[sane-devel] Backend for plustek Opticbook 3600

[Chris Berry]

Ok I have set the values for the 0x6b and im still getting a completely 
black scan but the lamp is being turned off at the start of a scan.

When the scanner is plugged in the light is ON and when i start a scan 
the light is immediately turned off. The init reg is definitely sending 
the correct data to the scanner so I am assuming another part of the 
code is turning the lamp off.

I took a USB sniff of the lamp being turned on and off repeatedly which 
I will add to the project site 
(http://sites.google.com/site/bez625/home) and I am certain all that the 
lamp needs is to set register 0x03 to the value of 0x5f or 0xdf 
(difference here is lampdog on and off). I have tried various other 
settings including setting the lamp power to off and to no avail. Please 
bear in mind that I have only been changing the setting in the reg_init 
and no where else.

I cant see how I can test anything else is working until the lamp is on 
and why it wont turn on baffles me.

Thanks in advance

Chris

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