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![Jardi Martinez](/assets/img/avatar_default.png)
* 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
96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
"""Support for switch 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.switch import PLATFORM_SCHEMA
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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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from homeassistant.helpers.entity import ToggleEntity
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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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DEFAULT_INVERT_LOGIC = False
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DEFAULT_I2C_ADDRESS = 0x20
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_SWITCHES_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): _SWITCHES_SCHEMA,
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vol.Optional(CONF_INVERT_LOGIC, default=DEFAULT_INVERT_LOGIC): cv.boolean,
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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_entities, discovery_info=None):
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"""Set up the MCP23017 devices."""
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invert_logic = config.get(CONF_INVERT_LOGIC)
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i2c_address = config.get(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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switches = []
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pins = config.get(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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switches.append(MCP23017Switch(pin_name, pin, invert_logic))
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add_entities(switches)
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class MCP23017Switch(ToggleEntity):
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"""Representation of a MCP23017 output pin."""
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def __init__(self, name, pin, invert_logic):
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"""Initialize the pin."""
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self._name = name or DEVICE_DEFAULT_NAME
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self._pin = pin
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self._invert_logic = invert_logic
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self._state = False
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self._pin.direction = digitalio.Direction.OUTPUT
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self._pin.value = self._invert_logic
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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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@property
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def should_poll(self):
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"""No polling needed."""
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return False
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@property
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def is_on(self):
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"""Return true if device is on."""
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return self._state
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@property
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def assumed_state(self):
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"""Return true if optimistic updates are used."""
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return True
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def turn_on(self, **kwargs):
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"""Turn the device on."""
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self._pin.value = not self._invert_logic
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self._state = True
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self.schedule_update_ha_state()
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def turn_off(self, **kwargs):
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"""Turn the device off."""
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self._pin.value = self._invert_logic
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self._state = False
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self.schedule_update_ha_state()
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