takashi kadono / Mbed OS Nucleo_446

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/drivers/InterruptIn.cpp@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2006-2013 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16 #include "drivers/InterruptIn.h"
kadonotakashi 0:8fdf9a60065b 17
kadonotakashi 0:8fdf9a60065b 18 #if DEVICE_INTERRUPTIN
kadonotakashi 0:8fdf9a60065b 19
kadonotakashi 0:8fdf9a60065b 20 namespace mbed {
kadonotakashi 0:8fdf9a60065b 21
kadonotakashi 0:8fdf9a60065b 22 // Note: This single-parameter constructor exists to maintain binary
kadonotakashi 0:8fdf9a60065b 23 // compatibility.
kadonotakashi 0:8fdf9a60065b 24 // If not for that, we could simplify by having only the 2-param
kadonotakashi 0:8fdf9a60065b 25 // constructor, with a default value for the PinMode.
kadonotakashi 0:8fdf9a60065b 26 InterruptIn::InterruptIn(PinName pin) : gpio(),
kadonotakashi 0:8fdf9a60065b 27 gpio_irq(),
kadonotakashi 0:8fdf9a60065b 28 _rise(NULL),
kadonotakashi 0:8fdf9a60065b 29 _fall(NULL)
kadonotakashi 0:8fdf9a60065b 30 {
kadonotakashi 0:8fdf9a60065b 31 // No lock needed in the constructor
kadonotakashi 0:8fdf9a60065b 32 irq_init(pin);
kadonotakashi 0:8fdf9a60065b 33 gpio_init_in(&gpio, pin);
kadonotakashi 0:8fdf9a60065b 34 }
kadonotakashi 0:8fdf9a60065b 35
kadonotakashi 0:8fdf9a60065b 36 InterruptIn::InterruptIn(PinName pin, PinMode mode) :
kadonotakashi 0:8fdf9a60065b 37 gpio(),
kadonotakashi 0:8fdf9a60065b 38 gpio_irq(),
kadonotakashi 0:8fdf9a60065b 39 _rise(NULL),
kadonotakashi 0:8fdf9a60065b 40 _fall(NULL)
kadonotakashi 0:8fdf9a60065b 41 {
kadonotakashi 0:8fdf9a60065b 42 // No lock needed in the constructor
kadonotakashi 0:8fdf9a60065b 43 irq_init(pin);
kadonotakashi 0:8fdf9a60065b 44 gpio_init_in_ex(&gpio, pin, mode);
kadonotakashi 0:8fdf9a60065b 45 }
kadonotakashi 0:8fdf9a60065b 46
kadonotakashi 0:8fdf9a60065b 47 void InterruptIn::irq_init(PinName pin)
kadonotakashi 0:8fdf9a60065b 48 {
kadonotakashi 0:8fdf9a60065b 49 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
kadonotakashi 0:8fdf9a60065b 50 }
kadonotakashi 0:8fdf9a60065b 51
kadonotakashi 0:8fdf9a60065b 52 InterruptIn::~InterruptIn()
kadonotakashi 0:8fdf9a60065b 53 {
kadonotakashi 0:8fdf9a60065b 54 // No lock needed in the destructor
kadonotakashi 0:8fdf9a60065b 55 gpio_irq_free(&gpio_irq);
kadonotakashi 0:8fdf9a60065b 56 }
kadonotakashi 0:8fdf9a60065b 57
kadonotakashi 0:8fdf9a60065b 58 int InterruptIn::read()
kadonotakashi 0:8fdf9a60065b 59 {
kadonotakashi 0:8fdf9a60065b 60 // Read only
kadonotakashi 0:8fdf9a60065b 61 return gpio_read(&gpio);
kadonotakashi 0:8fdf9a60065b 62 }
kadonotakashi 0:8fdf9a60065b 63
kadonotakashi 0:8fdf9a60065b 64 void InterruptIn::mode(PinMode pull)
kadonotakashi 0:8fdf9a60065b 65 {
kadonotakashi 0:8fdf9a60065b 66 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 67 gpio_mode(&gpio, pull);
kadonotakashi 0:8fdf9a60065b 68 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 69 }
kadonotakashi 0:8fdf9a60065b 70
kadonotakashi 0:8fdf9a60065b 71 void InterruptIn::rise(Callback<void()> func)
kadonotakashi 0:8fdf9a60065b 72 {
kadonotakashi 0:8fdf9a60065b 73 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 74 if (func) {
