nrf52840 use internal flash to build mass storage device

[DannisWong]

Hi

I would like to have a project using 52840 witth softdevice 17, and I need to use internal flash to make a USB mass storage device

I reference to ....\examples\peripheral\usbd_msc example, its Ok in DK with external flash, I try but fail to modify to use internal flash

is there any reference/example or document for this?

Best Regards

Dannis

[Vidar Berg]

H Dannis,

The nRF5 SDK does not provide a block device driver to emulate internal flash memory as a block device, but it should be possible to implement this using the existing drivers in /components/libraries/block_dev/ as a reference. Alternatively, you may consider using the nRF Connect SDK. 

Best regards,

Vidar

[Lorenzo Amicucci]

for nRF Connect SDK: USB Mass Storage sample 
https://docs.nordicsemi.com/bundle/ncs-latest/page/zephyr/samples/subsys/usb/mass/README.html 

in nRF Connect SDK, there is also another option  to send data over USB (but it is USB CDC_ACM )
https://docs.zephyrproject.org/latest/samples/subsys/mgmt/mcumgr/smp_svr/README.html  
https://docs.zephyrproject.org/latest/samples/subsys/mgmt/mcumgr/smp_svr/README.html#building-the-sample-application