diff options
| -rw-r--r-- | src/org/traccar/helper/Checksum.java | 13 | ||||
| -rw-r--r-- | src/org/traccar/protocol/MeitrackProtocol.java | 1 | ||||
| -rw-r--r-- | src/org/traccar/protocol/MeitrackProtocolEncoder.java | 21 | ||||
| -rw-r--r-- | test/org/traccar/protocol/MeitrackProtocolEncoderTest.java | 23 |
4 files changed, 50 insertions, 8 deletions
diff --git a/src/org/traccar/helper/Checksum.java b/src/org/traccar/helper/Checksum.java index e6b6cd2c8..c156e53f7 100644 --- a/src/org/traccar/helper/Checksum.java +++ b/src/org/traccar/helper/Checksum.java @@ -158,13 +158,20 @@ public final class Checksum { public static String nmea(String msg) { int checksum = 0; - byte[] bytes = msg.getBytes(Charset.defaultCharset()); - for (int i = 1; i < msg.length(); i++) { - checksum ^= bytes[i]; + for (byte b : msg.getBytes(Charset.defaultCharset())) { + checksum ^= b; } return String.format("*%02x", checksum).toUpperCase(); } + public static String sum(String msg) { + byte checksum = 0; + for (byte b : msg.getBytes(Charset.defaultCharset())) { + checksum += b; + } + return String.format("%02X", checksum).toUpperCase(); + } + public static long luhn(long imei) { long checksum = 0; long remain = imei; diff --git a/src/org/traccar/protocol/MeitrackProtocol.java b/src/org/traccar/protocol/MeitrackProtocol.java index e758e5f41..e5b5ddf2b 100644 --- a/src/org/traccar/protocol/MeitrackProtocol.java +++ b/src/org/traccar/protocol/MeitrackProtocol.java @@ -31,6 +31,7 @@ public class MeitrackProtocol extends BaseProtocol { public MeitrackProtocol() { super("meitrack"); setSupportedCommands( + Command.TYPE_POSITION_SINGLE, Command.TYPE_ENGINE_STOP, Command.TYPE_ENGINE_RESUME, Command.TYPE_ALARM_ARM, diff --git a/src/org/traccar/protocol/MeitrackProtocolEncoder.java b/src/org/traccar/protocol/MeitrackProtocolEncoder.java index 90fa5b624..381935c58 100644 --- a/src/org/traccar/protocol/MeitrackProtocolEncoder.java +++ b/src/org/traccar/protocol/MeitrackProtocolEncoder.java @@ -16,25 +16,36 @@ package org.traccar.protocol; import org.traccar.StringProtocolEncoder; +import org.traccar.helper.Checksum; import org.traccar.helper.Log; import org.traccar.model.Command; public class MeitrackProtocolEncoder extends StringProtocolEncoder { + private Object formatCommand(Command command, char dataId, String content) { + String uniqueId = getUniqueId(command.getDeviceId()); + int length = 1 + uniqueId.length() + 1 + content.length() + 5; + String result = String.format("@@%c%02d,%s,%s*", dataId, length, uniqueId, content); + result += Checksum.sum(result) + "\r\n"; + return result; + } + @Override protected Object encodeCommand(Command command) { switch (command.getType()) { + case Command.TYPE_POSITION_SINGLE: + return formatCommand(command, 'Q', "A10"); case Command.TYPE_ENGINE_STOP: - return formatCommand(command, "@@M33,{%s},C01,0,12222*00\r\n", Command.KEY_UNIQUE_ID); + return formatCommand(command, 'M', "C01,0,12222"); case Command.TYPE_ENGINE_RESUME: - return formatCommand(command, "@@M33,{%s},C01,0,02222*00\r\n", Command.KEY_UNIQUE_ID); + return formatCommand(command, 'M', "C01,0,02222"); case Command.TYPE_ALARM_ARM: - return formatCommand(command, "@@M33,{%s},C01,0,22122*00\r\n", Command.KEY_UNIQUE_ID); + return formatCommand(command, 'M', "C01,0,22122"); case Command.TYPE_ALARM_DISARM: - return formatCommand(command, "@@M33,{%s},C01,0,22022*00\r\n", Command.KEY_UNIQUE_ID); + return formatCommand(command, 'M', "C01,0,22022"); case Command.TYPE_REQUEST_PHOTO: - return formatCommand(command, "@@D46,{%s},D03,1,camera_picture.jpg*00\r\n", Command.KEY_UNIQUE_ID); + return formatCommand(command, 'D', "D03,1,camera_picture.jpg"); default: Log.warning(new UnsupportedOperationException(command.getType())); break; diff --git a/test/org/traccar/protocol/MeitrackProtocolEncoderTest.java b/test/org/traccar/protocol/MeitrackProtocolEncoderTest.java new file mode 100644 index 000000000..64812c1da --- /dev/null +++ b/test/org/traccar/protocol/MeitrackProtocolEncoderTest.java @@ -0,0 +1,23 @@ +package org.traccar.protocol; + +import org.junit.Assert; +import org.junit.Test; +import org.traccar.ProtocolTest; +import org.traccar.model.Command; + +public class MeitrackProtocolEncoderTest extends ProtocolTest { + + @Test + public void testEncode() throws Exception { + + MeitrackProtocolEncoder encoder = new MeitrackProtocolEncoder(); + + Command command = new Command(); + command.setDeviceId(1); + command.setType(Command.TYPE_POSITION_SINGLE); + + Assert.assertEquals("@@Q25,123456789012345,A10*68\r\n", encoder.encodeCommand(command)); + + } + +} |