Interface between Flash Data Storage and QSPI MX25R6435F chip

RE: Interface between Flash Data Storage and QSPI MX25R6435F chip

Shahar — Wed, 08 Apr 2020 07:08:37 GMT

Hi,

Seems little late to the party, but if someone still looks for a solution - look at littefs (open source project on github)

Pretty easy to incorporate (most of the stuff you can copy & paste from the nordic SDK examples)

RE: Interface between Flash Data Storage and QSPI MX25R6435F chip

ovrebekk — Fri, 19 Jan 2018 12:40:30 GMT

You might want to have a look at the usbd_msc example, available in the nRF5 SDK v14.2.0:
\nRF5_SDK_14.2.0\examples\peripheral\usbd_msc\

This example implements the FatFS file system, and allows you to access the flash chip on the nRF52840 PDK through the QSPI and the USB.

Please be aware that you are unable to access the flash memory locally when the USB is connected, as the MSC class doesn't implement any methods for sharing the memory when connected.

The fds module can only be used for the internal flash, as mentioned by mrono.

Best regards
Torbjørn Øvrebekk

RE: Interface between Flash Data Storage and QSPI MX25R6435F chip

mrono — Fri, 19 Jan 2018 07:42:33 GMT

I believe the Flash Storage library is only used for accessing the internal flash of the nRF-chip.

I would also be interested to know if there is support already in place for using an external flash chip with FDS, but my understanding is that there isn't.