+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2013.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2013 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaims all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-#ifndef _VIRTUALFAT_H_
-#define _VIRTUALFAT_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <avr/pgmspace.h>
-
- #include <LUFA/Drivers/USB/USB.h>
-
- /* Macros: */
- /** Size of the virtual FIRMWARE.BIN file in bytes. */
- #define FIRMWARE_FILE_SIZE_BYTES (FLASHEND - (FLASHEND - BOOT_START_ADDR) + 1UL)
-
- /** Number of sectors that comprise a single logical disk cluster. */
- #define SECTOR_PER_CLUSTER 4
-
- /** Size of a single logical sector on the disk. */
- #define SECTOR_SIZE_BYTES 512
-
- /** Size of a logical cluster on the disk, in bytes */
- #define CLUSTER_SIZE_BYTES (SECTOR_PER_CLUSTER * SECTOR_SIZE_BYTES)
-
- /** Number of sectors required to store a given size in bytes.
- *
- * \param[in] size Size of the data that needs to be stored
- *
- * \return Number of sectors required to store the given data on the disk.
- */
- #define FILE_SECTORS(size) ((size / SECTOR_SIZE_BYTES) + ((size % SECTOR_SIZE_BYTES) ? 1 : 0))
-
- /** Number of clusters required to store a given size in bytes.
- *
- * \param[in] size Size of the data that needs to be stored
- *
- * \return Number of clusters required to store the given data on the disk.
- */
- #define FILE_CLUSTERS(size) ((size / CLUSTER_SIZE_BYTES) + ((size % CLUSTER_SIZE_BYTES) ? 1 : 0))
-
- /** Total number of logical sectors/blocks on the disk. */
- #define LUN_MEDIA_BLOCKS (FILE_SECTORS(FIRMWARE_FILE_SIZE_BYTES) + 32)
-
- /** Converts a given time in HH:MM:SS format to a FAT filesystem time.
- *
- * \note The minimum seconds resolution of FAT is 2, thus odd seconds
- * will be truncated to the previous integer multiple of 2 seconds.
- *
- * \param[in] hh Hours (0-23)
- * \param[in] mm Minutes (0-59)
- * \param[in] ss Seconds (0-59)
- *
- * \return Given time encoded as a FAT filesystem timestamp
- */
- #define FAT_TIME(hh, mm, ss) ((hh << 11) | (mm << 5) | (ss >> 1))
-
- /** Converts a given date in DD/MM/YYYY format to a FAT filesystem date.
- *
- * \param[in] dd Days in the month (1-31)
- * \param[in] mm Months in the year (1-12)
- * \param[in] yyyy Year (1980 - 2107)
- *
- * \return Given date encoded as a FAT filesystem datestamp
- */
- #define FAT_DATE(dd, mm, yyyy) (((yyyy - 1980) << 9) | (mm << 5) | (dd << 0))
-
- /* Type Definitions: */
- /** FAT boot block structure definition, used to identify the core
- * parameters of a FAT filesystem stored on a disk.
- *
- * \note This definition is truncated to save space; the magic signature
- * 0xAA55 must be appended to the very end of the block for it to
- * be detected by the host as a valid boot block.
- */
- typedef struct
- {
- uint8_t Bootstrap[3];
- uint8_t Description[8];
- uint16_t SectorSize;
- uint8_t SectorsPerCluster;
- uint16_t ReservedSectors;
- uint8_t FATCopies;
- uint16_t RootDirectoryEntries;
- uint16_t TotalSectors16;
- uint8_t MediaDescriptor;
- uint16_t SectorsPerFAT;
- uint16_t SectorsPerTrack;
- uint16_t Heads;
- uint32_t HiddenSectors;
- uint32_t TotalSectors32;
- uint16_t PhysicalDriveNum;
- uint8_t ExtendedBootRecordSig;
- uint32_t VolumeSerialNumber;
- uint8_t VolumeLabel[11];
- uint8_t FilesystemIdentifier[8];
- /* uint8_t BootstrapProgram[448]; */
- /* uint16_t MagicSignature; */
- } FATBootBlock_t;
-
- /** FAT legacy 8.3 style directory entry structure definition, used to
- * identify the files and folders of FAT filesystem stored on a disk.
- */
- typedef struct
- {
- uint8_t Filename[8];
- uint8_t Extension[3];
- uint8_t Attributes;
- uint8_t Reserved[10];
- uint16_t CreationTime;
- uint16_t CreationDate;
- uint16_t StartingCluster;
- uint32_t FileSizeBytes;
- } FATDirectoryEntry_t;
-
- /* Function Prototypes: */
- #if defined(INCLUDE_FROM_VIRTUAL_FAT_C)
- static void UpdateFAT12ClusterEntry(uint8_t* const FATTable,
- const uint16_t Index,
- const uint16_t ChainEntry);
- static void WriteVirtualBlock(const uint16_t BlockNumber);
- static void ReadVirtualBlock(const uint16_t BlockNumber);
- #endif
-
- void VirtualFAT_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo,
- const uint32_t BlockAddress,
- uint16_t TotalBlocks);
-
- void VirtualFAT_ReadBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo,
- const uint32_t BlockAddress,
- uint16_t TotalBlocks);
-#endif
projects / pub / lufa.git / blobdiff