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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)

ST STM32F31xx User Manual

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