On Jan 22, 2013, at 10:44 PM, Glen Slick <glen.slick at gmail.com> wrote:
On Jan 22, 2013 7:34 PM, "Al Kossow" <aek
at bitsavers.org> wrote:
http://vusb-analyzer.sourceforge.net/
Looks pretty cool for analyzing USB traffic.
I have always used a hardware analyzer such as a LeCroy USBTracer whenever
I have needed to look at USB traffic. For some things you need to see what
is actually happening on the bus.
This software tool might be interesting for looking at some things at a
higher level.
Software like that works fine as long as all you need to see is
the stream of bytes and the sequence of transactions. For all
of the reverse engineering stuff I've done on USB protocols,
that's been quite enough. This also looks a little nicer than
the $80 commercial stuff I was using in 2003.
If you need to analyze things like signal quality and raw bit
timing, then yeah, I guess you need something external. Most
of the software ones can see everything the OS sees coming
from the raw USB host port driver, though. That does
mean
that if you're debugging a device that's having problems, say,
in the enumeration phase, this won't be of much use.
- Dave