lcd2.lst

基于C语言的DS18B20温度测量仪

C51 COMPILER V7.50   LCD2                                                                  10/06/2007 20:44:48 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE LCD2
OBJECT MODULE PLACED IN lcd2.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE lcd2.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*-------------------------------------八线lcd1602驱动程序------------------------------------------------
             --*/
   2          #include"lcd2.H"
   3          
   4          void delay (uchar ms)//延时函数
   5          {
   6   1      uchar i;
   7   1      while(ms--)
   8   1      {for(i=0;i<100;i++);  //24m  延时1ms
   9   2      _nop_();
  10   2      _nop_();
  11   2      _nop_();
  12   2      _nop_();
  13   2      _nop_();
  14   2      _nop_();
  15   2      _nop_();
  16   2      _nop_();
  17   2       }
  18   1      }
  19          BOOL lcd_bz(void)//读忙
  20          {
  21   1      BOOL result;
  22   1      rs=0;
  23   1      rw=1;
  24   1      ep=1;
  25   1      delay(1);
  26   1      result=(BOOL)(P1&0x80);
  27   1      ep=0;
  28   1      return result;
  29   1      }
  30          
  31          void lcd_wcmd(uchar cmd) //写指令
  32          {
  33   1      while(lcd_bz());
  34   1      rs=0;
  35   1      rw=0;
  36   1      ep=0;
  37   1      delay(1);
  38   1      P1=cmd;
  39   1      delay(1);
  40   1      ep=1;
  41   1      delay(1);
  42   1      ep=0;
  43   1      }
  44          
  45          void lcd_pos(uchar pos)//设显示位置
  46          {
  47   1       lcd_wcmd(pos |0x80);
  48   1       }
  49          
  50          void lcd_wdat(uchar dat) //写数据
  51           {
  52   1       while(lcd_bz());
  53   1       rs=1;
  54   1       rw=0;
C51 COMPILER V7.50   LCD2                                                                  10/06/2007 20:44:48 PAGE 2   

  55   1       ep=0;
  56   1       P1=dat;
  57   1      delay(1);
  58   1       ep=1;
  59   1      delay(1);
  60   1       ep=0;
  61   1       }
  62          
  63           void lcd_init(void) //初始化
  64           {
  65   1       lcd_wcmd(0x38);
  66   1       delay (10);
  67   1       lcd_wcmd(0x0c);
  68   1       delay(1);
  69   1       lcd_wcmd(0x06);
  70   1       delay(1);
  71   1       lcd_wcmd(0x01);
  72   1       delay(1);
  73   1       }
  74          
  75           void lcd_wchar(uchar x,uchar y,uchar dat)//写字符
  76            { if(y==2)
  77   1          { lcd_pos(x|0x40 );
  78   2                 }
  79   1              if(y==1)
  80   1              { lcd_pos(x);
  81   2                  }
  82   1                lcd_wdat(dat);}
  83           
  84          void lcd_wdata(uchar x,uchar y,uint dat)// 写四位数字
  85            {     uchar ge,shi;
  86   1             //qian=dat/1000;
  87   1                 //bai=(dat/100)%10;
  88   1                 //shi=(dat/10)%10;
  89   1                 //ge=dat%10;
  90   1                 shi=dat/10;
  91   1                 ge=dat%10;
  92   1                  //qian|=0x30;
  93   1                      //bai|=0x30;
  94   1                      shi|=0x30;
  95   1                      ge|=0x30;
  96   1                      //lcd_wchar(x,y,qian);
  97   1                      //lcd_wchar(x+1,y,bai);
  98   1                      //lcd_wchar(x+2,y,shi);
  99   1                      //lcd_wchar(x+3,y,ge);
 100   1                      lcd_wchar(x,y,shi);
 101   1                      lcd_wchar(x+1,y,ge);
 102   1                                 }
 103          
 104                  
 105             


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    228    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----       1
END OF MODULE INFORMATION.

C51 COMPILER V7.50   LCD2                                                                  10/06/2007 20:44:48 PAGE 3   


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