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FATFileSystem.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2012 ARM Limited 00003 * 00004 * Permission is hereby granted, free of charge, to any person obtaining a copy 00005 * of this software and associated documentation files (the "Software"), to deal 00006 * in the Software without restriction, including without limitation the rights 00007 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 * copies of the Software, and to permit persons to whom the Software is 00009 * furnished to do so, subject to the following conditions: 00010 * 00011 * The above copyright notice and this permission notice shall be included in 00012 * all copies or substantial portions of the Software. 00013 * 00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 00020 * SOFTWARE. 00021 */ 00022 #ifndef MBED_FATFILESYSTEM_H 00023 #define MBED_FATFILESYSTEM_H 00024 00025 #include "FileSystemLike.h" 00026 #include "FileHandle.h" 00027 #include "ff.h" 00028 #include <stdint.h> 00029 #include "PlatformMutex.h" 00030 00031 using namespace mbed; 00032 00033 /** 00034 * FATFileSystem based on ChaN's Fat Filesystem library v0.8 00035 */ 00036 class FATFileSystem : public FileSystemLike { 00037 public: 00038 00039 FATFileSystem(const char* n); 00040 virtual ~FATFileSystem(); 00041 00042 static FATFileSystem * _ffs[_VOLUMES]; // FATFileSystem objects, as parallel to FatFs drives array 00043 FATFS _fs; // Work area (file system object) for logical drive 00044 char _fsid[2]; 00045 00046 /** 00047 * Opens a file on the filesystem 00048 */ 00049 virtual FileHandle *open(const char* name, int flags); 00050 00051 /** 00052 * Removes a file path 00053 */ 00054 virtual int remove(const char *filename); 00055 00056 /** 00057 * Renames a file 00058 */ 00059 virtual int rename(const char *oldname, const char *newname); 00060 00061 /** 00062 * Formats a logical drive, FDISK artitioning rule, 512 bytes per cluster 00063 */ 00064 virtual int format(); 00065 00066 /** 00067 * Opens a directory on the filesystem 00068 */ 00069 virtual DirHandle *opendir(const char *name); 00070 00071 /** 00072 * Creates a directory path 00073 */ 00074 virtual int mkdir(const char *name, mode_t mode); 00075 00076 /** 00077 * Mounts the filesystem 00078 */ 00079 virtual int mount(); 00080 00081 /** 00082 * Unmounts the filesystem 00083 */ 00084 virtual int unmount(); 00085 00086 virtual int disk_initialize() { return 0; } 00087 virtual int disk_status() { return 0; } 00088 virtual int disk_read(uint8_t *buffer, uint32_t sector, uint32_t count) = 0; 00089 virtual int disk_write(const uint8_t *buffer, uint32_t sector, uint32_t count) = 0; 00090 virtual int disk_sync() { return 0; } 00091 virtual uint32_t disk_sectors() = 0; 00092 00093 protected: 00094 00095 virtual void lock(); 00096 virtual void unlock(); 00097 00098 private: 00099 00100 PlatformMutex *_mutex; 00101 00102 }; 00103 00104 #endif
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