不韋 呂 / F746_SD_Player_Demo

Demo program for library named SD_PlayerSkeleton of SD card player skeleton. SD カードプレーヤのための骨組みとして使うためのライブラリ SD_PlayerSkeleton の使用例．このプログラムについては，CQ出版社インターフェース誌 2018年7月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton

mbed_src_STM32F7/api/DirHandle.h@19:3c3833ec00d2, 2017-04-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Apr 09 12:44:17 2017 +0000
Revision:
19:3c3833ec00d2
Parent:
2:cf42e62a97dc 
20

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:cf42e62a97dc 1 /* mbed Microcontroller Library
MikamiUitOpen 2:cf42e62a97dc 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 2:cf42e62a97dc 3 *
MikamiUitOpen 2:cf42e62a97dc 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:cf42e62a97dc 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:cf42e62a97dc 6 * You may obtain a copy of the License at
MikamiUitOpen 2:cf42e62a97dc 7 *
MikamiUitOpen 2:cf42e62a97dc 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:cf42e62a97dc 9 *
MikamiUitOpen 2:cf42e62a97dc 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:cf42e62a97dc 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:cf42e62a97dc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:cf42e62a97dc 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:cf42e62a97dc 14 * limitations under the License.
MikamiUitOpen 2:cf42e62a97dc 15 */
MikamiUitOpen 2:cf42e62a97dc 16 #ifndef MBED_DIRHANDLE_H
MikamiUitOpen 2:cf42e62a97dc 17 #define MBED_DIRHANDLE_H
MikamiUitOpen 2:cf42e62a97dc 18
MikamiUitOpen 2:cf42e62a97dc 19 #if defined(__ARMCC_VERSION) || defined(__ICCARM__)
MikamiUitOpen 2:cf42e62a97dc 20 # define NAME_MAX 255
MikamiUitOpen 2:cf42e62a97dc 21 typedef int mode_t;
MikamiUitOpen 2:cf42e62a97dc 22
MikamiUitOpen 2:cf42e62a97dc 23 #else
MikamiUitOpen 2:cf42e62a97dc 24 # include <sys/syslimits.h>
MikamiUitOpen 2:cf42e62a97dc 25 #endif
MikamiUitOpen 2:cf42e62a97dc 26
MikamiUitOpen 2:cf42e62a97dc 27 #include "FileHandle.h"
MikamiUitOpen 2:cf42e62a97dc 28
MikamiUitOpen 2:cf42e62a97dc 29 struct dirent {
MikamiUitOpen 2:cf42e62a97dc 30 char d_name[NAME_MAX+1];
MikamiUitOpen 2:cf42e62a97dc 31 };
MikamiUitOpen 2:cf42e62a97dc 32
MikamiUitOpen 2:cf42e62a97dc 33 namespace mbed {
MikamiUitOpen 2:cf42e62a97dc 34
MikamiUitOpen 2:cf42e62a97dc 35 /** Represents a directory stream. Objects of this type are returned
MikamiUitOpen 2:cf42e62a97dc 36 * by a FileSystemLike's opendir method. Implementations must define
MikamiUitOpen 2:cf42e62a97dc 37 * at least closedir, readdir and rewinddir.
MikamiUitOpen 2:cf42e62a97dc 38 *
MikamiUitOpen 2:cf42e62a97dc 39 * If a FileSystemLike class defines the opendir method, then the
MikamiUitOpen 2:cf42e62a97dc 40 * directories of an object of that type can be accessed by
MikamiUitOpen 2:cf42e62a97dc 41 * DIR *d = opendir("/example/directory") (or opendir("/example")
MikamiUitOpen 2:cf42e62a97dc 42 * to open the root of the filesystem), and then using readdir(d) etc.
MikamiUitOpen 2:cf42e62a97dc 43 *
MikamiUitOpen 2:cf42e62a97dc 44 * The root directory is considered to contain all FileLike and
