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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

cpp/InterruptIn.cpp@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #include "InterruptIn.h"
mbed_official 0:fd0d7bdfcdc2 23
mbed_official 0:fd0d7bdfcdc2 24 #if DEVICE_INTERRUPTIN
mbed_official 0:fd0d7bdfcdc2 25
mbed_official 0:fd0d7bdfcdc2 26 #include "error.h"
mbed_official 0:fd0d7bdfcdc2 27
mbed_official 0:fd0d7bdfcdc2 28 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 29
mbed_official 0:fd0d7bdfcdc2 30 InterruptIn::InterruptIn(PinName pin) {
mbed_official 0:fd0d7bdfcdc2 31 if (gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this) != 0)
mbed_official 0:fd0d7bdfcdc2 32 error("[ERROR] InterruptIn init\n");
mbed_official 0:fd0d7bdfcdc2 33 gpio_init(&gpio, pin, PIN_INPUT);
mbed_official 0:fd0d7bdfcdc2 34 }
mbed_official 0:fd0d7bdfcdc2 35
mbed_official 0:fd0d7bdfcdc2 36 InterruptIn::~InterruptIn() {
mbed_official 0:fd0d7bdfcdc2 37 gpio_irq_free(&gpio_irq);
mbed_official 0:fd0d7bdfcdc2 38 }
mbed_official 0:fd0d7bdfcdc2 39
mbed_official 0:fd0d7bdfcdc2 40 int InterruptIn::read() {
mbed_official 0:fd0d7bdfcdc2 41 return gpio_read(&gpio);
mbed_official 0:fd0d7bdfcdc2 42 }
mbed_official 0:fd0d7bdfcdc2 43
mbed_official 0:fd0d7bdfcdc2 44 void InterruptIn::mode(PinMode pull) {
mbed_official 0:fd0d7bdfcdc2 45 gpio_mode(&gpio, pull);
mbed_official 0:fd0d7bdfcdc2 46 }
mbed_official 0:fd0d7bdfcdc2 47
mbed_official 0:fd0d7bdfcdc2 48 void InterruptIn::rise(void (*fptr)(void)) {
mbed_official 0:fd0d7bdfcdc2 49 if (fptr) {
mbed_official 0:fd0d7bdfcdc2 50 _rise.attach(fptr);
mbed_official 0:fd0d7bdfcdc2 51 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
mbed_official 0:fd0d7bdfcdc2 52 } else {
mbed_official 0:fd0d7bdfcdc2 53 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
mbed_official 0:fd0d7bdfcdc2 54 }
mbed_official 0:fd0d7bdfcdc2 55 }
mbed_official 0:fd0d7bdfcdc2 56
mbed_official 0:fd0d7bdfcdc2 57 void InterruptIn::fall(void (*fptr)(void)) {
mbed_official 0:fd0d7bdfcdc2 58 if (fptr) {
mbed_official 0:fd0d7bdfcdc2 59 _fall.attach(fptr);
mbed_official 0:fd0d7bdfcdc2 60 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
mbed_official 0:fd0d7bdfcdc2 61 } else {
mbed_official 0:fd0d7bdfcdc2 62 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
mbed_official 0:fd0d7bdfcdc2 63 }
mbed_official 0:fd0d7bdfcdc2 64 }
mbed_official 0:fd0d7bdfcdc2 65
mbed_official 0:fd0d7bdfcdc2 66 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
mbed_official 0:fd0d7bdfcdc2 67 InterruptIn *handler = (InterruptIn*)id;
mbed_official 0:fd0d7bdfcdc2 68 switch (event) {
mbed_official 0:fd0d7bdfcdc2 69 case IRQ_RISE: handler->_rise.call(); break;
mbed_official 0:fd0d7bdfcdc2 70 case IRQ_FALL: handler->_fall.call(); break;
mbed_official 0:fd0d7bdfcdc2 71 case IRQ_NONE: break;
mbed_official 0:fd0d7bdfcdc2 72 }
mbed_official 0:fd0d7bdfcdc2 73 }
mbed_official 0:fd0d7bdfcdc2 74
mbed_official 0:fd0d7bdfcdc2 75 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 76 InterruptIn::operator int() {
mbed_official 0:fd0d7bdfcdc2 77 return read();
mbed_official 0:fd0d7bdfcdc2 78 }
mbed_official 0:fd0d7bdfcdc2 79 #endif
mbed_official 0:fd0d7bdfcdc2 80
mbed_official 0:fd0d7bdfcdc2 81 } // namespace mbed
mbed_official 0:fd0d7bdfcdc2 82
mbed_official 0:fd0d7bdfcdc2 83 #endif