My timing is terrible as it is now Friday and I am now away from that PC.
I basically followed the instructions for installation to the best of my
ability, did the loop back test and it was fine and then tried to receive
UDP packs from another PC running a UDP test program (as well as from the
robot).
I ran the simple server example that receives packets and echos them back
down the line. It cuts off the first 8 bytes and the returned packet is
truncated and has none standard ascii chars in at least the first 8 bytes.
My theory was that when one RT net system talked to another it might add an
8-byte header, so when I sent my message it was stripping out those 8 bytes
and interpreting them as the header and then it replied with a similar
header.
I am not an experienced Linux user and I am finding the documentation or
lack of very difficult to deal with. When I can get back on the PC I will
try to answer the other questions.
Graham
On Fri, Jul 29, 2011 at 4:42 PM, Jan Kiszka <jan.kis...@siemens.com> wrote:
> On 2011-07-29 17:26, Graham Stabler wrote:
> > I'm wondering if anyone is following the mailing list these days? There
> does
> > not seem to be a lot of activity. I could really do with some advice on
> > simple RTnet usage.
>
> There are users, just (probably) mostly busy ones.
>
> Regarding your issue: It's hard to provide any advice based on the
> available information. How did you configure RTnet? What NIC driver are
> you using? What version of RTnet? Which RT-extension? And most
> importantly, can you set up a test case that exposes the issue without
> special external hardware, something that sends frames, and those frames
> end up corrupted on the wire?
>
> Jan
>
> --
> Siemens AG, Corporate Technology, CT T DE IT 1
> Corporate Competence Center Embedded Linux
>
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