数码管计时器程序

#include
typedef unsigned char uint8;
typedef unsigned int uint16;
typedef unsigned long uint32;
code uint8 number[]={0xc0,0xf9,0xa4,0xb0, 0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83， 0xa7,0xa1,0x86,0x8e};       //数字0到F
uint16 counter = 0;                                                              //定义计数器初始化
uint8 a[6];                                                                            //六个数码管
sbit ENLED = P1^4;
sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
void timer1_led()
{
 TMOD |= 0x10;                                                                    //寄存器状态M0位置1，或运算
 TMOD &= 0xDF;
 TH1 = 0xFC;                                                                       //12*(65535-x)/11059200 =1s
 TL1 = 0x67;
 TR1 = 1;                                                                           //定时器置1打开，计数器开始计时
}
void int_init()
{
 ET1 = 1;                                                                             // 打开定时器1溢出中断使能置1
 EA = 1;                                                                               //总阀门打开
}
 refresh_led()
{
 static uint8 j = 0;                                                                //静态变量刷新
  switch(j)
  {
   case 0:ADDR0 = 0;ADDR1 = 0;ADDR2 = 0;j++;P0 = number[a[0]];break;
   case 1:ADDR0 = 1;ADDR1 = 0;ADDR2 = 0;j++;P0 = number[a[1]];break;
   case 2:ADDR0 = 0;ADDR1 = 1;ADDR2 = 0;j++;P0 = number[a[2]];break;
   case 3:ADDR0 = 1;ADDR1 = 1;ADDR2 = 0;j++;P0 = number[a[3]];break;
   case 4:ADDR0 = 0;ADDR1 = 0;ADDR2 = 1;j++;P0 = number[a[4]];break;
   case 5:ADDR0 = 1;ADDR1 = 0;ADDR2 = 1;j = 0;P0 = number[a[5]];break;
   default :break;
  }
}
main()
{
 ENLED = 0;ADDR3 = 1;                                                                 //138译码器使能
 timer1_led();                                                                                 //定时初始化
 int_init();
 while(1);
}
void interrupt_timer1() interrupt 3                                                //中断函数
{
 static uint32 sec=0;                                                                     //定义变量
 TH1 = 0xFC;
 TL1 = 0x67;
 counter++;
if(1000==counter)                                                                     
{
 sec++;
 counter=0;
 a[0] = sec%10;                                                                         //个位数取余
 a[1] = sec/10%10;                                                                    //十位取余
 a[2] = sec/100%10;                                                                  //百位取余
 a[3] = sec/1000%10;                                                                //...............
 a[4] = sec/10000%10;
 a[5] = sec/100000%10;
}
 refresh_led();
}