Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/drivers/InterruptIn.cpp@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2006-2013 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16 #include "drivers/InterruptIn.h"
WFKnight 0:9b3d4731edbb 17
WFKnight 0:9b3d4731edbb 18 #if DEVICE_INTERRUPTIN
WFKnight 0:9b3d4731edbb 19
WFKnight 0:9b3d4731edbb 20 namespace mbed {
WFKnight 0:9b3d4731edbb 21
WFKnight 0:9b3d4731edbb 22 // Note: This single-parameter constructor exists to maintain binary
WFKnight 0:9b3d4731edbb 23 // compatibility.
WFKnight 0:9b3d4731edbb 24 // If not for that, we could simplify by having only the 2-param
WFKnight 0:9b3d4731edbb 25 // constructor, with a default value for the PinMode.
WFKnight 0:9b3d4731edbb 26 InterruptIn::InterruptIn(PinName pin) : gpio(),
WFKnight 0:9b3d4731edbb 27 gpio_irq(),
WFKnight 0:9b3d4731edbb 28 _rise(NULL),
WFKnight 0:9b3d4731edbb 29 _fall(NULL) {
WFKnight 0:9b3d4731edbb 30 // No lock needed in the constructor
WFKnight 0:9b3d4731edbb 31 irq_init(pin);
WFKnight 0:9b3d4731edbb 32 gpio_init_in(&gpio, pin);
WFKnight 0:9b3d4731edbb 33 }
WFKnight 0:9b3d4731edbb 34
WFKnight 0:9b3d4731edbb 35 InterruptIn::InterruptIn(PinName pin, PinMode mode) :
WFKnight 0:9b3d4731edbb 36 gpio(),
WFKnight 0:9b3d4731edbb 37 gpio_irq(),
WFKnight 0:9b3d4731edbb 38 _rise(NULL),
WFKnight 0:9b3d4731edbb 39 _fall(NULL) {
WFKnight 0:9b3d4731edbb 40 // No lock needed in the constructor
WFKnight 0:9b3d4731edbb 41 irq_init(pin);
WFKnight 0:9b3d4731edbb 42 gpio_init_in_ex(&gpio, pin, mode);
WFKnight 0:9b3d4731edbb 43 }
WFKnight 0:9b3d4731edbb 44
WFKnight 0:9b3d4731edbb 45 void InterruptIn::irq_init(PinName pin) {
WFKnight 0:9b3d4731edbb 46 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
WFKnight 0:9b3d4731edbb 47 }
WFKnight 0:9b3d4731edbb 48
WFKnight 0:9b3d4731edbb 49 InterruptIn::~InterruptIn() {
WFKnight 0:9b3d4731edbb 50 // No lock needed in the destructor
WFKnight 0:9b3d4731edbb 51 gpio_irq_free(&gpio_irq);
WFKnight 0:9b3d4731edbb 52 }
WFKnight 0:9b3d4731edbb 53
WFKnight 0:9b3d4731edbb 54 int InterruptIn::read() {
WFKnight 0:9b3d4731edbb 55 // Read only
WFKnight 0:9b3d4731edbb 56 return gpio_read(&gpio);
WFKnight 0:9b3d4731edbb 57 }
WFKnight 0:9b3d4731edbb 58
WFKnight 0:9b3d4731edbb 59 void InterruptIn::mode(PinMode pull) {
WFKnight 0:9b3d4731edbb 60 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 61 gpio_mode(&gpio, pull);
WFKnight 0:9b3d4731edbb 62 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 63 }
WFKnight 0:9b3d4731edbb 64
WFKnight 0:9b3d4731edbb 65 void InterruptIn::rise(Callback<void()> func) {
WFKnight 0:9b3d4731edbb 66 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 67 if (func) {
WFKnight 0:9b3d4731edbb 68 _rise = func;
WFKnight 0:9b3d4731edbb 69 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
WFKnight 0:9b3d4731edbb 70 } else {
WFKnight 0:9b3d4731edbb 71 _rise = NULL;
WFKnight 0:9b3d4731edbb 72 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
WFKnight 0:9b3d4731edbb 73 }
WFKnight 0:9b3d4731edbb 74 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 75 }
WFKnight 0:9b3d4731edbb 76
WFKnight 0:9b3d4731edbb 77 void InterruptIn::fall(Callback<void()> func) {
WFKnight 0:9b3d4731edbb 78 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 79 if (func) {
WFKnight 0:9b3d4731edbb 80 _fall = func;
WFKnight 0:9b3d4731edbb 81 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
WFKnight 0:9b3d4731edbb 82 } else {
WFKnight 0:9b3d4731edbb 83 _fall = NULL;
WFKnight 0:9b3d4731edbb 84 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
WFKnight 0:9b3d4731edbb 85 }
WFKnight 0:9b3d4731edbb 86 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 87 }
WFKnight 0:9b3d4731edbb 88
WFKnight 0:9b3d4731edbb 89 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
WFKnight 0:9b3d4731edbb 90 InterruptIn *handler = (InterruptIn*)id;
WFKnight 0:9b3d4731edbb 91 switch (event) {
WFKnight 0:9b3d4731edbb 92 case IRQ_RISE:
WFKnight 0:9b3d4731edbb 93 if (handler->_rise) {
WFKnight 0:9b3d4731edbb 94 handler->_rise();
WFKnight 0:9b3d4731edbb 95 }
WFKnight 0:9b3d4731edbb 96 break;
WFKnight 0:9b3d4731edbb 97 case IRQ_FALL:
WFKnight 0:9b3d4731edbb 98 if (handler->_fall) {
WFKnight 0:9b3d4731edbb 99 handler->_fall();
WFKnight 0:9b3d4731edbb 100 }
WFKnight 0:9b3d4731edbb 101 break;
WFKnight 0:9b3d4731edbb 102 case IRQ_NONE: break;
WFKnight 0:9b3d4731edbb 103 }
WFKnight 0:9b3d4731edbb 104 }
WFKnight 0:9b3d4731edbb 105
WFKnight 0:9b3d4731edbb 106 void InterruptIn::enable_irq() {
WFKnight 0:9b3d4731edbb 107 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 108 gpio_irq_enable(&gpio_irq);
WFKnight 0:9b3d4731edbb 109 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 110 }
WFKnight 0:9b3d4731edbb 111
WFKnight 0:9b3d4731edbb 112 void InterruptIn::disable_irq() {
WFKnight 0:9b3d4731edbb 113 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 114 gpio_irq_disable(&gpio_irq);
WFKnight 0:9b3d4731edbb 115 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 116 }
WFKnight 0:9b3d4731edbb 117
WFKnight 0:9b3d4731edbb 118 InterruptIn::operator int() {
WFKnight 0:9b3d4731edbb 119 // Underlying call is atomic
WFKnight 0:9b3d4731edbb 120 return read();
WFKnight 0:9b3d4731edbb 121 }
WFKnight 0:9b3d4731edbb 122
WFKnight 0:9b3d4731edbb 123 } // namespace mbed
WFKnight 0:9b3d4731edbb 124
WFKnight 0:9b3d4731edbb 125 #endif