Hi Ali,
When working with Simulink models and generating C code, only the parameters that are actively used in the mode - like those connected to an "Outport", are typically included in the generated code. This behaviour is because Simulink's Code Generation optimizes the code by omitting unused variables or constants to reduce memory usage and improve efficiency.
In your case, you’ve noticed that the "Constant" block without an "Outport" doesn’t result in the parameter being included in the generated C code. The generated code only includes "parameter1" because it is referenced by an "Outport". The "model_name.h" file shows this as comment in generated C code:
/*-
* These blocks were eliminated from the model due to optimizations:
*
* Block '<Root>/parameter2' : Unused code path elimination
*/
For more information on how dead code paths and unused blocks are eliminated from generated code, refer to the following documentation link:
Hope it helps.
