2 * Copyright (c) 2010-2024 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.text.DecimalFormat;
20 import java.util.Locale;
21 import java.util.regex.Matcher;
23 import org.eclipse.jdt.annotation.NonNullByDefault;
24 import org.eclipse.jdt.annotation.Nullable;
25 import org.openhab.core.library.types.DateTimeType;
26 import org.openhab.core.library.types.DecimalType;
27 import org.openhab.core.library.types.HSBType;
28 import org.openhab.core.library.types.IncreaseDecreaseType;
29 import org.openhab.core.library.types.OnOffType;
30 import org.openhab.core.library.types.OpenClosedType;
31 import org.openhab.core.library.types.PercentType;
32 import org.openhab.core.library.types.QuantityType;
33 import org.openhab.core.library.types.StopMoveType;
34 import org.openhab.core.library.types.StringType;
35 import org.openhab.core.library.types.UpDownType;
36 import org.openhab.core.library.unit.SIUnits;
37 import org.openhab.core.library.unit.Units;
38 import org.openhab.core.types.Type;
39 import org.openhab.core.util.ColorUtil;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
43 import tuwien.auto.calimero.KNXException;
44 import tuwien.auto.calimero.dptxlator.DPT;
45 import tuwien.auto.calimero.dptxlator.DPTXlator;
46 import tuwien.auto.calimero.dptxlator.DPTXlator1BitControlled;
47 import tuwien.auto.calimero.dptxlator.DPTXlator2ByteFloat;
48 import tuwien.auto.calimero.dptxlator.DPTXlator3BitControlled;
49 import tuwien.auto.calimero.dptxlator.DPTXlator4ByteFloat;
50 import tuwien.auto.calimero.dptxlator.DPTXlatorBoolean;
51 import tuwien.auto.calimero.dptxlator.DPTXlatorDate;
52 import tuwien.auto.calimero.dptxlator.DPTXlatorDateTime;
53 import tuwien.auto.calimero.dptxlator.DPTXlatorTime;
54 import tuwien.auto.calimero.dptxlator.TranslatorTypes;
57 * This class encodes openHAB data types to strings for sending via Calimero
59 * Parts of this code are based on the openHAB KNXCoreTypeMapper by Kai Kreuzer et al.
61 * @author Jan N. Klug - Initial contribution
64 public class ValueEncoder {
65 private static final Logger LOGGER = LoggerFactory.getLogger(ValueEncoder.class);
67 private ValueEncoder() {
68 // prevent instantiation
72 * Formats the given value as String for outputting via Calimero.
74 * @param value the value
75 * @param dptId the DPT id to use for formatting the string (e.g. 9.001)
76 * @return the value formatted as String
78 public static @Nullable String encode(Type value, String dptId) {
79 Matcher m = DPTUtil.DPT_PATTERN.matcher(dptId);
80 if (!m.matches() || m.groupCount() != 2) {
81 LOGGER.warn("Couldn't identify main/sub number in dptId '{}'", dptId);
85 String mainNumber = m.group("main");
88 DPTXlator translator = TranslatorTypes.createTranslator(Integer.parseInt(mainNumber),
89 NORMALIZED_DPT.getOrDefault(dptId, dptId));
90 DPT dpt = translator.getType();
92 // check for HSBType first, because it extends PercentType as well
93 if (value instanceof HSBType type) {
94 return handleHSBType(dptId, type);
95 } else if (value instanceof OnOffType) {
96 return OnOffType.OFF == value ? dpt.getLowerValue() : dpt.getUpperValue();
97 } else if (value instanceof UpDownType) {
98 return UpDownType.UP == value ? dpt.getLowerValue() : dpt.getUpperValue();
99 } else if (value instanceof IncreaseDecreaseType) {
100 DPT valueDPT = ((DPTXlator3BitControlled.DPT3BitControlled) dpt).getControlDPT();
