Jonne Valola / PokittoLib Featured

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   YATTT sd_map_test cPong SnowDemo ... more

PokittoLib

Library for programming Pokitto hardware

How to Use

  1. Import this library to online compiler (see button "import" on the right hand side
  2. DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
  3. Change My_settings.h according to your project
  4. Start coding!

mbed-pokitto/api/FunctionPointer.h@28:958b71c4b92a, 2018-01-05 (annotated)

Committer:
Pokitto
Date:
Fri Jan 05 02:19:51 2018 +0000
Revision:
28:958b71c4b92a
Parent:
5:ea7377f3d1af 
Sound level stored in EEPROM, sound output improved

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 5:ea7377f3d1af 1 /* mbed Microcontroller Library
Pokitto 5:ea7377f3d1af 2 * Copyright (c) 2006-2015 ARM Limited
Pokitto 5:ea7377f3d1af 3 *
Pokitto 5:ea7377f3d1af 4 * Licensed under the Apache License, Version 2.0 (the "License");
Pokitto 5:ea7377f3d1af 5 * you may not use this file except in compliance with the License.
Pokitto 5:ea7377f3d1af 6 * You may obtain a copy of the License at
Pokitto 5:ea7377f3d1af 7 *
Pokitto 5:ea7377f3d1af 8 * http://www.apache.org/licenses/LICENSE-2.0
Pokitto 5:ea7377f3d1af 9 *
Pokitto 5:ea7377f3d1af 10 * Unless required by applicable law or agreed to in writing, software
Pokitto 5:ea7377f3d1af 11 * distributed under the License is distributed on an "AS IS" BASIS,
Pokitto 5:ea7377f3d1af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Pokitto 5:ea7377f3d1af 13 * See the License for the specific language governing permissions and
Pokitto 5:ea7377f3d1af 14 * limitations under the License.
Pokitto 5:ea7377f3d1af 15 */
Pokitto 5:ea7377f3d1af 16 #ifndef MBED_FUNCTIONPOINTER_H
Pokitto 5:ea7377f3d1af 17 #define MBED_FUNCTIONPOINTER_H
Pokitto 5:ea7377f3d1af 18
Pokitto 5:ea7377f3d1af 19 #include <string.h>
Pokitto 5:ea7377f3d1af 20 #include <stdint.h>
Pokitto 5:ea7377f3d1af 21
Pokitto 5:ea7377f3d1af 22 namespace mbed {
Pokitto 5:ea7377f3d1af 23
Pokitto 5:ea7377f3d1af 24 /* If we had variaditic templates, this wouldn't be a problem, but until C++11 is enabled, we are stuck with multiple classes... */
Pokitto 5:ea7377f3d1af 25
Pokitto 5:ea7377f3d1af 26 /** A class for storing and calling a pointer to a static or member function
Pokitto 5:ea7377f3d1af 27 */
Pokitto 5:ea7377f3d1af 28 template <typename R, typename A1>
Pokitto 5:ea7377f3d1af 29 class FunctionPointerArg1{
Pokitto 5:ea7377f3d1af 30 public:
Pokitto 5:ea7377f3d1af 31 /** Create a FunctionPointer, attaching a static function
Pokitto 5:ea7377f3d1af 32 *
Pokitto 5:ea7377f3d1af 33 * @param function The static function to attach (default is none)
Pokitto 5:ea7377f3d1af 34 */
Pokitto 5:ea7377f3d1af 35 FunctionPointerArg1(R (*function)(A1) = 0) {
Pokitto 5:ea7377f3d1af 36 attach(function);
Pokitto 5:ea7377f3d1af 37 }
