[incubator-plc4x] 03/06: added unknown tdpu code

[jmclean]

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jmclean pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-plc4x.git

commit 74f4140e1092bb8f7aab1ae98d3bf7fb8d7c0825
Author: Justin Mclean <jmcl...@apache.org>
AuthorDate: Sun Jan 14 09:59:07 2018 +1100

    added unknown tdpu code
---
 .../org/apache/plc4x/java/isotp/netty/model/types/TpduCode.java   | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git 
a/plc4j/protocols/s7/src/main/java/org/apache/plc4x/java/isotp/netty/model/types/TpduCode.java
 
b/plc4j/protocols/s7/src/main/java/org/apache/plc4x/java/isotp/netty/model/types/TpduCode.java
index 4193fef..2a568ee 100644
--- 
a/plc4j/protocols/s7/src/main/java/org/apache/plc4x/java/isotp/netty/model/types/TpduCode.java
+++ 
b/plc4j/protocols/s7/src/main/java/org/apache/plc4x/java/isotp/netty/model/types/TpduCode.java
@@ -31,7 +31,8 @@ public enum TpduCode {
     EXPEDITED_DATA((byte) 0x10),
     EXPEDITED_DATA_ACKNOWLEDGEMENT((byte) 0x20),
     REJECT((byte) 0x50),
-    TPDU_ERROR((byte) 0x70);
+    TPDU_ERROR((byte) 0x70),
+    TPDU_UNKNOWN((byte) 0xFF);
 
     private static Map<Byte, TpduCode> map = null;
     
@@ -52,7 +53,10 @@ public enum TpduCode {
                 map.put(tpduCode.code, tpduCode);
             }
         }
-        return map.get(code);
+        if (map.containsKey(code)) {
+            return map.get(code);
+        }
+        return TpduCode.TPDU_UNKNOWN;
     }
 
 }

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