[sane-devel] Plustek ST24

[Tymoteusz.Drozd]

Le samedi 25 novembre 2006 03:02, Tymoteusz.Drozd a écrit :
>> hi all
>> recently i've discover that in backend/gensys_devices.c is placed sort
>> of values for ST24.
>> iv done small change in backend/gensys_devices.c:728 from
>> COLOR_ORDER_BGR to COLOR_ORDER_RGB  and in same file at line 726 value
>> 0,8,16 to 0,18,30.
>> that gives correct colors on my plustek st 24 and good correction of ccd
>> line-distance. Sadly only for resolution
>> 600dpi which has wrong number of engine steps what can leads to damange
>> of hardware. For simple workaround i limited y size  of scan area to 1/4
>> of nominal size but its givs 600dpi x150dpi :/.
>> If sobody have any ideas how can i correct number of steps for
>> resolutions larger then  150 dpi plz msg me.
>> Also i have fears that corect number of steps dosnt resolve problem with
>> ccd line distance in resolutions difirent then 600 dpi(for 150 dpi those
>> values are difirent 2,18,32 perhaps).
>> Any ideas are welcome  :) 
>>
>> ps. sorry for my bad anglish  ;)  its 03:00 am and anglish isnt my native
>> lang :>


>Hello,

>the only way I know to find steps values and other >settings is to record USB 
>activity under windows. Then study it to understand >what's going on. I use 
>usbsniff and a few custom scripts to turn raw logs in >'higher level' format 
>with genesys registers values and slope tables decoded.
*>I can send them to you if you wish, or I can try them on >a ST24 sniffed log *
>to see if they need to be  adapted.

>Regards,
>	Stef

Hi! Sure! I would be glad if i could help