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https://github.com/home-assistant/core
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6be0bcceff
* Updated MCP23017 component to use latest adafruit-blinka v-3.9.0 and Adafruit_CircuitPython_MCP230xx v-2.2.2 * Added updated dependencies to requirements_all.txt
89 lines
2.6 KiB
Python
89 lines
2.6 KiB
Python
"""Support for binary sensor using I2C MCP23017 chip."""
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import logging
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from adafruit_mcp230xx.mcp23017 import MCP23017 # pylint: disable=import-error
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import board # pylint: disable=import-error
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import busio # pylint: disable=import-error
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import digitalio # pylint: disable=import-error
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import voluptuous as vol
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from homeassistant.components.binary_sensor import PLATFORM_SCHEMA, BinarySensorDevice
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from homeassistant.const import DEVICE_DEFAULT_NAME
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import homeassistant.helpers.config_validation as cv
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_LOGGER = logging.getLogger(__name__)
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CONF_INVERT_LOGIC = "invert_logic"
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CONF_I2C_ADDRESS = "i2c_address"
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CONF_PINS = "pins"
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CONF_PULL_MODE = "pull_mode"
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MODE_UP = "UP"
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MODE_DOWN = "DOWN"
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DEFAULT_INVERT_LOGIC = False
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DEFAULT_I2C_ADDRESS = 0x20
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DEFAULT_PULL_MODE = MODE_UP
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_SENSORS_SCHEMA = vol.Schema({cv.positive_int: cv.string})
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
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{
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vol.Required(CONF_PINS): _SENSORS_SCHEMA,
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vol.Optional(CONF_INVERT_LOGIC, default=DEFAULT_INVERT_LOGIC): cv.boolean,
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vol.Optional(CONF_PULL_MODE, default=DEFAULT_PULL_MODE): vol.All(
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vol.Upper, vol.In([MODE_UP, MODE_DOWN])
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),
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vol.Optional(CONF_I2C_ADDRESS, default=DEFAULT_I2C_ADDRESS): vol.Coerce(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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"""Set up the MCP23017 binary sensors."""
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pull_mode = config[CONF_PULL_MODE]
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invert_logic = config[CONF_INVERT_LOGIC]
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i2c_address = config[CONF_I2C_ADDRESS]
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i2c = busio.I2C(board.SCL, board.SDA)
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mcp = MCP23017(i2c, address=i2c_address)
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binary_sensors = []
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pins = config[CONF_PINS]
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for pin_num, pin_name in pins.items():
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pin = mcp.get_pin(pin_num)
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binary_sensors.append(
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MCP23017BinarySensor(pin_name, pin, pull_mode, invert_logic)
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)
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add_devices(binary_sensors, True)
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class MCP23017BinarySensor(BinarySensorDevice):
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"""Represent a binary sensor that uses MCP23017."""
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def __init__(self, name, pin, pull_mode, invert_logic):
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"""Initialize the MCP23017 binary sensor."""
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self._name = name or DEVICE_DEFAULT_NAME
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self._pin = pin
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self._pull_mode = pull_mode
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self._invert_logic = invert_logic
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self._state = None
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self._pin.direction = digitalio.Direction.INPUT
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self._pin.pull = digitalio.Pull.UP
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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 entity."""
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return self._state != self._invert_logic
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def update(self):
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"""Update the GPIO state."""
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self._state = self._pin.value
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