Not sure if it helps you or not but the hp driver has a 'Front button
wait' option which if set, causes the scanner to wait until the button
is pressed before starting the scan.
Frederik Ramm wrote:
>
> Question 3 - How to support the "hot button(s)"
>
> This is probably beyond the scope of SANE but maybe somebody knows
> something. The scanner has the following controls: a "scan" button, a
> "duplex" button, a "send to" button, and a number dial that can select
> numbers 0-9. The scanner does nothing with these buttons; the obvious
> purpose (as supported by some Windows software that comes with it) is
> that you can insert a document and then, by pressing one of them, have
> your computer launch a program that does something. (My idea of use
> would be assigning categories to the numbers, i.e. 1=bills, 2=bank
> letters, 3=personal letters, etc., and then use the number dial and
> "send" button on the scanner to store documents away in the proper
> folders on my Linux box.)
>
> The SCSI docs tell me that there are some extended fields in the
> scanner's response to the INQUIRY command that tell you if one of
> these buttons has been pressed. The respective fields are "true" for
> three seconds after button press. So I imagine I'd need some sort of
> "inquiry daemon" that sends the command to the scanner every 2 seconds
> or so and then launches whatever program has been defined when certain
> fields in the response data have certain values.
>
> Does such a program already exist? If not, can somebody point me to a
> very very simple program that (outside of the SANE context) sends a
> simple SCSI command to a device and evaluates the response, so that I
> could work from there?
>
> Bye
> Frederik
>
> --
> Frederik Ramm ## eMail frederik@remote.org ## N57°48.10' W005°40.32'
>
> --
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