stm32h7: using the backup sram

[joelguittet]

Hello!

Has anyone tried to use the backup sram of the stm32h7 series ?
I have NUCLEO-H745ZI evaluation board and would like to use it. My current issue actually is that the content of the SRAM is not persistent after rebooting the board. backup_sram is "enabled" in my device tree and I have already added SCB_CleanDCache_by_Addr to force cleaning the cache.

Any other point I should activate?

Thanks for any feedback!

Joel

[joelguittet]

Answering my own question, I forgotten CONFIG_STM32_BACKUP_SRAM=y in the project configuration. Now working.