Freeman Oldman / NUCLEO_STM32F401RE_CC3000_ILI9341

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mbed-src/api/LocalFileSystem.h@0:5464d5e415e5, 2014-10-08 (annotated)

Committer:
sinrab
Date:
Wed Oct 08 11:00:24 2014 +0000
Revision:
0:5464d5e415e5
The code from https://github.com/vpcola/Nucleo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sinrab 0:5464d5e415e5 1 /* mbed Microcontroller Library
sinrab 0:5464d5e415e5 2 * Copyright (c) 2006-2013 ARM Limited
sinrab 0:5464d5e415e5 3 *
sinrab 0:5464d5e415e5 4 * Licensed under the Apache License, Version 2.0 (the "License");
sinrab 0:5464d5e415e5 5 * you may not use this file except in compliance with the License.
sinrab 0:5464d5e415e5 6 * You may obtain a copy of the License at
sinrab 0:5464d5e415e5 7 *
sinrab 0:5464d5e415e5 8 * http://www.apache.org/licenses/LICENSE-2.0
sinrab 0:5464d5e415e5 9 *
sinrab 0:5464d5e415e5 10 * Unless required by applicable law or agreed to in writing, software
sinrab 0:5464d5e415e5 11 * distributed under the License is distributed on an "AS IS" BASIS,
sinrab 0:5464d5e415e5 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sinrab 0:5464d5e415e5 13 * See the License for the specific language governing permissions and
sinrab 0:5464d5e415e5 14 * limitations under the License.
sinrab 0:5464d5e415e5 15 */
sinrab 0:5464d5e415e5 16 #ifndef MBED_LOCALFILESYSTEM_H
sinrab 0:5464d5e415e5 17 #define MBED_LOCALFILESYSTEM_H
sinrab 0:5464d5e415e5 18
sinrab 0:5464d5e415e5 19 #include "platform.h"
sinrab 0:5464d5e415e5 20
sinrab 0:5464d5e415e5 21 #if DEVICE_LOCALFILESYSTEM
sinrab 0:5464d5e415e5 22
sinrab 0:5464d5e415e5 23 #include "FileSystemLike.h"
sinrab 0:5464d5e415e5 24
sinrab 0:5464d5e415e5 25 namespace mbed {
sinrab 0:5464d5e415e5 26
sinrab 0:5464d5e415e5 27 FILEHANDLE local_file_open(const char* name, int flags);
sinrab 0:5464d5e415e5 28
sinrab 0:5464d5e415e5 29 class LocalFileHandle : public FileHandle {
sinrab 0:5464d5e415e5 30
sinrab 0:5464d5e415e5 31 public:
sinrab 0:5464d5e415e5 32 LocalFileHandle(FILEHANDLE fh);
sinrab 0:5464d5e415e5 33
sinrab 0:5464d5e415e5 34 virtual int close();
sinrab 0:5464d5e415e5 35
sinrab 0:5464d5e415e5 36 virtual ssize_t write(const void *buffer, size_t length);
sinrab 0:5464d5e415e5 37
sinrab 0:5464d5e415e5 38 virtual ssize_t read(void *buffer, size_t length);
sinrab 0:5464d5e415e5 39
sinrab 0:5464d5e415e5 40 virtual int isatty();
sinrab 0:5464d5e415e5 41
sinrab 0:5464d5e415e5 42 virtual off_t lseek(off_t position, int whence);
sinrab 0:5464d5e415e5 43
sinrab 0:5464d5e415e5 44 virtual int fsync();
sinrab 0:5464d5e415e5 45
sinrab 0:5464d5e415e5 46 virtual off_t flen();
sinrab 0:5464d5e415e5 47
sinrab 0:5464d5e415e5 48 protected:
sinrab 0:5464d5e415e5 49 FILEHANDLE _fh;
sinrab 0:5464d5e415e5 50 int pos;
sinrab 0:5464d5e415e5 51 };
sinrab 0:5464d5e415e5 52
sinrab 0:5464d5e415e5 53 /** A filesystem for accessing the local mbed Microcontroller USB disk drive
sinrab 0:5464d5e415e5 54 *
sinrab 0:5464d5e415e5 55 * This allows programs to read and write files on the same disk drive that is used to program the
sinrab 0:5464d5e415e5 56 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
sinrab 0:5464d5e415e5 57 * read and write files.
sinrab 0:5464d5e415e5 58 *
sinrab 0:5464d5e415e5 59 * Example:
sinrab 0:5464d5e415e5 60 * @code
sinrab 0:5464d5e415e5 61 * #include "mbed.h"
sinrab 0:5464d5e415e5 62 *
sinrab 0:5464d5e415e5 63 * LocalFileSystem local("local"); // Create the local filesystem under the name "local"
sinrab 0:5464d5e415e5 64 *
sinrab 0:5464d5e415e5 65 * int main() {
sinrab 0:5464d5e415e5 66 * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
sinrab 0:5464d5e415e5 67 * fprintf(fp, "Hello World!");
sinrab 0:5464d5e415e5 68 * fclose(fp);
sinrab 0:5464d5e415e5 69 * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
sinrab 0:5464d5e415e5 70 *
sinrab 0:5464d5e415e5 71 * DIR *d = opendir("/local"); // Opens the root directory of the local file system
sinrab 0:5464d5e415e5 72 * struct dirent *p;
sinrab 0:5464d5e415e5 73 * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
sinrab 0:5464d5e415e5 74 * printf("%s\n", p->d_name); // to stdout.
sinrab 0:5464d5e415e5 75 * }
sinrab 0:5464d5e415e5 76 * closedir(d);
sinrab 0:5464d5e415e5 77 * }
sinrab 0:5464d5e415e5 78 * @endcode
sinrab 0:5464d5e415e5 79 *
sinrab 0:5464d5e415e5 80 * @note
sinrab 0:5464d5e415e5 81 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
sinrab 0:5464d5e415e5 82 * on the Host computer. This means it is no longer accessible from the Host Computer.
sinrab 0:5464d5e415e5 83 *
sinrab 0:5464d5e415e5 84 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
sinrab 0:5464d5e415e5 85 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
sinrab 0:5464d5e415e5 86 */
sinrab 0:5464d5e415e5 87 class LocalFileSystem : public FileSystemLike {
sinrab 0:5464d5e415e5 88
sinrab 0:5464d5e415e5 89 public:
sinrab 0:5464d5e415e5 90 LocalFileSystem(const char* n) : FileSystemLike(n) {
sinrab 0:5464d5e415e5 91
sinrab 0:5464d5e415e5 92 }
sinrab 0:5464d5e415e5 93
sinrab 0:5464d5e415e5 94 virtual FileHandle *open(const char* name, int flags);
sinrab 0:5464d5e415e5 95 virtual int remove(const char *filename);
sinrab 0:5464d5e415e5 96 virtual DirHandle *opendir(const char *name);
sinrab 0:5464d5e415e5 97 };
sinrab 0:5464d5e415e5 98
sinrab 0:5464d5e415e5 99 } // namespace mbed
sinrab 0:5464d5e415e5 100
sinrab 0:5464d5e415e5 101 #endif
sinrab 0:5464d5e415e5 102
sinrab 0:5464d5e415e5 103 #endif
sinrab 0:5464d5e415e5 104