ST STM32F31xx

UM1581
Real-time clock (RTC)
DocID023800 Rev 1
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are don't care in Alarm comparison. Only SS[11:0] are
compared
 RTC_AlarmSubSecondMask_SS14_13 : SS[14:13]
are don't care in Alarm comparison. Only SS[12:0] are
compared
 RTC_AlarmSubSecondMask_SS14 : SS[14] is don't
care in Alarm comparison. Only SS[13:0] are compared
 RTC_AlarmSubSecondMask_None : SS[14:0] are
compared and must match to activate alarm
Return values
 None.
Notes
 This function is performed only when the Alarm is disabled.
19.2.26.6 RTC_GetAlarmSubSecond
Function Name
uint32_t RTC_GetAlarmSubSecond ( uint32_t RTC_Alarm)
Function Description
Gets the RTC Alarm Subseconds value.
Parameters
 RTC_Alarm.
Return values
 RTC Alarm Subseconds value.
Notes
 None.
19.2.27 WakeUp timer configuration functions
19.2.27.1 RTC_WakeUpClockConfig
Function Name
void RTC_WakeUpClockConfig ( uint32_t RTC_WakeUpClock)
Function Description
Configures the RTC Wakeup clock source.
Parameters
 RTC_WakeUpClock : Wakeup Clock source. This parameter
can be one of the following values:
 RTC_WakeUpClock_RTCCLK_Div16 : RTC Wakeup
Counter Clock = RTCCLK/16
 RTC_WakeUpClock_RTCCLK_Div8 : RTC Wakeup
Counter Clock = RTCCLK/8
 RTC_WakeUpClock_RTCCLK_Div4 : RTC Wakeup
Counter Clock = RTCCLK/4
 RTC_WakeUpClock_RTCCLK_Div2 : RTC Wakeup
Counter Clock = RTCCLK/2