How to give a structure with arrays in simulink to a custom C code function?

I'm trying to give a structure to a C function in Simulink. My steps so far:

- Included the .h & .c in configuration parameters custom code. My header has a structure defind:

typedef struct mystruct   
      {  int m; 
      int *i; 
      double *x;}mystruct

- Now in my MATLAB function under Simulink:

function y = fcn(u)%#codegen   
      m=int32(1);
      i=zeros(10,1,'int32');
      x=zeros(10,1); 
      s.m=m;
      s.i=i;
      s.x=x;
      coder.cstructname(s,'mystruct','extern');
      D=int32(0);
      D=coder.ceval('accesmystruct',coder.ref(s));
      y=10;

If I run the code I get a long error from the code generation that indicates that it can't be compiled in c-code. The error is:

 c2_Test2.c 
       c2_Test2.c(57) : error C2143: syntax error : missing ')' before '*' 
       c2_Test2.c(57) : error C2081: 'cs_size' : name in formal parameter   list illegal 
       c2_Test2.c(57) : error C2143: syntax error : missing '{' before '*' 
       c2_Test2.c(57) : error C2059: syntax error : ')' 
       c2_Test2.c(60) : error C2143: syntax error : missing ')' before '*'   
       ....

This only happens if I declare the two variables `i` and `x` as Pointers. If I declare them as scalar in the header and MATLAB function it works. Does any one see what I'm doing wrong?

Answer 1

[Killian Greliche]

Hi,

I've got an answere to my question in "Stackoverflow", so if you are interested hir a link:

http://stackoverflow.com/questions/28040771/how-to-give-a-structure-with-arrays-in-simulink-to-a-custom-c-code-function