4_3_2_1位disp.lst

单片机C语言15个实验附有原理图和程序 是我的课程作业 以经过实践验证

C51 COMPILER V7.50   4_3_2_1λDISP                                                         03/14/2006 14:22:24 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE 4_3_2_1λDISP
OBJECT MODULE PLACED IN 4_3_2_1λdisp.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 4_3_2_1λdisp.c ROM(SMALL) BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //4_3_2_1λdisp
   2          #include <stdio.h>
   3          #include <reg51.h>
   4          #include <intrins.h>
   5          #define hi 0x3c
   6          #define lo 0xb0
   7          unsigned  char code ledk[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6D,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0
             -x71,0x00};
   8          unsigned  char t0_count,disp[4];
   9          unsigned int disp_value,a[4]={1,12,123,1234};
  10          sbit P37=P3^7;sbit clk=P0^7;sbit sda=P0^6;               //74LS164
  11          void delay(unsigned int n)
  12          { unsigned int i,j;
  13   1        for(i=0;i<n;i++)
  14   1           for(j=0;j<n;j++)
  15   1             ;}
  16          void shift(unsigned char dx)
  17          {static unsigned char d;
  18   1         unsigned char j=0;
  19   1          d=dx;
  20   1              while(j<8)
  21   1              {if((d&0x80)!=0) sda=1;
  22   2             else  sda=0;
  23   2                 clk=0;clk=1;
  24   2                 d<<=1;j++;}  }
  25          void t0() interrupt 1 
  26           {static unsigned char i;
  27   1       TH0=hi;TL0=lo;t0_count++;
  28   1         if(t0_count==20){t0_count=0;
  29   2                          disp_value=a[i];
  30   2                              i++;if(i>3)i=0;   }   }
  31          void hextodec()
  32           {unsigned int xx;
  33   1        disp[3]=disp_value/1000; xx=disp_value%1000;
  34   1        disp[2]=xx/100;          xx=xx%100;
  35   1        disp[1]=xx/10;           
  36   1        disp[0]=xx%10;   }
  37          void display()
  38          {static unsigned char mask=0x01,i=0;
  39   1         if(disp[3]==0)
  40   1             {if(disp[2]!=0)disp[3]=16;
  41   2                     else if(disp[1]!=0){disp[3]=16;disp[2]=16;}
  42   2                   else {disp[3]=16;disp[2]=16;disp[1]=16;}  }
  43   1               P2=~mask;shift(ledk[disp[i]]);
  44   1               mask=mask<<1;if(mask==0x10)mask=0x01;
  45   1               i++;if(i>3)i=0;
  46   1          }
  47          void main(void)
  48          {TMOD=0x01;TH0=hi;TL0=lo;EA=1;ET0=1;TR0=1;
  49   1       while(1)
  50   1       {hextodec();
  51   2        display();
  52   2        delay(22);}              
  53   1       }
  54          
C51 COMPILER V7.50   4_3_2_1λDISP                                                         03/14/2006 14:22:24 PAGE 2   

  55          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    304    ----
   CONSTANT SIZE    =     17    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     19    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)