[sane-devel] backend configuration error.

[Immanuel CRC Office]

Could you explain how to use the DBG macro?

Crystle

m. allan noah wrote:
> 
> 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 at 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 at 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.
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> 

-- 
Crystle Numan
Administrative Secretary, Immanuel CRC
61 Mohawk Rd. W. Hamilton ON   L9C 1V9
905-385-0662
office at immanuelministries.ca
http://immanuelministries.ca