Thomas Hamilton
SD Card Interface class. Log raw data bytes to memory addresses of your choice, or format the card and use the FAT file system to write files.
FATFileSystem/Interface/FATFileSystem.cpp@1:94c648931f84, 2010-08-07 (annotated)
- Committer:
- Blaze513
- Date:
- Sat Aug 07 18:32:30 2010 +0000
- Revision:
- 1:94c648931f84
- Child:
- 2:716abfa4a4d0
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Blaze513 | 1:94c648931f84 | 1 | /* mbed Microcontroller Library - FATFileSystem |
| Blaze513 | 1:94c648931f84 | 2 | Copyright (c) 2008, sford */ |
| Blaze513 | 1:94c648931f84 | 3 | |
| Blaze513 | 1:94c648931f84 | 4 | #include "FATFileSystem.h" |
| Blaze513 | 1:94c648931f84 | 5 | #include "mbed.h" |
| Blaze513 | 1:94c648931f84 | 6 | |
| Blaze513 | 1:94c648931f84 | 7 | DWORD get_fattime(void) |
| Blaze513 | 1:94c648931f84 | 8 | { |
| Blaze513 | 1:94c648931f84 | 9 | return 35719201; |
| Blaze513 | 1:94c648931f84 | 10 | } |
| Blaze513 | 1:94c648931f84 | 11 | |
| Blaze513 | 1:94c648931f84 | 12 | FATFileSystem* FATFileSystem::DriveArray[_DRIVES] = {0}; |
| Blaze513 | 1:94c648931f84 | 13 | |
| Blaze513 | 1:94c648931f84 | 14 | FATFileSystem::FATFileSystem(const char* SystemName) : FileSystemLike(SystemName) |
| Blaze513 | 1:94c648931f84 | 15 | { |
| Blaze513 | 1:94c648931f84 | 16 | for (unsigned char i = 0; i < _DRIVES; i++) |
| Blaze513 | 1:94c648931f84 | 17 | { |
| Blaze513 | 1:94c648931f84 | 18 | if(DriveArray[i] == 0) |
| Blaze513 | 1:94c648931f84 | 19 | { |
| Blaze513 | 1:94c648931f84 | 20 | DriveArray[i] = this; |
| Blaze513 | 1:94c648931f84 | 21 | Drive = i; |
| Blaze513 | 1:94c648931f84 | 22 | f_mount((BYTE)i, &FileSystemObject); |
| Blaze513 | 1:94c648931f84 | 23 | return; |
| Blaze513 | 1:94c648931f84 | 24 | } |
| Blaze513 | 1:94c648931f84 | 25 | } |
| Blaze513 | 1:94c648931f84 | 26 | } |
| Blaze513 | 1:94c648931f84 | 27 | |
| Blaze513 | 1:94c648931f84 | 28 | FATFileSystem::~FATFileSystem() |
| Blaze513 | 1:94c648931f84 | 29 | { |
| Blaze513 | 1:94c648931f84 | 30 | for (unsigned char i = 0; i < _DRIVES; i++) |
| Blaze513 | 1:94c648931f84 | 31 | { |
| Blaze513 | 1:94c648931f84 | 32 | if (DriveArray[i] == this) |
| Blaze513 | 1:94c648931f84 | 33 | { |
| Blaze513 | 1:94c648931f84 | 34 | DriveArray[i] = NULL; |
| Blaze513 | 1:94c648931f84 | 35 | f_mount((BYTE)i, NULL); |
| Blaze513 | 1:94c648931f84 | 36 | } |
| Blaze513 | 1:94c648931f84 | 37 | } |
| Blaze513 | 1:94c648931f84 | 38 | } |
| Blaze513 | 1:94c648931f84 | 39 | |
| Blaze513 | 1:94c648931f84 | 40 | FileHandle* FATFileSystem::open(const char* filename, int flags) |
| Blaze513 | 1:94c648931f84 | 41 | { |
