mbed library sources
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common/InterruptIn.cpp@636:de8f3520e5c1, 2016-12-21 (annotated)
- Committer:
- fwndz
- Date:
- Wed Dec 21 12:47:52 2016 +0000
- Revision:
- 636:de8f3520e5c1
- Parent:
- 212:34d62c0b2af6
init
Who changed what in which revision?
User | Revision | Line number | New 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 | |
mbed_official | 212:34d62c0b2af6 | 22 | InterruptIn::InterruptIn(PinName pin) : gpio(), |
mbed_official | 212:34d62c0b2af6 | 23 | gpio_irq(), |
mbed_official | 212:34d62c0b2af6 | 24 | _rise(), |
mbed_official | 212:34d62c0b2af6 | 25 | _fall() { |
bogdanm | 13:0645d8841f51 | 26 | gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this); |
mbed_official | 113:65a335a675de | 27 | gpio_init_in(&gpio, pin); |
bogdanm | 13:0645d8841f51 | 28 | } |
bogdanm | 13:0645d8841f51 | 29 | |
bogdanm | 13:0645d8841f51 | 30 | InterruptIn::~InterruptIn() { |
bogdanm | 13:0645d8841f51 | 31 | gpio_irq_free(&gpio_irq); |
bogdanm | 13:0645d8841f51 | 32 | } |
bogdanm | 13:0645d8841f51 | 33 | |
bogdanm | 13:0645d8841f51 | 34 | int InterruptIn::read() { |
bogdanm | 13:0645d8841f51 | 35 | return gpio_read(&gpio); |
bogdanm | 13:0645d8841f51 | 36 | } |
bogdanm | 13:0645d8841f51 | 37 | |
bogdanm | 13:0645d8841f51 | 38 | void InterruptIn::mode(PinMode pull) { |
bogdanm | 13:0645d8841f51 | 39 | gpio_mode(&gpio, pull); |
bogdanm | 13:0645d8841f51 | 40 | } |
bogdanm | 13:0645d8841f51 | 41 | |
mbed_official | 36:ab3ee77451e7 | 42 | void InterruptIn::rise(void (*fptr)(void)) { |
bogdanm | 13:0645d8841f51 | 43 | if (fptr) { |
mbed_official | 36:ab3ee77451e7 | 44 | _rise.attach(fptr); |
bogdanm | 13:0645d8841f51 | 45 | gpio_irq_set(&gpio_irq, IRQ_RISE, 1); |
bogdanm | 13:0645d8841f51 | 46 | } else { |
bogdanm | 13:0645d8841f51 | 47 | gpio_irq_set(&gpio_irq, IRQ_RISE, 0); |
bogdanm | 13:0645d8841f51 | 48 | } |
bogdanm | 13:0645d8841f51 | 49 | } |
bogdanm | 13:0645d8841f51 | 50 | |
mbed_official | 36:ab3ee77451e7 | 51 | void InterruptIn::fall(void (*fptr)(void)) { |
bogdanm | 13:0645d8841f51 | 52 | if (fptr) { |
mbed_official | 36:ab3ee77451e7 | 53 | _fall.attach(fptr); |
bogdanm | 13:0645d8841f51 | 54 | gpio_irq_set(&gpio_irq, IRQ_FALL, 1); |
bogdanm | 13:0645d8841f51 | 55 | } else { |
bogdanm | 13:0645d8841f51 | 56 | gpio_irq_set(&gpio_irq, IRQ_FALL, 0); |
bogdanm | 13:0645d8841f51 | 57 | } |
bogdanm | 13:0645d8841f51 | 58 | } |
bogdanm | 13:0645d8841f51 | 59 | |
bogdanm | 13:0645d8841f51 | 60 | void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) { |
bogdanm | 13:0645d8841f51 | 61 | InterruptIn *handler = (InterruptIn*)id; |
bogdanm | 13:0645d8841f51 | 62 | switch (event) { |
bogdanm | 13:0645d8841f51 | 63 | case IRQ_RISE: handler->_rise.call(); break; |
bogdanm | 13:0645d8841f51 | 64 | case IRQ_FALL: handler->_fall.call(); break; |
bogdanm | 13:0645d8841f51 | 65 | case IRQ_NONE: break; |
bogdanm | 13:0645d8841f51 | 66 | } |
bogdanm | 13:0645d8841f51 | 67 | } |
bogdanm | 13:0645d8841f51 | 68 | |
mbed_official | 35:371630885ad6 | 69 | void InterruptIn::enable_irq() { |
mbed_official | 35:371630885ad6 | 70 | gpio_irq_enable(&gpio_irq); |
mbed_official | 35:371630885ad6 | 71 | } |
mbed_official | 35:371630885ad6 | 72 | |
mbed_official | 35:371630885ad6 | 73 | void InterruptIn::disable_irq() { |
mbed_official | 35:371630885ad6 | 74 | gpio_irq_disable(&gpio_irq); |
mbed_official | 35:371630885ad6 | 75 | } |
mbed_official | 35:371630885ad6 | 76 | |
bogdanm | 13:0645d8841f51 | 77 | #ifdef MBED_OPERATORS |
bogdanm | 13:0645d8841f51 | 78 | InterruptIn::operator int() { |
bogdanm | 13:0645d8841f51 | 79 | return read(); |
bogdanm | 13:0645d8841f51 | 80 | } |
bogdanm | 13:0645d8841f51 | 81 | #endif |
bogdanm | 13:0645d8841f51 | 82 | |
bogdanm | 13:0645d8841f51 | 83 | } // namespace mbed |
bogdanm | 13:0645d8841f51 | 84 | |
bogdanm | 13:0645d8841f51 | 85 | #endif |