lcdp.lst

一个充电控制器的完整单片机程序

C51 COMPILER V7.20   LCDP                                                                  06/20/2005 16:55:58 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE LCDP
OBJECT MODULE PLACED IN LCDP.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE LCDP.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*--------------------------------
   2            lcd display 16x2 chinese
   3            driver chip st7920
   4            2002.12.28
   5          ----------------------------*/
   6          #include <stdlib.h>
   7          #include <ctype.h>
   8          #include <intrins.h>
   9          #include <AT89X52.H>
  10          #include <absacc.h>
  11          #include "charger.h"
  12          //---------------------------------------
  13          //define signal connection 
  14          //---------------------------------------
  15          #define   LCDRS       T0
  16          #define   LCDRW       P1_7
  17          #define   ENABLE      T1
  18          #define   DATABUS     XBYTE[0x6000]
  19          
  20          extern void delay(unsigned int i);
  21          static void isBusy(void);
  22          
  23          
  24          //-------------------------------
  25          //LCD display char,write data to LCD ram
  26          
  27          void WD_LCD(unsigned char ch)
  28          {
  29   1              isBusy();
  30   1        LCDRS=1;
  31   1              _nop_();
  32   1              _nop_();
  33   1              _nop_();
  34   1        LCDRW=0;
  35   1              _nop_();
  36   1              _nop_();
  37   1              _nop_();
  38   1        DATABUS=ch;
  39   1              _nop_();
  40   1              _nop_();
  41   1              _nop_();
  42   1              _nop_();
  43   1              _nop_();
  44   1              _nop_();
  45   1              ENABLE=1;
  46   1              _nop_();
  47   1              _nop_();
  48   1              _nop_();
  49   1              _nop_();
  50   1              _nop_();
  51   1              _nop_();
  52   1        ENABLE=0;
  53   1              _nop_();
  54   1              _nop_();
  55   1      }
C51 COMPILER V7.20   LCDP                                                                  06/20/2005 16:55:58 PAGE 2   

  56          //---------------------------------
  57          //write lcd controll register
  58          void WC_LCD (unsigned char command)
  59          {
  60   1              isBusy();
  61   1              LCDRS=0;
  62   1              _nop_();
  63   1              LCDRW=0;
  64   1              _nop_();
  65   1              _nop_();
  66   1              DATABUS=command;
  67   1              _nop_();
  68   1              _nop_();
  69   1              _nop_();
  70   1              _nop_();
  71   1              _nop_();
  72   1              _nop_();
  73   1              ENABLE=1;
  74   1              _nop_();
  75   1              _nop_();
  76   1              _nop_();
  77   1              _nop_();
  78   1              _nop_();
  79   1              _nop_();
  80   1              ENABLE=0;
  81   1      }
  82          //----------------------------------------------
  83          //LCD busy check ,check busy flag,read acc
  84          //#pragma DISABLE
  85          
  86          static void isBusy(void)
  87          {
  88   1      unsigned char data i;
  89   1      for(i=100;i--;);
  90   1      RESET_DOG;
  91   1      
  92   1       /*
  93   1       unsigned char data i;
  94   1       i=ACC;
  95   1       P8255D=0x90;//AiBoCo;
  96   1       P0=0x0ff;
  97   1       _nop_();
  98   1       LCDRS=0;
  99   1       LCDRW=1;
 100   1       _nop_();
 101   1       ENABLE=1;
 102   1       _nop_();
 103   1      do { ACC=DATABUS;  } while(BUSYFLAG);
 104   1       ENABLE=0;
 105   1       P8255D=0x80;//AoBoCo;
 106   1              ACC=i;
 107   1              */
 108   1      }
 109          //------------------------------------------------
 110          //init lcd
 111          
 112          void clear(void)
 113          {
 114   1              WC_LCD(0x18);//base command,8bit
 115   1              isBusy();
 116   1              LCDRS=0;
 117   1              LCDRW=0;
C51 COMPILER V7.20   LCDP                                                                  06/20/2005 16:55:58 PAGE 3   

 118   1              _nop_();
 119   1              _nop_();
 120   1              DATABUS=0x1;
 121   1              _nop_();
 122   1              _nop_();
 123   1              _nop_();
 124   1              ENABLE=1;
 125   1              delay(4);
 126   1              ENABLE=0;
 127   1              _nop_();
 128   1              _nop_();
 129   1      }
 130          
 131          
 132          //---------------------------
 133          //display string
 134          
 135          void text(unsigned char sta,unsigned char *string)
 136          {
 137   1              if(sta)WC_LCD(sta);
 138   1              while(*string)WD_LCD(*string++);
 139   1      }
 140          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    166    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       5
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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