stm32f4xx_hal_iwdg.h

Go to the documentation of this file.

 
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32F4xx_HAL_IWDG_H
#define STM32F4xx_HAL_IWDG_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal_def.h"
 
/* Exported types ------------------------------------------------------------*/
typedef struct
{
  uint32_t Prescaler;  
  uint32_t Reload;     
} 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)                   
/* 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)
 
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* STM32F4xx_HAL_IWDG_H */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/