timer.h

通用OSD控制(51单片机控制的TFTLCD源码,MTV018）

#ifndef _TIMER_H
#define	_TIMER_H

#define HZ		20L

extern volatile unsigned char jiffies;
extern struct time_val xtime;

#define time_after(a,b)		((char)(b) - (char)(a) < 0)
#define time_before(a,b)	time_after(b,a)

#define time_after_eq(a,b)	((char)(a) - (char)(b) >= 0)
#define time_before_eq(a,b)	time_after_eq(b,a)

struct time_val {
	unsigned char min;
	unsigned char sec;
	unsigned char msec10;
};

#endif