92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
"""Support for switch sensor using I2C MCP23017 chip."""
|
|
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
|
|
|
|
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()
|