I would like to know, how front-end gets the list of all available backends on the system?
does it look directly into dll.conf file or communicates with sane daemon to get the list of available backends? Rupesh ------------------------------ Message: 5 Date: Wed, 26 Jul 2006 07:50:04 -0400 (EDT) From: "m. allan noah" <an...@pfeiffer.edu> Subject: Re: [sane-devel] backend configuration error. To: sane-devel@lists.alioth.debian.org Message-ID: <pine.lnx.4.61.0607260745200.31...@limos.pfeiffer.edu> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed try using the DBG macro in your backend to print some messages from within sane_init() and sane_get_devices(). then call: SANE_DEBUG_BACKENDNAME=255 scanimage -L Replace BACKENDNAME with name of your backend in all caps. if you dont see your messages, then the dll backend may not be loading your backend. try using `strace scanimage -L` to be sure. allan On Wed, 26 Jul 2006, Rupesh Tarpara wrote: > Hi, > > I have hand held image scanner which is a USB-ACM device and uses standard > ACM driver (serial communication protocol over USB interface). The device > file created by driver is /dev/input/ttyACM0 (virtual serial device). > > Following is the build procedure I have followed. > > I have downloaded "sane-backends 1.0.18" source and made the following > changes to incorporate my device: > 1. I have created a new backend source file for this device. > 2. I have modified "sane-backends-1.0.18/configure.in" and > "sane-backends-1.0.18/backend/Makefile.in" files to include my backend. > 3. executed autoconf, ./configure, make and make install > 4. all libraries were installed at "/usr/local/lib/sane" > > I modified the "/usr/local/etc/sane.d/dll.conf" file to include my backend > name. > > I am using Xsane as frontend. When I run Xsane, it gives error message as > "no devices available" > > ----------------------------------------------------------------------- > My queries, > > 1) are there any backend configuration steps which I might have skipped? > 2) What is the procedure frontend follows when it is executed? > 3) How does the communication happens (or initiates) between Frontend<----> > backend <------> device? > 4) What are the steps to be followed for new backend installation? > > ------------------------------------- > > Additional information about OS and sane version I am using. > > I am using RedHat AS3 OS, following is the output of uname -a > [root@mypc root]# uname -a > Linux mypc.home.com 2.4.21-40.EL #1 Thu Feb 2 22:32:00 EST 2006 i686 i686 > i386 GNU/Linux > > [root@mypc root]# scanimage --version > scanimage (sane-backends) 1.0.18; backend version 1.0.18 > > Regards, > > Rupesh > > > > > > http://www.patni.com > World-Wide Partnerships. World-Class Solutions. > _____________________________________________________________________ > > This e-mail message may contain proprietary, confidential or legally > privileged information for the sole use of the person or entity to > whom this message was originally addressed. Any review, e-transmission > dissemination or other use of or taking of any action in reliance upon > this information by persons or entities other than the intended > recipient is prohibited. If you have received this e-mail in error > kindly delete this e-mail from your records. If it appears that this > mail has been forwarded to you without proper authority, please notify > us immediately at netad...@patni.com and delete this mail. > _____________________________________________________________________ > -- "so don't tell us it can't be done, putting down what you don't know. money isn't our god, integrity will free our souls" - Max Cavalera ------------------------------ _______________________________________________ sane-devel mailing list sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/sane-devel End of sane-devel Digest, Vol 13, Issue 32 ****************************************** http://www.patni.com World-Wide Partnerships. World-Class Solutions. _____________________________________________________________________ This e-mail message may contain proprietary, confidential or legally privileged information for the sole use of the person or entity to whom this message was originally addressed. Any review, e-transmission dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this e-mail in error kindly delete this e-mail from your records. If it appears that this mail has been forwarded to you without proper authority, please notify us immediately at netad...@patni.com and delete this mail. _____________________________________________________________________ From panem...@gmail.com Thu Jul 27 12:23:19 2006 From: panem...@gmail.com (=?UTF-8?Q?Parag_N(=E0=A4=AA=E0=A4=B0=E0=A4=BE=E0=A5=9A)?=) Date: Thu Jul 27 12:23:32 2006 Subject: [sane-devel] Front Configuration. In-Reply-To: <002501c6b174$662e4970$9c09a...@patni.com> References: <20060726120138.8038a9d...@as1.patni.com> <002501c6b174$662e4970$9c09a...@patni.com> Message-ID: <f4586a2e0607270523q76b23b2fi58ccc53b34db9...@mail.gmail.com> Hi, On 7/27/06, Rupesh Tarpara <rupesh.tarp...@patni.com> wrote: > I would like to know, how front-end gets the list of all available backends > on the system? > > does it look directly into dll.conf file or communicates with sane daemon to > get the list of available backends? I would like to see first what is sane-find-scanner output and scanimage -L output. Then did u add your backend name to dll.conf.in and create backendname.conf file and add accordingly that new name to Makefile.in and wherever it applies by taking any backendname and searching where its entries got included in Makefiles. If yes then only u can use autoconf, ./configure, make and make install. Regards, Parag.
