lcd.lst

一个步进电机控制程序

C51 COMPILER V7.02a   LCD                                                                  07/10/2007 16:25:36 PAGE 1   


C51 COMPILER V7.02a, COMPILATION OF MODULE LCD
OBJECT MODULE PLACED IN lcd.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE lcd.c ROM(COMPACT) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <REG52.H>
   2          #include <lcd1602.h>
   3          
   4          
   5          void delay1(uchar i)
   6          {
   7   1        while(--i);
   8   1      }
   9          
  10          
  11          void CheckBusy()
  12            {  uchar a;
  13   1              while(1)
  14   1                {
  15   2                      Enable=0;
  16   2                      Rw=1;
  17   2                      Rs=0;
  18   2                      Enable=1;
  19   2                      a=DB;
  20   2                      delay1(3);
  21   2                      Enable=0;
  22   2                      if((a&0x80)==0)break;
  23   2                }
  24   1      
  25   1        }
  26          
  27          
  28          void WriteInstruction(uchar ins)
  29            {
  30   1              CheckBusy();
  31   1              Enable=0;
  32   1              Rs=0;
  33   1              Rw=0;
  34   1              Enable=1;
  35   1              DB=ins;
  36   1              delay1(3);
  37   1              Enable=0;
  38   1        }
  39          
  40          void WriteLCDData(uchar *a)
  41            { 
  42   1          while(*(a))
  43   1            {
  44   2                  CheckBusy();
  45   2                  Enable=0;
  46   2                  Rs=1;
  47   2                  Rw=0;
  48   2                  Enable=1;
  49   2                  DB=*a;
  50   2              delay1(3);
  51   2              Enable=0;
  52   2              delay1(2);a++;
  53   2            }
  54   1        }
  55          
C51 COMPILER V7.02a   LCD                                                                  07/10/2007 16:25:36 PAGE 2   

  56          void Cls()
  57            {
  58   1              WriteInstruction(1);
  59   1        }
  60          
  61          void Initial()
  62            {
  63   1              WriteInstruction(0x38);    //rs rw      7       6       5                       4                               3                       2               1       0       
  64   1              WriteInstruction(0x0c);    //0  0       0       0       1                       dl                              n                       f               *       *
  65   1              WriteInstruction(0x6);     //           功能识别码      / 长度，1=8,0=4  /行数1=2||4,0=1        点阵    
  66   1        }
  67                                                                  //                      0       0       0                       0                               1                       D               C       B
  68                                                          //                      ON/OFF          及                      光标    识别码          1=显字符 光标   1=光标闪
  69          
  70                                                                  //                      0       0       0                       0                               0                       1               I/D                     S               
  71                                                                  //                      模              式              指              令              识              别              码      1=AC+1光标右移  全移
  72          void LCD_Write(uchar x,uchar y,uchar *a)
  73          {unsigned char address;
  74   1          if (y == 0) address = 0x80 + x;
  75   1          else 
  76   1             address = 0xc0 + x;
  77   1          WriteInstruction(address);
  78   1          WriteLCDData(a);
  79   1              }
  80                  
  81          /*main()
  82            { uchar *a="But to see her" ;
  83                  Initial();
  84                  WriteInstruction(0x81);
  85                  WriteLCDData(a);
  86              WriteInstruction(0xc1);
  87              a="was to love her";
  88                  WriteLCDData(a);
  89              delay();
  90              Cls();
  91              LCD_Write(3,0,"this is a test!");
  92              WriteInstruction(0x81);
  93                  a="Love but her";
  94                  WriteLCDData(a);
  95                 WriteInstruction(0xc0);
  96                 a="And love forever!";
  97                          WriteLCDData(a);
  98                      a=" "  ;
  99                      delay();
 100                          WriteLCDData(a);
 101                  while(1){  
 102                  }
 103            }
 104          
 105          */
 106          
 107          
 108          
 109          
 110          
 111          
 112          
 113          
 114          
 115          
 116          
 117          
C51 COMPILER V7.02a   LCD                                                                  07/10/2007 16:25:36 PAGE 3   

 118          
 119          
 120          
 121          
 122          
 123          
 124          
 125          
 126          
 127          
 128          
 129          
 130          
 131          
 132          
 133          
 134          
 135          
 136          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    132    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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