27 lines
598 B
C
27 lines
598 B
C
#ifndef _TIMER_H
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#define _TIMER_H
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#include <stdint.h>
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#include "arduino.h" // For F_CPU on ARM.
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// time-related constants
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#define US * (F_CPU / 1000000)
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#define MS * (F_CPU / 1000)
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/// How often we overflow and update our clock.
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/// With F_CPU = 16MHz, max is < 4.096ms (TICK_TIME = 65535).
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#define TICK_TIME 2 MS
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/// Convert back to ms from cpu ticks so our system clock runs
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/// properly if you change TICK_TIME.
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#define TICK_TIME_MS (TICK_TIME / (F_CPU / 1000))
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void timer_init(void);
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uint8_t timer_set(int32_t delay, uint8_t check_short);
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void timer_stop(void);
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#endif /* _TIMER_H */
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