82 lines
2.3 KiB
Python
82 lines
2.3 KiB
Python
"""
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Support for Modbus switches.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/switch.modbus/
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"""
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import logging
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import voluptuous as vol
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import homeassistant.components.modbus as modbus
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from homeassistant.const import CONF_NAME
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from homeassistant.helpers.entity import ToggleEntity
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from homeassistant.helpers import config_validation as cv
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from homeassistant.components.sensor import PLATFORM_SCHEMA
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_LOGGER = logging.getLogger(__name__)
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DEPENDENCIES = ['modbus']
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CONF_COIL = "coil"
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CONF_COILS = "coils"
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CONF_SLAVE = "slave"
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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_SLAVE): cv.positive_int,
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}]
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})
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Read configuration and create Modbus devices."""
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switches = []
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for coil in config.get("coils"):
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switches.append(ModbusCoilSwitch(
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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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add_devices(switches)
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class ModbusCoilSwitch(ToggleEntity):
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"""Representation of a Modbus switch."""
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# pylint: disable=too-many-arguments
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def __init__(self, name, slave, coil):
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"""Initialize the switch."""
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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._is_on = None
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@property
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def is_on(self):
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"""Return true if switch is on."""
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return self._is_on
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@property
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def name(self):
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"""Return the name of the switch."""
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return self._name
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def turn_on(self, **kwargs):
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"""Set switch on."""
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modbus.HUB.write_coil(self._slave, self._coil, True)
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def turn_off(self, **kwargs):
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"""Set switch off."""
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modbus.HUB.write_coil(self._slave, self._coil, False)
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def update(self):
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"""Update the state of the switch."""
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result = modbus.HUB.read_coils(self._slave, self._coil, 1)
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if not result:
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_LOGGER.error(
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'No response from modbus slave %s coil %s',
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self._slave,
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self._coil)
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return
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self._is_on = bool(result.bits[0])
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