ON Semiconductor / mbed-os

5.2.1 - Updated I2C files

Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

drivers/InterruptManager.cpp@1:f30bdcd2b33b, 2017-02-27 (annotated)

Committer:
jacobjohnson
Date:
Mon Feb 27 17:45:05 2017 +0000
Revision:
1:f30bdcd2b33b
Parent:
0:098463de4c5d 
changed the inputscale from 1 to 7 in analogin_api.c.  This will need to be changed later, and accessed from the main level, but for now this allows the  adc to read a value from 0 to 3.7V, instead of just up to 1V.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2013 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Licensed under the Apache License, Version 2.0 (the "License");
group-onsemi 0:098463de4c5d 5 * you may not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 6 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 9 *
group-onsemi 0:098463de4c5d 10 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 11 * distributed under the License is distributed on an "AS IS" BASIS,
group-onsemi 0:098463de4c5d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 13 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 14 * limitations under the License.
group-onsemi 0:098463de4c5d 15 */
group-onsemi 0:098463de4c5d 16 #include "cmsis.h"
group-onsemi 0:098463de4c5d 17 #if defined(NVIC_NUM_VECTORS)
group-onsemi 0:098463de4c5d 18
group-onsemi 0:098463de4c5d 19 #include "drivers/InterruptManager.h"
group-onsemi 0:098463de4c5d 20 #include "platform/critical.h"
group-onsemi 0:098463de4c5d 21 #include <string.h>
group-onsemi 0:098463de4c5d 22
group-onsemi 0:098463de4c5d 23 #define CHAIN_INITIAL_SIZE 4
group-onsemi 0:098463de4c5d 24
group-onsemi 0:098463de4c5d 25 namespace mbed {
group-onsemi 0:098463de4c5d 26
group-onsemi 0:098463de4c5d 27 typedef void (*pvoidf)(void);
group-onsemi 0:098463de4c5d 28
group-onsemi 0:098463de4c5d 29 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
group-onsemi 0:098463de4c5d 30
group-onsemi 0:098463de4c5d 31 InterruptManager* InterruptManager::get() {
group-onsemi 0:098463de4c5d 32
group-onsemi 0:098463de4c5d 33 if (NULL == _instance) {
group-onsemi 0:098463de4c5d 34 InterruptManager* temp = new InterruptManager();
group-onsemi 0:098463de4c5d 35
group-onsemi 0:098463de4c5d 36 // Atomically set _instance
group-onsemi 0:098463de4c5d 37 core_util_critical_section_enter();
group-onsemi 0:098463de4c5d 38 if (NULL == _instance) {
group-onsemi 0:098463de4c5d 39 _instance = temp;
group-onsemi 0:098463de4c5d 40 }
group-onsemi 0:098463de4c5d 41 core_util_critical_section_exit();
group-onsemi 0:098463de4c5d 42
group-onsemi 0:098463de4c5d 43 // Another thread got there first so delete ours
group-onsemi 0:098463de4c5d 44 if (temp != _instance) {
group-onsemi 0:098463de4c5d 45 delete temp;
group-onsemi 0:098463de4c5d 46 }
group-onsemi 0:098463de4c5d 47
group-onsemi 0:098463de4c5d 48 }
group-onsemi 0:098463de4c5d 49 return _instance;
group-onsemi 0:098463de4c5d 50 }
group-onsemi 0:098463de4c5d 51
group-onsemi 0:098463de4c5d 52 InterruptManager::InterruptManager() {
group-onsemi 0:098463de4c5d 53 // No mutex needed in constructor
group-onsemi 0:098463de4c5d 54 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
group-onsemi 0:098463de4c5d 55 }
group-onsemi 0:098463de4c5d 56
group-onsemi 0:098463de4c5d 57 void InterruptManager::destroy() {
group-onsemi 0:098463de4c5d 58 // Not a good idea to call this unless NO interrupt at all
group-onsemi 0:098463de4c5d 59 // is under the control of the handler; otherwise, a system crash
group-onsemi 0:098463de4c5d 60 // is very likely to occur
group-onsemi 0:098463de4c5d 61 if (NULL != _instance) {
group-onsemi 0:098463de4c5d 62 delete _instance;
group-onsemi 0:098463de4c5d 63 _instance = (InterruptManager*)NULL;
