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Power control (PWR)

UM1581

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DocID023800 Rev 1

event, RTC TimeStamp event or RTC Wakeup.

 PWR_FLAG_SB : StandBy flag. This flag indicates that

the system was resumed from StandBy mode.

 PWR_FLAG_PVDO : PVD Output. This flag is valid only

if PVD is enabled by the PWR_PVDCmd() function.

 PWR_FLAG_VREFINTRDY : Internal Voltage

Reference Ready flag. This flag indicates the state of the

internal voltage reference, VREFINT.

Return values

 The new state of PWR_FLAG (SET or RESET).

Notes

 None.

17.2.10.2 PWR_ClearFlag

Function Name

void PWR_ClearFlag ( uint32_t PWR_FLAG)

Function Description

Clears the PWR's pending flags.

Parameters

 PWR_FLAG : specifies the flag to clear. This parameter can

be one of the following values:

 PWR_FLAG_WU : Wake Up flag

 PWR_FLAG_SB : StandBy flag

Return values

 None.

Notes

 None.

17.3 PWR Firmware driver defines

17.3.1 PWR

PWR

PWR_Flag

 #define: PWR_FLAG_WU PWR_CSR_WUF

 #define: PWR_FLAG_SB PWR_CSR_SBF

 #define: PWR_FLAG_PVDO PWR_CSR_PVDO

ST STM32F31xx User Manual

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