[sane-devel] Polling HP Scanjet 7400c buttons?

[Nick Papadonis]

On Wed, 2006-08-09 at 12:22 -0400, Mark Longridge wrote:
> This is good information to have.
> 
> I'll try scanbuttond on my HP 5200C also and report the results.
> 

>From what I understand, there is no backend (low level interface code)
written for HP scanners.  The scanbuttond lead, suggested using a USB
sniffer and running the Windows software, to reverse engineer the
interface.  

I would like to do this, but it will require some research into USB
protocol.