2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
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
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.knx.internal.dpt;
15 import static org.openhab.binding.knx.internal.dpt.DPTUtil.NORMALIZED_DPT;
17 import java.math.BigDecimal;
18 import java.math.RoundingMode;
19 import java.util.Locale;
20 import java.util.regex.Matcher;
22 import org.eclipse.jdt.annotation.NonNullByDefault;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.openhab.core.library.types.DateTimeType;
25 import org.openhab.core.library.types.DecimalType;
26 import org.openhab.core.library.types.HSBType;
27 import org.openhab.core.library.types.IncreaseDecreaseType;
28 import org.openhab.core.library.types.OnOffType;
29 import org.openhab.core.library.types.OpenClosedType;
30 import org.openhab.core.library.types.PercentType;
31 import org.openhab.core.library.types.QuantityType;
32 import org.openhab.core.library.types.StopMoveType;
33 import org.openhab.core.library.types.StringType;
34 import org.openhab.core.library.types.UpDownType;
35 import org.openhab.core.library.unit.SIUnits;
36 import org.openhab.core.types.Type;
37 import org.openhab.core.util.ColorUtil;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
41 import tuwien.auto.calimero.KNXException;
42 import tuwien.auto.calimero.dptxlator.DPT;
43 import tuwien.auto.calimero.dptxlator.DPTXlator;
44 import tuwien.auto.calimero.dptxlator.DPTXlator1BitControlled;
45 import tuwien.auto.calimero.dptxlator.DPTXlator2ByteFloat;
46 import tuwien.auto.calimero.dptxlator.DPTXlator3BitControlled;
47 import tuwien.auto.calimero.dptxlator.DPTXlator4ByteFloat;
48 import tuwien.auto.calimero.dptxlator.DPTXlatorDate;
49 import tuwien.auto.calimero.dptxlator.DPTXlatorDateTime;
50 import tuwien.auto.calimero.dptxlator.DPTXlatorTime;
51 import tuwien.auto.calimero.dptxlator.TranslatorTypes;
54 * This class encodes openHAB data types to strings for sending via Calimero
56 * Parts of this code are based on the openHAB KNXCoreTypeMapper by Kai Kreuzer et al.
58 * @author Jan N. Klug - Initial contribution
61 public class ValueEncoder {
62 private static final Logger LOGGER = LoggerFactory.getLogger(ValueEncoder.class);
64 private ValueEncoder() {
65 // prevent instantiation
69 * Formats the given value as String for outputting via Calimero.
71 * @param value the value
72 * @param dptId the DPT id to use for formatting the string (e.g. 9.001)
73 * @return the value formatted as String
75 public static @Nullable String encode(Type value, String dptId) {
76 Matcher m = DPTUtil.DPT_PATTERN.matcher(dptId);
77 if (!m.matches() || m.groupCount() != 2) {
78 LOGGER.warn("Couldn't identify main/sub number in dptId '{}'", dptId);
82 String mainNumber = m.group("main");
85 DPTXlator translator = TranslatorTypes.createTranslator(Integer.parseInt(mainNumber),
86 NORMALIZED_DPT.getOrDefault(dptId, dptId));
87 DPT dpt = translator.getType();
89 // check for HSBType first, because it extends PercentType as well
90 if (value instanceof HSBType) {
91 return handleHSBType(dptId, (HSBType) value);
92 } else if (value instanceof OnOffType) {
93 return OnOffType.OFF.equals(value) ? dpt.getLowerValue() : dpt.getUpperValue();
94 } else if (value instanceof UpDownType) {
95 return UpDownType.UP.equals(value) ? dpt.getLowerValue() : dpt.getUpperValue();
96 } else if (value instanceof IncreaseDecreaseType) {
97 DPT valueDPT = ((DPTXlator3BitControlled.DPT3BitControlled) dpt).getControlDPT();
98 return IncreaseDecreaseType.DECREASE.equals(value) ? valueDPT.getLowerValue() + " 5"
99 : valueDPT.getUpperValue() + " 5";
100 } else if (value instanceof OpenClosedType) {
101 return OpenClosedType.CLOSED.equals(value) ? dpt.getLowerValue() : dpt.getUpperValue();
102 } else if (value instanceof StopMoveType) {
103 return StopMoveType.STOP.equals(value) ? dpt.getLowerValue() : dpt.getUpperValue();
104 } else if (value instanceof PercentType) {
105 int intValue = ((PercentType) value).intValue();
106 return "251.600".equals(dptId) ? String.format("- - - %d %%", intValue) : String.valueOf(intValue);
107 } else if (value instanceof DecimalType || value instanceof QuantityType<?>) {
108 return handleNumericTypes(dptId, mainNumber, dpt, value);
109 } else if (value instanceof StringType) {
110 return value.toString();
111 } else if (value instanceof DateTimeType) {
112 return handleDateTimeType(dptId, (DateTimeType) value);
114 } catch (KNXException e) {
116 } catch (Exception e) {
117 LOGGER.warn("An exception occurred converting value {} to dpt id {}: error message={}", value, dptId,
122 LOGGER.debug("formatAsDPTString: Couldn't convert value {} to dpt id {} (no mapping).", value, dptId);
127 * Formats the given internal <code>dateType</code> to a knx readable String
128 * according to the target datapoint type <code>dpt</code>.
