69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
"""Support for Modbus Coil sensors."""
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import logging
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import voluptuous as vol
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from homeassistant.components.binary_sensor import BinarySensorDevice
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from homeassistant.components.sensor import PLATFORM_SCHEMA
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from homeassistant.const import CONF_NAME, CONF_SLAVE
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from homeassistant.helpers import config_validation as cv
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from . import CONF_HUB, DEFAULT_HUB, DOMAIN as MODBUS_DOMAIN
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_LOGGER = logging.getLogger(__name__)
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CONF_COIL = 'coil'
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CONF_COILS = 'coils'
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_COILS): [{
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vol.Required(CONF_COIL): cv.positive_int,
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vol.Required(CONF_NAME): cv.string,
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vol.Optional(CONF_HUB, default=DEFAULT_HUB): cv.string,
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vol.Optional(CONF_SLAVE): cv.positive_int,
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}]
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})
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def setup_platform(hass, config, add_entities, discovery_info=None):
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"""Set up the Modbus binary sensors."""
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sensors = []
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for coil in config.get(CONF_COILS):
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hub = hass.data[MODBUS_DOMAIN][coil.get(CONF_HUB)]
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sensors.append(ModbusCoilSensor(
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hub, coil.get(CONF_NAME), coil.get(CONF_SLAVE),
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coil.get(CONF_COIL)))
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add_entities(sensors)
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class ModbusCoilSensor(BinarySensorDevice):
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"""Modbus coil sensor."""
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def __init__(self, hub, name, slave, coil):
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"""Initialize the Modbus coil sensor."""
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self._hub = hub
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self._name = name
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self._slave = int(slave) if slave else None
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self._coil = int(coil)
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self._value = None
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@property
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def name(self):
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"""Return the name of the sensor."""
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return self._name
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@property
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def is_on(self):
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"""Return the state of the sensor."""
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return self._value
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def update(self):
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"""Update the state of the sensor."""
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result = self._hub.read_coils(self._slave, self._coil, 1)
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try:
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self._value = result.bits[0]
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except AttributeError:
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_LOGGER.error("No response from hub %s, slave %s, coil %s",
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self._hub.name, self._slave, self._coil)
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