Backup Domain Access function

Backup Domain Access function. More...

Functions
void	PWR_DeInit (void)
	Deinitializes the PWR peripheral registers to their default reset values. More...
void	PWR_BackupAccessCmd (FunctionalState NewState)
	Enables or disables access to the backup domain (RTC registers, RTC backup data registers and backup SRAM). More...

Detailed Description

Backup Domain Access function.

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                            Backup Domain Access function 
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  After reset, the backup domain (RTC registers, RTC backup data 
  registers and backup SRAM) is protected against possible unwanted 
  write accesses. 
  To enable access to the RTC Domain and RTC registers, proceed as follows:
    - Enable the Power Controller (PWR) APB1 interface clock using the
      RCC_APB1PeriphClockCmd() function.
    - Enable access to RTC domain using the PWR_BackupAccessCmd() function.

Function Documentation

void PWR_BackupAccessCmd

(

FunctionalState

NewState

)

Enables or disables access to the backup domain (RTC registers, RTC backup data registers and backup SRAM).

Note

If the HSE divided by 2, 3, ..31 is used as the RTC clock, the Backup Domain Access should be kept enabled.

Parameters

NewState,:

new state of the access to the backup domain. This parameter can be: ENABLE or DISABLE.

Return values

None

void PWR_DeInit

(

void

)

Deinitializes the PWR peripheral registers to their default reset values.

Parameters

None

Return values

None