First, some background info. My earliest experience with Unix was back in
the early 1980s with System III (a version which had heavy influences from
Version 7 & BSD 4.1). On January 1st this year I installed Red Hat Linux 9
on my new (new to me) home system as the sole O/S. (I don't like
"ScotiforM" software.) At present, this system does not have Internet
access (nor a printer!) and so even using this mailing list is a bit of a
convoluted process.
My system has two USB ports. I've just recently been given a Hewlett
Packard ScanJet 3300C flat-bed scanner which I've attempted to use. The
system acknowledges an USB device is connected when the scanner is powered
up. The command:
sane-find-scanner
passes once I uncommented the bottom two lines in the file
/etc/sane.d/hp.conf, namely
/dev/usb/scanner0
option connect-device
Making tests and reading the log files I see that this scanner is identified
by
VENDOR 0x3f0
DEVICE 0x205
As this device code was not shown in the hp.conf file I was not surprised to
see that
scanimage -L
fails with the message
usb_control/bulk_msg: timeout
scanner.c: write_scanner: NAK received
No scanners were identified (etc, etc)
Basically I assume that the sane backend does not have support for this
scanner built in. Am I correct? Is there anything I can do?
Now the second part of my request. Can anyone please tell me how I identify
the device names for the two USB ports? What I want to do is access them in
the form of
/dev/usb/???
or similar. Assume (for this thought process) I have two black-boxes, one
connected to each of the USB ports. And finally, could someone please tell
me the physical specifications - pin-outs, voltages levels, etc - of an USB
port?
Thanks for reading this far.
Alan.
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