core/homeassistant/components/cpuspeed/sensor.py

85 lines
2.2 KiB
Python

"""Support for displaying the current CPU speed."""
import logging
from cpuinfo import cpuinfo
import voluptuous as vol
from homeassistant.components.sensor import PLATFORM_SCHEMA
from homeassistant.const import CONF_NAME
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.entity import Entity
_LOGGER = logging.getLogger(__name__)
ATTR_BRAND = "Brand"
ATTR_HZ = "GHz Advertised"
ATTR_ARCH = "arch"
HZ_ACTUAL_RAW = "hz_actual_raw"
HZ_ADVERTISED_RAW = "hz_advertised_raw"
DEFAULT_NAME = "CPU speed"
ICON = "mdi:pulse"
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
{vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string}
)
def setup_platform(hass, config, add_entities, discovery_info=None):
"""Set up the CPU speed sensor."""
name = config.get(CONF_NAME)
add_entities([CpuSpeedSensor(name)], True)
class CpuSpeedSensor(Entity):
"""Representation of a CPU sensor."""
def __init__(self, name):
"""Initialize the sensor."""
self._name = name
self._state = None
self.info = None
self._unit_of_measurement = "GHz"
@property
def name(self):
"""Return the name of the sensor."""
return self._name
@property
def state(self):
"""Return the state of the sensor."""
return self._state
@property
def unit_of_measurement(self):
"""Return the unit the value is expressed in."""
return self._unit_of_measurement
@property
def device_state_attributes(self):
"""Return the state attributes."""
if self.info is not None:
attrs = {ATTR_ARCH: self.info["arch"], ATTR_BRAND: self.info["brand"]}
if HZ_ADVERTISED_RAW in self.info:
attrs[ATTR_HZ] = round(self.info[HZ_ADVERTISED_RAW][0] / 10 ** 9, 2)
return attrs
@property
def icon(self):
"""Return the icon to use in the frontend, if any."""
return ICON
def update(self):
"""Get the latest data and updates the state."""
self.info = cpuinfo.get_cpu_info()
if HZ_ACTUAL_RAW in self.info:
self._state = round(float(self.info[HZ_ACTUAL_RAW][0]) / 10 ** 9, 2)
else:
self._state = None