不韋 呂 / F746_AcousticEffector_MIC

Audio singal input and output example for DISCO-F746. Input: MEMS mic, Output: CN10 OUT, Acoustic effect: echo and frequency shift. DISCO-F746 によるオーディオ信号入出力．入力：MEMS マイク，出力：CN10 OUT，音響効果：エコー，周波数変換．

Dependencies:   F746_GUI F746_SAI_IO

mbed_src_STM32F7/common/LocalFileSystem.cpp@10:56f2f01df983, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 13:44:13 2017 +0000
Revision:
10:56f2f01df983
Parent:
6:38f7dce055d0 
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 6:38f7dce055d0 1 /* mbed Microcontroller Library
MikamiUitOpen 6:38f7dce055d0 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 6:38f7dce055d0 3 *
MikamiUitOpen 6:38f7dce055d0 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 6:38f7dce055d0 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 6:38f7dce055d0 6 * You may obtain a copy of the License at
MikamiUitOpen 6:38f7dce055d0 7 *
MikamiUitOpen 6:38f7dce055d0 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 6:38f7dce055d0 9 *
MikamiUitOpen 6:38f7dce055d0 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 6:38f7dce055d0 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 6:38f7dce055d0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 6:38f7dce055d0 13 * See the License for the specific language governing permissions and
MikamiUitOpen 6:38f7dce055d0 14 * limitations under the License.
MikamiUitOpen 6:38f7dce055d0 15 */
MikamiUitOpen 6:38f7dce055d0 16 #include "LocalFileSystem.h"
MikamiUitOpen 6:38f7dce055d0 17
MikamiUitOpen 6:38f7dce055d0 18 #if DEVICE_LOCALFILESYSTEM
MikamiUitOpen 6:38f7dce055d0 19
MikamiUitOpen 6:38f7dce055d0 20 #include "semihost_api.h"
MikamiUitOpen 6:38f7dce055d0 21 #include <string.h>
MikamiUitOpen 6:38f7dce055d0 22 #include <stdio.h>
MikamiUitOpen 6:38f7dce055d0 23
MikamiUitOpen 6:38f7dce055d0 24 namespace mbed {
MikamiUitOpen 6:38f7dce055d0 25
MikamiUitOpen 6:38f7dce055d0 26 /* Extension to FINFO type defined in RTL.h (in Keil RL) - adds 'create time'. */
MikamiUitOpen 6:38f7dce055d0 27 typedef struct {
MikamiUitOpen 6:38f7dce055d0 28 unsigned char hr; /* Hours [0..23] */
MikamiUitOpen 6:38f7dce055d0 29 unsigned char min; /* Minutes [0..59] */
MikamiUitOpen 6:38f7dce055d0 30 unsigned char sec; /* Seconds [0..59] */
MikamiUitOpen 6:38f7dce055d0 31 unsigned char day; /* Day [1..31] */
MikamiUitOpen 6:38f7dce055d0 32 unsigned char mon; /* Month [1..12] */
MikamiUitOpen 6:38f7dce055d0 33 unsigned short year; /* Year [1980..2107] */
MikamiUitOpen 6:38f7dce055d0 34 } FTIME;
MikamiUitOpen 6:38f7dce055d0 35
MikamiUitOpen 6:38f7dce055d0 36 typedef struct { /* File Search info record */
MikamiUitOpen 6:38f7dce055d0 37 char name[32]; /* File name */
MikamiUitOpen 6:38f7dce055d0 38 long size; /* File size in bytes */
MikamiUitOpen 6:38f7dce055d0 39 int fileID; /* System File Identification */
MikamiUitOpen 6:38f7dce055d0 40 FTIME create_time; /* Date & time file was created */
MikamiUitOpen 6:38f7dce055d0 41 FTIME write_time; /* Date & time of last write */
MikamiUitOpen 6:38f7dce055d0 42 } XFINFO;
MikamiUitOpen 6:38f7dce055d0 43
MikamiUitOpen 6:38f7dce055d0 44 #define RESERVED_FOR_USER_APPLICATIONS (0x100) /* 0x100 - 0x1ff */
