Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

common/InterruptIn.cpp@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

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yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #include "InterruptIn.h"
yihui 0:700cadd8b708 17
yihui 0:700cadd8b708 18 #if DEVICE_INTERRUPTIN
yihui 0:700cadd8b708 19
yihui 0:700cadd8b708 20 namespace mbed {
yihui 0:700cadd8b708 21
yihui 0:700cadd8b708 22 InterruptIn::InterruptIn(PinName pin) : gpio(),
yihui 0:700cadd8b708 23 gpio_irq(),
yihui 0:700cadd8b708 24 _rise(),
yihui 0:700cadd8b708 25 _fall() {
yihui 0:700cadd8b708 26 gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
yihui 0:700cadd8b708 27 gpio_init_in(&gpio, pin);
yihui 0:700cadd8b708 28 }
yihui 0:700cadd8b708 29
yihui 0:700cadd8b708 30 InterruptIn::~InterruptIn() {
yihui 0:700cadd8b708 31 gpio_irq_free(&gpio_irq);
yihui 0:700cadd8b708 32 }
yihui 0:700cadd8b708 33
yihui 0:700cadd8b708 34 int InterruptIn::read() {
yihui 0:700cadd8b708 35 return gpio_read(&gpio);
yihui 0:700cadd8b708 36 }
yihui 0:700cadd8b708 37
yihui 0:700cadd8b708 38 void InterruptIn::mode(PinMode pull) {
yihui 0:700cadd8b708 39 gpio_mode(&gpio, pull);
yihui 0:700cadd8b708 40 }
yihui 0:700cadd8b708 41
yihui 0:700cadd8b708 42 void InterruptIn::rise(void (*fptr)(void)) {
yihui 0:700cadd8b708 43 if (fptr) {
yihui 0:700cadd8b708 44 _rise.attach(fptr);
yihui 0:700cadd8b708 45 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
yihui 0:700cadd8b708 46 } else {
yihui 0:700cadd8b708 47 gpio_irq_set(&gpio_irq, IRQ_RISE, 0);
yihui 0:700cadd8b708 48 }
yihui 0:700cadd8b708 49 }
yihui 0:700cadd8b708 50
yihui 0:700cadd8b708 51 void InterruptIn::fall(void (*fptr)(void)) {
yihui 0:700cadd8b708 52 if (fptr) {
yihui 0:700cadd8b708 53 _fall.attach(fptr);
yihui 0:700cadd8b708 54 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
yihui 0:700cadd8b708 55 } else {
yihui 0:700cadd8b708 56 gpio_irq_set(&gpio_irq, IRQ_FALL, 0);
yihui 0:700cadd8b708 57 }
yihui 0:700cadd8b708 58 }
yihui 0:700cadd8b708 59
yihui 0:700cadd8b708 60 void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) {
yihui 0:700cadd8b708 61 InterruptIn *handler = (InterruptIn*)id;
yihui 0:700cadd8b708 62 switch (event) {
yihui 0:700cadd8b708 63 case IRQ_RISE: handler->_rise.call(); break;
yihui 0:700cadd8b708 64 case IRQ_FALL: handler->_fall.call(); break;
yihui 0:700cadd8b708 65 case IRQ_NONE: break;
yihui 0:700cadd8b708 66 }
yihui 0:700cadd8b708 67 }
yihui 0:700cadd8b708 68
yihui 0:700cadd8b708 69 void InterruptIn::enable_irq() {
yihui 0:700cadd8b708 70 gpio_irq_enable(&gpio_irq);
yihui 0:700cadd8b708 71 }
yihui 0:700cadd8b708 72
yihui 0:700cadd8b708 73 void InterruptIn::disable_irq() {
yihui 0:700cadd8b708 74 gpio_irq_disable(&gpio_irq);
yihui 0:700cadd8b708 75 }
yihui 0:700cadd8b708 76
yihui 0:700cadd8b708 77 #ifdef MBED_OPERATORS
yihui 0:700cadd8b708 78 InterruptIn::operator int() {
yihui 0:700cadd8b708 79 return read();
yihui 0:700cadd8b708 80 }
yihui 0:700cadd8b708 81 #endif
yihui 0:700cadd8b708 82
yihui 0:700cadd8b708 83 } // namespace mbed
yihui 0:700cadd8b708 84
yihui 0:700cadd8b708 85 #endif