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Real-time clock (RTC)

UM1581

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DocID023800 Rev 1

 RTC_WakeUpClock_CK_SPRE_16bits : RTC Wakeup

Counter Clock = CK_SPRE

 RTC_WakeUpClock_CK_SPRE_17bits : RTC Wakeup

Counter Clock = CK_SPRE

Return values

 None.

Notes

 The WakeUp Clock source can only be changed when the

RTC WakeUp is disabled (Use the

RTC_WakeUpCmd(DISABLE)).

19.2.27.2 RTC_SetWakeUpCounter

Function Name

void RTC_SetWakeUpCounter ( uint32_t

RTC_WakeUpCounter)

Function Description

Configures the RTC Wakeup counter.

Parameters

 RTC_WakeUpCounter : specifies the WakeUp counter. This

parameter can be a value from 0x0000 to 0xFFFF.

Return values

 None.

Notes

 The RTC WakeUp counter can only be written when the RTC

WakeUp is disabled (Use the RTC_WakeUpCmd(DISABLE)).

19.2.27.3 RTC_GetWakeUpCounter

Function Name

uint32_t RTC_GetWakeUpCounter ( void )

Function Description

Returns the RTC WakeUp timer counter value.

Parameters

 None.

Return values

 The RTC WakeUp Counter value.

Notes

 None.

ST STM32F31xx User Manual

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