On Tue, Mar 11, 2014 at 10:16:55AM +0000, David Laight wrote: > From: Felipe Balbi > > On Mon, Mar 10, 2014 at 02:15:36PM -0600, David Mosberger wrote: > > > I was thinking of the Salea Logic <http://www.saleae.com/logic> ($150). > > > Are you aware of any limitations for this one that would get in the way? > > > > for full-speed USB it should work, I guess. Never tried though. Can it > > handle differential signalling ? > > That looks like a simple logic analyser. > Even if it can trace the usb signals, it is unlikely to be useful > for looking at the USB data - in particular it probably can't trigger > on anything inside the packets. > > We've one of these http://www.mqp.com/usb500.htm but I can't recommend > it since I can't manage to get it to trigger sensibly on anything. > Being able to centre the trace on an error event would be nice! > Possibly I just need to RTFM :-) try totalphase with advanged triggering option, it's the best susb sniffer I've ever used (I've had both USB2 and USB3 versions). my 2 cents -- balbi
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