@ -72,7 +72,24 @@ static const FATBootBlock_t BootBlock =
} ;
/** FAT 8.3 style directory entry, for the virtual FLASH contents file. */
static FATDirectoryEntry_t FirmwareFileEntry =
static FATDirectoryEntry_t FirmwareFileEntries [ 2 ] =
{
/* Root volume label entry; disk label is contained in the Filename and
* Extension fields ( concantenated ) with a special attribute flag - other
* fields are ignored . Should be the same as the label in the boot block .
*/
{
. Filename = " LUFA BOO " ,
. Extension = " T " ,
. Attributes = ( 1 < < 3 ) ,
. Reserved = { 0 } ,
. CreationTime = 0 ,
. CreationDate = 0 ,
. StartingCluster = 0 ,
. FileSizeBytes = 0 ,
} ,
/* File entry for the virtual Firmware image. */
{
. Filename = " FIRMWARE " ,
. Extension = " BIN " ,
@ -82,6 +99,7 @@ static FATDirectoryEntry_t FirmwareFileEntry =
. CreationDate = FAT_DATE ( 14 , 2 , 1989 ) ,
. StartingCluster = 2 ,
. FileSizeBytes = FIRMWARE_FILE_SIZE_BYTES ,
} ,
} ;
@ -101,8 +119,8 @@ static void UpdateFAT12ClusterEntry(uint8_t* const FATTable,
const uint16_t ChainEntry )
{
/* Calculate the starting offset of the cluster entry in the FAT12 table */
uint8_t FATOffset = ( Index * 3 ) / 2 ;
bool UpperNibble = ( ( ( Index * 3 ) % 2 ) ! = 0 ) ;
uint8_t FATOffset = ( Index + ( Index > > 1 ) ) ;
bool UpperNibble = ( ( Index & 1 ) ! = 0 ) ;
/* Check if the start of the entry is at an upper nibble of the byte, fill
* out FAT12 entry as required */
@ -195,7 +213,7 @@ static void ReadVirtualBlock(const uint16_t BlockNumber)
break ;
case 3 : /* Block 3: Root file entries */
memcpy ( BlockBuffer , & FirmwareFileEntry , sizeof ( FATDirectoryEntry_t ) ) ;
memcpy ( BlockBuffer , FirmwareFileEntries , sizeof ( FirmwareFileEntries ) ) ;
break ;
default : /* Blocks 4 onwards: Data allocation section */