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sensor.envirophat: do not set up platform if hardware is not attached (#7438)

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* sensor.envirophat: do not set up platform if hardware is not attached

Fixes comment from:
https://github.com/home-assistant/home-assistant/pull/7427#discussion_r114703904

* Fix update logic.
This commit is contained in:
Gergely Imreh 2017-05-10 05:29:38 +01:00 committed by Paulus Schoutsen
parent f4915ddb0b
commit 1312ee0f7d
1 changed files with 19 additions and 17 deletions
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36
homeassistant/components/sensor/envirophat.py
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@ -54,7 +54,13 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up the Sense HAT sensor platform."""
data = EnvirophatData(config.get(CONF_USE_LEDS))
try:
import envirophat
except OSError:
_LOGGER.error("No Enviro pHAT was found.")
return False
data = EnvirophatData(envirophat, config.get(CONF_USE_LEDS))
dev = []
for variable in config[CONF_DISPLAY_OPTIONS]:
@ -97,9 +103,6 @@ class EnvirophatSensor(Entity):
def update(self):
"""Get the latest data and updates the states."""
self.data.update()
if not self.data.light:
_LOGGER.error("Didn't receive data")
return
if self.type == 'light':
self._state = self.data.light
@ -138,8 +141,9 @@ class EnvirophatSensor(Entity):
class EnvirophatData(object):
"""Get the latest data and update."""
def __init__(self, use_leds):
def __init__(self, envirophat, use_leds):
"""Initialize the data object."""
self.envirophat = envirophat
self.use_leds = use_leds
# sensors readings
self.light = None
@ -162,34 +166,32 @@ class EnvirophatData(object):
@Throttle(MIN_TIME_BETWEEN_UPDATES)
def update(self):
"""Get the latest data from Enviro pHAT."""
from envirophat import analog, leds, light, motion, weather
# Light sensor reading: 16-bit integer
self.light = light.light()
self.light = self.envirophat.light.light()
if self.use_leds:
# pylint: disable=no-value-for-parameter
leds.on()
self.envirophat.leds.on()
# the three color values scaled agains the overall light, 0-255
self.light_red, self.light_green, self.light_blue = light.rgb()
self.light_red, self.light_green, self.light_blue = \
self.envirophat.light.rgb()
if self.use_leds:
# pylint: disable=no-value-for-parameter
leds.off()
self.envirophat.leds.off()
# accelerometer readings in G
self.accelerometer_x, self.accelerometer_y, self.accelerometer_z = \
motion.accelerometer()
self.envirophat.motion.accelerometer()
# raw magnetometer reading
self.magnetometer_x, self.magnetometer_y, self.magnetometer_z = \
motion.magnetometer()
self.envirophat.motion.magnetometer()
# temperature resolution of BMP280 sensor: 0.01°C
self.temperature = round(weather.temperature(), 2)
self.temperature = round(self.envirophat.weather.temperature(), 2)
# pressure resolution of BMP280 sensor: 0.16 Pa, rounding to 0.1 Pa
# with conversion to 100 Pa = 1 hPa
self.pressure = round(weather.pressure() / 100.0, 3)
self.pressure = round(self.envirophat.weather.pressure() / 100.0, 3)
# Voltage sensor, reading between 0-3.3V
self.voltage_0, self.voltage_1, self.voltage_2, self.voltage_3 = \
analog.read_all()
self.envirophat.analog.read_all()