philippe s. / mbed-dev

mbed library sources. Supersedes mbed-src. Fixes analogIn and analogOut problems for TARGET_STM32F3. Tested on NUCLEO-F303K8, using 3 analogout and 7 analogin channels simultaneously. Added ability for STM32F334R8 and STM32F303K8 to use all three channels of DAC simultaneously. https://developer.mbed.org/users/StevieWray/code/mbed-dev/ Added ability for TARGET_STM32F3 to use more than one ADC simultaneously. https://developer.mbed.org/questions/67997/NUCLEO-F303K8ADC/

Fork of mbed-dev by mbed official

common/LocalFileSystem.cpp@70:b3a5af880266, 2016-02-23 (annotated)

Committer:
neurofun
Date:
Tue Feb 23 21:59:35 2016 +0000
Revision:
70:b3a5af880266
Parent:
0:9b334a45a8ff 
Edited DAC routines to allow for the simultaneous use of three channels from two DACs as seen on the STM32F334R8 and STM32F303K8. Edited ADC routines to allow for the simultaneous use of more than one ADC.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "LocalFileSystem.h"
bogdanm 0:9b334a45a8ff 17
bogdanm 0:9b334a45a8ff 18 #if DEVICE_LOCALFILESYSTEM
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 #include "semihost_api.h"
bogdanm 0:9b334a45a8ff 21 #include <string.h>
bogdanm 0:9b334a45a8ff 22 #include <stdio.h>
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 namespace mbed {
bogdanm 0:9b334a45a8ff 25
bogdanm 0:9b334a45a8ff 26 /* Extension to FINFO type defined in RTL.h (in Keil RL) - adds 'create time'. */
bogdanm 0:9b334a45a8ff 27 typedef struct {
bogdanm 0:9b334a45a8ff 28 unsigned char hr; /* Hours [0..23] */
bogdanm 0:9b334a45a8ff 29 unsigned char min; /* Minutes [0..59] */
bogdanm 0:9b334a45a8ff 30 unsigned char sec; /* Seconds [0..59] */
bogdanm 0:9b334a45a8ff 31 unsigned char day; /* Day [1..31] */
bogdanm 0:9b334a45a8ff 32 unsigned char mon; /* Month [1..12] */
bogdanm 0:9b334a45a8ff 33 unsigned short year; /* Year [1980..2107] */
bogdanm 0:9b334a45a8ff 34 } FTIME;
bogdanm 0:9b334a45a8ff 35
bogdanm 0:9b334a45a8ff 36 typedef struct { /* File Search info record */
bogdanm 0:9b334a45a8ff 37 char name[32]; /* File name */
bogdanm 0:9b334a45a8ff 38 long size; /* File size in bytes */
bogdanm 0:9b334a45a8ff 39 int fileID; /* System File Identification */
bogdanm 0:9b334a45a8ff 40 FTIME create_time; /* Date & time file was created */
bogdanm 0:9b334a45a8ff 41 FTIME write_time; /* Date & time of last write */
bogdanm 0:9b334a45a8ff 42 } XFINFO;
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 #define RESERVED_FOR_USER_APPLICATIONS (0x100) /* 0x100 - 0x1ff */
bogdanm 0:9b334a45a8ff 45 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
bogdanm 0:9b334a45a8ff 46
bogdanm 0:9b334a45a8ff 47 static int xffind (const char *pattern, XFINFO *info) {
