lcdp.lst

一个充电控制器的完整单片机程序

C51 COMPILER V7.02a   LCDP                                                                 04/02/2003 01:07:38 PAGE 1   


C51 COMPILER V7.02a, COMPILATION OF MODULE LCDP
OBJECT MODULE PLACED IN LCDP.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE LCDP.c DEBUG OBJECTEXTEND TABS(2)

stmt 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          
  11          //#include "LCDP.H"
  12          
  13          extern void delay(unsigned int i);
  14          //---------------------------
  15          //display string
  16          static void isBusy(void);
  17          
  18          void text(unsigned char sta,unsigned char *string)
  19          {
  20   1        if(sta)WC_LCD(sta);
*** WARNING C206 IN LINE 20 OF LCDP.C: 'WC_LCD': missing function-prototype
*** ERROR C267 IN LINE 20 OF LCDP.C: 'WC_LCD': requires ANSI-style prototype
  21   1        while(*string)WD_LCD(*string++);
  22   1      }
  23          
  24          //-------------------------------
  25          //LCD display char,write data to LCD ram
  26          void WD_LCD(unsigned char ch)
  27          {
  28   1        isBusy();
  29   1        LCDRS=1;
  30   1        LCDRW=0;
  31   1        _nop_();
  32   1        _nop_();
  33   1        P0=ch;
  34   1        _nop_();
  35   1        _nop_();
  36   1        ENABLE=1;
  37   1        _nop_();
  38   1        _nop_();
  39   1        _nop_();
  40   1        ENABLE=0;
  41   1        _nop_();
  42   1        _nop_();
  43   1      }
  44          //---------------------------------
  45          //write lcd controll register
  46          void WC_LCD (unsigned char command)
  47          {
  48   1        isBusy();
  49   1        LCDRS=0;
  50   1        _nop_();
  51   1        LCDRW=0;
  52   1        _nop_();
  53   1        _nop_();
C51 COMPILER V7.02a   LCDP                                                                 04/02/2003 01:07:38 PAGE 2   

  54   1        P0=command;
  55   1        _nop_();
  56   1        _nop_();
  57   1        ENABLE=1;
  58   1        _nop_();
  59   1        _nop_();
  60   1        _nop_();
  61   1        ENABLE=0;
  62   1        _nop_();
  63   1        _nop_();
  64   1      }
  65          //----------------------------------------------
  66          //LCD busy check ,check busy flag,read acc
  67          static void isBusy(void)
  68          {
  69   1       unsigned char data i;
  70   1       i=ACC;
  71   1       P0=0x0ff;
  72   1       _nop_();
  73   1       LCDRS=0;
  74   1       LCDRW=1;
  75   1       _nop_();
  76   1       _nop_();
  77   1       ENABLE=1;
  78   1       _nop_();
  79   1       _nop_();
  80   1       _nop_();
  81   1       do{  ACC=P0; } while(BUSYFLAG);
  82   1       _nop_();
  83   1       _nop_();
  84   1       ENABLE=0;
  85   1        _nop_();
  86   1        _nop_();
  87   1       ACC=i;
  88   1      }
  89          //------------------------------------------------
  90          //init lcd
  91          
  92          void clear(void)
  93          {
  94   1        WC_LCD(0x18);//base command,8bit
  95   1        isBusy();
  96   1        LCDRS=0;
  97   1        LCDRW=0;
  98   1        _nop_();
  99   1        _nop_();
 100   1        P0=0x1;
 101   1        _nop_();
 102   1        ENABLE=1;
 103   1        delay(4);
 104   1        ENABLE=0;
 105   1        _nop_();
 106   1        _nop_();
 107   1      }
 108          
 109          

C51 COMPILATION COMPLETE.  1 WARNING(S),  1 ERROR(S)