From 0b04bcb07564b1c2d4764934dd1f5ba5fc2de3fd Mon Sep 17 00:00:00 2001
From: kaihs <>
Date: Wed, 8 Nov 2017 19:27:50 +0000
Subject: [PATCH] 36_WMBUS: better error message if received data is too short

git-svn-id: https://svn.fhem.de/fhem/trunk@15410 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/36_WMBUS.pm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fhem/FHEM/36_WMBUS.pm b/fhem/FHEM/36_WMBUS.pm
index 2f3e18e43..9b8bb63e8 100644
--- a/fhem/FHEM/36_WMBUS.pm
+++ b/fhem/FHEM/36_WMBUS.pm
@@ -266,6 +266,9 @@ WMBUS_Parse($$)
 		} else {
 			# error
 			Log3 $name, 2, "WMBUS Error during LinkLayer parse:" . $mb->{errormsg};
+			if ($mb->{errorcode} == WMBus::ERR_MSG_TOO_SHORT && $hash->{MessageEncoding} eq 'CUL') {
+        Log3 $name, 2, "Please make sure that TTY_BUFSIZE in culfw is at least two times the message length + 1";
+      }
 			return undef;
 		}
   } else {