Hi Miklos,
About 2 years ago I created a plugin to capture CAN packets in windows
from a device called AnaGate CAN. This AnaGate CAN unit uses a tcp/ip
connection to communicate with another computer and of course its own
protocol. You can probably find some emails from me about this topic
here in the mailing list.
It also took a fairly long time to find out how the extcap plugins
work (no descent/commented examples present) and rudimentary error
handling is missing in the wireshark extcap interface towards the
wireshark framework. I still need to address that in the mailing list.
It was a fairly long time ago so it could have changed in the meanwhile.
This extcap plugin I made was written with a lot of comments and uses
(as far as I know) the best practices how to use the interface, the
purpose was to give it back to the community as a well documented
example for other starters so they don't spoil there precious time.
This plugin also has a user interface where you can configure
parameters, so this can be a good starting point for you.
A had to reverse engineer the right calls to use, because none of the
existing plugins do things a similar way (different ordering, missing
things in some existing extcap plugins etc.) and it was totally
unclear to me which calls are best to be used. Also how to integrate
the sources into the build system were not (completely) documented.
The plugin does work, but error handling is missing because of lacking
support in the wireshark framework and if something goes wrong you
need to kill the sub process or wait for a timeout. I cannot fix that
in the plugin itself. Another thing I need to check/implement if it
can be made more efficient by using poll()/select() in the loop code.
Also I need to test in under Linux, the code is aware of it but never
tested.
I need to dig-up the code and port it to the latest version, the
previous version I used was wireshark 2.9.1.
The PCAN-USB does it the a serial device class on USB or some
proprietary protocol?
regards,
Henri
Hello Henri,
Thank you very much for your anwer, I would deeply appericiate if you
could share me that code (in any shape) with me.
The PCAN-USB does it the a serial device class on USB or some
proprietary protocol?
At USB level it uses a proprietary protocol, however PEAK supply a DLL
for the Windows platform which operates at the CAN network level.
--
Best regards,
Miklos Marton
