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Enabling access to backup registers

Question asked by evans.mark.001 on Apr 22, 2016
Latest reply on Apr 22, 2016 by FTITI.Walid
I am using the STM32F091RC with the HAL libraries.
I am trying to gain access to the backup registers and I am trying:

PWR->CR |= 0x100;

to set bit 8.  However it will not change the bit as though I am blocked out and it remains 0.  I have tried calling HAL_PWR_EnableBkUpAccess(); but the bit still remains off.  Any help would be really appreciated!


thank you!

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