305 lines
9.1 KiB
Python
305 lines
9.1 KiB
Python
"""
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Support for ZigBee devices.
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For more details about this component, please refer to the documentation at
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https://home-assistant.io/components/zigbee/
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"""
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import logging
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from binascii import hexlify, unhexlify
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from homeassistant.const import EVENT_HOMEASSISTANT_STOP
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from homeassistant.core import JobPriority
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from homeassistant.helpers.entity import Entity
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DOMAIN = "zigbee"
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REQUIREMENTS = ("xbee-helper==0.0.6",)
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CONF_DEVICE = "device"
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CONF_BAUD = "baud"
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DEFAULT_DEVICE = "/dev/ttyUSB0"
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DEFAULT_BAUD = 9600
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DEFAULT_ADC_MAX_VOLTS = 1.2
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# Copied from xbee_helper during setup()
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GPIO_DIGITAL_OUTPUT_LOW = None
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GPIO_DIGITAL_OUTPUT_HIGH = None
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ADC_PERCENTAGE = None
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ZIGBEE_EXCEPTION = None
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ZIGBEE_TX_FAILURE = None
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DEVICE = None
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_LOGGER = logging.getLogger(__name__)
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def setup(hass, config):
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"""Setup the connection to the ZigBee device."""
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global DEVICE
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global GPIO_DIGITAL_OUTPUT_LOW
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global GPIO_DIGITAL_OUTPUT_HIGH
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global ADC_PERCENTAGE
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global ZIGBEE_EXCEPTION
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global ZIGBEE_TX_FAILURE
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import xbee_helper.const as xb_const
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from xbee_helper import ZigBee
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from xbee_helper.exceptions import ZigBeeException, ZigBeeTxFailure
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from serial import Serial, SerialException
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GPIO_DIGITAL_OUTPUT_LOW = xb_const.GPIO_DIGITAL_OUTPUT_LOW
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GPIO_DIGITAL_OUTPUT_HIGH = xb_const.GPIO_DIGITAL_OUTPUT_HIGH
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ADC_PERCENTAGE = xb_const.ADC_PERCENTAGE
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ZIGBEE_EXCEPTION = ZigBeeException
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ZIGBEE_TX_FAILURE = ZigBeeTxFailure
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usb_device = config[DOMAIN].get(CONF_DEVICE, DEFAULT_DEVICE)
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baud = int(config[DOMAIN].get(CONF_BAUD, DEFAULT_BAUD))
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try:
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ser = Serial(usb_device, baud)
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except SerialException as exc:
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_LOGGER.exception("Unable to open serial port for ZigBee: %s", exc)
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return False
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DEVICE = ZigBee(ser)
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hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, close_serial_port)
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return True
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def close_serial_port(*args):
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"""Close the serial port we're using to communicate with the ZigBee."""
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DEVICE.zb.serial.close()
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class ZigBeeConfig(object):
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"""Handle the fetching of configuration from the config file."""
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def __init__(self, config):
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"""Initialize the configuration."""
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self._config = config
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self._should_poll = config.get("poll", True)
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@property
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def name(self):
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"""The name given to the entity."""
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return self._config["name"]
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@property
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def address(self):
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"""The address of the device.
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If an address has been provided, unhexlify it, otherwise return None
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as we're talking to our local ZigBee device.
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"""
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address = self._config.get("address")
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if address is not None:
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address = unhexlify(address)
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return address
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@property
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def should_poll(self):
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"""No polling needed."""
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return self._should_poll
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class ZigBeePinConfig(ZigBeeConfig):
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"""Handle the fetching of configuration from the config file."""
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@property
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def pin(self):
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"""The GPIO pin number."""
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return self._config["pin"]
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class ZigBeeDigitalPinConfig(ZigBeePinConfig):
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"""Handle the fetching of configuration from the config file."""
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def __init__(self, config):
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"""Initialize the configuration."""
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super(ZigBeeDigitalPinConfig, self).__init__(config)
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self._bool2state, self._state2bool = self.boolean_maps
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@property
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def boolean_maps(self):
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"""Create dicts to map booleans to pin high/low and vice versa.
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Depends on the config item "on_state" which should be set to "low"
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or "high".
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"""
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if self._config.get("on_state", "").lower() == "low":
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bool2state = {
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True: GPIO_DIGITAL_OUTPUT_LOW,
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False: GPIO_DIGITAL_OUTPUT_HIGH
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}
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else:
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bool2state = {
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True: GPIO_DIGITAL_OUTPUT_HIGH,
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False: GPIO_DIGITAL_OUTPUT_LOW
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}
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state2bool = {v: k for k, v in bool2state.items()}
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return bool2state, state2bool
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@property
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def bool2state(self):
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"""A dictionary mapping booleans to GPIOSetting objects.
