Simulink Coder: How to specify custom C files from script when generating C code?

Question

I have a script that does some post processing of the initial code generated by Simulink coder. It creates an additional.c file that I wish to add into the build process. I want to add the file into the build process from a script, so I am following the docs here.

So my script looks like:

slbuild(gcs);
% generate additional.c file using files created by slbuild()
% ...
% now attempt to add additional.c to the build process as custom code
configs = getActiveConfigSet(gcs);
configs.set_param('SimUserSources', 'additional.c');
% now rebuild
slbuild(gcs)

I can verify that the config set is updated by:

checkConfigIsSet = configs.get_param('SimUserSources'); 
disp(checkConfigIsSet); % prints: additional.c

However, the coder does not appear to pick up this new config. When I click on the Configuration settings at the time of code generation: click to open section of the Code Generation report, I see the config value was not updated and additional.c was not compiled into the model.

What am I doing wrong please?

Navan · Accepted Answer · 2016-03-17 20:53:04Z

2

SimUserSources are for simulation builds used by blocks like MATLAB Function block and Stateflow. For code generation, you need to set the param "CustomSource". Try,

slbuild(gcs);
% generate additional.c file using files created by slbuild()
% ...
% now attempt to add additional.c to the build process as custom code
configs = getActiveConfigSet(gcs);
configs.set_param('CustomSource', 'additional.c');
% now rebuild
slbuild(gcs)

answered Mar 17, 2016 at 20:53

Navan

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