rtems with matlab autocode problems
João Rasta
freakforever at gmail.com
Wed Jun 16 18:01:48 UTC 2010
It is not a task, just a simple function call. I passed this call to the
first thing in the void POSIX_Init() and the same happens. No matter what i
pass to printf or puts it allways writes the same if this function is
implemented on the autocode *.c files..
Best,
JM
On Wed, Jun 16, 2010 at 6:31 PM, Jiri Gaisler <jiri at gaisler.com> wrote:
>
> Each task is allocated a certain amount of stack space - how much
> have you allocated to your auto-code one? You might try the RTEMS
> stack checker to detect a stack overflow ...
>
> Jiri.
>
> João Rasta wrote:
> > How can i be sure?
> >
> > The fact is that if i read the contents of all the memory space with
> > grmon, they are not zero.. And i have "washed" prior to load the
> > application.
> >
> >
> > Best,
> > JM
> >
> > On Wed, Jun 16, 2010 at 6:11 PM, Jiri Gaisler <jiri at gaisler.com
> > <mailto:jiri at gaisler.com>> wrote:
> >
> >
> >
> > João Rasta wrote:
> > > Just an update:
> > >
> > > If i do fflush(stdout) inside the test function, the application
> > > crashes. Also, no matter what i put in printf, it allways prints
> the
> > > same characters, but it detects the \n correctly.. I don't see if
> this
> > > can be related to the compiler..
> >
> > Sounds to me like you have blown the stack or run out of memory ...
> >
> > Jiri.
> >
> > >
> > >
> > > Best,
> > > JM
> > >
> > > On Wed, Jun 16, 2010 at 4:56 PM, Joel Sherrill
> > > <joel.sherrill at oarcorp.com <mailto:joel.sherrill at oarcorp.com>
> > <mailto:joel.sherrill at oarcorp.com
> > <mailto:joel.sherrill at oarcorp.com>>> wrote:
> > >
> > > On 06/16/2010 10:52 AM, João Rasta wrote:
> > >
> > > Hi,
> > >
> > > No, autocode requires the real-time workbench only, it is
> > quite
> > > straightforward to generate the code.
> > >
> > > I didn't fully understood your question. Anyway, i have
> > tried to
> > > compile the application with gcc and runs fine on linux so
> it
> > > should run on rtems with the apropriate modifications.
> > However,
> > > when i printf("test\n") within the library finction, it
> > returns
> > > strange characters, which doesn't happen in the function
> that
> > > calls the library function..
> > >
> > > Is it including stdio.h? I have seen some targets where if you
> > > don't the variable
> > > arguments stuff gets confused.
> > >
> > > Is the generated code warning free?
> > >
> > >
> > > I suspect of a compilation flag/option i may be missing on
> the
> > > library. Do you have any idea?
> > >
> > > As long as it is compiled the same as the rest of the app, it
> > should
> > > be ok.
> > >
> > > Also, i don't need any rtems primitives/configurations on
> the
> > > library functions right? I'm assuimng It is enough to have
> the
> > > rtems configuration on the "main" file.
> > >
> > > Right.
> > >
> > > Can you print from other tasks?
> > >
> > > --joel
> > >
> > >
> > > Best,
> > > JM
> > >
> > >
> > >
> > >
> > > On Wed, Jun 16, 2010 at 4:42 PM, Joel Sherrill
> > > <joel.sherrill at oarcorp.com
> > <mailto:joel.sherrill at oarcorp.com> <mailto:joel.sherrill at oarcorp.com
> > <mailto:joel.sherrill at oarcorp.com>>
> > > <mailto:joel.sherrill at oarcorp.com
> > <mailto:joel.sherrill at oarcorp.com>
> > > <mailto:joel.sherrill at oarcorp.com
> > <mailto:joel.sherrill at oarcorp.com>>>> wrote:
> > >
> > > On 06/16/2010 10:38 AM, João Rasta wrote:
> > >
> > > Hi,
> > >
> > > I'm having trouble running an rtems application
> > that uses
> > > code
> > > generated from matlab using autocode. It all goes
> well
> > > until a
> > > function of this library is called: printfs return
> > awkward
> > > characters and then the application crashes.
> > >
> > > I have seen references to this before. Is this hard to
> > do? Are
> > > there instructions?
> > > Standard glue code, etc.
> > >
> > > 1) Is there any obvious reason to why printfs of
> > the autocode
> > > generated functions are not working properly? They
> are
> > > compiled with sparc-rtems-gcc, as the main code.
> > >
> > > 2) Are there any special flags needed to be passed
> > to the
> > > compiler in order to link other libraries? Or some
> > rtems
> > > configuration..
> > >
> > > Is there any chance it is printing floating point
> > numbers from a
> > > non-FP task?
> > >
> > >
> > > Best,
> > > JM
> > >
> > >
> > >
> > > -- Joel Sherrill, Ph.D. Director of
> > Research&
> > > Development
> > > joel.sherrill at OARcorp.com On-Line Applications
> > Research
> > > Ask me about RTEMS: a free RTOS Huntsville AL 35805
> > > Support Available (256) 722-9985
> > >
> > >
> > >
> > >
> > >
> > > --
> > > Joel Sherrill, Ph.D. Director of Research&
> > Development
> > > joel.sherrill at OARcorp.com On-Line Applications Research
> > > Ask me about RTEMS: a free RTOS Huntsville AL 35805
> > > Support Available (256) 722-9985
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
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> >
> >
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