fat16.lst

用89C51SND1C实现的USB存储器的代码,包括USB通信和FLASH的读写操作.

  86          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,      
  87          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,      
  88          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,
  89          
  90          0x00,//active partion
  91          0x00,//head
  92          0x00,//partion begin
  93          0x00,//cylinder
  94          0x06,//is partion used
  95          0x00,//end head
  96          0x00,//partion end 
  97          0x00,//end cylinder
  98          0x00,0x00,0x00,0x00,
  99          0x00,0x80,0x00,0x00,//fist partion
 100          
 101          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,//second partion
 102          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,//third partion
 103          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,//forth partion
 104          
 105          0x55,0xAA       // Offset_short int_Signature           510     //0x55AA           
C51 COMPILER V6.23a  FAT16                                                                 06/02/2003 09:51:32 PAGE 3   

 106          
 107          };
 108          
 109          
 110          void WriteMBR2Flash(void)
 111          {
 112   1              if(Check_Flash_Id()==KM29U128_ID){
 113   2              WritePage(Root_Cluster, BPB_Sector, BPB_Data);
 114   2              }
 115   1              else printu("\nKM29U128 is Not Found!");
 116   1      }
 117          
 118          void CreatFAT16(void)
 119          {
 120   1              short int i;
 121   1              unsigned char *FAT=Page_Buf;
 122   1              for(i=0;i<512;i++) FAT[i] = 0x00;
 123   1              //disk type lower byte is equal to Offset_U8_BPB_Media
 124   1              FAT[0] = 0xf8;
 125   1              FAT[1] = 0xff;//system occupied the first cluster
 126   1              FAT[2] = 0xff;
 127   1              FAT[3] = 0x7f;
 128   1              
 129   1              if(Check_Flash_Id()==KM29U128_ID){
 130   2                      WritePage(Root_Cluster,Fat_Sector,FAT); //Sector 1 of Fat16
 131   2                      WritePage(Root_Cluster,Fat_Sector+2,FAT);       //Sector 1 of Fat16
 132   2                      FAT[0]=FAT[1]=FAT[2]=FAT[3]=0x00;
 133   2                      WritePage(Root_Cluster,Fat_Sector+1,FAT);       //Sector 2 of Fat16
 134   2                      WritePage(Root_Cluster,Fat_Sector+3,FAT);       //Sector 2 of Fat16
 135   2                      }
 136   1              else printu("\nKM29U128 is Not Found!");
 137   1      }
 138          
 139          void CreatDirectoryEntry(void)
 140          {
 141   1              long int i;
 142   1              unsigned char *Directory_Enties=Page_Buf;
 143   1              for(i=0;i<512;i++)  Directory_Enties[i]= 0x00;
 144   1      
 145   1              if(Check_Flash_Id()==KM29U128_ID){
 146   2                      for(i=0;i<35;i++) {
 147   3                              WritePage(Root_Cluster+i/32,Directory_Sector+i%32,Directory_Enties);
 148   3      //                      Delay(100);
 149   3                              }
 150   2                      }       
 151   1              else printu("\nKM29U128 is Not Found!");
 152   1              
 153   1      }
 154          
 155          
 156          //函数实现
 157          void Format_Fat16Media(void)
 158          {       
 159   1              Flash_Reset();
 160   1              printu("\nFlash_Reset");
 161   1              Erase_Cluster(Root_Cluster);
 162   1              Erase_Cluster(Root_Cluster+1);
 163   1      
 164   1              printu("\nErase_Cluster");
 165   1              WriteMBR2Flash();
 166   1              printu("\nWriteMBR2Flash");
 167   1              CreatFAT16();
C51 COMPILER V6.23a  FAT16                                                                 06/02/2003 09:51:32 PAGE 4   

 168   1              printu("\nCreatFAT16");
 169   1              CreatDirectoryEntry();
 170   1          printu("\nCreatDirectoryEntry");
 171   1              }
 172          
 173          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    725    ----
   CONSTANT SIZE    =    613    ----
   XDATA SIZE       =   ----      18
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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