Aravind Vadali / mbed-src-AV

mbed.h library with any bug fixes AV finds.

Dependents:   micromouse4_encoder_testing PID_Test Lab1_Test WorkingPID ... more

api/LocalFileSystem.h@1:ebce2ad32f95, 2015-11-02 (annotated)

Committer:
aravindsv
Date:
Mon Nov 02 03:07:12 2015 +0000
Revision:
1:ebce2ad32f95
Parent:
0:ba7650f404af 
Changed the RCC timeout value to 500 ms, so total code startup time before program starts running is ~1s. Hopefully no side-effects from lower startup timeouts

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aravindsv 0:ba7650f404af 1 /* mbed Microcontroller Library
aravindsv 0:ba7650f404af 2 * Copyright (c) 2006-2013 ARM Limited
aravindsv 0:ba7650f404af 3 *
aravindsv 0:ba7650f404af 4 * Licensed under the Apache License, Version 2.0 (the "License");
aravindsv 0:ba7650f404af 5 * you may not use this file except in compliance with the License.
aravindsv 0:ba7650f404af 6 * You may obtain a copy of the License at
aravindsv 0:ba7650f404af 7 *
aravindsv 0:ba7650f404af 8 * http://www.apache.org/licenses/LICENSE-2.0
aravindsv 0:ba7650f404af 9 *
aravindsv 0:ba7650f404af 10 * Unless required by applicable law or agreed to in writing, software
aravindsv 0:ba7650f404af 11 * distributed under the License is distributed on an "AS IS" BASIS,
aravindsv 0:ba7650f404af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
aravindsv 0:ba7650f404af 13 * See the License for the specific language governing permissions and
aravindsv 0:ba7650f404af 14 * limitations under the License.
aravindsv 0:ba7650f404af 15 */
aravindsv 0:ba7650f404af 16 #ifndef MBED_LOCALFILESYSTEM_H
aravindsv 0:ba7650f404af 17 #define MBED_LOCALFILESYSTEM_H
aravindsv 0:ba7650f404af 18
aravindsv 0:ba7650f404af 19 #include "platform.h"
aravindsv 0:ba7650f404af 20
aravindsv 0:ba7650f404af 21 #if DEVICE_LOCALFILESYSTEM
aravindsv 0:ba7650f404af 22
aravindsv 0:ba7650f404af 23 #include "FileSystemLike.h"
aravindsv 0:ba7650f404af 24
aravindsv 0:ba7650f404af 25 namespace mbed {
aravindsv 0:ba7650f404af 26
aravindsv 0:ba7650f404af 27 FILEHANDLE local_file_open(const char* name, int flags);
aravindsv 0:ba7650f404af 28
aravindsv 0:ba7650f404af 29 class LocalFileHandle : public FileHandle {
aravindsv 0:ba7650f404af 30
aravindsv 0:ba7650f404af 31 public:
aravindsv 0:ba7650f404af 32 LocalFileHandle(FILEHANDLE fh);
aravindsv 0:ba7650f404af 33
aravindsv 0:ba7650f404af 34 virtual int close();
aravindsv 0:ba7650f404af 35
aravindsv 0:ba7650f404af 36 virtual ssize_t write(const void *buffer, size_t length);
aravindsv 0:ba7650f404af 37
aravindsv 0:ba7650f404af 38 virtual ssize_t read(void *buffer, size_t length);
aravindsv 0:ba7650f404af 39
aravindsv 0:ba7650f404af 40 virtual int isatty();
aravindsv 0:ba7650f404af 41
aravindsv 0:ba7650f404af 42 virtual off_t lseek(off_t position, int whence);
aravindsv 0:ba7650f404af 43
aravindsv 0:ba7650f404af 44 virtual int fsync();
aravindsv 0:ba7650f404af 45
aravindsv 0:ba7650f404af 46 virtual off_t flen();
aravindsv 0:ba7650f404af 47
aravindsv 0:ba7650f404af 48 protected:
aravindsv 0:ba7650f404af 49 FILEHANDLE _fh;
aravindsv 0:ba7650f404af 50 int pos;
aravindsv 0:ba7650f404af 51 };
aravindsv 0:ba7650f404af 52
aravindsv 0:ba7650f404af 53 /** A filesystem for accessing the local mbed Microcontroller USB disk drive
aravindsv 0:ba7650f404af 54 *
aravindsv 0:ba7650f404af 55 * This allows programs to read and write files on the same disk drive that is used to program the
aravindsv 0:ba7650f404af 56 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
aravindsv 0:ba7650f404af 57 * read and write files.
aravindsv 0:ba7650f404af 58 *
aravindsv 0:ba7650f404af 59 * Example:
aravindsv 0:ba7650f404af 60 * @code
aravindsv 0:ba7650f404af 61 * #include "mbed.h"
aravindsv 0:ba7650f404af 62 *
aravindsv 0:ba7650f404af 63 * LocalFileSystem local("local"); // Create the local filesystem under the name "local"
aravindsv 0:ba7650f404af 64 *
aravindsv 0:ba7650f404af 65 * int main() {
aravindsv 0:ba7650f404af 66 * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
aravindsv 0:ba7650f404af 67 * fprintf(fp, "Hello World!");
aravindsv 0:ba7650f404af 68 * fclose(fp);
aravindsv 0:ba7650f404af 69 * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
aravindsv 0:ba7650f404af 70 *
aravindsv 0:ba7650f404af 71 * DIR *d = opendir("/local"); // Opens the root directory of the local file system
aravindsv 0:ba7650f404af 72 * struct dirent *p;
aravindsv 0:ba7650f404af 73 * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
aravindsv 0:ba7650f404af 74 * printf("%s\n", p->d_name); // to stdout.
aravindsv 0:ba7650f404af 75 * }
aravindsv 0:ba7650f404af 76 * closedir(d);
aravindsv 0:ba7650f404af 77 * }
aravindsv 0:ba7650f404af 78 * @endcode
aravindsv 0:ba7650f404af 79 *
aravindsv 0:ba7650f404af 80 * @note
aravindsv 0:ba7650f404af 81 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
aravindsv 0:ba7650f404af 82 * on the Host computer. This means it is no longer accessible from the Host Computer.
aravindsv 0:ba7650f404af 83 *
aravindsv 0:ba7650f404af 84 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
aravindsv 0:ba7650f404af 85 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
aravindsv 0:ba7650f404af 86 */
aravindsv 0:ba7650f404af 87 class LocalFileSystem : public FileSystemLike {
aravindsv 0:ba7650f404af 88
aravindsv 0:ba7650f404af 89 public:
aravindsv 0:ba7650f404af 90 LocalFileSystem(const char* n) : FileSystemLike(n) {
aravindsv 0:ba7650f404af 91
aravindsv 0:ba7650f404af 92 }
aravindsv 0:ba7650f404af 93
aravindsv 0:ba7650f404af 94 virtual FileHandle *open(const char* name, int flags);
aravindsv 0:ba7650f404af 95 virtual int remove(const char *filename);
aravindsv 0:ba7650f404af 96 virtual DirHandle *opendir(const char *name);
aravindsv 0:ba7650f404af 97 };
aravindsv 0:ba7650f404af 98
aravindsv 0:ba7650f404af 99 } // namespace mbed
aravindsv 0:ba7650f404af 100
aravindsv 0:ba7650f404af 101 #endif
aravindsv 0:ba7650f404af 102
aravindsv 0:ba7650f404af 103 #endif