FFT LED Display / 4180_EditThis_copy_Demo_Test

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Dependencies:   FFT

mbed/drivers/InterruptManager.h@11:951bbb0385aa, 2020-12-04 (annotated)

Committer:
dimitryjl23
Date:
Fri Dec 04 18:01:22 2020 +0000
Revision:
11:951bbb0385aa
Parent:
0:d6c9b09b4042 
Final :)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
annieluo2 0:d6c9b09b4042 1 /* mbed Microcontroller Library
annieluo2 0:d6c9b09b4042 2 * Copyright (c) 2006-2013 ARM Limited
annieluo2 0:d6c9b09b4042 3 *
annieluo2 0:d6c9b09b4042 4 * Licensed under the Apache License, Version 2.0 (the "License");
annieluo2 0:d6c9b09b4042 5 * you may not use this file except in compliance with the License.
annieluo2 0:d6c9b09b4042 6 * You may obtain a copy of the License at
annieluo2 0:d6c9b09b4042 7 *
annieluo2 0:d6c9b09b4042 8 * http://www.apache.org/licenses/LICENSE-2.0
annieluo2 0:d6c9b09b4042 9 *
annieluo2 0:d6c9b09b4042 10 * Unless required by applicable law or agreed to in writing, software
annieluo2 0:d6c9b09b4042 11 * distributed under the License is distributed on an "AS IS" BASIS,
annieluo2 0:d6c9b09b4042 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
annieluo2 0:d6c9b09b4042 13 * See the License for the specific language governing permissions and
annieluo2 0:d6c9b09b4042 14 * limitations under the License.
annieluo2 0:d6c9b09b4042 15 */
annieluo2 0:d6c9b09b4042 16 #ifndef MBED_INTERRUPTMANAGER_H
annieluo2 0:d6c9b09b4042 17 #define MBED_INTERRUPTMANAGER_H
annieluo2 0:d6c9b09b4042 18
annieluo2 0:d6c9b09b4042 19 #include "cmsis.h"
annieluo2 0:d6c9b09b4042 20 #include "platform/CallChain.h"
annieluo2 0:d6c9b09b4042 21 #include "platform/PlatformMutex.h"
annieluo2 0:d6c9b09b4042 22 #include <string.h>
annieluo2 0:d6c9b09b4042 23
annieluo2 0:d6c9b09b4042 24 namespace mbed {
annieluo2 0:d6c9b09b4042 25 /** \addtogroup drivers */
annieluo2 0:d6c9b09b4042 26 /** @{*/
annieluo2 0:d6c9b09b4042 27
annieluo2 0:d6c9b09b4042 28 /** Use this singleton if you need to chain interrupt handlers.
annieluo2 0:d6c9b09b4042 29 *
annieluo2 0:d6c9b09b4042 30 * @Note Synchronization level: Thread safe
annieluo2 0:d6c9b09b4042 31 *
annieluo2 0:d6c9b09b4042 32 * Example (for LPC1768):
annieluo2 0:d6c9b09b4042 33 * @code
annieluo2 0:d6c9b09b4042 34 * #include "InterruptManager.h"
annieluo2 0:d6c9b09b4042 35 * #include "mbed.h"
annieluo2 0:d6c9b09b4042 36 *
annieluo2 0:d6c9b09b4042 37 * Ticker flipper;
annieluo2 0:d6c9b09b4042 38 * DigitalOut led1(LED1);
annieluo2 0:d6c9b09b4042 39 * DigitalOut led2(LED2);
annieluo2 0:d6c9b09b4042 40 *
annieluo2 0:d6c9b09b4042 41 * void flip(void) {
annieluo2 0:d6c9b09b4042 42 * led1 = !led1;
annieluo2 0:d6c9b09b4042 43 * }
annieluo2 0:d6c9b09b4042 44 *
annieluo2 0:d6c9b09b4042 45 * void handler(void) {
annieluo2 0:d6c9b09b4042 46 * led2 = !led1;
annieluo2 0:d6c9b09b4042 47 * }
annieluo2 0:d6c9b09b4042 48 *
annieluo2 0:d6c9b09b4042 49 * int main() {
annieluo2 0:d6c9b09b4042 50 * led1 = led2 = 0;
annieluo2 0:d6c9b09b4042 51 * flipper.attach(&flip, 1.0);
annieluo2 0:d6c9b09b4042 52 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
annieluo2 0:d6c9b09b4042 53 * }
annieluo2 0:d6c9b09b4042 54 * @endcode
annieluo2 0:d6c9b09b4042 55 */
