usb Mass storage

[lihangneng]

My hardware platform is NRF52833, and the sdk version is nRF5_ SDK_ 17.1.0_ Ddde560, the Bluetooth protocol stack is S140. My project is to use NRF52833 for USB mass storage. The memory is external flash and the communication interface is SPI. NRF52833 has no QSPI peripheral. What can I do to achieve it? At present, I have realized USB reading SD card, and the overall process is known. However, the hardware has been modified and the SD card has been replaced with flash

[Edvin]

Hello,

As far as I know, we do not have any implementations of SPI flash in the nRF5 SDK, so this is something you would have to implement. We do have something for QSPI flash, so perhaps you can reuse something from there, but it really depends on how the SPI flash works.

Best regards,

Edvin

[Edvin]

Then I suggest you look into the USB mass storage device sample that we have for the nRF52840, which uses a QSPI flash. It should be a matter of replacing that QSPI flash with your SPI flash, I would assume.

BR,

Edvin

[lihangneng]

Thank you for your reply, but my hardware system cannot be modified