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fix issue #1

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now you can use delay_us with start_perf_counter() and stop_perf_counter.
This commit is contained in:
Gabriel Wang 2021-06-08 11:21:18 +01:00
parent 4864c033b0
commit 4ae1b3202c
2 changed files with 7 additions and 7 deletions
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lib/perf_counter.lib
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perf_counter.c
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@ -27,7 +27,7 @@
#endif
#ifndef PERF_CNT_DELAY_US_COMPENSATION
# define PERF_CNT_DELAY_US_COMPENSATION 82
# define PERF_CNT_DELAY_US_COMPENSATION 90
#endif
/*============================ MACROS ========================================*/
@ -305,18 +305,18 @@ void __perf_counter_init(void)
init_cycle_counter(true);
}
void delay_us(int32_t iUs)
void delay_us(int32_t nUs)
{
iUs *= s_nUnit;
int64_t lUs = nUs * s_nUnit;
if (iUs <= PERF_CNT_DELAY_US_COMPENSATION) {
if (lUs <= PERF_CNT_DELAY_US_COMPENSATION) {
return ;
}
iUs -= PERF_CNT_DELAY_US_COMPENSATION;
lUs -= PERF_CNT_DELAY_US_COMPENSATION;
start_cycle_counter();
while(stop_cycle_counter() < iUs);
lUs += get_system_ticks();
while(get_system_ticks() < lUs);
}
/*! \note the prototype of this clock() is different from the one defined in