lcd1602.lst

51edn开发板程序

C51 COMPILER V7.50   LCD1602                                                               06/02/2008 20:59:10 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE LCD1602
OBJECT MODULE PLACED IN LCD1602.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE LCD1602.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*---------------------------------------------------------------------
   2                                   LCD1602.C文件 LCD1602的函数  
   3            作者：Computer-lov     创建日期:2004.11.12    最后修改日期:2004.11.12
   4            版本：1.0
   5          ----------------------------------------------------------------------*/
   6          #include "at89x52.h"
   7          #include "MyType.h"
   8          #include "lcd1602.h"
   9          
  10          #define LCD_EN P1_2
  11          #define LCD_RS P1_0
  12          #define LCD_RW P1_1
  13          #define LCD_BUSY P0_7
  14          #define LCD_DATA P0
  15          
  16          #ifdef LCD
  17          
  18          void LcdCheckBusy(void)   //检测LCD状态，看它是不是还在忙呢
  19          {
  20   1       while(1)
  21   1        {
  22   2         LCD_EN=0;
  23   2         LCD_RS=0;
  24   2         LCD_RW=1;
  25   2         LCD_DATA=0xFF;
  26   2         LCD_EN=1;
  27   2         if(!LCD_BUSY)break;
  28   2        }
  29   1       LCD_EN=0;
  30   1      }
  31          
  32          void LcdCls(void)          //LCD清屏
  33          {
  34   1       EA=0;
  35   1       LcdCheckBusy();
  36   1       LCD_RS=0;
  37   1       LCD_RW=0;
  38   1       LCD_EN=1;
  39   1       LCD_DATA=1;
  40   1       LCD_EN=0;
  41   1       EA=1;
  42   1      }
  43          
  44          void LcdWriteInstruction(uint8 LcdInstruction)   //写指令到LCD
  45          {
  46   1       EA=0;
  47   1       LcdCheckBusy();
  48   1       LCD_RS=0;
  49   1       LCD_RW=0;
  50   1       LCD_EN=1;
  51   1       LCD_DATA=LcdInstruction;
  52   1       LCD_EN=0;
  53   1       EA=1;
  54   1      }
  55          
C51 COMPILER V7.50   LCD1602                                                               06/02/2008 20:59:10 PAGE 2   

  56          void LcdWriteData(uint8 LcdData)      //输出一个字节数据到LCD
  57          {
  58   1       EA=0;
  59   1       LcdCheckBusy();
  60   1       LCD_RS=1;
  61   1       LCD_RW=0;
  62   1       LCD_EN=1;
  63   1       LCD_DATA=LcdData;
  64   1       LCD_EN=0;
  65   1       EA=1;
  66   1      }
  67           
  68          void LcdSetPosition(uint8 x)            //LCD光标定位到x处
  69          {
  70   1       LcdWriteInstruction(0x80+x);
  71   1      }
  72          
  73          /*void LcdGoHome(void)                         //LCD光标归位
  74          {
  75           LcdWriteInstruction(LCD_GO_HOME);
  76          }*/
  77          /*
  78          void LcdPrintc(uint8 LcdData)          //输出一个字符到LCD
  79          {
  80           LcdWriteData(LcdData);
  81          }*/
  82          
  83          void LcdPrints(uint8 *LcdString)       //输出一个字符串到LCD
  84          {
  85   1       uint8 i=0;
  86   1       while(LcdString[i]!=0x00)
  87   1        {
  88   2         LcdWriteData(LcdString[i]);
  89   2         i++;
  90   2        } 
  91   1      }
  92          
  93          void LcdInit(void)                        //初始化LCD
  94          {
  95   1       LcdWriteInstruction(LCD_AC_AUTO_INCREMENT|LCD_MOVE_DISENABLE);
  96   1       LcdWriteInstruction(LCD_DISPLAY_ON|LCD_CURSOR_OFF);
  97   1       LcdWriteInstruction(LCD_DISPLAY_DOUBLE_LINE);
  98   1       LcdSetPosition(0);
  99   1       LcdCls();
 100   1      }
 101          
 102          #endif


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    134    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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