MikamiUitOpen 2:cf42e62a97dc 45 * FileSystemLike objects, so the DIR* returned by opendir("/") will
MikamiUitOpen 2:cf42e62a97dc 46 * reflect this.
MikamiUitOpen 2:cf42e62a97dc 47 */
MikamiUitOpen 2:cf42e62a97dc 48 class DirHandle {
MikamiUitOpen 2:cf42e62a97dc 49
MikamiUitOpen 2:cf42e62a97dc 50 public:
MikamiUitOpen 2:cf42e62a97dc 51 /** Closes the directory.
MikamiUitOpen 2:cf42e62a97dc 52 *
MikamiUitOpen 2:cf42e62a97dc 53 * @returns
MikamiUitOpen 2:cf42e62a97dc 54 * 0 on success,
MikamiUitOpen 2:cf42e62a97dc 55 * -1 on error.
MikamiUitOpen 2:cf42e62a97dc 56 */
MikamiUitOpen 2:cf42e62a97dc 57 virtual int closedir()=0;
MikamiUitOpen 2:cf42e62a97dc 58
MikamiUitOpen 2:cf42e62a97dc 59 /** Return the directory entry at the current position, and
MikamiUitOpen 2:cf42e62a97dc 60 * advances the position to the next entry.
MikamiUitOpen 2:cf42e62a97dc 61 *
MikamiUitOpen 2:cf42e62a97dc 62 * @returns
MikamiUitOpen 2:cf42e62a97dc 63 * A pointer to a dirent structure representing the
MikamiUitOpen 2:cf42e62a97dc 64 * directory entry at the current position, or NULL on reaching
MikamiUitOpen 2:cf42e62a97dc 65 * end of directory or error.
MikamiUitOpen 2:cf42e62a97dc 66 */
MikamiUitOpen 2:cf42e62a97dc 67 virtual struct dirent *readdir()=0;
MikamiUitOpen 2:cf42e62a97dc 68
MikamiUitOpen 2:cf42e62a97dc 69 /** Resets the position to the beginning of the directory.
MikamiUitOpen 2:cf42e62a97dc 70 */
MikamiUitOpen 2:cf42e62a97dc 71 virtual void rewinddir()=0;
MikamiUitOpen 2:cf42e62a97dc 72
MikamiUitOpen 2:cf42e62a97dc 73 /** Returns the current position of the DirHandle.
MikamiUitOpen 2:cf42e62a97dc 74 *
MikamiUitOpen 2:cf42e62a97dc 75 * @returns
MikamiUitOpen 2:cf42e62a97dc 76 * the current position,
MikamiUitOpen 2:cf42e62a97dc 77 * -1 on error.
MikamiUitOpen 2:cf42e62a97dc 78 */
MikamiUitOpen 2:cf42e62a97dc 79 virtual off_t telldir() { return -1; }
MikamiUitOpen 2:cf42e62a97dc 80
MikamiUitOpen 2:cf42e62a97dc 81 /** Sets the position of the DirHandle.
MikamiUitOpen 2:cf42e62a97dc 82 *
MikamiUitOpen 2:cf42e62a97dc 83 * @param location The location to seek to. Must be a value returned by telldir.
MikamiUitOpen 2:cf42e62a97dc 84 */
MikamiUitOpen 2:cf42e62a97dc 85 virtual void seekdir(off_t location) { }
MikamiUitOpen 2:cf42e62a97dc 86
MikamiUitOpen 2:cf42e62a97dc 87 virtual ~DirHandle() {}
MikamiUitOpen 2:cf42e62a97dc 88 };
MikamiUitOpen 2:cf42e62a97dc 89
MikamiUitOpen 2:cf42e62a97dc 90 } // namespace mbed
MikamiUitOpen 2:cf42e62a97dc 91
MikamiUitOpen 2:cf42e62a97dc 92 typedef mbed::DirHandle DIR;
MikamiUitOpen 2:cf42e62a97dc 93
MikamiUitOpen 2:cf42e62a97dc 94 extern "C" {
MikamiUitOpen 2:cf42e62a97dc 95 DIR *opendir(const char*);
MikamiUitOpen 2:cf42e62a97dc 96 struct dirent *readdir(DIR *);
MikamiUitOpen 2:cf42e62a97dc 97 int closedir(DIR*);
MikamiUitOpen 2:cf42e62a97dc 98 void rewinddir(DIR*);
MikamiUitOpen 2:cf42e62a97dc 99 long telldir(DIR*);
MikamiUitOpen 2:cf42e62a97dc 100 void seekdir(DIR*, long);
MikamiUitOpen 2:cf42e62a97dc 101 int mkdir(const char *name, mode_t n);
MikamiUitOpen 2:cf42e62a97dc 102 };
MikamiUitOpen 2:cf42e62a97dc 103
MikamiUitOpen 2:cf42e62a97dc 104 #endif /* MBED_DIRHANDLE_H */