Pokitto Community Team / Pokitto_

PokittoLib with changes to lcd refresh etc.

Dependents:   Pokittris

Fork of Pokitto by Pokitto Community Team

This is a fork by user @Spinal, and is used in Pokittris for testing. Do not import this to your own program.

mbed-pokitto/common/InterruptManager.cpp@11:02ad9c807a21, 2017-10-15 (annotated)

Committer:
spinal
Date:
Sun Oct 15 18:03:02 2017 +0000
Revision:
11:02ad9c807a21
Parent:
5:7e5c566b1760 
fixed 4color refreshRegion code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 5:7e5c566b1760 1 #include "cmsis.h"
Pokitto 5:7e5c566b1760 2 #if defined(NVIC_NUM_VECTORS)
Pokitto 5:7e5c566b1760 3
Pokitto 5:7e5c566b1760 4 #include "InterruptManager.h"
Pokitto 5:7e5c566b1760 5 #include <string.h>
Pokitto 5:7e5c566b1760 6
Pokitto 5:7e5c566b1760 7 #define CHAIN_INITIAL_SIZE 4
Pokitto 5:7e5c566b1760 8
Pokitto 5:7e5c566b1760 9 namespace mbed {
Pokitto 5:7e5c566b1760 10
Pokitto 5:7e5c566b1760 11 typedef void (*pvoidf)(void);
Pokitto 5:7e5c566b1760 12
Pokitto 5:7e5c566b1760 13 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
Pokitto 5:7e5c566b1760 14
Pokitto 5:7e5c566b1760 15 InterruptManager* InterruptManager::get() {
Pokitto 5:7e5c566b1760 16 if (NULL == _instance)
Pokitto 5:7e5c566b1760 17 _instance = new InterruptManager();
Pokitto 5:7e5c566b1760 18 return _instance;
Pokitto 5:7e5c566b1760 19 }
Pokitto 5:7e5c566b1760 20
Pokitto 5:7e5c566b1760 21 InterruptManager::InterruptManager() {
Pokitto 5:7e5c566b1760 22 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
Pokitto 5:7e5c566b1760 23 }
Pokitto 5:7e5c566b1760 24
Pokitto 5:7e5c566b1760 25 void InterruptManager::destroy() {
Pokitto 5:7e5c566b1760 26 // Not a good idea to call this unless NO interrupt at all
Pokitto 5:7e5c566b1760 27 // is under the control of the handler; otherwise, a system crash
Pokitto 5:7e5c566b1760 28 // is very likely to occur
Pokitto 5:7e5c566b1760 29 if (NULL != _instance) {
Pokitto 5:7e5c566b1760 30 delete _instance;
Pokitto 5:7e5c566b1760 31 _instance = (InterruptManager*)NULL;
Pokitto 5:7e5c566b1760 32 }
Pokitto 5:7e5c566b1760 33 }
Pokitto 5:7e5c566b1760 34
Pokitto 5:7e5c566b1760 35 InterruptManager::~InterruptManager() {
Pokitto 5:7e5c566b1760 36 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
Pokitto 5:7e5c566b1760 37 if (NULL != _chains[i])
Pokitto 5:7e5c566b1760 38 delete _chains[i];
Pokitto 5:7e5c566b1760 39 }
Pokitto 5:7e5c566b1760 40
Pokitto 5:7e5c566b1760 41 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
Pokitto 5:7e5c566b1760 42 int irq_pos = get_irq_index(irq);
Pokitto 5:7e5c566b1760 43
Pokitto 5:7e5c566b1760 44 if (NULL == _chains[irq_pos]) {
Pokitto 5:7e5c566b1760 45 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
Pokitto 5:7e5c566b1760 46 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
Pokitto 5:7e5c566b1760 47 return true;
Pokitto 5:7e5c566b1760 48 }
Pokitto 5:7e5c566b1760 49 return false;
Pokitto 5:7e5c566b1760 50 }
Pokitto 5:7e5c566b1760 51
Pokitto 5:7e5c566b1760 52 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
Pokitto 5:7e5c566b1760 53 int irq_pos = get_irq_index(irq);
Pokitto 5:7e5c566b1760 54 bool change = must_replace_vector(irq);
Pokitto 5:7e5c566b1760 55
Pokitto 5:7e5c566b1760 56 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
Pokitto 5:7e5c566b1760 57 if (change)
Pokitto 5:7e5c566b1760 58 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
Pokitto 5:7e5c566b1760 59 return pf;
Pokitto 5:7e5c566b1760 60 }
Pokitto 5:7e5c566b1760 61
Pokitto 5:7e5c566b1760 62 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
Pokitto 5:7e5c566b1760 63 int irq_pos = get_irq_index(irq);
Pokitto 5:7e5c566b1760 64
Pokitto 5:7e5c566b1760 65 if (NULL == _chains[irq_pos])
Pokitto 5:7e5c566b1760 66 return false;
Pokitto 5:7e5c566b1760 67 if (!_chains[irq_pos]->remove(handler))
Pokitto 5:7e5c566b1760 68 return false;
Pokitto 5:7e5c566b1760 69 // If there's a single function left in the chain, swith the interrupt vector
Pokitto 5:7e5c566b1760 70 // to call that function directly. This way we save both time and space.
Pokitto 5:7e5c566b1760 71 if (_chains[irq_pos]->size() == 1 && NULL != _chains[irq_pos]->get(0)->get_function()) {
Pokitto 5:7e5c566b1760 72 NVIC_SetVector(irq, (uint32_t)_chains[irq_pos]->get(0)->get_function());
Pokitto 5:7e5c566b1760 73 delete _chains[irq_pos];
Pokitto 5:7e5c566b1760 74 _chains[irq_pos] = (CallChain*) NULL;
Pokitto 5:7e5c566b1760 75 }
Pokitto 5:7e5c566b1760 76 return true;
Pokitto 5:7e5c566b1760 77 }
Pokitto 5:7e5c566b1760 78
Pokitto 5:7e5c566b1760 79 void InterruptManager::irq_helper() {
Pokitto 5:7e5c566b1760 80 _chains[__get_IPSR()]->call();
Pokitto 5:7e5c566b1760 81 }
Pokitto 5:7e5c566b1760 82
Pokitto 5:7e5c566b1760 83 int InterruptManager::get_irq_index(IRQn_Type irq) {
Pokitto 5:7e5c566b1760 84 return (int)irq + NVIC_USER_IRQ_OFFSET;
Pokitto 5:7e5c566b1760 85 }
Pokitto 5:7e5c566b1760 86
Pokitto 5:7e5c566b1760 87 void InterruptManager::static_irq_helper() {
Pokitto 5:7e5c566b1760 88 InterruptManager::get()->irq_helper();
Pokitto 5:7e5c566b1760 89 }
Pokitto 5:7e5c566b1760 90
Pokitto 5:7e5c566b1760 91 } // namespace mbed
Pokitto 5:7e5c566b1760 92
Pokitto 5:7e5c566b1760 93 #endif