Nathan Yonkee / Mbed 2 deprecated Nucleo_sinewave_output_copy

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Dependencies:   mbed

mbed-os/drivers/InterruptIn.cpp@9:d58e77ebd769, 2018-03-02 (annotated)

Committer:
Nathan Yonkee
Date:
Fri Mar 02 07:12:37 2018 -0700
Revision:
9:d58e77ebd769
add mbed-os library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Nathan Yonkee 9:d58e77ebd769 1 /* mbed Microcontroller Library
Nathan Yonkee 9:d58e77ebd769 2 * Copyright (c) 2006-2013 ARM Limited
Nathan Yonkee 9:d58e77ebd769 3 *
Nathan Yonkee 9:d58e77ebd769 4 * Licensed under the Apache License, Version 2.0 (the "License");
Nathan Yonkee 9:d58e77ebd769 5 * you may not use this file except in compliance with the License.
Nathan Yonkee 9:d58e77ebd769 6 * You may obtain a copy of the License at
Nathan Yonkee 9:d58e77ebd769 7 *
Nathan Yonkee 9:d58e77ebd769 8 * http://www.apache.org/licenses/LICENSE-2.0
Nathan Yonkee 9:d58e77ebd769 9 *
Nathan Yonkee 9:d58e77ebd769 10 * Unless required by applicable law or agreed to in writing, software
Nathan Yonkee 9:d58e77ebd769 11 * distributed under the License is distributed on an "AS IS" BASIS,
Nathan Yonkee 9:d58e77ebd769 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Nathan Yonkee 9:d58e77ebd769 13 * See the License for the specific language governing permissions and
Nathan Yonkee 9:d58e77ebd769 14 * limitations under the License.
Nathan Yonkee 9:d58e77ebd769 15 */
Nathan Yonkee 9:d58e77ebd769 16 #include "drivers/InterruptIn.h"
Nathan Yonkee 9:d58e77ebd769 17
Nathan Yonkee 9:d58e77ebd769 18 #if DEVICE_INTERRUPTIN
Nathan Yonkee 9:d58e77ebd769 19
Nathan Yonkee 9:d58e77ebd769 20 namespace mbed {
Nathan Yonkee 9:d58e77ebd769 21
Nathan Yonkee 9:d58e77ebd769 22 InterruptIn::InterruptIn(PinName pin) : gpio(),
Nathan Yonkee 9:d58e77ebd769 23 gpio_irq(),
Nathan Yonkee 9:d58e77ebd769 24 _rise(NULL),
Nathan Yonkee 9:d58e77ebd769 25 _fall(NULL) {
Nathan Yonkee 9:d58e77ebd769 26 // No lock needed in the constructor
Nathan Yonkee 9:d58e77ebd769 27
Nathan Yonkee 9:d58e77ebd769 28 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
Nathan Yonkee 9:d58e77ebd769 29 gpio_init_in(&gpio, pin);
Nathan Yonkee 9:d58e77ebd769 30 }
Nathan Yonkee 9:d58e77ebd769 31
Nathan Yonkee 9:d58e77ebd769 32 InterruptIn::~InterruptIn() {
Nathan Yonkee 9:d58e77ebd769 33 // No lock needed in the destructor
Nathan Yonkee 9:d58e77ebd769 34 gpio_irq_free(&gpio_irq);
Nathan Yonkee 9:d58e77ebd769 35 }
Nathan Yonkee 9:d58e77ebd769 36
Nathan Yonkee 9:d58e77ebd769 37 int InterruptIn::read() {
Nathan Yonkee 9:d58e77ebd769 38 // Read only
Nathan Yonkee 9:d58e77ebd769 39 return gpio_read(&gpio);
Nathan Yonkee 9:d58e77ebd769 40 }
Nathan Yonkee 9:d58e77ebd769 41
Nathan Yonkee 9:d58e77ebd769 42 void InterruptIn::mode(PinMode pull) {
Nathan Yonkee 9:d58e77ebd769 43 core_util_critical_section_enter();
Nathan Yonkee 9:d58e77ebd769 44 gpio_mode(&gpio, pull);
Nathan Yonkee 9:d58e77ebd769 45 core_util_critical_section_exit();
Nathan Yonkee 9:d58e77ebd769 46 }
Nathan Yonkee 9:d58e77ebd769 47
Nathan Yonkee 9:d58e77ebd769 48 void InterruptIn::rise(Callback<void()> func) {
