output argument of a function in the source code generated by the Simulink coder

Is the output argument of a function in the source code generated by the Simulink coder always void and the output is only passed in the form of a global variable?

Answer 1

[Adit Kirtani]

Hi,

From my understanding, you’re looking to see if every type of function block in Simulink is represented by a void function type and a global variable for output by Simulink Coder.

I’ve attached a handy link to the Simulink Coder documentation where you can see the different code templates for various function blocks, under the “Choose a Modelling Pattern” section.

https://www.mathworks.com/help/rtw/ug/generate-code-for-a-model-with-simulink-functions.html#mw_95061e64-a611-41ef-b50d-8590302a2cff

As you can see, all of these follow the same pattern of having a void return type and they store their output in a global data type.

Embedded Coder does provide options to configure function interfaces for simpler integration of generated code with external code, which you may look at here:

https://www.mathworks.com/help/ecoder/ug/configure-simulink-function-code-interface.html

I hope this helps,

Adit Kirtani.