Re: rs485

["Agustin Figueredo Canosa" <dvs () alu uma es>]

The operating system to do the capturing is WinXP.
The idea is that the same machine that configure the rs485-based network
do the capture if it´s possible.
I'll ask about the hardware and software, now I have only a description of
protocol to do the dissector but I think the hardware to capture is a
serial transceiver
Thanks.
> On Sep 28, 2010, at 12:56 AM, Agustin Figueredo Canosa wrote:
>
> > I´m working with a link layer protocol using rs485 interface. I have
> > created a dissector for my protocol and it works fine. But now I would
> > like (if possible) to capture packets in real time.
> >
> > I think it´s not possible to capture live data from rs485 using
> > wireshark
> > directly but if anyone have worked in it I'll be grateful for any help.
>
> Ultimately, Wireshark's ability to capture from a traffic source is
> dependent on libpcap/WinPcap's ability to capture from it, which is
> dependent on the OS on which you're capturing and/or the hardware used for
> the capturing.  Modern versions of libpcap (for UN*X systems) and WinPcap
> (for Windows) support adding modules to handle various types of capture
> hardware and software (although they're modules compiled into the libpcap
> or WinPcap library, not plug-in modules loaded at run time).
>
> On what operating system or operating systems do you want to do the
> capturing?  What software does it have to support RS-485?
>
> What sort of hardware do you have to connect to the RS-485-based network?
> An RS-485-to-USB converter, as you mention, or some other form of hardware
> (such as a serial transceiver)?
>
> Do you want to capture traffic on an RS-485-based network that's neither
> sent to nor from the machine doing the capturing ("third-party" capture),
> or do you just want to capture traffic sent to or from your machine?
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