C51 COMPILER V7.06   STC89C58_EEPROM                                                       06/12/2008 11:00:05 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE STC89C58_EEPROM
OBJECT MODULE PLACED IN stc89c58_eeprom.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE stc89c58_eeprom.c LARGE BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          //********************************
   2          //   stc89c51 eeprom program
   3          //   2007.9.26
   4          //   lp
   5          //********************************
   6          #include <at89x52.h>
   7          #include "stc89c58_eeprom.h"                    
   8          #define uchar unsigned char
   9          #define uint unsigned int
  10          sfr  isp_data  = 0xe2;
  11          sfr  isp_addrh = 0xe3;
  12          sfr  isp_addrl = 0xe4;
  13          sfr  isp_cmd   = 0xe5;
  14          sfr  isp_trig  = 0xe6;
  15          sfr  isp_contr = 0xe7;                          
  16          bit  temp;                                                                              
  17          //********************************
  18          //fun: eeprom start
  19          //********************************
  20          static void eeprom_start()
  21          {
  22   1              temp=EA;                                                // save EA
  23   1              EA=0;
  24   1              isp_contr=0x81;
  25   1              isp_trig=0x46;
  26   1              isp_trig=0xb9;
  27   1      }
  28          //********************************
  29          //fun: eeprom_end
  30          //********************************
  31          static void eeprom_stop()
  32          {
  33   1              isp_contr=0;
  34   1              isp_cmd=0;
  35   1              isp_trig=0;
  36   1              isp_addrh=0;
  37   1              isp_addrl=0;
  38   1              EA=temp;
  39   1      }
  40          //********************************
  41          //fun:read eeprom subprogram
  42          //********************************              
  43          char read_eeprom(int addr)
  44          {
  45   1              uchar byte_data;                                           
  46   1      
  47   1              isp_addrh=addr>>8;                              
  48   1              isp_addrl=addr&0xff;    
  49   1              isp_cmd=1;      
  50   1              eeprom_start();
  51   1      //      null(); 
  52   1              eeprom_stop();
  53   1              byte_data=isp_data;
  54   1              return(byte_data);
  55   1      }
C51 COMPILER V7.06   STC89C58_EEPROM                                                       06/12/2008 11:00:05 PAGE 2   

  56          //********************************
  57          //fun:write eeprom subprogram
  58          //********************************              
  59          void write_eeprom(int addr,char byte_data)
  60          {
  61   1      
  62   1              isp_data=byte_data;     
  63   1              isp_addrh=addr>>8;                              
  64   1              isp_addrl=addr&0xff;    
  65   1              isp_cmd=2;
  66   1              eeprom_start();
  67   1      //      null(); 
  68   1              eeprom_stop();
  69   1      }
  70          //********************************
  71          //fun:wipe eeprom subprogram
  72          //********************************              
  73          void wipe_eeprom(int addr)
  74          {
  75   1              
  76   1              isp_addrh=addr>>8;                              
  77   1              isp_addrl=addr&0xff;            
  78   1              isp_cmd=3 ;
  79   1              eeprom_start();
  80   1      //      null(); 
  81   1              eeprom_stop();
  82   1      }
  83          //********************************
  84          /*
  85          main_loop()
  86          {
  87                  wipe_eeprom(0x8000);
  88                  write_eeprom(0x8000,0xf9);
  89                  TI=0;
  90                  SBUF=read_eeprom(0x8000);
  91                  while(!TI);
  92                  TI=0;
  93                  for(;;)
  94                  {
  95                          
  96                  }
  97          }
  98          */


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     99    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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