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43 lines
806 B
43 lines
806 B
#ifndef UTIL_TIME_H
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#define UTIL_TIME_H
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#include <util/atomic.h>
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#include "device.h"
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#define DIV_ROUND(dividend, divisor) (((dividend) + (divisor) / 2) / (divisor))
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#define CLOCK_TICKS_PER_SEC CONFIG_AFSK_DAC_SAMPLERATE
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typedef int32_t ticks_t;
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typedef int32_t mtime_t;
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volatile ticks_t _clock;
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inline ticks_t timer_clock(void) {
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ticks_t result;
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ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
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result = _clock;
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}
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return result;
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}
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inline ticks_t ms_to_ticks(mtime_t ms) {
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return ms * DIV_ROUND(CLOCK_TICKS_PER_SEC, 1000);
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}
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inline void cpu_relax(void) {
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// Do nothing!
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}
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inline void delay_ms(unsigned long ms) {
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ticks_t start = timer_clock();
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unsigned long n_ticks = ms_to_ticks(ms);
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while (timer_clock() - start < n_ticks) {
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cpu_relax();
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}
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}
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#endif |