How to integrate nested structures in C with Simulink?

I have some legacy code written in C that I would like to integrate with SIMULINK. Some nonsense code to describe the structure of the C-code is shown below:

legacy.h

typedef float myType1;
typedef int myType2;

typedef struct {
    myType1 var1;
    myType2 var2;
} myStruct;

void myFcn(myStruct* a, myType1* b, myType2 c);

legacy.c

 #include "legacy.h"
 
 void myFcn(myStruct* a, myType1* b, myType2 c)
 {
     // Function does something.
 }

My goal is to end up with a block in SIMULINK with the same functionality as the function written in C. Both the legacy code tool and the C-caller block work well when using only the standard data types, or even structures comprising of the standard data types as input arguments. But I can't get it to work with either of these methods when one of the input arguments is a struct comprising of other non-standard data types. Is there a way to solve this problem?

Answer 1

[Fangjun Jiang]

myType1 would be a Simulink.AliasType, myStruct would be a Simulink.Bus

Look in document for this objects and you should be able to generate the code as your template.