在DSP671x上使用Timer统计信号处理算法的时间消耗

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在DSP671x上使用Timer统计信号处理算法的时间消耗
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hTimer = TIMER_open(TIMER_DEVANY,0); /* open a timer */
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+ d# X) L1 U% m5 p" Z0 e/* Configure the timer. 1 count corresponds to 4 CPU cycles in C67 */
/* control period initial value */
9 ]7 x  j) F- E# S+ CTIMER_configArgs(hTimer, 0x000002C0, 0xFFFFFFFF, 0x00000000);

/* Compute the overhead of calling the timer. */
6 L4 \. s! J% ^  C6 o  V* F8 }) e6 @start = TIMER_getCount(hTimer); /* to remove L1P miss overhead */
( r# N" x/ ?) nstart = TIMER_getCount(hTimer); /* get count */
8 {7 [' A' E- R4 ~$ Fstop = TIMER_getCount(hTimer); /* get count */
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. @, y! b3 x9 J; K9 voverhead = stop - start;
/ t4 ^7 [0 ^1 a, ?start = TIMER_getCount(hTimer); /* get count */

/* Call a function here. */

* V5 g" ~  b( y) f/* get count */
+ N; Z! g2 g; B$ Ydiff = (TIMER_getCount(hTimer) – start) ? overhead;
2 [; w; b) y) d7 CTIMER_close(hTimer);
# e, ~* X0 N3 Tprintf(”%d cycles \n”, diff*4);
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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；
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wu68aq

谢谢楼主分享