From 53e6569fff7e43237b14d7aea90cdcbbb6ea7a8b Mon Sep 17 00:00:00 2001
From: borisneubert <>
Date: Thu, 3 Jan 2013 18:22:14 +0000
Subject: [PATCH] suppress updating readings with undefined value

git-svn-id: https://svn.fhem.de/fhem/trunk@2420 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/11_OWDevice.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fhem/FHEM/11_OWDevice.pm b/fhem/FHEM/11_OWDevice.pm
index 61579b659..80e278241 100644
--- a/fhem/FHEM/11_OWDevice.pm
+++ b/fhem/FHEM/11_OWDevice.pm
@@ -167,6 +167,7 @@ OWDevice_ReadValue($$) {
         
         my $address= $hash->{fhem}{address};
         my $value= OWDevice_ReadFromServer($hash, "/$address/$reading");
+        #Debug "/$address/$reading => $value";  
         if(defined($value)) {
           $value= trim($value) if(AttrVal($hash,"trimvalues",1));
           my @getters= @{$hash->{fhem}{getters}};
@@ -201,7 +202,7 @@ OWDevice_UpdateValues($) {
           readingsBeginUpdate($hash);
           foreach my $reading (@polls) {
             my $value= OWDevice_ReadValue($hash,$reading);
-            readingsBulkUpdate($hash,$reading,$value);
+            readingsBulkUpdate($hash,$reading,$value) if(defined($value));
           }
           readingsEndUpdate($hash,1);
         }