2-16.lst

lcd1602液晶显示程序

C51 COMPILER V8.05a   2_16                                                                 09/29/2007 14:40:09 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE 2_16
OBJECT MODULE PLACED IN 2-16.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 2-16.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include"reg51.h"
   2          #include"address.h"
   3          
   4          #define uchar unsigned char
   5          void delay();
   6          void initlcd();
   7          void printf(const uchar *buff,uchar n);
   8          void printscreen(const uchar *str1,const uchar *str2);
   9          void printtext(uchar code *str);
  10          //内部函数
  11          void delay()
  12          {
  13   1       while(LCDIACOM&0x80);  //判断LCD是否忙
  14   1      }
  15          
  16          //LCD初始化（外部函数）
  17          void initlcd()
  18          {
  19   1       LCDICOM=0x01;delay();
  20   1       LCDICOM=0x38;delay();
  21   1       LCDICOM=0x0F;delay();
  22   1       LCDICOM=0x06;delay();
  23   1       LCDICOM=0x01;delay();
  24   1       LCDICOM=0x80;delay();
  25   1      }
  26          //向LCD第一行发送n个字符 （外部函数）
  27          void printf(const uchar *buff,uchar n)
  28          {
  29   1       LCDICOM=0x80;delay();//第一行
  30   1       while(n--)
  31   1       {
  32   2        if(!(*buff)) LCDIDATA=' ';
  33   2        else          LCDIDATA=*buff++;
  34   2        delay();
  35   2      
  36   2       }                
  37   1      }
  38          //向LCD第一行写str1,向LCD第二行写str2  （外部函数）
  39          void printscreen(const uchar *str1,const uchar *str2)
  40          {
  41   1       LCDICOM=0x01;delay();
  42   1       LCDICOM=0x80;delay();//第一行回车，清零
  43   1       LCDIDATA=*str1; delay();
  44   1       while(*++str1) LCDIDATA=*str1; delay();
  45   1      
  46   1      
  47   1       LCDICOM=0xC0;delay();//第二行回车，清零
  48   1       LCDIDATA=*str2; delay();
  49   1       while(*++str2) LCDIDATA=*str2; delay();
  50   1      
  51   1      }
  52          //向LCD发送一串字符     （外部函数）
  53          void printtext(uchar code *str)
  54          {
  55   1       uchar y,i=16;
C51 COMPILER V8.05a   2_16                                                                 09/29/2007 14:40:09 PAGE 2   

  56   1       unsigned int x;
  57   1       while(1)
  58   1       {
  59   2       LCDICOM=0x01;delay();
  60   2       LCDICOM=0x80;delay();//回车，清零
  61   2       while(*str){LCDIDATA=*str++;delay();if(--i==0)break;}
  62   2       i=16;
  63   2       LCDICOM=0xC0;delay();//回车，清零
  64   2       while(*str){LCDIDATA=*str++;delay();if(--i==0)break;}
  65   2       i=16;
  66   2       for(x=1000;x!=0;x--)for(y=200;y!=0;y--);
  67   2       if(!(*str))return;
  68   2       }
  69   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    347    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       9
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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