1602lib.lst

基于AT89S52控制芯片的电子万年历程序

C51 COMPILER V7.50   1602LIB                                                               03/19/2009 16:09:24 PAGE 1   


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

line level    source

   1          #include "1602lib.h"
   2          
   3          static void WriteCmd(uchar tempdata);
   4          static void WriteDdr(uchar tempdata);
   5          static void CheckBusy(void);
   6          static void LCD_Delay(uint N);
   7          
   8          void LCD_Delay(uint N)
   9          {
  10   1         uint i;
  11   1         for(i=0;i<N;i++)
  12   1         i=i; 
  13   1      }
  14          
  15          void WriteCmd(uchar tempdata)                       /*写命令*/
  16          {
  17   1        DB0_DB7 = tempdata;
  18   1        RS = 0;
  19   1        RW = 0;
  20   1        E = 0;
  21   1        nop;
  22   1        E = 1;
  23   1        nop;
  24   1        CheckBusy();
  25   1      }
  26          
  27          void WriteDdr(uchar tempdata)                        /*写数据*/
  28          {
  29   1      DB0_DB7 = tempdata;
  30   1        RS = 1;
  31   1        nop;
  32   1        RW = 0;
  33   1        E = 0;
  34   1        nop;
  35   1        E = 1;
  36   1        nop;
  37   1        CheckBusy();                                
  38   1      }
  39          void CheckBusy(void)                              /*查询忙状态*/
  40          {
  41   1          uchar tmp;
  42   1          
  43   1          DB0_DB7 = 0xff;
  44   1          
  45   1          RW = 1;
  46   1          RS = 0;
  47   1          E = 0;
  48   1          nop;
  49   1          E = 1;
  50   1          do
  51   1          {
  52   2              nop;
  53   2            tmp = DB0_DB7;
  54   2          }while((tmp&0X80) == 0X80);
  55   1          RW = 0;
C51 COMPILER V7.50   1602LIB                                                               03/19/2009 16:09:24 PAGE 2   

  56   1      }
  57          
  58          void LCD_init()                                  /*LCD初始化*/
  59          {
  60   1          RS = 0;
  61   1          RW = 0;
  62   1          E = 1;
  63   1          WriteCmd(0x38);
  64   1          LCD_Delay(1000);
  65   1          WriteCmd(0x38);
  66   1          LCD_Delay(1000);
  67   1          WriteCmd(0x38);
  68   1          WriteCmd(0x0f);
  69   1          WriteCmd(0x06);
  70   1          WriteCmd(0x01);
  71   1      }
  72          void DisplayOneChar(uchar X,uchar Y,uchar dat)  /*在指定位置显示一个字符函数*/
  73          {
  74   1          Y&= 0X1;
  75   1          X&= 0XF;                                  /*限制X不能大于15，Y不能大于1*/
  76   1          if(Y)X|= 0x40;                            /*当要显示第二行时地址码+0x40*/
  77   1          X|=0X80;                                  /*算出指令码*/
  78   1          WriteCmd(X);                                /*这里部检测忙信号，发送地址码*/
  79   1          WriteDdr(dat);
  80   1      }
  81          
  82          void DisplayString(uchar X,uchar Y,uchar *str)   /*在指定位置显示字符串函数*/
  83          {
  84   1          uchar len = 0;
  85   1          
  86   1          Y&= 0x1;
  87   1          X&= 0xF;                                    /*限制X不能大于15，Y不能大于1*/
  88   1          while(len<= 15)                               
  89   1          {
  90   2              if(X<= 0XF)                               /*X坐标应小于0xF*/
  91   2              {
  92   3              DisplayOneChar(X,Y,str[len]);               /*显示单个字符*/
  93   3              len++;
  94   3              X++;
  95   3              }
  96   2          }
  97   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    199    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       7
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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