101 return IncreaseDecreaseType.DECREASE == value ? valueDPT.getLowerValue() + " 5"
102 : valueDPT.getUpperValue() + " 5";
103 } else if (value instanceof OpenClosedType) {
104 return OpenClosedType.CLOSED == value ? dpt.getLowerValue() : dpt.getUpperValue();
105 } else if (value instanceof StopMoveType) {
106 return StopMoveType.STOP == value ? dpt.getLowerValue() : dpt.getUpperValue();
107 } else if (value instanceof PercentType type) {
108 int intValue = type.intValue();
109 return "251.600".equals(dptId) ? String.format("- - - %d %%", intValue) : String.valueOf(intValue);
110 } else if (value instanceof DecimalType || value instanceof QuantityType<?>) {
111 return handleNumericTypes(dptId, mainNumber, dpt, value);
112 } else if (value instanceof StringType) {
113 if ("243.600".equals(dptId) || "249.600".equals(dptId)) {
114 return value.toString().replace('.', ((DecimalFormat) DecimalFormat.getInstance())
115 .getDecimalFormatSymbols().getDecimalSeparator());
117 return value.toString();
118 } else if (value instanceof DateTimeType type) {
119 return handleDateTimeType(dptId, type);
121 } catch (KNXException e) {
123 } catch (Exception e) {
124 LOGGER.warn("An exception occurred converting value {} to dpt id {}: error message={}", value, dptId,
129 LOGGER.debug("formatAsDPTString: Couldn't convert value {} to dpt id {} (no mapping).", value, dptId);
134 * Formats the given internal <code>dateType</code> to a knx readable String
135 * according to the target datapoint type <code>dpt</code>.
137 * @param value the input value
138 * @param dptId the target datapoint type
140 * @return a String which contains either an ISO8601 formatted date (yyyy-mm-dd),
141 * a formatted 24-hour clock with the day of week prepended (Mon, 12:00:00) or
142 * a formatted 24-hour clock (12:00:00)
144 private static @Nullable String handleDateTimeType(String dptId, DateTimeType value) {
145 if (DPTXlatorDate.DPT_DATE.getID().equals(dptId)) {
146 return value.format("%tF");
147 } else if (DPTXlatorTime.DPT_TIMEOFDAY.getID().equals(dptId)) {
148 return value.format(Locale.US, "%1$ta, %1$tT");
149 } else if (DPTXlatorDateTime.DPT_DATE_TIME.getID().equals(dptId)) {
150 return value.format(Locale.US, "%tF %1$tT");
152 LOGGER.warn("Could not format DateTimeType for datapoint type '{}'", dptId);
156 private static String handleHSBType(String dptId, HSBType hsb) {
159 int[] rgb = ColorUtil.hsbToRgb(hsb);
160 return String.format("r:%d g:%d b:%d", rgb[0], rgb[1], rgb[2]);
162 // MDT specific: mis-use 232.600 for hsv instead of rgb
163 int hue = hsb.getHue().toBigDecimal().multiply(BigDecimal.valueOf(255))
164 .divide(BigDecimal.valueOf(360), 0, RoundingMode.HALF_UP).intValue();
165 return "r:" + hue + " g:" + convertPercentToByte(hsb.getSaturation()) + " b:"
166 + convertPercentToByte(hsb.getBrightness());
168 double[] xyY = ColorUtil.hsbToXY(hsb);
169 return String.format("(%,.4f %,.4f) %,.1f %%", xyY[0], xyY[1], xyY[2] * 100.0);
171 PercentType[] rgbw = ColorUtil.hsbToRgbPercent(hsb);
172 return String.format("%,.1f %,.1f %,.1f - %%", rgbw[0].doubleValue(), rgbw[1].doubleValue(),
173 rgbw[2].doubleValue());
175 PercentType[] rgbw2 = ColorUtil.hsbToRgbwPercent(hsb);
176 return String.format("%,.1f %,.1f %,.1f %,.1f %%", rgbw2[0].doubleValue(), rgbw2[1].doubleValue(),
177 rgbw2[2].doubleValue(), rgbw2[3].doubleValue());
179 return hsb.getHue().toString();
181 return hsb.getBrightness().toString();
