FDS external spi flash

RE: FDS external spi flash

Nguyen Hoan Hoang — Sat, 24 Aug 2019 18:17:43 GMT

This flash driver here is quite easy to use and works with almost all SPI Flash.

https://github.com/IOsonata/IOsonata/blob/master/include/diskio_flash.h

usage example

https://github.com/IOsonata/IOsonata/blob/master/exemples/misc/flash_memory_demo.cpp

RE: FDS external spi flash

kxct — Sat, 24 Aug 2019 08:58:40 GMT

Fds must modify the fds module code to use external flash, because fds will directly read the internal flash data through the data pointer.

RE: FDS external spi flash

Turnaev — Fri, 26 Jul 2019 17:24:14 GMT

Ok. Very good! Thank you!

RE: FDS external spi flash

bjorn-spockeli — Fri, 26 Jul 2019 07:56:09 GMT

Turnaev: The SoftDevice will only use its designated flash area for internal purposes, see SoftDevice memory usage.

RE: FDS external spi flash

Turnaev — Thu, 25 Jul 2019 18:59:24 GMT

Ok.

If I replace fstorage to my own functions working with spi flash, SoftDevice will use any sector of the flash for their internal purposes via NVMC except MBR?

RE: FDS external spi flash

bjorn-spockeli — Thu, 25 Jul 2019 15:45:02 GMT

Turnaev: In the latest SDK the Experimental: Flash Storage library ( which is the backend for FDS) only supports On-chip flash with two backends, either the SD API or through the NVMC directly.

FDS or fstorage is not used by the SoftDevice, it uses the NVMC directly.

Best regards

Bjørn

RE: FDS external spi flash

Turnaev — Thu, 25 Jul 2019 12:47:50 GMT

Two years have passed.

Is it possible now to use an external flash instead of an internal one?

I looked at the FDS source code and realized that this is generally possible, but it is not clear to me how it is used inside the softdevice. And I would not want to remake someone else's library, losing the ability to upgrade to the new version in the future.

RE: FDS external spi flash

bjorn-spockeli — Wed, 22 Feb 2017 11:34:40 GMT

Hi ypearson,

I am afraid that FDS or fstorage, which is used by FDS, support external flash at the current moment. We're looking into this and it will probably be added in a future release of the SDK.

Best regards

Bjørn