Bei Chen Liu / mbed-src

mbed library sources

Fork of mbed-src by mbed official

common/InterruptIn.cpp@35:371630885ad6, 2013-10-21 (annotated)

Committer:
mbed_official
Date:
Mon Oct 21 11:45:04 2013 +0100
Revision:
35:371630885ad6
Parent:
15:4892fe388435
Child:
36:ab3ee77451e7
Synchronized with git revision 38eb79e9cce7811dee9a4d2b30c4bba468323393

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #include "InterruptIn.h"
bogdanm 13:0645d8841f51 17
bogdanm 13:0645d8841f51 18 #if DEVICE_INTERRUPTIN
bogdanm 13:0645d8841f51 19
bogdanm 13:0645d8841f51 20 namespace mbed {
bogdanm 13:0645d8841f51 21
bogdanm 13:0645d8841f51 22 InterruptIn::InterruptIn(PinName pin) {
bogdanm 13:0645d8841f51 23 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
bogdanm 13:0645d8841f51 24 gpio_init(&gpio, pin, PIN_INPUT);
bogdanm 13:0645d8841f51 25 }
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 InterruptIn::~InterruptIn() {
bogdanm 13:0645d8841f51 28 gpio_irq_free(&gpio_irq);
bogdanm 13:0645d8841f51 29 }
bogdanm 13:0645d8841f51 30
bogdanm 13:0645d8841f51 31 int InterruptIn::read() {
bogdanm 13:0645d8841f51 32 return gpio_read(&gpio);
bogdanm 13:0645d8841f51 33 }
bogdanm 13:0645d8841f51 34
bogdanm 13:0645d8841f51 35 void InterruptIn::mode(PinMode pull) {
bogdanm 13:0645d8841f51 36 gpio_mode(&gpio, pull);
bogdanm 13:0645d8841f51 37 }
bogdanm 13:0645d8841f51 38
bogdanm 15:4892fe388435 39 pFunctionPointer_t InterruptIn::rise(void (*fptr)(void)) {
bogdanm 15:4892fe388435 40 pFunctionPointer_t pf = NULL;
bogdanm 15:4892fe388435 41 _rise.clear();
bogdanm 13:0645d8841f51 42 if (fptr) {
bogdanm 15:4892fe388435 43 pf = _rise.add(fptr);
bogdanm 13:0645d8841f51 44 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
bogdanm 13:0645d8841f51 45 } else {
bogdanm 13:0645d8841f51 46 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
bogdanm 13:0645d8841f51 47 }
bogdanm 15:4892fe388435 48 return pf;
bogdanm 15:4892fe388435 49 }
bogdanm 15:4892fe388435 50
bogdanm 15:4892fe388435 51 pFunctionPointer_t InterruptIn::rise_add_common(void (*fptr)(void), bool front) {
bogdanm 15:4892fe388435 52 if (NULL == fptr)
bogdanm 15:4892fe388435 53 return NULL;
bogdanm 15:4892fe388435 54 pFunctionPointer_t pf = front ? _rise.add_front(fptr) : _rise.add(fptr);
bogdanm 15:4892fe388435 55 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
bogdanm 15:4892fe388435 56 return pf;
bogdanm 13:0645d8841f51 57 }
bogdanm 13:0645d8841f51 58
bogdanm 15:4892fe388435 59 bool InterruptIn::rise_remove(pFunctionPointer_t pf) {
bogdanm 15:4892fe388435 60 bool res = _rise.remove(pf);
bogdanm 15:4892fe388435 61 if (res && _rise.size() == 0)
bogdanm 15:4892fe388435 62 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
bogdanm 15:4892fe388435 63 return res;
bogdanm 15:4892fe388435 64 }
bogdanm 15:4892fe388435 65
bogdanm 15:4892fe388435 66 pFunctionPointer_t InterruptIn::fall(void (*fptr)(void)) {
bogdanm 15:4892fe388435 67 pFunctionPointer_t pf = NULL;
bogdanm 15:4892fe388435 68 _fall.clear();
bogdanm 13:0645d8841f51 69 if (fptr) {
bogdanm 15:4892fe388435 70 pf = _fall.add(fptr);
bogdanm 13:0645d8841f51 71 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
bogdanm 13:0645d8841f51 72 } else {
bogdanm 13:0645d8841f51 73 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
bogdanm 13:0645d8841f51 74 }
bogdanm 15:4892fe388435 75 return pf;
bogdanm 15:4892fe388435 76 }
bogdanm 15:4892fe388435 77
bogdanm 15:4892fe388435 78 pFunctionPointer_t InterruptIn::fall_add_common(void (*fptr)(void), bool front) {
bogdanm 15:4892fe388435 79 if (NULL == fptr)
bogdanm 15:4892fe388435 80 return NULL;
bogdanm 15:4892fe388435 81 pFunctionPointer_t pf = front ? _fall.add_front(fptr) : _fall.add(fptr);
bogdanm 15:4892fe388435 82 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
bogdanm 15:4892fe388435 83 return pf;
bogdanm 15:4892fe388435 84 }
bogdanm 15:4892fe388435 85
bogdanm 15:4892fe388435 86 bool InterruptIn::fall_remove(pFunctionPointer_t pf) {
bogdanm 15:4892fe388435 87 bool res = _fall.remove(pf);
bogdanm 15:4892fe388435 88 if (res && _fall.size() == 0)
bogdanm 15:4892fe388435 89 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
bogdanm 15:4892fe388435 90 return res;
bogdanm 13:0645d8841f51 91 }
bogdanm 13:0645d8841f51 92
bogdanm 13:0645d8841f51 93 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
bogdanm 13:0645d8841f51 94 InterruptIn *handler = (InterruptIn*)id;
bogdanm 13:0645d8841f51 95 switch (event) {
bogdanm 13:0645d8841f51 96 case IRQ_RISE: handler->_rise.call(); break;
bogdanm 13:0645d8841f51 97 case IRQ_FALL: handler->_fall.call(); break;
bogdanm 13:0645d8841f51 98 case IRQ_NONE: break;
bogdanm 13:0645d8841f51 99 }
bogdanm 13:0645d8841f51 100 }
bogdanm 13:0645d8841f51 101
mbed_official 35:371630885ad6 102 void InterruptIn::enable_irq() {
mbed_official 35:371630885ad6 103 gpio_irq_enable(&gpio_irq);
mbed_official 35:371630885ad6 104 }
mbed_official 35:371630885ad6 105
mbed_official 35:371630885ad6 106 void InterruptIn::disable_irq() {
mbed_official 35:371630885ad6 107 gpio_irq_disable(&gpio_irq);
mbed_official 35:371630885ad6 108 }
mbed_official 35:371630885ad6 109
bogdanm 13:0645d8841f51 110 #ifdef MBED_OPERATORS
bogdanm 13:0645d8841f51 111 InterruptIn::operator int() {
bogdanm 13:0645d8841f51 112 return read();
bogdanm 13:0645d8841f51 113 }
bogdanm 13:0645d8841f51 114 #endif
bogdanm 13:0645d8841f51 115
bogdanm 13:0645d8841f51 116 } // namespace mbed
bogdanm 13:0645d8841f51 117
bogdanm 13:0645d8841f51 118 #endif