mbed library sources
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common/InterruptIn.cpp@15:4892fe388435, 2013-08-07 (annotated)
- Committer:
- bogdanm
- Date:
- Wed Aug 07 16:43:59 2013 +0300
- Revision:
- 15:4892fe388435
- Parent:
- 13:0645d8841f51
- Child:
- 35:371630885ad6
Added LPC4088 target and interrupt chaining code
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 13:0645d8841f51 | 1 | /* mbed Microcontroller Library |
bogdanm | 13:0645d8841f51 | 2 | * Copyright (c) 2006-2013 ARM Limited |
bogdanm | 13:0645d8841f51 | 3 | * |
bogdanm | 13:0645d8841f51 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
bogdanm | 13:0645d8841f51 | 5 | * you may not use this file except in compliance with the License. |
bogdanm | 13:0645d8841f51 | 6 | * You may obtain a copy of the License at |
bogdanm | 13:0645d8841f51 | 7 | * |
bogdanm | 13:0645d8841f51 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
bogdanm | 13:0645d8841f51 | 9 | * |
bogdanm | 13:0645d8841f51 | 10 | * Unless required by applicable law or agreed to in writing, software |
bogdanm | 13:0645d8841f51 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
bogdanm | 13:0645d8841f51 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
bogdanm | 13:0645d8841f51 | 13 | * See the License for the specific language governing permissions and |
bogdanm | 13:0645d8841f51 | 14 | * limitations under the License. |
bogdanm | 13:0645d8841f51 | 15 | */ |
bogdanm | 13:0645d8841f51 | 16 | #include "InterruptIn.h" |
bogdanm | 13:0645d8841f51 | 17 | |
bogdanm | 13:0645d8841f51 | 18 | #if DEVICE_INTERRUPTIN |
bogdanm | 13:0645d8841f51 | 19 | |
bogdanm | 13:0645d8841f51 | 20 | namespace mbed { |
bogdanm | 13:0645d8841f51 | 21 | |
bogdanm | 13:0645d8841f51 | 22 | InterruptIn::InterruptIn(PinName pin) { |
bogdanm | 13:0645d8841f51 | 23 | gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this); |
bogdanm | 13:0645d8841f51 | 24 | gpio_init(&gpio, pin, PIN_INPUT); |
bogdanm | 13:0645d8841f51 | 25 | } |
bogdanm | 13:0645d8841f51 | 26 | |
bogdanm | 13:0645d8841f51 | 27 | InterruptIn::~InterruptIn() { |
bogdanm | 13:0645d8841f51 | 28 | gpio_irq_free(&gpio_irq); |
bogdanm | 13:0645d8841f51 | 29 | } |
bogdanm | 13:0645d8841f51 | 30 | |
bogdanm | 13:0645d8841f51 | 31 | int InterruptIn::read() { |
bogdanm | 13:0645d8841f51 | 32 | return gpio_read(&gpio); |
bogdanm | 13:0645d8841f51 | 33 | } |
bogdanm | 13:0645d8841f51 | 34 | |
bogdanm | 13:0645d8841f51 | 35 | void InterruptIn::mode(PinMode pull) { |
bogdanm | 13:0645d8841f51 | 36 | gpio_mode(&gpio, pull); |
bogdanm | 13:0645d8841f51 | 37 | } |
bogdanm | 13:0645d8841f51 | 38 | |
bogdanm | 15:4892fe388435 | 39 | pFunctionPointer_t InterruptIn::rise(void (*fptr)(void)) { |
bogdanm | 15:4892fe388435 | 40 | pFunctionPointer_t pf = NULL; |
bogdanm | 15:4892fe388435 | 41 | _rise.clear(); |
bogdanm | 13:0645d8841f51 | 42 | if (fptr) { |
bogdanm | 15:4892fe388435 | 43 | pf = _rise.add(fptr); |
bogdanm | 13:0645d8841f51 | 44 | gpio_irq_set(&gpio_irq, IRQ_RISE, 1); |
bogdanm | 13:0645d8841f51 | 45 | } else { |
bogdanm | 13:0645d8841f51 | 46 | gpio_irq_set(&gpio_irq, IRQ_RISE, 0); |
bogdanm | 13:0645d8841f51 | 47 | } |
bogdanm | 15:4892fe388435 | 48 | return pf; |
bogdanm | 15:4892fe388435 | 49 | } |
bogdanm | 15:4892fe388435 | 50 | |
bogdanm | 15:4892fe388435 | 51 | pFunctionPointer_t InterruptIn::rise_add_common(void (*fptr)(void), bool front) { |
