HAL_PWR_DisableBkUpAccess() function

Disables access to the backup domain (RTC registers, RTC backup data registers and backup SRAM).

Syntax

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Declaration

Definition

from stm32f4xx_hal_pwr.h:288

void HAL_PWR_DisableBkUpAccess(void);

Implemented in stm32f4xx_hal_pwr.c:128

Return value

None

Notes

If the HSE divided by 2, 3, ..31 is used as the RTC clock, the Backup Domain Access should be kept enabled. The following sequence is required to bypass the delay between DBP bit programming and the effective disabling of the backup domain. Please check the Errata Sheet for more details under "Possible delay in backup domain protection disabling/enabling after programming the DBP bit" section.

Examples

HAL_PWR_DisableBkUpAccess() is referenced by 10 libraries and example projects:

References

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HAL_PWR_DisableBkUpAccess() function

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Notes

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