Simulink Diagram to C code - function

Using R2011b.

I have created a simple Simulink diagram with three inputs & one output. When I generate C code for the model, the output is either an external reference or scoped to the file.

How do I get the output to be the return value?

ex. real_T output foobar(real_T inputA, real_T inputB, real_T inputC)

I've tried countless combinations via the Configuration Parameters dialogs.

Answer 1

[TAB]

Hope you are using Embedded coder with simulink coder (Real time workshop).

To change the model function prototype goto to Interface tab --

• Clear the checkbox Generate reusable code and click on Configure Functions button.
• Set the Function specification --> Model specific C prototype.
• Enter function name --> foobar and click on Get Default Configuration button. A function argument table will appear.
• For all the ports select category --> Value.

Note that, if you has multiple outputs from the mode l, as C language fundamental only one output can be taken as function return argument.

See Function Prototype Control for details.