Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

api/DirHandle.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_DIRHANDLE_H
<> 144:ef7eb2e8f9f7 17 #define MBED_DIRHANDLE_H
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #if defined(__ARMCC_VERSION) || defined(__ICCARM__)
<> 144:ef7eb2e8f9f7 20 # define NAME_MAX 255
<> 144:ef7eb2e8f9f7 21 typedef int mode_t;
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 #else
<> 144:ef7eb2e8f9f7 24 # include <sys/syslimits.h>
<> 144:ef7eb2e8f9f7 25 #endif
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 #include "FileHandle.h"
<> 144:ef7eb2e8f9f7 28
<> 144:ef7eb2e8f9f7 29 struct dirent {
<> 144:ef7eb2e8f9f7 30 char d_name[NAME_MAX+1];
<> 144:ef7eb2e8f9f7 31 };
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 namespace mbed {
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 /** Represents a directory stream. Objects of this type are returned
<> 144:ef7eb2e8f9f7 36 * by a FileSystemLike's opendir method. Implementations must define
<> 144:ef7eb2e8f9f7 37 * at least closedir, readdir and rewinddir.
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 * If a FileSystemLike class defines the opendir method, then the
<> 144:ef7eb2e8f9f7 40 * directories of an object of that type can be accessed by
<> 144:ef7eb2e8f9f7 41 * DIR *d = opendir("/example/directory") (or opendir("/example")
<> 144:ef7eb2e8f9f7 42 * to open the root of the filesystem), and then using readdir(d) etc.
<> 144:ef7eb2e8f9f7 43 *
<> 144:ef7eb2e8f9f7 44 * The root directory is considered to contain all FileLike and
<> 144:ef7eb2e8f9f7 45 * FileSystemLike objects, so the DIR* returned by opendir("/") will
<> 144:ef7eb2e8f9f7 46 * reflect this.
<> 144:ef7eb2e8f9f7 47 *
<> 144:ef7eb2e8f9f7 48 * @Note Synchronization level: Set by subclass
<> 144:ef7eb2e8f9f7 49 */
<> 144:ef7eb2e8f9f7 50 class DirHandle {
<> 144:ef7eb2e8f9f7 51
<> 144:ef7eb2e8f9f7 52 public:
<> 144:ef7eb2e8f9f7 53 /** Closes the directory.
<> 144:ef7eb2e8f9f7 54 *
<> 144:ef7eb2e8f9f7 55 * @returns
<> 144:ef7eb2e8f9f7 56 * 0 on success,
<> 144:ef7eb2e8f9f7 57 * -1 on error.
<> 144:ef7eb2e8f9f7 58 */
<> 144:ef7eb2e8f9f7 59 virtual int closedir()=0;
<> 144:ef7eb2e8f9f7 60
<> 144:ef7eb2e8f9f7 61 /** Return the directory entry at the current position, and
<> 144:ef7eb2e8f9f7 62 * advances the position to the next entry.
<> 144:ef7eb2e8f9f7 63 *
<> 144:ef7eb2e8f9f7 64 * @returns
<> 144:ef7eb2e8f9f7 65 * A pointer to a dirent structure representing the
<> 144:ef7eb2e8f9f7 66 * directory entry at the current position, or NULL on reaching
<> 144:ef7eb2e8f9f7 67 * end of directory or error.
<> 144:ef7eb2e8f9f7 68 */
<> 144:ef7eb2e8f9f7 69 virtual struct dirent *readdir()=0;
<> 144:ef7eb2e8f9f7 70
<> 144:ef7eb2e8f9f7 71 /** Resets the position to the beginning of the directory.
<> 144:ef7eb2e8f9f7 72 */
<> 144:ef7eb2e8f9f7 73 virtual void rewinddir()=0;
<> 144:ef7eb2e8f9f7 74
<> 144:ef7eb2e8f9f7 75 /** Returns the current position of the DirHandle.
<> 144:ef7eb2e8f9f7 76 *
<> 144:ef7eb2e8f9f7 77 * @returns
<> 144:ef7eb2e8f9f7 78 * the current position,
<> 144:ef7eb2e8f9f7 79 * -1 on error.
<> 144:ef7eb2e8f9f7 80 */
<> 144:ef7eb2e8f9f7 81 virtual off_t telldir() { return -1; }
<> 144:ef7eb2e8f9f7 82
<> 144:ef7eb2e8f9f7 83 /** Sets the position of the DirHandle.
<> 144:ef7eb2e8f9f7 84 *
<> 144:ef7eb2e8f9f7 85 * @param location The location to seek to. Must be a value returned by telldir.
<> 144:ef7eb2e8f9f7 86 */
<> 144:ef7eb2e8f9f7 87 virtual void seekdir(off_t location) { (void)location;}
<> 144:ef7eb2e8f9f7 88
<> 144:ef7eb2e8f9f7 89 virtual ~DirHandle() {}
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 protected:
<> 144:ef7eb2e8f9f7 92
<> 144:ef7eb2e8f9f7 93 /** Acquire exclusive access to this object.
<> 144:ef7eb2e8f9f7 94 */
<> 144:ef7eb2e8f9f7 95 virtual void lock() {
<> 144:ef7eb2e8f9f7 96 // Stub
<> 144:ef7eb2e8f9f7 97 }
<> 144:ef7eb2e8f9f7 98
<> 144:ef7eb2e8f9f7 99 /** Release exclusive access to this object.
<> 144:ef7eb2e8f9f7 100 */
<> 144:ef7eb2e8f9f7 101 virtual void unlock() {
<> 144:ef7eb2e8f9f7 102 // Stub
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104 };
<> 144:ef7eb2e8f9f7 105
<> 144:ef7eb2e8f9f7 106 } // namespace mbed
<> 144:ef7eb2e8f9f7 107
<> 144:ef7eb2e8f9f7 108 typedef mbed::DirHandle DIR;
<> 144:ef7eb2e8f9f7 109
<> 144:ef7eb2e8f9f7 110 extern "C" {
<> 144:ef7eb2e8f9f7 111 DIR *opendir(const char*);
<> 144:ef7eb2e8f9f7 112 struct dirent *readdir(DIR *);
<> 144:ef7eb2e8f9f7 113 int closedir(DIR*);
<> 144:ef7eb2e8f9f7 114 void rewinddir(DIR*);
<> 144:ef7eb2e8f9f7 115 long telldir(DIR*);
<> 144:ef7eb2e8f9f7 116 void seekdir(DIR*, long);
<> 144:ef7eb2e8f9f7 117 int mkdir(const char *name, mode_t n);
<> 144:ef7eb2e8f9f7 118 };
<> 144:ef7eb2e8f9f7 119
<> 144:ef7eb2e8f9f7 120 #endif /* MBED_DIRHANDLE_H */