bogdanm 0:9b334a45a8ff 48 unsigned param[4];
bogdanm 0:9b334a45a8ff 49
bogdanm 0:9b334a45a8ff 50 param[0] = (unsigned long)pattern;
bogdanm 0:9b334a45a8ff 51 param[1] = (unsigned long)strlen(pattern);
bogdanm 0:9b334a45a8ff 52 param[2] = (unsigned long)info;
bogdanm 0:9b334a45a8ff 53 param[3] = (unsigned long)sizeof(XFINFO);
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 return __semihost(USR_XFFIND, param);
bogdanm 0:9b334a45a8ff 56 }
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 #define OPEN_R 0
bogdanm 0:9b334a45a8ff 59 #define OPEN_B 1
bogdanm 0:9b334a45a8ff 60 #define OPEN_PLUS 2
bogdanm 0:9b334a45a8ff 61 #define OPEN_W 4
bogdanm 0:9b334a45a8ff 62 #define OPEN_A 8
bogdanm 0:9b334a45a8ff 63 #define OPEN_INVALID -1
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 int posix_to_semihost_open_flags(int flags) {
bogdanm 0:9b334a45a8ff 66 /* POSIX flags -> semihosting open mode */
bogdanm 0:9b334a45a8ff 67 int openmode;
bogdanm 0:9b334a45a8ff 68 if (flags & O_RDWR) {
bogdanm 0:9b334a45a8ff 69 /* a plus mode */
bogdanm 0:9b334a45a8ff 70 openmode = OPEN_PLUS;
bogdanm 0:9b334a45a8ff 71 if (flags & O_APPEND) {
bogdanm 0:9b334a45a8ff 72 openmode |= OPEN_A;
bogdanm 0:9b334a45a8ff 73 } else if (flags & O_TRUNC) {
bogdanm 0:9b334a45a8ff 74 openmode |= OPEN_W;
bogdanm 0:9b334a45a8ff 75 } else {
bogdanm 0:9b334a45a8ff 76 openmode |= OPEN_R;
bogdanm 0:9b334a45a8ff 77 }
bogdanm 0:9b334a45a8ff 78 } else if (flags & O_WRONLY) {
bogdanm 0:9b334a45a8ff 79 /* write or append */
bogdanm 0:9b334a45a8ff 80 if (flags & O_APPEND) {
bogdanm 0:9b334a45a8ff 81 openmode = OPEN_A;
bogdanm 0:9b334a45a8ff 82 } else {
bogdanm 0:9b334a45a8ff 83 openmode = OPEN_W;
bogdanm 0:9b334a45a8ff 84 }
bogdanm 0:9b334a45a8ff 85 } else if (flags == O_RDONLY) {
bogdanm 0:9b334a45a8ff 86 /* read mode */
bogdanm 0:9b334a45a8ff 87 openmode = OPEN_R;
bogdanm 0:9b334a45a8ff 88 } else {
bogdanm 0:9b334a45a8ff 89 /* invalid flags */
bogdanm 0:9b334a45a8ff 90 openmode = OPEN_INVALID;
bogdanm 0:9b334a45a8ff 91 }
bogdanm 0:9b334a45a8ff 92
bogdanm 0:9b334a45a8ff 93 return openmode;
bogdanm 0:9b334a45a8ff 94 }
bogdanm 0:9b334a45a8ff 95
bogdanm 0:9b334a45a8ff 96 FILEHANDLE local_file_open(const char* name, int flags) {
bogdanm 0:9b334a45a8ff 97 int openmode = posix_to_semihost_open_flags(flags);
bogdanm 0:9b334a45a8ff 98 if (openmode == OPEN_INVALID) {
bogdanm 0:9b334a45a8ff 99 return (FILEHANDLE)NULL;
bogdanm 0:9b334a45a8ff 100 }
bogdanm 0:9b334a45a8ff 101
bogdanm 0:9b334a45a8ff 102 FILEHANDLE fh = semihost_open(name, openmode);
bogdanm 0:9b334a45a8ff 103 if (fh == -1) {
bogdanm 0:9b334a45a8ff 104 return (FILEHANDLE)NULL;
bogdanm 0:9b334a45a8ff 105 }
bogdanm 0:9b334a45a8ff 106
