24c02.lst

tcpip c51源程序(基于8019的TCPIP协议)

C51 COMPILER V6.21  24C02                                                                  03/08/2002 13:07:32 PAGE 1   


C51 COMPILER V6.21, COMPILATION OF MODULE 24C02
OBJECT MODULE PLACED IN 24c02.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE 24c02.c LARGE OPTIMIZE(SIZE) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg52.h>
   2          #include <intrins.h>
   3          // 对24C02的读、写
   4          // extern void read24c02(unsigned char *RamAddress,unsigned char RomAddress,unsigned char bytes);
   5          // extern void write24c02(unsigned char *RamAddress,unsigned char RomAddress,unsigned char bytes);
   6          
   7          /***************for 24c02************************************************************/
   8          #define WriteDeviceAddress 0xa0
   9          #define ReadDviceAddress 0xa1
  10          #define NOP5() _nop_();_nop_();_nop_();_nop_();_nop_()
  11          /***************************************************************************/
  12          sbit    SCL=P1^6;
  13          sbit    SDA=P1^7;
  14          /***************************************************************************/
  15          void delay_ms(unsigned char number);    
  16          /***************************************************************************/
  17          void Start() {
  18   1              SDA=1;
  19   1              NOP5();
  20   1              SCL=1;
  21   1              NOP5();
  22   1              SDA=0;
  23   1              NOP5();
  24   1              SCL=0;
  25   1              NOP5();
  26   1      }
  27          
  28          /***************************************************************************/
  29          void Stop() {
  30   1              SDA=0;
  31   1              NOP5();
  32   1              SCL=1;
  33   1              NOP5();
  34   1              SDA=1;
  35   1              NOP5();
  36   1              SCL=0;
  37   1              NOP5();
  38   1      }
  39          
  40          /***************************************************************************/
  41          void Ack() {
  42   1              SDA=0;
  43   1              NOP5();
  44   1              SCL=1;
  45   1              NOP5();
  46   1              SCL=0;
  47   1              NOP5();
  48   1              SDA=1;
  49   1      }
  50          
  51          /***************************************************************************/
  52          void NoAck()
  53          {
  54   1              SDA=1;
  55   1              NOP5();
C51 COMPILER V6.21  24C02                                                                  03/08/2002 13:07:32 PAGE 2   

  56   1              SCL=1;
  57   1              NOP5();
  58   1              SCL=0;
  59   1              NOP5();
  60   1      }
  61          
  62          /***************************************************************************/
  63          bit TestAck(void) {
  64   1              bit ErrorBit;
  65   1              SDA=1;
  66   1              NOP5();
  67   1              SCL=1;
  68   1              NOP5();
  69   1              ErrorBit=SDA;
  70   1              NOP5();
  71   1              SCL=0;
  72   1              return(ErrorBit);
  73   1      }
  74          
  75          /***************************************************************************/
  76          void Write8Bit(unsigned char input) {
  77   1              unsigned char temp;
  78   1              for(temp=8;temp!=0;temp--) {
  79   2                      SDA=(bit)(input&0x80);
  80   2                      NOP5();
  81   2                      SCL=1;
  82   2                      NOP5();
  83   2                      SCL=0;
  84   2                      NOP5();
  85   2                      input=input<<1;
  86   2              }
  87   1      }
  88          
  89          /***************************************************************************/
  90          
  91          void write24c02(unsigned char *Wdata,unsigned char RomAddress,unsigned char number) {
  92   1              Start();
  93   1              Write8Bit(WriteDeviceAddress);
  94   1              TestAck();
  95   1              Write8Bit(RomAddress);
  96   1              TestAck();
  97   1              for(;number!=0;number--) {
  98   2                      Write8Bit(*Wdata);
  99   2                      TestAck();
 100   2                      Wdata++;
 101   2              }
 102   1              Stop();
 103   1              delay_ms(10);
 104   1      }
 105          
 106          /***************************************************************************/
 107          unsigned char Read8Bit() {
 108   1              unsigned char temp,rbyte=0;
 109   1              for(temp=8;temp!=0;temp--) {
 110   2                      SCL=1;
 111   2                      rbyte=rbyte<<1;
 112   2                      rbyte=rbyte|((unsigned char)(SDA));
 113   2                      SCL=0;
 114   2              }
 115   1              return(rbyte);
 116   1      }
 117          
C51 COMPILER V6.21  24C02                                                                  03/08/2002 13:07:32 PAGE 3   

 118          /***************************************************************************/
 119          void read24c02(unsigned char *RamAddress,unsigned char RomAddress,unsigned char bytes) {
 120   1              Start();
 121   1              Write8Bit(WriteDeviceAddress);
 122   1              TestAck();
 123   1              Write8Bit(RomAddress);
 124   1              TestAck();
 125   1              Start();
 126   1              Write8Bit(ReadDviceAddress);
 127   1              TestAck();
 128   1              while(bytes!=1) {
 129   2              *RamAddress=Read8Bit();
 130   2              Ack();
 131   2              RamAddress++;
 132   2              bytes--;
 133   2              }
 134   1              *RamAddress=Read8Bit();
 135   1              NoAck();
 136   1              Stop();
 137   1      }
 138          
 139          /***************************************************************************/
 140          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    311    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----      10
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----       1
END OF MODULE INFORMATION.


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