不韋 呂 / F746_SD_BitmapViewer

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Dependencies:   SDFileSystem_Warning_Fixed F746_GUI

mbed_src_STM32F7/api/LocalFileSystem.h@0:f62ffd3644bf, 2018-10-21 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 21 11:29:47 2018 +0000
Revision:
0:f62ffd3644bf
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:f62ffd3644bf 1 /* mbed Microcontroller Library
MikamiUitOpen 0:f62ffd3644bf 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:f62ffd3644bf 3 *
MikamiUitOpen 0:f62ffd3644bf 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:f62ffd3644bf 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:f62ffd3644bf 6 * You may obtain a copy of the License at
MikamiUitOpen 0:f62ffd3644bf 7 *
MikamiUitOpen 0:f62ffd3644bf 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:f62ffd3644bf 9 *
MikamiUitOpen 0:f62ffd3644bf 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:f62ffd3644bf 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:f62ffd3644bf 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:f62ffd3644bf 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:f62ffd3644bf 14 * limitations under the License.
MikamiUitOpen 0:f62ffd3644bf 15 */
MikamiUitOpen 0:f62ffd3644bf 16 #ifndef MBED_LOCALFILESYSTEM_H
MikamiUitOpen 0:f62ffd3644bf 17 #define MBED_LOCALFILESYSTEM_H
MikamiUitOpen 0:f62ffd3644bf 18
MikamiUitOpen 0:f62ffd3644bf 19 #include "platform.h"
MikamiUitOpen 0:f62ffd3644bf 20
MikamiUitOpen 0:f62ffd3644bf 21 #if DEVICE_LOCALFILESYSTEM
MikamiUitOpen 0:f62ffd3644bf 22
MikamiUitOpen 0:f62ffd3644bf 23 #include "FileSystemLike.h"
MikamiUitOpen 0:f62ffd3644bf 24
MikamiUitOpen 0:f62ffd3644bf 25 namespace mbed {
MikamiUitOpen 0:f62ffd3644bf 26
MikamiUitOpen 0:f62ffd3644bf 27 FILEHANDLE local_file_open(const char* name, int flags);
MikamiUitOpen 0:f62ffd3644bf 28
MikamiUitOpen 0:f62ffd3644bf 29 class LocalFileHandle : public FileHandle {
MikamiUitOpen 0:f62ffd3644bf 30
MikamiUitOpen 0:f62ffd3644bf 31 public:
MikamiUitOpen 0:f62ffd3644bf 32 LocalFileHandle(FILEHANDLE fh);
MikamiUitOpen 0:f62ffd3644bf 33
MikamiUitOpen 0:f62ffd3644bf 34 virtual int close();
MikamiUitOpen 0:f62ffd3644bf 35
MikamiUitOpen 0:f62ffd3644bf 36 virtual ssize_t write(const void *buffer, size_t length);
MikamiUitOpen 0:f62ffd3644bf 37
MikamiUitOpen 0:f62ffd3644bf 38 virtual ssize_t read(void *buffer, size_t length);
MikamiUitOpen 0:f62ffd3644bf 39
MikamiUitOpen 0:f62ffd3644bf 40 virtual int isatty();
MikamiUitOpen 0:f62ffd3644bf 41
MikamiUitOpen 0:f62ffd3644bf 42 virtual off_t lseek(off_t position, int whence);
MikamiUitOpen 0:f62ffd3644bf 43
MikamiUitOpen 0:f62ffd3644bf 44 virtual int fsync();
MikamiUitOpen 0:f62ffd3644bf 45
MikamiUitOpen 0:f62ffd3644bf 46 virtual off_t flen();
MikamiUitOpen 0:f62ffd3644bf 47
MikamiUitOpen 0:f62ffd3644bf 48 protected:
MikamiUitOpen 0:f62ffd3644bf 49 FILEHANDLE _fh;
MikamiUitOpen 0:f62ffd3644bf 50 int pos;
MikamiUitOpen 0:f62ffd3644bf 51 };
MikamiUitOpen 0:f62ffd3644bf 52
MikamiUitOpen 0:f62ffd3644bf 53 /** A filesystem for accessing the local mbed Microcontroller USB disk drive
MikamiUitOpen 0:f62ffd3644bf 54 *
MikamiUitOpen 0:f62ffd3644bf 55 * This allows programs to read and write files on the same disk drive that is used to program the
MikamiUitOpen 0:f62ffd3644bf 56 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
MikamiUitOpen 0:f62ffd3644bf 57 * read and write files.
