stm32l4xx_hal_iwdg.h

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/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32L4xx_HAL_IWDG_H
#define STM32L4xx_HAL_IWDG_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal_def.h"

/* Exported types ------------------------------------------------------------*/
typedef struct
{
  uint32_t Prescaler;  
  uint32_t Reload;     
  uint32_t Window;     
} IWDG_InitTypeDef;

typedef struct
{
  IWDG_TypeDef                 *Instance;  
  IWDG_InitTypeDef             Init;       
} IWDG_HandleTypeDef;


/* Exported constants --------------------------------------------------------*/
#define IWDG_PRESCALER_4                0x00000000u                                     
#define IWDG_PRESCALER_8                IWDG_PR_PR_0                                    
#define IWDG_PRESCALER_16               IWDG_PR_PR_1                                    
#define IWDG_PRESCALER_32               (IWDG_PR_PR_1 | IWDG_PR_PR_0)                   
#define IWDG_PRESCALER_64               IWDG_PR_PR_2                                    
#define IWDG_PRESCALER_128              (IWDG_PR_PR_2 | IWDG_PR_PR_0)                   
#define IWDG_PRESCALER_256              (IWDG_PR_PR_2 | IWDG_PR_PR_1)                   
#define IWDG_WINDOW_DISABLE             IWDG_WINR_WIN

/* Exported macros -----------------------------------------------------------*/
#define __HAL_IWDG_START(__HANDLE__)                WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE)

#define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__)       WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD)

/* Exported functions --------------------------------------------------------*/
/* Initialization/Start functions  ********************************************/
HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg);
/* I/O operation functions ****************************************************/
HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg);
/* Private constants ---------------------------------------------------------*/
#define IWDG_KEY_RELOAD                 0x0000AAAAu  
#define IWDG_KEY_ENABLE                 0x0000CCCCu  
#define IWDG_KEY_WRITE_ACCESS_ENABLE    0x00005555u  
#define IWDG_KEY_WRITE_ACCESS_DISABLE   0x00000000u  
/* Private macros ------------------------------------------------------------*/

#define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__)  WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE)

#define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE)

#define IS_IWDG_PRESCALER(__PRESCALER__)      (((__PRESCALER__) == IWDG_PRESCALER_4)  || \
                                               ((__PRESCALER__) == IWDG_PRESCALER_8)  || \
                                               ((__PRESCALER__) == IWDG_PRESCALER_16) || \
                                               ((__PRESCALER__) == IWDG_PRESCALER_32) || \
                                               ((__PRESCALER__) == IWDG_PRESCALER_64) || \
                                               ((__PRESCALER__) == IWDG_PRESCALER_128)|| \
                                               ((__PRESCALER__) == IWDG_PRESCALER_256))

#define IS_IWDG_RELOAD(__RELOAD__)            ((__RELOAD__) <= IWDG_RLR_RL)

#define IS_IWDG_WINDOW(__WINDOW__)            ((__WINDOW__) <= IWDG_WINR_WIN)

#ifdef __cplusplus
}
#endif

#endif /* STM32L4xx_HAL_IWDG_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/