fstorage error issue with sdk 14.1.0

RE: fstorage error issue with sdk 14.1.0

Sigurd — Wed, 31 Jan 2018 14:59:21 GMT

Yes, to preserve application data during a DFU you need to use DFU_APP_DATA_RESERVED . See this page. I will close this post, and we can continue the discussion in your other post.

RE: fstorage error issue with sdk 14.1.0

edmond.yun — Tue, 30 Jan 2018 06:55:30 GMT

Hello, Sigurd,

I arrange current situation in detail, please refer the following link,

devzone.nordicsemi.com/.../

and there is a question : if using fds module, the user data can be preserved after doing dfu, is it right ? the data is stored in app data region of memory map.... where is located(saved) the data in memory map ? is app data ? I would like to preserve the user data after doing dfu, if so, need to use app data ? is it right ? please help to let me know the method...

thanks.

RE: fstorage error issue with sdk 14.1.0

Sigurd — Mon, 29 Jan 2018 13:12:27 GMT

Hi,

Please see the figure in this link. It is correct that the end address on the last page of the flash is 0x80000 on the nRF52832, but if you have added DFU/bootloader to your code, the bootloader, MBR and bootloader settings page will be located at the end of flash here. In the code you posted, you are using 0x0007F000 - 0x000FF000, this is the bootloader settings page if you have added the bootloader and cannot be used for application data.

About erasing, what does the nrf_fstorage_erase() function return when you try to erase ?

Note: "nrf_fstorage_sd" calls are queued until they are done and will cause the queue to fill up if you issue too many calls in a short window of time. Erase operations are by far the slowest and can take 10s of milliseconds to complete. Whenever you perform an fstorage call you should verify that the there was room in the queue before progressing. If there was not enough room the application should wait before retrying.

RE: fstorage error issue with sdk 14.1.0

edmond.yun — Mon, 29 Jan 2018 04:54:07 GMT

if using the original example, it can write the data in 0x3e000 ~ 0x3f000. but it can't try to erase the data, and if using the same example in my code(adding DFU, more custom service), write/erase function can't be normally worked, why...? please help to let me know the root cause,

thanks.