WallThermostatControlMsg.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 Wall Thermostat Control messages
 *
 * @author Paul Hampson (cyclingengineer)
 * @since 1.6.0
 */
public class WallThermostatControlMsg extends BaseMsg {

    final static private int WALL_THERMOSTAT_CONTROL_SET_POINT_AND_MEASURED_PAYLOAD_LEN = 2; /*
                                                                                              * in
                                                                                              * bytes
                                                                                              */
    final static private int WALL_THERMOSTAT_CONTROL_SET_POINT_ONLY_PAYLOAD_LEN = 1; /*
                                                                                      * in
                                                                                      * bytes
                                                                                      */

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

    private Double desiredTemperature;
    private Double measuredTemperature;

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

        if (this.payload.length == WALL_THERMOSTAT_CONTROL_SET_POINT_AND_MEASURED_PAYLOAD_LEN) {
            desiredTemperature = (this.payload[0] & 0x7F) / 2.0;
            int mTemp = (this.payload[0] & 0x80);
            mTemp <<= 1;
            mTemp |= ((this.payload[1]) & 0xff);
            measuredTemperature = mTemp / 10.0; // temperature over 25.5 uses
                                                // extra bit in
                                                // desiredTemperature byte
        } else if (this.payload.length == WALL_THERMOSTAT_CONTROL_SET_POINT_ONLY_PAYLOAD_LEN) {
            desiredTemperature = (this.payload[0] & 0x7F) / 2.0;
            measuredTemperature = null;
        } else {
            logger.error("Got " + this.msgType + " message with incorrect length!");
        }
    }

    public WallThermostatControlMsg(byte msgCount, byte msgFlag, byte groupId, String srcAddr, String dstAddr) {
        super(msgCount, msgFlag, MaxCulMsgType.WALL_THERMOSTAT_STATE, groupId, srcAddr, dstAddr);
    }

    @Override
    protected void printFormattedPayload() {
        logger.debug("\tDesired Temperature  => " + desiredTemperature);
        logger.debug("\tMeasured Temperature => " + measuredTemperature);
    }

    public Double getMeasuredTemperature() {
        return measuredTemperature;
    }

    public Double getDesiredTemperature() {
        return desiredTemperature;
    }
}