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/LocalFileSystem.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 "LocalFileSystem.h"
MikamiUitOpen 4:c1beacfc42c7 17
MikamiUitOpen 4:c1beacfc42c7 18 #if DEVICE_LOCALFILESYSTEM
MikamiUitOpen 4:c1beacfc42c7 19
MikamiUitOpen 4:c1beacfc42c7 20 #include "semihost_api.h"
MikamiUitOpen 4:c1beacfc42c7 21 #include <string.h>
MikamiUitOpen 4:c1beacfc42c7 22 #include <stdio.h>
MikamiUitOpen 4:c1beacfc42c7 23
MikamiUitOpen 4:c1beacfc42c7 24 namespace mbed {
MikamiUitOpen 4:c1beacfc42c7 25
MikamiUitOpen 4:c1beacfc42c7 26 /* Extension to FINFO type defined in RTL.h (in Keil RL) - adds 'create time'. */
MikamiUitOpen 4:c1beacfc42c7 27 typedef struct {
MikamiUitOpen 4:c1beacfc42c7 28 unsigned char hr; /* Hours [0..23] */
MikamiUitOpen 4:c1beacfc42c7 29 unsigned char min; /* Minutes [0..59] */
MikamiUitOpen 4:c1beacfc42c7 30 unsigned char sec; /* Seconds [0..59] */
MikamiUitOpen 4:c1beacfc42c7 31 unsigned char day; /* Day [1..31] */
MikamiUitOpen 4:c1beacfc42c7 32 unsigned char mon; /* Month [1..12] */
MikamiUitOpen 4:c1beacfc42c7 33 unsigned short year; /* Year [1980..2107] */
MikamiUitOpen 4:c1beacfc42c7 34 } FTIME;
MikamiUitOpen 4:c1beacfc42c7 35
MikamiUitOpen 4:c1beacfc42c7 36 typedef struct { /* File Search info record */
MikamiUitOpen 4:c1beacfc42c7 37 char name[32]; /* File name */
MikamiUitOpen 4:c1beacfc42c7 38 long size; /* File size in bytes */
MikamiUitOpen 4:c1beacfc42c7 39 int fileID; /* System File Identification */
MikamiUitOpen 4:c1beacfc42c7 40 FTIME create_time; /* Date & time file was created */
MikamiUitOpen 4:c1beacfc42c7 41 FTIME write_time; /* Date & time of last write */
MikamiUitOpen 4:c1beacfc42c7 42 } XFINFO;
MikamiUitOpen 4:c1beacfc42c7 43
MikamiUitOpen 4:c1beacfc42c7 44 #define RESERVED_FOR_USER_APPLICATIONS (0x100) /* 0x100 - 0x1ff */
MikamiUitOpen 4:c1beacfc42c7 45 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
MikamiUitOpen 4:c1beacfc42c7 46
MikamiUitOpen 4:c1beacfc42c7 47 static int xffind (const char *pattern, XFINFO *info) {
MikamiUitOpen 4:c1beacfc42c7 48 unsigned param[4];
MikamiUitOpen 4:c1beacfc42c7 49
MikamiUitOpen 4:c1beacfc42c7 50 param[0] = (unsigned long)pattern;
MikamiUitOpen 4:c1beacfc42c7 51 param[1] = (unsigned long)strlen(pattern);
MikamiUitOpen 4:c1beacfc42c7 52 param[2] = (unsigned long)info;
MikamiUitOpen 4:c1beacfc42c7 53 param[3] = (unsigned long)sizeof(XFINFO);
MikamiUitOpen 4:c1beacfc42c7 54
MikamiUitOpen 4:c1beacfc42c7 55 return __semihost(USR_XFFIND, param);
MikamiUitOpen 4:c1beacfc42c7 56 }
MikamiUitOpen 4:c1beacfc42c7 57
MikamiUitOpen 4:c1beacfc42c7 58 #define OPEN_R 0
MikamiUitOpen 4:c1beacfc42c7 59 #define OPEN_B 1
MikamiUitOpen 4:c1beacfc42c7 60 #define OPEN_PLUS 2
MikamiUitOpen 4:c1beacfc42c7 61 #define OPEN_W 4
MikamiUitOpen 4:c1beacfc42c7 62 #define OPEN_A 8
