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.DPTXlator2ByteUnsigned;
49 import tuwien.auto.calimero.dptxlator.DPTXlator3BitControlled;
50 import tuwien.auto.calimero.dptxlator.DPTXlator4ByteFloat;
51 import tuwien.auto.calimero.dptxlator.DPTXlatorBoolean;
52 import tuwien.auto.calimero.dptxlator.DPTXlatorDate;
53 import tuwien.auto.calimero.dptxlator.DPTXlatorDateTime;
54 import tuwien.auto.calimero.dptxlator.DPTXlatorTime;
55 import tuwien.auto.calimero.dptxlator.TranslatorTypes;
58 * This class encodes openHAB data types to strings for sending via Calimero
60 * Parts of this code are based on the openHAB KNXCoreTypeMapper by Kai Kreuzer et al.
62 * @author Jan N. Klug - Initial contribution
65 public class ValueEncoder {
66 private static final Logger LOGGER = LoggerFactory.getLogger(ValueEncoder.class);
68 private ValueEncoder() {
69 // prevent instantiation
73 * Formats the given value as String for outputting via Calimero.
75 * @param value the value
76 * @param dptId the DPT id to use for formatting the string (e.g. 9.001)
77 * @return the value formatted as String
79 public static @Nullable String encode(Type value, String dptId) {
80 Matcher m = DPTUtil.DPT_PATTERN.matcher(dptId);
81 if (!m.matches() || m.groupCount() != 2) {
82 LOGGER.warn("Couldn't identify main/sub number in dptId '{}'", dptId);
86 String mainNumber = m.group("main");
89 DPTXlator translator = TranslatorTypes.createTranslator(Integer.parseInt(mainNumber),
90 NORMALIZED_DPT.getOrDefault(dptId, dptId));
91 DPT dpt = translator.getType();
93 // check for HSBType first, because it extends PercentType as well
94 if (value instanceof HSBType type) {
95 return handleHSBType(dptId, type);
96 } else if (value instanceof OnOffType) {
97 return OnOffType.OFF == value ? dpt.getLowerValue() : dpt.getUpperValue();
98 } else if (value instanceof UpDownType) {
99 return UpDownType.UP == value ? dpt.getLowerValue() : dpt.getUpperValue();
100 } else if (value instanceof IncreaseDecreaseType) {
101 DPT valueDPT = ((DPTXlator3BitControlled.DPT3BitControlled) dpt).getControlDPT();
102 return IncreaseDecreaseType.DECREASE == value ? valueDPT.getLowerValue() + " 5"
103 : valueDPT.getUpperValue() + " 5";
104 } else if (value instanceof OpenClosedType) {
105 return OpenClosedType.CLOSED == value ? dpt.getLowerValue() : dpt.getUpperValue();
106 } else if (value instanceof StopMoveType) {
107 return StopMoveType.STOP == value ? dpt.getLowerValue() : dpt.getUpperValue();
108 } else if (value instanceof PercentType type) {
109 int intValue = type.intValue();
110 return "251.600".equals(dptId) ? String.format("- - - %d %%", intValue) : String.valueOf(intValue);
111 } else if (value instanceof DecimalType || value instanceof QuantityType<?>) {
112 return handleNumericTypes(dptId, mainNumber, dpt, value);
113 } else if (value instanceof StringType) {
114 if ("243.600".equals(dptId) || "249.600".equals(dptId)) {
115 return value.toString().replace('.', ((DecimalFormat) DecimalFormat.getInstance())
116 .getDecimalFormatSymbols().getDecimalSeparator());
118 return value.toString();
119 } else if (value instanceof DateTimeType type) {
120 return handleDateTimeType(dptId, type);
122 } catch (KNXException e) {
124 } catch (Exception e) {
125 LOGGER.warn("An exception occurred converting value {} to dpt id {}: error message={}", value, dptId,
130 LOGGER.debug("formatAsDPTString: Couldn't convert value {} to dpt id {} (no mapping).", value, dptId);
135 * Formats the given internal <code>dateType</code> to a knx readable String
136 * according to the target datapoint type <code>dpt</code>.
