不韋 呂 / F746_Spectrogram

Realtime spectrogram for DISCO-F746NG. On-board MEMS microphone is used for input sound signal. リアルタイムスペクトログラム．入力：MEMSマイク

Dependencies:   F746_GUI F746_SAI_IO UIT_FFT_Real

mbed_src_STM32F7/common/FileSystemLike.cpp@6:b3885567877c, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 13:43:07 2017 +0000
Revision:
6:b3885567877c
Parent:
4:c1beacfc42c7 
7

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 4:c1beacfc42c7 1 /* mbed Microcontroller Library
MikamiUitOpen 4:c1beacfc42c7 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 4:c1beacfc42c7 3 *
MikamiUitOpen 4:c1beacfc42c7 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 4:c1beacfc42c7 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 4:c1beacfc42c7 6 * You may obtain a copy of the License at
MikamiUitOpen 4:c1beacfc42c7 7 *
MikamiUitOpen 4:c1beacfc42c7 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 4:c1beacfc42c7 9 *
MikamiUitOpen 4:c1beacfc42c7 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 4:c1beacfc42c7 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 4:c1beacfc42c7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 4:c1beacfc42c7 13 * See the License for the specific language governing permissions and
MikamiUitOpen 4:c1beacfc42c7 14 * limitations under the License.
MikamiUitOpen 4:c1beacfc42c7 15 */
MikamiUitOpen 4:c1beacfc42c7 16 #include "FileSystemLike.h"
MikamiUitOpen 4:c1beacfc42c7 17
MikamiUitOpen 4:c1beacfc42c7 18 namespace mbed {
MikamiUitOpen 4:c1beacfc42c7 19
MikamiUitOpen 4:c1beacfc42c7 20 class BaseDirHandle : public DirHandle {
MikamiUitOpen 4:c1beacfc42c7 21 public:
MikamiUitOpen 4:c1beacfc42c7 22 /*
MikamiUitOpen 4:c1beacfc42c7 23 We keep track of our current location as the n'th object in the
MikamiUitOpen 4:c1beacfc42c7 24 FileSystemLike list. Using a Base* instead would cause problems if that
MikamiUitOpen 4:c1beacfc42c7 25 object were to be destroyed between readdirs.
MikamiUitOpen 4:c1beacfc42c7 26 Using this method does mean though that destroying/creating objects can
MikamiUitOpen 4:c1beacfc42c7 27 give unusual results from readdir.
MikamiUitOpen 4:c1beacfc42c7 28 */
MikamiUitOpen 4:c1beacfc42c7 29 off_t n;
MikamiUitOpen 4:c1beacfc42c7 30 struct dirent cur_entry;
MikamiUitOpen 4:c1beacfc42c7 31
MikamiUitOpen 4:c1beacfc42c7 32 BaseDirHandle() : n(0), cur_entry() {
MikamiUitOpen 4:c1beacfc42c7 33 }
MikamiUitOpen 4:c1beacfc42c7 34
MikamiUitOpen 4:c1beacfc42c7 35 virtual int closedir() {
MikamiUitOpen 4:c1beacfc42c7 36 delete this;
MikamiUitOpen 4:c1beacfc42c7 37 return 0;
MikamiUitOpen 4:c1beacfc42c7 38 }
MikamiUitOpen 4:c1beacfc42c7 39
MikamiUitOpen 4:c1beacfc42c7 40 virtual struct dirent *readdir() {
MikamiUitOpen 4:c1beacfc42c7 41 FileBase *ptr = FileBase::get(n);
MikamiUitOpen 4:c1beacfc42c7 42 if (ptr == NULL) return NULL;
MikamiUitOpen 4:c1beacfc42c7 43
MikamiUitOpen 4:c1beacfc42c7 44 /* Increment n, so next readdir gets the next item */
MikamiUitOpen 4:c1beacfc42c7 45 n++;
MikamiUitOpen 4:c1beacfc42c7 46
MikamiUitOpen 4:c1beacfc42c7 47 /* Setup cur entry and return a pointer to it */
MikamiUitOpen 4:c1beacfc42c7 48 std::strncpy(cur_entry.d_name, ptr->getName(), NAME_MAX);
MikamiUitOpen 4:c1beacfc42c7 49 return &cur_entry;
MikamiUitOpen 4:c1beacfc42c7 50 }
MikamiUitOpen 4:c1beacfc42c7 51
MikamiUitOpen 4:c1beacfc42c7 52 virtual off_t telldir() {
MikamiUitOpen 4:c1beacfc42c7 53 return n;
MikamiUitOpen 4:c1beacfc42c7 54 }
MikamiUitOpen 4:c1beacfc42c7 55
MikamiUitOpen 4:c1beacfc42c7 56 virtual void seekdir(off_t offset) {
MikamiUitOpen 4:c1beacfc42c7 57 n = offset;
MikamiUitOpen 4:c1beacfc42c7 58 }
MikamiUitOpen 4:c1beacfc42c7 59
MikamiUitOpen 4:c1beacfc42c7 60 virtual void rewinddir() {
MikamiUitOpen 4:c1beacfc42c7 61 n = 0;
MikamiUitOpen 4:c1beacfc42c7 62 }
MikamiUitOpen 4:c1beacfc42c7 63 };
MikamiUitOpen 4:c1beacfc42c7 64
MikamiUitOpen 4:c1beacfc42c7 65 FileSystemLike::FileSystemLike(const char *name) : FileBase(name, FileSystemPathType) {
MikamiUitOpen 4:c1beacfc42c7 66
MikamiUitOpen 4:c1beacfc42c7 67 }
MikamiUitOpen 4:c1beacfc42c7 68
MikamiUitOpen 4:c1beacfc42c7 69 FileSystemLike::~FileSystemLike() {
MikamiUitOpen 4:c1beacfc42c7 70
MikamiUitOpen 4:c1beacfc42c7 71 }
MikamiUitOpen 4:c1beacfc42c7 72
MikamiUitOpen 4:c1beacfc42c7 73 DirHandle *FileSystemLike::opendir() {
MikamiUitOpen 4:c1beacfc42c7 74 return new BaseDirHandle();
MikamiUitOpen 4:c1beacfc42c7 75 }
MikamiUitOpen 4:c1beacfc42c7 76
MikamiUitOpen 4:c1beacfc42c7 77 } // namespace mbed