Tushar Sachdeva / FRDM_K64F_LCD

A simple 128x32 graphical LCD program to quickstart with LCD on ARM mbed IoT Starter Kit. This requires mbed Applciation Shield with FRDM-K64F platform.

Dependencies:   C12832

mbed/LocalFileSystem.h@1:eb68c94a8ee5, 2015-04-12 (annotated)

Committer:
tushki7
Date:
Sun Apr 12 15:45:52 2015 +0000
Revision:
1:eb68c94a8ee5
Parent:
0:60d829a0353a 
A simple 128x32 LCD program with ARM mbed IoT Starter Kit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tushki7 0:60d829a0353a 1 /* mbed Microcontroller Library
tushki7 0:60d829a0353a 2 * Copyright (c) 2006-2013 ARM Limited
tushki7 0:60d829a0353a 3 *
tushki7 0:60d829a0353a 4 * Licensed under the Apache License, Version 2.0 (the "License");
tushki7 0:60d829a0353a 5 * you may not use this file except in compliance with the License.
tushki7 0:60d829a0353a 6 * You may obtain a copy of the License at
tushki7 0:60d829a0353a 7 *
tushki7 0:60d829a0353a 8 * http://www.apache.org/licenses/LICENSE-2.0
tushki7 0:60d829a0353a 9 *
tushki7 0:60d829a0353a 10 * Unless required by applicable law or agreed to in writing, software
tushki7 0:60d829a0353a 11 * distributed under the License is distributed on an "AS IS" BASIS,
tushki7 0:60d829a0353a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
tushki7 0:60d829a0353a 13 * See the License for the specific language governing permissions and
tushki7 0:60d829a0353a 14 * limitations under the License.
tushki7 0:60d829a0353a 15 */
tushki7 0:60d829a0353a 16 #ifndef MBED_LOCALFILESYSTEM_H
tushki7 0:60d829a0353a 17 #define MBED_LOCALFILESYSTEM_H
tushki7 0:60d829a0353a 18
tushki7 0:60d829a0353a 19 #include "platform.h"
tushki7 0:60d829a0353a 20
tushki7 0:60d829a0353a 21 #if DEVICE_LOCALFILESYSTEM
tushki7 0:60d829a0353a 22
tushki7 0:60d829a0353a 23 #include "FileSystemLike.h"
tushki7 0:60d829a0353a 24
tushki7 0:60d829a0353a 25 namespace mbed {
tushki7 0:60d829a0353a 26
tushki7 0:60d829a0353a 27 FILEHANDLE local_file_open(const char* name, int flags);
tushki7 0:60d829a0353a 28
tushki7 0:60d829a0353a 29 class LocalFileHandle : public FileHandle {
tushki7 0:60d829a0353a 30
tushki7 0:60d829a0353a 31 public:
tushki7 0:60d829a0353a 32 LocalFileHandle(FILEHANDLE fh);
tushki7 0:60d829a0353a 33
tushki7 0:60d829a0353a 34 virtual int close();
tushki7 0:60d829a0353a 35
tushki7 0:60d829a0353a 36 virtual ssize_t write(const void *buffer, size_t length);
tushki7 0:60d829a0353a 37
tushki7 0:60d829a0353a 38 virtual ssize_t read(void *buffer, size_t length);
tushki7 0:60d829a0353a 39
tushki7 0:60d829a0353a 40 virtual int isatty();
tushki7 0:60d829a0353a 41
tushki7 0:60d829a0353a 42 virtual off_t lseek(off_t position, int whence);
tushki7 0:60d829a0353a 43
tushki7 0:60d829a0353a 44 virtual int fsync();
tushki7 0:60d829a0353a 45
tushki7 0:60d829a0353a 46 virtual off_t flen();
tushki7 0:60d829a0353a 47
tushki7 0:60d829a0353a 48 protected:
tushki7 0:60d829a0353a 49 FILEHANDLE _fh;
tushki7 0:60d829a0353a 50 int pos;
tushki7 0:60d829a0353a 51 };
tushki7 0:60d829a0353a 52
tushki7 0:60d829a0353a 53 /** A filesystem for accessing the local mbed Microcontroller USB disk drive
tushki7 0:60d829a0353a 54 *
tushki7 0:60d829a0353a 55 * This allows programs to read and write files on the same disk drive that is used to program the
tushki7 0:60d829a0353a 56 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
tushki7 0:60d829a0353a 57 * read and write files.
tushki7 0:60d829a0353a 58 *
tushki7 0:60d829a0353a 59 * Example:
tushki7 0:60d829a0353a 60 * @code
tushki7 0:60d829a0353a 61 * #include "mbed.h"
tushki7 0:60d829a0353a 62 *
tushki7 0:60d829a0353a 63 * LocalFileSystem local("local"); // Create the local filesystem under the name "local"
tushki7 0:60d829a0353a 64 *
tushki7 0:60d829a0353a 65 * int main() {
tushki7 0:60d829a0353a 66 * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
tushki7 0:60d829a0353a 67 * fprintf(fp, "Hello World!");
tushki7 0:60d829a0353a 68 * fclose(fp);
tushki7 0:60d829a0353a 69 * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
tushki7 0:60d829a0353a 70 *
tushki7 0:60d829a0353a 71 * DIR *d = opendir("/local"); // Opens the root directory of the local file system
tushki7 0:60d829a0353a 72 * struct dirent *p;
tushki7 0:60d829a0353a 73 * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
tushki7 0:60d829a0353a 74 * printf("%s\n", p->d_name); // to stdout.
tushki7 0:60d829a0353a 75 * }
tushki7 0:60d829a0353a 76 * closedir(d);
tushki7 0:60d829a0353a 77 * }
tushki7 0:60d829a0353a 78 * @endcode
tushki7 0:60d829a0353a 79 *
tushki7 0:60d829a0353a 80 * @note
tushki7 0:60d829a0353a 81 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
tushki7 0:60d829a0353a 82 * on the Host computer. This means it is no longer accessible from the Host Computer.
tushki7 0:60d829a0353a 83 *
tushki7 0:60d829a0353a 84 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
tushki7 0:60d829a0353a 85 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
tushki7 0:60d829a0353a 86 */
tushki7 0:60d829a0353a 87 class LocalFileSystem : public FileSystemLike {
tushki7 0:60d829a0353a 88
tushki7 0:60d829a0353a 89 public:
tushki7 0:60d829a0353a 90 LocalFileSystem(const char* n) : FileSystemLike(n) {
tushki7 0:60d829a0353a 91
tushki7 0:60d829a0353a 92 }
tushki7 0:60d829a0353a 93
tushki7 0:60d829a0353a 94 virtual FileHandle *open(const char* name, int flags);
tushki7 0:60d829a0353a 95 virtual int remove(const char *filename);
tushki7 0:60d829a0353a 96 virtual DirHandle *opendir(const char *name);
tushki7 0:60d829a0353a 97 };
tushki7 0:60d829a0353a 98
tushki7 0:60d829a0353a 99 } // namespace mbed
tushki7 0:60d829a0353a 100
tushki7 0:60d829a0353a 101 #endif
tushki7 0:60d829a0353a 102
tushki7 0:60d829a0353a 103 #endif