Example 'usbd_msc_pca10056' - How to modify the size of 8 MB?

[Bcd]

Hello.

I am testing example 'usbd_msc_pca10056' of 'nRF5 SDK v15.2.0'.

I don't realize how to change the size of the 8 MB mounted device with QSPI from external flash.

External flash is of 64 MB in this DK, I would like to mount the biggest possible size. If possible 64 MB in spite of the 8 MB of the original example.

What should I change in the code to manage this change?

Thanks for your time.

[Simon]

I think you are mixing megabits (Mb) and megabyte (MB), 8 megabits are equal to 1 megabit.  The USB MSC with QSPI supports 8 MB, which is equal to the 64 Mb external flash memory on the nRF52840 (8 MB x 8Mb/MB = 64 Mb). 

Best regards,

Simon

[Bcd]

Hi Simon.USB MSC with QSPI I see that do not support more than 8MB, i understand now my mistake with Mb and MB because of your answer, thanks.

Still I have the doubt of how to change the size of the Master Storage Device from QSPI to be created with USB MSC. If for example I want to create a logic device of 2MB in spite of the original of 8 MB, what define or inicialization line should i change? I do suppose that it is only to change the initialization size line, somewhere  in the code but I cannot find where to. Thanks.