6bit_cymometer.txt

LCD1602.rar

#include<reg52.h>
#include<math.h>

#define uchar unsigned char
#define unit unsigned int
#define ulong unsigned long		   //(共阴)
uchar code dispbit[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};	// 定义位选
uchar code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40};//定义段码

uchar dispbuf[8]={0,0,0,0,0,0,10,10}; //显示缓冲
uchar temp[8];
uchar dispcount;
uchar T0count;//T0计数
uchar timecount;//时间计数
bit flag;
ulong x;

void main(void)
{
	TMOD=0x15;
	TH0=0;
	TL0=0;
	TH1=(65536-4000)/256;
	TL1=(65536-4000)%256;
	TR1=1;
	TR0=1;
	ET0=1;
	ET1=1;
	EA=1;
	while(1)
	{
		uchar i;
		if(flag==1)
		{
			flag=0;
			x=T0count*65536+TH0*256+TL0;
			for(i=0;i<8;i++)
			{
			 temp[i]=0;
			}
			i=0;
			while(x/10)
			{
				temp[i]=x%10;
				x=x/10;
				i++;
			}
			temp[i]=x;
			for(i=0;i<6;i++)
			{
				dispbuf[i]=temp[i];
			}
			timecount=0;
			T0count=0;
			TH0=0;
			TL0=0;
			TR0=1;
		}
	}
}
void t0(void) interrupt 1 using 1//T0工作在计数状态下，T0的最大计数频率为250KHz
{
    T0count++;
}
void t1(void) interrupt 3 using 2
{
	TH1=(65536-4000)/256;
	TL1=(65536-4000)%256;
	timecount++;
	if(timecount==250)
	{
		TR0=0;
		timecount=0;
		flag=1;
	}

	P2=dispbit[dispcount];
	P0=dispcode[dispbuf[dispcount]];
	dispcount++;
	if(dispcount==8)
	{
		dispcount=0;
	}
}