不韋 呂 / F746_SD_VarableFilter

SD card player with variable cotoff frequency lowpass and highpass IIR filter. SD カードの *.wav ファイルのオーディオ信号を，遮断周波数可変 IIR 低域通過および高域通過フィルタを通して，ボードに搭載されているCODEC で出力する．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8月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO FrequencyResponseDrawer SD_PlayerSkeleton

mbed_src_STM32F7/api/FileBase.h@2:dcaee06f6ccb, 2016-10-02 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 02 10:40:44 2016 +0000
Revision:
2:dcaee06f6ccb
3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:dcaee06f6ccb 1 /* mbed Microcontroller Library
MikamiUitOpen 2:dcaee06f6ccb 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 2:dcaee06f6ccb 3 *
MikamiUitOpen 2:dcaee06f6ccb 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:dcaee06f6ccb 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:dcaee06f6ccb 6 * You may obtain a copy of the License at
MikamiUitOpen 2:dcaee06f6ccb 7 *
MikamiUitOpen 2:dcaee06f6ccb 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:dcaee06f6ccb 9 *
MikamiUitOpen 2:dcaee06f6ccb 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:dcaee06f6ccb 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:dcaee06f6ccb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:dcaee06f6ccb 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:dcaee06f6ccb 14 * limitations under the License.
MikamiUitOpen 2:dcaee06f6ccb 15 */
MikamiUitOpen 2:dcaee06f6ccb 16 #ifndef MBED_FILEBASE_H
MikamiUitOpen 2:dcaee06f6ccb 17 #define MBED_FILEBASE_H
MikamiUitOpen 2:dcaee06f6ccb 18
MikamiUitOpen 2:dcaee06f6ccb 19 typedef int FILEHANDLE;
MikamiUitOpen 2:dcaee06f6ccb 20
MikamiUitOpen 2:dcaee06f6ccb 21 #include <stdio.h>
MikamiUitOpen 2:dcaee06f6ccb 22
MikamiUitOpen 2:dcaee06f6ccb 23 #if defined(__ARMCC_VERSION) || defined(__ICCARM__)
MikamiUitOpen 2:dcaee06f6ccb 24 # define O_RDONLY 0
MikamiUitOpen 2:dcaee06f6ccb 25 # define O_WRONLY 1
MikamiUitOpen 2:dcaee06f6ccb 26 # define O_RDWR 2
MikamiUitOpen 2:dcaee06f6ccb 27 # define O_CREAT 0x0200
MikamiUitOpen 2:dcaee06f6ccb 28 # define O_TRUNC 0x0400
MikamiUitOpen 2:dcaee06f6ccb 29 # define O_APPEND 0x0008
MikamiUitOpen 2:dcaee06f6ccb 30
MikamiUitOpen 2:dcaee06f6ccb 31 # define NAME_MAX 255
MikamiUitOpen 2:dcaee06f6ccb 32
MikamiUitOpen 2:dcaee06f6ccb 33 typedef int mode_t;
MikamiUitOpen 2:dcaee06f6ccb 34 typedef int ssize_t;
MikamiUitOpen 2:dcaee06f6ccb 35 typedef long off_t;
MikamiUitOpen 2:dcaee06f6ccb 36
MikamiUitOpen 2:dcaee06f6ccb 37 #else
MikamiUitOpen 2:dcaee06f6ccb 38 # include <sys/fcntl.h>
MikamiUitOpen 2:dcaee06f6ccb 39 # include <sys/types.h>
MikamiUitOpen 2:dcaee06f6ccb 40 # include <sys/syslimits.h>
MikamiUitOpen 2:dcaee06f6ccb 41 #endif
MikamiUitOpen 2:dcaee06f6ccb 42
MikamiUitOpen 2:dcaee06f6ccb 43 #include "platform.h"
MikamiUitOpen 2:dcaee06f6ccb 44
MikamiUitOpen 2:dcaee06f6ccb 45 namespace mbed {
MikamiUitOpen 2:dcaee06f6ccb 46
MikamiUitOpen 2:dcaee06f6ccb 47 typedef enum {
MikamiUitOpen 2:dcaee06f6ccb 48 FilePathType,
MikamiUitOpen 2:dcaee06f6ccb 49 FileSystemPathType
MikamiUitOpen 2:dcaee06f6ccb 50 } PathType;
MikamiUitOpen 2:dcaee06f6ccb 51
MikamiUitOpen 2:dcaee06f6ccb 52 class FileBase {
MikamiUitOpen 2:dcaee06f6ccb 53 public:
MikamiUitOpen 2:dcaee06f6ccb 54 FileBase(const char *name, PathType t);
MikamiUitOpen 2:dcaee06f6ccb 55
MikamiUitOpen 2:dcaee06f6ccb 56 virtual ~FileBase();
MikamiUitOpen 2:dcaee06f6ccb 57
MikamiUitOpen 2:dcaee06f6ccb 58 const char* getName(void);
MikamiUitOpen 2:dcaee06f6ccb 59 PathType getPathType(void);
MikamiUitOpen 2:dcaee06f6ccb 60
MikamiUitOpen 2:dcaee06f6ccb 61 static FileBase *lookup(const char *name, unsigned int len);
MikamiUitOpen 2:dcaee06f6ccb 62
MikamiUitOpen 2:dcaee06f6ccb 63 static FileBase *get(int n);
MikamiUitOpen 2:dcaee06f6ccb 64
MikamiUitOpen 2:dcaee06f6ccb 65 protected:
MikamiUitOpen 2:dcaee06f6ccb 66 static FileBase *_head;
MikamiUitOpen 2:dcaee06f6ccb 67
MikamiUitOpen 2:dcaee06f6ccb 68 FileBase *_next;
MikamiUitOpen 2:dcaee06f6ccb 69 const char *_name;
MikamiUitOpen 2:dcaee06f6ccb 70 PathType _path_type;
MikamiUitOpen 2:dcaee06f6ccb 71
MikamiUitOpen 2:dcaee06f6ccb 72 /* disallow copy constructor and assignment operators */
MikamiUitOpen 2:dcaee06f6ccb 73 private:
MikamiUitOpen 2:dcaee06f6ccb 74 FileBase(const FileBase&);
MikamiUitOpen 2:dcaee06f6ccb 75 FileBase & operator = (const FileBase&);
MikamiUitOpen 2:dcaee06f6ccb 76 };
MikamiUitOpen 2:dcaee06f6ccb 77
MikamiUitOpen 2:dcaee06f6ccb 78 } // namespace mbed
MikamiUitOpen 2:dcaee06f6ccb 79
MikamiUitOpen 2:dcaee06f6ccb 80 #endif