From 8b343b37d623daf74692b62d2ffcfc6e4bce9bd6 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Fri, 24 Mar 2017 02:42:26 +1300
Subject: Fix TAIP ACK checksum

---
 src/org/traccar/protocol/TaipProtocolDecoder.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/org/traccar/protocol/TaipProtocolDecoder.java b/src/org/traccar/protocol/TaipProtocolDecoder.java
index 24fe36220..309263cd5 100644
--- a/src/org/traccar/protocol/TaipProtocolDecoder.java
+++ b/src/org/traccar/protocol/TaipProtocolDecoder.java
@@ -182,8 +182,8 @@ public class TaipProtocolDecoder extends BaseProtocolDecoder {
         if (deviceSession != null) {
             if (sendResponse && channel != null) {
                 if (messageIndex != null) {
-                    String response = ">ACK;" + messageIndex + ";ID=" + uniqueId + ";";
-                    response += Checksum.nmea(response) + "<";
+                    String response = ">ACK;" + messageIndex + ";ID=" + uniqueId + ";*";
+                    response += String.format("%02X", Checksum.xor(response)) + "<";
                     channel.write(response);
                 } else {
                     channel.write(uniqueId);
-- 
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