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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 import javax.measure.quantity.Length;
  23 import javax.measure.quantity.Speed;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.openhab.binding.velbus.internal.packets.VelbusPacket;
  27 import org.openhab.binding.velbus.internal.packets.VelbusSensorReadoutRequestPacket;
  28 import org.openhab.core.library.types.QuantityType;
  29 import org.openhab.core.library.unit.MetricPrefix;
  30 import org.openhab.core.library.unit.SIUnits;
  31 import org.openhab.core.library.unit.Units;
  32 import org.openhab.core.thing.ChannelUID;
  33 import org.openhab.core.thing.Thing;
  34 import org.openhab.core.thing.ThingTypeUID;
  35 import org.openhab.core.types.Command;
  36 import org.openhab.core.types.RefreshType;
  37
  38 /**
  39  * The {@link VelbusVMBMeteoHandler} is responsible for handling commands, which are
  40  * sent to one of the channels.
  41  *
  42  * @author Cedric Boon - Initial contribution
  43  */
  44 @NonNullByDefault
  45 public class VelbusVMBMeteoHandler extends VelbusTemperatureSensorHandler {
  46     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES = new HashSet<>(Arrays.asList(THING_TYPE_VMBMETEO));
  47
  48     private static final byte RAIN_SENSOR_CHANNEL = 0x02;
  49     private static final byte LIGHT_SENSOR_CHANNEL = 0x04;
  50     private static final byte WIND_SENSOR_CHANNEL = 0x08;
  51     private static final byte ALL_SENSOR_CHANNELS = RAIN_SENSOR_CHANNEL | LIGHT_SENSOR_CHANNEL | WIND_SENSOR_CHANNEL;
  52
  53     private ChannelUID rainfallChannel;
  54     private ChannelUID illuminanceChannel;
  55     private ChannelUID windspeedChannel;
  56
  57     public VelbusVMBMeteoHandler(Thing thing) {
  58         super(thing, 0, new ChannelUID(thing.getUID(), "weatherStation", "CH10"));
  59
  60         this.rainfallChannel = new ChannelUID(thing.getUID(), "weatherStation", "CH11");
  61         this.illuminanceChannel = new ChannelUID(thing.getUID(), "weatherStation", "CH12");
  62         this.windspeedChannel = new ChannelUID(thing.getUID(), "weatherStation", "CH13");
  63     }
  64
  65     @Override
  66     public void handleCommand(ChannelUID channelUID, Command command) {
  67         super.handleCommand(channelUID, command);
  68
  69         VelbusBridgeHandler velbusBridgeHandler = getVelbusBridgeHandler();
  70         if (velbusBridgeHandler == null) {
  71             logger.warn("Velbus bridge handler not found. Cannot handle command without bridge.");
  72             return;
  73         }
  74
  75         if (command instanceof RefreshType) {
  76             if (channelUID.equals(rainfallChannel)) {
  77                 sendSensorReadoutRequest(velbusBridgeHandler, RAIN_SENSOR_CHANNEL);
  78             } else if (channelUID.equals(illuminanceChannel)) {
  79                 sendSensorReadoutRequest(velbusBridgeHandler, LIGHT_SENSOR_CHANNEL);
  80             } else if (channelUID.equals(windspeedChannel)) {
  81                 sendSensorReadoutRequest(velbusBridgeHandler, WIND_SENSOR_CHANNEL);
  82             }
  83         }
  84     }
  85
  86     @Override
  87     protected void sendSensorReadoutRequest(VelbusBridgeHandler velbusBridgeHandler) {
  88         super.sendSensorReadoutRequest(velbusBridgeHandler);
  89
  90         sendSensorReadoutRequest(velbusBridgeHandler, ALL_SENSOR_CHANNELS);
  91     }
  92
  93     protected void sendSensorReadoutRequest(VelbusBridgeHandler velbusBridgeHandler, byte channel) {
  94         VelbusSensorReadoutRequestPacket packet = new VelbusSensorReadoutRequestPacket(getModuleAddress().getAddress(),
  95                 channel);
  96
  97         byte[] packetBytes = packet.getBytes();
  98         velbusBridgeHandler.sendPacket(packetBytes);
  99     }
 100
 101     @Override
 102     protected int getClockAlarmAndProgramSelectionIndexInModuleStatus() {
 103         return 8;
 104     }
 105
 106     @Override
 107     public void onPacketReceived(byte[] packet) {
 108         super.onPacketReceived(packet);
 109
 110         logger.trace("onPacketReceived() was called");
 111
 112         if (packet[0] == VelbusPacket.STX && packet.length >= 5) {
 113             byte command = packet[4];
 114
 115             if (command == COMMAND_SENSOR_RAW_DATA && packet.length >= 10) {
 116                 byte highByteCurrentRainValue = packet[5];
 117                 byte lowByteCurrentRainValue = packet[6];
 118                 byte highByteCurrentLightValue = packet[7];
 119                 byte lowByteCurrentLightValue = packet[8];
 120                 byte highByteCurrentWindValue = packet[9];
 121                 byte lowByteCurrentWindValue = packet[10];
 122
 123                 double rainValue = (((highByteCurrentRainValue & 0xff) << 8) + (lowByteCurrentRainValue & 0xff)) / 10;
 124                 double lightValue = (((highByteCurrentLightValue & 0xff) << 8) + (lowByteCurrentLightValue & 0xff));
 125                 double windValue = (((highByteCurrentWindValue & 0xff) << 8) + (lowByteCurrentWindValue & 0xff)) / 10;
 126
 127                 QuantityType<Length> rainValueState = new QuantityType<>(rainValue, MetricPrefix.MILLI(SIUnits.METRE));
 128                 QuantityType<Illuminance> lightValueState = new QuantityType<>(lightValue, Units.LUX);
 129                 QuantityType<Speed> windValueState = new QuantityType<>(windValue, SIUnits.KILOMETRE_PER_HOUR);
 130
 131                 updateState(rainfallChannel, rainValueState);
 132                 updateState(illuminanceChannel, lightValueState);
 133                 updateState(windspeedChannel, windValueState);
 134             }
 135         }
 136     }
 137 }