Kenji Arai / mbed-os_TYBLE16

mbed-os5 only for TYBLE16

Dependents:   TYBLE16_simple_data_logger TYBLE16_MP3_Air

drivers/source/InterruptIn.cpp@1:9db0e321a9f4, 2019-12-31 (annotated)

Committer:
kenjiArai
Date:
Tue Dec 31 06:02:27 2019 +0000
Revision:
1:9db0e321a9f4
Parent:
drivers/InterruptIn.cpp@0:5b88d5760320 
updated based on mbed-os5.15.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 0:5b88d5760320 1 /* mbed Microcontroller Library
kenjiArai 0:5b88d5760320 2 * Copyright (c) 2006-2013 ARM Limited
kenjiArai 0:5b88d5760320 3 * SPDX-License-Identifier: Apache-2.0
kenjiArai 0:5b88d5760320 4 *
kenjiArai 0:5b88d5760320 5 * Licensed under the Apache License, Version 2.0 (the "License");
kenjiArai 0:5b88d5760320 6 * you may not use this file except in compliance with the License.
kenjiArai 0:5b88d5760320 7 * You may obtain a copy of the License at
kenjiArai 0:5b88d5760320 8 *
kenjiArai 0:5b88d5760320 9 * http://www.apache.org/licenses/LICENSE-2.0
kenjiArai 0:5b88d5760320 10 *
kenjiArai 0:5b88d5760320 11 * Unless required by applicable law or agreed to in writing, software
kenjiArai 0:5b88d5760320 12 * distributed under the License is distributed on an "AS IS" BASIS,
kenjiArai 0:5b88d5760320 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kenjiArai 0:5b88d5760320 14 * See the License for the specific language governing permissions and
kenjiArai 0:5b88d5760320 15 * limitations under the License.
kenjiArai 0:5b88d5760320 16 */
kenjiArai 0:5b88d5760320 17 #include "drivers/InterruptIn.h"
kenjiArai 0:5b88d5760320 18
kenjiArai 0:5b88d5760320 19 #if DEVICE_INTERRUPTIN
kenjiArai 0:5b88d5760320 20
kenjiArai 0:5b88d5760320 21 namespace mbed {
kenjiArai 0:5b88d5760320 22
kenjiArai 0:5b88d5760320 23 // Note: This single-parameter constructor exists to maintain binary
kenjiArai 0:5b88d5760320 24 // compatibility.
kenjiArai 0:5b88d5760320 25 // If not for that, we could simplify by having only the 2-param
kenjiArai 0:5b88d5760320 26 // constructor, with a default value for the PinMode.
kenjiArai 0:5b88d5760320 27 InterruptIn::InterruptIn(PinName pin) : gpio(),
kenjiArai 0:5b88d5760320 28 gpio_irq(),
kenjiArai 0:5b88d5760320 29 _rise(NULL),
kenjiArai 0:5b88d5760320 30 _fall(NULL)
kenjiArai 0:5b88d5760320 31 {
kenjiArai 0:5b88d5760320 32 // No lock needed in the constructor
kenjiArai 0:5b88d5760320 33 irq_init(pin);
kenjiArai 0:5b88d5760320 34 gpio_init_in(&gpio, pin);
kenjiArai 0:5b88d5760320 35 }
kenjiArai 0:5b88d5760320 36
kenjiArai 0:5b88d5760320 37 InterruptIn::InterruptIn(PinName pin, PinMode mode) :
kenjiArai 0:5b88d5760320 38 gpio(),
kenjiArai 0:5b88d5760320 39 gpio_irq(),
kenjiArai 0:5b88d5760320 40 _rise(NULL),
kenjiArai 0:5b88d5760320 41 _fall(NULL)
kenjiArai 0:5b88d5760320 42 {
kenjiArai 0:5b88d5760320 43 // No lock needed in the constructor
kenjiArai 0:5b88d5760320 44 irq_init(pin);
kenjiArai 0:5b88d5760320 45 gpio_init_in_ex(&gpio, pin, mode);
kenjiArai 0:5b88d5760320 46 }
kenjiArai 0:5b88d5760320 47
kenjiArai 0:5b88d5760320 48 void InterruptIn::irq_init(PinName pin)
kenjiArai 0:5b88d5760320 49 {
kenjiArai 0:5b88d5760320 50 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
kenjiArai 0:5b88d5760320 51 }
kenjiArai 0:5b88d5760320 52
kenjiArai 0:5b88d5760320 53 InterruptIn::~InterruptIn()
kenjiArai 0:5b88d5760320 54 {
kenjiArai 0:5b88d5760320 55 // No lock needed in the destructor
kenjiArai 0:5b88d5760320 56 gpio_irq_free(&gpio_irq);
kenjiArai 0:5b88d5760320 57 }
kenjiArai 0:5b88d5760320 58
kenjiArai 0:5b88d5760320 59 int InterruptIn::read()
kenjiArai 0:5b88d5760320 60 {
kenjiArai 0:5b88d5760320 61 // Read only
