C51 COMPILER V8.05a   123456                                                               03/21/2008 08:15:32 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE 123456
OBJECT MODULE PLACED IN 123456.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE 123456.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //單片機脈搏測量儀源程序
   2          #include <reg51.h>
   3          unsigned char i,j,m,t,DelayTime,DispBuf[3];
   4          unsigned int n,mb;
   5          unsigned char code DispTab[10]={0x81,0xcf,0x92,0x86,0xcc,0xa4,0xa0,0x8f,0x80,0x84};//字形碼0~9
   6          sbit P3_0=P3^0;
   7          sbit P3_3=P3^3;
   8          sbit P3_4=P3^4;
   9          sbit P3_5=P3^5;
  10          void delay(DelayTime);
  11          
  12          void Timer0Init(void)  //定時器初始化
  13          {
  14   1              TMOD=0x01;      //定時器T0工作于方式1
  15   1              TH0=0xec;
  16   1              TL0=0x78;       //T0定時時間為5ms
  17   1              IE=0X83;        //開中斷
  18   1              IT0=1;          //外部中斷0為邊沿觸發方式
  19   1              TR0=1;          //開定時器T0 
  20   1      }
  21          
  22          void delay(DelayTime)//延時子程序
  23          {
  24   1              for(;DelayTime>0;DelayTime--)
  25   1              {
  26   2                      for(i=0;i<250;i++)
  27   2                              ;
  28   2              }
  29   1      }
  30          
  31          external0() interrupt 0//外部中斷服務程序
  32          {
  33   1              P3_0=0;          //點亮指示燈
  34   1              if(n==0)
  35   1                      mb=0;
  36   1              else
  37   1                      mb=12000/n;      //計算每分鐘脈搏數
  38   1              DispBuf[2]=mb%10;//取個位數
  39   1              mb=mb/10;
  40   1              DispBuf[1]=mb%10;//取十位數
  41   1              DispBuf[0]=mb/10;//取百位數
  42   1              n=0;
  43   1              //j=1;
  44   1              //P3=P3|0x38;   
  45   1              //P3_0=1;      
  46   1      }
  47          Timer0() interrupt 1//定時中斷服務程序
  48          {       
  49   1              TH0=0xec;
  50   1              TL0=0x78;
  51   1              n++;
  52   1              if(n==2000)//10秒鐘測不到心率,n復位
  53   1                      n=0;
  54   1      }
  55          
C51 COMPILER V8.05a   123456                                                               03/21/2008 08:15:32 PAGE 2   

  56          
  57          void Disp(void)//數碼管顯示函數
  58          {
  59   1              t=DispBuf[2];
  60   1              m=DispTab[t];
  61   1              P1=m;
  62   1              P3_3=0 ;
  63   1              delay(2);
  64   1              P3_3=1;
  65   1      
  66   1              t=DispBuf[1];
  67   1              m=DispTab[t];
  68   1              P1=m;
  69   1              P3_4=0;
  70   1              delay(2);
  71   1              P3_4=1;
  72   1      
  73   1              t=DispBuf[0];
  74   1              m=DispTab[t];
  75   1              P1=m;
  76   1              P3_5=0;
  77   1              delay(2);
  78   1              P3_5=1;
  79   1      }
  80          
  81          void main(void) //主程序
  82          {       
  83   1              Timer0Init();
  84   1              while(1)
  85   1              {
  86   2                      if(P3_0==0)
  87   2                      {
  88   3                              delay(100);
  89   3                              P3_0=1;
  90   3                      }
  91   2                      Disp(); 
  92   2              }
  93   1      }
  94          
  95          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    283    ----
   CONSTANT SIZE    =     10    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     12    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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