SetTemperatureMsg.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.maxcul.internal.messages;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Message class to handle desired temperature updates
 *
 * @author Paul Hampson (cyclingengineer)
 * @since 1.6.0
 */
public class SetTemperatureMsg extends BaseMsg {

    final static private int SET_TEMPERATURE_PAYLOAD_LEN = 1; /* in bytes */

    private static final Logger logger = LoggerFactory.getLogger(SetTemperatureMsg.class);

    private double desiredTemperature;
    private ThermostatControlMode ctrlMode;

    private static final double TEMPERATURE_MAX = 30.5;
    private static final double TEMPERATURE_MIN = 4.5;

    public static double TEMPERATURE_ON = 30.5;
    public static double TEMPERATURE_OFF = 4.5;

    public SetTemperatureMsg(String rawMsg) {
        super(rawMsg);
        logger.debug(this.msgType + " Payload Len -> " + this.payload.length);

        if (this.payload.length == SET_TEMPERATURE_PAYLOAD_LEN) {
            /* extract temperature information */
            desiredTemperature = (this.payload[0] & 0x3f) / 2.0;
            /* extract control mode */
            ctrlMode = ThermostatControlMode.values()[(this.payload[0] >> 6)];
        } else {
            logger.error("Got " + this.msgType + " message with incorrect length!");
        }
    }

    public SetTemperatureMsg(byte msgCount, byte msgFlag, byte groupId, String srcAddr, String dstAddr,
            double temperature, ThermostatControlMode mode) {
        super(msgCount, msgFlag, MaxCulMsgType.SET_TEMPERATURE, groupId, srcAddr, dstAddr);

        desiredTemperature = temperature;
        ctrlMode = mode;

        if (temperature > TEMPERATURE_MAX) {
            temperature = TEMPERATURE_MAX;
        } else if (temperature < TEMPERATURE_MIN) {
            temperature = TEMPERATURE_MIN;
        }

        byte[] payload = new byte[SET_TEMPERATURE_PAYLOAD_LEN];
        payload[0] = (byte) (temperature * 2.0);
        payload[0] |= ((mode.toByte() & 0x3) << 6);
        super.appendPayload(payload);
    }

    public double getDesiredTemperature() {
        return desiredTemperature;
    }

    public ThermostatControlMode getControlMode() {
        return ctrlMode;
    }

    /**
     * Print output as decoded fields
     */
    @Override
    protected void printFormattedPayload() {
        logger.debug("\tDesired Temperature => " + desiredTemperature);
        logger.debug("\tControl Mode => " + ctrlMode);
    }
}