92 lines
2.9 KiB
Java
Executable File
92 lines
2.9 KiB
Java
Executable File
/*
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* Copyright 2011 Ytai Ben-Tsvi. All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARSHAN POURSOHI OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are those of the
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* authors and should not be interpreted as representing official policies, either expressed
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* or implied.
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*/
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package ioio.lib.impl;
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import ioio.lib.api.DigitalInput;
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import ioio.lib.api.exception.ConnectionLostException;
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import ioio.lib.impl.IncomingState.InputPinListener;
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import java.io.IOException;
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public class DigitalInputImpl extends AbstractPin implements DigitalInput,
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InputPinListener {
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private boolean value_;
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private boolean valid_ = false;
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DigitalInputImpl(IOIOImpl ioio, int pin) throws ConnectionLostException {
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super(ioio, pin);
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}
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@Override
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synchronized public void setValue(int value) {
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// Log.v("DigitalInputImpl", "Pin " + pinNum_ + " value is " + value);
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assert (value == 0 || value == 1);
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value_ = (value == 1);
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if (!valid_) {
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valid_ = true;
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}
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notifyAll();
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}
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synchronized public void waitForValue(boolean value)
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throws InterruptedException, ConnectionLostException {
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checkState();
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while ((!valid_ || value_ != value) && state_ != State.DISCONNECTED) {
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wait();
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}
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checkState();
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}
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@Override
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synchronized public void close() {
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super.close();
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try {
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ioio_.protocol_.setChangeNotify(pinNum_, false);
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} catch (IOException e) {
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}
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}
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@Override
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synchronized public boolean read() throws InterruptedException,
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ConnectionLostException {
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checkState();
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while (!valid_ && state_ != State.DISCONNECTED) {
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wait();
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}
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checkState();
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return value_;
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}
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@Override
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public synchronized void disconnected() {
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super.disconnected();
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notifyAll();
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}
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}
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