annieluo2 0:d6c9b09b4042 56 class InterruptManager {
annieluo2 0:d6c9b09b4042 57 public:
annieluo2 0:d6c9b09b4042 58 /** Return the only instance of this class
annieluo2 0:d6c9b09b4042 59 */
annieluo2 0:d6c9b09b4042 60 static InterruptManager* get();
annieluo2 0:d6c9b09b4042 61
annieluo2 0:d6c9b09b4042 62 /** Destroy the current instance of the interrupt manager
annieluo2 0:d6c9b09b4042 63 */
annieluo2 0:d6c9b09b4042 64 static void destroy();
annieluo2 0:d6c9b09b4042 65
annieluo2 0:d6c9b09b4042 66 /** Add a handler for an interrupt at the end of the handler list
annieluo2 0:d6c9b09b4042 67 *
annieluo2 0:d6c9b09b4042 68 * @param function the handler to add
annieluo2 0:d6c9b09b4042 69 * @param irq interrupt number
annieluo2 0:d6c9b09b4042 70 *
annieluo2 0:d6c9b09b4042 71 * @returns
annieluo2 0:d6c9b09b4042 72 * The function object created for 'function'
annieluo2 0:d6c9b09b4042 73 */
annieluo2 0:d6c9b09b4042 74 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
annieluo2 0:d6c9b09b4042 75 // Underlying call is thread safe
annieluo2 0:d6c9b09b4042 76 return add_common(function, irq);
annieluo2 0:d6c9b09b4042 77 }
annieluo2 0:d6c9b09b4042 78
annieluo2 0:d6c9b09b4042 79 /** Add a handler for an interrupt at the beginning of the handler list
annieluo2 0:d6c9b09b4042 80 *
annieluo2 0:d6c9b09b4042 81 * @param function the handler to add
annieluo2 0:d6c9b09b4042 82 * @param irq interrupt number
annieluo2 0:d6c9b09b4042 83 *
annieluo2 0:d6c9b09b4042 84 * @returns
annieluo2 0:d6c9b09b4042 85 * The function object created for 'function'
annieluo2 0:d6c9b09b4042 86 */
annieluo2 0:d6c9b09b4042 87 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
annieluo2 0:d6c9b09b4042 88 // Underlying call is thread safe
annieluo2 0:d6c9b09b4042 89 return add_common(function, irq, true);
annieluo2 0:d6c9b09b4042 90 }
annieluo2 0:d6c9b09b4042 91
annieluo2 0:d6c9b09b4042 92 /** Add a handler for an interrupt at the end of the handler list
annieluo2 0:d6c9b09b4042 93 *
annieluo2 0:d6c9b09b4042 94 * @param tptr pointer to the object that has the handler function
annieluo2 0:d6c9b09b4042 95 * @param mptr pointer to the actual handler function
annieluo2 0:d6c9b09b4042 96 * @param irq interrupt number
annieluo2 0:d6c9b09b4042 97 *
annieluo2 0:d6c9b09b4042 98 * @returns
annieluo2 0:d6c9b09b4042 99 * The function object created for 'tptr' and 'mptr'
annieluo2 0:d6c9b09b4042 100 */
annieluo2 0:d6c9b09b4042 101 template<typename T>
annieluo2 0:d6c9b09b4042 102 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
annieluo2 0:d6c9b09b4042 103 // Underlying call is thread safe
annieluo2 0:d6c9b09b4042 104 return add_common(tptr, mptr, irq);
annieluo2 0:d6c9b09b4042 105 }
annieluo2 0:d6c9b09b4042 106
annieluo2 0:d6c9b09b4042 107 /** Add a handler for an interrupt at the beginning of the handler list
annieluo2 0:d6c9b09b4042 108 *
annieluo2 0:d6c9b09b4042 109 * @param tptr pointer to the object that has the handler function
annieluo2 0:d6c9b09b4042 110 * @param mptr pointer to the actual handler function
annieluo2 0:d6c9b09b4042 111 * @param irq interrupt number
annieluo2 0:d6c9b09b4042 112 *
annieluo2 0:d6c9b09b4042 113 * @returns
annieluo2 0:d6c9b09b4042 114 * The function object created for 'tptr' and 'mptr'
annieluo2 0:d6c9b09b4042 115 */
