Hi Bogdan,
What you're observing is indeed the expected behaviour of MATLAB's Embedded Coder. Embedded Coder is designed to replace constants and parameters with their actual values directly in the generated code to improve execution efficiency. This is because accessing a "#define" macro or a constant variable can potentially be slower than using the actual value directly.
The use of enumerated types, as you've found, is indeed one way to get around this issue. Here's an example of how to define and use an enumerated type:
1. Define the enumerated type in MATLAB:
classdef Status < Simulink.IntEnumType
enumeration
STOP (0)
CLOSED (1)
end
end
2. Use the enumerated type in Stateflow:
if (Input1 == Status.STOP) ...
if (Input2 == Status.CLOSED) ...
This way, "Status.STOP" and "Status.CLOSED" will appear as "STOP" and "CLOSED" in the generated code.
If maintaining the "#define" macros in the generated code is critical for your application, you might want to consider using a different code generation tool or manually post-processing the generated code to replace the constant values with their corresponding macros.
Attached below are some documentation links that you may find helpful:
- Define Enumeration Classes - MATLAB & Simulink (mathworks.com)
- Use Enumerated Data in Generated Code - MATLAB & Simulink (mathworks.com)
Hope this helps!
Karan Singh Khati