kenjiArai 0:5b88d5760320 62 return gpio_read(&gpio);
kenjiArai 0:5b88d5760320 63 }
kenjiArai 0:5b88d5760320 64
kenjiArai 0:5b88d5760320 65 void InterruptIn::mode(PinMode pull)
kenjiArai 0:5b88d5760320 66 {
kenjiArai 0:5b88d5760320 67 core_util_critical_section_enter();
kenjiArai 0:5b88d5760320 68 gpio_mode(&gpio, pull);
kenjiArai 0:5b88d5760320 69 core_util_critical_section_exit();
kenjiArai 0:5b88d5760320 70 }
kenjiArai 0:5b88d5760320 71
kenjiArai 0:5b88d5760320 72 void InterruptIn::rise(Callback<void()> func)
kenjiArai 0:5b88d5760320 73 {
kenjiArai 0:5b88d5760320 74 core_util_critical_section_enter();
kenjiArai 0:5b88d5760320 75 if (func) {
kenjiArai 0:5b88d5760320 76 _rise = func;
kenjiArai 0:5b88d5760320 77 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
kenjiArai 0:5b88d5760320 78 } else {
kenjiArai 0:5b88d5760320 79 _rise = NULL;
kenjiArai 0:5b88d5760320 80 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
kenjiArai 0:5b88d5760320 81 }
kenjiArai 0:5b88d5760320 82 core_util_critical_section_exit();
kenjiArai 0:5b88d5760320 83 }
kenjiArai 0:5b88d5760320 84
kenjiArai 0:5b88d5760320 85 void InterruptIn::fall(Callback<void()> func)
kenjiArai 0:5b88d5760320 86 {
kenjiArai 0:5b88d5760320 87 core_util_critical_section_enter();
kenjiArai 0:5b88d5760320 88 if (func) {
kenjiArai 0:5b88d5760320 89 _fall = func;
kenjiArai 0:5b88d5760320 90 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
kenjiArai 0:5b88d5760320 91 } else {
kenjiArai 0:5b88d5760320 92 _fall = NULL;
kenjiArai 0:5b88d5760320 93 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
kenjiArai 0:5b88d5760320 94 }
kenjiArai 0:5b88d5760320 95 core_util_critical_section_exit();
kenjiArai 0:5b88d5760320 96 }
kenjiArai 0:5b88d5760320 97
kenjiArai 0:5b88d5760320 98 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event)
kenjiArai 0:5b88d5760320 99 {
kenjiArai 0:5b88d5760320 100 InterruptIn *handler = (InterruptIn *)id;
kenjiArai 0:5b88d5760320 101 switch (event) {
kenjiArai 0:5b88d5760320 102 case IRQ_RISE:
kenjiArai 0:5b88d5760320 103 if (handler->_rise) {
kenjiArai 0:5b88d5760320 104 handler->_rise();
kenjiArai 0:5b88d5760320 105 }
kenjiArai 0:5b88d5760320 106 break;
kenjiArai 0:5b88d5760320 107 case IRQ_FALL:
kenjiArai 0:5b88d5760320 108 if (handler->_fall) {
kenjiArai 0:5b88d5760320 109 handler->_fall();
kenjiArai 0:5b88d5760320 110 }
kenjiArai 0:5b88d5760320 111 break;
kenjiArai 0:5b88d5760320 112 case IRQ_NONE:
kenjiArai 0:5b88d5760320 113 break;
kenjiArai 0:5b88d5760320 114 }
kenjiArai 0:5b88d5760320 115 }
kenjiArai 0:5b88d5760320 116
kenjiArai 0:5b88d5760320 117 void InterruptIn::enable_irq()
kenjiArai 0:5b88d5760320 118 {
kenjiArai 0:5b88d5760320 119 core_util_critical_section_enter();
kenjiArai 0:5b88d5760320 120 gpio_irq_enable(&gpio_irq);
kenjiArai 0:5b88d5760320 121 core_util_critical_section_exit();
kenjiArai 0:5b88d5760320 122 }
kenjiArai 0:5b88d5760320 123
kenjiArai 0:5b88d5760320 124 void InterruptIn::disable_irq()
kenjiArai 0:5b88d5760320 125 {
kenjiArai 0:5b88d5760320 126 core_util_critical_section_enter();
kenjiArai 0:5b88d5760320 127 gpio_irq_disable(&gpio_irq);
kenjiArai 0:5b88d5760320 128 core_util_critical_section_exit();
kenjiArai 0:5b88d5760320 129 }
kenjiArai 0:5b88d5760320 130
kenjiArai 0:5b88d5760320 131 InterruptIn::operator int()
kenjiArai 0:5b88d5760320 132 {
kenjiArai 0:5b88d5760320 133 // Underlying call is atomic
kenjiArai 0:5b88d5760320 134 return read();
kenjiArai 0:5b88d5760320 135 }
kenjiArai 0:5b88d5760320 136
kenjiArai 0:5b88d5760320 137 } // namespace mbed
kenjiArai 0:5b88d5760320 138
kenjiArai 0:5b88d5760320 139 #endif