This is what I would do.
1. Install "lsusb". It behaves much like lspci so you can what devices are on your system.
When you do a "lsusb" it'll list what devices are hanging off of each USB bus. Do a before and after so you can see the major/minor numbers.
2. When you know the devices major and minor number you can write a program using libusb that'll look for the device, open the device if it exists, take posession of it and then read data to and from it, hopefully.
http://libusb.sourceforge.net/doc/examples-code.html
Looking at that example, I don't think it would be too hard to whip up a program to open the device and then loop until there's input and then dump it on the screen.
Thanks,
Tim.
On 3/31/07, Keith Wright <kwright@keithdiane.us> wrote:
> From: Jamie Guinan <guinan@bluebutton.com>
> >
> > I tried your "od -x" trick on each of these to no avail. I
> > pointed the barcode scanner at some arbitrary barcodes, and it
> > beeped and turned off the red light, but nothing appeared on my
> > screen as a result of the "od -x".
> >
> > Are there other possibilities to consider?
>
> At this point I'd start putting printk's and turning on DEBUGs in
> the kernel source. For starters,
If you get to the point of modifying the kernel source,
can you be far from wanting an oscilloscope on the pins?
-- Keith
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