WWDT Exported Functions

Collaboration diagram for WWDT Exported Functions:

Macros
#define	WWDT_CLEAR_RESET_FLAG()   (WWDT->STATUS = (WWDT->STATUS & ~WWDT_STATUS_WWDTIF_Msk) | WWDT_STATUS_WWDTRF_Msk)
	Clear WWDT Reset System Flag. More...
#define	WWDT_CLEAR_INT_FLAG()   (WWDT->STATUS = (WWDT->STATUS & ~WWDT_STATUS_WWDTRF_Msk) | WWDT_STATUS_WWDTIF_Msk)
	Clear WWDT Compared Match Interrupt Flag. More...
#define	WWDT_GET_RESET_FLAG()   ((WWDT->STATUS & WWDT_STATUS_WWDTRF_Msk)? 1 : 0)
	Get WWDT Reset System Flag. More...
#define	WWDT_GET_INT_FLAG()   ((WWDT->STATUS & WWDT_STATUS_WWDTIF_Msk)? 1 : 0)
	Get WWDT Compared Match Interrupt Flag. More...
#define	WWDT_GET_COUNTER()   (WWDT->CNT)
	Get WWDT Counter. More...
#define	WWDT_RELOAD_COUNTER()   (WWDT->RLDCNT = WWDT_RELOAD_WORD)
	Reload WWDT Counter. More...

Functions
void	WWDT_Open (uint32_t u32PreScale, uint32_t u32CmpValue, uint32_t u32EnableInt)
	Open WWDT and start counting. More...

Detailed Description

Macro Definition Documentation

WWDT_CLEAR_INT_FLAG

#define WWDT_CLEAR_INT_FLAG

(

)

(WWDT->STATUS = (WWDT->STATUS & ~WWDT_STATUS_WWDTRF_Msk) | WWDT_STATUS_WWDTIF_Msk)

Clear WWDT Compared Match Interrupt Flag.

Parameters

None

Returns

None

This macro is used to clear WWDT compared match interrupt flag.

Definition at line 84 of file wwdt.h.

WWDT_CLEAR_RESET_FLAG

#define WWDT_CLEAR_RESET_FLAG

(

)

(WWDT->STATUS = (WWDT->STATUS & ~WWDT_STATUS_WWDTIF_Msk) | WWDT_STATUS_WWDTRF_Msk)

Clear WWDT Reset System Flag.

Parameters

None

Returns

None

This macro is used to clear WWDT time-out reset system flag.

Definition at line 73 of file wwdt.h.

WWDT_GET_COUNTER

#define WWDT_GET_COUNTER

(

)

(WWDT->CNT)

Get WWDT Counter.

Parameters

None

Returns

WWDT Counter Value

This macro reflects the current WWDT counter value.

Definition at line 119 of file wwdt.h.

WWDT_GET_INT_FLAG

#define WWDT_GET_INT_FLAG

(

)

((WWDT->STATUS & WWDT_STATUS_WWDTIF_Msk)? 1 : 0)

Get WWDT Compared Match Interrupt Flag.

Parameters

None

Return values

0	WWDT compare match interrupt did not occur
1	WWDT compare match interrupt occurred

This macro is used to indicate WWDT counter value matches CMPDAT value or not.

Definition at line 108 of file wwdt.h.

WWDT_GET_RESET_FLAG

#define WWDT_GET_RESET_FLAG

(

)

((WWDT->STATUS & WWDT_STATUS_WWDTRF_Msk)? 1 : 0)

Get WWDT Reset System Flag.

Parameters

None

Return values

0	WWDT time-out reset system did not occur
1	WWDT time-out reset system occurred

This macro is used to indicate system has been reset by WWDT time-out reset or not.

Definition at line 96 of file wwdt.h.

WWDT_RELOAD_COUNTER

#define WWDT_RELOAD_COUNTER

(

)

(WWDT->RLDCNT = WWDT_RELOAD_WORD)

Reload WWDT Counter.

Parameters

None

Returns

None

This macro is used to reload the WWDT counter value to 0x3F.

Note

User can only write WWDT_RLDCNT register to reload WWDT counter value when current WWDT counter value
between 0 and CMPDAT value. If user writes WWDT_RLDCNT when current WWDT counter value is larger than CMPDAT,
WWDT reset signal will generate immediately to reset system.

Definition at line 133 of file wwdt.h.

Function Documentation

WWDT_Open()

void WWDT_Open	(	uint32_t	u32PreScale,
		uint32_t	u32CmpValue,
		uint32_t	u32EnableInt
	)

Open WWDT and start counting.

Parameters

[in]	u32PreScale	Pre-scale setting of WWDT counter. Valid values are: WWDT_PRESCALER_1 WWDT_PRESCALER_2 WWDT_PRESCALER_4 WWDT_PRESCALER_8 WWDT_PRESCALER_16 WWDT_PRESCALER_32 WWDT_PRESCALER_64 WWDT_PRESCALER_128 WWDT_PRESCALER_192 WWDT_PRESCALER_256 WWDT_PRESCALER_384 WWDT_PRESCALER_512 WWDT_PRESCALER_768 WWDT_PRESCALER_1024 WWDT_PRESCALER_1536 WWDT_PRESCALER_2048
[in]	u32CmpValue	Setting the window compared value. Valid values are between 0x0 to 0x3F.
[in]	u32EnableInt	Enable WWDT time-out interrupt function. Valid values are TRUE and FALSE.

Returns

None

This function makes WWDT module start counting with different counter period by pre-scale setting and compared window value.

Note

This WWDT_CTL register can be write only one time after chip is powered on or reset.

Definition at line 55 of file wwdt.c.