PIR grove sensor that sends the sensed data to Thingspeak.com through the wifi module ESP 8266
LocalFileSystem Class Reference
[Drivers]
A filesystem for accessing the local mbed Microcontroller USB disk drive. More...
#include <LocalFileSystem.h>
Inherits mbed::FileSystemLike.
Public Member Functions | |
virtual FileHandle * | open (const char *name, int flags) |
Opens a file from the filesystem. | |
virtual int | remove (const char *filename) |
Remove a file from the filesystem. | |
virtual DirHandle * | opendir (const char *name) |
Opens a directory in the filesystem and returns a DirHandle representing the directory stream. | |
virtual int | rename (const char *oldname, const char *newname) |
Rename a file in the filesystem. | |
virtual int | mkdir (const char *name, mode_t mode) |
Creates a directory in the filesystem. |
Detailed Description
A filesystem for accessing the local mbed Microcontroller USB disk drive.
This allows programs to read and write files on the same disk drive that is used to program the mbed Microcontroller. Once created, the standard C file access functions are used to open, read and write files.
Synchronization level: Thread safe
Example:
#include "mbed.h" LocalFileSystem local("local"); // Create the local filesystem under the name "local" int main() { FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing fprintf(fp, "Hello World!"); fclose(fp); remove("/local/out.txt"); // Removes the file "out.txt" from the local file system DIR *d = opendir("/local"); // Opens the root directory of the local file system struct dirent *p; while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system printf("%s\n", p->d_name); // to stdout. } closedir(d); }
- Note:
- If the microcontroller program makes an access to the local drive, it will be marked as "removed" on the Host computer. This means it is no longer accessible from the Host Computer.
The drive will only re-appear when the microcontroller program exists. Note that if the program does not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
Definition at line 95 of file LocalFileSystem.h.
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