    */
  #define WWDT_GET_INT_FLAG()         ((WWDT->STATUS & WWDT_STATUS_WWDTIF_Msk)? 1 : 0)
  
  /**
    * @brief      Get WWDT Counter
    *
    * @param      None
    *
    * @return     WWDT Counter Value
    *
    * @details    This macro reflects the current WWDT counter value.
    */
  #define WWDT_GET_COUNTER()          (WWDT->CNT)
  
  /**
    * @brief      Reload WWDT Counter
    *
    * @param      None
    *
    * @return     None
    *
    * @details    This macro is used to reload the WWDT counter value to 0x3F.
    * @note       User can only write WWDT_RLDCNT register to reload WWDT counter value when current WWDT counter value \n
    *             between 0 and CMPDAT value. If user writes WWDT_RLDCNT when current WWDT counter value is larger than CMPDAT, \n
    *             WWDT reset signal will generate immediately to reset system.
    */
  #define WWDT_RELOAD_COUNTER()       (WWDT->RLDCNT = WWDT_RELOAD_WORD)
  
  void WWDT_Open(uint32_t u32PreScale, uint32_t u32CmpValue, uint32_t u32EnableInt);
  
  /*@}*/ /* end of group WWDT_EXPORTED_FUNCTIONS */
  
  /*@}*/ /* end of group WWDT_Driver */
  
  /*@}*/ /* end of group Standard_Driver */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif //__WWDT_H__
  
  /*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/
  