頻率計(jì)程序

下面是頻率計(jì)的電路圖 采用的是51單片機(jī)

 

以下是程序源代碼：
 #include <reg52.h>
 #define  value P2
 #define  place  P0
 unsigned  char  d[4];
 usigned  char Num[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
 sbit  addrC=P1^0;
 sbit  addrB=P1^1;
  sbit  addrA=P1^2;
  sbit  clear=P1^3;

sbit   ledG=P1^4;
 sbit   ledY=P1^5;
 sbit   ledR=P1^6;

unsigned  char  count;
 unsigned  char  gears;
unsigned  int  tN;
 unsigned  int fCnt;
 unsigned long regCnt;
 unsigned  int  pCnt;

void Delay( unsigned  int  DelayTime)
{
      while(DelayTime--);
}
void display()
{
       if(gears==1)
         {
            d[3]=0;
            d[2]=pCnt/100;
            d[1]=(pCnt%100)/10;
            d[0]=pCnt% 10;

             place=0xfe;value=Num[d[3]];Delay(300);
             place=0xfd;value=Num[d[2]];Delay(300); 
             place=0xfb;value=Num[d[1]];Delay(300);
             place=0xf7;value=Num[d[0]];Delay(300);
        
             ledG=1;
             ledY=1;
             ledR=0;
}

else if(gears==2)
{
      d[3]=pCnt/1000;
      d[2]=(pCnt%1000 )/100;
      d[1]=(pCnt%100)/10;
      d[0]=pCnt%10;

       place=0xfe;value=Num[d[3]];Delay(300);
       place=0xfd;value=Num[d[2]];Delay(300);
       place=0xfb;value=Num[d[1]]+0x80;Delay(300);
       place=0xf7;value=Num[d[0]];Delay(300);

        ledG=1;
        ledY=0;
        ledR=1;
}
else  if(gears==3)
{
            d[3]=pCnt/1000;
            d[2]=(pCnt%1000)/100;
            d[1]=(pCnt%100)/10;
            d[0]=pCnt% 10;

            place=0xfe;value=Num[d[3]]+0x80;Delay(300);
            place=0xfd;value=Num[d[2]];Delay(300);
            place=0xfb;value=Num[d[1]];Delay(300);
            place=0xf7;value=Num[d[0]];Delay(300);

            ledG=0;
            ledY=1;
            ledR=1;
}
 else  if(gears==4)
{
            d[3]=0;
            d[2]=0;
            d[1]=0;
            d[0]=0;

            place=0xfe;value=Num[d[3]];Delay(300);
            place=0xfd;value=Num[d[2]];Delay(300);
            place=0xfb;value=Num[d[1]];Delay(300);
            place=0xf7;value=Num[d[0]];Delay(300);

            ledG=0;
            ledY=0;
            ledR=0;
     }
}
 void  intialize()
{
      clear=1;
      addrB=0;
      addrC=0;   
      addrA=0; 
 
      gears=1;
      ledG=1;
       ledY=1;
       ledR=0;
 
      TMOD=0X61;
       ET0=1;
       TR0=1;
       TH0=0x3c;
       TL0=0xb0 ;
        tN=20;
        ET1=1;
        TR1=1;
        TH1=0xff;
         TL1=0xff;
         EA=1;
}
void  main()
{
   intialize();
   while(1)
      {
           display();
       }
}
 void  timer0() interrupt 1
{
         count++;
         if(count==tN)
         {
              ET1=0 ;
              TR1=0;
            regCnt=fCnt;
              fCnt =0;
             count=0;
             clear=0;
             clear=1;
             if(gears==1)
               {
                    if(regCnt<1000)
                            {
                                  pCnt=regCnt;
                             }
                              else
                             {
                                   gears=2;
                                    addrA=1;
                                    TH1=0xec;
                                     TL1=0xec;
                               }
                       }
           else  if(gear==2 )
               {
                       regCnt=regCnt*10*20/100;
                       if(regCnt<10000)
                           {
                                pCnt=regCnt;
                             }
                             else
                               {
                                  gears=3;
                                   TH1=0xce;
                                   TL1=0xce;
                                  }
                           }
                     else  if(gears==3)
                            {  
                               regCnt=regCnt*10*50/1000;
                               if(regCnt<2500)
                           {
                                pCnt=regCnt;
                             }
                             else
                               {
                                  gears=4; 
                                 }
                               }
                                 ET1=1;
                                 TR1=1;
                               }
                                    TH0=0x3c;
                                  //(65536-50000)/256
                                         TL0=0xb0;
                                   //(65536-50000)%256
                                }
                        
                        void  tally1()  interrupt  3
                        {
                               fCnt++;
                         }