IO operation functions

IO operation functions. More...

Functions
HAL_StatusTypeDef	HAL_WWDG_Refresh (WWDG_HandleTypeDef *hwwdg)
	Refresh the WWDG.
void	HAL_WWDG_IRQHandler (WWDG_HandleTypeDef *hwwdg)
	Handle WWDG interrupt request.
__weak void	HAL_WWDG_EarlyWakeupCallback (WWDG_HandleTypeDef *hwwdg)
	WWDG Early Wakeup callback.

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Detailed Description

IO operation functions.

  ==============================================================================
                      ##### IO operation functions #####
  ==============================================================================
  [..]
    This section provides functions allowing to:
    (+) Refresh the WWDG.
    (+) Handle WWDG interrupt request and associated function callback.

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Function Documentation

void HAL_WWDG_EarlyWakeupCallback

(

WWDG_HandleTypeDef *

hwwdg

)

WWDG Early Wakeup callback.

Parameters:

hwwdg

pointer to a WWDG_HandleTypeDef structure that contains the configuration information for the specified WWDG module.

Return values:

None

Definition at line 395 of file stm32f4xx_hal_wwdg.c.

Referenced by HAL_WWDG_Init(), HAL_WWDG_IRQHandler(), and HAL_WWDG_UnRegisterCallback().

void HAL_WWDG_IRQHandler

(

WWDG_HandleTypeDef *

hwwdg

)

Handle WWDG interrupt request.

Note:

The Early Wakeup Interrupt (EWI) can be used if specific safety operations or data logging must be performed before the actual reset is generated. The EWI interrupt is enabled by calling HAL_WWDG_Init function with EWIMode set to WWDG_EWI_ENABLE. When the downcounter reaches the value 0x40, and EWI interrupt is generated and the corresponding Interrupt Service Routine (ISR) can be used to trigger specific actions (such as communications or data logging), before resetting the device.

Parameters:

hwwdg

pointer to a WWDG_HandleTypeDef structure that contains the configuration information for the specified WWDG module.

Return values:

None

Definition at line 366 of file stm32f4xx_hal_wwdg.c.

References __HAL_WWDG_CLEAR_FLAG, __HAL_WWDG_GET_FLAG, __HAL_WWDG_GET_IT_SOURCE, __WWDG_HandleTypeDef::EwiCallback, HAL_WWDG_EarlyWakeupCallback(), WWDG_FLAG_EWIF, and WWDG_IT_EWI.

HAL_StatusTypeDef HAL_WWDG_Refresh

(

WWDG_HandleTypeDef *

hwwdg

)

Refresh the WWDG.

Parameters:

hwwdg

pointer to a WWDG_HandleTypeDef structure that contains the configuration information for the specified WWDG module.

Return values:

HAL

status

Definition at line 343 of file stm32f4xx_hal_wwdg.c.

References WWDG_InitTypeDef::Counter, __WWDG_HandleTypeDef::Init, and __WWDG_HandleTypeDef::Instance.