Opencv 3.1 project on GR-PEACH board
Fork of gr-peach-opencv-project by
platform/LocalFileSystem.h@170:54ff26da7eb6, 2017-07-04 (annotated)
- Committer:
- thedo
- Date:
- Tue Jul 04 06:23:13 2017 +0000
- Revision:
- 170:54ff26da7eb6
- Parent:
- 166:3a9487d57a5c
project opencv 3.1 on GR PEACH board, no use SD card.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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thedo | 166:3a9487d57a5c | 1 | /* mbed Microcontroller Library |
thedo | 166:3a9487d57a5c | 2 | * Copyright (c) 2006-2013 ARM Limited |
thedo | 166:3a9487d57a5c | 3 | * |
thedo | 166:3a9487d57a5c | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
thedo | 166:3a9487d57a5c | 5 | * you may not use this file except in compliance with the License. |
thedo | 166:3a9487d57a5c | 6 | * You may obtain a copy of the License at |
thedo | 166:3a9487d57a5c | 7 | * |
thedo | 166:3a9487d57a5c | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
thedo | 166:3a9487d57a5c | 9 | * |
thedo | 166:3a9487d57a5c | 10 | * Unless required by applicable law or agreed to in writing, software |
thedo | 166:3a9487d57a5c | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
thedo | 166:3a9487d57a5c | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
thedo | 166:3a9487d57a5c | 13 | * See the License for the specific language governing permissions and |
thedo | 166:3a9487d57a5c | 14 | * limitations under the License. |
thedo | 166:3a9487d57a5c | 15 | */ |
thedo | 166:3a9487d57a5c | 16 | #ifndef MBED_LOCALFILESYSTEM_H |
thedo | 166:3a9487d57a5c | 17 | #define MBED_LOCALFILESYSTEM_H |
thedo | 166:3a9487d57a5c | 18 | |
thedo | 166:3a9487d57a5c | 19 | #include "platform/platform.h" |
thedo | 166:3a9487d57a5c | 20 | |
thedo | 166:3a9487d57a5c | 21 | #if DEVICE_LOCALFILESYSTEM |
thedo | 166:3a9487d57a5c | 22 | |
thedo | 166:3a9487d57a5c | 23 | #include "platform/FileSystemLike.h" |
thedo | 166:3a9487d57a5c | 24 | #include "platform/PlatformMutex.h" |
thedo | 166:3a9487d57a5c | 25 | |
thedo | 166:3a9487d57a5c | 26 | namespace mbed { |
thedo | 166:3a9487d57a5c | 27 | /** \addtogroup platform */ |
thedo | 166:3a9487d57a5c | 28 | /** @{*/ |
thedo | 166:3a9487d57a5c | 29 | |
thedo | 166:3a9487d57a5c | 30 | FILEHANDLE local_file_open(const char* name, int flags); |
thedo | 166:3a9487d57a5c | 31 | /** @}*/ |
thedo | 166:3a9487d57a5c | 32 | |
thedo | 166:3a9487d57a5c | 33 | /** |
thedo | 166:3a9487d57a5c | 34 | * @class LocalFileHandle |
thedo | 166:3a9487d57a5c | 35 | * @ingroup platform |
thedo | 166:3a9487d57a5c | 36 | */ |
thedo | 166:3a9487d57a5c | 37 | class LocalFileHandle : public FileHandle { |
thedo | 166:3a9487d57a5c | 38 | |
thedo | 166:3a9487d57a5c | 39 | public: |
thedo | 166:3a9487d57a5c | 40 | LocalFileHandle(FILEHANDLE fh); |
thedo | 166:3a9487d57a5c | 41 | |
thedo | 166:3a9487d57a5c | 42 | virtual int close(); |
thedo | 166:3a9487d57a5c | 43 | |
thedo | 166:3a9487d57a5c | 44 | virtual ssize_t write(const void *buffer, size_t length); |
thedo | 166:3a9487d57a5c | 45 | |
thedo | 166:3a9487d57a5c | 46 | virtual ssize_t read(void *buffer, size_t length); |
thedo | 166:3a9487d57a5c | 47 | |
thedo | 166:3a9487d57a5c | 48 | virtual int isatty(); |
thedo | 166:3a9487d57a5c | 49 | |
thedo | 166:3a9487d57a5c | 50 | virtual off_t seek(off_t position, int whence); |
thedo | 166:3a9487d57a5c | 51 | |
thedo | 166:3a9487d57a5c | 52 | virtual int sync(); |
thedo | 166:3a9487d57a5c | 53 | |
thedo | 166:3a9487d57a5c | 54 | virtual off_t size(); |
thedo | 166:3a9487d57a5c | 55 | |
thedo | 166:3a9487d57a5c | 56 | protected: |
thedo | 166:3a9487d57a5c | 57 | virtual void lock(); |
thedo | 166:3a9487d57a5c | 58 | virtual void unlock(); |
thedo | 166:3a9487d57a5c | 59 | FILEHANDLE _fh; |
