On 02/06/2014 11:58 AM, Leopold Palomo-Avellaneda wrote:
Hi all,
we are trying to develop an application using xddp protocol. We use as base,
the xddp-label exaample that compiles and run perfectly in our system
(Xenomai-2.6.3 with Linux 3.8.13).
Our app is different from the xddp example because we have encapsulated the
realtime thread in a task, that it's in a library. We can run the task,called
from another part, and it rus.
Our task create two sockets, one to receive from the NRT and another to send.
Yes, I know that we could do it in just one socket, but by design we must do
it in the way.
Our main problem is when the RT task try to open the socket, the ipc
device isn't created. The error that appears is:"socket: Address family not
supported by protocol". I attach the real-time task code below.
The xddp works, because the examples works. We have several /dev/rtpX and when
we run the example the /proc/xenomai/registry/rtipc/xddp/xddp-label is
created.
Someone could give us some idea about what are we doing wrong?
Your application is likely not wrapping POSIX symbols properly, calling
regular socket() instead of the Xenomai implementation. Check
examples/rtdm/profiles/ipc/Makefile for LDLIBS. You must have --wrap or
-Wl,@/some/path/posix.wrappers appearing in your link flags, for the
wrapping to take place properly.
--
Philippe.
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