timer0.c

来自「这是T118和T103的通用程序」· C语言 代码 · 共 46 行

#include "reg51.h"

#define __GLOBAL_H__
#include "Global.h"
#ifdef TIMER0

#define OSDTIME 			12500//4000//12500 //25000  //100000  //0x00FF
#define COLORCALTIME		0x0010
#define TIMER0_COUNT		0xFBEF	//FDF7	//0xFF7D


void Timer0INT(void) interrupt 1
{
	TL0=TIMER0_COUNT&0x00FF;
	TH0=TIMER0_COUNT>>8;

	if(m_wTimer0Cnt==OSDTIME)
  	{
  		m_bTimer0Overflow=1;
	}
	else
		m_wTimer0Cnt++;
}

void Timer0Reset(void)
{
	TL0 = (TIMER0_COUNT & 0x00FF);
	TH0 = (TIMER0_COUNT >> 8);
	m_wTimer0Cnt=0;
	m_bTimer0Overflow=0;
}

void Timer0Start(void)
{
	Timer0Reset();
	TR0=1;	
}

void Timer0Stop(void)
{
	Timer0Reset();
	TR0=0;
	m_bTimer0Overflow=0;
}
#endif