MikamiUitOpen 6:38f7dce055d0 45 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
MikamiUitOpen 6:38f7dce055d0 46
MikamiUitOpen 6:38f7dce055d0 47 static int xffind (const char *pattern, XFINFO *info) {
MikamiUitOpen 6:38f7dce055d0 48 unsigned param[4];
MikamiUitOpen 6:38f7dce055d0 49
MikamiUitOpen 6:38f7dce055d0 50 param[0] = (unsigned long)pattern;
MikamiUitOpen 6:38f7dce055d0 51 param[1] = (unsigned long)strlen(pattern);
MikamiUitOpen 6:38f7dce055d0 52 param[2] = (unsigned long)info;
MikamiUitOpen 6:38f7dce055d0 53 param[3] = (unsigned long)sizeof(XFINFO);
MikamiUitOpen 6:38f7dce055d0 54
MikamiUitOpen 6:38f7dce055d0 55 return __semihost(USR_XFFIND, param);
MikamiUitOpen 6:38f7dce055d0 56 }
MikamiUitOpen 6:38f7dce055d0 57
MikamiUitOpen 6:38f7dce055d0 58 #define OPEN_R 0
MikamiUitOpen 6:38f7dce055d0 59 #define OPEN_B 1
MikamiUitOpen 6:38f7dce055d0 60 #define OPEN_PLUS 2
MikamiUitOpen 6:38f7dce055d0 61 #define OPEN_W 4
MikamiUitOpen 6:38f7dce055d0 62 #define OPEN_A 8
MikamiUitOpen 6:38f7dce055d0 63 #define OPEN_INVALID -1
MikamiUitOpen 6:38f7dce055d0 64
MikamiUitOpen 6:38f7dce055d0 65 int posix_to_semihost_open_flags(int flags) {
MikamiUitOpen 6:38f7dce055d0 66 /* POSIX flags -> semihosting open mode */
MikamiUitOpen 6:38f7dce055d0 67 int openmode;
MikamiUitOpen 6:38f7dce055d0 68 if (flags & O_RDWR) {
MikamiUitOpen 6:38f7dce055d0 69 /* a plus mode */
MikamiUitOpen 6:38f7dce055d0 70 openmode = OPEN_PLUS;
MikamiUitOpen 6:38f7dce055d0 71 if (flags & O_APPEND) {
MikamiUitOpen 6:38f7dce055d0 72 openmode |= OPEN_A;
MikamiUitOpen 6:38f7dce055d0 73 } else if (flags & O_TRUNC) {
MikamiUitOpen 6:38f7dce055d0 74 openmode |= OPEN_W;
MikamiUitOpen 6:38f7dce055d0 75 } else {
MikamiUitOpen 6:38f7dce055d0 76 openmode |= OPEN_R;
MikamiUitOpen 6:38f7dce055d0 77 }
MikamiUitOpen 6:38f7dce055d0 78 } else if (flags & O_WRONLY) {
MikamiUitOpen 6:38f7dce055d0 79 /* write or append */
MikamiUitOpen 6:38f7dce055d0 80 if (flags & O_APPEND) {
MikamiUitOpen 6:38f7dce055d0 81 openmode = OPEN_A;
MikamiUitOpen 6:38f7dce055d0 82 } else {
MikamiUitOpen 6:38f7dce055d0 83 openmode = OPEN_W;
MikamiUitOpen 6:38f7dce055d0 84 }
MikamiUitOpen 6:38f7dce055d0 85 } else if (flags == O_RDONLY) {
MikamiUitOpen 6:38f7dce055d0 86 /* read mode */
MikamiUitOpen 6:38f7dce055d0 87 openmode = OPEN_R;
MikamiUitOpen 6:38f7dce055d0 88 } else {
MikamiUitOpen 6:38f7dce055d0 89 /* invalid flags */
MikamiUitOpen 6:38f7dce055d0 90 openmode = OPEN_INVALID;
MikamiUitOpen 6:38f7dce055d0 91 }
MikamiUitOpen 6:38f7dce055d0 92
MikamiUitOpen 6:38f7dce055d0 93 return openmode;
MikamiUitOpen 6:38f7dce055d0 94 }
MikamiUitOpen 6:38f7dce055d0 95
MikamiUitOpen 6:38f7dce055d0 96 FILEHANDLE local_file_open(const char* name, int flags) {
MikamiUitOpen 6:38f7dce055d0 97 int openmode = posix_to_semihost_open_flags(flags);
MikamiUitOpen 6:38f7dce055d0 98 if (openmode == OPEN_INVALID) {
MikamiUitOpen 6:38f7dce055d0 99 return (FILEHANDLE)NULL;
MikamiUitOpen 6:38f7dce055d0 100 }
MikamiUitOpen 6:38f7dce055d0 101
MikamiUitOpen 6:38f7dce055d0 102 FILEHANDLE fh = semihost_open(name, openmode);
MikamiUitOpen 6:38f7dce055d0 103 if (fh == -1) {