thedo | 166:3a9487d57a5c | 60 | int pos; |
thedo | 166:3a9487d57a5c | 61 | PlatformMutex _mutex; |
thedo | 166:3a9487d57a5c | 62 | }; |
thedo | 166:3a9487d57a5c | 63 | |
thedo | 166:3a9487d57a5c | 64 | /** A filesystem for accessing the local mbed Microcontroller USB disk drive |
thedo | 166:3a9487d57a5c | 65 | * |
thedo | 166:3a9487d57a5c | 66 | * This allows programs to read and write files on the same disk drive that is used to program the |
thedo | 166:3a9487d57a5c | 67 | * mbed Microcontroller. Once created, the standard C file access functions are used to open, |
thedo | 166:3a9487d57a5c | 68 | * read and write files. |
thedo | 166:3a9487d57a5c | 69 | * |
thedo | 166:3a9487d57a5c | 70 | * @note Synchronization level: Thread safe |
thedo | 166:3a9487d57a5c | 71 | * |
thedo | 166:3a9487d57a5c | 72 | * Example: |
thedo | 166:3a9487d57a5c | 73 | * @code |
thedo | 166:3a9487d57a5c | 74 | * #include "mbed.h" |
thedo | 166:3a9487d57a5c | 75 | * |
thedo | 166:3a9487d57a5c | 76 | * LocalFileSystem local("local"); // Create the local filesystem under the name "local" |
thedo | 166:3a9487d57a5c | 77 | * |
thedo | 166:3a9487d57a5c | 78 | * int main() { |
thedo | 166:3a9487d57a5c | 79 | * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing |
thedo | 166:3a9487d57a5c | 80 | * fprintf(fp, "Hello World!"); |
thedo | 166:3a9487d57a5c | 81 | * fclose(fp); |
thedo | 166:3a9487d57a5c | 82 | * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system |
thedo | 166:3a9487d57a5c | 83 | * |
thedo | 166:3a9487d57a5c | 84 | * DIR *d = opendir("/local"); // Opens the root directory of the local file system |
thedo | 166:3a9487d57a5c | 85 | * struct dirent *p; |
thedo | 166:3a9487d57a5c | 86 | * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system |
thedo | 166:3a9487d57a5c | 87 | * printf("%s\n", p->d_name); // to stdout. |
thedo | 166:3a9487d57a5c | 88 | * } |
thedo | 166:3a9487d57a5c | 89 | * closedir(d); |
thedo | 166:3a9487d57a5c | 90 | * } |
thedo | 166:3a9487d57a5c | 91 | * @endcode |
thedo | 166:3a9487d57a5c | 92 | * |
thedo | 166:3a9487d57a5c | 93 | * @note |
thedo | 166:3a9487d57a5c | 94 | * If the microcontroller program makes an access to the local drive, it will be marked as "removed" |
thedo | 166:3a9487d57a5c | 95 | * on the Host computer. This means it is no longer accessible from the Host Computer. |
thedo | 166:3a9487d57a5c | 96 | * |
thedo | 166:3a9487d57a5c | 97 | * The drive will only re-appear when the microcontroller program exists. Note that if the program does |
thedo | 166:3a9487d57a5c | 98 | * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again! |
thedo | 166:3a9487d57a5c | 99 | * @ingroup platform |
thedo | 166:3a9487d57a5c | 100 | */ |
thedo | 166:3a9487d57a5c | 101 | class LocalFileSystem : public FileSystemLike { |
thedo | 166:3a9487d57a5c | 102 | // No modifiable state |
thedo | 166:3a9487d57a5c | 103 | |
thedo | 166:3a9487d57a5c | 104 | public: |
thedo | 166:3a9487d57a5c | 105 | LocalFileSystem(const char* n) : FileSystemLike(n) { |
thedo | 166:3a9487d57a5c | 106 | |
thedo | 166:3a9487d57a5c | 107 | } |
thedo | 166:3a9487d57a5c | 108 | |
thedo | 166:3a9487d57a5c | 109 | virtual int open(FileHandle **file, const char *path, int flags); |
thedo | 166:3a9487d57a5c | 110 | virtual int open(DirHandle **dir, const char *name); |
thedo | 166:3a9487d57a5c | 111 | virtual int remove(const char *filename); |
thedo | 166:3a9487d57a5c | 112 | }; |
thedo | 166:3a9487d57a5c | 113 | |
thedo | 166:3a9487d57a5c | 114 | } // namespace mbed |
thedo | 166:3a9487d57a5c | 115 | |
thedo | 166:3a9487d57a5c | 116 | #endif |
thedo | 166:3a9487d57a5c | 117 | |
thedo | 166:3a9487d57a5c | 118 | #endif |
thedo | 166:3a9487d57a5c | 119 | |
thedo | 166:3a9487d57a5c | 120 |