Question

I am a newbie writing code for sound playback via “alsa api”.

I have to repeatedly call a function send_output() 10 times in a sec as:

while(true)
{
     send_output();
     usleep(100000);
}

but this is a bad way of programming since within the usleep() function processor is still busy executing the code.

I want to know the way (for I know it exists) to put the function send_output() into a periodic callback function so that in between the calls, the processor can be kept free for other heavy tasks. Can you help me?

P.S. I am programming on ‘Beagleboard’ which has a very low clock rate and need to do other tasks too.

Thanks.

Answer 1

man usleep

   usleep - suspend execution for microsecond intervals