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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 org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.openhab.binding.velbus.internal.VelbusChannelIdentifier;
  23 import org.openhab.binding.velbus.internal.config.VelbusDimmerConfig;
  24 import org.openhab.binding.velbus.internal.packets.VelbusDimmerPacket;
  25 import org.openhab.binding.velbus.internal.packets.VelbusPacket;
  26 import org.openhab.binding.velbus.internal.packets.VelbusStatusRequestPacket;
  27 import org.openhab.core.library.types.OnOffType;
  28 import org.openhab.core.library.types.PercentType;
  29 import org.openhab.core.thing.ChannelUID;
  30 import org.openhab.core.thing.Thing;
  31 import org.openhab.core.thing.ThingStatus;
  32 import org.openhab.core.thing.ThingStatusDetail;
  33 import org.openhab.core.thing.ThingTypeUID;
  34 import org.openhab.core.types.Command;
  35 import org.openhab.core.types.RefreshType;
  36
  37 /**
  38  * The {@link VelbusDimmerHandler} is responsible for handling commands, which are
  39  * sent to one of the channels.
  40  *
  41  * @author Cedric Boon - Initial contribution
  42  */
  43 @NonNullByDefault
  44 public class VelbusDimmerHandler extends VelbusThingHandler {
  45     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES = new HashSet<>(Arrays.asList(THING_TYPE_VMB1DM,
  46             THING_TYPE_VMB1LED, THING_TYPE_VMB4DC, THING_TYPE_VMBDME, THING_TYPE_VMBDMI, THING_TYPE_VMBDMIR));
  47
  48     private @NonNullByDefault({}) VelbusDimmerConfig dimmerConfig;
  49
  50     public VelbusDimmerHandler(Thing thing) {
  51         super(thing, 0);
  52     }
  53
  54     @Override
  55     public void initialize() {
  56         this.dimmerConfig = getConfigAs(VelbusDimmerConfig.class);
  57
  58         super.initialize();
  59     }
  60
  61     @Override
  62     public void handleCommand(ChannelUID channelUID, Command command) {
  63         VelbusBridgeHandler velbusBridgeHandler = getVelbusBridgeHandler();
  64         if (velbusBridgeHandler == null) {
  65             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE);
  66             return;
  67         }
  68
  69         if (command instanceof RefreshType) {
  70             VelbusStatusRequestPacket packet = new VelbusStatusRequestPacket(
  71                     getModuleAddress().getChannelIdentifier(channelUID));
  72
  73             byte[] packetBytes = packet.getBytes();
  74             velbusBridgeHandler.sendPacket(packetBytes);
  75         } else if (command instanceof PercentType) {
  76             byte commandByte = COMMAND_SET_VALUE;
  77
  78             VelbusDimmerPacket packet = new VelbusDimmerPacket(getModuleAddress().getChannelIdentifier(channelUID),
  79                     commandByte, ((PercentType) command).byteValue(), this.dimmerConfig.dimspeed,
  80                     isFirstGenerationDevice());
  81
  82             byte[] packetBytes = packet.getBytes();
  83             velbusBridgeHandler.sendPacket(packetBytes);
  84         } else if (command instanceof OnOffType) {
  85             byte commandByte = determineCommandByte((OnOffType) command);
  86
  87             VelbusDimmerPacket packet = new VelbusDimmerPacket(getModuleAddress().getChannelIdentifier(channelUID),
  88                     commandByte, (byte) 0x00, this.dimmerConfig.dimspeed, isFirstGenerationDevice());
  89
  90             byte[] packetBytes = packet.getBytes();
  91             velbusBridgeHandler.sendPacket(packetBytes);
  92         } else {
  93             logger.debug("The command '{}' is not supported by this handler.", command.getClass());
  94         }
  95     }
  96
  97     private byte determineCommandByte(OnOffType command) {
  98         return (command == OnOffType.ON) ? COMMAND_RESTORE_LAST_DIMVALUE : COMMAND_SET_VALUE;
  99     }
 100
 101     private Boolean isFirstGenerationDevice() {
 102         ThingTypeUID thingTypeUID = this.getThing().getThingTypeUID();
 103         return thingTypeUID.equals(THING_TYPE_VMB1DM) || thingTypeUID.equals(THING_TYPE_VMB1LED)
 104                 || thingTypeUID.equals(THING_TYPE_VMBDME);
 105     }
 106
 107     @Override
 108     public void onPacketReceived(byte[] packet) {
 109         logger.trace("onPacketReceived() was called");
 110
 111         if (packet[0] == VelbusPacket.STX && packet.length >= 5) {
 112             byte address = packet[2];
 113             byte command = packet[4];
 114
 115             if ((command == COMMAND_DIMMERCONTROLLER_STATUS) && packet.length >= 8) {
 116                 byte channel = packet[5];
 117                 byte dimValue = packet[7];
 118
 119                 VelbusChannelIdentifier velbusChannelIdentifier = new VelbusChannelIdentifier(address, channel);
 120                 PercentType state = new PercentType(dimValue);
 121                 updateState(getModuleAddress().getChannelId(velbusChannelIdentifier), state);
 122             } else if ((command == COMMAND_DIMMER_STATUS) && packet.length >= 7) {
 123                 byte dimValue = packet[6];
 124
 125                 VelbusChannelIdentifier velbusChannelIdentifier = new VelbusChannelIdentifier(address, (byte) 0x01);
 126                 PercentType state = new PercentType(dimValue);
 127                 updateState(getModuleAddress().getChannelId(velbusChannelIdentifier), state);
 128             }
 129         }
 130     }
 131 }