sane-umax_pp - SANE backend for Umax parallel port flatbed
scanners
DESCRIPTION
The sane-umax_pp library implements a SANE (Scanner Access
Now Easy) backend that provides access to Umax parallel
port flatbed scanners. The following scanners work with
this backend:
Model:
--------------------
Astra 1220P
HP3200C
Astra 1600P
Astra 2000P
This backend handles 75x75, 150x150, 300x300, 600x600 and
600x1200 dpi scan resolutions, in color and gray levels.
There is no lineart mode.
These scanners share the same ASIC. Only parts such as CCD
and ADC change from one to another. They even all reports
being UMAX Astra 1220P via IEEE1284. There isn't direct
way to recognize them properly. Under windows, model is
set by the driver, regardless of the hardware.
The current version of the backend use only EPP mode to
communicate with the scanner. PS/2 and SPP mode aren't
implemented. It is recommended that you set your parallel
port to EPP in BIOS with the current version of this back
end. ECPEPP will only work if you use a 2.4 kernel with
ppdev support.
This backend does support parport sharing only if you have
a kernel with ppdev support.
Note that the backend needs to run as root. To allow user
access to the scanner run the backend through the network
interface (See saned(1) and sane-net(5)). A more relaxed
solution (security wise) is to add suid bit to the fron
tend (See chmod(1)). The backend drop root priviledges as
soon as it can, right after gaining direct access to IO
ports.
DEVICE NAMES
This backend expects device names of the form:
port addr
Where addr is the base address of the port your scanner is
attached to. Known ports are 0x378 (lp1) 0x278 (lp2) and
0x3BC (lp0). Note that if you are using a Kernel 2.2.x or
of the base address. However, this backend requires the
base address of your port. If you are not sure which port
your scanner is connected to, have a look at your
/etc/conf.modules.
You can rename any device using the
name devname
model model
vendor vendor
options. These options apply to the last port option.
CONFIGURATION
Please make sure to edit umax_pp.conf before you use the
backend.
The contents of the umax_pp.conf file is a list of options
and device names that correspond to Umax scanners. Empty
lines and lines starting with a hash mark (#) are ignored.
The height options supported are red-gain, green-gain,
blue-gain, red-highlight, green-highlight, blue-highlight,
astra, and buffer.
Options red-gain , green-gain and blue-gain allow you to
adjust the sensitivy of your scanner for the given color.
Values range from 0 (lowest gain) to 15 (highest). When
all three gains are set to 0, the backend does auto gain
tuning.
Options red-highlight , green-highlight and blue-highlight
allow you to adjust the highlight of your scanner for the
given color. Values range from 0 (lowest highlight) to 15
(highest).
Option astra allows you to change the model of your scan
ner. Current auto detection is based on side effects on
scanning when using 1220P command set on other models, so
it may fail on unkown hardware combination. Valid values
are 1220, 1600 and 2000.
Option buffer allows you to change the size of the scan
buffer. The size must be specified in bytes. The default
value is 2 megabytes.
/etc/sane.d/umax_pp.conf
The backend configuration file (see also descrip
tion of SANE_CONFIG_DIR below).
/usr/lib/sane/libsane-umax_pp.a
The static library implementing this backend.
/usr/lib/sane/libsane-umax_pp.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_UMAX_PP
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.
level debug output
------- ------------------------------
0 nothing
1 errors
2 warnings & minor errors
3 additional information
4 debug information
5 code flow (not supported yet)
6 special debug information
SANE_DEBUG_UMAX_PP_LOW
This variable sets the debug level for the SANE
interface for the Umax ASIC. Note that enabling
this will spam your terminal with some million
level debug output
------- -------------------------------
0 nothing
1 errors
8 command blocks
16 detailed code flow
32 dump datafiles
255 everything
SEE ALSO
sane(7), sane-net(5), saned(1)
For latest bug fixes and information see
http://umax1220p.sourceforge.net/
AUTHOR
Stéphane VOLTZ <svoltz@wanadoo.fr>, man page derived from
mustek_pp man page by Jochen Eisinger
<jochen.eisinger@gmx.net>
BUG REPORTS
If something doesn't work, please contact me. But I need
some information about your scanner to be able to help
you...
SANE version
run "scanimage -V" to determine this
the backend version and your scanner hardware
run "SANE_DEBUG_UMAX=255 scanimage -L 2>log" as
root. If you don't get any output from the umax_pp
backend, make sure a line "umax_pp" is included
into your /etc/sane.d/dll.conf. If your scanner
isn't detected, make sure you've defined the right
port address in your umax_pp.conf.
the name of your scanner/vendor
also a worthy information. Please also include the
optical resolution and lamp type of your scanner,
both can be found in the manual of your scanner.
if you have comments about the documentation (what
could be done better), or you think I should know
something, please include it.
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