STC89C52-秒表（精确10ms）同时LED二进制计数

#include <reg52.h>

typedef  unsigned char   uint8;

typedef  unsigned int    uint16;

typedef  unsigned long   uint32;

/*数码管0到F定义 */

code uint8 number[] = {0xc0,0xf9,0xa4,0xb0,

0x99,0x92,0x82,0xf8,

0x80,0x90,0x88,0x83,

0xa7,0xa1,0x86,0x8e};

uint8 a[6];

uint16 counter1 = 0;

uint8 counter = 0;

sbit ENLED = P1^4;

sbit ADDR0 = P1^0;

sbit ADDR1 = P1^1;

sbit ADDR2 = P1^2;

sbit ADDR3 = P1^3;

/*定时器1初始化，并定时1ms*/

void timer1_init()

{

TMOD |= 0x10;

TMOD &= 0xdf;

TH1   = 0xFC;

TL1   = 0x67;

TR1   = 1;

}

/*中断初始化*/

void int_init()

{

ET1 = 1;

EA  = 1;

}

/*刷新数码管*/

void refresh_led()

{

static uint8 j = 0;

uint8 b = number[a[2]] - 0x80 ;

switch(j)

{

case 0: ADDR0 = 0;ADDR1 = 0;ADDR2 = 0;P0 = number[a[0]];break;

case 1: ADDR0 = 1;ADDR1 = 0;ADDR2 = 0;P0 = number[a[1]];break;

case 2: ADDR0 = 0;ADDR1 = 1;ADDR2 = 0;P0 = b;break;

case 3: ADDR0 = 1;ADDR1 = 1;ADDR2 = 0;P0 = number[a[3]];break;

case 4: ADDR0 = 0;ADDR1 = 0;ADDR2 = 1;P0 = number[a[4]];break;

case 5: ADDR0 = 1;ADDR1 = 0;ADDR2 = 1;P0 = number[a[5]];break;

default: break;

}

if(7 == j++) j = 0;

}

main()

{

ENLED = 0; ADDR3 = 1;

timer1_init();

int_init();

while(1);

}

/*中断函数*/

void interrupt_timer1() interrupt 3

{

static uint32 sec = 0;

TH1 = 0xFC;

TL1 = 0x66;

counter++;

if(counter == 10)

{

sec++;

counter = 0;

a[0] = sec%10;

a[1] = sec/10%10;

a[2] = sec/100%10;

a[3] = sec/1000%10;

a[4] = sec/10000%10;

a[5] = sec/100000%10;

if(sec%100 == 0) counter1++;   //LED时间1s

if(counter1 == 256) counter1 = 0;

}

if(counter == 9)

{ADDR0 = 0;ADDR1 = 1;ADDR2 = 1;P0 = ~counter1 ;}

refresh_led();

}