From 40fa4463de411a1092213a4c7cc9239982e8aef2 Mon Sep 17 00:00:00 2001
From: Aaron Bach <bachya1208@gmail.com>
Date: Fri, 21 Jun 2019 23:12:16 -0600
Subject: [PATCH] Change Ambient solar radiation units to lx (#24690)

---
 homeassistant/components/ambient_station/__init__.py |  2 +-
 homeassistant/components/ambient_station/sensor.py   | 12 ++++++++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/homeassistant/components/ambient_station/__init__.py b/homeassistant/components/ambient_station/__init__.py
index 44cc7655498bc0..40487040474377 100644
--- a/homeassistant/components/ambient_station/__init__.py
+++ b/homeassistant/components/ambient_station/__init__.py
@@ -183,7 +183,7 @@
     TYPE_SOILTEMP7F: ('Soil Temp 7', '°F', TYPE_SENSOR, 'temperature'),
     TYPE_SOILTEMP8F: ('Soil Temp 8', '°F', TYPE_SENSOR, 'temperature'),
     TYPE_SOILTEMP9F: ('Soil Temp 9', '°F', TYPE_SENSOR, 'temperature'),
-    TYPE_SOLARRADIATION: ('Solar Rad', 'W/m^2', TYPE_SENSOR, None),
+    TYPE_SOLARRADIATION: ('Solar Rad', 'lx', TYPE_SENSOR, 'illuminance'),
     TYPE_TEMP10F: ('Temp 10', '°F', TYPE_SENSOR, 'temperature'),
     TYPE_TEMP1F: ('Temp 1', '°F', TYPE_SENSOR, 'temperature'),
     TYPE_TEMP2F: ('Temp 2', '°F', TYPE_SENSOR, 'temperature'),
diff --git a/homeassistant/components/ambient_station/sensor.py b/homeassistant/components/ambient_station/sensor.py
index 8d103a22a5e3af..dcab3d7e50edc6 100644
--- a/homeassistant/components/ambient_station/sensor.py
+++ b/homeassistant/components/ambient_station/sensor.py
@@ -3,7 +3,7 @@
 
 from homeassistant.const import ATTR_NAME
 
-from . import SENSOR_TYPES, AmbientWeatherEntity
+from . import SENSOR_TYPES, TYPE_SOLARRADIATION, AmbientWeatherEntity
 from .const import ATTR_LAST_DATA, DATA_CLIENT, DOMAIN, TYPE_SENSOR
 
 _LOGGER = logging.getLogger(__name__)
@@ -61,5 +61,13 @@ def unit_of_measurement(self):
 
     async def async_update(self):
         """Fetch new state data for the sensor."""
-        self._state = self._ambient.stations[
+        new_state = self._ambient.stations[
             self._mac_address][ATTR_LAST_DATA].get(self._sensor_type)
+
+        if self._sensor_type == TYPE_SOLARRADIATION:
+            # Ambient's units for solar radiation (illuminance) are
+            # W/m^2; since those aren't commonly used in the HASS
+            # world, transform them to lx:
+            self._state = round(float(new_state)/0.0079)
+        else:
+            self._state = new_state