1
mirror of https://github.com/home-assistant/core synced 2024-09-03 08:14:07 +02:00
ha-core/homeassistant/components/mcp23017/switch.py
Jardi Martinez 6be0bcceff
Bump adafruit-blinka and adafruit-circuitpython-mcp230xx (#31845)
* 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
2020-02-16 17:19:45 +01:00

96 lines
2.8 KiB
Python

"""Support for switch sensor using I2C MCP23017 chip."""
import logging
from adafruit_mcp230xx.mcp23017 import MCP23017 # pylint: disable=import-error
import board # pylint: disable=import-error
import busio # pylint: disable=import-error
import digitalio # pylint: disable=import-error
import voluptuous as vol
from homeassistant.components.switch import PLATFORM_SCHEMA
from homeassistant.const import DEVICE_DEFAULT_NAME
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.entity import ToggleEntity
_LOGGER = logging.getLogger(__name__)
CONF_INVERT_LOGIC = "invert_logic"
CONF_I2C_ADDRESS = "i2c_address"
CONF_PINS = "pins"
CONF_PULL_MODE = "pull_mode"
DEFAULT_INVERT_LOGIC = False
DEFAULT_I2C_ADDRESS = 0x20
_SWITCHES_SCHEMA = vol.Schema({cv.positive_int: cv.string})
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
{
vol.Required(CONF_PINS): _SWITCHES_SCHEMA,
vol.Optional(CONF_INVERT_LOGIC, default=DEFAULT_INVERT_LOGIC): cv.boolean,
vol.Optional(CONF_I2C_ADDRESS, default=DEFAULT_I2C_ADDRESS): vol.Coerce(int),
}
)
def setup_platform(hass, config, add_entities, discovery_info=None):
"""Set up the MCP23017 devices."""
invert_logic = config.get(CONF_INVERT_LOGIC)
i2c_address = config.get(CONF_I2C_ADDRESS)
i2c = busio.I2C(board.SCL, board.SDA)
mcp = MCP23017(i2c, address=i2c_address)
switches = []
pins = config.get(CONF_PINS)
for pin_num, pin_name in pins.items():
pin = mcp.get_pin(pin_num)
switches.append(MCP23017Switch(pin_name, pin, invert_logic))
add_entities(switches)
class MCP23017Switch(ToggleEntity):
"""Representation of a MCP23017 output pin."""
def __init__(self, name, pin, invert_logic):
"""Initialize the pin."""
self._name = name or DEVICE_DEFAULT_NAME
self._pin = pin
self._invert_logic = invert_logic
self._state = False
self._pin.direction = digitalio.Direction.OUTPUT
self._pin.value = self._invert_logic
@property
def name(self):
"""Return the name of the switch."""
return self._name
@property
def should_poll(self):
"""No polling needed."""
return False
@property
def is_on(self):
"""Return true if device is on."""
return self._state
@property
def assumed_state(self):
"""Return true if optimistic updates are used."""
return True
def turn_on(self, **kwargs):
"""Turn the device on."""
self._pin.value = not self._invert_logic
self._state = True
self.schedule_update_ha_state()
def turn_off(self, **kwargs):
"""Turn the device off."""
self._pin.value = self._invert_logic
self._state = False
self.schedule_update_ha_state()