lcd.lst

本程序是AD MAX197驱动程序。精度高。

C51 COMPILER V8.02   LCD                                                                   04/09/2007 13:38:51 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE LCD
OBJECT MODULE PLACED IN lcd.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE lcd.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          
   3          unsigned char Status , Data ,Command , i  ;
   4          unsigned  char code max197 []   = "MAX197AD转换 " ;
   5          unsigned  char code shuru  []   = "输入电压:      V";
   6          #define LCD_Data  P0
   7          
   8          
   9          sbit    LCD_RS          =P1^2;
  10          sbit    LCD_E           =P1^0;
  11          sbit    LCD_WR          =P1^1;
  12          
  13          
  14          
  15           LCDBusyWait()                                                  //等待LCD就绪
  16          {
  17   1              unsigned char Status;
  18   1              LCD_RS=0;
  19   1              LCD_WR=1;
  20   1              LCD_Data=0xFF;
  21   1              LCD_E=1;
  22   1              Status=LCD_Data;
  23   1              LCD_E=0;
  24   1              while(Status & 0x80)
  25   1              {
  26   2                      LCD_E=1;
  27   2                      Status=LCD_Data;
  28   2                      LCD_E=0;
  29   2              }
  30   1              LCD_WR=0;
  31   1              return Status;
  32   1      }
  33          
  34           WriteLCD_Data( unsigned char  Data )                   //向LCD写入一个字节的数据
  35          {
  36   1              LCDBusyWait();
  37   1              LCD_RS=1;
  38   1              LCD_Data = Data;
  39   1              LCD_E=1;
  40   1              LCD_E=0;
  41   1      }
  42          
  43           WriteLCD_Command( unsigned char Command )      //向LCD写入一个字节的命令
  44          {  
  45   1              LCDBusyWait();
  46   1              LCD_RS=0;
  47   1              LCD_Data=Command;
  48   1              LCD_E=1;
  49   1              LCD_E=0;
  50   1      }
  51          
  52          lcd_init ()
  53          {
  54   1      
  55   1              unsigned int  i;
C51 COMPILER V8.02   LCD                                                                   04/09/2007 13:38:51 PAGE 2   

  56   1              WriteLCD_Command(0x01);   //清屏
  57   1           for(i=0;i<2000;i++);
  58   1              WriteLCD_Command(0x30);   //功能设置8位界面,
  59   1           for(i=0;i<2000;i++);
  60   1              WriteLCD_Command(0x0C);   //显示开，光、光标关，反白显示
  61   1           for(i=0;i<2000;i++);
  62   1          WriteLCD_Command(0x06);       //DDRAM地址自加
  63   1                 for(i=0;i<2000;i++);
  64   1      }  
  65          
  66          
  67          lcd_display (  unsigned char  display_data[] )
  68          
  69          {  i = 0; 
  70   1         while ( display_data[i] != '\0')
  71   1         {
  72   2           Data = display_data [i] ;
  73   2               WriteLCD_Data(Data) ;
  74   2           i++ ;
  75   2         }
  76   1      }               


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    168    ----
   CONSTANT SIZE    =     31    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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