C51 COMPILER V8.02   24C02                                                                 07/09/2010 09:24:45 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 24C02
OBJECT MODULE PLACED IN 24c02.OBJ
COMPILER INVOKED BY: D:\´¦ÀíÈí¼þ\keil\C51\BIN\C51.EXE 24c02.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /***************************************************************
   2                                                  ¡°ÌìÏéµç×Ó¡±            ÇãÇé·îÏ×
   3                                                                  www.txmcu.com
   4                                                                  www.txmcu.cn
   5          *****************************************************************
   6          ³ÌÐò¹¦ÄÜ£º  ÏòIIC×ÜÏßÆ÷¼þ24c02EEPROMÖеØַΪ3µÄ´æ´¢µ¥ÔªÖÐдÈëÊý¾Ý34
   7                                  ²¢½«Æä¶Á³ö£¬ÏÔʾÓÚÊýÂë¹ÜÉÏ¡£
   8                                  Ö÷ҪΪÁËÁ·Ï°IIC×ÜÏßµÄÇý¶¯³ÌÐòÒÔ¼°24C02µÄ²Ù×÷·½·¨¡£
   9          ***************************************************************/
  10          //ÊÔÑéAT24C02EEPROMоƬ³ÌÐò
  11          #include<reg51.h>
  12          #include <intrins.h>
  13          #define uint unsigned int
  14          #define uchar unsigned char
  15          unsigned char num;        //¶¨Òå¼ÆÊýÖµ£¬Ã¿¹ý1Ã룬sec¼Ó1
  16          sbit sda=P2^0;                          //IO¿Ú¶¨Òå
  17          sbit scl=P2^1;
  18          sbit dula=P2^6;
  19          sbit wela=P2^7;
  20          unsigned char j,k;
  21          char a,b;
  22          
  23          void delay(unsigned char i)             //ÑÓʱ³ÌÐò
  24          {
  25   1        for(j=i;j>0;j--)
  26   1          for(k=125;k>0;k--);
  27   1      }
  28          
  29          uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,                         //ÊýÂë¹Ü±àÂë
  30                                  0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
  31          
  32          void nop()
  33          {
  34   1              _nop_();
  35   1              _nop_();
  36   1      }
  37          void display(uchar a,uchar b)                   //ÏÔʾ³ÌÐò
  38          {
  39   1         dula=0;
  40   1         P0=table[a];         //ÏÔʾ°Ùλ
  41   1         dula=1;
  42   1         dula=0;
  43   1      
  44   1         wela=0;
  45   1         P0=0x7e;
  46   1         wela=1;
  47   1         wela=0;
  48   1         delay(5);
  49   1      
  50   1         dula=0;
  51   1         P0=table[b];         //ÏÔʾʮλ
  52   1         dula=1;
  53   1         dula=0;
  54   1      
  55   1         wela=0;
C51 COMPILER V8.02   24C02                                                                 07/09/2010 09:24:45 PAGE 2   

  56   1         P0=0x7d;
  57   1         wela=1;
  58   1         wela=0;
  59   1         delay(5);
  60   1      
  61   1      }
  62          
  63          /////////24C02¶ÁдÇý¶¯³ÌÐò////////////////////
  64          void delay1(unsigned int m)
  65          {       unsigned int n;
  66   1              for(n=0;n<m;n++);
  67   1      }
  68          
  69          void init()  //24c02³õʼ»¯×Ó³ÌÐò
  70          {
  71   1              scl=1;
  72   1              nop();
  73   1              sda=1;
  74   1              nop();
  75   1      }
  76          
  77          void start()        //Æô¶¯I2C×ÜÏß
  78          {
  79   1              sda=1;
  80   1              nop();
  81   1              scl=1;
  82   1              nop();
  83   1              sda=0;
  84   1              nop();
  85   1              scl=0;
  86   1              nop();
  87   1      }
  88          
  89          void stop()         //Í£Ö¹I2C×ÜÏß
  90          {
  91   1              sda=0;
  92   1              nop();
  93   1              scl=1;
  94   1              nop();
  95   1              sda=1;
  96   1              nop();
  97   1      }
  98          
  99          void writebyte(unsigned char j)  //дһ¸ö×Ö½Ú
 100          {
 101   1              unsigned char i,temp;
 102   1              temp=j;
 103   1              for (i=0;i<8;i++)
 104   1         {
 105   2                 temp=temp<<1;
 106   2                 scl=0;
 107   2                 nop();
 108   2                 sda=CY;              //temp×óÒÆʱ£¬ÒƳöµÄÖµ·ÅÈëÁËCYÖÐ
 109   2                 nop();
 110   2                 scl=1;               //´ýsdaÏßÉϵÄÊý¾ÝÎȶ¨ºó£¬½«sclÀ­¸ß
 111   2                 nop();
 112   2         }
 113   1         scl=0;
 114   1         nop();
 115   1         sda=1;
 116   1         nop();
 117   1      }
C51 COMPILER V8.02   24C02                                                                 07/09/2010 09:24:45 PAGE 3   

