C51 COMPILER V7.06   LCD                                                                   12/17/2006 14:56:13 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE LCD
OBJECT MODULE PLACED IN LCD.OBJ
COMPILER INVOKED BY: E:\My Electronic\Tools\Design tools\keil7.06\C51\BIN\C51.EXE LCD.c LARGE OPTIMIZE(SIZE)

stmt level    source

   1          #include <REG52.H>
   2          
   3          #ifndef uchar
   4          #define uint unsigned int
   5          #define uchar unsigned char
   6          #endif
   7          
   8          #define         LCD_DATA        P0
   9          
  10          sbit RS=P2^7;
  11          sbit RW=P2^6;
  12          sbit EN=P2^5;
  13          sbit RST=P2^4;
  14          void delay_us(unsigned char us);
  15          void delay_ms(unsigned int ms);
  16          
  17          void LCD_Busy_Check()                  //等待LCD空閑
  18          {
  19   1              LCD_DATA &=~0x80;
  20   1              EN=0;
  21   1              RS=0;
  22   1              RW=1;                 //RW=1
  23   1              EN=1; 
  24   1              while (!(LCD_DATA&0x80)==0);
  25   1              EN=0;
  26   1              LCD_DATA |= 0xff;
  27   1      }
  28          
  29          void LCD_write(uchar wdat,uchar mode)
  30          {
  31   1      
  32   1              LCD_Busy_Check();
  33   1              LCD_DATA |= 0xff;
  34   1              EN=0;    //EN=0
  35   1              RS=mode;  //RS=1    
  36   1         RW=0;     //RW=0
  37   1              EN=1;
  38   1              LCD_DATA &= wdat;   //send 8bit 
  39   1              EN=0;
  40   1              RW=1;
  41   1              RS=1;
  42   1      }
  43          
  44          void LCD_set_position( uchar x, uchar y )
  45          {
  46   1          uchar address;
  47   1              switch(y)
  48   1              {
  49   2                      case 0: 
  50   2                         address = 0x80 + x;
  51   2                          break; 
  52   2                  case 1: 
  53   2                          address = 0x90 + x;
  54   2                              break; 
  55   2                      case 2: 
C51 COMPILER V7.06   LCD                                                                   12/17/2006 14:56:13 PAGE 2   

  56   2                              address = 0x88 + x;
  57   2                              break; 
  58   2                  case 3: 
  59   2                              address = 0x98 + x;
  60   2                              break; 
  61   2                      default:address = 0x80 + x;
  62   2              }
  63   1          LCD_write( address, 0 );
  64   1      }
  65          
  66          void LCD_write_string(uchar X,uchar Y,uchar *s)
  67          {
  68   1              LCD_set_position( X, Y );
  69   1          while (*s) 
  70   1          {
  71   2              LCD_write(*s,1);
  72   2                 s++;
  73   2              }
  74   1      }
  75            
  76          
  77          void LCD_set_pic_position(unsigned char x,unsigned char y)
  78          {
  79   1              if(y>31) 
  80   1              {
  81   2                      x+=0x88;
  82   2                      y=(y-32)+0x80;
  83   2              }
  84   1              else
  85   1              {
  86   2                      x+=0x80;
  87   2                      y+=0x80;
  88   2              }
  89   1              LCD_write(0x34,0);
  90   1              LCD_write(y,0);
  91   1              LCD_write(x,0);
  92   1              LCD_write(0x30,0);
  93   1      }
  94          
  95          
  96          void LCD_Convert(unsigned char x,unsigned char y,unsigned char weith,unsigned char mode)                //反白
  97          {
  98   1              unsigned char flag=0;
  99   1              unsigned char px=0;
 100   1              unsigned char py=0;     
 101   1              if (mode) mode=0xff;
 102   1              if(x%2) 
 103   1              {
 104   2                      flag=1;
 105   2              }
 106   1              x/=2;
 107   1              for(py=0;py<16;py++)
 108   1              {
 109   2                      LCD_set_pic_position(x,y*16+py);
 110   2                      if(flag) LCD_write(0,1);
 111   2                      for (px=weith;px>0;px--)
 112   2                      {
 113   3                              LCD_write (mode,1);
 114   3                      }
 115   2              }
 116   1              LCD_write(0x36,0);
 117   1              LCD_write(0x30,0);
C51 COMPILER V7.06   LCD                                                                   12/17/2006 14:56:13 PAGE 3   

 118   1      }
 119          
 120          void LCD_clr_pic()
 121          {
 122   1              unsigned char i;
 123   1              for(i=0;i<4;i++) LCD_Convert(0,i,16,0);
 124   1      }
 125          
 126          
 127          void LCD_init(void)
 128          {
 129   1              RST=0;
 130   1              delay_us(50);
 131   1              RST=1;
 132   1              delay_us(50);
 133   1          LCD_write(0x01,0);      //顯示清屏
 134   1              delay_ms(30);
 135   1               LCD_write(0x0c,0);      //顯示開,不顯示光標(biāo)
 136   1              delay_ms(30);
 137   1          LCD_write(0x80,0);      //顯示光標(biāo)移動(dòng)設(shè)置
 138   1              delay_ms(30);
 139   1              LCD_clr_pic();
 140   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    391    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----       6
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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