MikamiUitOpen 4:c1beacfc42c7 63 #define OPEN_INVALID -1
MikamiUitOpen 4:c1beacfc42c7 64
MikamiUitOpen 4:c1beacfc42c7 65 int posix_to_semihost_open_flags(int flags) {
MikamiUitOpen 4:c1beacfc42c7 66 /* POSIX flags -> semihosting open mode */
MikamiUitOpen 4:c1beacfc42c7 67 int openmode;
MikamiUitOpen 4:c1beacfc42c7 68 if (flags & O_RDWR) {
MikamiUitOpen 4:c1beacfc42c7 69 /* a plus mode */
MikamiUitOpen 4:c1beacfc42c7 70 openmode = OPEN_PLUS;
MikamiUitOpen 4:c1beacfc42c7 71 if (flags & O_APPEND) {
MikamiUitOpen 4:c1beacfc42c7 72 openmode |= OPEN_A;
MikamiUitOpen 4:c1beacfc42c7 73 } else if (flags & O_TRUNC) {
MikamiUitOpen 4:c1beacfc42c7 74 openmode |= OPEN_W;
MikamiUitOpen 4:c1beacfc42c7 75 } else {
MikamiUitOpen 4:c1beacfc42c7 76 openmode |= OPEN_R;
MikamiUitOpen 4:c1beacfc42c7 77 }
MikamiUitOpen 4:c1beacfc42c7 78 } else if (flags & O_WRONLY) {
MikamiUitOpen 4:c1beacfc42c7 79 /* write or append */
MikamiUitOpen 4:c1beacfc42c7 80 if (flags & O_APPEND) {
MikamiUitOpen 4:c1beacfc42c7 81 openmode = OPEN_A;
MikamiUitOpen 4:c1beacfc42c7 82 } else {
MikamiUitOpen 4:c1beacfc42c7 83 openmode = OPEN_W;
MikamiUitOpen 4:c1beacfc42c7 84 }
MikamiUitOpen 4:c1beacfc42c7 85 } else if (flags == O_RDONLY) {
MikamiUitOpen 4:c1beacfc42c7 86 /* read mode */
MikamiUitOpen 4:c1beacfc42c7 87 openmode = OPEN_R;
MikamiUitOpen 4:c1beacfc42c7 88 } else {
MikamiUitOpen 4:c1beacfc42c7 89 /* invalid flags */
MikamiUitOpen 4:c1beacfc42c7 90 openmode = OPEN_INVALID;
MikamiUitOpen 4:c1beacfc42c7 91 }
MikamiUitOpen 4:c1beacfc42c7 92
MikamiUitOpen 4:c1beacfc42c7 93 return openmode;
MikamiUitOpen 4:c1beacfc42c7 94 }
MikamiUitOpen 4:c1beacfc42c7 95
MikamiUitOpen 4:c1beacfc42c7 96 FILEHANDLE local_file_open(const char* name, int flags) {
MikamiUitOpen 4:c1beacfc42c7 97 int openmode = posix_to_semihost_open_flags(flags);
MikamiUitOpen 4:c1beacfc42c7 98 if (openmode == OPEN_INVALID) {
MikamiUitOpen 4:c1beacfc42c7 99 return (FILEHANDLE)NULL;
MikamiUitOpen 4:c1beacfc42c7 100 }
MikamiUitOpen 4:c1beacfc42c7 101
MikamiUitOpen 4:c1beacfc42c7 102 FILEHANDLE fh = semihost_open(name, openmode);
MikamiUitOpen 4:c1beacfc42c7 103 if (fh == -1) {
MikamiUitOpen 4:c1beacfc42c7 104 return (FILEHANDLE)NULL;
MikamiUitOpen 4:c1beacfc42c7 105 }
MikamiUitOpen 4:c1beacfc42c7 106
MikamiUitOpen 4:c1beacfc42c7 107 return fh;
MikamiUitOpen 4:c1beacfc42c7 108 }
MikamiUitOpen 4:c1beacfc42c7 109
MikamiUitOpen 4:c1beacfc42c7 110 LocalFileHandle::LocalFileHandle(FILEHANDLE fh) : _fh(fh), pos(0) {
MikamiUitOpen 4:c1beacfc42c7 111 }
MikamiUitOpen 4:c1beacfc42c7 112
MikamiUitOpen 4:c1beacfc42c7 113 int LocalFileHandle::close() {
MikamiUitOpen 4:c1beacfc42c7 114 int retval = semihost_close(_fh);
MikamiUitOpen 4:c1beacfc42c7 115 delete this;
MikamiUitOpen 4:c1beacfc42c7 116 return retval;
MikamiUitOpen 4:c1beacfc42c7 117 }