| Blaze513 | 1:94c648931f84 | 42 | FAT_FIL FileObject; |
| Blaze513 | 1:94c648931f84 | 43 | char FileName[64]; |
| Blaze513 | 1:94c648931f84 | 44 | BYTE ModeFlags = 0; |
| Blaze513 | 1:94c648931f84 | 45 | |
| Blaze513 | 1:94c648931f84 | 46 | sprintf(FileName, "%d:/%s", Drive, filename); |
| Blaze513 | 1:94c648931f84 | 47 | switch (flags & 3) |
| Blaze513 | 1:94c648931f84 | 48 | { |
| Blaze513 | 1:94c648931f84 | 49 | case O_RDONLY: ModeFlags = FA_READ; break; |
| Blaze513 | 1:94c648931f84 | 50 | case O_WRONLY: ModeFlags = FA_WRITE; break; |
| Blaze513 | 1:94c648931f84 | 51 | case O_RDWR: ModeFlags = FA_READ | FA_WRITE; break; |
| Blaze513 | 1:94c648931f84 | 52 | } |
| Blaze513 | 1:94c648931f84 | 53 | if(flags & O_CREAT) |
| Blaze513 | 1:94c648931f84 | 54 | { |
| Blaze513 | 1:94c648931f84 | 55 | if(flags & O_TRUNC) |
| Blaze513 | 1:94c648931f84 | 56 | { |
| Blaze513 | 1:94c648931f84 | 57 | ModeFlags |= FA_CREATE_ALWAYS; |
| Blaze513 | 1:94c648931f84 | 58 | } |
| Blaze513 | 1:94c648931f84 | 59 | else |
| Blaze513 | 1:94c648931f84 | 60 | { |
| Blaze513 | 1:94c648931f84 | 61 | ModeFlags |= FA_OPEN_ALWAYS; |
| Blaze513 | 1:94c648931f84 | 62 | } |
| Blaze513 | 1:94c648931f84 | 63 | } |
| Blaze513 | 1:94c648931f84 | 64 | else |
| Blaze513 | 1:94c648931f84 | 65 | { |
| Blaze513 | 1:94c648931f84 | 66 | ModeFlags |= FA_OPEN_EXISTING; |
| Blaze513 | 1:94c648931f84 | 67 | } |
| Blaze513 | 1:94c648931f84 | 68 | if (f_open(&FileObject, (const TCHAR*)FileName, ModeFlags)) |
| Blaze513 | 1:94c648931f84 | 69 | { |
| Blaze513 | 1:94c648931f84 | 70 | return NULL; |
| Blaze513 | 1:94c648931f84 | 71 | } |
| Blaze513 | 1:94c648931f84 | 72 | else |
| Blaze513 | 1:94c648931f84 | 73 | { |
| Blaze513 | 1:94c648931f84 | 74 | if (flags & O_APPEND) |
| Blaze513 | 1:94c648931f84 | 75 | { |
| Blaze513 | 1:94c648931f84 | 76 | f_lseek(&FileObject, (DWORD)FileObject.fsize); |
| Blaze513 | 1:94c648931f84 | 77 | } |
| Blaze513 | 1:94c648931f84 | 78 | return new FATFileHandle(FileObject); |
| Blaze513 | 1:94c648931f84 | 79 | } |
| Blaze513 | 1:94c648931f84 | 80 | } |
| Blaze513 | 1:94c648931f84 | 81 | |
| Blaze513 | 1:94c648931f84 | 82 | int FATFileSystem::remove(const char* filename) |
| Blaze513 | 1:94c648931f84 | 83 | { |
| Blaze513 | 1:94c648931f84 | 84 | char FileName[64]; |
| Blaze513 | 1:94c648931f84 | 85 | |
| Blaze513 | 1:94c648931f84 | 86 | sprintf(FileName, "%d:/%s", Drive, filename); |
| Blaze513 | 1:94c648931f84 | 87 | if (f_unlink((const TCHAR*)FileName)) |
| Blaze513 | 1:94c648931f84 | 88 | { |
| Blaze513 | 1:94c648931f84 | 89 | return -1; |
| Blaze513 | 1:94c648931f84 | 90 | } |
| Blaze513 | 1:94c648931f84 | 91 | else |
