单片机计时器100000秒以内

硬件连接：

代码：

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar Count;

sbit Dot = P0^7;

uchar code DSY_CODE[]=

{

  0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f

};

uchar Digits_of_6DSY[]={0,0,0,0,0,0};

void DelayMS(uint x)

{

  uchar i;

while(--x)

{

for(i=0;i<120;i++);

}

}

void main()

{

  uchar i,j;

P0 = 0x00;

P3 = 0xff;

Count =0;

TMOD = 0x01;

TH0  = (65535-50000)/256;

TL0  = (65535-50000)%256;

IE = 0x82;

TR0 = 1;

while(1)

{

j = 0x7f;

for(i=5;i!=-1;i--)

{

j=_crol_(j,1);

P3 = j;

P0 = DSY_CODE[Digits_of_6DSY[i]];

if(i==1) P0 |= 0x80;

DelayMS(2);

}

}

}

void Time0() interrupt 1

{

  uchar i;

TH0  = (65535-50000)/256;

TL0  = (65535-50000)%256;

if(++Count !=2) return;

Count = 0;

Digits_of_6DSY[0]++;

for(i=0;i<=5;i++)

{

if(Digits_of_6DSY[i] == 10)

{

Digits_of_6DSY[i] = 0;

if(i != 5) Digits_of_6DSY[i+1]++;

}

else break;

}

}