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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.velbus.internal.handler;
  14
  15 import static org.openhab.binding.velbus.internal.VelbusBindingConstants.*;
  16
  17 import java.util.Arrays;
  18 import java.util.HashSet;
  19 import java.util.Set;
  20
  21 import javax.measure.quantity.Illuminance;
  22
  23 import org.eclipse.jdt.annotation.NonNullByDefault;
  24 import org.openhab.binding.velbus.internal.packets.VelbusLightValueRequestPacket;
  25 import org.openhab.binding.velbus.internal.packets.VelbusPacket;
  26 import org.openhab.core.library.types.QuantityType;
  27 import org.openhab.core.library.unit.Units;
  28 import org.openhab.core.thing.ChannelUID;
  29 import org.openhab.core.thing.Thing;
  30 import org.openhab.core.thing.ThingStatus;
  31 import org.openhab.core.thing.ThingStatusDetail;
  32 import org.openhab.core.thing.ThingTypeUID;
  33 import org.openhab.core.types.Command;
  34 import org.openhab.core.types.RefreshType;
  35
  36 /**
  37  * The {@link VelbusVMBPIROHandler} is responsible for handling commands, which are
  38  * sent to one of the channels.
  39  *
  40  * @author Cedric Boon - Initial contribution
  41  */
  42 @NonNullByDefault
  43 public class VelbusVMBPIROHandler extends VelbusTemperatureSensorHandler {
  44     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES = new HashSet<>(Arrays.asList(THING_TYPE_VMBPIRO));
  45
  46     private ChannelUID illuminanceChannel;
  47
  48     public VelbusVMBPIROHandler(Thing thing) {
  49         super(thing, 0, new ChannelUID(thing.getUID(), "input", "CH9"));
  50
  51         this.illuminanceChannel = new ChannelUID(thing.getUID(), "input", "LIGHT");
  52     }
  53
  54     @Override
  55     public void handleCommand(ChannelUID channelUID, Command command) {
  56         super.handleCommand(channelUID, command);
  57
  58         VelbusBridgeHandler velbusBridgeHandler = getVelbusBridgeHandler();
  59         if (velbusBridgeHandler == null) {
  60             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE);
  61             return;
  62         }
  63
  64         if (command instanceof RefreshType) {
  65             if (channelUID.equals(illuminanceChannel)) {
  66                 VelbusLightValueRequestPacket packet = new VelbusLightValueRequestPacket(
  67                         getModuleAddress().getAddress());
  68
  69                 byte[] packetBytes = packet.getBytes();
  70                 velbusBridgeHandler.sendPacket(packetBytes);
  71             }
  72         }
  73     }
  74
  75     @Override
  76     public void onPacketReceived(byte[] packet) {
  77         super.onPacketReceived(packet);
  78
  79         logger.trace("onPacketReceived() was called");
  80
  81         if (packet[0] == VelbusPacket.STX && packet.length >= 5) {
  82             byte command = packet[4];
  83
  84             if (command == COMMAND_MODULE_STATUS && packet.length >= 6) {
  85                 byte highByteCurrentLightValue = packet[6];
  86                 byte lowByteCurrentLightValue = packet[7];
  87
  88                 double lightValue = (((highByteCurrentLightValue & 0xff) << 8) + (lowByteCurrentLightValue & 0xff));
  89                 QuantityType<Illuminance> lightValueState = new QuantityType<>(lightValue, Units.LUX);
  90                 updateState(illuminanceChannel, lightValueState);
  91             }
  92         }
  93     }
  94 }