Why do I get "Error using tlc_c" when using a Matlab Function in Simulink?

Hello,

I'm currently trying to use simulink and RT_Mag to get 2 devices (Gumstix Overo) to discuss over RS232.

The messages I'm trying to send/receive are made of multiple data with a string of character "data1;data2...;dataN\n\r" in char8.

Without any Matlab functions, everything works great. But when I try to use some to recover each data individually and use them as real numbers, or to put some numbers in a new string to send it back, I get several errors. The two functions work great on Matlab (I tested them before implementing them in Simulink), but when I launch my Simulink program I get these errors:

"

 Code generation assertion 'typeReplaced.getMatrixSize() == typeReplacing.getMatrixSize()' failed in '.\rtwcg_utils\rtwcg_dataconnector.cpp:510'

 [  0] 0x204ecffb C:\Program Files\MATLAB\R2011b\bin\win32\rtwcg.dll+00315387 ( RTWCG::DataConnector::replace+000283 )

 [  1] 0x204ee8c0 C:\Program Files\MATLAB\R2011b\bin\win32\rtwcg.dll+00321728 ( RTWCG::RTWCGConnectBlockData+000512 )

 [  2] 0x204eeb83 C:\Program Files\MATLAB\R2011b\bin\win32\rtwcg.dll+00322435 ( RTWCG::RTWCGConnectBlockData+000067 )

 [  3] 0x2054efa8 C:\Program Files\MATLAB\R2011b\bin\win32\rtwcg.dll+00716712 ( RTWCG::RTWFcnConst::OptimizeAndEmitCode+001816 )

 [  4] 0x2051085d C:\Program Files\MATLAB\R2011b\bin\win32\rtwcg.dll+00460893 ( RTWCG::RTWCGModule::OptimizeAndEmitCode+000125 )

 [  5] 0x1e7f9ecd C:\Program Files\MATLAB\R2011b\bin\win32\libmwsimulink.dll+08298189 ( BlockSetCheckVarDimsInputEmpty+066381 )

 [  6] 0x1e7f6f97 C:\Program Files\MATLAB\R2011b\bin\win32\libmwsimulink.dll+08286103 ( BlockSetCheckVarDimsInputEmpty+054295 )

 [  7] 0x1e84aa02 C:\Program Files\MATLAB\R2011b\bin\win32\libmwsimulink.dll+08628738 ( sleGetRTWBlockForSLBlock+262210 )

 [  8] 0x1e84af9f C:\Program Files\MATLAB\R2011b\bin\win32\libmwsimulink.dll+08630175 ( sleGetRTWBlockForSLBlock+263647 )

 [  9] 0x1e33b9c5 C:\Program Files\MATLAB\R2011b\bin\win32\libmwsimulink.dll+03324357 ( ArrayToSLObject+481685 )

 [ 10] 0x7f63ea8c C:\Program Files\MATLAB\R2011b\bin\win32\m_dispatcher.dll+00060044 ( mdLogging::log_function_exit+000108 )

 [ 11] 0x7f63e561 C:\Program Files\MATLAB\R2011b\bin\win32\m_dispatcher.dll+00058721 ( Mfunction_handle::dispatch+000401 )

 [ 12] 0x7b99ac96 C:\Program Files\MATLAB\R2011b\bin\win32\m_interpreter.dll+00502934 ( inDestroyWS+247110 )

 [ 13] 0x7b997c71 C:\Program Files\MATLAB\R2011b\bin\win32\m_interpreter.dll+00490609 ( inDestroyWS+234785 )

 [ 14] 0x7b9a6807 C:\Program Files\MATLAB\R2011b\bin\win32\m_interpreter.dll+00550919 ( inDestroyWS+295095 )

 [ 15] 0x7b9a6922 C:\Program Files\MATLAB\R2011b\bin\win32\m_interpreter.dll+00551202 ( inDestroyWS+295378 )

 ### Build procedure for model: 'COM_Rs232_test' aborted due to an error.

Error using tlc_c (line 174)

Errors occurred during parsing of MATLAB function 'GUMSTIX/MATLAB Function3'(#61)

Error in RTW.makertw/make_rtw (line 281)

buildResult = tlc_c(h,...

