Arduino digitalWrite using S-Function not working

hi it looks like there is some defect with Matlab S-Function Builder. A simple digitalWrite using S function block does not work. Can anybody point out any errors?

here is the s function settings;

libraries tab:

    #ifndef MATLAB_MEX_FILE
#include <Arduino.h>
    int val = 0;
#endif

discrete updates tab:

    if(xD[0] != 1){
#ifndef MATLAB_MEX_FILE
    pinMode(SW[0], INPUT);
#endif
    xD[0] = 1;
}

outputs tab:

    if(xD[0] == 1){
#ifndef MATLAB_MEX_FILE
    val = digitalRead(SW[0]);
    digitalWrite(out[0], val);
#endif
}

whats wrong with the code? I have doubt in global variable declaration.

any help is appreciated

thanks

Answer 1

[gdz]

The SW[0], out[0] are not defined.