group-onsemi 0:098463de4c5d 64 }
group-onsemi 0:098463de4c5d 65 }
group-onsemi 0:098463de4c5d 66
group-onsemi 0:098463de4c5d 67 InterruptManager::~InterruptManager() {
group-onsemi 0:098463de4c5d 68 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
group-onsemi 0:098463de4c5d 69 if (NULL != _chains[i])
group-onsemi 0:098463de4c5d 70 delete _chains[i];
group-onsemi 0:098463de4c5d 71 }
group-onsemi 0:098463de4c5d 72
group-onsemi 0:098463de4c5d 73 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
group-onsemi 0:098463de4c5d 74 lock();
group-onsemi 0:098463de4c5d 75
group-onsemi 0:098463de4c5d 76 int ret = false;
group-onsemi 0:098463de4c5d 77 int irq_pos = get_irq_index(irq);
group-onsemi 0:098463de4c5d 78 if (NULL == _chains[irq_pos]) {
group-onsemi 0:098463de4c5d 79 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
group-onsemi 0:098463de4c5d 80 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
group-onsemi 0:098463de4c5d 81 ret = true;
group-onsemi 0:098463de4c5d 82 }
group-onsemi 0:098463de4c5d 83 unlock();
group-onsemi 0:098463de4c5d 84 return ret;
group-onsemi 0:098463de4c5d 85 }
group-onsemi 0:098463de4c5d 86
group-onsemi 0:098463de4c5d 87 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
group-onsemi 0:098463de4c5d 88 lock();
group-onsemi 0:098463de4c5d 89 int irq_pos = get_irq_index(irq);
group-onsemi 0:098463de4c5d 90 bool change = must_replace_vector(irq);
group-onsemi 0:098463de4c5d 91
group-onsemi 0:098463de4c5d 92 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
group-onsemi 0:098463de4c5d 93 if (change)
group-onsemi 0:098463de4c5d 94 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
group-onsemi 0:098463de4c5d 95 unlock();
group-onsemi 0:098463de4c5d 96 return pf;
group-onsemi 0:098463de4c5d 97 }
group-onsemi 0:098463de4c5d 98
group-onsemi 0:098463de4c5d 99 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
group-onsemi 0:098463de4c5d 100 int irq_pos = get_irq_index(irq);
group-onsemi 0:098463de4c5d 101 bool ret = false;
group-onsemi 0:098463de4c5d 102
group-onsemi 0:098463de4c5d 103 lock();
group-onsemi 0:098463de4c5d 104 if (_chains[irq_pos] != NULL) {
group-onsemi 0:098463de4c5d 105 if (_chains[irq_pos]->remove(handler)) {
group-onsemi 0:098463de4c5d 106 ret = true;
group-onsemi 0:098463de4c5d 107 }
group-onsemi 0:098463de4c5d 108 }
group-onsemi 0:098463de4c5d 109 unlock();
group-onsemi 0:098463de4c5d 110
group-onsemi 0:098463de4c5d 111 return ret;
group-onsemi 0:098463de4c5d 112 }
group-onsemi 0:098463de4c5d 113
group-onsemi 0:098463de4c5d 114 void InterruptManager::irq_helper() {
group-onsemi 0:098463de4c5d 115 _chains[__get_IPSR()]->call();
group-onsemi 0:098463de4c5d 116 }
group-onsemi 0:098463de4c5d 117
group-onsemi 0:098463de4c5d 118 int InterruptManager::get_irq_index(IRQn_Type irq) {
group-onsemi 0:098463de4c5d 119 // Pure function - no lock needed
group-onsemi 0:098463de4c5d 120 return (int)irq + NVIC_USER_IRQ_OFFSET;
group-onsemi 0:098463de4c5d 121 }
group-onsemi 0:098463de4c5d 122
group-onsemi 0:098463de4c5d 123 void InterruptManager::static_irq_helper() {
group-onsemi 0:098463de4c5d 124 InterruptManager::get()->irq_helper();
group-onsemi 0:098463de4c5d 125 }
group-onsemi 0:098463de4c5d 126
group-onsemi 0:098463de4c5d 127 void InterruptManager::lock() {
group-onsemi 0:098463de4c5d 128 _mutex.lock();
group-onsemi 0:098463de4c5d 129 }
group-onsemi 0:098463de4c5d 130
group-onsemi 0:098463de4c5d 131 void InterruptManager::unlock() {
group-onsemi 0:098463de4c5d 132 _mutex.unlock();
group-onsemi 0:098463de4c5d 133 }
group-onsemi 0:098463de4c5d 134
group-onsemi 0:098463de4c5d 135 } // namespace mbed
group-onsemi 0:098463de4c5d 136
group-onsemi 0:098463de4c5d 137 #endif