MikamiUitOpen 0:f62ffd3644bf 58 *
MikamiUitOpen 0:f62ffd3644bf 59 * Example:
MikamiUitOpen 0:f62ffd3644bf 60 * @code
MikamiUitOpen 0:f62ffd3644bf 61 * #include "mbed.h"
MikamiUitOpen 0:f62ffd3644bf 62 *
MikamiUitOpen 0:f62ffd3644bf 63 * LocalFileSystem local("local"); // Create the local filesystem under the name "local"
MikamiUitOpen 0:f62ffd3644bf 64 *
MikamiUitOpen 0:f62ffd3644bf 65 * int main() {
MikamiUitOpen 0:f62ffd3644bf 66 * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
MikamiUitOpen 0:f62ffd3644bf 67 * fprintf(fp, "Hello World!");
MikamiUitOpen 0:f62ffd3644bf 68 * fclose(fp);
MikamiUitOpen 0:f62ffd3644bf 69 * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
MikamiUitOpen 0:f62ffd3644bf 70 *
MikamiUitOpen 0:f62ffd3644bf 71 * DIR *d = opendir("/local"); // Opens the root directory of the local file system
MikamiUitOpen 0:f62ffd3644bf 72 * struct dirent *p;
MikamiUitOpen 0:f62ffd3644bf 73 * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
MikamiUitOpen 0:f62ffd3644bf 74 * printf("%s\n", p->d_name); // to stdout.
MikamiUitOpen 0:f62ffd3644bf 75 * }
MikamiUitOpen 0:f62ffd3644bf 76 * closedir(d);
MikamiUitOpen 0:f62ffd3644bf 77 * }
MikamiUitOpen 0:f62ffd3644bf 78 * @endcode
MikamiUitOpen 0:f62ffd3644bf 79 *
MikamiUitOpen 0:f62ffd3644bf 80 * @note
MikamiUitOpen 0:f62ffd3644bf 81 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
MikamiUitOpen 0:f62ffd3644bf 82 * on the Host computer. This means it is no longer accessible from the Host Computer.
MikamiUitOpen 0:f62ffd3644bf 83 *
MikamiUitOpen 0:f62ffd3644bf 84 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
MikamiUitOpen 0:f62ffd3644bf 85 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
MikamiUitOpen 0:f62ffd3644bf 86 */
MikamiUitOpen 0:f62ffd3644bf 87 class LocalFileSystem : public FileSystemLike {
MikamiUitOpen 0:f62ffd3644bf 88
MikamiUitOpen 0:f62ffd3644bf 89 public:
MikamiUitOpen 0:f62ffd3644bf 90 LocalFileSystem(const char* n) : FileSystemLike(n) {
MikamiUitOpen 0:f62ffd3644bf 91
MikamiUitOpen 0:f62ffd3644bf 92 }
MikamiUitOpen 0:f62ffd3644bf 93
MikamiUitOpen 0:f62ffd3644bf 94 virtual FileHandle *open(const char* name, int flags);
MikamiUitOpen 0:f62ffd3644bf 95 virtual int remove(const char *filename);
MikamiUitOpen 0:f62ffd3644bf 96 virtual DirHandle *opendir(const char *name);
MikamiUitOpen 0:f62ffd3644bf 97 };
MikamiUitOpen 0:f62ffd3644bf 98
MikamiUitOpen 0:f62ffd3644bf 99 } // namespace mbed
MikamiUitOpen 0:f62ffd3644bf 100
MikamiUitOpen 0:f62ffd3644bf 101 #endif
MikamiUitOpen 0:f62ffd3644bf 102
MikamiUitOpen 0:f62ffd3644bf 103 #endif