ST STM32F2 User Manual

UM1940
LL WWDG Generic Driver
DocID028236 Rev 2
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70 LL WWDG Generic Driver
70.1 WWDG Firmware driver API description
70.1.1 Detailed description of functions
LL_WWDG_Enable
Function name
__STATIC_INLINE void LL_WWDG_Enable (WWDG_TypeDef *
WWDGx)
Function description
Enable Window Watchdog.
Parameters
WWDGx: WWDG Instance
Return values
None:
Notes
It is enabled by setting the WDGA bit in the WWDG_CR
register, then it cannot be disabled again except by a reset.
This bit is set by software and only cleared by hardware after
a reset. When WDGA = 1, the watchdog can generate a
reset.
Reference Manual to
LL API cross
reference:
CR WDGA LL_WWDG_Enable
LL_WWDG_IsEnabled
Function name
__STATIC_INLINE uint32_t LL_WWDG_IsEnabled
(WWDG_TypeDef * WWDGx)
Function description
Checks if Window Watchdog is enabled.
Parameters
WWDGx: WWDG Instance
Return values
State: of bit (1 or 0).
Reference Manual to
LL API cross
reference:
CR WDGA LL_WWDG_IsEnabled
LL_WWDG_SetCounter
Function name
__STATIC_INLINE void LL_WWDG_SetCounter
(WWDG_TypeDef * WWDGx, uint32_t Counter)
Function description
Set the Watchdog counter value to provided value (7-bits T[6:0])
Parameters
WWDGx: WWDG Instance
Counter: 0..0x7F (7 bit counter value)
Return values
None:
Notes
When writing to the WWDG_CR register, always write 1 in the
MSB b6 to avoid generating an immediate reset This counter
is decremented every (4096 x 2expWDGTB) PCLK cycles A
reset is produced when it rolls over from 0x40 to 0x3F (bit T6

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English