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Date:   Thu, 22 Dec 2022 16:24:55 -0500
From:   Alan Stern <stern@rowland.harvard.edu>
To:     Dima Pasechnik <dimpase@cs.ox.ac.uk>
Cc:     dima.pasechnik@cs.ox.ac.uk, Greg KH <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org
Subject: Re: usb 1-3: Product: BBC micro:bit CMSIS-DAP not recognised
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A bit off to the side from the main point of this thread, but...

On Thu, Dec 22, 2022 at 10:32:09AM +0000, Dima Pasechnik wrote:
> 
> 
> On 20 December 2022 19:57:05 WET, Alan Stern <stern@rowland.harvard.edu> wrote:
> >> USB Interfaces: MSD, CDC, HID, WebUSB
> >
> >Which agrees with the information on the web site.  I have no idea what 
> >WebUSB is supposed to be.
> 
> WebUSB is a JavaScript API, supported by Chromium -derived browsers (Firefox not there yet)
> 
> https://en.wikipedia.org/wiki/WebUSB

The Wikipedia article agrees with you that WebUSB is a JavaScript API.  
As such, it is used for communication between web browsers and 
JavaScript programs.  Not for communication between programs and USB 
devices.  So I don't understand why a USB device needs to be concerned 
about it.

Alan Stern