DSP Book Yeditepe / mbed_f401re

mbed library sources with internal temperature sensor for nucleo f401

common/FileSystemLike.cpp@0:7e2bd16f80af, 2015-01-17 (annotated)

Committer:
elessair
Date:
Sat Jan 17 18:03:58 2015 +0000
Revision:
0:7e2bd16f80af
nucleo f401re internal temperature added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:7e2bd16f80af 1 /* mbed Microcontroller Library
elessair 0:7e2bd16f80af 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:7e2bd16f80af 3 *
elessair 0:7e2bd16f80af 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:7e2bd16f80af 5 * you may not use this file except in compliance with the License.
elessair 0:7e2bd16f80af 6 * You may obtain a copy of the License at
elessair 0:7e2bd16f80af 7 *
elessair 0:7e2bd16f80af 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:7e2bd16f80af 9 *
elessair 0:7e2bd16f80af 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:7e2bd16f80af 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:7e2bd16f80af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:7e2bd16f80af 13 * See the License for the specific language governing permissions and
elessair 0:7e2bd16f80af 14 * limitations under the License.
elessair 0:7e2bd16f80af 15 */
elessair 0:7e2bd16f80af 16 #include "FileSystemLike.h"
elessair 0:7e2bd16f80af 17
elessair 0:7e2bd16f80af 18 namespace mbed {
elessair 0:7e2bd16f80af 19
elessair 0:7e2bd16f80af 20 class BaseDirHandle : public DirHandle {
elessair 0:7e2bd16f80af 21 public:
elessair 0:7e2bd16f80af 22 /*
elessair 0:7e2bd16f80af 23 We keep track of our current location as the n'th object in the
elessair 0:7e2bd16f80af 24 FileSystemLike list. Using a Base* instead would cause problems if that
elessair 0:7e2bd16f80af 25 object were to be destroyed between readdirs.
elessair 0:7e2bd16f80af 26 Using this method does mean though that destroying/creating objects can
elessair 0:7e2bd16f80af 27 give unusual results from readdir.
elessair 0:7e2bd16f80af 28 */
elessair 0:7e2bd16f80af 29 off_t n;
elessair 0:7e2bd16f80af 30 struct dirent cur_entry;
elessair 0:7e2bd16f80af 31
elessair 0:7e2bd16f80af 32 BaseDirHandle() : n(0), cur_entry() {
elessair 0:7e2bd16f80af 33 }
elessair 0:7e2bd16f80af 34
elessair 0:7e2bd16f80af 35 virtual int closedir() {
elessair 0:7e2bd16f80af 36 delete this;
elessair 0:7e2bd16f80af 37 return 0;
elessair 0:7e2bd16f80af 38 }
elessair 0:7e2bd16f80af 39
elessair 0:7e2bd16f80af 40 virtual struct dirent *readdir() {
elessair 0:7e2bd16f80af 41 FileBase *ptr = FileBase::get(n);
elessair 0:7e2bd16f80af 42 if (ptr == NULL) return NULL;
elessair 0:7e2bd16f80af 43
elessair 0:7e2bd16f80af 44 /* Increment n, so next readdir gets the next item */
elessair 0:7e2bd16f80af 45 n++;
elessair 0:7e2bd16f80af 46
elessair 0:7e2bd16f80af 47 /* Setup cur entry and return a pointer to it */
elessair 0:7e2bd16f80af 48 std::strncpy(cur_entry.d_name, ptr->getName(), NAME_MAX);
elessair 0:7e2bd16f80af 49 return &cur_entry;
elessair 0:7e2bd16f80af 50 }
elessair 0:7e2bd16f80af 51
elessair 0:7e2bd16f80af 52 virtual off_t telldir() {
elessair 0:7e2bd16f80af 53 return n;
elessair 0:7e2bd16f80af 54 }
elessair 0:7e2bd16f80af 55
elessair 0:7e2bd16f80af 56 virtual void seekdir(off_t offset) {
elessair 0:7e2bd16f80af 57 n = offset;
elessair 0:7e2bd16f80af 58 }
elessair 0:7e2bd16f80af 59
elessair 0:7e2bd16f80af 60 virtual void rewinddir() {
elessair 0:7e2bd16f80af 61 n = 0;
elessair 0:7e2bd16f80af 62 }
elessair 0:7e2bd16f80af 63 };
elessair 0:7e2bd16f80af 64
elessair 0:7e2bd16f80af 65 FileSystemLike::FileSystemLike(const char *name) : FileBase(name, FileSystemPathType) {
elessair 0:7e2bd16f80af 66
elessair 0:7e2bd16f80af 67 }
elessair 0:7e2bd16f80af 68
elessair 0:7e2bd16f80af 69 FileSystemLike::~FileSystemLike() {
elessair 0:7e2bd16f80af 70
elessair 0:7e2bd16f80af 71 }
elessair 0:7e2bd16f80af 72
elessair 0:7e2bd16f80af 73 DirHandle *FileSystemLike::opendir() {
elessair 0:7e2bd16f80af 74 return new BaseDirHandle();
elessair 0:7e2bd16f80af 75 }
elessair 0:7e2bd16f80af 76
elessair 0:7e2bd16f80af 77 } // namespace mbed