Update powerwall.sh

powerwall.sh

@@ -18,9 +18,12 @@ GETTEMP(){
 	mqtt_message=`mosquitto_sub -h 10.10.1.180 -t tasmota/discovery/${SENSOR_MQTTID[$1]}/sensors -u homeassistant -P 12home34assistant56 -C 1`
 	echo $mqtt_message
 	echo $mqtt_message | cut -d':' -f 7 | cut -d',' -f 1 | read temp_c
-	temp_f=`echo "scale=2; $temp*1.8 + 32" | bc`
-	
-	echo "$temp_c -> $temp_f"
+	if [ "$team_c" != "null" ]; then
+		temp_f=`echo "scale=2; $temp*1.8 + 32" | bc`
+		echo "$temp_c -> $temp_f"
+	else
+		echo "No temperature"
+	fi
 }