130 * @param value the input value
131 * @param dptId the target datapoint type
133 * @return a String which contains either an ISO8601 formatted date (yyyy-mm-dd),
134 * a formatted 24-hour clock with the day of week prepended (Mon, 12:00:00) or
135 * a formatted 24-hour clock (12:00:00)
137 private static @Nullable String handleDateTimeType(String dptId, DateTimeType value) {
138 if (DPTXlatorDate.DPT_DATE.getID().equals(dptId)) {
139 return value.format("%tF");
140 } else if (DPTXlatorTime.DPT_TIMEOFDAY.getID().equals(dptId)) {
141 return value.format(Locale.US, "%1$ta, %1$tT");
142 } else if (DPTXlatorDateTime.DPT_DATE_TIME.getID().equals(dptId)) {
143 return value.format(Locale.US, "%tF %1$tT");
145 LOGGER.warn("Could not format DateTimeType for datapoint type '{}'", dptId);
149 private static String handleHSBType(String dptId, HSBType hsb) {
152 return "r:" + convertPercentToByte(hsb.getRed()) + " g:" + convertPercentToByte(hsb.getGreen()) + " b:"
153 + convertPercentToByte(hsb.getBlue());
155 // MDT specific: mis-use 232.600 for hsv instead of rgb
156 int hue = hsb.getHue().toBigDecimal().multiply(BigDecimal.valueOf(255))
157 .divide(BigDecimal.valueOf(360), 2, RoundingMode.HALF_UP).intValue();
158 return "r:" + hue + " g:" + convertPercentToByte(hsb.getSaturation()) + " b:"
159 + convertPercentToByte(hsb.getBrightness());
161 double[] xyY = ColorUtil.hsbToXY(hsb);
162 return String.format("(%,.4f %,.4f) %,.1f %%", xyY[0], xyY[1], xyY[2] * 100.0);
164 return String.format("%d %d %d - %%", hsb.getRed().intValue(), hsb.getGreen().intValue(),
165 hsb.getBlue().intValue());
167 return hsb.getHue().toString();
169 return hsb.getBrightness().toString();
173 private static String handleNumericTypes(String dptId, String mainNumber, DPT dpt, Type value) {
174 BigDecimal bigDecimal;
175 if (value instanceof DecimalType decimalType) {
176 bigDecimal = decimalType.toBigDecimal();
178 String unit = DPTUnits.getUnitForDpt(dptId);
180 // exception for DPT using temperature differences
181 // - conversion °C or °F to K is wrong for differences,
182 // - stick to the unit given, fix the scaling for °F
183 // 9.002 DPT_Value_Tempd
184 // 9.003 DPT_Value_Tempa
185 // 9.023 DPT_KelvinPerPercent
186 if (DPTXlator2ByteFloat.DPT_TEMPERATURE_DIFFERENCE.getID().equals(dptId)
187 || DPTXlator2ByteFloat.DPT_TEMPERATURE_GRADIENT.getID().equals(dptId)
188 || DPTXlator2ByteFloat.DPT_KELVIN_PER_PERCENT.getID().equals(dptId)) {
189 // match unicode character or °C
190 if (value.toString().contains(SIUnits.CELSIUS.getSymbol()) || value.toString().contains("°C")) {
191 unit = unit.replace("K", "°C");
192 } else if (value.toString().contains("°F")) {
193 unit = unit.replace("K", "°F");
194 value = ((QuantityType<?>) value).multiply(BigDecimal.valueOf(5.0 / 9.0));
196 } else if (DPTXlator4ByteFloat.DPT_LIGHT_QUANTITY.getID().equals(dptId)) {
197 if (!value.toString().contains("J")) {
198 unit = unit.replace("J", "lm*s");
200 } else if (DPTXlator4ByteFloat.DPT_ELECTRIC_FLUX.getID().equals(dptId)) {
201 // use alternate definition of flux
202 if (value.toString().contains("C")) {
208 QuantityType<?> converted = ((QuantityType<?>) value).toUnit(unit);
209 if (converted == null) {
210 LOGGER.warn("Could not convert {} to unit {}, stripping unit only. Check your configuration.",
212 bigDecimal = ((QuantityType<?>) value).toBigDecimal();
214 bigDecimal = converted.toBigDecimal();
217 bigDecimal = ((QuantityType<?>) value).toBigDecimal();
220 switch (mainNumber) {
222 DPT valueDPT = ((DPTXlator1BitControlled.DPT1BitControlled) dpt).getValueDPT();
223 switch (bigDecimal.intValue()) {
225 return "0 " + valueDPT.getLowerValue();
227 return "0 " + valueDPT.getUpperValue();
229 return "1 " + valueDPT.getLowerValue();
231 return "1 " + valueDPT.getUpperValue();
234 int intVal = bigDecimal.intValue();
236 return "learn " + (intVal - 0x80);
238 return "activate " + intVal;
241 return bigDecimal.stripTrailingZeros().toPlainString();
246 * convert 0...100% to 1 byte 0..255
251 private static int convertPercentToByte(PercentType percent) {
252 return percent.toBigDecimal().multiply(BigDecimal.valueOf(255))
253 .divide(BigDecimal.valueOf(100), 2, RoundingMode.HALF_UP).intValue();