CRAC Team / command_AX12_petit_robot_V4tempo

code ax12 petit robot 12/05/2017

Fork of command_AX12_petit_robot_V3 by CRAC Team

mbed/LocalFileSystem.h@7:ad4a19e26b84, 2017-05-12 (annotated)

Committer:
ClementBreteau
Date:
Fri May 12 14:35:09 2017 +0000
Revision:
7:ad4a19e26b84
Parent:
2:99b1cb0d9f5e 
position ax12

Who changed what in which revision?

UserRevisionLine numberNew contents of line
SquirrelGod 2:99b1cb0d9f5e 1 /* mbed Microcontroller Library - LocalFileSystem
SquirrelGod 2:99b1cb0d9f5e 2 * Copyright (c) 2008-2009 ARM Limited. All rights reserved.
SquirrelGod 2:99b1cb0d9f5e 3 */
SquirrelGod 2:99b1cb0d9f5e 4
SquirrelGod 2:99b1cb0d9f5e 5 #ifndef MBED_LOCALFILESYSTEM_H
SquirrelGod 2:99b1cb0d9f5e 6 #define MBED_LOCALFILESYSTEM_H
SquirrelGod 2:99b1cb0d9f5e 7
SquirrelGod 2:99b1cb0d9f5e 8 #include "FileSystemLike.h"
SquirrelGod 2:99b1cb0d9f5e 9
SquirrelGod 2:99b1cb0d9f5e 10 namespace mbed {
SquirrelGod 2:99b1cb0d9f5e 11
SquirrelGod 2:99b1cb0d9f5e 12 FILEHANDLE local_file_open(const char* name, int flags);
SquirrelGod 2:99b1cb0d9f5e 13
SquirrelGod 2:99b1cb0d9f5e 14 class LocalFileHandle : public FileHandle {
SquirrelGod 2:99b1cb0d9f5e 15
SquirrelGod 2:99b1cb0d9f5e 16 public:
SquirrelGod 2:99b1cb0d9f5e 17 LocalFileHandle(FILEHANDLE fh);
SquirrelGod 2:99b1cb0d9f5e 18
SquirrelGod 2:99b1cb0d9f5e 19 virtual int close();
SquirrelGod 2:99b1cb0d9f5e 20
SquirrelGod 2:99b1cb0d9f5e 21 virtual ssize_t write(const void *buffer, size_t length);
SquirrelGod 2:99b1cb0d9f5e 22
SquirrelGod 2:99b1cb0d9f5e 23 virtual ssize_t read(void *buffer, size_t length);
SquirrelGod 2:99b1cb0d9f5e 24
SquirrelGod 2:99b1cb0d9f5e 25 virtual int isatty();
SquirrelGod 2:99b1cb0d9f5e 26
SquirrelGod 2:99b1cb0d9f5e 27 virtual off_t lseek(off_t position, int whence);
SquirrelGod 2:99b1cb0d9f5e 28
SquirrelGod 2:99b1cb0d9f5e 29 virtual int fsync();
SquirrelGod 2:99b1cb0d9f5e 30
SquirrelGod 2:99b1cb0d9f5e 31 virtual off_t flen();
SquirrelGod 2:99b1cb0d9f5e 32
SquirrelGod 2:99b1cb0d9f5e 33 protected:
SquirrelGod 2:99b1cb0d9f5e 34 FILEHANDLE _fh;
SquirrelGod 2:99b1cb0d9f5e 35 int pos;
SquirrelGod 2:99b1cb0d9f5e 36 };
SquirrelGod 2:99b1cb0d9f5e 37
SquirrelGod 2:99b1cb0d9f5e 38 /* Class: LocalFileSystem
SquirrelGod 2:99b1cb0d9f5e 39 * A filesystem for accessing the local mbed Microcontroller USB disk drive
SquirrelGod 2:99b1cb0d9f5e 40 *
SquirrelGod 2:99b1cb0d9f5e 41 * This allows programs to read and write files on the same disk drive that is used to program the
SquirrelGod 2:99b1cb0d9f5e 42 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
SquirrelGod 2:99b1cb0d9f5e 43 * read and write files.
SquirrelGod 2:99b1cb0d9f5e 44 *
SquirrelGod 2:99b1cb0d9f5e 45 * Example:
SquirrelGod 2:99b1cb0d9f5e 46 * > #include "mbed.h"
SquirrelGod 2:99b1cb0d9f5e 47 * >
SquirrelGod 2:99b1cb0d9f5e 48 * > LocalFileSystem local("local"); // Create the local filesystem under the name "local"
SquirrelGod 2:99b1cb0d9f5e 49 * >
SquirrelGod 2:99b1cb0d9f5e 50 * > int main() {
SquirrelGod 2:99b1cb0d9f5e 51 * > FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
SquirrelGod 2:99b1cb0d9f5e 52 * > fprintf(fp, "Hello World!");
SquirrelGod 2:99b1cb0d9f5e 53 * > fclose(fp);
SquirrelGod 2:99b1cb0d9f5e 54 * > remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
SquirrelGod 2:99b1cb0d9f5e 55 * >
SquirrelGod 2:99b1cb0d9f5e 56 * > DIR *d = opendir("/local"); // Opens the root directory of the local file system
SquirrelGod 2:99b1cb0d9f5e 57 * > struct dirent *p;
SquirrelGod 2:99b1cb0d9f5e 58 * > while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
SquirrelGod 2:99b1cb0d9f5e 59 * > printf("%s\n", p->d_name); // to stdout.
SquirrelGod 2:99b1cb0d9f5e 60 * > }
SquirrelGod 2:99b1cb0d9f5e 61 * > closedir(d);
SquirrelGod 2:99b1cb0d9f5e 62 * > }
SquirrelGod 2:99b1cb0d9f5e 63 *
SquirrelGod 2:99b1cb0d9f5e 64 * Implementation Notes:
SquirrelGod 2:99b1cb0d9f5e 65 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
SquirrelGod 2:99b1cb0d9f5e 66 * on the Host computer. This means it is no longer accessible from the Host Computer.
SquirrelGod 2:99b1cb0d9f5e 67 *
SquirrelGod 2:99b1cb0d9f5e 68 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
SquirrelGod 2:99b1cb0d9f5e 69 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
SquirrelGod 2:99b1cb0d9f5e 70 */
SquirrelGod 2:99b1cb0d9f5e 71 class LocalFileSystem : public FileSystemLike {
SquirrelGod 2:99b1cb0d9f5e 72
SquirrelGod 2:99b1cb0d9f5e 73 public:
SquirrelGod 2:99b1cb0d9f5e 74
SquirrelGod 2:99b1cb0d9f5e 75 LocalFileSystem(const char* n) : FileSystemLike(n) {
SquirrelGod 2:99b1cb0d9f5e 76
SquirrelGod 2:99b1cb0d9f5e 77 }
SquirrelGod 2:99b1cb0d9f5e 78
SquirrelGod 2:99b1cb0d9f5e 79 virtual FileHandle *open(const char* name, int flags);
SquirrelGod 2:99b1cb0d9f5e 80 virtual int remove(const char *filename);
SquirrelGod 2:99b1cb0d9f5e 81 virtual DirHandle *opendir(const char *name);
SquirrelGod 2:99b1cb0d9f5e 82 };
SquirrelGod 2:99b1cb0d9f5e 83
SquirrelGod 2:99b1cb0d9f5e 84 } // namespace mbed
SquirrelGod 2:99b1cb0d9f5e 85
SquirrelGod 2:99b1cb0d9f5e 86 #endif