I want to write bonding information in the external area

RE: I want to write bonding information in the external area

Hung Bui — Thu, 03 Jun 2021 07:15:02 GMT

Hi Kei,

We do have example for writing to external flash (for example the \peripheral\qspi flash example) but it's not combined with fstorage.
What you would need to do is to study the nrf_fstorage_nvmc.c file where we access the internal flash and convert that into for example nrf_fstorage_spi_eeprom.c so that it access the external EEPROM instead of the internal flash(rewrite the read(), write() functions).

RE: I want to write bonding information in the external area

sdi_kei — Thu, 03 Jun 2021 04:23:56 GMT

thank you for your answer.

This is because we want to write the bonding information to both the internal flash and the external flash to retain the data.

Is there a sample that writes data to an external flash?

Thank you.

RE: I want to write bonding information in the external area

Hung Bui — Wed, 02 Jun 2021 11:56:42 GMT

Hi Kei,

Is the requirement to keep bonding information in external EEPROM a hard requirement ? Could you give more info on why you need to store the data externally ?
As explained in the other case, you can extend the number of page for FDS (in the internal flash) hence extend the number of bonded peers that you can store.

FDS doesn't support external flash out of the box. What you need to do is to modify the fstorage backend (fstorage is used by fds) to store the data on external flash instead of internal flash.