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@ -3,7 +3,11 @@ package com.rusefi.can.reader;
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import com.rusefi.can.CANPacket;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Stream;
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public interface CANLineReader {
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static byte[] readHexArray(String[] tokens, int start, int size) {
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@ -15,5 +19,15 @@ public interface CANLineReader {
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CANPacket readLine(String line);
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List<CANPacket> readFile(String fileName) throws IOException;
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default List<CANPacket> readFile(String fileName) throws IOException {
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List<CANPacket> result = new ArrayList<>();
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try (Stream<String> stream = Files.lines(Paths.get(fileName))) {
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stream.forEach(s -> {
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CANPacket packet = readLine(s);
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if (packet != null)
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result.add(packet);
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});
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return result;
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}
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}
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}
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@ -38,4 +38,15 @@ public class DbcField {
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", mult=" + mult +
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'}';
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}
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public static int getBitIndex(byte[] data, int bitIndex, int bitWidth) {
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int byteIndex = bitIndex >> 3;
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int shift = bitIndex - byteIndex * 8;
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int value = data[byteIndex];
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if (shift + bitWidth > 8) {
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value = value + data[1 + byteIndex] * 256;
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}
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int mask = (1 << bitWidth) - 1;
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return (value >> shift) & mask;
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}
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}
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@ -1,7 +1,5 @@
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package com.rusefi.can.reader.dbc;
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import com.rusefi.can.reader.dbc.DbcField;
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import java.util.ArrayList;
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import java.util.List;
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@ -0,0 +1,23 @@
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package com.rusefi.can.reader.impl;
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import com.rusefi.can.CANPacket;
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import com.rusefi.can.reader.CANLineReader;
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public class PcanTrcReader implements CANLineReader {
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@Override
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public CANPacket readLine(String line) {
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line = line.trim();
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if (line.startsWith(";"))
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return null;
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String[] tokens = line.split("\\s+");
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double timeStamp = Double.parseDouble(tokens[1]);
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int sid = Integer.parseInt(tokens[3], 16);
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int size = Integer.parseInt(tokens[4]);
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byte[] data = CANLineReader.readHexArray(tokens, 5, size);
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return new CANPacket(timeStamp, sid, data);
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}
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}
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@ -1,5 +1,7 @@
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package com.rusefi.can.reader.impl;
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import com.rusefi.can.CANPacket;
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import com.rusefi.can.reader.dbc.DbcField;
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import com.rusefi.can.reader.dbc.DbcFile;
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import org.junit.Test;
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@ -8,17 +10,32 @@ import java.io.IOException;
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import java.io.StringReader;
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import static com.rusefi.can.reader.impl.ParseDBC.VAG_MOTOR_1;
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import static org.junit.Assert.assertEquals;
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public class GetValueFromTrc {
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@Test
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public void test() throws IOException {
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BufferedReader reader = new BufferedReader(new StringReader(VAG_MOTOR_1));
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DbcFile dbc = new DbcFile();
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dbc.read(reader);
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{
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BufferedReader reader = new BufferedReader(new StringReader(VAG_MOTOR_1));
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dbc.read(reader);
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}
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String trcLine = " 3769) 2117.7 Rx 0280 8 01 1D DF 12 1E 00 1A 1E ";
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PcanTrcReader reader = new PcanTrcReader();
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CANPacket packet = reader.readLine(trcLine);
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assertEquals(8, packet.getData().length);
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assertEquals(640, packet.getId());
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assertEquals(0xDF1D, DbcField.getBitIndex(packet.getData(), 8, 16));
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assertEquals(1, DbcField.getBitIndex(packet.getData(), 0, 3));
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assertEquals(0x1D, DbcField.getBitIndex(packet.getData(), 8, 8));
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assertEquals(13 , DbcField.getBitIndex(packet.getData(), 8, 4));
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System.out.println(packet);
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}
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}
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