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#ifndef TIMER_H_
#define TIMER_H_
#include "util.h"
#ifndef TIMER_CPS
# define TIMER_CPS 1000
#endif
#define TIMERCPS ((_timcnt_t)(TIMER_CPS))
#ifndef TIMER_BITLEN
# define TIMER_BITLEN 16
#endif
#if TIMER_BITLEN == 16
typedef uint16_t _timcnt_t;
typedef int16_t _signed_timcnt_t;
#elif TIMER_BITLEN == 24
typedef uint24_t _timcnt_t;
typedef int24_t _signed_timcnt_t;
#elif TIMER_BITLEN == 32
typedef uint32_t _timcnt_t;
typedef int32_t _signed_timcnt_t;
#else
# error "Invalid TIMER_BITLEN"
#endif
struct timer {
_timcnt_t count;
};
_timcnt_t timer_now(void);
bool timer_expired(const struct timer *timer);
int32_t timer_ms_since(const struct timer *timer);
void timer_arm(struct timer *timer, int32_t millisec);
void timer_set_now(struct timer *timer);
void timer_add(struct timer *timer, int32_t millisec);
void timer_init(void);
#endif /* TIMER_H_ */
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