Jonne Valola / PokittoLib Featured

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   YATTT sd_map_test cPong SnowDemo ... more

PokittoLib

Library for programming Pokitto hardware

How to Use

  1. Import this library to online compiler (see button "import" on the right hand side
  2. DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
  3. Change My_settings.h according to your project
  4. Start coding!

mbed-pokitto/common/InterruptManager.cpp@71:531419862202, 2019-12-25 (annotated)

Committer:
Pokitto
Date:
Wed Dec 25 23:59:52 2019 +0000
Revision:
71:531419862202
Parent:
5:ea7377f3d1af 
Changed Mode2 C++ refresh code (graphical errors)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 5:ea7377f3d1af 1 #include "cmsis.h"
Pokitto 5:ea7377f3d1af 2 #if defined(NVIC_NUM_VECTORS)
Pokitto 5:ea7377f3d1af 3
Pokitto 5:ea7377f3d1af 4 #include "InterruptManager.h"
Pokitto 5:ea7377f3d1af 5 #include <string.h>
Pokitto 5:ea7377f3d1af 6
Pokitto 5:ea7377f3d1af 7 #define CHAIN_INITIAL_SIZE 4
Pokitto 5:ea7377f3d1af 8
Pokitto 5:ea7377f3d1af 9 namespace mbed {
Pokitto 5:ea7377f3d1af 10
Pokitto 5:ea7377f3d1af 11 typedef void (*pvoidf)(void);
Pokitto 5:ea7377f3d1af 12
Pokitto 5:ea7377f3d1af 13 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
Pokitto 5:ea7377f3d1af 14
Pokitto 5:ea7377f3d1af 15 InterruptManager* InterruptManager::get() {
Pokitto 5:ea7377f3d1af 16 if (NULL == _instance)
Pokitto 5:ea7377f3d1af 17 _instance = new InterruptManager();
Pokitto 5:ea7377f3d1af 18 return _instance;
Pokitto 5:ea7377f3d1af 19 }
Pokitto 5:ea7377f3d1af 20
Pokitto 5:ea7377f3d1af 21 InterruptManager::InterruptManager() {
Pokitto 5:ea7377f3d1af 22 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
Pokitto 5:ea7377f3d1af 23 }
Pokitto 5:ea7377f3d1af 24
Pokitto 5:ea7377f3d1af 25 void InterruptManager::destroy() {
Pokitto 5:ea7377f3d1af 26 // Not a good idea to call this unless NO interrupt at all
Pokitto 5:ea7377f3d1af 27 // is under the control of the handler; otherwise, a system crash
Pokitto 5:ea7377f3d1af 28 // is very likely to occur
Pokitto 5:ea7377f3d1af 29 if (NULL != _instance) {
Pokitto 5:ea7377f3d1af 30 delete _instance;
Pokitto 5:ea7377f3d1af 31 _instance = (InterruptManager*)NULL;
Pokitto 5:ea7377f3d1af 32 }
Pokitto 5:ea7377f3d1af 33 }
Pokitto 5:ea7377f3d1af 34
Pokitto 5:ea7377f3d1af 35 InterruptManager::~InterruptManager() {
Pokitto 5:ea7377f3d1af 36 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
Pokitto 5:ea7377f3d1af 37 if (NULL != _chains[i])
Pokitto 5:ea7377f3d1af 38 delete _chains[i];
Pokitto 5:ea7377f3d1af 39 }
Pokitto 5:ea7377f3d1af 40
Pokitto 5:ea7377f3d1af 41 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
Pokitto 5:ea7377f3d1af 42 int irq_pos = get_irq_index(irq);
Pokitto 5:ea7377f3d1af 43
Pokitto 5:ea7377f3d1af 44 if (NULL == _chains[irq_pos]) {
Pokitto 5:ea7377f3d1af 45 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
Pokitto 5:ea7377f3d1af 46 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
Pokitto 5:ea7377f3d1af 47 return true;
Pokitto 5:ea7377f3d1af 48 }
Pokitto 5:ea7377f3d1af 49 return false;
Pokitto 5:ea7377f3d1af 50 }
Pokitto 5:ea7377f3d1af 51
Pokitto 5:ea7377f3d1af 52 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
Pokitto 5:ea7377f3d1af 53 int irq_pos = get_irq_index(irq);
Pokitto 5:ea7377f3d1af 54 bool change = must_replace_vector(irq);
Pokitto 5:ea7377f3d1af 55
Pokitto 5:ea7377f3d1af 56 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
Pokitto 5:ea7377f3d1af 57 if (change)
Pokitto 5:ea7377f3d1af 58 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
Pokitto 5:ea7377f3d1af 59 return pf;
Pokitto 5:ea7377f3d1af 60 }
Pokitto 5:ea7377f3d1af 61
Pokitto 5:ea7377f3d1af 62 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
Pokitto 5:ea7377f3d1af 63 int irq_pos = get_irq_index(irq);
Pokitto 5:ea7377f3d1af 64
Pokitto 5:ea7377f3d1af 65 if (NULL == _chains[irq_pos])
Pokitto 5:ea7377f3d1af 66 return false;
Pokitto 5:ea7377f3d1af 67 if (!_chains[irq_pos]->remove(handler))
Pokitto 5:ea7377f3d1af 68 return false;
Pokitto 5:ea7377f3d1af 69 // If there's a single function left in the chain, swith the interrupt vector
Pokitto 5:ea7377f3d1af 70 // to call that function directly. This way we save both time and space.
Pokitto 5:ea7377f3d1af 71 if (_chains[irq_pos]->size() == 1 && NULL != _chains[irq_pos]->get(0)->get_function()) {
Pokitto 5:ea7377f3d1af 72 NVIC_SetVector(irq, (uint32_t)_chains[irq_pos]->get(0)->get_function());
Pokitto 5:ea7377f3d1af 73 delete _chains[irq_pos];
Pokitto 5:ea7377f3d1af 74 _chains[irq_pos] = (CallChain*) NULL;
Pokitto 5:ea7377f3d1af 75 }
Pokitto 5:ea7377f3d1af 76 return true;
Pokitto 5:ea7377f3d1af 77 }
Pokitto 5:ea7377f3d1af 78
Pokitto 5:ea7377f3d1af 79 void InterruptManager::irq_helper() {
Pokitto 5:ea7377f3d1af 80 _chains[__get_IPSR()]->call();
Pokitto 5:ea7377f3d1af 81 }
Pokitto 5:ea7377f3d1af 82
Pokitto 5:ea7377f3d1af 83 int InterruptManager::get_irq_index(IRQn_Type irq) {
Pokitto 5:ea7377f3d1af 84 return (int)irq + NVIC_USER_IRQ_OFFSET;
Pokitto 5:ea7377f3d1af 85 }
Pokitto 5:ea7377f3d1af 86
Pokitto 5:ea7377f3d1af 87 void InterruptManager::static_irq_helper() {
Pokitto 5:ea7377f3d1af 88 InterruptManager::get()->irq_helper();
Pokitto 5:ea7377f3d1af 89 }
Pokitto 5:ea7377f3d1af 90
Pokitto 5:ea7377f3d1af 91 } // namespace mbed
Pokitto 5:ea7377f3d1af 92
Pokitto 5:ea7377f3d1af 93 #endif