[sane-devel] Visioneer Onetouch 4400 USB (Visioneer/Primax Primascan Colorado 2600u, Memorex 6142u)

m. allan noah anoah@pfeiffer.edu
Sat, 6 Dec 2003 12:24:05 -0500 (EST)

keith, i dont like snoopypro, i prefer either the original (non-pro) or 
even better, SniffUSB.exe v1.8 from 

the latter is easier to install, and i like the debug log it makes better.

you can cat the output from it into the attached perl script, which cleans 
things up some, though it does not deal with control packets fully...

i usually work on adf scanners, which have alot of sensors and buttons, 
usually, so i test them by doing one thing at a time with a pause between 
each, ie: start sniffer, open lid, wait 15 seconds, close lid, wait, push 
paper sensor, wait, button1, wait, button2, etc. then i add paper to the 
scanner, and press the buttons again, etc.

then you stare at the output for awhile, and try to find patterns.

On Sat, 6 Dec 2003, Keith Watson wrote:

> Ok, so I've grabbed a copy of SnoopyPro and installed it on Windows2000.  I've
> opened the TWAIN interface got the scanner to scan an image.  SnoopyPro has
> captured a load of things called URBs (what's a URB daddy?).
> Presumably I really should approach this methodically and perform a series of
> smaller captures with each one addressing a specific operation. Is there any
> material anywhere which covers this?  Failing that is anyone able to mentor me
> through this? e.g. suggest what operations I need to capture and in what order?
> If someone could tell me what to do, I could then post the output somewhere so
> that others more knowledgeable and able than me can look at them and perhaps
> deduce what's going on.
> Keith

"so don't tell us it can't be done, putting down what you don't know.
money isn't our god, integrity will free our souls" - Max Cavalera