Non-static tunable parameters in C++ class code generation.

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Hello,
I use Simulink Coder and Embedded Coder to auto-generate a C++ class from a Simulink model. The Simulink model contains only Simulink function blocks (Simulink/User-Defined Functions/Simulink Function) on the root level. The C++ class is instantiated several times from a C++ wrapper and its functions (Simulink function blocks) are called. A parameter structure with a bus data type in the base workspace is used to parametrize the Simulink function blocks. The storage class of the parameter structure is set to Model default.
The code generation uses the following settings:
  • Code interface packaging: C++ class
  • Parameter visibility: public
In MATLAB R2018b the generated C++ class contains:
// Class declaration for model Test
class TestModelClass {
// public data and function members
public:
// Tunable parameters
P_Test_t Test_P;
In MATLAB R2019a the generated C++ class contains:
// Class declaration for model Test
class TestModelClass {
// public data and function members
public:
// Tunable parameters
static P_Test_t Test_P;
The only difference is the static keyword for the tunable parameters.
As a result, I cannot change the tunable parameters for a single instance, since the parameters are declared as static and, therefore, shared across all instances. Is there a possibility to avoid the static keyword or should I use a different approach in MATLAB R2019a?
Thx for helping...
  8 Comments
db1024
db1024 on 15 Oct 2020
I updated the release of this question to R2020b, since the issue exists in R2019a, R2019b, R2020a, and R2020b.

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Answers (1)

David Balbuena
David Balbuena on 26 Jul 2023

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