09_USF1000.pm: suppress inplausible readings from USF1000

git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@429 2b470e98-0d58-463d-a4d8-8e2adae1ed80

CHANGED

@@ -523,3 +523,4 @@
   - bugfix:  Fixes for Windows by Klaus
   - bugfix:  Another "rereadcfg" bugfix
   - feature: Update to the current (1.27) CUL FHT interface
+  - feature: suppress inplausible readings from USF1000

FHEM/09_USF1000.pm

@@ -101,6 +101,8 @@ USF1000_Parse($$)
   return "" if($def->{IODev} && $def->{IODev}{NAME} ne $hash->{NAME});
 
 
+  my $t= TimeNow();
+
   # Msg format:
   # 01 23 45 67 8901 2345 6789 01 23 45 67
   # 81 0c 04 .. 0101 a001 a5ce aa 00 cc xx
@@ -112,7 +114,10 @@ USF1000_Parse($$)
   my $lowbattery= (hex($cc) & 0x40 ? 1 : 0);
   my $testmode=   (hex($cc) & 0x80 ? 1 : 0);
   my $distance=   hex($xx)/100.0; # in meters
+  my $valid= (($distance>0.00) && ($distance<2.55));
 
+
+  if($valid) {
   	my $wlevel  =   $def->{HEIGHT}-($distance-$def->{OFFSET}); # water level
 
 	my $geometry= $def->{GEOMETRY};
@@ -120,7 +125,6 @@ USF1000_Parse($$)
   	my $volume;   # current volume in tank in liters
   	my $flevel;	# fill level in percent
 
-
   	if($geometry eq "cub") {
   		# cuboid
   		$volume  = $def->{LENGTH}*$def->{WIDTH}*$wlevel*1000.0;
@@ -134,7 +138,6 @@ USF1000_Parse($$)
   	$flevel  = int($volume/$capacity*100.0+0.5);
   	$volume= int($volume/10.0+0.5)*10.0;
 
-  my $t= TimeNow();
 
   	my $state= sprintf("v: %d  V: %d", $flevel, $volume);
 
@@ -150,6 +153,7 @@ USF1000_Parse($$)
   	$def->{READINGS}{level}{VAL} = $flevel;
   	$def->{READINGS}{volume}{TIME} = $t;
   	$def->{READINGS}{volume}{VAL} = $volume;
+  }
 
   my $warnings= ($lowbattery ? "Battery low" : "");
   if($testmode) {

HISTORY

@@ -417,3 +417,6 @@
 
 - Sat Jun 20 2009 (Boris)
   - 09_USF1000.pm: new module to support USF1000S devices.
+
+- Fri Aug 08 2009 (Boris)
+  - 09_USF1000.pm: suppress inplausible readings from USF1000