Pokitto 5:ea7377f3d1af 38
Pokitto 5:ea7377f3d1af 39 /** Create a FunctionPointer, attaching a member function
Pokitto 5:ea7377f3d1af 40 *
Pokitto 5:ea7377f3d1af 41 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:ea7377f3d1af 42 * @param function The address of the member function to attach
Pokitto 5:ea7377f3d1af 43 */
Pokitto 5:ea7377f3d1af 44 template<typename T>
Pokitto 5:ea7377f3d1af 45 FunctionPointerArg1(T *object, R (T::*member)(A1)) {
Pokitto 5:ea7377f3d1af 46 attach(object, member);
Pokitto 5:ea7377f3d1af 47 }
Pokitto 5:ea7377f3d1af 48
Pokitto 5:ea7377f3d1af 49 /** Attach a static function
Pokitto 5:ea7377f3d1af 50 *
Pokitto 5:ea7377f3d1af 51 * @param function The static function to attach (default is none)
Pokitto 5:ea7377f3d1af 52 */
Pokitto 5:ea7377f3d1af 53 void attach(R (*function)(A1)) {
Pokitto 5:ea7377f3d1af 54 _p.function = function;
Pokitto 5:ea7377f3d1af 55 _membercaller = 0;
Pokitto 5:ea7377f3d1af 56 }
Pokitto 5:ea7377f3d1af 57
Pokitto 5:ea7377f3d1af 58 /** Attach a member function
Pokitto 5:ea7377f3d1af 59 *
Pokitto 5:ea7377f3d1af 60 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:ea7377f3d1af 61 * @param function The address of the member function to attach
Pokitto 5:ea7377f3d1af 62 */
Pokitto 5:ea7377f3d1af 63 template<typename T>
Pokitto 5:ea7377f3d1af 64 void attach(T *object, R (T::*member)(A1)) {
Pokitto 5:ea7377f3d1af 65 _p.object = static_cast<void*>(object);
Pokitto 5:ea7377f3d1af 66 *reinterpret_cast<R (T::**)(A1)>(_member) = member;
Pokitto 5:ea7377f3d1af 67 _membercaller = &FunctionPointerArg1::membercaller<T>;
Pokitto 5:ea7377f3d1af 68 }
Pokitto 5:ea7377f3d1af 69
Pokitto 5:ea7377f3d1af 70 /** Call the attached static or member function
Pokitto 5:ea7377f3d1af 71 */
Pokitto 5:ea7377f3d1af 72 R call(A1 a) {
Pokitto 5:ea7377f3d1af 73 if (_membercaller == 0 && _p.function) {
Pokitto 5:ea7377f3d1af 74 return _p.function(a);
Pokitto 5:ea7377f3d1af 75 } else if (_membercaller && _p.object) {
Pokitto 5:ea7377f3d1af 76 return _membercaller(_p.object, _member, a);
Pokitto 5:ea7377f3d1af 77 }
Pokitto 5:ea7377f3d1af 78 return (R)0;
Pokitto 5:ea7377f3d1af 79 }
Pokitto 5:ea7377f3d1af 80
Pokitto 5:ea7377f3d1af 81 /** Get registered static function
Pokitto 5:ea7377f3d1af 82 */
Pokitto 5:ea7377f3d1af 83 R(*get_function(A1))() {
Pokitto 5:ea7377f3d1af 84 return _membercaller ? (R(*)(A1))0 : (R(*)(A1))_p.function;
Pokitto 5:ea7377f3d1af 85 }
Pokitto 5:ea7377f3d1af 86
Pokitto 5:ea7377f3d1af 87 #ifdef MBED_OPERATORS
Pokitto 5:ea7377f3d1af 88 R operator ()(A1 a) {
Pokitto 5:ea7377f3d1af 89 return call(a);
Pokitto 5:ea7377f3d1af 90 }
Pokitto 5:ea7377f3d1af 91 operator bool(void) const {
Pokitto 5:ea7377f3d1af 92 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
Pokitto 5:ea7377f3d1af 93 }
Pokitto 5:ea7377f3d1af 94 #endif
Pokitto 5:ea7377f3d1af 95 private:
