MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/drivers/InterruptIn.cpp@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 * Copyright (c) 2006-2013 ARM Limited
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * Licensed under the Apache License, Version 2.0 (the "License");
sahilmgandhi 18:6a4db94011d3 5 * you may not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 6 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 9 *
sahilmgandhi 18:6a4db94011d3 10 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 11 * distributed under the License is distributed on an "AS IS" BASIS,
sahilmgandhi 18:6a4db94011d3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 13 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 14 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 15 */
sahilmgandhi 18:6a4db94011d3 16 #include "drivers/InterruptIn.h"
sahilmgandhi 18:6a4db94011d3 17
sahilmgandhi 18:6a4db94011d3 18 #if DEVICE_INTERRUPTIN
sahilmgandhi 18:6a4db94011d3 19
sahilmgandhi 18:6a4db94011d3 20 namespace mbed {
sahilmgandhi 18:6a4db94011d3 21
sahilmgandhi 18:6a4db94011d3 22 static void donothing() {}
sahilmgandhi 18:6a4db94011d3 23
sahilmgandhi 18:6a4db94011d3 24 InterruptIn::InterruptIn(PinName pin) : gpio(),
sahilmgandhi 18:6a4db94011d3 25 gpio_irq(),
sahilmgandhi 18:6a4db94011d3 26 _rise(),
sahilmgandhi 18:6a4db94011d3 27 _fall() {
sahilmgandhi 18:6a4db94011d3 28 // No lock needed in the constructor
sahilmgandhi 18:6a4db94011d3 29
sahilmgandhi 18:6a4db94011d3 30 _rise = donothing;
sahilmgandhi 18:6a4db94011d3 31 _fall = donothing;
sahilmgandhi 18:6a4db94011d3 32
sahilmgandhi 18:6a4db94011d3 33 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
sahilmgandhi 18:6a4db94011d3 34 gpio_init_in(&gpio, pin);
sahilmgandhi 18:6a4db94011d3 35 }
sahilmgandhi 18:6a4db94011d3 36
sahilmgandhi 18:6a4db94011d3 37 InterruptIn::~InterruptIn() {
sahilmgandhi 18:6a4db94011d3 38 // No lock needed in the destructor
sahilmgandhi 18:6a4db94011d3 39 gpio_irq_free(&gpio_irq);
sahilmgandhi 18:6a4db94011d3 40 }
sahilmgandhi 18:6a4db94011d3 41
sahilmgandhi 18:6a4db94011d3 42 int InterruptIn::read() {
sahilmgandhi 18:6a4db94011d3 43 // Read only
sahilmgandhi 18:6a4db94011d3 44 return gpio_read(&gpio);
sahilmgandhi 18:6a4db94011d3 45 }
sahilmgandhi 18:6a4db94011d3 46
sahilmgandhi 18:6a4db94011d3 47 void InterruptIn::mode(PinMode pull) {
sahilmgandhi 18:6a4db94011d3 48 core_util_critical_section_enter();
sahilmgandhi 18:6a4db94011d3 49 gpio_mode(&gpio, pull);
sahilmgandhi 18:6a4db94011d3 50 core_util_critical_section_exit();
sahilmgandhi 18:6a4db94011d3 51 }
sahilmgandhi 18:6a4db94011d3 52
sahilmgandhi 18:6a4db94011d3 53 void InterruptIn::rise(Callback<void()> func) {
sahilmgandhi 18:6a4db94011d3 54 core_util_critical_section_enter();
sahilmgandhi 18:6a4db94011d3 55 if (func) {
sahilmgandhi 18:6a4db94011d3 56 _rise = func;
sahilmgandhi 18:6a4db94011d3 57 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
sahilmgandhi 18:6a4db94011d3 58 } else {
sahilmgandhi 18:6a4db94011d3 59 _rise = donothing;
sahilmgandhi 18:6a4db94011d3 60 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
sahilmgandhi 18:6a4db94011d3 61 }
sahilmgandhi 18:6a4db94011d3 62 core_util_critical_section_exit();
sahilmgandhi 18:6a4db94011d3 63 }
sahilmgandhi 18:6a4db94011d3 64
sahilmgandhi 18:6a4db94011d3 65 void InterruptIn::fall(Callback<void()> func) {
sahilmgandhi 18:6a4db94011d3 66 core_util_critical_section_enter();
sahilmgandhi 18:6a4db94011d3 67 if (func) {
sahilmgandhi 18:6a4db94011d3 68 _fall = func;
sahilmgandhi 18:6a4db94011d3 69 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
sahilmgandhi 18:6a4db94011d3 70 } else {
sahilmgandhi 18:6a4db94011d3 71 _fall = donothing;
sahilmgandhi 18:6a4db94011d3 72 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
sahilmgandhi 18:6a4db94011d3 73 }
sahilmgandhi 18:6a4db94011d3 74 core_util_critical_section_exit();
sahilmgandhi 18:6a4db94011d3 75 }
sahilmgandhi 18:6a4db94011d3 76
sahilmgandhi 18:6a4db94011d3 77 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
sahilmgandhi 18:6a4db94011d3 78 InterruptIn *handler = (InterruptIn*)id;
sahilmgandhi 18:6a4db94011d3 79 switch (event) {
sahilmgandhi 18:6a4db94011d3 80 case IRQ_RISE: handler->_rise(); break;
sahilmgandhi 18:6a4db94011d3 81 case IRQ_FALL: handler->_fall(); break;
sahilmgandhi 18:6a4db94011d3 82 case IRQ_NONE: break;
sahilmgandhi 18:6a4db94011d3 83 }
sahilmgandhi 18:6a4db94011d3 84 }
sahilmgandhi 18:6a4db94011d3 85
sahilmgandhi 18:6a4db94011d3 86 void InterruptIn::enable_irq() {
sahilmgandhi 18:6a4db94011d3 87 core_util_critical_section_enter();
sahilmgandhi 18:6a4db94011d3 88 gpio_irq_enable(&gpio_irq);
sahilmgandhi 18:6a4db94011d3 89 core_util_critical_section_exit();
sahilmgandhi 18:6a4db94011d3 90 }
sahilmgandhi 18:6a4db94011d3 91
sahilmgandhi 18:6a4db94011d3 92 void InterruptIn::disable_irq() {
sahilmgandhi 18:6a4db94011d3 93 core_util_critical_section_enter();
sahilmgandhi 18:6a4db94011d3 94 gpio_irq_disable(&gpio_irq);
sahilmgandhi 18:6a4db94011d3 95 core_util_critical_section_exit();
sahilmgandhi 18:6a4db94011d3 96 }
sahilmgandhi 18:6a4db94011d3 97
sahilmgandhi 18:6a4db94011d3 98 InterruptIn::operator int() {
sahilmgandhi 18:6a4db94011d3 99 // Underlying call is atomic
sahilmgandhi 18:6a4db94011d3 100 return read();
sahilmgandhi 18:6a4db94011d3 101 }
sahilmgandhi 18:6a4db94011d3 102
sahilmgandhi 18:6a4db94011d3 103 } // namespace mbed
sahilmgandhi 18:6a4db94011d3 104
sahilmgandhi 18:6a4db94011d3 105 #endif