14 lines
357 B
C
14 lines
357 B
C
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#include "api-hal-delay.h"
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void delay_us_init_DWT(void) {
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CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
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DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
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DWT->CYCCNT = 0U;
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}
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void delay_us(float time) {
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uint32_t start = DWT->CYCCNT;
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uint32_t time_ticks = time * (SystemCoreClock / 1000000);
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while((DWT->CYCCNT - start) < time_ticks) {
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};
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}
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