Pokitto 5:ea7377f3d1af 96 template<typename T>
Pokitto 5:ea7377f3d1af 97 static R membercaller(void *object, uintptr_t *member, A1 a) {
Pokitto 5:ea7377f3d1af 98 T* o = static_cast<T*>(object);
Pokitto 5:ea7377f3d1af 99 R (T::**m)(A1) = reinterpret_cast<R (T::**)(A1)>(member);
Pokitto 5:ea7377f3d1af 100 return (o->**m)(a);
Pokitto 5:ea7377f3d1af 101 }
Pokitto 5:ea7377f3d1af 102
Pokitto 5:ea7377f3d1af 103 union {
Pokitto 5:ea7377f3d1af 104 R (*function)(A1); // static function pointer
Pokitto 5:ea7377f3d1af 105 void *object; // object this pointer
Pokitto 5:ea7377f3d1af 106 } _p;
Pokitto 5:ea7377f3d1af 107 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
Pokitto 5:ea7377f3d1af 108 R (*_membercaller)(void*, uintptr_t*, A1); // registered membercaller function to convert back and call _m.member on _object
Pokitto 5:ea7377f3d1af 109 };
Pokitto 5:ea7377f3d1af 110
Pokitto 5:ea7377f3d1af 111 /** A class for storing and calling a pointer to a static or member function (R ()(void))
Pokitto 5:ea7377f3d1af 112 */
Pokitto 5:ea7377f3d1af 113 template <typename R>
Pokitto 5:ea7377f3d1af 114 class FunctionPointerArg1<R, void>{
Pokitto 5:ea7377f3d1af 115 public:
Pokitto 5:ea7377f3d1af 116 /** Create a FunctionPointer, attaching a static function
Pokitto 5:ea7377f3d1af 117 *
Pokitto 5:ea7377f3d1af 118 * @param function The static function to attach (default is none)
Pokitto 5:ea7377f3d1af 119 */
Pokitto 5:ea7377f3d1af 120 FunctionPointerArg1(R (*function)(void) = 0) {
Pokitto 5:ea7377f3d1af 121 attach(function);
Pokitto 5:ea7377f3d1af 122 }
Pokitto 5:ea7377f3d1af 123
Pokitto 5:ea7377f3d1af 124 /** Create a FunctionPointer, attaching a member function
Pokitto 5:ea7377f3d1af 125 *
Pokitto 5:ea7377f3d1af 126 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:ea7377f3d1af 127 * @param function The address of the void member function to attach
Pokitto 5:ea7377f3d1af 128 */
Pokitto 5:ea7377f3d1af 129 template<typename T>
Pokitto 5:ea7377f3d1af 130 FunctionPointerArg1(T *object, R (T::*member)(void)) {
Pokitto 5:ea7377f3d1af 131 attach(object, member);
Pokitto 5:ea7377f3d1af 132 }
Pokitto 5:ea7377f3d1af 133
Pokitto 5:ea7377f3d1af 134 /** Attach a static function
Pokitto 5:ea7377f3d1af 135 *
Pokitto 5:ea7377f3d1af 136 * @param function The void static function to attach (default is none)
Pokitto 5:ea7377f3d1af 137 */
Pokitto 5:ea7377f3d1af 138 void attach(R (*function)(void)) {
Pokitto 5:ea7377f3d1af 139 _p.function = function;
Pokitto 5:ea7377f3d1af 140 _membercaller = 0;
Pokitto 5:ea7377f3d1af 141 }
Pokitto 5:ea7377f3d1af 142
Pokitto 5:ea7377f3d1af 143 /** Attach a member function
Pokitto 5:ea7377f3d1af 144 *
Pokitto 5:ea7377f3d1af 145 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:ea7377f3d1af 146 * @param function The address of the void member function to attach
Pokitto 5:ea7377f3d1af 147 */
