PHung Tung / SRC_STM32F7

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Dependents:   WAV

common/InterruptManager.cpp@0:e87aa4c49e95, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:51:46 2019 +0000
Revision:
0:e87aa4c49e95
libray

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 0:e87aa4c49e95 1 #include "cmsis.h"
phungductung 0:e87aa4c49e95 2 #if defined(NVIC_NUM_VECTORS)
phungductung 0:e87aa4c49e95 3
phungductung 0:e87aa4c49e95 4 #include "InterruptManager.h"
phungductung 0:e87aa4c49e95 5 #include <string.h>
phungductung 0:e87aa4c49e95 6
phungductung 0:e87aa4c49e95 7 #define CHAIN_INITIAL_SIZE 4
phungductung 0:e87aa4c49e95 8
phungductung 0:e87aa4c49e95 9 namespace mbed {
phungductung 0:e87aa4c49e95 10
phungductung 0:e87aa4c49e95 11 typedef void (*pvoidf)(void);
phungductung 0:e87aa4c49e95 12
phungductung 0:e87aa4c49e95 13 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
phungductung 0:e87aa4c49e95 14
phungductung 0:e87aa4c49e95 15 InterruptManager* InterruptManager::get() {
phungductung 0:e87aa4c49e95 16 if (NULL == _instance)
phungductung 0:e87aa4c49e95 17 _instance = new InterruptManager();
phungductung 0:e87aa4c49e95 18 return _instance;
phungductung 0:e87aa4c49e95 19 }
phungductung 0:e87aa4c49e95 20
phungductung 0:e87aa4c49e95 21 InterruptManager::InterruptManager() {
phungductung 0:e87aa4c49e95 22 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
phungductung 0:e87aa4c49e95 23 }
phungductung 0:e87aa4c49e95 24
phungductung 0:e87aa4c49e95 25 void InterruptManager::destroy() {
phungductung 0:e87aa4c49e95 26 // Not a good idea to call this unless NO interrupt at all
phungductung 0:e87aa4c49e95 27 // is under the control of the handler; otherwise, a system crash
phungductung 0:e87aa4c49e95 28 // is very likely to occur
phungductung 0:e87aa4c49e95 29 if (NULL != _instance) {
phungductung 0:e87aa4c49e95 30 delete _instance;
phungductung 0:e87aa4c49e95 31 _instance = (InterruptManager*)NULL;
phungductung 0:e87aa4c49e95 32 }
phungductung 0:e87aa4c49e95 33 }
phungductung 0:e87aa4c49e95 34
phungductung 0:e87aa4c49e95 35 InterruptManager::~InterruptManager() {
phungductung 0:e87aa4c49e95 36 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
phungductung 0:e87aa4c49e95 37 if (NULL != _chains[i])
phungductung 0:e87aa4c49e95 38 delete _chains[i];
phungductung 0:e87aa4c49e95 39 }
phungductung 0:e87aa4c49e95 40
phungductung 0:e87aa4c49e95 41 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
phungductung 0:e87aa4c49e95 42 int irq_pos = get_irq_index(irq);
phungductung 0:e87aa4c49e95 43
phungductung 0:e87aa4c49e95 44 if (NULL == _chains[irq_pos]) {
phungductung 0:e87aa4c49e95 45 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
phungductung 0:e87aa4c49e95 46 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
phungductung 0:e87aa4c49e95 47 return true;
phungductung 0:e87aa4c49e95 48 }
phungductung 0:e87aa4c49e95 49 return false;
phungductung 0:e87aa4c49e95 50 }
phungductung 0:e87aa4c49e95 51
phungductung 0:e87aa4c49e95 52 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
phungductung 0:e87aa4c49e95 53 int irq_pos = get_irq_index(irq);
phungductung 0:e87aa4c49e95 54 bool change = must_replace_vector(irq);
phungductung 0:e87aa4c49e95 55
phungductung 0:e87aa4c49e95 56 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
phungductung 0:e87aa4c49e95 57 if (change)
phungductung 0:e87aa4c49e95 58 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
phungductung 0:e87aa4c49e95 59 return pf;
phungductung 0:e87aa4c49e95 60 }
phungductung 0:e87aa4c49e95 61
phungductung 0:e87aa4c49e95 62 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
phungductung 0:e87aa4c49e95 63 int irq_pos = get_irq_index(irq);
phungductung 0:e87aa4c49e95 64
phungductung 0:e87aa4c49e95 65 if (NULL == _chains[irq_pos])
phungductung 0:e87aa4c49e95 66 return false;
phungductung 0:e87aa4c49e95 67 if (!_chains[irq_pos]->remove(handler))
phungductung 0:e87aa4c49e95 68 return false;
phungductung 0:e87aa4c49e95 69 // If there's a single function left in the chain, swith the interrupt vector
phungductung 0:e87aa4c49e95 70 // to call that function directly. This way we save both time and space.
phungductung 0:e87aa4c49e95 71 if (_chains[irq_pos]->size() == 1 && NULL != _chains[irq_pos]->get(0)->get_function()) {
phungductung 0:e87aa4c49e95 72 NVIC_SetVector(irq, (uint32_t)_chains[irq_pos]->get(0)->get_function());
phungductung 0:e87aa4c49e95 73 delete _chains[irq_pos];
phungductung 0:e87aa4c49e95 74 _chains[irq_pos] = (CallChain*) NULL;
phungductung 0:e87aa4c49e95 75 }
phungductung 0:e87aa4c49e95 76 return true;
phungductung 0:e87aa4c49e95 77 }
phungductung 0:e87aa4c49e95 78
phungductung 0:e87aa4c49e95 79 void InterruptManager::irq_helper() {
phungductung 0:e87aa4c49e95 80 _chains[__get_IPSR()]->call();
phungductung 0:e87aa4c49e95 81 }
phungductung 0:e87aa4c49e95 82
phungductung 0:e87aa4c49e95 83 int InterruptManager::get_irq_index(IRQn_Type irq) {
phungductung 0:e87aa4c49e95 84 return (int)irq + NVIC_USER_IRQ_OFFSET;
phungductung 0:e87aa4c49e95 85 }
phungductung 0:e87aa4c49e95 86
phungductung 0:e87aa4c49e95 87 void InterruptManager::static_irq_helper() {
phungductung 0:e87aa4c49e95 88 InterruptManager::get()->irq_helper();
phungductung 0:e87aa4c49e95 89 }
phungductung 0:e87aa4c49e95 90
phungductung 0:e87aa4c49e95 91 } // namespace mbed
phungductung 0:e87aa4c49e95 92
phungductung 0:e87aa4c49e95 93 #endif