addsub.lst

来自「单片机开发板源码 适合初学者 第四部分 字符型LCD显示1-2」· LST 代码 · 共 151 行

C51 COMPILER V7.06   ADDSUB                                                                09/13/2007 02:07:09 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE ADDSUB
OBJECT MODULE PLACED IN ADDSUB.OBJ
COMPILER INVOKED BY: C:\tools\Keil\C51\BIN\C51.EXE ADDSUB.C BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*实验名称：按加减键实现内部加减 0.01
   2            功能：数码显示0.20---2.00
   3            作者：http://www.mcuprog.com
   4                  05-02-01
   5          */
   6          #include <reg51.h>
   7          //LCD的口线
   8          sbit E=P2^2;
   9          sbit RW=P2^1;
  10          sbit RS=P2^0;   
  11          unsigned char dpbl,ledbai,ledshi,ledge,keytime;
  12          unsigned char bdata myflag;
  13          sbit keybit = myflag^0;
  14          
  15          void time0(void);
  16          void keyscan(void);
  17          void Delay(unsigned int t);
  18          void SendCommandByte(unsigned char ch);
  19          void SendDataByte(unsigned char ch);
  20          void InitLcd(void);
  21          void dispdpbl(void);
  22          
  23          void main(void)
  24          {
  25   1              InitLcd();
  26   1              myflag=0x00;
  27   1              dpbl=20;
  28   1              keytime=4;              //20MS扫一次按键
  29   1              SendCommandByte(0x80);
  30   1              Delay(2);
  31   1              SendDataByte('S');
  32   1              SendDataByte('U');
  33   1              SendDataByte('M');
  34   1              SendDataByte(':');
  35   1              TH0=0xee;               //定时5MS
  36   1              TL0=0x00;
  37   1              TMOD=0x01;
  38   1              TR0=1;
  39   1              IE=0x82;
  40   1              while(1)
  41   1              {}      
  42   1      }       
  43          
  44          void time0(void) interrupt 1
  45          {
  46   1              TH0=0xee;
  47   1              TL0=0x00;
  48   1              if(keytime--==0)
  49   1              {keytime=0x04;P1=0xff;keyscan();
  50   2              ledbai=(dpbl/100)|0x30;
  51   2              ledshi=((dpbl%100)/10)|0x30;
  52   2              ledge=(dpbl%10)|0x30;
  53   2              dispdpbl();
  54   2              }
  55   1      }  
C51 COMPILER V7.06   ADDSUB                                                                09/13/2007 02:07:09 PAGE 2   

  56          
  57          void keyscan(void)
  58          {
  59   1              if(P1==0xfe)
  60   1              {
  61   2                      if(keybit==0)
  62   2                      {keybit=1;dpbl++;if(dpbl>200){dpbl=20;}}
  63   2              }
  64   1              else
  65   1              {
  66   2                      if(P1==0xfd)
  67   2                      {
  68   3                              if(keybit==0)
  69   3                              {keybit=1;dpbl--;if(dpbl<20){dpbl=200;}}
  70   3                      }
  71   2                      else
  72   2                      {
  73   3                              if(P1==0xff){keybit=0;}
  74   3                      }
  75   2              }
  76   1              P1=0xff;
  77   1      }
  78          
  79          void Delay(unsigned int t)   // delay 40us
  80          {
  81   1       for(;t!=0;t--) ;
  82   1      }
  83          //=============================================
  84          void SendCommandByte(unsigned char ch)
  85          {
  86   1         RS=0;
  87   1         RW=0;
  88   1         P0=ch;
  89   1         E=1;
  90   1          Delay(1);
  91   1         E=0;
  92   1         Delay(100);  //delay 40us
  93   1      }
  94          //-------------------------------------------------------
  95          void SendDataByte(unsigned char ch)
  96          {  RS=1;
  97   1         RW=0;
  98   1         P0=ch;
  99   1         E=1;
 100   1             Delay(1);
 101   1         E=0;
 102   1         Delay(100); //delay 40us
 103   1      }
 104          //-------------------------------------------------
 105          void InitLcd(void)
 106          {SendCommandByte(0x30);
 107   1       SendCommandByte(0x30);
 108   1       SendCommandByte(0x30);
 109   1       SendCommandByte(0x38); //设置工作方式
 110   1       SendCommandByte(0x0c); //显示状态设置
 111   1       SendCommandByte(0x01); //清屏
 112   1       SendCommandByte(0x06); //输入方式设置
 113   1      }
 114          
 115          void dispdpbl(void)
 116          {
 117   1              SendCommandByte(0x85);
C51 COMPILER V7.06   ADDSUB                                                                09/13/2007 02:07:09 PAGE 3   

 118   1              SendDataByte(ledbai);
 119   1              SendDataByte('.');
 120   1              SendDataByte(ledshi);
 121   1              SendDataByte(ledge);
 122   1              
 123   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    348    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      6    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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