185 private static String handleNumericTypes(String dptId, String mainNumber, DPT dpt, Type value) {
186 BigDecimal bigDecimal;
187 if (value instanceof DecimalType decimalType) {
188 bigDecimal = decimalType.toBigDecimal();
190 String unit = DPTUnits.getUnitForDpt(dptId);
192 // exception for DPT using temperature differences
193 // - conversion °C or °F to K is wrong for differences,
194 // - stick to the unit given, fix the scaling for °F
195 // 9.002 DPT_Value_Tempd
196 // 9.003 DPT_Value_Tempa
197 // 9.023 DPT_KelvinPerPercent
198 if (DPTXlator2ByteFloat.DPT_TEMPERATURE_DIFFERENCE.getID().equals(dptId)
199 || DPTXlator2ByteFloat.DPT_TEMPERATURE_GRADIENT.getID().equals(dptId)
200 || DPTXlator2ByteFloat.DPT_KELVIN_PER_PERCENT.getID().equals(dptId)) {
201 // match unicode character or °C
202 if (value.toString().contains(SIUnits.CELSIUS.getSymbol()) || value.toString().contains("°C")) {
204 unit = unit.replace("K", "°C");
206 } else if (value.toString().contains("°F")) {
207 // an new approach to handle temperature differences was introduced to core
208 // after 4.0, stripping the unit and and creating a new QuantityType works
209 // both with core release 4.0 and current snapshot
210 boolean perPercent = value.toString().contains("/%");
211 value = new QuantityType<>(((QuantityType<?>) value).doubleValue() * 5.0 / 9.0, Units.KELVIN);
212 // PercentType needs to be adapted
214 value = ((QuantityType<?>) value).multiply(BigDecimal.valueOf(100));
217 } else if (DPTXlator4ByteFloat.DPT_LIGHT_QUANTITY.getID().equals(dptId)) {
218 if (!value.toString().contains("J")) {
220 unit = unit.replace("J", "lm*s");
223 } else if (DPTXlator4ByteFloat.DPT_ELECTRIC_FLUX.getID().equals(dptId)) {
224 // use alternate definition of flux
225 if (value.toString().contains("C")) {
231 QuantityType<?> converted = ((QuantityType<?>) value).toUnit(unit);
232 if (converted == null) {
233 LOGGER.warn("Could not convert {} to unit {}, stripping unit only. Check your configuration.",
235 bigDecimal = ((QuantityType<?>) value).toBigDecimal();
237 bigDecimal = converted.toBigDecimal();
240 bigDecimal = ((QuantityType<?>) value).toBigDecimal();
243 switch (mainNumber) {
245 if (DPTXlatorBoolean.DPT_SCENE_AB.getID().equals(dptId)) {
246 return (bigDecimal.intValue() == 0) ? dpt.getLowerValue() : dpt.getUpperValue();
248 return bigDecimal.stripTrailingZeros().toPlainString();
250 DPT valueDPT = ((DPTXlator1BitControlled.DPT1BitControlled) dpt).getValueDPT();
251 switch (bigDecimal.intValue()) {
253 return "0 " + valueDPT.getLowerValue();
255 return "0 " + valueDPT.getUpperValue();
257 return "1 " + valueDPT.getLowerValue();
259 return "1 " + valueDPT.getUpperValue();
262 int intVal = bigDecimal.intValue();
264 return "learn " + (intVal - 0x80);
266 return "activate " + intVal;
269 if ("8.010".equals(dptId)) {
270 // 8.010 has a resolution of 0.01 and will be scaled. Calimero expects locale-specific separator.
271 return bigDecimal.stripTrailingZeros().toPlainString().replace('.',
272 ((DecimalFormat) DecimalFormat.getInstance()).getDecimalFormatSymbols()
273 .getDecimalSeparator());
277 return bigDecimal.stripTrailingZeros().toPlainString();
282 * convert 0...100% to 1 byte 0..255
287 private static int convertPercentToByte(PercentType percent) {
288 return percent.toBigDecimal().multiply(BigDecimal.valueOf(255))
289 .divide(BigDecimal.valueOf(100), 0, RoundingMode.HALF_UP).intValue();