static void WaitForPoll(void) { // Implement a blocking read
static double time0 = 0; // start time in seconds
double timer; // time remaining from last poll usec
timer = quisk_sound_state.data_poll_usec - (QuiskTimeSec() - time0) * 1e6;
if (timer > 1000.0) // see if enough time has elapsed
QuiskSleepMicrosec((int)timer); // wait for the remainder of the poll interval
time0 = QuiskTimeSec(); // reset starting time value
}
void ptimer(int counts) // used for debugging
{ // print the number of counts per second
static unsigned int calls=0, total=0;
static time_t time0=0;
time_t dt;
if (time0 == 0) {
time0 = (int)(QuiskTimeSec() * 1.e6);
return;
}
total += counts;
calls++;
if (calls % 1000 == 0) {
dt = (int)(QuiskTimeSec() * 1.e6) - time0;
printf("ptimer: %d counts in %d microseconds %.3f counts/sec\n",
total, (unsigned)dt, (double)total * 1E6 / dt);
}
}