sane-dc240 - SANE backend for Kodak DC240 Digital Camera
The sane-dc240 library implements a SANE (Scanner Access Now Easy)
backend that provides access to the Kodak DC240 camera. THIS IS
EXTREMELY ALPHA CODE! USE AT YOUR OWN RISK!!
The current version of the backend only allows one camera to be connected.
The device name is always "0".
The contents of the dc240.conf specify the serial port and baud rate to
use. The baud rate specifies the maximum rate to use while downloading
pictures. (The camera is always initialized using 9600 baud, then
switches to the higher rate). On a 450MHz Pentium, I usually have no
problems downloading at 115200 baud, though the camera sometimes has to
resend packets due to lost characters. Results are better when the
"interrupt-unmask flag" is set in the IDE driver (hdparm -u1). Supported
baud rates are: 9600, 19200, 38400, 57600, and 115200.
The dumpinquiry line causes some information about the camera to be
printed.
cmdrespause specifies how many usec (1,000,000ths of a) between writing
the command and reading the result should be used. 125000 seems to be
the lowest I could go reliably.
breakpause is the time in 1,000,000ths of a usec between sending the
"back to default" break sending commands.
Empty lines and lines starting with a hash mark (#) are ignored. A
sample configuration file is shown below:
port=/dev/ttyS0
# this is a comment
baud=115200
dumpinquiry
cmdrespause=125000
breakpause=1000000
/etc/sane.d/dc240.conf
The backend configuration file (see also description of
SANE_CONFIG_DIR below).
/usr/lib/sane/libsane-dc240.a
The static library implementing this backend.
/usr/lib/sane/libsane-dc240.so
The shared library implementing this backend (present on systems
that support dynamic loading).
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 separator
character, then the default directories are searched after
the explicitly specified directories. 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_DC240 [Toc] [Back]
If the library was compiled with debugging support enabled, this
environment variable controls the debug level for this backend.
A value of 128 requests maximally copious debug output; smaller
levels reduce verbosity.
sane(7)
Peter S. Fales
This backend borrows heavily from the dc210 backend by Brian J. Murrell
which is based somewhat on the dc25 backend by Peter Fales.
The manpage was largeley copied from the dc210 manpage.
The major limitation that I know of is that the backend assumes the
directory in the camera is 100dc240. Once the camera has taken more
than 9999 pictures, the directory will increment to 101dc240. Not only
should we check for the additional directory, but pictures may actually
be found in multiple directories.
More general comments, suggestions, and inquiries about frontends or
SANE should go to the SANE Developers mailing list (see
http://www.mostang.com/sane/mail.html for details). You must be subscribed
to the list, otherwise your mail won't be sent to the subscribers.
23 March 2001 sane-dc240(5)
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