Re: dispatcher functions errors

[Jon Elson <jmelson-at-artsci.wustl.edu>]

garrett beaubien wrote:

> Hello,
>
> I was wondering if anyone on this list had any
> experience writing their own dispatcher functions.  I
> have written them for my hardware, compiled them,
> edited the emc.ini file to include my module, but when
> I run EMC, it gives me an error saying that
> "plat/rtlinux_2_2/mymodule.o does not exist or is not
> executable".
>
> I took a look in the directory, and my module was
> there, and looked about the same size as the other
> modules (stgmod.o for example).  I tried this on two
> occasions.  First I made sure that the stg module
> worked.  I edited the ampfault function so that I can
> run EMC with this module, home any axis, and jog it
> (and see the commanded position increase).  Then I
> copied stg.c to mymot.c, stg.h to mymot.h, and
> extstgmot.c to extmymot.c.  Then the only thing I
> changed in the files themselves were the #include's to
> mymot.h
>
> The second time, I took the extstgmot.c copied it into
> extmymota.c, and stubbed out all functions (ie. return
> 0 for all) except for the functions that return the
> number of DAC's and Encoders.  for those I returned 3.
>
> In both cases, I updated the Makefile so that I could
> compile them (make PLAT=rtlinux_2_0 all).
>
> I was wondering if this might have something to do
> with the ident string that is at the top of the
> dispatcher implementation c files?

One other thing to check is ownership of the file, and the
file protection, to make sure it is executable.

Jon