2 files changed, 20 insertions, 11 deletions
diff --git a/src/net/sourceforge/opentracking/TrackerEventHandler.java b/src/net/sourceforge/opentracking/TrackerEventHandler.java
index 28a8c8fad..18a15480f 100644
--- a/src/net/sourceforge/opentracking/TrackerEventHandler.java
+++ b/src/net/sourceforge/opentracking/TrackerEventHandler.java
@@ -43,16 +43,20 @@ public class TrackerEventHandler extends SimpleChannelHandler {
         if (e.getMessage() instanceof Position) {
             
             Position position = (Position) e.getMessage();
-
-            System.out.println(
-                    "id: " + position.getId() +
-                    ", deviceId: " + position.getDeviceId() +
-                    ", valid: " + position.getValid() +
-                    ", time: " + position.getTime() +
-                    ", latitude: " + position.getLatitude() +
-                    ", longitude: " + position.getLongitude() +
-                    ", speed: " + position.getSpeed() +
-                    ", course: " + position.getCourse());
+            
+            if (position == null) {
+                System.out.println("null message");
+            } else {
+                System.out.println(
+                        "id: " + position.getId() +
+                        ", deviceId: " + position.getDeviceId() +
+                        ", valid: " + position.getValid() +
+                        ", time: " + position.getTime() +
+                        ", latitude: " + position.getLatitude() +
+                        ", longitude: " + position.getLongitude() +
+                        ", speed: " + position.getSpeed() +
+                        ", course: " + position.getCourse());
+            }
 
             // Write position to database
             try {
diff --git a/src/net/sourceforge/opentracking/protocol/gps103/Gps103ProtocolDecoder.java b/src/net/sourceforge/opentracking/protocol/gps103/Gps103ProtocolDecoder.java
index 30fdcb06f..92d54b551 100644
--- a/src/net/sourceforge/opentracking/protocol/gps103/Gps103ProtocolDecoder.java
+++ b/src/net/sourceforge/opentracking/protocol/gps103/Gps103ProtocolDecoder.java
@@ -80,10 +80,15 @@ public class Gps103ProtocolDecoder extends OneToOneDecoder {
 
         String sentence = (String) msg;
 
-        // Send response
+        // Send response #1
         if (sentence.contains("##")) {
             channel.write("LOAD");
         }
+        
+        // Send response #2
+        if (sentence.length() == 15 && Character.isDigit(sentence.charAt(0))) {
+            channel.write("ON");
+        }
 
         // Parse message
         Matcher parser = pattern.matcher(sentence);