Mouse code for the MacroRat
mbed-dev/drivers/InterruptIn.cpp@32:69acb14778ea, 2017-05-26 (annotated)
- Committer:
- kyleliangus
- Date:
- Fri May 26 03:46:03 2017 +0000
- Revision:
- 32:69acb14778ea
- Parent:
- 18:6a4db94011d3
PID values still wonky. IR PID vs Encoder PID also wonky
Who changed what in which revision?
User | Revision | Line number | New 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 |