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

[Stefan Lucke]

On Monday 11 February 2008, Pierre Willenbrock wrote:
> Reinhard Biegel schrieb:
> > Am Monday, 11. February 2008 schrieb Stefan Lucke:

> >> At that moment, I guess you'll see messages like:
> >> 	new high speed USB device using ehci_hcd and address nn
> >> via dmesg.
> > 
> > Hi,
> > Yes, thats right.
> > 
> > Changing the write to reg 0x6b from 0x0c to 0x08 fixes that. 
> > Scanner is producing noisy image now.
> > 
> > Do I see right that the two bits (0x04 and 0x08 of register 0x6b) affect two 
> > pins which are marked as 'reserved' in the datasheet? They are only 
> > documented for GL843.
> 
> Register 0x6b is very different between GL841/2 and GL843. But the
> documentation around the pins controlled with 0x6b is a bit lacking.

So we need to write reserved I/O bits, (0x6b) need to write to undefined
gamma addresses (0x5b/5c - 0x0c00). Thats really magic. Both areas
are defined for GL843 but not for GL841/2.

> 
> Did someone post the bcdDevice value of a LiDE 80? GL841 goes up to
> 3.0.5, as someone said, and GL842 begins with 3.0.6

It is for my scanner:
  idVendor           0x04a9 Canon, Inc.
  idProduct          0x2214
  bcdDevice            3.02
as found on: http://www.sane-project.org/unsupported/canon-lide-80.html



-- 
Stefan Lucke