[sane-devel] LiDE 90

[Guillaume Gastebois]

Hello,

Me again !

I'm trying to find what are GPIO14,13,12 and 11 for.

I find GPIO11=home switch and must be 0.
I thought I found GPIO14 was half CCD but by adding :
/* gpio part. here: for canon lide 90 */
if (dev->model->gpo_type == GPO_CANONLIDE90)
{
r = sanei_genesys_get_address (reg, 0x6c);
if (half_ccd)
r->value |= 0x20;
else
r->value &= ~0x20;
}

in genesys_gl841.c line ~2053 I had image compressed x2 in the left and
second right part black with 0x6c=12 and not with 0x6c=1a. Strange.

I decided to comment out these lines yet for tests.

In genesys_841.c I see conditions with GPO_CANONLIDE35 for gl841_feed
function (lines ~4309 and ~4913). I added GPO_CANONLIDE90 too. What is
this function for ? Is it usefull to add lide 90 ?

tests I made were :
0x1a=00 and 0x6c=02 : bad calibration vertical lines
0x1a=00 and 0x6c=0a : bad calibration vertical lines (motor sometimes
locks at the end with noise).
0x1a=00 and 0x6c=12 : image like before (small calibration problems)
0x1a=00 and 0x6c=1a : image like before (small calibration problems)
0x1a=00 and 0x6c=22 : bad calibration vertical lines
0x1a=00 and 0x6c=2a : bad calibration vertical lines
0x1a=00 and 0x6c=32 : very good quality image but take only the half
left part of the page
0x1a=00 and 0x6c=3a : very good quality image but take only the half
left part of the page

0x1a=24 and 0x6c=02 or 0a or 12 or 1a or 22 or 2a or 32 or 3a : always
black image!

All the results can be found on :
http://ggastebois.free.fr/lide90_snoop/test_00 (for tests with 0x1a=00)
http://ggastebois.free.fr/lide90_snoop/test_24 (for tests with 0x1a=24)

The number in the tar name is the value off 0x6c. I think looking at
0x6c=32 or 3a is very interesting.

Why sane always produces black images with same 0x1a value as windows
driver ????

Regards
Guillaume

ps. : Pierre can you send me a sample entropy processed offset image to
see what I must obtain. Thank you.