rtems with matlab autocode problems

[João Rasta]

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..


Best,
JM

On Wed, Jun 16, 2010 at 4:56 PM, Joel Sherrill <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>> 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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