mbed-src updated for BMD-200 evaluation board. Just pin numbers are updated.
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FunctionPointer.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2015 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #ifndef MBED_FUNCTIONPOINTER_H 00017 #define MBED_FUNCTIONPOINTER_H 00018 00019 #include <string.h> 00020 #include <stdint.h> 00021 00022 namespace mbed { 00023 00024 /* If we had variaditic templates, this wouldn't be a problem, but until C++11 is enabled, we are stuck with multiple classes... */ 00025 00026 /** A class for storing and calling a pointer to a static or member function 00027 */ 00028 template <typename R, typename A1> 00029 class FunctionPointerArg1{ 00030 public: 00031 /** Create a FunctionPointer, attaching a static function 00032 * 00033 * @param function The static function to attach (default is none) 00034 */ 00035 FunctionPointerArg1(R (*function)(A1) = 0) { 00036 attach(function); 00037 } 00038 00039 /** Create a FunctionPointer, attaching a member function 00040 * 00041 * @param object The object pointer to invoke the member function on (i.e. the this pointer) 00042 * @param function The address of the member function to attach 00043 */ 00044 template<typename T> 00045 FunctionPointerArg1(T *object, R (T::*member)(A1)) { 00046 attach(object, member); 00047 } 00048 00049 /** Attach a static function 00050 * 00051 * @param function The static function to attach (default is none) 00052 */ 00053 void attach(R (*function)(A1)) { 00054 _p.function = function; 00055 _membercaller = 0; 00056 } 00057 00058 /** Attach a member function 00059 * 00060 * @param object The object pointer to invoke the member function on (i.e. the this pointer) 00061 * @param function The address of the member function to attach 00062 */ 00063 template<typename T> 00064 void attach(T *object, R (T::*member)(A1)) { 00065 _p.object = static_cast<void*>(object); 00066 *reinterpret_cast<R (T::**)(A1)>(_member) = member; 00067 _membercaller = &FunctionPointerArg1::membercaller<T>; 00068 } 00069 00070 /** Call the attached static or member function 00071 */ 00072 R call(A1 a) { 00073 if (_membercaller == 0 && _p.function) { 00074 return _p.function(a); 00075 } else if (_membercaller && _p.object) { 00076 return _membercaller(_p.object, _member, a); 00077 } 00078 return (R)0; 00079 } 00080 00081 /** Get registered static function 00082 */ 00083 R(*get_function(A1))() { 00084 return _membercaller ? (R(*)(A1))0 : (R(*)(A1))_p.function; 00085 } 00086 00087 #ifdef MBED_OPERATORS 00088 R operator ()(A1 a) { 00089 return call(a); 00090 } 00091 operator bool(void) const { 00092 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL; 00093 } 00094 #endif 00095 private: 00096 template<typename T> 00097 static R membercaller(void *object, uintptr_t *member, A1 a) { 00098 T* o = static_cast<T*>(object); 00099 R (T::**m)(A1) = reinterpret_cast<R (T::**)(A1)>(member); 00100 return (o->**m)(a); 00101 } 00102 00103 union { 00104 R (*function)(A1); // static function pointer 00105 void *object; // object this pointer 00106 } _p; 00107 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller 00108 R (*_membercaller)(void*, uintptr_t*, A1); // registered membercaller function to convert back and call _m.member on _object 00109 }; 00110 00111 /** A class for storing and calling a pointer to a static or member function (R ()(void)) 00112 */ 00113 template <typename R> 00114 class FunctionPointerArg1<R, void>{ 00115 public: 00116 /** Create a FunctionPointer, attaching a static function 00117 * 00118 * @param function The static function to attach (default is none) 00119 */ 00120 FunctionPointerArg1(R (*function)(void) = 0) { 00121 attach(function); 00122 } 00123 00124 /** Create a FunctionPointer, attaching a member function 00125 * 00126 * @param object The object pointer to invoke the member function on (i.e. the this pointer) 00127 * @param function The address of the void member function to attach 00128 */ 00129 template<typename T> 00130 FunctionPointerArg1(T *object, R (T::*member)(void)) { 00131 attach(object, member); 00132 } 00133 00134 /** Attach a static function 00135 * 00136 * @param function The void static function to attach (default is none) 00137 */ 00138 void attach(R (*function)(void)) { 00139 _p.function = function; 00140 _membercaller = 0; 00141 } 00142 00143 /** Attach a member function 00144 * 00145 * @param object The object pointer to invoke the member function on (i.e. the this pointer) 00146 * @param function The address of the void member function to attach 00147 */ 00148 template<typename T> 00149 void attach(T *object, R (T::*member)(void)) { 00150 _p.object = static_cast<void*>(object); 00151 *reinterpret_cast<R (T::**)(void)>(_member) = member; 00152 _membercaller = &FunctionPointerArg1::membercaller<T>; 00153 } 00154 00155 /** Call the attached static or member function 00156 */ 00157 R call(){ 00158 if (_membercaller == 0 && _p.function) { 00159 return _p.function(); 00160 } else if (_membercaller && _p.object) { 00161 return _membercaller(_p.object, _member); 00162 } 00163 return (R)0; 00164 } 00165 00166 /** Get registered static function 00167 */ 00168 R(*get_function())() { 00169 return _membercaller ? (R(*)())0 : (R(*)())_p.function; 00170 } 00171 00172 #ifdef MBED_OPERATORS 00173 R operator ()(void) { 00174 return call(); 00175 } 00176 operator bool(void) const { 00177 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL; 00178 } 00179 #endif 00180 00181 private: 00182 template<typename T> 00183 static R membercaller(void *object, uintptr_t *member) { 00184 T* o = static_cast<T*>(object); 00185 R (T::**m)(void) = reinterpret_cast<R (T::**)(void)>(member); 00186 return (o->**m)(); 00187 } 00188 00189 union { 00190 R (*function)(void); // static function pointer 00191 void *object; // object this pointer 00192 } _p; 00193 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller 00194 R (*_membercaller)(void*, uintptr_t*); // registered membercaller function to convert back and call _m.member on _object 00195 }; 00196 00197 typedef FunctionPointerArg1<void, void> FunctionPointer; 00198 typedef FunctionPointerArg1<void, int> event_callback_t; 00199 00200 } // namespace mbed 00201 00202 #endif
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