Hi Stef,
   I know how to program in C, but I know nothing about how a scanner works,
in any case, I have an hp2400c which has been doing a great job as a brick,
if you would be so kind so as to send me those scripts I may give it a try to 
write a backend for that scanner.
thanks,

carlos.

On 07/11/05 22:05, St?phane VOLTZ wrote:
> Le Lundi 7 Novembre 2005 18:49, Kristoffer a ?crit?:
> > On Mon, 07 Nov 2005 17:49:06 +0100, Kristoffer <[email protected]> wrote:
> > > I want to get it working! And I see that the genesys author in
> > > genesys.conf have it commented out and to be uncommented "only for
> > > development purposes".
> > >
> > > Can the author comment on the state of 2400? I would be delighted to
> > > help, Maybe i could also make the support in genesys backend complete
> > > for this driver, if he/you can't, but since i've never made a c program
> > > before(or anything other than very basic bash/dos batch scripts and MMF)
> > > i could use some help.
> > >
> > > what i'm thinking is 1. grab the source 2. change the code to what it
> > > looks like windows driver is doing(by snooping) 3. then i'd need help on
> > > howto compile it and test it fast to see if it is functioning correctly.
> > > 4.maybe you could implement it in your driver or tell me howto ;) hey
> > > it's fun!
> > >
>       If you wish, I can provide you with my awk scripts that turn usb logs 
> into 
> low/mid level genesys functions. Which ease the developpement. 
>       I'd recommend to play with sane 1.016 sources, since the experimental 
> version 
> is now not working any more for hp2300/md6471 due to some exposure_time 
> improvement. When this will be resolved, you may bring back you change into 
> it.
>       The code path to modifiy is the one taken by th hp2300 (look fo HP2300) 
> in 
> code. You'll have to figure how the  right register related constants to put 
> into genesys_devices.c .
> 
> Regards,
>       Stef
> 
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From [email protected]  Tue Nov 15 01:41:30 2005
From: [email protected] (Till Kamppeter)
Date: Tue Nov 15 02:06:15 2005
Subject: [sane-devel] 2 new paperweights: HP ScanJet 3800 and 4890
Message-ID: <[email protected]>

Oi,

here at Mandriva we got two new scanners from HP for testing/hardware 
certification: ScanJet 3800 and ScanJet 4890. Both do not work with 
current SANE. I have run the following commands on them:

lsusb
lsusb -vvv
sane-find-scanner -v -v

On the SANE has found a GL841 chipset and so I tried to run it with the 
"genesys" backend. I added "usb 0x03f0 0x1b05" to genesys.con and ran

SANE_DEBUG_GENESYS=255 scanimage -L

but also without success.

The output of all commands you find here:

http://www.linuxprinting.org/till/tmp/hpscanjet3800.txt
http://www.linuxprinting.org/till/tmp/hpscanjet4890.txt

I wanted to add the 4890 (the 3800 is already there) to the list of 
unsupported scanners via

http://www.sane-project.org/contrib.html

but the data was not accepted. I got an error message that in one of the 
fields invalid data was entered. Therefore I post the info here on the list.

    Till

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