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authorAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
commit59416923dcb3a756eaf532cc4259f2f6625c0762 (patch)
tree9082dae6616deac8fda432b7bfd80e4a52b6d9dc /src/main/java/org/traccar/helper/ObdDecoder.java
parent79a129dd6327d932133d6b9a50190d3f4927bff9 (diff)
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Convert project to gradle
Diffstat (limited to 'src/main/java/org/traccar/helper/ObdDecoder.java')
-rw-r--r--src/main/java/org/traccar/helper/ObdDecoder.java105
1 files changed, 105 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/helper/ObdDecoder.java b/src/main/java/org/traccar/helper/ObdDecoder.java
new file mode 100644
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+++ b/src/main/java/org/traccar/helper/ObdDecoder.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.helper;
+
+import org.traccar.model.Position;
+
+import java.util.AbstractMap;
+import java.util.Map;
+
+public final class ObdDecoder {
+
+ private ObdDecoder() {
+ }
+
+ private static final int MODE_CURRENT = 0x01;
+ private static final int MODE_FREEZE_FRAME = 0x02;
+ private static final int MODE_CODES = 0x03;
+
+ public static Map.Entry<String, Object> decode(int mode, String value) {
+ switch (mode) {
+ case MODE_CURRENT:
+ case MODE_FREEZE_FRAME:
+ return decodeData(
+ Integer.parseInt(value.substring(0, 2), 16),
+ Integer.parseInt(value.substring(2), 16), true);
+ case MODE_CODES:
+ return decodeCodes(value);
+ default:
+ return null;
+ }
+ }
+
+ private static Map.Entry<String, Object> createEntry(String key, Object value) {
+ return new AbstractMap.SimpleEntry<>(key, value);
+ }
+
+ public static Map.Entry<String, Object> decodeCodes(String value) {
+ StringBuilder codes = new StringBuilder();
+ for (int i = 0; i < value.length() / 4; i++) {
+ int numValue = Integer.parseInt(value.substring(i * 4, (i + 1) * 4), 16);
+ codes.append(' ');
+ switch (numValue >> 14) {
+ case 1:
+ codes.append('C');
+ break;
+ case 2:
+ codes.append('B');
+ break;
+ case 3:
+ codes.append('U');
+ break;
+ default:
+ codes.append('P');
+ break;
+ }
+ codes.append(String.format("%04X", numValue & 0x3FFF));
+ }
+ if (codes.length() > 0) {
+ return createEntry(Position.KEY_DTCS, codes.toString().trim());
+ } else {
+ return null;
+ }
+ }
+
+ public static Map.Entry<String, Object> decodeData(int pid, int value, boolean convert) {
+ switch (pid) {
+ case 0x04:
+ return createEntry(Position.KEY_ENGINE_LOAD, convert ? value * 100 / 255 : value);
+ case 0x05:
+ return createEntry(Position.KEY_COOLANT_TEMP, convert ? value - 40 : value);
+ case 0x0B:
+ return createEntry("mapIntake", value);
+ case 0x0C:
+ return createEntry(Position.KEY_RPM, convert ? value / 4 : value);
+ case 0x0D:
+ return createEntry(Position.KEY_OBD_SPEED, value);
+ case 0x0F:
+ return createEntry("intakeTemp", convert ? value - 40 : value);
+ case 0x11:
+ return createEntry(Position.KEY_THROTTLE, convert ? value * 100 / 255 : value);
+ case 0x21:
+ return createEntry("milDistance", value);
+ case 0x2F:
+ return createEntry(Position.KEY_FUEL_LEVEL, convert ? value * 100 / 255 : value);
+ case 0x31:
+ return createEntry("clearedDistance", value);
+ default:
+ return null;
+ }
+ }
+
+}