mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: common/InterruptIn.cpp
- Revision:
- 9:0ce32e54c9a7
- Parent:
- 2:143cac498751
- Child:
- 10:3bc89ef62ce7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/common/InterruptIn.cpp Mon Jun 10 16:03:00 2013 +0100 @@ -0,0 +1,74 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "InterruptIn.h" + +#if DEVICE_INTERRUPTIN + +namespace mbed { + +InterruptIn::InterruptIn(PinName pin) { + gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this); + gpio_init(&gpio, pin, PIN_INPUT); +} + +InterruptIn::~InterruptIn() { + gpio_irq_free(&gpio_irq); +} + +int InterruptIn::read() { + return gpio_read(&gpio); +} + +void InterruptIn::mode(PinMode pull) { + gpio_mode(&gpio, pull); +} + +void InterruptIn::rise(void (*fptr)(void)) { + if (fptr) { + _rise.attach(fptr); + gpio_irq_set(&gpio_irq, IRQ_RISE, 1); + } else { + gpio_irq_set(&gpio_irq, IRQ_RISE, 0); + } +} + +void InterruptIn::fall(void (*fptr)(void)) { + if (fptr) { + _fall.attach(fptr); + gpio_irq_set(&gpio_irq, IRQ_FALL, 1); + } else { + gpio_irq_set(&gpio_irq, IRQ_FALL, 0); + } +} + +void InterruptIn::_irq_handler(uint32_t id, gpio_irq_event event) { + InterruptIn *handler = (InterruptIn*)id; + switch (event) { + case IRQ_RISE: handler->_rise.call(); break; + case IRQ_FALL: handler->_fall.call(); break; + case IRQ_NONE: break; + } +} + +#ifdef MBED_OPERATORS +InterruptIn::operator int() { + return read(); +} +#endif + +} // namespace mbed + +#endif