bogdanm 0:9b334a45a8ff 107 return fh;
bogdanm 0:9b334a45a8ff 108 }
bogdanm 0:9b334a45a8ff 109
bogdanm 0:9b334a45a8ff 110 LocalFileHandle::LocalFileHandle(FILEHANDLE fh) : _fh(fh), pos(0) {
bogdanm 0:9b334a45a8ff 111 }
bogdanm 0:9b334a45a8ff 112
bogdanm 0:9b334a45a8ff 113 int LocalFileHandle::close() {
bogdanm 0:9b334a45a8ff 114 int retval = semihost_close(_fh);
bogdanm 0:9b334a45a8ff 115 delete this;
bogdanm 0:9b334a45a8ff 116 return retval;
bogdanm 0:9b334a45a8ff 117 }
bogdanm 0:9b334a45a8ff 118
bogdanm 0:9b334a45a8ff 119 ssize_t LocalFileHandle::write(const void *buffer, size_t length) {
bogdanm 0:9b334a45a8ff 120 ssize_t n = semihost_write(_fh, (const unsigned char*)buffer, length, 0); // number of characters not written
bogdanm 0:9b334a45a8ff 121 n = length - n; // number of characters written
bogdanm 0:9b334a45a8ff 122 pos += n;
bogdanm 0:9b334a45a8ff 123 return n;
bogdanm 0:9b334a45a8ff 124 }
bogdanm 0:9b334a45a8ff 125
bogdanm 0:9b334a45a8ff 126 ssize_t LocalFileHandle::read(void *buffer, size_t length) {
bogdanm 0:9b334a45a8ff 127 ssize_t n = semihost_read(_fh, (unsigned char*)buffer, length, 0); // number of characters not read
bogdanm 0:9b334a45a8ff 128 n = length - n; // number of characters read
bogdanm 0:9b334a45a8ff 129 pos += n;
bogdanm 0:9b334a45a8ff 130 return n;
bogdanm 0:9b334a45a8ff 131 }
bogdanm 0:9b334a45a8ff 132
bogdanm 0:9b334a45a8ff 133 int LocalFileHandle::isatty() {
bogdanm 0:9b334a45a8ff 134 return semihost_istty(_fh);
bogdanm 0:9b334a45a8ff 135 }
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 off_t LocalFileHandle::lseek(off_t position, int whence) {
bogdanm 0:9b334a45a8ff 138 if (whence == SEEK_CUR) {
bogdanm 0:9b334a45a8ff 139 position += pos;
bogdanm 0:9b334a45a8ff 140 } else if (whence == SEEK_END) {
bogdanm 0:9b334a45a8ff 141 position += semihost_flen(_fh);
bogdanm 0:9b334a45a8ff 142 } /* otherwise SEEK_SET, so position is fine */
bogdanm 0:9b334a45a8ff 143
bogdanm 0:9b334a45a8ff 144 /* Always seems to return -1, so just ignore for now. */
bogdanm 0:9b334a45a8ff 145 semihost_seek(_fh, position);
bogdanm 0:9b334a45a8ff 146 pos = position;
bogdanm 0:9b334a45a8ff 147 return position;
bogdanm 0:9b334a45a8ff 148 }
bogdanm 0:9b334a45a8ff 149
bogdanm 0:9b334a45a8ff 150 int LocalFileHandle::fsync() {
bogdanm 0:9b334a45a8ff 151 return semihost_ensure(_fh);
bogdanm 0:9b334a45a8ff 152 }
bogdanm 0:9b334a45a8ff 153
bogdanm 0:9b334a45a8ff 154 off_t LocalFileHandle::flen() {
bogdanm 0:9b334a45a8ff 155 return semihost_flen(_fh);
bogdanm 0:9b334a45a8ff 156 }
bogdanm 0:9b334a45a8ff 157
bogdanm 0:9b334a45a8ff 158 class LocalDirHandle : public DirHandle {
bogdanm 0:9b334a45a8ff 159
bogdanm 0:9b334a45a8ff 160 public:
bogdanm 0:9b334a45a8ff 161 struct dirent cur_entry;