bogdanm | 15:4892fe388435 | 52 | if (NULL == fptr) |
bogdanm | 15:4892fe388435 | 53 | return NULL; |
bogdanm | 15:4892fe388435 | 54 | pFunctionPointer_t pf = front ? _rise.add_front(fptr) : _rise.add(fptr); |
bogdanm | 15:4892fe388435 | 55 | gpio_irq_set(&gpio_irq, IRQ_RISE, 1); |
bogdanm | 15:4892fe388435 | 56 | return pf; |
bogdanm | 13:0645d8841f51 | 57 | } |
bogdanm | 13:0645d8841f51 | 58 | |
bogdanm | 15:4892fe388435 | 59 | bool InterruptIn::rise_remove(pFunctionPointer_t pf) { |
bogdanm | 15:4892fe388435 | 60 | bool res = _rise.remove(pf); |
bogdanm | 15:4892fe388435 | 61 | if (res && _rise.size() == 0) |
bogdanm | 15:4892fe388435 | 62 | gpio_irq_set(&gpio_irq, IRQ_RISE, 0); |
bogdanm | 15:4892fe388435 | 63 | return res; |
bogdanm | 15:4892fe388435 | 64 | } |
bogdanm | 15:4892fe388435 | 65 | |
bogdanm | 15:4892fe388435 | 66 | pFunctionPointer_t InterruptIn::fall(void (*fptr)(void)) { |
bogdanm | 15:4892fe388435 | 67 | pFunctionPointer_t pf = NULL; |
bogdanm | 15:4892fe388435 | 68 | _fall.clear(); |
bogdanm | 13:0645d8841f51 | 69 | if (fptr) { |
bogdanm | 15:4892fe388435 | 70 | pf = _fall.add(fptr); |
bogdanm | 13:0645d8841f51 | 71 | gpio_irq_set(&gpio_irq, IRQ_FALL, 1); |
bogdanm | 13:0645d8841f51 | 72 | } else { |
bogdanm | 13:0645d8841f51 | 73 | gpio_irq_set(&gpio_irq, IRQ_FALL, 0); |
bogdanm | 13:0645d8841f51 | 74 | } |
bogdanm | 15:4892fe388435 | 75 | return pf; |
bogdanm | 15:4892fe388435 | 76 | } |
bogdanm | 15:4892fe388435 | 77 | |
bogdanm | 15:4892fe388435 | 78 | pFunctionPointer_t InterruptIn::fall_add_common(void (*fptr)(void), bool front) { |
bogdanm | 15:4892fe388435 | 79 | if (NULL == fptr) |
bogdanm | 15:4892fe388435 | 80 | return NULL; |
bogdanm | 15:4892fe388435 | 81 | pFunctionPointer_t pf = front ? _fall.add_front(fptr) : _fall.add(fptr); |
bogdanm | 15:4892fe388435 | 82 | gpio_irq_set(&gpio_irq, IRQ_FALL, 1); |
bogdanm | 15:4892fe388435 | 83 | return pf; |
bogdanm | 15:4892fe388435 | 84 | } |
bogdanm | 15:4892fe388435 | 85 | |
bogdanm | 15:4892fe388435 | 86 | bool InterruptIn::fall_remove(pFunctionPointer_t pf) { |
bogdanm | 15:4892fe388435 | 87 | bool res = _fall.remove(pf); |
bogdanm | 15:4892fe388435 | 88 | if (res && _fall.size() == 0) |
bogdanm | 15:4892fe388435 | 89 | gpio_irq_set(&gpio_irq, IRQ_FALL, 0); |
bogdanm | 15:4892fe388435 | 90 | return res; |
bogdanm | 13:0645d8841f51 | 91 | } |
bogdanm | 13:0645d8841f51 | 92 | |
bogdanm | 13:0645d8841f51 | 93 | void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) { |
bogdanm | 13:0645d8841f51 | 94 | InterruptIn *handler = (InterruptIn*)id; |
bogdanm | 13:0645d8841f51 | 95 | switch (event) { |
bogdanm | 13:0645d8841f51 | 96 | case IRQ_RISE: handler->_rise.call(); break; |
bogdanm | 13:0645d8841f51 | 97 | case IRQ_FALL: handler->_fall.call(); break; |
bogdanm | 13:0645d8841f51 | 98 | case IRQ_NONE: break; |
bogdanm | 13:0645d8841f51 | 99 | } |
bogdanm | 13:0645d8841f51 | 100 | } |
bogdanm | 13:0645d8841f51 | 101 | |
bogdanm | 13:0645d8841f51 | 102 | #ifdef MBED_OPERATORS |
bogdanm | 13:0645d8841f51 | 103 | InterruptIn::operator int() { |
bogdanm | 13:0645d8841f51 | 104 | return read(); |
bogdanm | 13:0645d8841f51 | 105 | } |
bogdanm | 13:0645d8841f51 | 106 | #endif |
bogdanm | 13:0645d8841f51 | 107 | |
bogdanm | 13:0645d8841f51 | 108 | } // namespace mbed |
bogdanm | 13:0645d8841f51 | 109 | |
bogdanm | 13:0645d8841f51 | 110 | #endif |