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18 lines
286 B
18 lines
286 B
14 years ago
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#ifndef TIMER_H
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#define TIMER_H 1
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#include <stdint.h>
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#define TIMER_DIFF(a, b) ((a) >= (b) ? (a) - (b) : UINT16_MAX - (b) + (a))
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extern uint16_t timer_count;
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void timer_init(void);
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void timer_clear(void);
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uint16_t timer_read(void);
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uint16_t timer_elapsed(uint16_t last);
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#endif
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