Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

api/LocalFileSystem.h@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #ifndef MBED_LOCALFILESYSTEM_H
<> 144:ef7eb2e8f9f7 17 #define MBED_LOCALFILESYSTEM_H
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #include "platform.h"
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 #if DEVICE_LOCALFILESYSTEM
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 #include "FileSystemLike.h"
<> 144:ef7eb2e8f9f7 24 #include "PlatformMutex.h"
<> 144:ef7eb2e8f9f7 25
<> 144:ef7eb2e8f9f7 26 namespace mbed {
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 FILEHANDLE local_file_open(const char* name, int flags);
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 class LocalFileHandle : public FileHandle {
<> 144:ef7eb2e8f9f7 31
<> 144:ef7eb2e8f9f7 32 public:
<> 144:ef7eb2e8f9f7 33 LocalFileHandle(FILEHANDLE fh);
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 virtual int close();
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 virtual ssize_t write(const void *buffer, size_t length);
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 virtual ssize_t read(void *buffer, size_t length);
<> 144:ef7eb2e8f9f7 40
<> 144:ef7eb2e8f9f7 41 virtual int isatty();
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 virtual off_t lseek(off_t position, int whence);
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 virtual int fsync();
<> 144:ef7eb2e8f9f7 46
<> 144:ef7eb2e8f9f7 47 virtual off_t flen();
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 protected:
<> 144:ef7eb2e8f9f7 50 virtual void lock();
<> 144:ef7eb2e8f9f7 51 virtual void unlock();
<> 144:ef7eb2e8f9f7 52 FILEHANDLE _fh;
<> 144:ef7eb2e8f9f7 53 int pos;
<> 144:ef7eb2e8f9f7 54 PlatformMutex _mutex;
<> 144:ef7eb2e8f9f7 55 };
<> 144:ef7eb2e8f9f7 56
<> 144:ef7eb2e8f9f7 57 /** A filesystem for accessing the local mbed Microcontroller USB disk drive
<> 144:ef7eb2e8f9f7 58 *
<> 144:ef7eb2e8f9f7 59 * This allows programs to read and write files on the same disk drive that is used to program the
<> 144:ef7eb2e8f9f7 60 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
<> 144:ef7eb2e8f9f7 61 * read and write files.
<> 144:ef7eb2e8f9f7 62 *
<> 144:ef7eb2e8f9f7 63 * @Note Synchronization level: Thread safe
<> 144:ef7eb2e8f9f7 64 *
<> 144:ef7eb2e8f9f7 65 * Example:
<> 144:ef7eb2e8f9f7 66 * @code
<> 144:ef7eb2e8f9f7 67 * #include "mbed.h"
<> 144:ef7eb2e8f9f7 68 *
<> 144:ef7eb2e8f9f7 69 * LocalFileSystem local("local"); // Create the local filesystem under the name "local"
<> 144:ef7eb2e8f9f7 70 *
<> 144:ef7eb2e8f9f7 71 * int main() {
<> 144:ef7eb2e8f9f7 72 * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
<> 144:ef7eb2e8f9f7 73 * fprintf(fp, "Hello World!");
<> 144:ef7eb2e8f9f7 74 * fclose(fp);
<> 144:ef7eb2e8f9f7 75 * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
<> 144:ef7eb2e8f9f7 76 *
<> 144:ef7eb2e8f9f7 77 * DIR *d = opendir("/local"); // Opens the root directory of the local file system
<> 144:ef7eb2e8f9f7 78 * struct dirent *p;
<> 144:ef7eb2e8f9f7 79 * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
<> 144:ef7eb2e8f9f7 80 * printf("%s\n", p->d_name); // to stdout.
<> 144:ef7eb2e8f9f7 81 * }
<> 144:ef7eb2e8f9f7 82 * closedir(d);
<> 144:ef7eb2e8f9f7 83 * }
<> 144:ef7eb2e8f9f7 84 * @endcode
<> 144:ef7eb2e8f9f7 85 *
<> 144:ef7eb2e8f9f7 86 * @note
<> 144:ef7eb2e8f9f7 87 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
<> 144:ef7eb2e8f9f7 88 * on the Host computer. This means it is no longer accessible from the Host Computer.
<> 144:ef7eb2e8f9f7 89 *
<> 144:ef7eb2e8f9f7 90 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
<> 144:ef7eb2e8f9f7 91 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
<> 144:ef7eb2e8f9f7 92 */
<> 144:ef7eb2e8f9f7 93 class LocalFileSystem : public FileSystemLike {
<> 144:ef7eb2e8f9f7 94 // No modifiable state
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 public:
<> 144:ef7eb2e8f9f7 97 LocalFileSystem(const char* n) : FileSystemLike(n) {
<> 144:ef7eb2e8f9f7 98
<> 144:ef7eb2e8f9f7 99 }
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 virtual FileHandle *open(const char* name, int flags);
<> 144:ef7eb2e8f9f7 102 virtual int remove(const char *filename);
<> 144:ef7eb2e8f9f7 103 virtual DirHandle *opendir(const char *name);
<> 144:ef7eb2e8f9f7 104 };
<> 144:ef7eb2e8f9f7 105
<> 144:ef7eb2e8f9f7 106 } // namespace mbed
<> 144:ef7eb2e8f9f7 107
<> 144:ef7eb2e8f9f7 108 #endif
<> 144:ef7eb2e8f9f7 109
<> 144:ef7eb2e8f9f7 110 #endif