Redirect output from C to Matlab

I'm using Linux & Matlab R2017.

I have a C program, which have an infinite output via

printf()

which I want to direct to matlab.

I'm able to run this program like this

unix('./prog')

after that I have output, but I dont know how to save it to matlab array.

Actually, I want to make it like FIFO, but no idea how.. As I know in matlab no pipes like in bash.

Answer 1

[Walter Roberson]

[status, message] = system('./prog 2>&1');

Now the output will be in message

There is a popen() contribution in the File Exchange, but it is only single direction.

[Nikolay Konstantinov]

Thank you for answer! Yes, it's true. But I want processing it real-time, but I got message array only after interrupting.

There is another approach, I've made a pipe. and run C program at terminal

   ./prog > PIPE;

in C I have

 fd = open(portname, O_RDWR | O_NOCTTY | O_SYNC);
 for (p = buf; rdlen-- > 0; p++)
   printf("%hu ", *p);

Then I'm able to read it in matlab, just like a file. But how can I flush it?

[Walter Roberson]

MATLAB is weak on flushing. It exists for the Instrument Control Toolbox, which you are not using. Otherwise you could experiment with using ftell() to determine the current size and then fseek() to that size, but I am not confident that would work with a pipe.