eeprom.lst

a gps program

C51 COMPILER V7.09   EEPROM                                                                11/19/2006 16:03:08 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE EEPROM
OBJECT MODULE PLACED IN eeprom.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE eeprom.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          
   2          /*** BeginHeader */
   3          #ifndef __EEPROM_C
   4          #define __EEPROM_C
   5          
   6          #include "includes.h"
   7          #include "eeprom.h"
   8          
   9          sbit cs_93 = P3^7;
  10          sbit sk_93 = P2^7;
  11          sbit di_93 = P2^6;
  12          sbit do_93 = P2^5;
  13          
  14          void delay(uint num)
  15          {
  16   1          while(num != 0)
  17   1                  num -= 1;
  18   1      }
  19          
  20          void send(uint dat, int num)
  21          {
  22   1          int i;
  23   1          dat = dat << (16 - num);
  24   1              for (i = 0; i < num; i++) {
  25   2                  if ((dat & 0x8000) == 0)
  26   2                          di_93 = 0;
  27   2                      else
  28   2                          di_93 = 1;
  29   2                      sk_93 = 1;
  30   2                      _nop_(); _nop_();
  31   2                      _nop_(); _nop_();
  32   2                      sk_93 = 0;
  33   2                      dat = dat << 1;
  34   2              }
  35   1      }
  36          
  37          uchar read(uint address)
  38          {
  39   1              uchar temp;
  40   1              int i;
  41   1          di_93 = 0;
  42   1          cs_93 = 0;
  43   1              sk_93 = 0;
  44   1              delay(5);
  45   1              cs_93 = 1;
  46   1              send((0x0c00 | address), 12);
  47   1              temp = 0;
  48   1              for (i = 0; i < 8; i++) {
  49   2                  temp = temp << 1;
  50   2                      sk_93 = 1;
  51   2                      sk_93 = 0;
  52   2                      if (do_93)
  53   2                          temp = temp | 0x01;
  54   2              }
  55   1              cs_93 = 0;
C51 COMPILER V7.09   EEPROM                                                                11/19/2006 16:03:08 PAGE 2   

  56   1              return temp;
  57   1      }
  58          
  59          uchar write(uint addr, uchar dat)
  60          {
  61   1          uchar temp;
  62   1              uint i;
  63   1              di_93 = 0;
  64   1              cs_93 = 0;
  65   1              sk_93 = 0;
  66   1              delay(5);
  67   1              cs_93 = 1;
  68   1              send(0x0980, 12);
  69   1              cs_93 = 0;
  70   1              delay(5);
  71   1              cs_93 = 1;
  72   1              send((0x0a00 | addr), 12);
  73   1              send(dat, 8);
  74   1              cs_93 = 0;
  75   1              cs_93 = 1;
  76   1              temp = 1;
  77   1              i = 50000;
  78   1              while (!do_93) {
  79   2                  i--;
  80   2                      if (i == 0) {
  81   3                          temp = 0;
  82   3                              break;
  83   3                      }
  84   2              }
  85   1              cs_93 = 0;
  86   1              delay(5);
  87   1              cs_93 = 1;
  88   1              send(0x0800, 12);
  89   1              cs_93 = 0;
  90   1              return temp;
  91   1      }
  92          
  93          void DelayMs(uchar t)
  94          {
  95   1          uchar j;
  96   1          while (t--) {
  97   2              for (j=0;j<125;j++);
  98   2          }
  99   1      }
 100          
 101          #endif // __EEPROM_C
 102          
 103          /*** EndHeader */
 104          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    255    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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