二個七段順/逆時針 二個上/下數計數

#include <at89x52.h>

char seg_7_table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,

                    0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xff};

char scan_line[]={0xfe,0xfd,0xfb,0xf7};

char bcd[]={16,16,16,16};

char bdata flag;

sbit cck_flag=flag^0;

sbit anti_cck_flag=flag^1;

sbit up_flag=flag^2;

sbit down_flag=flag^3;

sbit sw1=P3^0;

sbit sw2=P3^1;

int cck_cnt=-1;

int time=20,j;

int up_cnt=-1;

void delay_1ms(int k)

{

 int i,j;

 for(i=0;i<k;i++)

  for(j=0;j<114;j++)

        ;

}

void main()

{

 IE=0x8A;

 TMOD=0x10;

 TH0=(8192-5000)/32;

 TL0=(8192-5000)%32;

 TH1=(65536-50000)/256;

 TL1=(65536-50000)%256;

 TR0=1;

 TR1=1;

 cck_flag=1;

 anti_cck_flag=0;

up_flag=1;

down_flag=0;

 while(1)

 {

  if(sw1==0) 

  {

  cck_flag=~cck_flag;

  anti_cck_flag=~anti_cck_flag;  

  delay_1ms(50);  while(sw1!=1);  delay_1ms(50);  

}

if(sw2==0)

{

up_flag=~up_flag;

  down_flag=~down_flag;  

  delay_1ms(50);  while(sw2!=1);  delay_1ms(50);

}

 }

}

void T0_int(void) interrupt 1

{

 TH0=(8192-5000)/32;

 TL0=(8192-5000)%32;

 P1=seg_7_table[bcd[j]];

 P2=scan_line[j];

 j++;

 if(j==4)//j=2顯示兩個七段顯示器、j=4顯示四個七段顯示器

 {

  j=0;

 }

}

void T1_int(void) interrupt 3

{

TH1=(65536-50000)/256;

TL1=(65536-50000)%256;

time--;

if(time==0)

{

time=20;

if(cck_flag==1)

{

cck_cnt++;

if(cck_cnt>7){ cck_cnt=0;}

}

else if(anti_cck_flag==1)

{

cck_cnt--;

if(cck_cnt<0){cck_cnt=7; }

}

if(up_flag==1)

{

up_cnt++;

if(up_cnt>99)

{

up_cnt=0;

}

}

else if(down_flag==1)

{

up_cnt--;

if(up_cnt<0)

{

up_cnt=99;

}

}

bcd[3]=up_cnt/10;

bcd[2]=up_cnt%10;

if(cck_cnt==0){ bcd[1]=10 ; bcd[0]=16; }

if(cck_cnt==1){ bcd[1]=16 ; bcd[0]=10; }

if(cck_cnt==2){ bcd[1]=16 ; bcd[0]=11; }

if(cck_cnt==3){ bcd[1]=16 ; bcd[0]=12; }

if(cck_cnt==4){ bcd[1]=16 ; bcd[0]=13; }

if(cck_cnt==5){ bcd[1]=13 ; bcd[0]=16; }

if(cck_cnt==6){ bcd[1]=14 ; bcd[0]=16; }

if(cck_cnt==7){ bcd[1]=15 ; bcd[0]=16; }

}

}