MATLAB: How to load refernce model parameters with Callback ” PreLoadFcn” for code generation

Question

I am automating the code generation process by using a .m script that uses rtwbuild('MyModel') to initiate the build. 'MyModel' references a 'ReferenceModel'. This 'RefrenceModel' uses the callback PreloadFcn to run 'MyParameters.m'

My problem is that when I use rtwbuild('MyModel'), 'MyParameters.m' is never run so the build process errors out because none of my parameters are defined.

If I run 'MyParameters.m' before rtwbuild('MyModel') it builds fine. However, I don't want to have to run 'MyParameters.m' before rtwbuild('MyModel'). I thought the PreloadFcn callback should work.

Am I doing something wrong? Or do callback functions not work in reference models for rtwbuild?

Thanks,

FYI: MATLAB 2013b, Embedded Coder v6.5, Simulink Coder v8.5, MATLAB coder v2.5

Answer 1

After researching the Callback in the help, I found this nugget of info: http://www.mathworks.com/help/simulink/ug/using-callback-functions.html

At the bottom it says to avoid 'run' commands in callback code. Good to know!

Removed the 'run' command, left the name of the m script.

It now builds perfectly!