1602.lst

1602 的驱动程序 很完整。通过KEIL C 编译在ROTUES 上用AT89C51仿真通过。

C51 COMPILER V7.20   1602                                                                  06/19/2006 11:11:51 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE 1602
OBJECT MODULE PLACED IN 1602.OBJ
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE 1602.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "reg52.h"
   2          #include "intrins.h"
   3          
   4          #define uchar unsigned char
   5          #define uint unsigned int
   6          
   7          sbit RS=P3^7;
   8          sbit RW=P3^6;
   9          sbit EN=P3^5;
  10          static void delay(uint j);
  11          //************************
  12          void initlcd();     /*LCD初始化*/
  13          void writecom(uchar c);
  14          void writedata(uchar c);
  15          void showchar(uchar pos,uchar c); /*显示一个字符 pos为位置 范围0-31 c为字符*/
  16          void showstring(uchar line,uchar *ptr);/*显示一行字符 line为行号 范围0，1 *ptr为首地址*/
  17          void disp_1602(uchar line,uchar *add);/*显示一行数字line为行号 范围0，1  *add为首地址*/
  18          code uchar disp1[16]={0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5};
  19          code uchar disp2[]="ABCDEFGHIJKLMNOP";
  20          //************************
  21          void writecom(uchar c)
  22          { delay(100);
  23   1        EN=0;
  24   1        RS=0;
  25   1        RW=0;
  26   1        _nop_();
  27   1        P0=c;
  28   1        EN=1;
  29   1        _nop_();
  30   1        EN=0;
  31   1      }
  32          //*************************
  33          void writedata(uchar c)
  34          { delay(100);
  35   1        EN=0;
  36   1        RS=1;
  37   1        RW=0;
  38   1        _nop_();
  39   1        P0=c;
  40   1        EN=1;
  41   1        _nop_();
  42   1        EN=0;
  43   1        RS=1;
  44   1      }
  45          //*****************
  46          void showchar(uchar pos,uchar c)
  47          { uchar p;
  48   1        if(pos>=0x10)
  49   1           p=pos+0xb0;
  50   1        else
  51   1           p=pos+0x80;
  52   1        writecom(p);
  53   1      
  54   1        writedata(c);
  55   1       }
C51 COMPILER V7.20   1602                                                                  06/19/2006 11:11:51 PAGE 2   

  56          //****************************
  57          void showstring(uchar line,char *ptr)
  58          { uchar l,i;
  59   1        l=line<<4;
  60   1        for(i=0;i<16;i++)
  61   1            {showchar(l++,*(ptr+i));}
  62   1      }
  63          //***************************
  64          void initlcd()
  65          { 
  66   1        writecom(0x38);
  67   1        writecom(0x38);
  68   1        writecom(0x06);
  69   1        writecom(0x0c);
  70   1        writecom(0x01);
  71   1      }
  72          //*********************
  73          void delay(uint j)
  74          { 
  75   1        while(j--);
  76   1      }
  77          //***************************************
  78          void disp_1602(uchar line,uchar *add)
  79          {
  80   1              uchar k;
  81   1              for(k=0;k<16;k++)
  82   1                      showchar(16*line+k,*(add+k)+0x30);
  83   1      }
  84          //*************************
  85          void delayms(uint j)
  86          {
  87   1              uchar i;
  88   1              while(j--)
  89   1              {
  90   2                      for(i=0;i<125;i++)
  91   2                              ;
  92   2              }
  93   1      }
  94          //************************
  95          main()
  96          {
  97   1              delayms(1);
  98   1              initlcd();  
  99   1              disp_1602(0,disp1);
 100   1              showstring(1,disp2);
 101   1              while(1)
 102   1                ;
 103   1      }
 104          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    271    ----
   CONSTANT SIZE    =     33    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      14
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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