Electronics > Projects, Designs, and Technical Stuff
ezSniffer - Hardware USB Packet Sniffer on a Budget
NiHaoMike:
--- Quote from: TimCambridge on June 25, 2019, 09:16:02 am ---Detailed HS debugging needs a full-on HS sniffer, typically these cost around 20 times the price of an ezSniffer.
--- End quote ---
Beaglebone Black can do USB 2.0. Someone just needs to develop a ready to go firmware image just like what was done for its logic analysis capabilities.
TimCambridge:
Here are a couple of technical/project definition things that might interest the forum:
* it was pretty easy to add a Python programming interface - there's a natural split between the GUI and the back end and Python or many other languages can access the back end if it's built as a DLL or SO. But almost nobody has been interested, we have had almost no comments. Just one data point and I still think it's so easy to do that other projects should go this way.
* it was time consuming to make the protocol decoders externally scriptable (via Lua in our case). There's a challenge to implement the functionality and another challenge to keep the overhead down. But like with Python scripting, the volume of comments isn't huge. Next time we would launch before adding the external interface and make it a future upgrade. Follow billg's advice and launch a "minimum viable product."
TimCambridge:
--- Quote from: ebclr on June 26, 2019, 06:55:35 am ---... your 1 GHz logic analyzer is also cool
--- End quote ---
Here's a warning: This design used a Lattice XO2 part - generate lots of clock phases with the spiffy PLL and manually route a multi-phase sampler. If you're thinking of doing really fast stuff in an XO2 you may need to fall back to manual routing and dear Lattice have removed some of the manual routing functionality from recent iterations of Diamond software. So make sure you have an installation of (old) Diamond 2.x. A xilinx solution may be an easier task.
mirage3:
hi TimCambridge
I encounter some problem with ezsniffer. I manage to get the connection in ezsniffer software but unable to sniff the data.
Please shed some light.
:)
TimCambridge:
--- Quote from: mirage3 on October 31, 2019, 08:42:17 am ---I encounter some problem with ezsniffer. I manage to get the connection in ezsniffer software but unable to sniff the data. Please shed some light. :)
--- End quote ---
Make sure that the USB cables are completely plugged in to the sockets. Contact support at bugblat if the problem persists.
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