Re: Drivers

Ralph Little <[email protected]> Fri, 21 Nov 2025 10:17:45 -0800

Newsgroups	gmane.comp.graphics.scanning.sane.devel
Message-ID	<CAFNXweNnq-GUqY=UkzuwKDEXwFvYURxv4oOht8Rd9qOZqkOyvw@mail.gmail.com>

Hi,

On Thu, Nov 20, 2025 at 10:00 AM Djordje Dragic <[email protected]> wrote:

> Can we use usb sniffer to help develop drivers? I got hp scanjet that is
> unsupported in linux.
>

Yes, it is possible and commonly how it is done. Firstly, a developer would
probably want to know if the device uses a protocol that is already
supported.
Otherwise, writing a new backend is not very difficult but some knowledge
of the API is required. Usually, it is easier to take an existing backend
and modify it to suit, at least I found it so.

Out of interest, which ScanJet do you have?

Cheers,
Ralph