lcd.lst

这是一个课程设计---数字电压表基于MCS51和AD0809的源码

C51 COMPILER V8.09   LCD                                                                   07/03/2008 12:47:18 PAGE 1   


C51 COMPILER V8.09, COMPILATION OF MODULE LCD
OBJECT MODULE PLACED IN lcd.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE lcd.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          #include"intrins.h"
   3          #define uchar unsigned char
   4          #define uint unsigned int
   5          #define nop _nop_()
   6          #define cycle 4000
   7          #define cycle1 400
   8          
   9          #define db0_db7 P1
  10          static const uchar code table[]={'v','o','l','t','a','g','e','='};
  11          static const uchar code str[]={" *zhou xiao*"};
  12          
  13          uint data volt[6]={0x30,'.',0x30,0x30,0x30,0x30};
  14          uchar xdata cs0809 _at_ 0xfeff;
  15          
  16          sbit RS=P2^1;
  17          sbit RW=P2^2;
  18          sbit E=P2^3;
  19          uint counti;
  20          void init();
  21          void write(uchar tempdata);
  22          void writeddr(uchar tempdata);
  23          void checkbusy();
  24          void delay(uint n);
  25          void display();
  26          void displaya();
  27          void main(void)
  28          {
  29   1      init();
  30   1      displaya();
  31   1      TMOD=0x11;
  32   1      TH0=(65536-cycle)/256;
  33   1      TL0=(65536-cycle)%256;
  34   1      TH1=(65536-cycle1)/256;
  35   1      TL1=(65536-cycle1)%256;
  36   1      TCON=0x55;
  37   1      IE=0x8a;
  38   1      IP=0x04;
  39   1      counti=0;
  40   1      while(1);
  41   1      display();
  42   1      
  43   1      }
  44          
  45          void display()
  46          {  uint a;
  47   1      write(0x8a);//显示位置
  48   1      for(a=0;a<6;a++)
  49   1      writeddr(volt[a]);
  50   1      }
  51          void displaya()
  52          {
  53   1      uint b;
  54   1      //write(0x01);
  55   1      //write(0x06);
C51 COMPILER V8.09   LCD                                                                   07/03/2008 12:47:18 PAGE 2   

  56   1      //write(0x80);
  57   1      for(b=0;b<8;b++)
  58   1      writeddr(table[b]);
  59   1      display();
  60   1      }
  61          
  62          void delay(uint n)
  63          {uint i;
  64   1      for(i=0;i<n;i++)
  65   1      {i=i;}
  66   1      }
  67          void init()
  68          {delay(500);
  69   1      write(0x38);//显示模式5*7
  70   1      write(0x01);//光标复位 
  71   1      write(0x06);//光标右移
  72   1      write(0x0C);
  73   1      }
  74          
  75          void write(uchar tempdata)
  76          {checkbusy();
  77   1      db0_db7=tempdata;
  78   1      E=1;
  79   1      nop;
  80   1      E=0;
  81   1      nop;
  82   1      
  83   1      }
  84          void writeddr(uchar tempdata)
  85          {        
  86   1      checkbusy();
  87   1      RS=1;
  88   1      E=1;
  89   1      db0_db7=tempdata;
  90   1      
  91   1      
  92   1      nop;
  93   1      E=0;
  94   1      nop;
  95   1      }
  96          void checkbusy()
  97          {
  98   1      uchar temp;
  99   1      RS=0; 
 100   1      RW=1;
 101   1      do
 102   1      {db0_db7=0xff;
 103   2      E=1;
 104   2      delay(50);
 105   2      nop;
 106   2      temp=db0_db7;
 107   2      E=0;
 108   2      }while((temp&0x80)==0x80);
 109   1      RW=0;
 110   1      }
 111          void service_int0() interrupt 1 using 2
 112          {
 113   1      static uchar s_counter;
 114   1      if(++s_counter>=7)
 115   1      {
 116   2      if(counti<=11)
 117   2      {write(0xc0+counti);
C51 COMPILER V8.09   LCD                                                                   07/03/2008 12:47:18 PAGE 3   

 118   3      writeddr(str[counti]);
 119   3      counti++;
 120   3      }
 121   2      else if(counti>11&&counti<28)
 122   2      {write(0xc0+counti-16);
 123   3      writeddr(0);
 124   3      counti++;
 125   3      }
 126   2      else
 127   2      {counti=0;
 128   3      write(0xC0);
 129   3      }
 130   2      }
 131   1      TH0=(65536-cycle)/256;
 132   1      TL0=(65536-cycle)%256;
 133   1      }
 134          void service_int1() interrupt 3 using 3
 135          {uint vod; 
 136   1      P2=0xFE;
 137   1      P3=0xbf;
 138   1      P0=0;
 139   1      P3=0xff;
 140   1      //cs0809=0;
 141   1      IT1=1;
 142   1      EX1=1;
 143   1      //delay(200);
 144   1      //vod=cs0809;
 145   1      //vod*=196;
 146   1      //volt[5]=((char)(vod%10)+0x30);
 147   1      //volt[4]=((char)(vod%100)/10+0x30);
 148   1      //volt[3]=((char)(vod%1000)/100+0x30);
 149   1      //volt[2]=((char)((vod%10000)/1000)+0x30);
 150   1      //volt[0]=((char)(vod/10000)+0x30);
 151   1      //display();
 152   1      TH1=(65536-cycle1)/256;
 153   1      TL1=(65536-cycle1)%256;
 154   1      }
*** WARNING C280 IN LINE 135 OF LCD.C: 'vod': unreferenced local variable
 155          void service_int2() interrupt 2 
 156          {uint vod;
 157   1      P2=0xFE;
 158   1      P3=0x7f;
 159   1      P0=0xff;
 160   1      vod=P0;
 161   1      P3=0xff;
 162   1      //vod=cs0809;
 163   1      vod*=196;
 164   1      volt[0]=((vod/10000)+0x30);
 165   1      volt[2]=(((vod%10000)/1000)+0x30);
 166   1      volt[3]=((vod%1000)/100+0x30);
 167   1      volt[4]=((vod%100)/10+0x30);
 168   1      volt[5]=((vod%10)+0x30);
 169   1      display();
 170   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    599    ----
   CONSTANT SIZE    =     21    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     15       8
C51 COMPILER V8.09   LCD                                                                   07/03/2008 12:47:18 PAGE 4   

   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  1 WARNING(S),  0 ERROR(S)