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Dependencies:   mbed Watchdog SDFileSystem DigoleSerialDisp

SDFileSystem/FATFileSystem/Interface/FATFileSystem.cpp@0:a6a169de725f, 2013-05-27 (annotated)

Committer:
shimniok
Date:
Mon May 27 13:26:03 2013 +0000
Revision:
0:a6a169de725f
Working version with priorities set and update time display

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shimniok 0:a6a169de725f 1 /* mbed Microcontroller Library - FATFileSystem
shimniok 0:a6a169de725f 2 Copyright (c) 2008, sford */
shimniok 0:a6a169de725f 3
shimniok 0:a6a169de725f 4 //Modified by Thomas Hamilton, Copyright 2010
shimniok 0:a6a169de725f 5
shimniok 0:a6a169de725f 6 #include "FATFileSystem.h"
shimniok 0:a6a169de725f 7
shimniok 0:a6a169de725f 8 DWORD get_fattime(void)
shimniok 0:a6a169de725f 9 {
shimniok 0:a6a169de725f 10 return 35719201;
shimniok 0:a6a169de725f 11 }
shimniok 0:a6a169de725f 12
shimniok 0:a6a169de725f 13 FATFileSystem* FATFileSystem::DriveArray[_DRIVES] = {0};
shimniok 0:a6a169de725f 14
shimniok 0:a6a169de725f 15 FATFileSystem::FATFileSystem(const char* SystemName) : FileSystemLike(SystemName)
shimniok 0:a6a169de725f 16 {
shimniok 0:a6a169de725f 17 for (unsigned char i = 0; i < _DRIVES; i++)
shimniok 0:a6a169de725f 18 {
shimniok 0:a6a169de725f 19 if(!DriveArray[i])
shimniok 0:a6a169de725f 20 {
shimniok 0:a6a169de725f 21 DriveArray[i] = this;
shimniok 0:a6a169de725f 22 Drive = i;
shimniok 0:a6a169de725f 23 f_mount((BYTE)i, &FileSystemObject);
shimniok 0:a6a169de725f 24 return;
shimniok 0:a6a169de725f 25 }
shimniok 0:a6a169de725f 26 }
shimniok 0:a6a169de725f 27 }
shimniok 0:a6a169de725f 28
shimniok 0:a6a169de725f 29 FATFileSystem::~FATFileSystem()
shimniok 0:a6a169de725f 30 {
shimniok 0:a6a169de725f 31 for (unsigned char i = 0; i < _DRIVES; i++)
shimniok 0:a6a169de725f 32 {
shimniok 0:a6a169de725f 33 if (DriveArray[i] == this)
shimniok 0:a6a169de725f 34 {
shimniok 0:a6a169de725f 35 DriveArray[i] = NULL;
shimniok 0:a6a169de725f 36 f_mount((BYTE)i, NULL);
shimniok 0:a6a169de725f 37 }
shimniok 0:a6a169de725f 38 }
shimniok 0:a6a169de725f 39 delete this;
shimniok 0:a6a169de725f 40 }
shimniok 0:a6a169de725f 41
shimniok 0:a6a169de725f 42 FileHandle* FATFileSystem::open(const char* filename, int flags)
shimniok 0:a6a169de725f 43 {
shimniok 0:a6a169de725f 44 FAT_FIL FileObject;
shimniok 0:a6a169de725f 45 char FileName[64];
shimniok 0:a6a169de725f 46 BYTE ModeFlags = 0;
shimniok 0:a6a169de725f 47
shimniok 0:a6a169de725f 48 sprintf(FileName, "%d:/%s", Drive, filename);
shimniok 0:a6a169de725f 49 switch (flags & 3)
shimniok 0:a6a169de725f 50 {
shimniok 0:a6a169de725f 51 case O_RDONLY: ModeFlags = FA_READ; break;
shimniok 0:a6a169de725f 52 case O_WRONLY: ModeFlags = FA_WRITE; break;
shimniok 0:a6a169de725f 53 case O_RDWR: ModeFlags = FA_READ | FA_WRITE; break;
shimniok 0:a6a169de725f 54 }
shimniok 0:a6a169de725f 55 if(flags & O_CREAT)
shimniok 0:a6a169de725f 56 {
shimniok 0:a6a169de725f 57 if(flags & O_TRUNC)
shimniok 0:a6a169de725f 58 {
shimniok 0:a6a169de725f 59 ModeFlags |= FA_CREATE_ALWAYS;
shimniok 0:a6a169de725f 60 }
shimniok 0:a6a169de725f 61 else
shimniok 0:a6a169de725f 62 {
shimniok 0:a6a169de725f 63 ModeFlags |= FA_OPEN_ALWAYS;
shimniok 0:a6a169de725f 64 }
shimniok 0:a6a169de725f 65 }
shimniok 0:a6a169de725f 66 else
shimniok 0:a6a169de725f 67 {
shimniok 0:a6a169de725f 68 ModeFlags |= FA_OPEN_EXISTING;
shimniok 0:a6a169de725f 69 }
shimniok 0:a6a169de725f 70 if (f_open(&FileObject, (const TCHAR*)FileName, ModeFlags))
