Simulink: How to get a buffer size that can be changed in C code?

Question

I'm using a buffer from DSP System Toolbox in my Simulink model and genereate C code with Embedded Coder. I would like to have some kind of a parameter or define for the buffer size in my generated c code, so I can change it in the c code afterwars. Something like a "#define BUFFER_SIZE 100" or any other definition that can be changed directly in c code. Thanks a lot!

Answer 1

Your question is not clear. One way to allocate a run-time buffer based on input size is to use a pointer and allocate memory on heap via the malloc/calloc calls. The pointer will point to this allocated heap memory block e.g.

void *pointer;

pointer = malloc(input_size);