IWDG
[STM32F4xx_StdPeriph_Driver]

IWDG driver modules. More...

Modules
	IWDG_Exported_Constants
	IWDG_Private_Functions
Defines
#define	KR_KEY_RELOAD   ((uint16_t)0xAAAA)
#define	KR_KEY_ENABLE   ((uint16_t)0xCCCC)
Functions
void	IWDG_WriteAccessCmd (uint16_t IWDG_WriteAccess)
	Enables or disables write access to IWDG_PR and IWDG_RLR registers.
void	IWDG_SetPrescaler (uint8_t IWDG_Prescaler)
	Sets IWDG Prescaler value.
void	IWDG_SetReload (uint16_t Reload)
	Sets IWDG Reload value.
void	IWDG_ReloadCounter (void)
	Reloads IWDG counter with value defined in the reload register (write access to IWDG_PR and IWDG_RLR registers disabled).
void	IWDG_Enable (void)
	Enables IWDG (write access to IWDG_PR and IWDG_RLR registers disabled).
FlagStatus	IWDG_GetFlagStatus (uint16_t IWDG_FLAG)
	Checks whether the specified IWDG flag is set or not.

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Detailed Description

IWDG driver modules.

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Function Documentation

void IWDG_Enable

(

void

)

Enables IWDG (write access to IWDG_PR and IWDG_RLR registers disabled).

Parameters:

None

Return values:

None

FlagStatus IWDG_GetFlagStatus

(

uint16_t

IWDG_FLAG

)

Checks whether the specified IWDG flag is set or not.

Parameters:

IWDG_FLAG,:

specifies the flag to check. This parameter can be one of the following values: IWDG_FLAG_PVU: Prescaler Value Update on going IWDG_FLAG_RVU: Reload Value Update on going

Return values:

The

new state of IWDG_FLAG (SET or RESET).

void IWDG_ReloadCounter

(

void

)

Reloads IWDG counter with value defined in the reload register (write access to IWDG_PR and IWDG_RLR registers disabled).

Parameters:

None

Return values:

None

void IWDG_SetPrescaler

(

uint8_t

IWDG_Prescaler

)

Sets IWDG Prescaler value.

Parameters:

IWDG_Prescaler,:

specifies the IWDG Prescaler value. This parameter can be one of the following values: IWDG_Prescaler_4: IWDG prescaler set to 4 IWDG_Prescaler_8: IWDG prescaler set to 8 IWDG_Prescaler_16: IWDG prescaler set to 16 IWDG_Prescaler_32: IWDG prescaler set to 32 IWDG_Prescaler_64: IWDG prescaler set to 64 IWDG_Prescaler_128: IWDG prescaler set to 128 IWDG_Prescaler_256: IWDG prescaler set to 256

Return values:

None

void IWDG_SetReload

(

uint16_t

Reload

)

Sets IWDG Reload value.

Parameters:

Reload,:

specifies the IWDG Reload value. This parameter must be a number between 0 and 0x0FFF.

Return values:

None

void IWDG_WriteAccessCmd

(

uint16_t

IWDG_WriteAccess

)

Enables or disables write access to IWDG_PR and IWDG_RLR registers.

Parameters:

IWDG_WriteAccess,:

new state of write access to IWDG_PR and IWDG_RLR registers. This parameter can be one of the following values: IWDG_WriteAccess_Enable: Enable write access to IWDG_PR and IWDG_RLR registers IWDG_WriteAccess_Disable: Disable write access to IWDG_PR and IWDG_RLR registers

Return values:

None