MikamiUitOpen 6:38f7dce055d0 104 return (FILEHANDLE)NULL;
MikamiUitOpen 6:38f7dce055d0 105 }
MikamiUitOpen 6:38f7dce055d0 106
MikamiUitOpen 6:38f7dce055d0 107 return fh;
MikamiUitOpen 6:38f7dce055d0 108 }
MikamiUitOpen 6:38f7dce055d0 109
MikamiUitOpen 6:38f7dce055d0 110 LocalFileHandle::LocalFileHandle(FILEHANDLE fh) : _fh(fh), pos(0) {
MikamiUitOpen 6:38f7dce055d0 111 }
MikamiUitOpen 6:38f7dce055d0 112
MikamiUitOpen 6:38f7dce055d0 113 int LocalFileHandle::close() {
MikamiUitOpen 6:38f7dce055d0 114 int retval = semihost_close(_fh);
MikamiUitOpen 6:38f7dce055d0 115 delete this;
MikamiUitOpen 6:38f7dce055d0 116 return retval;
MikamiUitOpen 6:38f7dce055d0 117 }
MikamiUitOpen 6:38f7dce055d0 118
MikamiUitOpen 6:38f7dce055d0 119 ssize_t LocalFileHandle::write(const void *buffer, size_t length) {
MikamiUitOpen 6:38f7dce055d0 120 ssize_t n = semihost_write(_fh, (const unsigned char*)buffer, length, 0); // number of characters not written
MikamiUitOpen 6:38f7dce055d0 121 n = length - n; // number of characters written
MikamiUitOpen 6:38f7dce055d0 122 pos += n;
MikamiUitOpen 6:38f7dce055d0 123 return n;
MikamiUitOpen 6:38f7dce055d0 124 }
MikamiUitOpen 6:38f7dce055d0 125
MikamiUitOpen 6:38f7dce055d0 126 ssize_t LocalFileHandle::read(void *buffer, size_t length) {
MikamiUitOpen 6:38f7dce055d0 127 ssize_t n = semihost_read(_fh, (unsigned char*)buffer, length, 0); // number of characters not read
MikamiUitOpen 6:38f7dce055d0 128 n = length - n; // number of characters read
MikamiUitOpen 6:38f7dce055d0 129 pos += n;
MikamiUitOpen 6:38f7dce055d0 130 return n;
MikamiUitOpen 6:38f7dce055d0 131 }
MikamiUitOpen 6:38f7dce055d0 132
MikamiUitOpen 6:38f7dce055d0 133 int LocalFileHandle::isatty() {
MikamiUitOpen 6:38f7dce055d0 134 return semihost_istty(_fh);
MikamiUitOpen 6:38f7dce055d0 135 }
MikamiUitOpen 6:38f7dce055d0 136
MikamiUitOpen 6:38f7dce055d0 137 off_t LocalFileHandle::lseek(off_t position, int whence) {
MikamiUitOpen 6:38f7dce055d0 138 if (whence == SEEK_CUR) {
MikamiUitOpen 6:38f7dce055d0 139 position += pos;
MikamiUitOpen 6:38f7dce055d0 140 } else if (whence == SEEK_END) {
MikamiUitOpen 6:38f7dce055d0 141 position += semihost_flen(_fh);
MikamiUitOpen 6:38f7dce055d0 142 } /* otherwise SEEK_SET, so position is fine */
MikamiUitOpen 6:38f7dce055d0 143
MikamiUitOpen 6:38f7dce055d0 144 /* Always seems to return -1, so just ignore for now. */
MikamiUitOpen 6:38f7dce055d0 145 semihost_seek(_fh, position);
MikamiUitOpen 6:38f7dce055d0 146 pos = position;
MikamiUitOpen 6:38f7dce055d0 147 return position;
MikamiUitOpen 6:38f7dce055d0 148 }
MikamiUitOpen 6:38f7dce055d0 149
MikamiUitOpen 6:38f7dce055d0 150 int LocalFileHandle::fsync() {
MikamiUitOpen 6:38f7dce055d0 151 return semihost_ensure(_fh);
MikamiUitOpen 6:38f7dce055d0 152 }
MikamiUitOpen 6:38f7dce055d0 153
MikamiUitOpen 6:38f7dce055d0 154 off_t LocalFileHandle::flen() {
MikamiUitOpen 6:38f7dce055d0 155 return semihost_flen(_fh);
MikamiUitOpen 6:38f7dce055d0 156 }
MikamiUitOpen 6:38f7dce055d0 157
MikamiUitOpen 6:38f7dce055d0 158 class LocalDirHandle : public DirHandle {
MikamiUitOpen 6:38f7dce055d0 159
MikamiUitOpen 6:38f7dce055d0 160 public:
MikamiUitOpen 6:38f7dce055d0 161 struct dirent cur_entry;
MikamiUitOpen 6:38f7dce055d0 162 XFINFO info;
MikamiUitOpen 6:38f7dce055d0 163
MikamiUitOpen 6:38f7dce055d0 164 LocalDirHandle() : cur_entry(), info() {
MikamiUitOpen 6:38f7dce055d0 165 }
MikamiUitOpen 6:38f7dce055d0 166
MikamiUitOpen 6:38f7dce055d0 167 virtual int closedir() {
MikamiUitOpen 6:38f7dce055d0 168 delete this;
MikamiUitOpen 6:38f7dce055d0 169 return 0;
MikamiUitOpen 6:38f7dce055d0 170 }
MikamiUitOpen 6:38f7dce055d0 171
MikamiUitOpen 6:38f7dce055d0 172 virtual struct dirent *readdir() {
MikamiUitOpen 6:38f7dce055d0 173 if (xffind("*", &info)!=0) {
MikamiUitOpen 6:38f7dce055d0 174 return NULL;
MikamiUitOpen 6:38f7dce055d0 175 }
MikamiUitOpen 6:38f7dce055d0 176 memcpy(cur_entry.d_name, info.name, sizeof(info.name));
MikamiUitOpen 6:38f7dce055d0 177 return &cur_entry;
MikamiUitOpen 6:38f7dce055d0 178 }
MikamiUitOpen 6:38f7dce055d0 179
MikamiUitOpen 6:38f7dce055d0 180 virtual void rewinddir() {
MikamiUitOpen 6:38f7dce055d0 181 info.fileID = 0;
MikamiUitOpen 6:38f7dce055d0 182 }
MikamiUitOpen 6:38f7dce055d0 183
MikamiUitOpen 6:38f7dce055d0 184 virtual off_t telldir() {
MikamiUitOpen 6:38f7dce055d0 185 return info.fileID;
MikamiUitOpen 6:38f7dce055d0 186 }
MikamiUitOpen 6:38f7dce055d0 187
MikamiUitOpen 6:38f7dce055d0 188 virtual void seekdir(off_t offset) {
MikamiUitOpen 6:38f7dce055d0 189 info.fileID = offset;
MikamiUitOpen 6:38f7dce055d0 190 }
MikamiUitOpen 6:38f7dce055d0 191 };
MikamiUitOpen 6:38f7dce055d0 192
MikamiUitOpen 6:38f7dce055d0 193 FileHandle *LocalFileSystem::open(const char* name, int flags) {
MikamiUitOpen 6:38f7dce055d0 194 /* reject filenames with / in them */
MikamiUitOpen 6:38f7dce055d0 195 for (const char *tmp = name; *tmp; tmp++) {
MikamiUitOpen 6:38f7dce055d0 196 if (*tmp == '/') {
MikamiUitOpen 6:38f7dce055d0 197 return NULL;
MikamiUitOpen 6:38f7dce055d0 198 }
MikamiUitOpen 6:38f7dce055d0 199 }
MikamiUitOpen 6:38f7dce055d0 200
MikamiUitOpen 6:38f7dce055d0 201 int openmode = posix_to_semihost_open_flags(flags);
MikamiUitOpen 6:38f7dce055d0 202 if (openmode == OPEN_INVALID) {
MikamiUitOpen 6:38f7dce055d0 203 return NULL;
MikamiUitOpen 6:38f7dce055d0 204 }
MikamiUitOpen 6:38f7dce055d0 205
MikamiUitOpen 6:38f7dce055d0 206 FILEHANDLE fh = semihost_open(name, openmode);
MikamiUitOpen 6:38f7dce055d0 207 if (fh == -1) {
MikamiUitOpen 6:38f7dce055d0 208 return NULL;
MikamiUitOpen 6:38f7dce055d0 209 }
MikamiUitOpen 6:38f7dce055d0 210 return new LocalFileHandle(fh);
MikamiUitOpen 6:38f7dce055d0 211 }
MikamiUitOpen 6:38f7dce055d0 212
MikamiUitOpen 6:38f7dce055d0 213 int LocalFileSystem::remove(const char *filename) {
MikamiUitOpen 6:38f7dce055d0 214 return semihost_remove(filename);
MikamiUitOpen 6:38f7dce055d0 215 }
MikamiUitOpen 6:38f7dce055d0 216
MikamiUitOpen 6:38f7dce055d0 217 DirHandle *LocalFileSystem::opendir(const char *name) {
MikamiUitOpen 6:38f7dce055d0 218 return new LocalDirHandle();
MikamiUitOpen 6:38f7dce055d0 219 }
MikamiUitOpen 6:38f7dce055d0 220
MikamiUitOpen 6:38f7dce055d0 221 } // namespace mbed
MikamiUitOpen 6:38f7dce055d0 222
MikamiUitOpen 6:38f7dce055d0 223 #endif