ST STM32F31xx

Real-time clock (RTC)
UM1581
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DocID023800 Rev 1
19.2.23 Shift control synchronisation functions
19.2.23.1 RTC_SynchroShiftConfig
Function Name
ErrorStatus RTC_SynchroShiftConfig ( uint32_t
RTC_ShiftAdd1S, uint32_t RTC_ShiftSubFS)
Function Description
Configures the Synchronization Shift Control Settings.
Parameters
 RTC_ShiftAdd1S : : Select to add or not 1 second to the
time Calendar. This parameter can be one of the following
values :
 RTC_ShiftAdd1S_Set : Add one second to the clock
calendar.
 RTC_ShiftAdd1S_Reset : No effect.
 RTC_ShiftSubFS : Select the number of Second Fractions
to Substitute. This parameter can be one any value from 0 to
0x7FFF.
Return values
 An ErrorStatus enumeration value:
 SUCCESS: RTC Shift registers are configured
 ERROR: RTC Shift registers are not configured
Notes
 When REFCKON is set, firmware must not write to Shift
control register
19.2.24 Interrupts and flags management functions
19.2.24.1 RTC_ITConfig
Function Name
void RTC_ITConfig ( uint32_t RTC_IT, FunctionalState
NewState)
Function Description
Enables or disables the specified RTC interrupts.
Parameters
 RTC_IT : specifies the RTC interrupt sources to be enabled
or disabled. This parameter can be any combination of the
following values:
 RTC_IT_TS : Time Stamp interrupt mask
 RTC_IT_WUT : WakeUp Timer interrupt mask
 RTC_IT_ALRB : Alarm B interrupt mask
 RTC_IT_ALRA : Alarm A interrupt mask
 RTC_IT_TAMP : Tamper event interrupt mask
 NewState : new state of the specified RTC interrupts. This
parameter can be: ENABLE or DISABLE.
Return values
 None.
Notes
 None.