Pokitto 5:ea7377f3d1af 148 template<typename T>
Pokitto 5:ea7377f3d1af 149 void attach(T *object, R (T::*member)(void)) {
Pokitto 5:ea7377f3d1af 150 _p.object = static_cast<void*>(object);
Pokitto 5:ea7377f3d1af 151 *reinterpret_cast<R (T::**)(void)>(_member) = member;
Pokitto 5:ea7377f3d1af 152 _membercaller = &FunctionPointerArg1::membercaller<T>;
Pokitto 5:ea7377f3d1af 153 }
Pokitto 5:ea7377f3d1af 154
Pokitto 5:ea7377f3d1af 155 /** Call the attached static or member function
Pokitto 5:ea7377f3d1af 156 */
Pokitto 5:ea7377f3d1af 157 R call(){
Pokitto 5:ea7377f3d1af 158 if (_membercaller == 0 && _p.function) {
Pokitto 5:ea7377f3d1af 159 return _p.function();
Pokitto 5:ea7377f3d1af 160 } else if (_membercaller && _p.object) {
Pokitto 5:ea7377f3d1af 161 return _membercaller(_p.object, _member);
Pokitto 5:ea7377f3d1af 162 }
Pokitto 5:ea7377f3d1af 163 return (R)0;
Pokitto 5:ea7377f3d1af 164 }
Pokitto 5:ea7377f3d1af 165
Pokitto 5:ea7377f3d1af 166 /** Get registered static function
Pokitto 5:ea7377f3d1af 167 */
Pokitto 5:ea7377f3d1af 168 R(*get_function())() {
Pokitto 5:ea7377f3d1af 169 return _membercaller ? (R(*)())0 : (R(*)())_p.function;
Pokitto 5:ea7377f3d1af 170 }
Pokitto 5:ea7377f3d1af 171
Pokitto 5:ea7377f3d1af 172 #ifdef MBED_OPERATORS
Pokitto 5:ea7377f3d1af 173 R operator ()(void) {
Pokitto 5:ea7377f3d1af 174 return call();
Pokitto 5:ea7377f3d1af 175 }
Pokitto 5:ea7377f3d1af 176 operator bool(void) const {
Pokitto 5:ea7377f3d1af 177 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
Pokitto 5:ea7377f3d1af 178 }
Pokitto 5:ea7377f3d1af 179 #endif
Pokitto 5:ea7377f3d1af 180
Pokitto 5:ea7377f3d1af 181 private:
Pokitto 5:ea7377f3d1af 182 template<typename T>
Pokitto 5:ea7377f3d1af 183 static R membercaller(void *object, uintptr_t *member) {
Pokitto 5:ea7377f3d1af 184 T* o = static_cast<T*>(object);
Pokitto 5:ea7377f3d1af 185 R (T::**m)(void) = reinterpret_cast<R (T::**)(void)>(member);
Pokitto 5:ea7377f3d1af 186 return (o->**m)();
Pokitto 5:ea7377f3d1af 187 }
Pokitto 5:ea7377f3d1af 188
Pokitto 5:ea7377f3d1af 189 union {
Pokitto 5:ea7377f3d1af 190 R (*function)(void); // static function pointer
Pokitto 5:ea7377f3d1af 191 void *object; // object this pointer
Pokitto 5:ea7377f3d1af 192 } _p;
Pokitto 5:ea7377f3d1af 193 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
Pokitto 5:ea7377f3d1af 194 R (*_membercaller)(void*, uintptr_t*); // registered membercaller function to convert back and call _m.member on _object
Pokitto 5:ea7377f3d1af 195 };
Pokitto 5:ea7377f3d1af 196
Pokitto 5:ea7377f3d1af 197 typedef FunctionPointerArg1<void, void> FunctionPointer;
Pokitto 5:ea7377f3d1af 198 typedef FunctionPointerArg1<void, int> event_callback_t;
Pokitto 5:ea7377f3d1af 199
Pokitto 5:ea7377f3d1af 200 } // namespace mbed
Pokitto 5:ea7377f3d1af 201
Pokitto 5:ea7377f3d1af 202 #endif