Hi,
my scanner has a "scan" button that (at least using their Windows
driver) can be used to launch certain programs on the host system.
I've written something similar for the SANE environment. It's called
"sensed" and works by sending a SCSI "REQUEST SENSE" command to the
scanner in regular intervals (every 2 sec). If the response indicates
that the scan button has been pressed, a program is launched. (This
would usually mean scanadf or scanimage, maybe called by a shell
script that stores the results away properly.)
The current, initial version is very crude, has only been tested with
my Fujitsu M3091DCd scanner, and it doesn't even have a Makefile etc.
(it relies on the SANE SCSI core so you'll have to stuff it into the
"backend" directory, compile and link with libsanei.a).
It's here: http://www.remote.org/frederik/projects/software/sane/
Feel free to play with it. If anyone's willing to help me make this a
proper part of SANE, including it in the "tools" directory, putting it
in CVS and tweaking the Makefiles accordingly, you're most welcome.
But perhaps that should wait for a version that is more configurable
and supports more scanners.
For the SCSI gurus out there, is there any potential disruption by
sending REQUEST SENSE to a device every two seconds? I noticed that
while someone has "grabbed" the device, the call blocks anyway (which
doesn't hurt my program). sensed does not attempt to grab and release
the device; should it?
Bye
Frederik
-- Frederik Ramm ## eMail frederik@remote.org ## N57°48.10' W005°40.32'-- Source code, list archive, and docs: http://www.mostang.com/sane/ To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
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