94 lines
2.6 KiB
Python
94 lines
2.6 KiB
Python
"""Support for Modbus Coil sensors."""
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import logging
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from typing import Optional
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import voluptuous as vol
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from homeassistant.components.binary_sensor import (
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DEVICE_CLASSES_SCHEMA,
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PLATFORM_SCHEMA,
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BinarySensorDevice,
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)
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from homeassistant.const import CONF_DEVICE_CLASS, 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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{
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vol.Required(CONF_COILS): [
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{
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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_DEVICE_CLASS): DEVICE_CLASSES_SCHEMA,
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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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}
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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(
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ModbusCoilSensor(
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hub,
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coil.get(CONF_NAME),
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coil.get(CONF_SLAVE),
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coil.get(CONF_COIL),
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coil.get(CONF_DEVICE_CLASS),
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)
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)
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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, device_class):
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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._device_class = device_class
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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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@property
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def device_class(self) -> Optional[str]:
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"""Return the device class of the sensor."""
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return self._device_class
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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(
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"No response from hub %s, slave %s, coil %s",
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self._hub.name,
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self._slave,
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self._coil,
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)
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