sane-dc240(5)

💖 sane-dc240 — the Kodak DC240 camera backend, bestie edition 💖

okay so this is a page from the SANE Scanner Access Now Easy manual set, and it's all about sane-dc240(5) — the SANE backend for the Kodak DC240 Digital Camera. yes, an actual camera. we love a retro moment. 🎀

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✨ NAME ✨

sane-dc240 — the SANE backend for the Kodak DC240 Digital Camera 🦋

🌸 DESCRIPTION 🌸

The sane-dc240 library implements a SANE (Scanner Access Now Easy) backend that gives you access to the Kodak DC240 camera. that's the whole vibe.

THIS IS EXTREMELY ALPHA CODE! USE AT YOUR OWN RISK!! 😭 like genuinely, no cap, this is alpha-alpha. she's experimental. proceed accordingly. 💀

💅 DEVICE NAMES 💅

The current version of the backend only allows one camera to be connected. one camera, one bestie, that's the rule.

The device name is always "0". that's it. that's the name. iconic of her honestly.

🎀 CONFIGURATION 🎀

So the contents of the dc240.conf specify the serial port and baud rate to use. The baud rate is literally the maximum rate to use while downloading pictures. (The camera is always initialized using 9600 baud, then switches to the higher rate — so it warms up slow and then goes fast, main character energy tbh.) 🌈

On a 450MHz Pentium, our author usually has no problems downloading at 115200 baud, though the camera sometimes has to resend packets due to lost characters. 😭 so real. 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. periodt. 💅

The dumpinquiry line causes some information about the camera to be printed. lowkey a lil gossip session with your camera. 🙈

cmdrespause specifies how many usec (1,000,000ths of a second) to wait between writing the command and reading the result. 125000 seems to be the lowest you can reliably go — that's the author's words, not mine, don't come for me.

breakpause specifies how many usec (1,000,000ths of a second) between sending the "back to default" break and sending commands.

Empty lines and lines starting with a hash mark (#) are ignored. here's a sample configuration file, look at her go:

port=/dev/ttyS0
# this is a comment
baud=115200
dumpinquiry
cmdrespause=125000
breakpause=1000000

🦋 FILES 🦋

• /etc/sane.d/dc240.conf — the backend configuration file (see also the description of SANE_CONFIG_DIR below, bestie, it's coming).
• /usr/lib64/sane/libsane-dc240.a — the static library implementing this backend.
• /usr/lib64/sane/libsane-dc240.so — the shared library implementing this backend (present on systems that support dynamic loading).

👑 ENVIRONMENT 👑

• SANE_CONFIG_DIR — this environment variable specifies the list of directories that may contain the configuration file. On *NIX systems, 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). slay, an ordered search. ⭐
• SANE_DEBUG_DC240 — 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. so 128 = maximum yapping. 🔥

🫶 SEE ALSO 🫶

sane(7) — go read it, iykyk.

💜 AUTHOR 💜

Peter S. Fales ✨

This backend borrows heavily from the sane-dc210(5) backend by Brian J. Murrell, which is based somewhat on the sane-dc25(5) backend by Peter Fales. (yes, same Peter Fales. the lore runs deep.) 🧚

The manpage was largely copied from the sane-dc210(5) manpage. giving credit where credit is due, we love to see it. 🍓

😭 BUGS 😭

The major limitation that the author knows 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. 💀 so yeah, past 9999 pics she gets confused. we're working on it (we're not, but spiritually we are).

More general comments, suggestions, and inquiries about frontends or SANE should go to the SANE Developers mailing list (see http://www.sane-project.org/mailing-lists.html for details). You must be subscribed to the list, otherwise your mail won't be sent to the subscribers. no lurking in the void, you gotta be in the group chat to send to the group chat. 🙈

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okay that's the whole page!! 🎀 this was the sane-dc240(5) page from the SANE manual set, dated 11 Jul 2008 — yes, 2008, she's a vintage icon and we respect her. mwah, go download some pictures at 115200 baud bestie 💅✨🦋🌸💖