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unsigned int uDelay(unsigned int delayTime)
{
static struct timeval _tstart, _tend;
static struct timezone tz;
double t,t1,t2;
int i;
gettimeofday(&_tstart, NULL);
t1 = (double)_tstart.tv_sec + (double)_tstart.tv_usec/(1000*1000);
for(i = 0;;i++)
{
gettimeofday(&_tend, NULL);
t2 = (double)_tend.tv_sec + (double)_tend.tv_usec/(1000*1000);

t = t2 - t1;
if(t > (double)delayTime/(1000*1000))
{
return 0;
}
sched_yield();
}

}