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For the translation of on/off as being pin high or low.
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"""
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return self._bool2state
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@property
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def state2bool(self):
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"""A dictionary mapping GPIOSetting objects to booleans.
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For the translation of pin high/low as being on or off.
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"""
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return self._state2bool
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# Create an alias so that ZigBeeDigitalOutConfig has a logical opposite.
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ZigBeeDigitalInConfig = ZigBeeDigitalPinConfig
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class ZigBeeDigitalOutConfig(ZigBeeDigitalPinConfig):
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"""A subclass of ZigBeeDigitalPinConfig.
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Set _should_poll to default as False instead of True. The value will
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still be overridden by the presence of a 'poll' config entry.
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"""
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def __init__(self, config):
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"""Initialize the ZigBee Digital out."""
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super(ZigBeeDigitalOutConfig, self).__init__(config)
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self._should_poll = config.get("poll", False)
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class ZigBeeAnalogInConfig(ZigBeePinConfig):
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"""Representation of a ZigBee GPIO pin set to analog in."""
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@property
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def max_voltage(self):
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"""The voltage at which the ADC will report its highest value."""
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return float(self._config.get("max_volts", DEFAULT_ADC_MAX_VOLTS))
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class ZigBeeDigitalIn(Entity):
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"""Representation of a GPIO pin configured as a digital input."""
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def __init__(self, hass, config):
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"""Initialize the device."""
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self._config = config
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self._state = False
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# Get initial state
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hass.pool.add_job(
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JobPriority.EVENT_STATE, (self.update_ha_state, True))
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@property
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def name(self):
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"""Return the name of the input."""
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return self._config.name
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@property
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def should_poll(self):
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"""Return the state of the polling, if needed."""
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return self._config.should_poll
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@property
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def is_on(self):
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"""Return True if the Entity is on, else False."""
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return self._state
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def update(self):
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"""Ask the ZigBee device what its output is set to."""
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try:
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pin_state = DEVICE.get_gpio_pin(
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self._config.pin,
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self._config.address)
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except ZIGBEE_TX_FAILURE:
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_LOGGER.warning(
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"Transmission failure when attempting to get sample from "
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"ZigBee device at address: %s", hexlify(self._config.address))
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return
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except ZIGBEE_EXCEPTION as exc:
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_LOGGER.exception(
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"Unable to get sample from ZigBee device: %s", exc)
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return
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self._state = self._config.state2bool[pin_state]
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class ZigBeeDigitalOut(ZigBeeDigitalIn):
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"""Representation of a GPIO pin configured as a digital input."""
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def _set_state(self, state):
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"""Initialize the ZigBee digital out device."""
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try:
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DEVICE.set_gpio_pin(
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self._config.pin,
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self._config.bool2state[state],
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self._config.address)
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except ZIGBEE_TX_FAILURE:
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_LOGGER.warning(
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"Transmission failure when attempting to set output pin on "
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"ZigBee device at address: %s", hexlify(self._config.address))
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return
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except ZIGBEE_EXCEPTION as exc:
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_LOGGER.exception(
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"Unable to set digital pin on ZigBee device: %s", exc)
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return
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self._state = state
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if not self.should_poll:
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self.update_ha_state()
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def turn_on(self, **kwargs):
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"""Set the digital output to its 'on' state."""
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self._set_state(True)
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def turn_off(self, **kwargs):
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"""Set the digital output to its 'off' state."""
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self._set_state(False)
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class ZigBeeAnalogIn(Entity):
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"""Representation of a GPIO pin configured as an analog input."""
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def __init__(self, hass, config):
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"""Initialize the ZigBee analog in device."""
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self._config = config
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self._value = None
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# Get initial state
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hass.pool.add_job(
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JobPriority.EVENT_STATE, (self.update_ha_state, True))
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@property
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def name(self):
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"""The name of the input."""
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return self._config.name
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@property
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def should_poll(self):
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"""The state of the polling, if needed."""
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return self._config.should_poll
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@property
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def state(self):
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"""Return the state of the entity."""
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return self._value
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@property
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def unit_of_measurement(self):
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"""Return the unit this state is expressed in."""
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return "%"
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def update(self):
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"""Get the latest reading from the ADC."""
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try:
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self._value = DEVICE.read_analog_pin(
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self._config.pin,
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self._config.max_voltage,
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self._config.address,
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ADC_PERCENTAGE)
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except ZIGBEE_TX_FAILURE:
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_LOGGER.warning(
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"Transmission failure when attempting to get sample from "
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"ZigBee device at address: %s", hexlify(self._config.address))
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except ZIGBEE_EXCEPTION as exc:
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_LOGGER.exception(
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"Unable to get sample from ZigBee device: %s", exc)
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