WWDG

WWDG driver modules. More...

Collaboration diagram for WWDG:

Modules
	WWDG_Exported_Constants
	WWDG_Private_Functions

Macros
#define	WWDG_OFFSET   (WWDG_BASE - PERIPH_BASE)
#define	CFR_OFFSET   (WWDG_OFFSET + 0x04)
#define	EWI_BitNumber   0x09
#define	CFR_EWI_BB   (PERIPH_BB_BASE + (CFR_OFFSET * 32) + (EWI_BitNumber * 4))
#define	CFR_WDGTB_MASK   ((uint32_t)0xFFFFFE7F)
#define	CFR_W_MASK   ((uint32_t)0xFFFFFF80)
#define	BIT_MASK   ((uint8_t)0x7F)

Functions
void	WWDG_DeInit (void)
	Deinitializes the WWDG peripheral registers to their default reset values. More...
void	WWDG_SetPrescaler (uint32_t WWDG_Prescaler)
	Sets the WWDG Prescaler. More...
void	WWDG_SetWindowValue (uint8_t WindowValue)
	Sets the WWDG window value. More...
void	WWDG_EnableIT (void)
	Enables the WWDG Early Wakeup interrupt(EWI). More...
void	WWDG_SetCounter (uint8_t Counter)
	Sets the WWDG counter value. More...
void	WWDG_Enable (uint8_t Counter)
	Enables WWDG and load the counter value. More...
FlagStatus	WWDG_GetFlagStatus (void)
	Checks whether the Early Wakeup interrupt flag is set or not. More...
void	WWDG_ClearFlag (void)
	Clears Early Wakeup interrupt flag. More...

Detailed Description

WWDG driver modules.

Function Documentation

void WWDG_ClearFlag

(

void

)

Clears Early Wakeup interrupt flag.

Parameters

None

Return values

None

Definition at line 286 of file stm32f4xx_wwdg.c.

void WWDG_DeInit

(

void

)

Deinitializes the WWDG peripheral registers to their default reset values.

Parameters

None

Return values

None

Definition at line 138 of file stm32f4xx_wwdg.c.

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void WWDG_Enable

(

uint8_t

Counter

)

Enables WWDG and load the counter value.

Parameters

Counter

specifies the watchdog counter value. This parameter must be a number between 0x40 and 0x7F (to prevent generating an immediate reset)

Return values

None

Definition at line 239 of file stm32f4xx_wwdg.c.

void WWDG_EnableIT

(

void

)

Enables the WWDG Early Wakeup interrupt(EWI).

Note

Once enabled this interrupt cannot be disabled except by a system reset.

Parameters

None

Return values

None

Definition at line 196 of file stm32f4xx_wwdg.c.

FlagStatus WWDG_GetFlagStatus

(

void

)

Checks whether the Early Wakeup interrupt flag is set or not.

Parameters

None

Return values

The	new state of the Early Wakeup interrupt flag (SET or RESET)

Definition at line 266 of file stm32f4xx_wwdg.c.

void WWDG_SetCounter

(

uint8_t

Counter

)

Sets the WWDG counter value.

Parameters

Counter

specifies the watchdog counter value. This parameter must be a number between 0x40 and 0x7F (to prevent generating an immediate reset)

Return values

None

Definition at line 208 of file stm32f4xx_wwdg.c.

void WWDG_SetPrescaler

(

uint32_t

WWDG_Prescaler

)

Sets the WWDG Prescaler.

Parameters

WWDG_Prescaler

specifies the WWDG Prescaler. This parameter can be one of the following values: WWDG_Prescaler_1: WWDG counter clock = (PCLK1/4096)/1 WWDG_Prescaler_2: WWDG counter clock = (PCLK1/4096)/2 WWDG_Prescaler_4: WWDG counter clock = (PCLK1/4096)/4 WWDG_Prescaler_8: WWDG counter clock = (PCLK1/4096)/8

Return values

None

Definition at line 154 of file stm32f4xx_wwdg.c.

void WWDG_SetWindowValue

(

uint8_t

WindowValue

)

Sets the WWDG window value.

Parameters

WindowValue

specifies the window value to be compared to the downcounter. This parameter value must be lower than 0x80.

Return values

None

Definition at line 173 of file stm32f4xx_wwdg.c.