144 lines
4.7 KiB
Python
144 lines
4.7 KiB
Python
"""Climate platform for Modbus RTU Monitor."""
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from __future__ import annotations
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from typing import Any
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from homeassistant.components.climate import (
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ClimateEntity,
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ClimateEntityFeature,
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HVACMode,
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)
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from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.exceptions import HomeAssistantError
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from homeassistant.helpers.device_registry import DeviceInfo
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from homeassistant.helpers.entity_platform import AddEntitiesCallback
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from homeassistant.helpers.update_coordinator import CoordinatorEntity
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from . import ModbusRTUMonitorConfigEntry
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from .const import DOMAIN, MANUFACTURER, MODEL
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from .coordinator import ModbusRTUMonitorCoordinator
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async def async_setup_entry(
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hass: HomeAssistant,
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entry: ModbusRTUMonitorConfigEntry,
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async_add_entities: AddEntitiesCallback,
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) -> None:
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"""Set up climate entities from a config entry."""
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coordinator = entry.runtime_data
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# Track which slaves have climate entities
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added_slaves: set[int] = set()
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@callback
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def _async_add_climate_entities() -> None:
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"""Add climate entities for newly discovered slaves."""
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if coordinator.data is None:
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return
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current_slaves = set(coordinator.data.keys())
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new_slaves = current_slaves - added_slaves
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if new_slaves:
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async_add_entities(
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ModbusRTUMonitorClimate(coordinator, slave_id)
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for slave_id in new_slaves
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)
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added_slaves.update(new_slaves)
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# Subscribe to coordinator updates
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entry.async_on_unload(
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coordinator.async_add_listener(_async_add_climate_entities)
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)
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# Add entities for already discovered slaves
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_async_add_climate_entities()
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class ModbusRTUMonitorClimate(
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CoordinatorEntity[ModbusRTUMonitorCoordinator], ClimateEntity
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):
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"""Climate entity for Modbus RTU temperature monitor."""
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_attr_has_entity_name = True
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_attr_name = None # Device name will be used
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_attr_temperature_unit = UnitOfTemperature.CELSIUS
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_attr_hvac_modes = [HVACMode.HEAT] # Always on, no off mode
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_attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
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def __init__(
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self,
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coordinator: ModbusRTUMonitorCoordinator,
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slave_id: int,
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) -> None:
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"""Initialize climate entity."""
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super().__init__(coordinator)
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self._slave_id = slave_id
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self._attr_unique_id = (
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f"{coordinator.config_entry.entry_id}_{slave_id}_climate"
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)
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# Device info (groups climate + humidity sensor)
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self._attr_device_info = DeviceInfo(
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identifiers={(DOMAIN, f"{coordinator.config_entry.entry_id}_{slave_id}")},
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name=f"Modbus Slave {slave_id}",
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manufacturer=MANUFACTURER,
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model=MODEL,
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)
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# Target temperature storage (not available from passive monitoring)
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self._attr_target_temperature = 20.0 # Default
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@property
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def available(self) -> bool:
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"""Return if entity is available."""
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if self._slave_id not in self.coordinator.data:
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return False
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return self.coordinator.data[self._slave_id].available
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@property
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def current_temperature(self) -> float | None:
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"""Return current temperature from passive monitoring."""
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if self._slave_id not in self.coordinator.data:
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return None
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return self.coordinator.data[self._slave_id].temperature
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@property
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def hvac_mode(self) -> HVACMode:
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"""Return current HVAC mode."""
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# Always HEAT mode (no on/off control as per requirements)
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return HVACMode.HEAT
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async def async_set_temperature(self, **kwargs: Any) -> None:
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"""Set new target temperature and write to device."""
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if (temperature := kwargs.get(ATTR_TEMPERATURE)) is None:
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return
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# Update local target temperature
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self._attr_target_temperature = temperature
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# Write to device via hub
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try:
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await self.coordinator.hub.async_write_setpoint(
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self._slave_id,
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temperature,
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)
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except Exception as ex:
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raise HomeAssistantError(
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f"Failed to set temperature for slave {self._slave_id}"
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) from ex
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# Update state
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self.async_write_ha_state()
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async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
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"""Set HVAC mode."""
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# No on/off control - only HEAT mode supported
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if hvac_mode != HVACMode.HEAT:
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raise HomeAssistantError(
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f"HVAC mode {hvac_mode} not supported. Only HEAT mode is available."
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)
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