sane-st400(5) SANE Scanner Access Now Easy sane-st400(5)NAMEsane-st400 - SANE backend for Siemens ST/Highscan flatbed
scanners
DESCRIPTION
The sane-st400 library implements a SANE (Scanner Access
Now Easy) backend that provides access to Siemens ST400
flatbed scanners and compatibles. At present, the follow-
ing scanners are supported by this backend:
Siemens ST400 (6 bit gray scale)
Siemens ST800 (6 bit gray scale)
The driver supports line art and gray scans up to 8bpp.
The Siemens ST/Highscan series includes several more mod-
els, e.g. the ST300 and ST600. If you own one of these
scanners, or a scanner other than the ones listed above
that works with this backend, please let us know by send-
ing the scanner's model name, SCSI ID, and firmware revi-
sion to sane-devel@mostang.com. Have a look at
http://www.mostang.com/sane/mail.html concerning subscrip-
tion to sane-devel.
DEVICE NAMES
This backend expects device names of the form:
special
Where special is either the path-name for the special
device that corresponds to a SCSI scanner. For SCSI scan-
ners, the special device name must be a generic SCSI
device or a symlink to such a device. Under Linux, such a
device name could be /dev/sga or /dev/sge, for example.
See sane-scsi(5) for details.
CONFIGURATION
The contents of the st400.conf file is a list of device
names that correspond to Siemens scanners. Empty lines
and lines starting with a hash mark (#) are ignored. A
sample configuration file is shown below:
/dev/scanner
# this is a comment
/dev/sge
The default configuration file that is distributed with
SANE looks like this:
scsi SIEMENS "ST 400" Scanner * * 3 0
In this configuration, the driver can only access the
ST400 model at SCSI ID 3 LUN 0 (see section "BUGS" below
for the reason). To use the driver with other scanner
models, add an appropriate line to the configuration file.
For example, to use it with an ST800 at SCSI ID 3 LUN 0,
add the line:
scsi SIEMENS "ST 800" Scanner * * 3 0
FILES
/usr/freeware/etc/sane.d/st400.conf
The backend configuration file (see also descrip-
tion of SANE_CONFIG_DIR below).
/usr/freeware/lib32/sane/libsane-st400.a
The static library implementing this backend.
/usr/freeware/lib32/sane/libsane-st400.so
The shared library implementing this backend (pre-
sent on systems that support dynamic loading).
ENVIRONMENT
SANE_CONFIG_DIR
This environment variable specifies the list of
directories that may contain the configuration
file. Under UNIX, the directories are separated by
a colon (`:'), under OS/2, they are separated by a
semi-colon (`;'). If this variable is not set, the
configuration file is searched in two default
directories: first, the current working directory
(".") and then in /etc/sane.d. If the value of the
environment variable ends with the directory sepa-
rator character, then the default directories are
searched after the explicitly specified directo-
ries. For example, setting SANE_CONFIG_DIR to
"/tmp/config:" would result in directories
"tmp/config", ".", and "/etc/sane.d" being searched
(in this order).
SANE_DEBUG_ST400
If the library was compiled with debug support
enabled, this environment variable controls the
debug level for this backend. E.g., a value of 128
requests all debug output to be printed. Smaller
levels reduce verbosity.
MISSING FUNCTIONALITY
Everything but the most basic stuff.
BUGS
Currently, the backend does not check if the attached
device really is a ST400. It will happily accept every-
thing that matches the configuration entries. This makes
it easy to test the backend with other scanners: Just add
an appropriate line to the configuration file. The con-
figuration file as distributed (see above) only works with
the ST400. Be careful: If there is no config file at all,
the backend defaults to /dev/scanner.
The ST400 answers on all eight SCSI LUNs. Normally this
is not a problem, as LUN support is usually disabled in
SCSI drivers, but if you are seeing multiple instances of
the scanner in a device list, either disable LUNs in your
SCSI setup or change the entry in the configuration file
to match LUN 0 only.
DEBUG
If you encounter a bug please set the environment variable
SANE_DEBUG_ST400 to 128 and try to regenerate the problem.
Then send me a report with the log attached.
If you encounter a SCSI bus error or trimmed and/or
displaced images please also set the environment variable
SANE_DEBUG_SANEI_SCSI to 128 before sending me the report.
SEE ALSOsane(7), sane-scsi(5)
http://www.informatik.uni-oldenburg.de/~ingo/sane/
AUTHOR
Ingo Wilken <Ingo.Wilken@informatik.uni-oldenburg.de>
sane-backends 1.0.12 08 Mar 1999 sane-st400(5)
