/* Enables or disables access to the RTC and backup registers.  */
void PWR_BackupAccessCmd(FunctionalState NewState)
/* Enables or disables access to the RTC and backup registers.  */
void PWR_BackupAccessCmd(FunctionalState NewState)
{
    assert_param(IS_FUNCTIONAL_STATE(NewState));
    if(NewState != DISABLE)
    {
        PWR->CR |= 0x00000100;
    }
    else
    {
        PWR->CR &= 0xfffffeff;
    }
}