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.

  89          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,      
  90          
  91          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,      
  92          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,      
  93          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,      
  94          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,      
  95          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,
  96          
  97          0x00,//active partion
  98          0x00,//head
  99          0x00,//partion begin
 100          0x00,//cylinder
 101          0x06,//is partion used
 102          0x00,//end head
 103          0x00,//partion end 
 104          0x00,//end cylinder
 105          0x00,0x00,0x00,0x00,
C51 COMPILER V6.23a  FAT16                                                                 11/27/2003 16:49:26 PAGE 3   

 106          0x00,0x80,0x00,0x00,//fist partion
 107          
 108          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,//second partion
 109          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,//third partion
 110          0,0,0,0,0,              0,0,0,0,0,              0,0,0,0,0,              0,//forth partion
 111          
 112          0x55,0xAA       // Offset_short int_Signature           510     //0x55AA           
 113          
 114          };
 115          
 116          
 117          void WriteMBR2Flash(void)
 118          {
 119   1              if(Check_Flash_Id()==KM29U128_ID){
 120   2              WritePage(Root_Cluster, BPB_Sector, BPB_Data);
 121   2              }
 122   1              else printu("\nKM29U128 is Not Found!");
 123   1      }
 124          
 125          void CreatFAT16(void)
 126          {
 127   1              short int i;
 128   1              unsigned char *FAT=Page_Buf;
 129   1              for(i=0;i<512;i++) FAT[i] = 0x00;
 130   1              //disk type lower byte is equal to Offset_U8_BPB_Media
 131   1              FAT[0] = 0xf8;
 132   1              FAT[1] = 0xff;//system occupied the first cluster
 133   1              FAT[2] = 0xff;
 134   1              FAT[3] = 0x7f;
 135   1              
 136   1              if(Check_Flash_Id()==KM29U128_ID){
 137   2                      WritePage(Root_Cluster,Fat_Sector,FAT); //Sector 1 of Fat16
 138   2                      WritePage(Root_Cluster,Fat_Sector+2,FAT);       //Sector 1 of Fat16
 139   2                      FAT[0]=FAT[1]=FAT[2]=FAT[3]=0x00;
 140   2                      WritePage(Root_Cluster,Fat_Sector+1,FAT);       //Sector 2 of Fat16
 141   2                      WritePage(Root_Cluster,Fat_Sector+3,FAT);       //Sector 2 of Fat16
 142   2                      }
 143   1              else printu("\nKM29U128 is Not Found!");
 144   1      }
 145          
 146          void CreatDirectoryEntry(void)
 147          {
 148   1              long int i;
 149   1              unsigned char *Directory_Enties=Page_Buf;
 150   1              for(i=0;i<512;i++)  Directory_Enties[i]= 0x00;
 151   1      
 152   1              if(Check_Flash_Id()==KM29U128_ID){
 153   2                      for(i=0;i<35;i++) {
 154   3                              WritePage(Root_Cluster+i/32,Directory_Sector+i%32,Directory_Enties);
 155   3      //                      Delay(100);
 156   3                              }
 157   2                      }       
 158   1              else printu("\nKM29U128 is Not Found!");
 159   1              
 160   1      }
 161          
 162          
 163          //函数实现
 164          void Format_Fat16Media(void)
 165          {       
 166   1              Flash_Reset();
 167   1              printu("\nFlash_Reset");
C51 COMPILER V6.23a  FAT16                                                                 11/27/2003 16:49:26 PAGE 4   

 168   1              Erase_Cluster(Root_Cluster);
 169   1              Erase_Cluster(Root_Cluster+1);
 170   1      
 171   1              printu("\nErase_Cluster");
 172   1              WriteMBR2Flash();
 173   1              printu("\nWriteMBR2Flash");
 174   1              CreatFAT16();
 175   1              printu("\nCreatFAT16");
 176   1              CreatDirectoryEntry();
 177   1          printu("\nCreatDirectoryEntry");
 178   1              }
 179          
 180          


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)