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Julien Chevalley
237
Drivers/STM32F7xx_HAL_Driver/Inc/stm32f7xx_hal_iwdg.h
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237
Drivers/STM32F7xx_HAL_Driver/Inc/stm32f7xx_hal_iwdg.h
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/**
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******************************************************************************
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* @file stm32f7xx_hal_iwdg.h
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* @author MCD Application Team
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* @brief Header file of IWDG HAL module.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef STM32F7xx_HAL_IWDG_H
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#define STM32F7xx_HAL_IWDG_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f7xx_hal_def.h"
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/** @addtogroup STM32F7xx_HAL_Driver
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* @{
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*/
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/** @defgroup IWDG IWDG
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* @{
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*/
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/* Exported types ------------------------------------------------------------*/
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/** @defgroup IWDG_Exported_Types IWDG Exported Types
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* @{
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*/
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/**
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* @brief IWDG Init structure definition
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*/
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typedef struct
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{
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uint32_t Prescaler; /*!< Select the prescaler of the IWDG.
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This parameter can be a value of @ref IWDG_Prescaler */
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uint32_t Reload; /*!< Specifies the IWDG down-counter reload value.
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This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
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uint32_t Window; /*!< Specifies the window value to be compared to the down-counter.
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This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
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} IWDG_InitTypeDef;
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/**
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* @brief IWDG Handle Structure definition
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*/
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typedef struct
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{
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IWDG_TypeDef *Instance; /*!< Register base address */
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IWDG_InitTypeDef Init; /*!< IWDG required parameters */
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} IWDG_HandleTypeDef;
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/**
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* @}
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*/
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/* Exported constants --------------------------------------------------------*/
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/** @defgroup IWDG_Exported_Constants IWDG Exported Constants
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* @{
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*/
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/** @defgroup IWDG_Prescaler IWDG Prescaler
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* @{
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*/
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#define IWDG_PRESCALER_4 0x00000000u /*!< IWDG prescaler set to 4 */
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#define IWDG_PRESCALER_8 IWDG_PR_PR_0 /*!< IWDG prescaler set to 8 */
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#define IWDG_PRESCALER_16 IWDG_PR_PR_1 /*!< IWDG prescaler set to 16 */
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#define IWDG_PRESCALER_32 (IWDG_PR_PR_1 | IWDG_PR_PR_0) /*!< IWDG prescaler set to 32 */
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#define IWDG_PRESCALER_64 IWDG_PR_PR_2 /*!< IWDG prescaler set to 64 */
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#define IWDG_PRESCALER_128 (IWDG_PR_PR_2 | IWDG_PR_PR_0) /*!< IWDG prescaler set to 128 */
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#define IWDG_PRESCALER_256 (IWDG_PR_PR_2 | IWDG_PR_PR_1) /*!< IWDG prescaler set to 256 */
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/**
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* @}
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*/
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/** @defgroup IWDG_Window_option IWDG Window option
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* @{
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*/
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#define IWDG_WINDOW_DISABLE IWDG_WINR_WIN
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/**
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* @}
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*/
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/**
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* @}
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*/
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/* Exported macros -----------------------------------------------------------*/
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/** @defgroup IWDG_Exported_Macros IWDG Exported Macros
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* @{
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*/
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/**
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* @brief Enable the IWDG peripheral.
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* @param __HANDLE__ IWDG handle
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* @retval None
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*/
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#define __HAL_IWDG_START(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE)
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/**
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* @brief Reload IWDG counter with value defined in the reload register
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* (write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers disabled).
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* @param __HANDLE__ IWDG handle
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* @retval None
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*/
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#define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD)
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup IWDG_Exported_Functions IWDG Exported Functions
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* @{
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*/
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/** @defgroup IWDG_Exported_Functions_Group1 Initialization and Start functions
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* @{
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*/
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/* Initialization/Start functions ********************************************/
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HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg);
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/**
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* @}
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*/
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/** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
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* @{
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*/
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/* I/O operation functions ****************************************************/
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HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg);
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/**
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* @}
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*/
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/**
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* @}
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*/
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/* Private constants ---------------------------------------------------------*/
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/** @defgroup IWDG_Private_Constants IWDG Private Constants
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* @{
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*/
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/**
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* @brief IWDG Key Register BitMask
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*/
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#define IWDG_KEY_RELOAD 0x0000AAAAu /*!< IWDG Reload Counter Enable */
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#define IWDG_KEY_ENABLE 0x0000CCCCu /*!< IWDG Peripheral Enable */
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#define IWDG_KEY_WRITE_ACCESS_ENABLE 0x00005555u /*!< IWDG KR Write Access Enable */
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#define IWDG_KEY_WRITE_ACCESS_DISABLE 0x00000000u /*!< IWDG KR Write Access Disable */
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/**
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* @}
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*/
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/* Private macros ------------------------------------------------------------*/
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/** @defgroup IWDG_Private_Macros IWDG Private Macros
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* @{
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*/
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/**
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* @brief Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
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* @param __HANDLE__ IWDG handle
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* @retval None
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*/
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#define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE)
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/**
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* @brief Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
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* @param __HANDLE__ IWDG handle
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* @retval None
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*/
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#define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE)
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/**
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* @brief Check IWDG prescaler value.
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* @param __PRESCALER__ IWDG prescaler value
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* @retval None
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*/
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#define IS_IWDG_PRESCALER(__PRESCALER__) (((__PRESCALER__) == IWDG_PRESCALER_4) || \
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((__PRESCALER__) == IWDG_PRESCALER_8) || \
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((__PRESCALER__) == IWDG_PRESCALER_16) || \
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((__PRESCALER__) == IWDG_PRESCALER_32) || \
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((__PRESCALER__) == IWDG_PRESCALER_64) || \
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((__PRESCALER__) == IWDG_PRESCALER_128)|| \
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((__PRESCALER__) == IWDG_PRESCALER_256))
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/**
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* @brief Check IWDG reload value.
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* @param __RELOAD__ IWDG reload value
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* @retval None
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*/
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#define IS_IWDG_RELOAD(__RELOAD__) ((__RELOAD__) <= IWDG_RLR_RL)
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/**
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* @brief Check IWDG window value.
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* @param __WINDOW__ IWDG window value
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* @retval None
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*/
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#define IS_IWDG_WINDOW(__WINDOW__) ((__WINDOW__) <= IWDG_WINR_WIN)
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* STM32F7xx_HAL_IWDG_H */
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