1602.lst

这个是1602液晶的代码

C51 COMPILER V7.50   1602                                                                  09/08/2006 21:35:56 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE 1602
OBJECT MODULE PLACED IN 1602.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 1602.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /************************************************************************************/
   2          /*     程序名：LCM1602液晶显示代码                                                  */
   3          /*                                                                                  */
   4          /*     晶振：12.0 M                                        CPU型号：AT89S52         */
   5          /*                                                                                  */
   6          /*                                                                                  */
   7          /*     功能描述： 1602显示,需将J15（1，2）跳线帽插上                                */
   8          /*                    但是要拔去J2跳线帽?                                                   */
   9          /*                                                                                  */
  10          /*     http://www.mculover.net                                                      */
  11          /*     http://www.mculover.net/bbs                                                  */
  12          /*                                                                                                                                                      */
  13          /*                                                                                  */
  14          /*                                                湘灵电子工作室 版权所有           */     
  15          /*                                                         2006-03-20               */
  16          /************************************************************************************/ 
  17          
  18          #include <reg51.h>
  19          
  20          #define  Lcd_Data  P0    //定义数据端口
  21          
  22          sbit  RS = P2 ^ 0;  //定义和LCM的连接端口
  23          sbit  RW = P2 ^ 1;
  24          sbit  E = P2 ^ 2;
  25          sbit  Busy = P0 ^ 7;
  26          
  27          unsigned char code welcome[] = {"Welcome to :    "};
  28          unsigned char code website[] = {"www.mculover.net"};
  29          unsigned char code designed[]={"Designed By:"};
  30          unsigned char code whomi[]={"whoami"};
  31          
  32          /******************************************************************************/
  33          void Delay(unsigned char t)//延时子程序，延时 1MS*t S
  34          {
  35   1              unsigned char a;
  36   1              while(--t != 0)
  37   1              {
  38   2                      for(a = 0; a < 125; a++);
  39   2              }
  40   1      }
  41          
  42          /******************************************************************************/
  43          void Read_Busy(void)//读忙信号判断
  44          {
  45   1              do{
  46   2                      Lcd_Data = 0xff;
  47   2                      RS = 0;
  48   2                      RW = 1;
  49   2                      E = 0;
  50   2                      Delay(2);
  51   2                      E = 1;
  52   2                }while(Busy);
  53   1      }
  54          
  55          /******************************************************************************/ 
C51 COMPILER V7.50   1602                                                                  09/08/2006 21:35:56 PAGE 2   

  56          void Write_Comm(unsigned char lcdcomm) //写指令函数
  57          {       
  58   1              Lcd_Data = lcdcomm;
  59   1              RS = 0;
  60   1              RW = 0;
  61   1              E = 0;
  62   1              Read_Busy();
  63   1              E = 1;
  64   1      }
  65          
  66          /******************************************************************************/
  67          void Write_Data(unsigned char lcddata)//写数据函数
  68          {       
  69   1              Lcd_Data = lcddata;
  70   1              RS = 1;
  71   1              RW = 0;
  72   1              E = 0;
  73   1              Read_Busy();
  74   1              E = 1;
  75   1      }
  76          
  77          /******************************************************************************/
  78          void Init_LCD(void)//初始化LCD
  79          {
  80   1              Delay(400);   //稍微延时，等待LCM进入工作状态
  81   1              Write_Comm(0x01);//清显示
  82   1      //      Write_Comm(0x02);//光标归位
  83   1              Write_Comm(0x38);//8位2行5*8
  84   1              Write_Comm(0x06);//文字不动，光标右移
  85   1              Write_Comm(0x0c);//显示开/关，光标开闪烁开
  86   1      //      Write_Comm(0x18);//左移
  87   1      }
  88          
  89          /******************************************************************************/
  90          void main(void)//主函数
  91          {
  92   1              unsigned char i;
  93   1      
  94   1              Init_LCD(); //初始化 LCM
  95   1      
  96   1              Write_Comm(0x80);//写入"welcome to"首地址(第一行）
  97   1      
  98   1              for(i=0;i<16;i++)
  99   1              {
 100   2                      Write_Data( welcome[i] );//显示welcometo字样
 101   2              }
 102   1      
 103   1              Write_Comm(0xc0);//写入"web"首地址（第2行）
 104   1      
 105   1              for(i=0;i<16;i++)
 106   1              {
 107   2                      Write_Data( website[i] );//显示http;//www.mculover.net
 108   2              }
 109   1      
 110   1              while(1)
 111   1              {
 112   2                      ;
 113   2              }
 114   1      }
 115           


C51 COMPILER V7.50   1602                                                                  09/08/2006 21:35:56 PAGE 3   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    134    ----
   CONSTANT SIZE    =     54    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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