voltmeter.lst

数字电压表,可模拟进行电压测量,用数码管显示电压值,有图和程序

C51 COMPILER V8.02   VOLTMETER                                                             08/30/2007 15:01:08 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE VOLTMETER
OBJECT MODULE PLACED IN VOLTMETER.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE VOLTMETER.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <AT89X52.H>  
   2          unsigned char code dispbitcode[]={0xfe,0xfd,0xfb,0xf7, 0xef,0xdf,0xbf,0x7f}; 
   3          unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66, 0x6d,0x7d,0x07,0x7f,0x6f,0x00}; 
   4          unsigned char dispbuf[8]={10,10,10,10,10,0,0,0}; 
   5          unsigned char dispcount; 
   6          unsigned char getdata; 
   7          unsigned int temp; 
   8          long int  i; 
   9          unsigned int R1; 
  10          
  11          sbit ST=P3^0; 
  12          sbit OE=P3^1; 
  13          sbit EOC=P3^2; 
  14          sbit CLK=P3^3; 
  15            
  16          void main(void) 
  17          { 
  18   1        ST=0; 
  19   1        OE=0; 
  20   1        ET0=1; 
  21   1        ET1=1; 
  22   1        EA=1; 
  23   1        TMOD=0x12; 
  24   1        TH0=216; 
  25   1        TL0=216; 
  26   1        TH1=(65536-5000)/256; 
  27   1        TL1=(65536-5000)%256; 
  28   1        TR1=1; 
  29   1        TR0=1; 
  30   1        ST=1; 
  31   1        ST=0; 
  32   1        while(1) 
  33   1          { 
  34   2            if(EOC==1) 
  35   2              { 
  36   3                OE=1; 
  37   3                getdata=P0; 
  38   3                OE=0;
  39   3                          i=getdata*196;
  40   3                              dispbuf[5]=i/10000; 
  41   3                              i=i%10000; 
  42   3                              dispbuf[6]=i/1000;
  43   3                              i=i%1000; 
  44   3                              dispbuf[7]=i/100;          
  45   3                ST=1; 
  46   3                ST=0; 
  47   3              } 
  48   2          } 
  49   1      } 
  50            
  51          void t0(void) interrupt 1 using 0           //定时器0  中断服务
  52          { 
  53   1        CLK=~CLK; 
  54   1      } 
  55            
C51 COMPILER V8.02   VOLTMETER                                                             08/30/2007 15:01:08 PAGE 2   

  56          void t1(void) interrupt 3 using 0          //定时器1  中断服务
  57          { 
  58   1        TH1=(65536-6000)/256; 
  59   1        TL1=(65536-6000)%256; 
  60   1        P2=0xff;
  61   1        P1=dispcode[dispbuf[dispcount]]; 
  62   1        P2=dispbitcode[dispcount]; 
  63   1        if(dispcount==5) 
  64   1          { 
  65   2            P1=P1 | 0x80; 
  66   2          } 
  67   1        dispcount++; 
  68   1        if(dispcount==8) 
  69   1          { 
  70   2            dispcount=0; 
  71   2          }  
  72   1      } 
  73          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    244    ----
   CONSTANT SIZE    =     19    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     18    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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