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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.fineoffsetweatherstation.internal.domain;
  14
  15 import static javax.measure.MetricPrefix.HECTO;
  16 import static javax.measure.MetricPrefix.KILO;
  17 import static javax.measure.MetricPrefix.MILLI;
  18 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_CO2;
  19 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_HUMIDITY;
  20 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_ILLUMINATION;
  21 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_LIGHTNING_COUNTER;
  22 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_LIGHTNING_DISTANCE;
  23 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_LIGHTNING_TIME;
  24 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_PM10;
  25 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_PM25;
  26 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_PRESSURE;
  27 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_RAIN;
  28 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_RAIN_RATE;
  29 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_TEMPERATURE;
  30 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_UV_RADIATION;
  31 import static org.openhab.binding.fineoffsetweatherstation.internal.FineOffsetWeatherStationBindingConstants.CHANNEL_TYPE_WATER_LEAK_DETECTION;
  32 import static org.openhab.binding.fineoffsetweatherstation.internal.Utils.toInt16;
  33 import static org.openhab.binding.fineoffsetweatherstation.internal.Utils.toUInt16;
  34 import static org.openhab.binding.fineoffsetweatherstation.internal.Utils.toUInt32;
  35 import static org.openhab.binding.fineoffsetweatherstation.internal.Utils.toUInt8;
  36 import static org.openhab.core.library.unit.SIUnits.CELSIUS;
  37 import static org.openhab.core.library.unit.SIUnits.METRE;
  38 import static org.openhab.core.library.unit.SIUnits.PASCAL;
  39 import static org.openhab.core.library.unit.SIUnits.SQUARE_METRE;
  40 import static org.openhab.core.library.unit.Units.DEGREE_ANGLE;
  41 import static org.openhab.core.library.unit.Units.METRE_PER_SECOND;
  42 import static org.openhab.core.library.unit.Units.MICROGRAM_PER_CUBICMETRE;
  43 import static org.openhab.core.library.unit.Units.MILLIMETRE_PER_HOUR;
  44 import static org.openhab.core.library.unit.Units.PARTS_PER_MILLION;
  45 import static org.openhab.core.library.unit.Units.PERCENT;
  46
  47 import java.time.Instant;
  48 import java.time.ZonedDateTime;
  49 import java.util.function.BiFunction;
  50
  51 import javax.measure.Unit;
  52
  53 import org.eclipse.jdt.annotation.NonNullByDefault;
  54 import org.eclipse.jdt.annotation.Nullable;
  55 import org.openhab.binding.fineoffsetweatherstation.internal.Utils;
  56 import org.openhab.core.library.types.DateTimeType;
  57 import org.openhab.core.library.types.DecimalType;
  58 import org.openhab.core.library.types.OnOffType;
  59 import org.openhab.core.library.types.QuantityType;
  60 import org.openhab.core.library.unit.Units;
  61 import org.openhab.core.thing.type.ChannelTypeUID;
  62 import org.openhab.core.types.State;
  63 import org.openhab.core.types.UnDefType;
  64
  65 /**
  66  * Represents the measured type with conversion from the sensors' bytes to the openHAB state.
  67  *
  68  * @author Andreas Berger - Initial contribution
  69  */
  70 @NonNullByDefault
  71 public enum MeasureType {
  72
  73     TEMPERATURE(CELSIUS, 2, CHANNEL_TYPE_TEMPERATURE, (data, offset) -> toInt16(data, offset) / 10.),
  74
  75     PERCENTAGE(PERCENT, 1, CHANNEL_TYPE_HUMIDITY, (data, offset) -> toUInt8(data[offset])),
  76
  77     PRESSURE(HECTO(PASCAL), 2, CHANNEL_TYPE_PRESSURE, (data, offset) -> toUInt16(data, offset) / 10.),
  78
  79     DEGREE(DEGREE_ANGLE, 2, null, Utils::toUInt16),
  80
  81     SPEED(METRE_PER_SECOND, 2, null, (data, offset) -> toUInt16(data, offset) / 10.),
  82
  83     HEIGHT(MILLI(METRE), 2, CHANNEL_TYPE_RAIN, (data, offset) -> toUInt16(data, offset) / 10.),
  84
  85     HEIGHT_BIG(MILLI(METRE), 4, CHANNEL_TYPE_RAIN, (data, offset) -> toUInt32(data, offset) / 10.),
