Update weather station tile

Now with actual lux calculation when solar radiation data is available. Also includes refresh/polling capabilities

devicetypes/smartthings/smartweather-station-tile.src/smartweather-station-tile.groovy

@@ -16,12 +16,15 @@
  *
  *  Date: 2013-04-30
  */
+// for the UI
 metadata {
+	// Automatically generated. Make future change here.
 	definition (name: "SmartWeather Station Tile", namespace: "smartthings", author: "SmartThings") {
 		capability "Illuminance Measurement"
 		capability "Temperature Measurement"
 		capability "Relative Humidity Measurement"
 		capability "Sensor"
+		capability "Polling"
 
 		attribute "localSunrise", "string"
 		attribute "localSunset", "string"
@@ -214,7 +217,7 @@ def poll() {
         send(name: "localSunrise", value: localSunrise, descriptionText: "Sunrise today is at $localSunrise")
         send(name: "localSunset", value: localSunset, descriptionText: "Sunset today at is $localSunset")
 
-		send(name: "illuminance", value: estimateLux(sunriseDate, sunsetDate, weatherIcon))
+		send(name: "illuminance", value: estimateLux(obs.solarradiation, sunriseDate, sunsetDate, weatherIcon) as Integer)
 
 		// Forecast
 		def f = get("forecast")
@@ -305,8 +308,12 @@ private send(map) {
 	sendEvent(map)
 }
 
-private estimateLux(sunriseDate, sunsetDate, weatherIcon) {
+private estimateLux(solarradiation, sunriseDate, sunsetDate, weatherIcon) {
 	def lux = 0
+
+	if (solarradiation != '--') {
+		lux = solarradiation.toDouble() / 0.0079
+	} else {
 		def now = new Date().time
 		if (now > sunriseDate.time && now < sunsetDate.time) {
 			//day
@@ -348,6 +355,7 @@ private estimateLux(sunriseDate, sunsetDate, weatherIcon) {
 			//could do calculations for dusk/dawn too
 			lux = 10
 		}
+	}
 
 	lux
 }