Matthew Sims / mbed

Lab 1 Program C

Dependents:   Lab1C

Fork of mbed by -deleted-

FunctionPointer.h@3:aefd12a1f1c5, 2008-11-14 (annotated)

Committer:
simon.ford@mbed.co.uk
Date:
Fri Nov 14 15:25:20 2008 +0000
Revision:
3:aefd12a1f1c5
Child:
4:5d1359a283bc
Added Ticker and Timeout abstractions

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon.ford@mbed.co.uk 3:aefd12a1f1c5 1 /* mbed Microcontroller Library - FunctionPointer
simon.ford@mbed.co.uk 3:aefd12a1f1c5 2 * Copyright (c) 2007-2008, sford
simon.ford@mbed.co.uk 3:aefd12a1f1c5 3 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 4
simon.ford@mbed.co.uk 3:aefd12a1f1c5 5 #ifndef MBED_FUNCTIONPOINTER_H
simon.ford@mbed.co.uk 3:aefd12a1f1c5 6 #define MBED_FUNCTIONPOINTER_H
simon.ford@mbed.co.uk 3:aefd12a1f1c5 7
simon.ford@mbed.co.uk 3:aefd12a1f1c5 8 #include "string.h"
simon.ford@mbed.co.uk 3:aefd12a1f1c5 9
simon.ford@mbed.co.uk 3:aefd12a1f1c5 10 namespace mbed {
simon.ford@mbed.co.uk 3:aefd12a1f1c5 11
simon.ford@mbed.co.uk 3:aefd12a1f1c5 12 /* Class FunctionPointer
simon.ford@mbed.co.uk 3:aefd12a1f1c5 13 * A class for storing and calling a pointer to a static or member void function
simon.ford@mbed.co.uk 3:aefd12a1f1c5 14 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 15 class FunctionPointer {
simon.ford@mbed.co.uk 3:aefd12a1f1c5 16
simon.ford@mbed.co.uk 3:aefd12a1f1c5 17 public:
simon.ford@mbed.co.uk 3:aefd12a1f1c5 18
simon.ford@mbed.co.uk 3:aefd12a1f1c5 19 /* Constructor FunctionPointer
simon.ford@mbed.co.uk 3:aefd12a1f1c5 20 * Create a FunctionPointer, attaching a static function
simon.ford@mbed.co.uk 3:aefd12a1f1c5 21 *
simon.ford@mbed.co.uk 3:aefd12a1f1c5 22 * Variables
simon.ford@mbed.co.uk 3:aefd12a1f1c5 23 * function - The void static function to attach (default is none)
simon.ford@mbed.co.uk 3:aefd12a1f1c5 24 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 25 FunctionPointer(void (*function)(void) = 0);
simon.ford@mbed.co.uk 3:aefd12a1f1c5 26
simon.ford@mbed.co.uk 3:aefd12a1f1c5 27 /* Constructor FunctionPointer
simon.ford@mbed.co.uk 3:aefd12a1f1c5 28 * Create a FunctionPointer, attaching a member function
simon.ford@mbed.co.uk 3:aefd12a1f1c5 29 *
simon.ford@mbed.co.uk 3:aefd12a1f1c5 30 * Variables
simon.ford@mbed.co.uk 3:aefd12a1f1c5 31 * object - The object pointer to invoke the member function on (i.e. the this pointer)
simon.ford@mbed.co.uk 3:aefd12a1f1c5 32 * function - The address of the void member function to attach
simon.ford@mbed.co.uk 3:aefd12a1f1c5 33 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 34 template<typename T>
simon.ford@mbed.co.uk 3:aefd12a1f1c5 35 FunctionPointer(T *object, void (T::*member)(void)) {
simon.ford@mbed.co.uk 3:aefd12a1f1c5 36 attach(object, member);
simon.ford@mbed.co.uk 3:aefd12a1f1c5 37 }
simon.ford@mbed.co.uk 3:aefd12a1f1c5 38
simon.ford@mbed.co.uk 3:aefd12a1f1c5 39 /* Function attach
simon.ford@mbed.co.uk 3:aefd12a1f1c5 40 * Attach a static function