  86
  87     HEIGHT_PER_HOUR(MILLIMETRE_PER_HOUR, 2, CHANNEL_TYPE_RAIN_RATE, (data, offset) -> toUInt16(data, offset) / 10.),
  88
  89     HEIGHT_PER_HOUR_BIG(MILLIMETRE_PER_HOUR, 4, CHANNEL_TYPE_RAIN_RATE, (data, offset) -> toUInt32(data, offset) / 10.),
  90
  91     LUX(Units.LUX, 4, CHANNEL_TYPE_ILLUMINATION, (data, offset) -> toUInt32(data, offset) / 10.),
  92
  93     PM25(MICROGRAM_PER_CUBICMETRE, 2, CHANNEL_TYPE_PM25, (data, offset) -> toUInt16(data, offset) / 10.),
  94
  95     PM10(MICROGRAM_PER_CUBICMETRE, 2, CHANNEL_TYPE_PM10, (data, offset) -> toUInt16(data, offset) / 10.),
  96
  97     CO2(PARTS_PER_MILLION, 2, CHANNEL_TYPE_CO2, Utils::toUInt16),
  98
  99     WATER_LEAK_DETECTION(1, CHANNEL_TYPE_WATER_LEAK_DETECTION,
 100             (data, offset, context) -> toUInt8(data[offset]) != 0 ? OnOffType.ON : OnOffType.OFF),
 101
 102     LIGHTNING_DISTANCE(KILO(METRE), 1, CHANNEL_TYPE_LIGHTNING_DISTANCE, (data, offset) -> {
 103         int distance = toUInt8(data[offset]);
 104         if (distance == 0xFF) {
 105             return null;
 106         }
 107         return distance;
 108     }),
 109
 110     LIGHTNING_COUNTER(4, CHANNEL_TYPE_LIGHTNING_COUNTER,
 111             (data, offset, context) -> new DecimalType(toUInt32(data, offset))),
 112
 113     LIGHTNING_TIME(4, CHANNEL_TYPE_LIGHTNING_TIME, (data, offset, context) -> {
 114         int epochSecond = toUInt32(data, offset);
 115         if (epochSecond == 0xFFFFFFFF) {
 116             return UnDefType.UNDEF;
 117         }
 118         return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(epochSecond), context.getZoneId()));
 119     }),
 120
 121     MILLIWATT_PER_SQUARE_METRE(MILLI(Units.WATT).divide(SQUARE_METRE), 2, CHANNEL_TYPE_UV_RADIATION,
 122             (data, offset) -> Utils.toUInt16(data, offset) / 10.),
 123
 124     BYTE(1, null, (data, offset, context) -> new DecimalType(toUInt8(data[offset]))),
 125
 126     DATE_TIME2(6, null, (data, offset, context) -> new DateTimeType(
 127             ZonedDateTime.ofInstant(Instant.ofEpochSecond(toUInt32(data, offset)), context.getZoneId())));
 128
 129     private final int byteSize;
 130     private final @Nullable ChannelTypeUID channelTypeUID;
 131     private final StateConverter stateConverter;
 132
 133     /**
 134      * @param unit the unit
 135      * @param byteSize the size in the sensors' payload
 136      * @param channelTypeUID the channel type
 137      * @param valueExtractor a function to extract the sensor data into a number of the dimension defined by the unit
 138      */
 139     MeasureType(Unit<?> unit, int byteSize, @Nullable ChannelTypeUID channelTypeUID,
 140             BiFunction<byte[], Integer, @Nullable Number> valueExtractor) {
 141         this(byteSize, channelTypeUID, (bytes, offset, context) -> {
 142             Number value = valueExtractor.apply(bytes, offset);
 143             return value == null ? UnDefType.UNDEF : new QuantityType<>(value, unit);
 144         });
 145     }
 146
 147     /**
 148      * @param byteSize the size in the sensors' payload
 149      * @param channelTypeUID the channel type
 150      * @param stateConverter a function to extract the sensor data into the openHAB's state
 151      */
 152     MeasureType(int byteSize, @Nullable ChannelTypeUID channelTypeUID, StateConverter stateConverter) {
 153         this.byteSize = byteSize;
 154         this.channelTypeUID = channelTypeUID;
 155         this.stateConverter = stateConverter;
 156     }
 157
 158     public int getByteSize() {
 159         return byteSize;
 160     }
 161
 162     public @Nullable ChannelTypeUID getChannelTypeId() {
 163         return channelTypeUID;
 164     }
 165
 166     public @Nullable State toState(byte[] data, int offset, ConversionContext context) {
 167         return stateConverter.toState(data, offset, context);
 168     }
 169
 170     private interface StateConverter {
 171         @Nullable
 172         State toState(byte[] data, int offset, ConversionContext context);
 173     }
 174 }