90_at.pm: do not generate events if at is disabled (Forum #34783)

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@8169 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/FHEM/90_at.pm

@@ -113,7 +113,8 @@ at_Define($$)
     my $val = IsDisabled($name) ?
                  (AttrVal($name, "disable", undef) ? "disabled" : "inactive") :
                  ("Next: ".FmtTime($nt));
-    readingsSingleUpdate($hash, "state", $val, 1);
+    readingsSingleUpdate($hash, "state", $val,
+          !$hash->{READINGS}{state} || $hash->{READINGS}{state}{VAL} ne $val);
   }
 
   return undef;

fhem/fhem.pl

@@ -2263,7 +2263,7 @@ CommandAttr($$)
       }
     }
 
-    if($attrName eq 'disable' and $a[2] eq 'toggle') {
+    if($attrName eq 'disable' and $a[2] && $a[2] eq 'toggle') {
        $a[2] = IsDisabled($sdev) ? 0 : 1;
     }