timer.c

指纹识别源代码,用于智能门紧,还有配合MF800卡使用

#include "reg58.h"

#define _TIMER_C_
#include "timer.h"
#include "clock.h"
#include "setup.h"
#include "sram.h"

unsigned char data timerl,timerh,timeruh;
unsigned char data datetime[8],seconds;
bit secondsflag;
///////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////

void init_timer()
{
	unsigned char tempdata;
	TMOD=0X22;		//timer0:8bits reload ,timer1:8bits reload
	TCON=0X50;		//start timer0 and timer1
	TH0=31;

	//SCON=0X70;		//seted in rxd.c	//10bits asynchronous variable
	//SCON1=0X70;		//seted in rxd.c 	//10bits asynchronous	variable

	T2CON=0X34;		//serial port 0 using timer2 as timebase
	T2MOD=0;

	SMOD1=1;
	RCAP2H=0XFF;
	RCAP2L=0XB8;		//set uart0 baudrate 9600

	tempdata=readbaudrate();
	TH1=baudratetimer[tempdata];		//set baudrate of uart1

	getdatetime();

	IE=0X52;		//enable uart1,uart0,timer0	
	PCON=0X80;
	//IE=0X12;
	EA=1;
}

void timer0() interrupt 1 using 1
{
	timerl++;
	if(!timerl)
	{
		timerh++;

		if(!(timerh&0x1f))
		{
			secondsflag=1;
			seconds++;
		}

		if(!timerh)
		{
			timeruh++;
		}
	}
}

void timer1() interrupt 3 using 1
{
}

void timer2() interrupt 5 using 1
{
}
void delayTimerl(unsigned char delaytime)
{
	unsigned char temptimer;
	temptimer=timerl;
	while((timerl-temptimer)<delaytime);
}
void delaytimerh(unsigned char delaytime)
{
	unsigned char temptimer;
	temptimer=timerh;
	while((timerh-temptimer)<delaytime);
}

void delay50us()
{
	unsigned char i=100;
	for(;i;i--);
}

void delay500ms()
{
	unsigned char i,j;
	for(i=0;i<100;i++)
	{
		for(j=0;j<100;j++)
		{
			delay50us();
		}
	}
}
/*void delaytimeruh(unsigned char delaytime)
{
	unsigned char temptimer;
	temptimer=timeruh;
	while((timeruh-temptimer)<delaytime);
}*/
//void delay(unsigned char delaytime)
//{
//	unsigned char temptimer;
//
//	temptimer=timerl;
//	while((timerl-temptimer)<delaytime);
//	
//}