Julien Cassette / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

common/InterruptIn.cpp@30:748c8b6e75b1, 2015-11-26 (annotated)

Committer:
mbed_official
Date:
Thu Nov 26 13:30:11 2015 +0000
Revision:
30:748c8b6e75b1
Parent:
0:9b334a45a8ff 
Synchronized with git revision 7fcda4012c43cb7904b7250986e326d5c007a32a



Full URL: https://github.com/mbedmicro/mbed/commit/7fcda4012c43cb7904b7250986e326d5c007a32a/



[FATFileSystem] Updated FatFs to R0.11a & fixed sync bug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "InterruptIn.h"
bogdanm 0:9b334a45a8ff 17
bogdanm 0:9b334a45a8ff 18 #if DEVICE_INTERRUPTIN
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 namespace mbed {
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 InterruptIn::InterruptIn(PinName pin) : gpio(),
bogdanm 0:9b334a45a8ff 23 gpio_irq(),
bogdanm 0:9b334a45a8ff 24 _rise(),
bogdanm 0:9b334a45a8ff 25 _fall() {
bogdanm 0:9b334a45a8ff 26 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
bogdanm 0:9b334a45a8ff 27 gpio_init_in(&gpio, pin);
bogdanm 0:9b334a45a8ff 28 }
bogdanm 0:9b334a45a8ff 29
bogdanm 0:9b334a45a8ff 30 InterruptIn::~InterruptIn() {
bogdanm 0:9b334a45a8ff 31 gpio_irq_free(&gpio_irq);
bogdanm 0:9b334a45a8ff 32 }
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 int InterruptIn::read() {
bogdanm 0:9b334a45a8ff 35 return gpio_read(&gpio);
bogdanm 0:9b334a45a8ff 36 }
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 void InterruptIn::mode(PinMode pull) {
bogdanm 0:9b334a45a8ff 39 gpio_mode(&gpio, pull);
bogdanm 0:9b334a45a8ff 40 }
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 void InterruptIn::rise(void (*fptr)(void)) {
bogdanm 0:9b334a45a8ff 43 if (fptr) {
bogdanm 0:9b334a45a8ff 44 _rise.attach(fptr);
bogdanm 0:9b334a45a8ff 45 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
bogdanm 0:9b334a45a8ff 46 } else {
mbed_official 30:748c8b6e75b1 47 _rise.attach(NULL);
bogdanm 0:9b334a45a8ff 48 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
bogdanm 0:9b334a45a8ff 49 }
bogdanm 0:9b334a45a8ff 50 }
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 void InterruptIn::fall(void (*fptr)(void)) {
bogdanm 0:9b334a45a8ff 53 if (fptr) {
bogdanm 0:9b334a45a8ff 54 _fall.attach(fptr);
bogdanm 0:9b334a45a8ff 55 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
bogdanm 0:9b334a45a8ff 56 } else {
mbed_official 30:748c8b6e75b1 57 _fall.attach(NULL);
bogdanm 0:9b334a45a8ff 58 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
bogdanm 0:9b334a45a8ff 59 }
bogdanm 0:9b334a45a8ff 60 }
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
bogdanm 0:9b334a45a8ff 63 InterruptIn *handler = (InterruptIn*)id;
bogdanm 0:9b334a45a8ff 64 switch (event) {
bogdanm 0:9b334a45a8ff 65 case IRQ_RISE: handler->_rise.call(); break;
bogdanm 0:9b334a45a8ff 66 case IRQ_FALL: handler->_fall.call(); break;
bogdanm 0:9b334a45a8ff 67 case IRQ_NONE: break;
bogdanm 0:9b334a45a8ff 68 }
bogdanm 0:9b334a45a8ff 69 }
bogdanm 0:9b334a45a8ff 70
bogdanm 0:9b334a45a8ff 71 void InterruptIn::enable_irq() {
bogdanm 0:9b334a45a8ff 72 gpio_irq_enable(&gpio_irq);
bogdanm 0:9b334a45a8ff 73 }
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 void InterruptIn::disable_irq() {
bogdanm 0:9b334a45a8ff 76 gpio_irq_disable(&gpio_irq);
bogdanm 0:9b334a45a8ff 77 }
bogdanm 0:9b334a45a8ff 78
bogdanm 0:9b334a45a8ff 79 #ifdef MBED_OPERATORS
bogdanm 0:9b334a45a8ff 80 InterruptIn::operator int() {
bogdanm 0:9b334a45a8ff 81 return read();
bogdanm 0:9b334a45a8ff 82 }
bogdanm 0:9b334a45a8ff 83 #endif
bogdanm 0:9b334a45a8ff 84
bogdanm 0:9b334a45a8ff 85 } // namespace mbed
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 #endif