simon.ford@mbed.co.uk 3:aefd12a1f1c5 41 *
simon.ford@mbed.co.uk 3:aefd12a1f1c5 42 * Variables
simon.ford@mbed.co.uk 3:aefd12a1f1c5 43 * function - The void static function to attach (default is none)
simon.ford@mbed.co.uk 3:aefd12a1f1c5 44 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 45 void attach(void (*function)(void) = 0);
simon.ford@mbed.co.uk 3:aefd12a1f1c5 46
simon.ford@mbed.co.uk 3:aefd12a1f1c5 47 /* Function attach
simon.ford@mbed.co.uk 3:aefd12a1f1c5 48 * Attach a member function
simon.ford@mbed.co.uk 3:aefd12a1f1c5 49 *
simon.ford@mbed.co.uk 3:aefd12a1f1c5 50 * Variables
simon.ford@mbed.co.uk 3:aefd12a1f1c5 51 * object - The object pointer to invoke the member function on (i.e. the this pointer)
simon.ford@mbed.co.uk 3:aefd12a1f1c5 52 * function - The address of the void member function to attach
simon.ford@mbed.co.uk 3:aefd12a1f1c5 53 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 54 template<typename T>
simon.ford@mbed.co.uk 3:aefd12a1f1c5 55 void attach(T *object, void (T::*member)(void)) {
simon.ford@mbed.co.uk 3:aefd12a1f1c5 56 _object = static_cast<void*>(object);
simon.ford@mbed.co.uk 3:aefd12a1f1c5 57 memcpy(_member, (char*)&member, sizeof(member));
simon.ford@mbed.co.uk 3:aefd12a1f1c5 58 _membercaller = &FunctionPointer::membercaller<T>;
simon.ford@mbed.co.uk 3:aefd12a1f1c5 59 _function = 0;
simon.ford@mbed.co.uk 3:aefd12a1f1c5 60 }
simon.ford@mbed.co.uk 3:aefd12a1f1c5 61
simon.ford@mbed.co.uk 3:aefd12a1f1c5 62 /* Function call
simon.ford@mbed.co.uk 3:aefd12a1f1c5 63 * Call the attached static or member function
simon.ford@mbed.co.uk 3:aefd12a1f1c5 64 */
simon.ford@mbed.co.uk 3:aefd12a1f1c5 65 void call();
simon.ford@mbed.co.uk 3:aefd12a1f1c5 66
simon.ford@mbed.co.uk 3:aefd12a1f1c5 67 private:
simon.ford@mbed.co.uk 3:aefd12a1f1c5 68
simon.ford@mbed.co.uk 3:aefd12a1f1c5 69 template<typename T>
simon.ford@mbed.co.uk 3:aefd12a1f1c5 70 static void membercaller(void *object, char *member) {
simon.ford@mbed.co.uk 3:aefd12a1f1c5 71 T* o = static_cast<T*>(object);
simon.ford@mbed.co.uk 3:aefd12a1f1c5 72 void (T::*m)(void);
simon.ford@mbed.co.uk 3:aefd12a1f1c5 73 memcpy((char*)&m, member, sizeof(m));
simon.ford@mbed.co.uk 3:aefd12a1f1c5 74 (o->*m)();
simon.ford@mbed.co.uk 3:aefd12a1f1c5 75 }
simon.ford@mbed.co.uk 3:aefd12a1f1c5 76
simon.ford@mbed.co.uk 3:aefd12a1f1c5 77 void (*_function)(void); // static function pointer - 0 if none attached
simon.ford@mbed.co.uk 3:aefd12a1f1c5 78 void *_object; // object this pointer - 0 if none attached
simon.ford@mbed.co.uk 3:aefd12a1f1c5 79 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
simon.ford@mbed.co.uk 3:aefd12a1f1c5 80 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
simon.ford@mbed.co.uk 3:aefd12a1f1c5 81
simon.ford@mbed.co.uk 3:aefd12a1f1c5 82 };
simon.ford@mbed.co.uk 3:aefd12a1f1c5 83
simon.ford@mbed.co.uk 3:aefd12a1f1c5 84 }
simon.ford@mbed.co.uk 3:aefd12a1f1c5 85
simon.ford@mbed.co.uk 3:aefd12a1f1c5 86 #endif