40 lines
866 B
C
40 lines
866 B
C
#ifndef _TIMER_H
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#define _TIMER_H
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#include <stdint.h>
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#include <avr/io.h>
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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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/*
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clock stuff
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*/
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extern volatile uint8_t clock_flag_10ms;
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extern volatile uint8_t clock_flag_250ms;
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extern volatile uint8_t clock_flag_1s;
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// If the specific bit is set, execute the following block exactly once
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// and then clear the flag.
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#define ifclock(F) for (;F;F=0 )
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/*
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timer stuff
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*/
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void timer_init(void) __attribute__ ((cold));
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void setTimer(uint32_t delay);
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void timer_stop(void);
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#endif /* _TIMER_H */
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