main.lst

CT107D测试程序(含超声测距)

C51 COMPILER V9.02   MAIN                                                                  01/01/2006 04:35:29 PAGE 1   


C51 COMPILER V9.02, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN .\output\main.obj
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND PRINT(.\list\main.lst) OBJECT(.\output\mai
                    -n.obj)

line level    source

   1          #include "reg52.h"
   2          #include "intrins.h"
   3          
   4          unsigned char text1[] = "LCD 1602 TEST" ;
   5          unsigned char text2[] = "WWW.GXCT.NET" ;
   6          
   7          sbit RS = P2^0;
   8          sbit RW = P2^1; 
   9          sbit EN = P1^2;
  10          
  11          void delay_ms(unsigned char t);
  12          void init_1602(void);
  13          void write_command(unsigned char cmd);
  14          void write_data(unsigned char dat);
  15          void dsp_onechar(unsigned char pos,unsigned char c);
  16          void dsp_string(unsigned char line,unsigned char *p,unsigned char length);
  17          
  18          void main(void)
  19          {
  20   1              init_1602();
  21   1              delay_ms(15);
  22   1              
  23   1              dsp_string(0,text1,13);
  24   1              dsp_string(1,text2,12);
  25   1              
  26   1              while(1);       
  27   1      }
  28          
  29          void delay_ms(unsigned char t)
  30          {
  31   1              unsigned char i;
  32   1              while(t--)
  33   1              {
  34   2                      for(i=0;i<112;i++);     
  35   2              }
  36   1      }
  37          
  38          void write_command(unsigned char cmd)
  39          {
  40   1              delay_ms(5); // check busy flag
  41   1              EN = 0;
  42   1              RS = 0;
  43   1              RW = 0;
  44   1              _nop_();
  45   1              EN = 1;
  46   1              P0 = cmd;
  47   1              EN = 0;
  48   1      }
  49          
  50          void write_data(unsigned char dat)
  51          {
  52   1              delay_ms(5); //busy flag check 
  53   1              EN = 0;
  54   1              RS = 1;
C51 COMPILER V9.02   MAIN                                                                  01/01/2006 04:35:29 PAGE 2   

  55   1              RW = 0; 
  56   1              _nop_();
  57   1              EN = 1;
  58   1              P0 = dat;
  59   1              EN = 0;
  60   1              RS = 0;
  61   1      }
  62          
  63          void dsp_onechar(unsigned char pos,unsigned char c)
  64          {
  65   1              unsigned char p;
  66   1              if (pos>=0x10)
  67   1          p=pos+0xb0; 
  68   1              else 
  69   1          p=pos+0x80; 
  70   1              write_command(p);
  71   1              write_data(c); 
  72   1      }
  73          
  74          void dsp_string(unsigned char line,unsigned char *p,unsigned char length)
  75          {
  76   1              unsigned char l,i;
  77   1              l=line<<4;
  78   1              for (i=0;i<length;i++)
  79   1              dsp_onechar(l++,*(p+i));
  80   1      }
  81          
  82          void init_1602(void)
  83          {
  84   1              delay_ms(15);
  85   1              write_command(0x38); 
  86   1              write_command(0x38); 
  87   1              write_command(0x38); 
  88   1              write_command(0x06); 
  89   1              write_command(0x0c); 
  90   1              write_command(0x01); 
  91   1      }
  92          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    214    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     27       7
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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