bogdanm 0:9b334a45a8ff 162 XFINFO info;
bogdanm 0:9b334a45a8ff 163
bogdanm 0:9b334a45a8ff 164 LocalDirHandle() : cur_entry(), info() {
bogdanm 0:9b334a45a8ff 165 }
bogdanm 0:9b334a45a8ff 166
bogdanm 0:9b334a45a8ff 167 virtual int closedir() {
bogdanm 0:9b334a45a8ff 168 delete this;
bogdanm 0:9b334a45a8ff 169 return 0;
bogdanm 0:9b334a45a8ff 170 }
bogdanm 0:9b334a45a8ff 171
bogdanm 0:9b334a45a8ff 172 virtual struct dirent *readdir() {
bogdanm 0:9b334a45a8ff 173 if (xffind("*", &info)!=0) {
bogdanm 0:9b334a45a8ff 174 return NULL;
bogdanm 0:9b334a45a8ff 175 }
bogdanm 0:9b334a45a8ff 176 memcpy(cur_entry.d_name, info.name, sizeof(info.name));
bogdanm 0:9b334a45a8ff 177 return &cur_entry;
bogdanm 0:9b334a45a8ff 178 }
bogdanm 0:9b334a45a8ff 179
bogdanm 0:9b334a45a8ff 180 virtual void rewinddir() {
bogdanm 0:9b334a45a8ff 181 info.fileID = 0;
bogdanm 0:9b334a45a8ff 182 }
bogdanm 0:9b334a45a8ff 183
bogdanm 0:9b334a45a8ff 184 virtual off_t telldir() {
bogdanm 0:9b334a45a8ff 185 return info.fileID;
bogdanm 0:9b334a45a8ff 186 }
bogdanm 0:9b334a45a8ff 187
bogdanm 0:9b334a45a8ff 188 virtual void seekdir(off_t offset) {
bogdanm 0:9b334a45a8ff 189 info.fileID = offset;
bogdanm 0:9b334a45a8ff 190 }
bogdanm 0:9b334a45a8ff 191 };
bogdanm 0:9b334a45a8ff 192
bogdanm 0:9b334a45a8ff 193 FileHandle *LocalFileSystem::open(const char* name, int flags) {
bogdanm 0:9b334a45a8ff 194 /* reject filenames with / in them */
bogdanm 0:9b334a45a8ff 195 for (const char *tmp = name; *tmp; tmp++) {
bogdanm 0:9b334a45a8ff 196 if (*tmp == '/') {
bogdanm 0:9b334a45a8ff 197 return NULL;
bogdanm 0:9b334a45a8ff 198 }
bogdanm 0:9b334a45a8ff 199 }
bogdanm 0:9b334a45a8ff 200
bogdanm 0:9b334a45a8ff 201 int openmode = posix_to_semihost_open_flags(flags);
bogdanm 0:9b334a45a8ff 202 if (openmode == OPEN_INVALID) {
bogdanm 0:9b334a45a8ff 203 return NULL;
bogdanm 0:9b334a45a8ff 204 }
bogdanm 0:9b334a45a8ff 205
bogdanm 0:9b334a45a8ff 206 FILEHANDLE fh = semihost_open(name, openmode);
bogdanm 0:9b334a45a8ff 207 if (fh == -1) {
bogdanm 0:9b334a45a8ff 208 return NULL;
bogdanm 0:9b334a45a8ff 209 }
bogdanm 0:9b334a45a8ff 210 return new LocalFileHandle(fh);
bogdanm 0:9b334a45a8ff 211 }
bogdanm 0:9b334a45a8ff 212
bogdanm 0:9b334a45a8ff 213 int LocalFileSystem::remove(const char *filename) {
bogdanm 0:9b334a45a8ff 214 return semihost_remove(filename);
bogdanm 0:9b334a45a8ff 215 }
bogdanm 0:9b334a45a8ff 216
bogdanm 0:9b334a45a8ff 217 DirHandle *LocalFileSystem::opendir(const char *name) {
bogdanm 0:9b334a45a8ff 218 return new LocalDirHandle();
bogdanm 0:9b334a45a8ff 219 }
bogdanm 0:9b334a45a8ff 220
bogdanm 0:9b334a45a8ff 221 } // namespace mbed
bogdanm 0:9b334a45a8ff 222
bogdanm 0:9b334a45a8ff 223 #endif