ST STM32F31xx User Manual

Real-time clock (RTC)
UM1581
384/584
DocID023800 Rev 1
Parameters
 RTC_SmoothCalibPeriod : : Select the Smooth Calibration
Period. This parameter can be can be one of the following
values:
 RTC_SmoothCalibPeriod_32sec : The smooth
calibration periode is 32s.
 RTC_SmoothCalibPeriod_16sec : The smooth
calibration periode is 16s.
 RTC_SmoothCalibPeriod_8sec : The smooth
calibartion periode is 8s.
 RTC_SmoothCalibPlusPulses : : Select to Set or reset the
CALP bit. This parameter can be one of the following values:
 RTC_SmoothCalibPlusPulses_Set : Add one
RTCCLK puls every 2**11 pulses.
 RTC_SmoothCalibPlusPulses_Reset : No RTCCLK
pulses are added.
 RTC_SmouthCalibMinusPulsesValue : Select the value of
CALM[8:0] bits. This parameter can be one any value from 0
to 0x000001FF.
Return values
 An ErrorStatus enumeration value:
 SUCCESS: RTC Calib registers are configured
 ERROR: RTC Calib registers are not configured
Notes
 None.
19.2.31 Timestamp configuration functions
19.2.31.1 RTC_TimeStampCmd
Function Name
void RTC_TimeStampCmd ( uint32_t RTC_TimeStampEdge,
FunctionalState NewState)
Function Description
Enables or Disables the RTC TimeStamp functionality with the
specified time stamp pin stimulating edge.
Parameters
 RTC_TimeStampEdge : Specifies the pin edge on which the
TimeStamp is activated. This parameter can be one of the
following:
 RTC_TimeStampEdge_Rising : the Time stamp event
occurs on the rising edge of the related pin.
 RTC_TimeStampEdge_Falling : the Time stamp event
occurs on the falling edge of the related pin.
 NewState : new state of the TimeStamp. This parameter can
be: ENABLE or DISABLE.
Return values
 None.
Notes
 None.

ST STM32F31xx Specifications

General

Brand	ST
Model	STM32F31xx
Category	Microcontrollers
Language	English