[sane-devel] Canon LiDE 80 (2nd try)

[Stefan Lucke]

On Wednesday 06 February 2008, Pierre Willenbrock wrote:
> Hi Stefan,
> 
> (more text inline)
> 
> Stefan Lucke schrieb:
> > On Tuesday 05 February 2008, Stefan Lucke wrote:
> >> Hi,
> >>
> >> I've seen there is some progress on lide 90 and I want to step in and
> >> like to ask if there could be done something for my LiDE 80 too.
> >> I cloned the canon_lide_60_model entry
> >>
> >> -- scanimage with debug messages : --
> >> [sanei_debug] Setting debug level of genesys to 255.
> >> [genesys] SANE Genesys backend version 1.0 build 9 from sane-backends 1.0.18-cvs
> >> [genesys] sane_init: authorize != null
> >> [genesys] sane_init: little endian machine
> >> [genesys] sane_init: reading config file `genesys.conf'
> >> [genesys] sane_init: config file line 1: trying to attach `usb 0x04a9 0x2214'
> > ..
> >> [genesys_gl841] gl841_bulk_write_register (elems = 104)
> >> [genesys_gl841] reg[0x01] = 0xa0
> >> [genesys_gl841] reg[0x02] = 0x38
> >> [genesys_gl841] reg[0x03] = 0x5f
> >> [genesys_gl841] reg[0x04] = 0x10
> >> [genesys_gl841] reg[0x05] = 0x40
> >> [genesys_gl841] reg[0x06] = 0x18
> >>
> >> -- I modified this, debug message is written before ..bulk_write..() . --
> >>
> >> [genesys_gl841] gl841_bulk_write_register: failed while writing command: Invalid argument
> >> scanimage: open of device genesys:libusb:001:017 failed: Invalid argument
> >> [genesys] sane_exit: start
> >> [genesys] sane_exit: exit
> > 
> > Some further info:
> > I placed some win98 logfiles at http://lucke.in-berlin.de/lide-80/ .
> > 
> > During my search in the list history, I found a test program in this mail:
> > http://lists.alioth.debian.org/pipermail/sane-devel/2006-October/017930.html
> 
> I must admit, i totally forgot about that.. lectures where starting at
> that time at my university.
> 
> > 
> > Using the following stripped down version of usbsnoop-300dpi_color.c,
> > helped to get rid of the sudden disconnect from below.
> > -- snip --
> > set_write_register(0x6b, 0x0c);
> > set_write_register(0x06, 0x10);
> 
> first, try if either of the following is enough to get past writing
> register 0x06:
> set_write_register(0x6b, 0x08);
> set_write_register(0x6b, 0x04);
> 
> put that write to 0x6b into gl841_init, before the /* Write initial
> registers */, and make sure the other places where 0x6b is written
> preserve the needed bits. That may get scanimage to o further with a
> freshly plugged in scanner.
> 

A: set_write_register(0x6b, 0x08); with and without preserving reg_0x6b:
    There is a small audible motor sound, but no movement.
    Windows driver does a small forward , backward movement of scan head.

[genesys] sanei_genesys_write_register (0x0e, 0x00) completed
[genesys] sanei_genesys_write_register (0x6b, 0x08) completed
[genesys_gl841] gl841_bulk_write_register (size = 208)
[genesys_gl841] reg[0x01] = 0xa0
[genesys_gl841] reg[0x02] = 0x38
[genesys_gl841] reg[0x03] = 0x5f
[genesys_gl841] reg[0x04] = 0x10
[genesys_gl841] reg[0x05] = 0x40
[genesys_gl841] reg[0x06] = 0x18
[genesys_gl841] reg[0x07] = 0x00
[genesys_gl841] reg[0x08] = 0x00
..
[genesys_gl841] reg[0x6a] = 0x00
[genesys_gl841] reg[0x6c] = 0x00
..
[genesys] sanei_genesys_write_register (0x0f, 0x01) completed
[genesys] sanei_genesys_read_register (0x41, 0xd1) completed
[genesys] sanei_genesys_read_register (0x41, 0xd1) completed

B: set_write_register(0x6b, 0x04); 
  - one time with preserving 0x6b -> as A:
  - one time  _bulk_write_ up to reg[0x06]
  - this time:
[genesys] sanei_genesys_write_register (0x6b, 0x04) completed
[genesys_gl841] gl841_bulk_write_register (size = 208)
..
[genesys_gl841] reg[0x06] = 0x18
[genesys_gl841] reg[0x07] = 0x00
[genesys_gl841] gl841_bulk_write_register: failed while writing command: Invalid argument


I'm wondering of the effects of playing with bit 2 and 3 of register 0x6b.
According to my spec of gl841 vers. 1.7 p 42,43 bit 0 and 1 and for GPO 17 & 18,
bit 2 & 3 are reserved ;-) .

-- 
Stefan Lucke