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-rw-r--r--src/org/traccar/protocol/MxtProtocolDecoder.java16
1 files changed, 14 insertions, 2 deletions
diff --git a/src/org/traccar/protocol/MxtProtocolDecoder.java b/src/org/traccar/protocol/MxtProtocolDecoder.java
index c9eba5bed..f6c471b19 100644
--- a/src/org/traccar/protocol/MxtProtocolDecoder.java
+++ b/src/org/traccar/protocol/MxtProtocolDecoder.java
@@ -27,6 +27,7 @@ import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
+import java.nio.ByteOrder;
public class MxtProtocolDecoder extends BaseProtocolDecoder {
@@ -40,16 +41,27 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
private static void sendResponse(Channel channel, int device, long id, int crc) {
if (channel != null) {
- ChannelBuffer response = ChannelBuffers.dynamicBuffer();
+ ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 0);
response.writeByte(0x01); // header
response.writeByte(device);
response.writeByte(MSG_ACK);
response.writeInt((int) id);
response.writeShort(crc);
response.writeShort(Checksum.crc16(
- Checksum.CRC16_CCITT_FALSE, response.toByteBuffer(0, response.readableBytes())));
+ Checksum.CRC16_XMODEM, response.toByteBuffer(1, response.readableBytes() - 1)));
response.writeByte(0x04); // ending
channel.write(response);
+
+ ChannelBuffer encoded = ChannelBuffers.dynamicBuffer();
+ while (response.readable()) {
+ int b = response.readByte();
+ if (response.readerIndex() != 1 && response.readableBytes() != 0
+ && (b == 0x01 || b == 0x04 || b == 0x10 || b == 0x11 || b == 0x13)) {
+ encoded.writeByte(0x10);
+ b += 0x20;
+ }
+ response.writeByte(b);
+ }
}
}