不韋 呂 / F746_SD_Player_Demo

Demo program for library named SD_PlayerSkeleton of SD card player skeleton. SD カードプレーヤのための骨組みとして使うためのライブラリ SD_PlayerSkeleton の使用例．このプログラムについては，CQ出版社インターフェース誌 2018年7月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton

mbed_src_STM32F7/common/InterruptManager.cpp@19:3c3833ec00d2, 2017-04-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Apr 09 12:44:17 2017 +0000
Revision:
19:3c3833ec00d2
Parent:
2:cf42e62a97dc 
20

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:cf42e62a97dc 1 #include "cmsis.h"
MikamiUitOpen 2:cf42e62a97dc 2 #if defined(NVIC_NUM_VECTORS)
MikamiUitOpen 2:cf42e62a97dc 3
MikamiUitOpen 2:cf42e62a97dc 4 #include "InterruptManager.h"
MikamiUitOpen 2:cf42e62a97dc 5 #include <string.h>
MikamiUitOpen 2:cf42e62a97dc 6
MikamiUitOpen 2:cf42e62a97dc 7 #define CHAIN_INITIAL_SIZE 4
MikamiUitOpen 2:cf42e62a97dc 8
MikamiUitOpen 2:cf42e62a97dc 9 namespace mbed {
MikamiUitOpen 2:cf42e62a97dc 10
MikamiUitOpen 2:cf42e62a97dc 11 typedef void (*pvoidf)(void);
MikamiUitOpen 2:cf42e62a97dc 12
MikamiUitOpen 2:cf42e62a97dc 13 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
MikamiUitOpen 2:cf42e62a97dc 14
MikamiUitOpen 2:cf42e62a97dc 15 InterruptManager* InterruptManager::get() {
MikamiUitOpen 2:cf42e62a97dc 16 if (NULL == _instance)
MikamiUitOpen 2:cf42e62a97dc 17 _instance = new InterruptManager();
MikamiUitOpen 2:cf42e62a97dc 18 return _instance;
MikamiUitOpen 2:cf42e62a97dc 19 }
MikamiUitOpen 2:cf42e62a97dc 20
MikamiUitOpen 2:cf42e62a97dc 21 InterruptManager::InterruptManager() {
MikamiUitOpen 2:cf42e62a97dc 22 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
MikamiUitOpen 2:cf42e62a97dc 23 }
MikamiUitOpen 2:cf42e62a97dc 24
MikamiUitOpen 2:cf42e62a97dc 25 void InterruptManager::destroy() {
MikamiUitOpen 2:cf42e62a97dc 26 // Not a good idea to call this unless NO interrupt at all
MikamiUitOpen 2:cf42e62a97dc 27 // is under the control of the handler; otherwise, a system crash
MikamiUitOpen 2:cf42e62a97dc 28 // is very likely to occur
MikamiUitOpen 2:cf42e62a97dc 29 if (NULL != _instance) {
MikamiUitOpen 2:cf42e62a97dc 30 delete _instance;
MikamiUitOpen 2:cf42e62a97dc 31 _instance = (InterruptManager*)NULL;
MikamiUitOpen 2:cf42e62a97dc 32 }
MikamiUitOpen 2:cf42e62a97dc 33 }
MikamiUitOpen 2:cf42e62a97dc 34
MikamiUitOpen 2:cf42e62a97dc 35 InterruptManager::~InterruptManager() {
MikamiUitOpen 2:cf42e62a97dc 36 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
MikamiUitOpen 2:cf42e62a97dc 37 if (NULL != _chains[i])
MikamiUitOpen 2:cf42e62a97dc 38 delete _chains[i];
MikamiUitOpen 2:cf42e62a97dc 39 }
MikamiUitOpen 2:cf42e62a97dc 40
MikamiUitOpen 2:cf42e62a97dc 41 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
MikamiUitOpen 2:cf42e62a97dc 42 int irq_pos = get_irq_index(irq);
MikamiUitOpen 2:cf42e62a97dc 43
MikamiUitOpen 2:cf42e62a97dc 44 if (NULL == _chains[irq_pos]) {
