unable to list file the file from usb mass storage class

[DG]

I unable to list file the file from usb mass storage class please guide me is it possible to deactivate usb power enable. ?

thank you

[awneil]

So what have you tried?

Do any other file handling functions work?

What debugging have you done to see where it's going wrong?

You are talking about mass-storage implemented on the nRF52840 itself, aren't you - not the mass storage of the on-board J-Link ?

[Neel]

awneil said:

Do any other file handling functions work?

No. No other file handling functions work. We are also connected over a UART port and the debug statements we see on UART says: "Unable to operate on filesystem while USB is connected"

[awneil]

Neel said:

debug statements we see on UART says: "Unable to operate on filesystem while USB is connected

So have a search in the code to see where that message is generated - that might give you some clues ...