代码实例

hTimer = TIMER_open(TIMER_DEVANY,0); /* open a timer */ /* Configure the timer. 1 count corresponds to 4 CPU cycles in C67 */ /* control period initial value */ TIMER_configArgs(hTimer, 0x000002C0, 0xFFFFFFFF, 0x00000000); /* Compute the overhead of calling the timer. */ start = TIMER_getCount(hTimer); /* to remove L1P miss overhead */ start = TIMER_getCount(hTimer); /* get count */ stop = TIMER_getCount(hTimer); /* get count */ overhead = stop - start; start = TIMER_getCount(hTimer); /* get count */ /* Call a function here. */ /* get count */ diff = (TIMER_getCount(hTimer) – start) ? overhead; TIMER_close(hTimer); printf(”%d cycles n”, diff*4); 注意，C6713上定时器的一个计数值对应4个时钟周期。 overhead表示Timer本身配置过程的时钟消耗，所以有diff计算， diff = (TIMER_getCount(hTimer) – start) ? overhead; /* get count */