SANE Scanner Access Now Easy sane-umaxpp(5)
NAME
sane-umaxpp - SANE backend for Umax Astra parallel port
flatbed scanners
DESCRIPTION
The sane-umaxpp 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 610P
Astra 1220P
HP3200C
Astra 1600P
Astra 2000P
Genius ColorPage-Life Pro
This backend handles 75x75, 150x150, 300x300, 600x600 and
600x1200 for 1220P/1600P/2000P dpi scan reslutions,and
75x75, 150x150, 300x300 and 300x600 for 610P. In color and
gray levels, there is a software lineart mode.
The new generation models share a newer version of the 610P
ASIC embedded in an EPAT chip. Only parts such as CD and
ADC change from one to another. They even all reports being
UMAX Astra 1220P via IE1284. There isn't software way to
recognize them properly. Under windows, model is set by the
driver installed, regardless of the hardware.
EP/ECP MODES ONLY
The current version of the backend uses only EP or ECP
mode to communicate with the scanner. PS/2 mode isn't
implemented. The 610P only use SP. It is recommended
that you set your parallel port to EP in BIOS with the
current version of this backend. You can leave it to
ECP or ECP]EP, but in this case you may not use ppdev
but only direct hardware access if you have to use ECP.
ECPEP will only work if you use a 2.4 or 2.6 kernel
with ppdev character device support.
This backend does support parport sharing only if you have a
kernel with ppdev support.
Note that if you don't use the ppdev character device, the
backend needs to run as root. To allow user access to the
scanner run the backend through the network interface (See
saned(8) and sane-net(5)). A more relaxed solution (secu-
rity wise) is to add suid bit to the frontend (See
chmod(1)). The backend drop root priviledges as soon as it
can, right after gaining direct access to IO ports, which
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lessen risks when being root.
DEVICE NAMES
This backend expects device names of the form:
port value
Where value is :
auto autodetect all parallel ports and probe them for
scanner
safe-auto
autodetect all parallel ports and probe them for
scanner, but does not try direct hardware access
/dev/ppi0
uses *BSD ppi device, depending on the number of
available parallel port, you have to use
/dev/ppi1, /dev/ppi2, ...
/dev/parport0
uses linux ppdev device, depending on the number
of available parallel port, you have to use
/dev/parport1, /dev/parport2, ...
0x378
does direct hardware access on the given address.
Usual values are 0x378, 0x278, 0x3BC In this case,
you have to run the scanner as root (*BSD and
linux), or with 'IOPL=yes' on OS/2
NOTE: in all cases, you must have sufficient priviledges to
get access to the chosen device or address. Depending on the
security settings, devices may not be available for all
users. You have to change permissions on the dev/ppi* or
/dev/parport* devices.
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 umaxpp.conf before you use the
backend.
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The contents of the umaxpp.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-offset, green-offset, blue-offset, 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). If the
advanced option "Gain" isn't checked in the frontend, the
backend does automatic gain calibration, and do not use user
provided values.
Options red-offset , green-offset and blue-offset allow you
to adjust the offset of your scanner for the given color.
Values range from 0 (lowest offset) to 15 (highest).
Option astra allows you to change the model of your scanner.
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 610, 1220,
1600 and 2000. It is usefull only when autodetection fails
to detect properly your scanner model. If your scanner work
properly but is reported wrongly, let it be that way. The
only valid case to change the model is when your scanner
produces "black" or "inverted" scans. In this case you can
put the model. Be aware that it will prevent scanner model
autodetection.
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. Decreasing this value will improve the
smoothness of progress bar in the frontend, but will stall
the scan more often.
FILES
/etc/sane.d/umaxpp.conf
The backend configuration file (see also description of
SANECONFIGDIR below).
/usr/lib/sane/libsane-umaxpp.a
The static library implementing this backend.
/usr/lib/sane/libsane-umaxpp.so
The shared library implementing this backend (present
on systems that support dynamic loading).
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ENVIRONMENT
SANECONFIGDIR
This environment variable specifies the list of direc-
tories 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 separator character, then the default direc-
tories are searched after the explicitly specified
directories. For example, setting SANECONFIGDIR to
"/tmp/config:" would result in directories
"tmp/config", ".", and "/etc/sane.d" being searched (in
this order).
SANEDEBUGUMAXP
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
SANEDEBUGUMAXPLOW
This variable sets the debug level for the SANE inter-
face for the Umax ASIC. Note that enabling this will
spam your terminal with some million lines of debug
output.
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(8)
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For latest bug fixes and information see
http:/umax1220p.sourceforge.net/
AUTHOR
St['e]phane VOLTZ
CREDITS
Support for the 610P has been made possible thank to an
hardware donation by William Stuart.
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
run "SANEDEBUGUMAXP=255 scanimage -L 2>log" as
root. If you don't get any output from the umaxpp
backend, make sure a line "umaxpp" is included into
your /etc/sane.d/dll.conf. If your scanner isn't
detected, make sure you've defined the right port
address, or the correct device in your umaxpp.conf.
the name of your scanner/vendor
also a worthy information. Please also include the opt-
ical resolution and lamp type of your scanner, both can
be found in the manual of your scanner.
any further comments
if you have comments about the documentation (what
could be done better), or you think I should know some-
thing, please include it.
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
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ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWsane-backend
Interface Stability Uncommitted
NOTES
Source for SANE is available on http:/opensolaris.org.
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