fm24c64.lst

led显示屏测试程序

C51 COMPILER V7.50   FM24C64                                                               09/02/2007 22:46:25 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE FM24C64
OBJECT MODULE PLACED IN fm24c64.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE fm24c64.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1           #include<com.h>
   2          
   3          
   4          //************************************
   5            void delay(uint j)
   6            {uint i;
   7   1         for(i=0;i<j;i++)
   8   1         ;
   9   1         }
  10          //*************************************
  11             void I_start()
  12             {
  13   1         scl=0;
  14   1         delay(1);
  15   1         sda=1;
  16   1         delay(1);
  17   1         scl=1;
  18   1         delay(1);
  19   1         sda=0;
  20   1         delay(1);
  21   1         scl=0;
  22   1         delay(1);
  23   1         
  24   1         }
  25           //***********************************
  26            void I_stop()
  27             {scl=0;
  28   1          delay(1);
  29   1          sda=0;
  30   1          delay(1);
  31   1         scl=1;
  32   1         delay(1);
  33   1         sda=1;
  34   1         delay(1);
  35   1         
  36   1         }
  37          //*************************************
  38          
  39          
  40            void I_clock()
  41             { uint i=0;
  42   1           scl=1;
  43   1           delay(1);
  44   1           while((sda==1)&(i<1000))i++;
  45   1           scl=0;
  46   1           delay(1);
  47   1         }
  48          //**********************************
  49           void I_send(uchar e_data)
  50            {
  51   1         uchar i;
  52   1         
  53   1         for(i=0;i<8;i++)
  54   1             { scl=0;delay(2); 
  55   2                   if(e_data&0x80)sda=1;
C51 COMPILER V7.50   FM24C64                                                               09/02/2007 22:46:25 PAGE 2   

  56   2                      else sda=0;        
  57   2              scl=1;delay(2);
  58   2                      e_data=e_data<<1;
  59   2             }
  60   1        
  61   1               scl=0;delay(1);sda=1;delay(1);  
  62   1        
  63   1        }
  64          //***********************************
  65           uchar I_receive()     // 读一个字节！
  66           {
  67   1          uchar da=0,reda=0;
  68   1          uchar i;   sda=1;
  69   1          for(i=0;i<8;i++)
  70   1              {  reda=reda<<1;
  71   2                         scl=1;delay(1);          
  72   2                 if (sda) da=1;
  73   2                     else da=0;
  74   2                         scl=0;
  75   2                     reda=reda|da;
  76   2                 
  77   2                 delay(1);                      
  78   2                   }
  79   1      
  80   1         return(reda);
  81   1        }
  82           //*********************************
  83          void I_write(uint eepromaddre,uchar eepromdata)
  84             {
  85   1          I_start();
  86   1          I_send(write_i2c); 
  87   1              I_clock(); 
  88   1              I_send(eepromaddre/256);
  89   1              I_clock();
  90   1              I_send(eepromaddre%256);
  91   1              I_clock(); 
  92   1              I_send(eepromdata);
  93   1              I_clock();
  94   1              I_stop();
  95   1              
  96   1              delay(50);
  97   1         }
  98             
  99          //*********************************
 100          uchar I_read(uint eepromaddre)
 101            {     uchar x;
 102   1        
 103   1         I_start();
 104   1         I_send(write_i2c);
 105   1         I_clock();  
 106   1         I_send(eepromaddre/256);
 107   1         I_clock();
 108   1         I_send(eepromaddre%256);
 109   1         I_clock(); 
 110   1         I_start();
 111   1         I_send(read_i2c);
 112   1         I_clock();
 113   1         x=I_receive();
 114   1         I_stop(); 
 115   1         delay(50);
 116   1          
 117   1         return(x); 
C51 COMPILER V7.50   FM24C64                                                               09/02/2007 22:46:25 PAGE 3   

 118   1      
 119   1        }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    312    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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