AN3371 datasheet(36/45 Pages) STMICROELECTRONICS

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RTC firmware driver API

AN3371

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Doc ID 018624 Rev 5

3.1.8

Backup data registers configuration

To write to the RTC backup data registers, use the

RTC_WriteBackupRegister() function.

To read the RTC backup data registers, use the

RTC_ReadBackupRegister() function.

3.2

Function groups and description

The STM32 RTC driver can be divided into 14 function groups related to the functions

embedded in the RTC peripheral.

●

RTC configuration to the default reset state

●

RTC initialization and configuration functions

●

RTC time and date configuration functions

●

RTC alarm configuration functions

●

RTC wakeup timer configuration functions

●

RTC daylight saving configuration functions

●

RTC output pin configuration functions

●

RTC digital calibration (coarse and smooth) configuration functions

●

RTC time-stamp configuration functions

●

RTC Tamper configuration functions

●

RTC backup registers configuration functions

●

RTC tamper, time-stamp pin selection

●

RTC shift control synchronization function

●

RTC flags and IT management functions

Table 16.

RTC function groups

Group

Function name

Description

ULPM

density

ULPH

density

series

Function used to set the RTC configuration to the default reset state

RTC_DeInit

Deinitializes the RTC registers to

their default reset values.

Yes

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