MC100/Applications/bsp/timer_count32.h

#ifndef _TIMER_COUNT32_H__
#define _TIMER_COUNT32_H__
#include "os/os_type.h"

typedef struct {
	u32 exec_count;
	u32 exec_time;
	u32 intval_count;
	u32 intval_time;
	u32 exec_max_time;
	u32 exec_max_error_time;
	u32 exec_time_error;
}measure_time_t;

void timer_count32_init(void);
u32  timer_count32_get(void);
u32 timer_count32_delta_us(u32 prev_count, u32 *p_update);
void time_measure_start(measure_time_t *m);
void time_measure_end(measure_time_t *m);

#define COUNT_CLK (10 * 1000000)
#define COUNT_2_US(c) (c/10)

static __inline__ u32 timer_count32_getus(u32 now, u32 count) {
	u32 delta = now - count;
	if (now < count) { //wrap
		delta = 0xFFFFFFFF - count + now + 1;
	}
	return COUNT_2_US(delta);
}

#endif	/* _TIMER_COUNT32_H__ */