annieluo2 0:d6c9b09b4042 116 template<typename T>
annieluo2 0:d6c9b09b4042 117 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
annieluo2 0:d6c9b09b4042 118 // Underlying call is thread safe
annieluo2 0:d6c9b09b4042 119 return add_common(tptr, mptr, irq, true);
annieluo2 0:d6c9b09b4042 120 }
annieluo2 0:d6c9b09b4042 121
annieluo2 0:d6c9b09b4042 122 /** Remove a handler from an interrupt
annieluo2 0:d6c9b09b4042 123 *
annieluo2 0:d6c9b09b4042 124 * @param handler the function object for the handler to remove
annieluo2 0:d6c9b09b4042 125 * @param irq the interrupt number
annieluo2 0:d6c9b09b4042 126 *
annieluo2 0:d6c9b09b4042 127 * @returns
annieluo2 0:d6c9b09b4042 128 * true if the handler was found and removed, false otherwise
annieluo2 0:d6c9b09b4042 129 */
annieluo2 0:d6c9b09b4042 130 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
annieluo2 0:d6c9b09b4042 131
annieluo2 0:d6c9b09b4042 132 private:
annieluo2 0:d6c9b09b4042 133 InterruptManager();
annieluo2 0:d6c9b09b4042 134 ~InterruptManager();
annieluo2 0:d6c9b09b4042 135
annieluo2 0:d6c9b09b4042 136 void lock();
annieluo2 0:d6c9b09b4042 137 void unlock();
annieluo2 0:d6c9b09b4042 138
annieluo2 0:d6c9b09b4042 139 // We declare the copy contructor and the assignment operator, but we don't
annieluo2 0:d6c9b09b4042 140 // implement them. This way, if someone tries to copy/assign our instance,
annieluo2 0:d6c9b09b4042 141 // he will get an error at compile time.
annieluo2 0:d6c9b09b4042 142 InterruptManager(const InterruptManager&);
annieluo2 0:d6c9b09b4042 143 InterruptManager& operator =(const InterruptManager&);
annieluo2 0:d6c9b09b4042 144
annieluo2 0:d6c9b09b4042 145 template<typename T>
annieluo2 0:d6c9b09b4042 146 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
annieluo2 0:d6c9b09b4042 147 _mutex.lock();
annieluo2 0:d6c9b09b4042 148 int irq_pos = get_irq_index(irq);
annieluo2 0:d6c9b09b4042 149 bool change = must_replace_vector(irq);
annieluo2 0:d6c9b09b4042 150
annieluo2 0:d6c9b09b4042 151 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
annieluo2 0:d6c9b09b4042 152 if (change)
annieluo2 0:d6c9b09b4042 153 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
annieluo2 0:d6c9b09b4042 154 _mutex.unlock();
annieluo2 0:d6c9b09b4042 155 return pf;
annieluo2 0:d6c9b09b4042 156 }
annieluo2 0:d6c9b09b4042 157
annieluo2 0:d6c9b09b4042 158 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
annieluo2 0:d6c9b09b4042 159 bool must_replace_vector(IRQn_Type irq);
annieluo2 0:d6c9b09b4042 160 int get_irq_index(IRQn_Type irq);
annieluo2 0:d6c9b09b4042 161 void irq_helper();
annieluo2 0:d6c9b09b4042 162 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
annieluo2 0:d6c9b09b4042 163 static void static_irq_helper();
annieluo2 0:d6c9b09b4042 164
annieluo2 0:d6c9b09b4042 165 CallChain* _chains[NVIC_NUM_VECTORS];
annieluo2 0:d6c9b09b4042 166 static InterruptManager* _instance;
annieluo2 0:d6c9b09b4042 167 PlatformMutex _mutex;
annieluo2 0:d6c9b09b4042 168 };
annieluo2 0:d6c9b09b4042 169
annieluo2 0:d6c9b09b4042 170 } // namespace mbed
annieluo2 0:d6c9b09b4042 171
annieluo2 0:d6c9b09b4042 172 #endif
annieluo2 0:d6c9b09b4042 173
annieluo2 0:d6c9b09b4042 174
annieluo2 0:d6c9b09b4042 175 /** @}*/