kadonotakashi 0:8fdf9a60065b 75 _rise = func;
kadonotakashi 0:8fdf9a60065b 76 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
kadonotakashi 0:8fdf9a60065b 77 } else {
kadonotakashi 0:8fdf9a60065b 78 _rise = NULL;
kadonotakashi 0:8fdf9a60065b 79 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
kadonotakashi 0:8fdf9a60065b 80 }
kadonotakashi 0:8fdf9a60065b 81 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 82 }
kadonotakashi 0:8fdf9a60065b 83
kadonotakashi 0:8fdf9a60065b 84 void InterruptIn::fall(Callback<void()> func)
kadonotakashi 0:8fdf9a60065b 85 {
kadonotakashi 0:8fdf9a60065b 86 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 87 if (func) {
kadonotakashi 0:8fdf9a60065b 88 _fall = func;
kadonotakashi 0:8fdf9a60065b 89 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
kadonotakashi 0:8fdf9a60065b 90 } else {
kadonotakashi 0:8fdf9a60065b 91 _fall = NULL;
kadonotakashi 0:8fdf9a60065b 92 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
kadonotakashi 0:8fdf9a60065b 93 }
kadonotakashi 0:8fdf9a60065b 94 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 95 }
kadonotakashi 0:8fdf9a60065b 96
kadonotakashi 0:8fdf9a60065b 97 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event)
kadonotakashi 0:8fdf9a60065b 98 {
kadonotakashi 0:8fdf9a60065b 99 InterruptIn *handler = (InterruptIn *)id;
kadonotakashi 0:8fdf9a60065b 100 switch (event) {
kadonotakashi 0:8fdf9a60065b 101 case IRQ_RISE:
kadonotakashi 0:8fdf9a60065b 102 if (handler->_rise) {
kadonotakashi 0:8fdf9a60065b 103 handler->_rise();
kadonotakashi 0:8fdf9a60065b 104 }
kadonotakashi 0:8fdf9a60065b 105 break;
kadonotakashi 0:8fdf9a60065b 106 case IRQ_FALL:
kadonotakashi 0:8fdf9a60065b 107 if (handler->_fall) {
kadonotakashi 0:8fdf9a60065b 108 handler->_fall();
kadonotakashi 0:8fdf9a60065b 109 }
kadonotakashi 0:8fdf9a60065b 110 break;
kadonotakashi 0:8fdf9a60065b 111 case IRQ_NONE:
kadonotakashi 0:8fdf9a60065b 112 break;
kadonotakashi 0:8fdf9a60065b 113 }
kadonotakashi 0:8fdf9a60065b 114 }
kadonotakashi 0:8fdf9a60065b 115
kadonotakashi 0:8fdf9a60065b 116 void InterruptIn::enable_irq()
kadonotakashi 0:8fdf9a60065b 117 {
kadonotakashi 0:8fdf9a60065b 118 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 119 gpio_irq_enable(&gpio_irq);
kadonotakashi 0:8fdf9a60065b 120 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 121 }
kadonotakashi 0:8fdf9a60065b 122
kadonotakashi 0:8fdf9a60065b 123 void InterruptIn::disable_irq()
kadonotakashi 0:8fdf9a60065b 124 {
kadonotakashi 0:8fdf9a60065b 125 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 126 gpio_irq_disable(&gpio_irq);
kadonotakashi 0:8fdf9a60065b 127 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 128 }
kadonotakashi 0:8fdf9a60065b 129
kadonotakashi 0:8fdf9a60065b 130 InterruptIn::operator int()
kadonotakashi 0:8fdf9a60065b 131 {
kadonotakashi 0:8fdf9a60065b 132 // Underlying call is atomic
kadonotakashi 0:8fdf9a60065b 133 return read();
kadonotakashi 0:8fdf9a60065b 134 }
kadonotakashi 0:8fdf9a60065b 135
kadonotakashi 0:8fdf9a60065b 136 } // namespace mbed
kadonotakashi 0:8fdf9a60065b 137
kadonotakashi 0:8fdf9a60065b 138 #endif