MikamiUitOpen 4:c1beacfc42c7 118
MikamiUitOpen 4:c1beacfc42c7 119 ssize_t LocalFileHandle::write(const void *buffer, size_t length) {
MikamiUitOpen 4:c1beacfc42c7 120 ssize_t n = semihost_write(_fh, (const unsigned char*)buffer, length, 0); // number of characters not written
MikamiUitOpen 4:c1beacfc42c7 121 n = length - n; // number of characters written
MikamiUitOpen 4:c1beacfc42c7 122 pos += n;
MikamiUitOpen 4:c1beacfc42c7 123 return n;
MikamiUitOpen 4:c1beacfc42c7 124 }
MikamiUitOpen 4:c1beacfc42c7 125
MikamiUitOpen 4:c1beacfc42c7 126 ssize_t LocalFileHandle::read(void *buffer, size_t length) {
MikamiUitOpen 4:c1beacfc42c7 127 ssize_t n = semihost_read(_fh, (unsigned char*)buffer, length, 0); // number of characters not read
MikamiUitOpen 4:c1beacfc42c7 128 n = length - n; // number of characters read
MikamiUitOpen 4:c1beacfc42c7 129 pos += n;
MikamiUitOpen 4:c1beacfc42c7 130 return n;
MikamiUitOpen 4:c1beacfc42c7 131 }
MikamiUitOpen 4:c1beacfc42c7 132
MikamiUitOpen 4:c1beacfc42c7 133 int LocalFileHandle::isatty() {
MikamiUitOpen 4:c1beacfc42c7 134 return semihost_istty(_fh);
MikamiUitOpen 4:c1beacfc42c7 135 }
MikamiUitOpen 4:c1beacfc42c7 136
MikamiUitOpen 4:c1beacfc42c7 137 off_t LocalFileHandle::lseek(off_t position, int whence) {
MikamiUitOpen 4:c1beacfc42c7 138 if (whence == SEEK_CUR) {
MikamiUitOpen 4:c1beacfc42c7 139 position += pos;
MikamiUitOpen 4:c1beacfc42c7 140 } else if (whence == SEEK_END) {
MikamiUitOpen 4:c1beacfc42c7 141 position += semihost_flen(_fh);
MikamiUitOpen 4:c1beacfc42c7 142 } /* otherwise SEEK_SET, so position is fine */
MikamiUitOpen 4:c1beacfc42c7 143
MikamiUitOpen 4:c1beacfc42c7 144 /* Always seems to return -1, so just ignore for now. */
MikamiUitOpen 4:c1beacfc42c7 145 semihost_seek(_fh, position);
MikamiUitOpen 4:c1beacfc42c7 146 pos = position;
MikamiUitOpen 4:c1beacfc42c7 147 return position;
MikamiUitOpen 4:c1beacfc42c7 148 }
MikamiUitOpen 4:c1beacfc42c7 149
MikamiUitOpen 4:c1beacfc42c7 150 int LocalFileHandle::fsync() {
MikamiUitOpen 4:c1beacfc42c7 151 return semihost_ensure(_fh);
MikamiUitOpen 4:c1beacfc42c7 152 }
MikamiUitOpen 4:c1beacfc42c7 153
MikamiUitOpen 4:c1beacfc42c7 154 off_t LocalFileHandle::flen() {
MikamiUitOpen 4:c1beacfc42c7 155 return semihost_flen(_fh);
MikamiUitOpen 4:c1beacfc42c7 156 }
MikamiUitOpen 4:c1beacfc42c7 157
MikamiUitOpen 4:c1beacfc42c7 158 class LocalDirHandle : public DirHandle {
MikamiUitOpen 4:c1beacfc42c7 159
MikamiUitOpen 4:c1beacfc42c7 160 public:
MikamiUitOpen 4:c1beacfc42c7 161 struct dirent cur_entry;
MikamiUitOpen 4:c1beacfc42c7 162 XFINFO info;
MikamiUitOpen 4:c1beacfc42c7 163
MikamiUitOpen 4:c1beacfc42c7 164 LocalDirHandle() : cur_entry(), info() {
MikamiUitOpen 4:c1beacfc42c7 165 }
MikamiUitOpen 4:c1beacfc42c7 166
MikamiUitOpen 4:c1beacfc42c7 167 virtual int closedir() {