Nathan Yonkee 9:d58e77ebd769 49 core_util_critical_section_enter();
Nathan Yonkee 9:d58e77ebd769 50 if (func) {
Nathan Yonkee 9:d58e77ebd769 51 _rise = func;
Nathan Yonkee 9:d58e77ebd769 52 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
Nathan Yonkee 9:d58e77ebd769 53 } else {
Nathan Yonkee 9:d58e77ebd769 54 _rise = NULL;
Nathan Yonkee 9:d58e77ebd769 55 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
Nathan Yonkee 9:d58e77ebd769 56 }
Nathan Yonkee 9:d58e77ebd769 57 core_util_critical_section_exit();
Nathan Yonkee 9:d58e77ebd769 58 }
Nathan Yonkee 9:d58e77ebd769 59
Nathan Yonkee 9:d58e77ebd769 60 void InterruptIn::fall(Callback<void()> func) {
Nathan Yonkee 9:d58e77ebd769 61 core_util_critical_section_enter();
Nathan Yonkee 9:d58e77ebd769 62 if (func) {
Nathan Yonkee 9:d58e77ebd769 63 _fall = func;
Nathan Yonkee 9:d58e77ebd769 64 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
Nathan Yonkee 9:d58e77ebd769 65 } else {
Nathan Yonkee 9:d58e77ebd769 66 _fall = NULL;
Nathan Yonkee 9:d58e77ebd769 67 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
Nathan Yonkee 9:d58e77ebd769 68 }
Nathan Yonkee 9:d58e77ebd769 69 core_util_critical_section_exit();
Nathan Yonkee 9:d58e77ebd769 70 }
Nathan Yonkee 9:d58e77ebd769 71
Nathan Yonkee 9:d58e77ebd769 72 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
Nathan Yonkee 9:d58e77ebd769 73 InterruptIn *handler = (InterruptIn*)id;
Nathan Yonkee 9:d58e77ebd769 74 switch (event) {
Nathan Yonkee 9:d58e77ebd769 75 case IRQ_RISE:
Nathan Yonkee 9:d58e77ebd769 76 if (handler->_rise) {
Nathan Yonkee 9:d58e77ebd769 77 handler->_rise();
Nathan Yonkee 9:d58e77ebd769 78 }
Nathan Yonkee 9:d58e77ebd769 79 break;
Nathan Yonkee 9:d58e77ebd769 80 case IRQ_FALL:
Nathan Yonkee 9:d58e77ebd769 81 if (handler->_fall) {
Nathan Yonkee 9:d58e77ebd769 82 handler->_fall();
Nathan Yonkee 9:d58e77ebd769 83 }
Nathan Yonkee 9:d58e77ebd769 84 break;
Nathan Yonkee 9:d58e77ebd769 85 case IRQ_NONE: break;
Nathan Yonkee 9:d58e77ebd769 86 }
Nathan Yonkee 9:d58e77ebd769 87 }
Nathan Yonkee 9:d58e77ebd769 88
Nathan Yonkee 9:d58e77ebd769 89 void InterruptIn::enable_irq() {
Nathan Yonkee 9:d58e77ebd769 90 core_util_critical_section_enter();
Nathan Yonkee 9:d58e77ebd769 91 gpio_irq_enable(&gpio_irq);
Nathan Yonkee 9:d58e77ebd769 92 core_util_critical_section_exit();
Nathan Yonkee 9:d58e77ebd769 93 }
Nathan Yonkee 9:d58e77ebd769 94
Nathan Yonkee 9:d58e77ebd769 95 void InterruptIn::disable_irq() {
Nathan Yonkee 9:d58e77ebd769 96 core_util_critical_section_enter();
Nathan Yonkee 9:d58e77ebd769 97 gpio_irq_disable(&gpio_irq);
Nathan Yonkee 9:d58e77ebd769 98 core_util_critical_section_exit();
Nathan Yonkee 9:d58e77ebd769 99 }
Nathan Yonkee 9:d58e77ebd769 100
Nathan Yonkee 9:d58e77ebd769 101 InterruptIn::operator int() {
Nathan Yonkee 9:d58e77ebd769 102 // Underlying call is atomic
Nathan Yonkee 9:d58e77ebd769 103 return read();
Nathan Yonkee 9:d58e77ebd769 104 }
Nathan Yonkee 9:d58e77ebd769 105
Nathan Yonkee 9:d58e77ebd769 106 } // namespace mbed
Nathan Yonkee 9:d58e77ebd769 107
Nathan Yonkee 9:d58e77ebd769 108 #endif