ST STM32F31xx

Independent watchdog (IWDG)
UM1581
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DocID023800 Rev 1
14.2.7 IWDG activation function
14.2.7.1 IWDG_Enable
Function Name
void IWDG_Enable ( void )
Function Description
Enables IWDG (write access to IWDG_PR and IWDG_RLR
registers disabled).
Parameters
 None.
Return values
 None.
Notes
 None.
14.2.8 Flag management function
14.2.8.1 IWDG_GetFlagStatus
Function Name
FlagStatus IWDG_GetFlagStatus ( uint16_t IWDG_FLAG)
Function Description
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
 IWDG_FLAG_WVU : Counter Window Value Update on
going
Return values
 The new state of IWDG_FLAG (SET or RESET).
Notes
 None.
14.3 IWDG Firmware driver defines
14.3.1 IWDG
IWDG
IWDG_Flag
 #define: IWDG_FLAG_PVU ((uint16_t)0x0001)