| Blaze513 | 1:94c648931f84 | 92 | { |
| Blaze513 | 1:94c648931f84 | 93 | return 0; |
| Blaze513 | 1:94c648931f84 | 94 | } |
| Blaze513 | 1:94c648931f84 | 95 | } |
| Blaze513 | 1:94c648931f84 | 96 | |
| Blaze513 | 1:94c648931f84 | 97 | int FATFileSystem::rename(const char* oldname, const char* newname) |
| Blaze513 | 1:94c648931f84 | 98 | { |
| Blaze513 | 1:94c648931f84 | 99 | char OldName[64]; |
| Blaze513 | 1:94c648931f84 | 100 | |
| Blaze513 | 1:94c648931f84 | 101 | sprintf(OldName, "%d:/%s", Drive, oldname); |
| Blaze513 | 1:94c648931f84 | 102 | if (f_rename((const TCHAR*)OldName, (const TCHAR*)newname)) |
| Blaze513 | 1:94c648931f84 | 103 | { |
| Blaze513 | 1:94c648931f84 | 104 | return -1; |
| Blaze513 | 1:94c648931f84 | 105 | } |
| Blaze513 | 1:94c648931f84 | 106 | else |
| Blaze513 | 1:94c648931f84 | 107 | { |
| Blaze513 | 1:94c648931f84 | 108 | return 0; |
| Blaze513 | 1:94c648931f84 | 109 | } |
| Blaze513 | 1:94c648931f84 | 110 | } |
| Blaze513 | 1:94c648931f84 | 111 | |
| Blaze513 | 1:94c648931f84 | 112 | DirHandle* FATFileSystem::opendir(const char* name) |
| Blaze513 | 1:94c648931f84 | 113 | { |
| Blaze513 | 1:94c648931f84 | 114 | FAT_DIR DirectoryObject; |
| Blaze513 | 1:94c648931f84 | 115 | char DirectoryName[64]; |
| Blaze513 | 1:94c648931f84 | 116 | |
| Blaze513 | 1:94c648931f84 | 117 | sprintf(DirectoryName, "%d:%s", Drive, name); |
| Blaze513 | 1:94c648931f84 | 118 | if (f_opendir(&DirectoryObject, (const TCHAR*)DirectoryName)) |
| Blaze513 | 1:94c648931f84 | 119 | { |
| Blaze513 | 1:94c648931f84 | 120 | return NULL; |
| Blaze513 | 1:94c648931f84 | 121 | } |
| Blaze513 | 1:94c648931f84 | 122 | else |
| Blaze513 | 1:94c648931f84 | 123 | { |
| Blaze513 | 1:94c648931f84 | 124 | return new FATDirHandle(DirectoryObject); |
| Blaze513 | 1:94c648931f84 | 125 | } |
| Blaze513 | 1:94c648931f84 | 126 | } |
| Blaze513 | 1:94c648931f84 | 127 | |
| Blaze513 | 1:94c648931f84 | 128 | int FATFileSystem::mkdir(const char* name, mode_t mode) |
| Blaze513 | 1:94c648931f84 | 129 | { |
| Blaze513 | 1:94c648931f84 | 130 | char DirectoryName[64]; |
| Blaze513 | 1:94c648931f84 | 131 | |
| Blaze513 | 1:94c648931f84 | 132 | sprintf(DirectoryName, "%d:%s", Drive, name); |
| Blaze513 | 1:94c648931f84 | 133 | if (f_mkdir((const TCHAR*)DirectoryName)) |
| Blaze513 | 1:94c648931f84 | 134 | { |
| Blaze513 | 1:94c648931f84 | 135 | return -1; |
| Blaze513 | 1:94c648931f84 | 136 | } |
| Blaze513 | 1:94c648931f84 | 137 | else |
| Blaze513 | 1:94c648931f84 | 138 | { |
| Blaze513 | 1:94c648931f84 | 139 | return 0; |
| Blaze513 | 1:94c648931f84 | 140 | } |
| Blaze513 | 1:94c648931f84 | 141 | } |