#ifndef INCLUDED_STOPWATCH_H
#define INCLUDED_STOPWATCH_H

#ifndef INCLUDED_OS_SYSTICK_H
#include <os_systick.h>
#endif /*INCLUDED_OS_SYSTICK_H*/


/* ------------------------------------------------------------------------------------------------------------------ */
/*  */

typedef struct {
    volatile os_tick_t start_tick;
    volatile os_tick_t end_tick;
}stopwatch_t;

OS_STATIC_FORCE_INLINE
void stopwatch_init(stopwatch_t* self) {
    self->start_tick = os_systick_safe_get();
    self->end_tick = 0;
}

OS_STATIC_FORCE_INLINE
void stopwatch_start(stopwatch_t* self) {
    self->start_tick = os_systick_safe_get();
}

OS_STATIC_FORCE_INLINE
void stopwatch_stop(stopwatch_t* self) {
    self->end_tick = os_systick_safe_get();
}

OS_STATIC_FORCE_INLINE
os_tick_t stopwatch_elapsed_ticks(stopwatch_t* self) {
    return self->end_tick - self->start_tick;
}


#endif /*INCLUDED_STOPWATCH_H*/