Error in make_rtw (line 22)

buildResult = h.make_rtw(varargin{:});

Error in GenereFullCOM (line 99)

make_rtw; % generation of ert_code from the selected model

Error in GenereCOM (line 66)

GenereFullCOM(['COM_' ComModelName], MinSampleTime, Gumstix); 
% generates the sources files to needed to build the application

Error in init_Rs232_test (line 24)

GenereCOM(ComModelName, ComMinSampleTime);

"

My functions work as follow:

"

 function ordres   = PWM2Orders(PWM_moteur1,sens1,PWM_moteur2,sens2,PWM_moteur3,sens3,PWM_moteur4,sens4,PWM_servo1,PWM_servo2,PWM_servo3,PWM_servo4,PWM_servo5,PWM_servo6)

 %PWMtoOrders prepares the orders to send via the RS232 thread

 %   Apparently Simulink MatlabFunctions cannot have char8 data as output so

 %   it is necessary to cast...

    coder.extrinsic('sprintf');

    ordres = uint8(zeros(1,89));

    strordres = sprintf('%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d\n\r',PWM_moteur1,sens1,PWM_moteur2,sens2,PWM_moteur3,sens3,PWM_moteur4,sens4,PWM_servo1,PWM_servo2,PWM_servo3,PWM_servo4,PWM_servo5,PWM_servo6);

    ordres = cast(strordres,'uint8'); 

 end

"

I already tried the 3 compilers proposed to me by mex -setup.

Finnally I work with MATLAB R2011b.

Thanks in advance!

Matthieu

EDIT:

The errors send me to this:

Error using tlc_c (line 174) :

    [sfcnsCell, buildInfo, modelrefInfo] = ...
        rtwgen(modelName, ...
               'PostponeTerm', 'off', ...
               'WriteDataRefs', 'on', ...
               'CaseSensitivity','on',...
               'Language', 'C', ...
               'OutputDirectory',buildDir, ...
               'MdlRefBuildArgs',iMdlRefBuildArgs);

Error in RTW.makertw/make_rtw (line 281) :

         buildResult = tlc_c(h,...
                              h.ModelName, ...
                              h.RTWRoot, ...
                              h.SystemTargetFilename, ...
                              dispOpts, ...
                              h.BuildDirectory, ...
                              gensettings.CodeFormat,...
                              h.MdlRefBuildArgs, ...
                              anchorDir, checksum);

Error in make_rtw (line 22):

         buildResult = h.make_rtw(varargin{:});

And the others just call the precedent one.

[Ryan Livingston]

There should be some more error information available aside from "Errors occurred during parsing of MATLAB function...". You should be able to see the location in your MATLAB code where the error is being reported. Can you post those errors?

[Matthieu Muschinowski]

Post edited with more info on the errors. Thanks for your time!

[Ryan Livingston]

Thanks. The fact that the error "Error occurred during parsing..." is present means that an error was detecting when inspecting your MATLAB code. We need the error from processing the MATLAB code to determine what is wrong. Can you just paste everything that shows up?

There should also be a blue link that takes you to a line in your MATLAB code. There should also be further messages about what the software thinks is wrong with your MATLAB code. This:

http://www.mathworks.com/help/simulink/ug/creating-an-example-model-that-uses-a-matlab-function-block.html#brux364

shows how to view the errors in more detail.

[Matthieu Muschinowski]

Edited with everything that shows up.

The links for the line in the code are here too ("send me to ...")

I don't get any blue links but that's maybe because my version is a bit dated...

[Ryan Livingston]

Ahh, thanks! Different kind of error from what I was initially expecting. So that's why you don't have any links.

Just a guess, but looking at the code in the MATLAB Function Block, it seems that the output of sprintf is not preallocated. When using an extrinsic function one must preallocate the output to tell Simulink about its size, type and complexness:

coder.extrinsic('foo');
y = zeros(1,2);
y = foo(x);

In your case, you could try something like:

strordres = blanks(1,89); %adjust size as necessary
strordres = sprintf(...);
ordres = cast(strordres, 'uint8');

http://www.mathworks.com/help/simulink/ug/calling-matlab-functions.html#bq1h2z9-46

describes this process in more detail.

[Ryan Livingston]

If my previous suggestion doesn't help, getting in touch with MathWorks Technical Support is typically the best route for this type of issue:

http://www.mathworks.com/support/contact_us/

[Matthieu Muschinowski]

I updated my code with your suggestion but the errors stay the same... I'll contact the technical support then! Thanks anyway for the time and advices!