at32f421_wwdt.h

/**
  **************************************************************************
  * @file     at32f421_wwdt.h
  * @brief    at32f421 wwdt header file
  **************************************************************************
  *                       Copyright notice & Disclaimer
  *
  * The software Board Support Package (BSP) that is made available to
  * download from Artery official website is the copyrighted work of Artery.
  * Artery authorizes customers to use, copy, and distribute the BSP
  * software and its related documentation for the purpose of design and
  * development in conjunction with Artery microcontrollers. Use of the
  * software is governed by this copyright notice and the following disclaimer.
  *
  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  *
  **************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __AT32F421_WWDT_H
#define __AT32F421_WWDT_H

#ifdef __cplusplus
extern "C" {
#endif


/* Includes ------------------------------------------------------------------*/
#include "at32f421.h"

/** @addtogroup AT32F421_periph_driver
  * @{
  */

/** @addtogroup WWDT
  * @{
  */

/** @defgroup WWDT_enable_bit_definition
  * @brief wwdt enable bit
  * @{
  */

#define WWDT_EN_BIT                      ((uint32_t)0x00000080) /*!< wwdt enable bit */

/**
  * @}
  */

/** @defgroup WWDT_exported_types
  * @{
  */

/**
  * @brief wwdt division type
  */
typedef enum
{
  WWDT_PCLK1_DIV_4096                    = 0x00, /*!< wwdt counter clock = (pclk1/4096)/1) */
  WWDT_PCLK1_DIV_8192                    = 0x01, /*!< wwdt counter clock = (pclk1/4096)/2) */
  WWDT_PCLK1_DIV_16384                   = 0x02, /*!< wwdt counter clock = (pclk1/4096)/4) */
  WWDT_PCLK1_DIV_32768                   = 0x03  /*!< wwdt counter clock = (pclk1/4096)/8) */
} wwdt_division_type;

/**
  * @brief type define wwdt register all
  */
typedef struct
{

  /**
    * @brief wwdt ctrl register, offset:0x00
    */
  union
  {
    __IO uint32_t ctrl;
    struct
    {
      __IO uint32_t cnt                  : 7; /* [6:0] */
      __IO uint32_t wwdten               : 1; /* [7] */
      __IO uint32_t reserved1            : 24;/* [31:8] */
    } ctrl_bit;
  };

  /**
    * @brief wwdt cfg register, offset:0x04
    */
  union
  {
    __IO uint32_t cfg;
    struct
    {
      __IO uint32_t win                  : 7; /* [6:0] */
      __IO uint32_t div                  : 2; /* [8:7] */
      __IO uint32_t rldien               : 1; /* [9] */
      __IO uint32_t reserved1            : 22;/* [31:10] */
    } cfg_bit;
  };

  /**
    * @brief wwdt cfg register, offset:0x08
    */
  union
  {
    __IO uint32_t sts;
    struct
    {
      __IO uint32_t rldf                 : 1; /* [0] */
      __IO uint32_t reserved1            : 31;/* [31:1] */
    } sts_bit;
  };

} wwdt_type;

/**
  * @}
  */

#define WWDT                             ((wwdt_type *) WWDT_BASE)

/** @defgroup WWDT_exported_functions
  * @{
  */

void wwdt_reset(void);
void wwdt_divider_set(wwdt_division_type division);
void wwdt_flag_clear(void);
void wwdt_enable(uint8_t wwdt_cnt);
void wwdt_interrupt_enable(void);
flag_status wwdt_flag_get(void);
void wwdt_counter_set(uint8_t wwdt_cnt);
void wwdt_window_counter_set(uint8_t window_cnt);

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

#ifdef __cplusplus
}
#endif

#endif