C51 COMPILER V8.02   0                                                                     07/09/2010 10:24:12 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 0
OBJECT MODULE PLACED IN 0.OBJ
COMPILER INVOKED BY: D:\´¦ÀíÈí¼þ\keil\C51\BIN\C51.EXE 0.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          uint 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          sbit s1=P3^4;//¼ÆÊý°´¼ü
  21          sbit s2=P3^5;//ÇåÁã°´¼ü
  22          unsigned char j,k;
  23          char a,b;
  24          
  25          void delay(unsigned char i)             //ÑÓʱ³ÌÐò
  26          {
  27   1        for(j=i;j>0;j--)
  28   1          for(k=125;k>0;k--);
  29   1      }
  30          
  31          uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,                         //ÊýÂë¹Ü±àÂë
  32                                  0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
  33          
  34          void nop()
  35          {
  36   1              _nop_();
  37   1              _nop_();
  38   1      }
  39          void display(uchar a,uchar b)                   //ÏÔʾ³ÌÐò
  40          {
  41   1         dula=0;
  42   1         P0=table[a];         //ÏÔʾ°Ùλ
  43   1         dula=1;
  44   1         dula=0;
  45   1      
  46   1         wela=0;
  47   1         P0=0x7e;
  48   1         wela=1;
  49   1         wela=0;
  50   1         delay(5);
  51   1      
  52   1         dula=0;
  53   1         P0=table[b];         //ÏÔʾʮλ
  54   1         dula=1;
  55   1         dula=0;
C51 COMPILER V8.02   0                                                                     07/09/2010 10:24:12 PAGE 2   

  56   1      
  57   1         wela=0;
  58   1         P0=0x7d;
  59   1         wela=1;
  60   1         wela=0;
  61   1         delay(5);
  62   1      
  63   1         /*dula=0;
  64   1         P0=table[c];         //ÏÔʾ¸öλ
  65   1         dula=1;
  66   1         dula=0;
  67   1      
  68   1         wela=0;
  69   1         P0=0x7b;
  70   1         wela=1;
  71   1         wela=0;
  72   1         delay(5);
  73   1               */
  74   1      }
  75          
  76          /////////24C02¶ÁдÇý¶¯³ÌÐò////////////////////
  77          void delay1(unsigned int m)
  78          {       unsigned int n;
  79   1              for(n=0;n<m;n++);
  80   1      }
  81          
  82          void init()  //24c02³õʼ»¯×Ó³ÌÐò
  83          {
  84   1              scl=1;
  85   1              nop();
  86   1              sda=1;
  87   1              nop();
  88   1      }
  89          
  90          void start()        //Æô¶¯I2C×ÜÏß
  91          {
  92   1              sda=1;
  93   1              nop();
  94   1              scl=1;
  95   1              nop();
  96   1              sda=0;
  97   1              nop();
  98   1              scl=0;
  99   1              nop();
 100   1      }
 101          
 102          void stop()         //Í£Ö¹I2C×ÜÏß
 103          {
 104   1              sda=0;
 105   1              nop();
 106   1              scl=1;
 107   1              nop();
 108   1              sda=1;
 109   1              nop();
 110   1      }
 111          
 112          void writebyte(unsigned char j)  //дһ¸ö×Ö½Ú
 113          {
 114   1              unsigned char i,temp;
 115   1              temp=j;
 116   1              for (i=0;i<8;i++)
 117   1         {
C51 COMPILER V8.02   0                                                                     07/09/2010 10:24:12 PAGE 3   

 118   2                 temp=temp<<1;
 119   2                 scl=0;
 120   2                 nop();
 121   2                 sda=CY;              //temp×óÒÆʱ£¬ÒƳöµÄÖµ·ÅÈëÁËCYÖÐ
 122   2                 nop();
 123   2                 scl=1;               //´ýsdaÏßÉϵÄÊý¾ÝÎȶ¨ºó£¬½«sclÀ­¸ß
 124   2                 nop();
 125   2         }
 126   1         scl=0;
 127   1         nop();
 128   1         sda=1;
 129   1         nop();
 130   1      }
 131          
 132          unsigned char readbyte()   //¶ÁÒ»¸ö×Ö½Ú
 133          {
 134   1         unsigned char i,j,k=0;
 135   1         scl=0; nop(); sda=1;
 136   1         for (i=0;i<8;i++)
 137   1         {  
 138   2                      nop(); scl=1; nop();
 139   2              if(sda==1) 
 140   2                      j=1;
 141   2              else
 142   2                      j=0;
 143   2              k=(k<<1)|j;
 144   2                      scl=0;
 145   2              }
 146   1              nop();
 147   1              return(k);
 148   1      }
 149          
 150          void clock()         //I2C×ÜÏßʱÖÓ
 151          {
 152   1         unsigned char i=0;
 153   1         scl=1;
 154   1         nop();
 155   1         while((sda==1)&&(i<255))
 156   1                i++;
 157   1         scl=0;
 158   1         nop();
 159   1      }
 160          
 161          ////////´Ó24c02µÄµØÖ·addressÖжÁÈ¡Ò»¸ö×Ö½ÚÊý¾Ý/////
 162          unsigned char read24c02(unsigned char address)
 163          {
 164   1         unsigned char i;
 165   1         start();
 166   1         writebyte(0xa0);
 167   1         clock();
 168   1         writebyte(address);
 169   1         clock();
 170   1         start();
 171   1         writebyte(0xa1);
 172   1         clock();
 173   1         i=readbyte();
 174   1         stop();
 175   1         delay1(100);
 176   1         return(i);
 177   1      }
 178          
 179          //////Ïò24c02µÄaddressµØÖ·ÖÐдÈëÒ»×Ö½ÚÊý¾Ýinfo/////
C51 COMPILER V8.02   0                                                                     07/09/2010 10:24:12 PAGE 4   

 180          void write24c02(unsigned char address,unsigned char info)
 181          {
 182   1         start();
 183   1         writebyte(0xa0);
 184   1         clock();
 185   1         writebyte(address);
 186   1         clock();
 187   1         writebyte(info);
 188   1         clock();
 189   1         stop();
 190   1         delay1(5000); //Õâ¸öÑÓʱһ¶¨Òª×ã¹»³¤£¬·ñÔò»á³ö´í¡£ÒòΪ24c02ÔÚ´ÓsdaÉÏÈ¡µÃÊý¾Ýºó£¬»¹ÐèÒªÒ»¶¨Ê±¼äµÄÉÕ¼¹ý³
             -Ì¡£
 191   1      }
 192          
 193          void main()
 194          {
 195   1              init();        //³õʼ»¯24C02
 196   1              num=read24c02(0);
 197   1              while(1)
 198   1              {
 199   2                      if(!s1)
 200   2                      {
 201   3                              while(!s1);
 202   3                              num++;
 203   3                              write24c02(0,num);
 204   3                      }
 205   2                      if(!s2)
 206   2                      {
 207   3                              num=0;
 208   3                              write24c02(0,num);
 209   3                      }
 210   2                      a=num/10;
 211   2                      b=num%10;
 212   2                      display(a,b);
 213   2              }
 214   1              
 215   1      }
 216          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    383    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      6    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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