Hi,

I have developed a very simple task in native code and it works fine (included in native.tar.gz). This
simple task generates a square waveform through the parallel port ( and also the speaker).

Currently I'm trying to transform this code into the POSIX skin (Makefile and .c included in posix,tar.gz).
Unfortunatelly It does not work, although the parallel port shows a square waveform its period is not the desired
one (0.1ms), its period is very small. This makes the system to freeze.

It seems that pthread_wait_np is not working properly, or may be I'm not using pthread_make_periodic_np
properly. I used it in the following way :

        #define PERIOD 100000

        clock_gettime     ( CLOCK_REALTIME, &now);
        pthread_make_periodic_np (pthread_self(), &now, (struct timespec *)PERIOD);

I also have tried

       struct timespec period;
       period.tv_sec=0;
       period.tv_nsec=PERIOD;

        clock_gettime     ( CLOCK_REALTIME, &now);
        pthread_make_periodic_np (pthread_self(), &now,&period);

Although both compile and execute, non of them works fine to me. Any clue ?

Best wishes,
Ramon