MikamiUitOpen 2:cf42e62a97dc 45 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
MikamiUitOpen 2:cf42e62a97dc 46 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
MikamiUitOpen 2:cf42e62a97dc 47 return true;
MikamiUitOpen 2:cf42e62a97dc 48 }
MikamiUitOpen 2:cf42e62a97dc 49 return false;
MikamiUitOpen 2:cf42e62a97dc 50 }
MikamiUitOpen 2:cf42e62a97dc 51
MikamiUitOpen 2:cf42e62a97dc 52 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
MikamiUitOpen 2:cf42e62a97dc 53 int irq_pos = get_irq_index(irq);
MikamiUitOpen 2:cf42e62a97dc 54 bool change = must_replace_vector(irq);
MikamiUitOpen 2:cf42e62a97dc 55
MikamiUitOpen 2:cf42e62a97dc 56 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
MikamiUitOpen 2:cf42e62a97dc 57 if (change)
MikamiUitOpen 2:cf42e62a97dc 58 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
MikamiUitOpen 2:cf42e62a97dc 59 return pf;
MikamiUitOpen 2:cf42e62a97dc 60 }
MikamiUitOpen 2:cf42e62a97dc 61
MikamiUitOpen 2:cf42e62a97dc 62 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
MikamiUitOpen 2:cf42e62a97dc 63 int irq_pos = get_irq_index(irq);
MikamiUitOpen 2:cf42e62a97dc 64
MikamiUitOpen 2:cf42e62a97dc 65 if (NULL == _chains[irq_pos])
MikamiUitOpen 2:cf42e62a97dc 66 return false;
MikamiUitOpen 2:cf42e62a97dc 67 if (!_chains[irq_pos]->remove(handler))
MikamiUitOpen 2:cf42e62a97dc 68 return false;
MikamiUitOpen 2:cf42e62a97dc 69 // If there's a single function left in the chain, swith the interrupt vector
MikamiUitOpen 2:cf42e62a97dc 70 // to call that function directly. This way we save both time and space.
MikamiUitOpen 2:cf42e62a97dc 71 if (_chains[irq_pos]->size() == 1 && NULL != _chains[irq_pos]->get(0)->get_function()) {
MikamiUitOpen 2:cf42e62a97dc 72 NVIC_SetVector(irq, (uint32_t)_chains[irq_pos]->get(0)->get_function());
MikamiUitOpen 2:cf42e62a97dc 73 delete _chains[irq_pos];
MikamiUitOpen 2:cf42e62a97dc 74 _chains[irq_pos] = (CallChain*) NULL;
MikamiUitOpen 2:cf42e62a97dc 75 }
MikamiUitOpen 2:cf42e62a97dc 76 return true;
MikamiUitOpen 2:cf42e62a97dc 77 }
MikamiUitOpen 2:cf42e62a97dc 78
MikamiUitOpen 2:cf42e62a97dc 79 void InterruptManager::irq_helper() {
MikamiUitOpen 2:cf42e62a97dc 80 _chains[__get_IPSR()]->call();
MikamiUitOpen 2:cf42e62a97dc 81 }
MikamiUitOpen 2:cf42e62a97dc 82
MikamiUitOpen 2:cf42e62a97dc 83 int InterruptManager::get_irq_index(IRQn_Type irq) {
MikamiUitOpen 2:cf42e62a97dc 84 return (int)irq + NVIC_USER_IRQ_OFFSET;
MikamiUitOpen 2:cf42e62a97dc 85 }
MikamiUitOpen 2:cf42e62a97dc 86
MikamiUitOpen 2:cf42e62a97dc 87 void InterruptManager::static_irq_helper() {
MikamiUitOpen 2:cf42e62a97dc 88 InterruptManager::get()->irq_helper();
MikamiUitOpen 2:cf42e62a97dc 89 }
MikamiUitOpen 2:cf42e62a97dc 90
MikamiUitOpen 2:cf42e62a97dc 91 } // namespace mbed
MikamiUitOpen 2:cf42e62a97dc 92
MikamiUitOpen 2:cf42e62a97dc 93 #endif