DataTypeMessage.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.comfoair.datatypes;

import org.openhab.binding.comfoair.handling.ComfoAirCommandType;
import org.openhab.core.library.types.StringType;
import org.openhab.core.types.State;

/**
 * Class to handle error messages
 *
 * @author Holger Hees
 * @since 1.3.0
 */
public class DataTypeMessage implements ComfoAirDataType {

    /**
     * {@inheritDoc}
     */
    @Override
    public State convertToState(int[] data, ComfoAirCommandType commandType) {

        int[] get_reply_data_pos = commandType.getGetReplyDataPos();

        int errorAlo = data[get_reply_data_pos[0]];
        int errorE = data[get_reply_data_pos[1]];
        int errorEA = data[get_reply_data_pos[2]];
        int errorAhi = data[get_reply_data_pos[3]];

        String errorCode = "";

        if (errorAlo > 0) {
            errorCode = "A:" + convertToCode(errorAlo);
        }

        else if (errorAhi > 0) {
            if (errorAhi == 0x80) {
                errorCode = "A0";
            }
            errorCode = "A:" + (convertToCode(errorAhi) + 8);
        }

        if (errorE > 0) {
            if (errorCode.length() > 0) {
                errorCode += " ";
            }
            errorCode += "E:" + convertToCode(errorE);
        } else if (errorEA > 0) {
            if (errorCode.length() > 0) {
                errorCode += " ";
            }
            errorCode += "EA:" + convertToCode(errorEA);
        }

        return new StringType(errorCode.length() > 0 ? errorCode : "Ok");
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int[] convertFromState(State value, ComfoAirCommandType commandType) {
        return null;
    }

    private int convertToCode(int code) {
        if (code == 0x1) {
            return 1;
        }
        if (code == 0x2) {
            return 2;
        }
        if (code == 0x4) {
            return 3;
        }
        if (code == 0x8) {
            return 4;
        }
        if (code == 0xF) {
            return 5;
        }
        if (code == 0x20) {
            return 6;
        }
        if (code == 0x40) {
            return 7;
        }
        if (code == 0x80) {
            return 8;
        }
        return -1;
    }
}