MikamiUitOpen 4:c1beacfc42c7 168 delete this;
MikamiUitOpen 4:c1beacfc42c7 169 return 0;
MikamiUitOpen 4:c1beacfc42c7 170 }
MikamiUitOpen 4:c1beacfc42c7 171
MikamiUitOpen 4:c1beacfc42c7 172 virtual struct dirent *readdir() {
MikamiUitOpen 4:c1beacfc42c7 173 if (xffind("*", &info)!=0) {
MikamiUitOpen 4:c1beacfc42c7 174 return NULL;
MikamiUitOpen 4:c1beacfc42c7 175 }
MikamiUitOpen 4:c1beacfc42c7 176 memcpy(cur_entry.d_name, info.name, sizeof(info.name));
MikamiUitOpen 4:c1beacfc42c7 177 return &cur_entry;
MikamiUitOpen 4:c1beacfc42c7 178 }
MikamiUitOpen 4:c1beacfc42c7 179
MikamiUitOpen 4:c1beacfc42c7 180 virtual void rewinddir() {
MikamiUitOpen 4:c1beacfc42c7 181 info.fileID = 0;
MikamiUitOpen 4:c1beacfc42c7 182 }
MikamiUitOpen 4:c1beacfc42c7 183
MikamiUitOpen 4:c1beacfc42c7 184 virtual off_t telldir() {
MikamiUitOpen 4:c1beacfc42c7 185 return info.fileID;
MikamiUitOpen 4:c1beacfc42c7 186 }
MikamiUitOpen 4:c1beacfc42c7 187
MikamiUitOpen 4:c1beacfc42c7 188 virtual void seekdir(off_t offset) {
MikamiUitOpen 4:c1beacfc42c7 189 info.fileID = offset;
MikamiUitOpen 4:c1beacfc42c7 190 }
MikamiUitOpen 4:c1beacfc42c7 191 };
MikamiUitOpen 4:c1beacfc42c7 192
MikamiUitOpen 4:c1beacfc42c7 193 FileHandle *LocalFileSystem::open(const char* name, int flags) {
MikamiUitOpen 4:c1beacfc42c7 194 /* reject filenames with / in them */
MikamiUitOpen 4:c1beacfc42c7 195 for (const char *tmp = name; *tmp; tmp++) {
MikamiUitOpen 4:c1beacfc42c7 196 if (*tmp == '/') {
MikamiUitOpen 4:c1beacfc42c7 197 return NULL;
MikamiUitOpen 4:c1beacfc42c7 198 }
MikamiUitOpen 4:c1beacfc42c7 199 }
MikamiUitOpen 4:c1beacfc42c7 200
MikamiUitOpen 4:c1beacfc42c7 201 int openmode = posix_to_semihost_open_flags(flags);
MikamiUitOpen 4:c1beacfc42c7 202 if (openmode == OPEN_INVALID) {
MikamiUitOpen 4:c1beacfc42c7 203 return NULL;
MikamiUitOpen 4:c1beacfc42c7 204 }
MikamiUitOpen 4:c1beacfc42c7 205
MikamiUitOpen 4:c1beacfc42c7 206 FILEHANDLE fh = semihost_open(name, openmode);
MikamiUitOpen 4:c1beacfc42c7 207 if (fh == -1) {
MikamiUitOpen 4:c1beacfc42c7 208 return NULL;
MikamiUitOpen 4:c1beacfc42c7 209 }
MikamiUitOpen 4:c1beacfc42c7 210 return new LocalFileHandle(fh);
MikamiUitOpen 4:c1beacfc42c7 211 }
MikamiUitOpen 4:c1beacfc42c7 212
MikamiUitOpen 4:c1beacfc42c7 213 int LocalFileSystem::remove(const char *filename) {
MikamiUitOpen 4:c1beacfc42c7 214 return semihost_remove(filename);
MikamiUitOpen 4:c1beacfc42c7 215 }
MikamiUitOpen 4:c1beacfc42c7 216
MikamiUitOpen 4:c1beacfc42c7 217 DirHandle *LocalFileSystem::opendir(const char *name) {
MikamiUitOpen 4:c1beacfc42c7 218 return new LocalDirHandle();
MikamiUitOpen 4:c1beacfc42c7 219 }
MikamiUitOpen 4:c1beacfc42c7 220
MikamiUitOpen 4:c1beacfc42c7 221 } // namespace mbed
MikamiUitOpen 4:c1beacfc42c7 222
MikamiUitOpen 4:c1beacfc42c7 223 #endif