 118          
 119          unsigned char readbyte()   //¶ÁÒ»¸ö×Ö½Ú
 120          {
 121   1         unsigned char i,j,k=0;
 122   1         scl=0; nop(); sda=1;
 123   1         for (i=0;i<8;i++)
 124   1         {  
 125   2                      nop(); scl=1; nop();
 126   2              if(sda==1) 
 127   2                      j=1;
 128   2              else
 129   2                      j=0;
 130   2              k=(k<<1)|j;
 131   2                      scl=0;
 132   2              }
 133   1              nop();
 134   1              return(k);
 135   1      }
 136          
 137          void clock()         //I2C×ÜÏßʱÖÓ
 138          {
 139   1         unsigned char i=0;
 140   1         scl=1;
 141   1         nop();
 142   1         while((sda==1)&&(i<255))
 143   1                i++;
 144   1         scl=0;
 145   1         nop();
 146   1      }
 147          
 148          ////////´Ó24c02µÄµØÖ·addressÖжÁÈ¡Ò»¸ö×Ö½ÚÊý¾Ý/////
 149          unsigned char read24c02(unsigned char address)
 150          {
 151   1         unsigned char i;
 152   1         start();
 153   1         writebyte(0xa0);
 154   1         clock();
 155   1         writebyte(address);
 156   1         clock();
 157   1         start();
 158   1         writebyte(0xa1);
 159   1         clock();
 160   1         i=readbyte();
 161   1         stop();
 162   1         delay1(100);
 163   1         return(i);
 164   1      }
 165          
 166          //////Ïò24c02µÄaddressµØÖ·ÖÐдÈëÒ»×Ö½ÚÊý¾Ýinfo/////
 167          void write24c02(unsigned char address,unsigned char info)
 168          {
 169   1         start();
 170   1         writebyte(0xa0);
 171   1         clock();
 172   1         writebyte(address);
 173   1         clock();
 174   1         writebyte(info);
 175   1         clock();
 176   1         stop();
 177   1         delay1(5000); //Õâ¸öÑÓʱһ¶¨Òª×ã¹»³¤£¬·ñÔò»á³ö´í¡£ÒòΪ24c02ÔÚ´ÓsdaÉÏÈ¡µÃÊý¾Ýºó£¬»¹ÐèÒªÒ»¶¨Ê±¼äµÄÉÕ¼¹ý³
             -Ì¡£
 178   1      }
C51 COMPILER V8.02   24C02                                                                 07/09/2010 09:24:45 PAGE 4   

 179          
 180          void main()
 181          {
 182   1      
 183   1              init();        //³õʼ»¯24C02
 184   1              write24c02(3,34);//Ïò24c02ÖеĵØַΪ3µÄ´æ´¢µ¥ÔªÐ´ÈëÊ®½øÖÆÊý×Ö34
 185   1              num=read24c02(3);//ÿ´ÎÖØпª»úʱ£¬¶Á³ö±£´æµÄÊý¾Ý¸³ÓÚnum
 186   1              a=num/10;
 187   1              b=num%10;
 188   1              while(1)
 189   1              {
 190   2                      display(a,b);
 191   2              }
 192   1      }
 193          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    346    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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