[etherlab-users] EtherLab with Omron Accurax PREOP-> OP fail

[Gavin Lambert]

On 11 May 2015 18:32, quoth Fredriek Vanneste:
> > > [17675.764159] EtherCAT 0: Starting EtherCAT-OP thread.
> > > [17675.765211] estimation task[16822]: segfault at 10 ip
> > > 00007f3254f8b537
> > sp
> > > 00007f3255378c20 error 4 in
> > > libethercat_rtdm.so.1.0.0[7f3254f87000+8000]
> > > [17675.870158] EtherCAT WARNING: Datagram ffff8801248f2688
> > > (master-fsm)
> > was
> > > SKIPPED 1 time.
> > > [17675.901068] Xenomai: RTDM: closing file descriptor 0.
> > > [17675.901075] EtherCAT 0: Releasing master...
> > > [17675.901088] EtherCAT 0: Master thread exited.
> > > [17675.901097] EtherCAT 0: Starting EtherCAT-IDLE thread.
> > > [17675.901146] EtherCAT 0: Released.
> > > [17675.901160] Xenomai: native: cleaning up mutex "mutex" (ret=0).
> > > [17676.874188] EtherCAT WARNING: Datagram ffff8801248f2688
> > > (master-fsm)
> > was
> > > SKIPPED 1 time.
> > >
> > > Any ideas?
> >
> > Most likely you are passing incorrect parameters, or calling things in
> the
> > wrong order.  It's hard to say for sure exactly what without seeing
> > your code.
> >
> 
> I have attached a file with the code I used in this example.
> Thank you in advance.

You've never actually assigned anything to sc_motor, so it's still NULL.
Hence the segfault.

You need to assign the local sc from main to it so that the other tasks can
see it.