mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
cpp/LocalFileSystem.h
- Committer:
- mbed_official
- Date:
- 2012-11-20
- Revision:
- 0:fd0d7bdfcdc2
- Child:
- 2:143cac498751
File content as of revision 0:fd0d7bdfcdc2:
/* mbed Microcontroller Library * Copyright (c) 2006-2012 ARM Limited * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef MBED_LOCALFILESYSTEM_H #define MBED_LOCALFILESYSTEM_H #include "platform.h" #if DEVICE_LOCALFILESYSTEM #include "FileSystemLike.h" namespace mbed { FILEHANDLE local_file_open(const char* name, int flags); class LocalFileHandle : public FileHandle { public: LocalFileHandle(FILEHANDLE fh); virtual int close(); virtual ssize_t write(const void *buffer, size_t length); virtual ssize_t read(void *buffer, size_t length); virtual int isatty(); virtual off_t lseek(off_t position, int whence); virtual int fsync(); virtual off_t flen(); protected: FILEHANDLE _fh; int pos; }; /** A filesystem for accessing the local mbed Microcontroller USB disk drive * * This allows programs to read and write files on the same disk drive that is used to program the * mbed Microcontroller. Once created, the standard C file access functions are used to open, * read and write files. * * Example: * @code * #include "mbed.h" * * LocalFileSystem local("local"); // Create the local filesystem under the name "local" * * int main() { * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing * fprintf(fp, "Hello World!"); * fclose(fp); * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system * * DIR *d = opendir("/local"); // Opens the root directory of the local file system * struct dirent *p; * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system * printf("%s\n", p->d_name); // to stdout. * } * closedir(d); * } * @endcode * * @note * If the microcontroller program makes an access to the local drive, it will be marked as "removed" * on the Host computer. This means it is no longer accessible from the Host Computer. * * The drive will only re-appear when the microcontroller program exists. Note that if the program does * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again! */ class LocalFileSystem : public FileSystemLike { public: LocalFileSystem(const char* n) : FileSystemLike(n) { } virtual FileHandle *open(const char* name, int flags); virtual int remove(const char *filename); virtual DirHandle *opendir(const char *name); }; } // namespace mbed #endif #endif