shimniok 0:a6a169de725f 71 {
shimniok 0:a6a169de725f 72 return NULL;
shimniok 0:a6a169de725f 73 }
shimniok 0:a6a169de725f 74 else
shimniok 0:a6a169de725f 75 {
shimniok 0:a6a169de725f 76 if (flags & O_APPEND)
shimniok 0:a6a169de725f 77 {
shimniok 0:a6a169de725f 78 f_lseek(&FileObject, (DWORD)FileObject.fsize);
shimniok 0:a6a169de725f 79 }
shimniok 0:a6a169de725f 80 return new FATFileHandle(FileObject);
shimniok 0:a6a169de725f 81 }
shimniok 0:a6a169de725f 82 }
shimniok 0:a6a169de725f 83
shimniok 0:a6a169de725f 84 int FATFileSystem::remove(const char* filename)
shimniok 0:a6a169de725f 85 {
shimniok 0:a6a169de725f 86 char FileName[64];
shimniok 0:a6a169de725f 87
shimniok 0:a6a169de725f 88 sprintf(FileName, "%d:/%s", Drive, filename);
shimniok 0:a6a169de725f 89 if (f_unlink((const TCHAR*)FileName))
shimniok 0:a6a169de725f 90 {
shimniok 0:a6a169de725f 91 return -1;
shimniok 0:a6a169de725f 92 }
shimniok 0:a6a169de725f 93 else
shimniok 0:a6a169de725f 94 {
shimniok 0:a6a169de725f 95 return 0;
shimniok 0:a6a169de725f 96 }
shimniok 0:a6a169de725f 97 }
shimniok 0:a6a169de725f 98
shimniok 0:a6a169de725f 99 int FATFileSystem::rename(const char* oldname, const char* newname)
shimniok 0:a6a169de725f 100 {
shimniok 0:a6a169de725f 101 char OldName[64];
shimniok 0:a6a169de725f 102
shimniok 0:a6a169de725f 103 sprintf(OldName, "%d:/%s", Drive, oldname);
shimniok 0:a6a169de725f 104 if (f_rename((const TCHAR*)OldName, (const TCHAR*)newname))
shimniok 0:a6a169de725f 105 {
shimniok 0:a6a169de725f 106 return -1;
shimniok 0:a6a169de725f 107 }
shimniok 0:a6a169de725f 108 else
shimniok 0:a6a169de725f 109 {
shimniok 0:a6a169de725f 110 return 0;
shimniok 0:a6a169de725f 111 }
shimniok 0:a6a169de725f 112 }
shimniok 0:a6a169de725f 113
shimniok 0:a6a169de725f 114 DirHandle* FATFileSystem::opendir(const char* name)
shimniok 0:a6a169de725f 115 {
shimniok 0:a6a169de725f 116 FAT_DIR DirectoryObject;
shimniok 0:a6a169de725f 117 char DirectoryName[64];
shimniok 0:a6a169de725f 118
shimniok 0:a6a169de725f 119 sprintf(DirectoryName, "%d:%s", Drive, name);
shimniok 0:a6a169de725f 120 if (f_opendir(&DirectoryObject, (const TCHAR*)DirectoryName))
shimniok 0:a6a169de725f 121 {
shimniok 0:a6a169de725f 122 return NULL;
shimniok 0:a6a169de725f 123 }
shimniok 0:a6a169de725f 124 else
shimniok 0:a6a169de725f 125 {
shimniok 0:a6a169de725f 126 return new FATDirHandle(DirectoryObject);
shimniok 0:a6a169de725f 127 }
shimniok 0:a6a169de725f 128 }
shimniok 0:a6a169de725f 129
shimniok 0:a6a169de725f 130 int FATFileSystem::mkdir(const char* name, mode_t mode)
shimniok 0:a6a169de725f 131 {
shimniok 0:a6a169de725f 132 char DirectoryName[64];
shimniok 0:a6a169de725f 133
shimniok 0:a6a169de725f 134 sprintf(DirectoryName, "%d:%s", Drive, name);
shimniok 0:a6a169de725f 135 if (f_mkdir((const TCHAR*)DirectoryName))
shimniok 0:a6a169de725f 136 {
shimniok 0:a6a169de725f 137 return -1;
shimniok 0:a6a169de725f 138 }
shimniok 0:a6a169de725f 139 else
shimniok 0:a6a169de725f 140 {
shimniok 0:a6a169de725f 141 return 0;
shimniok 0:a6a169de725f 142 }
shimniok 0:a6a169de725f 143 }
shimniok 0:a6a169de725f 144
shimniok 0:a6a169de725f 145 int FATFileSystem::format(unsigned int allocationunit)
shimniok 0:a6a169de725f 146 {
shimniok 0:a6a169de725f 147 if (f_mkfs(Drive, 0, allocationunit))
shimniok 0:a6a169de725f 148 {
shimniok 0:a6a169de725f 149 return -1;
shimniok 0:a6a169de725f 150 }
shimniok 0:a6a169de725f 151 else
shimniok 0:a6a169de725f 152 {
shimniok 0:a6a169de725f 153 return 0;
shimniok 0:a6a169de725f 154 }
shimniok 0:a6a169de725f 155 }