Tamura Mizuki / STM32F746_FFT

fft

Dependencies:   BSP_DISCO_F746NG SDFileSystem_Warning_Fixed

mbed_src_STM32F7/common/InterruptManager.cpp@3:6f7e05dd8d15, 2020-03-06 (annotated)

Committer:
aria19970520
Date:
Fri Mar 06 06:52:14 2020 +0000
Revision:
3:6f7e05dd8d15
Parent:
0:3e46577dc273 
fft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:3e46577dc273 1 #include "cmsis.h"
MikamiUitOpen 0:3e46577dc273 2 #if defined(NVIC_NUM_VECTORS)
MikamiUitOpen 0:3e46577dc273 3
MikamiUitOpen 0:3e46577dc273 4 #include "InterruptManager.h"
MikamiUitOpen 0:3e46577dc273 5 #include <string.h>
MikamiUitOpen 0:3e46577dc273 6
MikamiUitOpen 0:3e46577dc273 7 #define CHAIN_INITIAL_SIZE 4
MikamiUitOpen 0:3e46577dc273 8
MikamiUitOpen 0:3e46577dc273 9 namespace mbed {
MikamiUitOpen 0:3e46577dc273 10
MikamiUitOpen 0:3e46577dc273 11 typedef void (*pvoidf)(void);
MikamiUitOpen 0:3e46577dc273 12
MikamiUitOpen 0:3e46577dc273 13 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
MikamiUitOpen 0:3e46577dc273 14
MikamiUitOpen 0:3e46577dc273 15 InterruptManager* InterruptManager::get() {
MikamiUitOpen 0:3e46577dc273 16 if (NULL == _instance)
MikamiUitOpen 0:3e46577dc273 17 _instance = new InterruptManager();
MikamiUitOpen 0:3e46577dc273 18 return _instance;
MikamiUitOpen 0:3e46577dc273 19 }
MikamiUitOpen 0:3e46577dc273 20
MikamiUitOpen 0:3e46577dc273 21 InterruptManager::InterruptManager() {
MikamiUitOpen 0:3e46577dc273 22 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
MikamiUitOpen 0:3e46577dc273 23 }
MikamiUitOpen 0:3e46577dc273 24
MikamiUitOpen 0:3e46577dc273 25 void InterruptManager::destroy() {
MikamiUitOpen 0:3e46577dc273 26 // Not a good idea to call this unless NO interrupt at all
MikamiUitOpen 0:3e46577dc273 27 // is under the control of the handler; otherwise, a system crash
MikamiUitOpen 0:3e46577dc273 28 // is very likely to occur
MikamiUitOpen 0:3e46577dc273 29 if (NULL != _instance) {
MikamiUitOpen 0:3e46577dc273 30 delete _instance;
MikamiUitOpen 0:3e46577dc273 31 _instance = (InterruptManager*)NULL;
MikamiUitOpen 0:3e46577dc273 32 }
MikamiUitOpen 0:3e46577dc273 33 }
MikamiUitOpen 0:3e46577dc273 34
MikamiUitOpen 0:3e46577dc273 35 InterruptManager::~InterruptManager() {
MikamiUitOpen 0:3e46577dc273 36 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
MikamiUitOpen 0:3e46577dc273 37 if (NULL != _chains[i])
MikamiUitOpen 0:3e46577dc273 38 delete _chains[i];
MikamiUitOpen 0:3e46577dc273 39 }
MikamiUitOpen 0:3e46577dc273 40
MikamiUitOpen 0:3e46577dc273 41 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
MikamiUitOpen 0:3e46577dc273 42 int irq_pos = get_irq_index(irq);
MikamiUitOpen 0:3e46577dc273 43
MikamiUitOpen 0:3e46577dc273 44 if (NULL == _chains[irq_pos]) {
MikamiUitOpen 0:3e46577dc273 45 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
MikamiUitOpen 0:3e46577dc273 46 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
MikamiUitOpen 0:3e46577dc273 47 return true;
MikamiUitOpen 0:3e46577dc273 48 }
MikamiUitOpen 0:3e46577dc273 49 return false;
MikamiUitOpen 0:3e46577dc273 50 }
MikamiUitOpen 0:3e46577dc273 51
MikamiUitOpen 0:3e46577dc273 52 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
MikamiUitOpen 0:3e46577dc273 53 int irq_pos = get_irq_index(irq);
MikamiUitOpen 0:3e46577dc273 54 bool change = must_replace_vector(irq);
MikamiUitOpen 0:3e46577dc273 55
MikamiUitOpen 0:3e46577dc273 56 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
MikamiUitOpen 0:3e46577dc273 57 if (change)
MikamiUitOpen 0:3e46577dc273 58 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
MikamiUitOpen 0:3e46577dc273 59 return pf;
MikamiUitOpen 0:3e46577dc273 60 }
MikamiUitOpen 0:3e46577dc273 61
MikamiUitOpen 0:3e46577dc273 62 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
MikamiUitOpen 0:3e46577dc273 63 int irq_pos = get_irq_index(irq);
MikamiUitOpen 0:3e46577dc273 64
MikamiUitOpen 0:3e46577dc273 65 if (NULL == _chains[irq_pos])
MikamiUitOpen 0:3e46577dc273 66 return false;
MikamiUitOpen 0:3e46577dc273 67 if (!_chains[irq_pos]->remove(handler))
MikamiUitOpen 0:3e46577dc273 68 return false;
MikamiUitOpen 0:3e46577dc273 69 // If there's a single function left in the chain, swith the interrupt vector
MikamiUitOpen 0:3e46577dc273 70 // to call that function directly. This way we save both time and space.
MikamiUitOpen 0:3e46577dc273 71 if (_chains[irq_pos]->size() == 1 && NULL != _chains[irq_pos]->get(0)->get_function()) {
MikamiUitOpen 0:3e46577dc273 72 NVIC_SetVector(irq, (uint32_t)_chains[irq_pos]->get(0)->get_function());
MikamiUitOpen 0:3e46577dc273 73 delete _chains[irq_pos];
MikamiUitOpen 0:3e46577dc273 74 _chains[irq_pos] = (CallChain*) NULL;
MikamiUitOpen 0:3e46577dc273 75 }
MikamiUitOpen 0:3e46577dc273 76 return true;
MikamiUitOpen 0:3e46577dc273 77 }
MikamiUitOpen 0:3e46577dc273 78
MikamiUitOpen 0:3e46577dc273 79 void InterruptManager::irq_helper() {
MikamiUitOpen 0:3e46577dc273 80 _chains[__get_IPSR()]->call();
MikamiUitOpen 0:3e46577dc273 81 }
MikamiUitOpen 0:3e46577dc273 82
MikamiUitOpen 0:3e46577dc273 83 int InterruptManager::get_irq_index(IRQn_Type irq) {
MikamiUitOpen 0:3e46577dc273 84 return (int)irq + NVIC_USER_IRQ_OFFSET;
MikamiUitOpen 0:3e46577dc273 85 }
MikamiUitOpen 0:3e46577dc273 86
MikamiUitOpen 0:3e46577dc273 87 void InterruptManager::static_irq_helper() {
MikamiUitOpen 0:3e46577dc273 88 InterruptManager::get()->irq_helper();
MikamiUitOpen 0:3e46577dc273 89 }
MikamiUitOpen 0:3e46577dc273 90
MikamiUitOpen 0:3e46577dc273 91 } // namespace mbed
MikamiUitOpen 0:3e46577dc273 92
MikamiUitOpen 0:3e46577dc273 93 #endif