138 * @param value the input value
139 * @param dptId the target datapoint type
141 * @return a String which contains either an ISO8601 formatted date (yyyy-mm-dd),
142 * a formatted 24-hour clock with the day of week prepended (Mon, 12:00:00) or
143 * a formatted 24-hour clock (12:00:00)
145 private static @Nullable String handleDateTimeType(String dptId, DateTimeType value) {
146 if (DPTXlatorDate.DPT_DATE.getID().equals(dptId)) {
147 return value.format("%tF");
148 } else if (DPTXlatorTime.DPT_TIMEOFDAY.getID().equals(dptId)) {
149 return value.format(Locale.US, "%1$ta, %1$tT");
150 } else if (DPTXlatorDateTime.DPT_DATE_TIME.getID().equals(dptId)) {
151 return value.format(Locale.US, "%tF %1$tT");
153 LOGGER.warn("Could not format DateTimeType for datapoint type '{}'", dptId);
157 private static String handleHSBType(String dptId, HSBType hsb) {
160 int[] rgb = ColorUtil.hsbToRgb(hsb);
161 return String.format("r:%d g:%d b:%d", rgb[0], rgb[1], rgb[2]);
163 // MDT specific: mis-use 232.600 for hsv instead of rgb
164 int hue = hsb.getHue().toBigDecimal().multiply(BigDecimal.valueOf(255))
165 .divide(BigDecimal.valueOf(360), 0, RoundingMode.HALF_UP).intValue();
166 return "r:" + hue + " g:" + convertPercentToByte(hsb.getSaturation()) + " b:"
167 + convertPercentToByte(hsb.getBrightness());
169 double[] xyY = ColorUtil.hsbToXY(hsb);
170 return String.format("(%,.4f %,.4f) %,.1f %%", xyY[0], xyY[1], xyY[2] * 100.0);
172 PercentType[] rgbw = ColorUtil.hsbToRgbPercent(hsb);
173 return String.format("%,.1f %,.1f %,.1f - %%", rgbw[0].doubleValue(), rgbw[1].doubleValue(),
174 rgbw[2].doubleValue());
176 PercentType[] rgbw2 = ColorUtil.hsbToRgbwPercent(hsb);
177 return String.format("%,.1f %,.1f %,.1f %,.1f %%", rgbw2[0].doubleValue(), rgbw2[1].doubleValue(),
178 rgbw2[2].doubleValue(), rgbw2[3].doubleValue());
180 return hsb.getHue().toString();
182 return hsb.getBrightness().toString();
186 private static String handleNumericTypes(String dptId, String mainNumber, DPT dpt, Type value) {
187 BigDecimal bigDecimal;
188 if (value instanceof DecimalType decimalType) {
189 bigDecimal = decimalType.toBigDecimal();
191 String unit = DPTUnits.getUnitForDpt(dptId);
193 // exception for DPT using temperature differences
194 // - conversion °C or °F to K is wrong for differences,
195 // - stick to the unit given, fix the scaling for °F
196 // 9.002 DPT_Value_Tempd
197 // 9.003 DPT_Value_Tempa
198 // 9.023 DPT_KelvinPerPercent
199 if (DPTXlator2ByteFloat.DPT_TEMPERATURE_DIFFERENCE.getID().equals(dptId)
200 || DPTXlator2ByteFloat.DPT_TEMPERATURE_GRADIENT.getID().equals(dptId)
201 || DPTXlator2ByteFloat.DPT_KELVIN_PER_PERCENT.getID().equals(dptId)) {
202 // match unicode character or °C
203 if (value.toString().contains(SIUnits.CELSIUS.getSymbol()) || value.toString().contains("°C")) {
205 unit = unit.replace("K", "°C");
207 } else if (value.toString().contains("°F")) {
208 // an new approach to handle temperature differences was introduced to core
209 // after 4.0, stripping the unit and and creating a new QuantityType works
210 // both with core release 4.0 and current snapshot
211 boolean perPercent = value.toString().contains("/%");
212 value = new QuantityType<>(((QuantityType<?>) value).doubleValue() * 5.0 / 9.0, Units.KELVIN);
213 // PercentType needs to be adapted
215 value = ((QuantityType<?>) value).multiply(BigDecimal.valueOf(100));
218 } else if (DPTXlator4ByteFloat.DPT_LIGHT_QUANTITY.getID().equals(dptId)) {
219 if (!value.toString().contains("J")) {
221 unit = unit.replace("J", "lm*s");
224 } else if (DPTXlator4ByteFloat.DPT_ELECTRIC_FLUX.getID().equals(dptId)) {
225 // use alternate definition of flux
226 if (value.toString().contains("C")) {
232 QuantityType<?> converted = ((QuantityType<?>) value).toUnit(unit);
233 if (converted == null) {
234 LOGGER.warn("Could not convert {} to unit {}, stripping unit only. Check your configuration.",
236 bigDecimal = ((QuantityType<?>) value).toBigDecimal();
238 bigDecimal = converted.toBigDecimal();
241 bigDecimal = ((QuantityType<?>) value).toBigDecimal();
244 switch (mainNumber) {
246 if (DPTXlatorBoolean.DPT_SCENE_AB.getID().equals(dptId)) {
247 return (bigDecimal.intValue() == 0) ? dpt.getLowerValue() : dpt.getUpperValue();
249 return bigDecimal.stripTrailingZeros().toPlainString();
251 DPT valueDPT = ((DPTXlator1BitControlled.DPT1BitControlled) dpt).getValueDPT();
252 switch (bigDecimal.intValue()) {
254 return "0 " + valueDPT.getLowerValue();
256 return "0 " + valueDPT.getUpperValue();
258 return "1 " + valueDPT.getLowerValue();
260 return "1 " + valueDPT.getUpperValue();
263 if (DPTXlator2ByteUnsigned.DPT_TIMEPERIOD_10.getID().equals(dptId)
264 || DPTXlator2ByteUnsigned.DPT_TIMEPERIOD_100.getID().equals(dptId)) {
265 return bigDecimal.divide(BigDecimal.valueOf(1000)).stripTrailingZeros().toPlainString().replace('.',
266 ((DecimalFormat) DecimalFormat.getInstance()).getDecimalFormatSymbols()
267 .getDecimalSeparator());
269 return bigDecimal.stripTrailingZeros().toPlainString();
271 int intVal = bigDecimal.intValue();
273 return "learn " + (intVal - 0x80);
275 return "activate " + intVal;
278 if ("8.010".equals(dptId)) {
279 // 8.010 has a resolution of 0.01 and will be scaled. Calimero expects locale-specific separator.
280 return bigDecimal.stripTrailingZeros().toPlainString().replace('.',
281 ((DecimalFormat) DecimalFormat.getInstance()).getDecimalFormatSymbols()
282 .getDecimalSeparator());
286 return bigDecimal.stripTrailingZeros().toPlainString();
291 * convert 0...100% to 1 byte 0..255
296 private static int convertPercentToByte(PercentType percent) {
297 return percent.toBigDecimal().multiply(BigDecimal.valueOf(255))
298 .divide(BigDecimal.valueOf(100), 0, RoundingMode.HALF_UP).intValue();