pstorage example for storage data in the FLASH

RE: pstorage example for storage data in the FLASH

awneil — Mon, 13 May 2019 09:39:32 GMT

[quote userid="8138" url="~/f/nordic-q-a/45710/pstorage-example-for-storage-data-in-the-flash/186532"]It would be really nice if these links actually worked[/quote]

As Edvin said, Nordic recently broke them.

If you find other such broken links, you can report them here:

https://devzone.nordicsemi.com/backstage/f/welcome-to-the-devzone/46958/broken-links-since-moving-back-to-infocentre-from-doclib

(I've done these ones).

RE: pstorage example for storage data in the FLASH

Edvin — Mon, 13 May 2019 07:35:49 GMT

Sorry. We had some issues with our documentation website, and moved back to the old one. These are the libraries that awneil linked to:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Flib_fstorage.html

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Flib_fds.html

RE: pstorage example for storage data in the FLASH

Jordan Archer — Sun, 12 May 2019 23:30:48 GMT

It would be really nice if these links actually worked. What are the current links?

RE: pstorage example for storage data in the FLASH

awneil — Thu, 04 Apr 2019 09:16:16 GMT

these on flash storage might be helpful ...

https://devzone.nordicsemi.com/f/nordic-q-a/35843/flash-data-storage-fds-what-is-the-point-of-files-and-records

https://devzone.nordicsemi.com/f/nordic-q-a/35901/nrf5-sdk-v15-0-0-fds---is-alignment-still-required

https://devzone.nordicsemi.com/f/nordic-q-a/35842/flash-data-storage-fds-what-is-the-page-size

RE: pstorage example for storage data in the FLASH

Edvin — Thu, 04 Apr 2019 07:44:10 GMT

FDS guide: https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_fds_usage

fstorage guide: https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_fstorage

RE: pstorage example for storage data in the FLASH

Bar — Thu, 04 Apr 2019 05:58:29 GMT

Thanks Edvin.

I see the example of the FDS.

I want to write a record which is a struct with a unique name so I can find it even on the next power up. As I look inside it is look that

ret_code_t fds_record_write(fds_record_desc_t * const p_desc, fds_record_t const * const p_record)

do the job. If so I still don't know if the descriptor is written automatically by the file system or I need to give it the data like:

file_id , key. For the p_data I assume this is a pointer to my data to store. Is there a specific structure need or any length just to be u32 size?

ANd how the rec can be const if I dynamically put data to?

Is there a user guide explain the process for writing, reading & delete on that example?

Regards

Bar.

RE: pstorage example for storage data in the FLASH

Edvin — Wed, 03 Apr 2019 11:27:12 GMT

As awneil says, fstorage is the new pstorage. It changed around SDK12 if I don't remember wrong. Check out the examples SDK15.2.0\examples\peripheral\flash_fstorage or SDK15.2.0\examples\peripheral\flash_fds.

fstorage is a very simple flash write library, where you have to manage the addresses yourself.

FDS uses fstorage, and creates records that you can write, edit and delete. It ensures an even wear of the flash, and you don't need to worry about where you want to put your records (addresses).

Hint: If you want to update or delete something you write in flash, you can't use the same address without deleting the entire flash page. This is what FDS handles for you.

Best regards,

Edvin

RE: pstorage example for storage data in the FLASH

awneil — Wed, 03 Apr 2019 11:01:54 GMT

For SDK 15, look at fstorage & FDS:

https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-3-0/lib_fstorage

https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-3-0/lib_fds