/*
 * Copyright 2011 Ytai Ben-Tsvi. All rights reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list
 *       of conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARSHAN POURSOHI OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those of the
 * authors and should not be interpreted as representing official policies, either expressed
 * or implied.
 */
package ioio.lib.impl;

import ioio.lib.api.DigitalOutput;
import ioio.lib.api.exception.ConnectionLostException;

import java.io.IOException;

class DigitalOutputImpl extends AbstractPin implements DigitalOutput {
    boolean value_;

    DigitalOutputImpl(IOIOImpl ioio, ResourceManager.Resource pin,
                      boolean startValue) throws ConnectionLostException {
        super(ioio, pin);
        value_ = startValue;
    }

    @Override
    synchronized public void write(boolean val) throws ConnectionLostException {
        checkState();
        if (val != value_) {
            try {
                ioio_.protocol_.setDigitalOutLevel(pin_.id, val);
                value_ = val;
            } catch (IOException e) {
                throw new ConnectionLostException(e);
            }
        }
    }
}
