99 lines
2.8 KiB
Python
99 lines
2.8 KiB
Python
"""Support for switch sensor using I2C PCAL9535A chip."""
|
|
from pcal9535a import PCAL9535A
|
|
import voluptuous as vol
|
|
|
|
from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchEntity
|
|
from homeassistant.const import DEVICE_DEFAULT_NAME
|
|
import homeassistant.helpers.config_validation as cv
|
|
|
|
CONF_INVERT_LOGIC = "invert_logic"
|
|
CONF_I2C_ADDRESS = "i2c_address"
|
|
CONF_I2C_BUS = "i2c_bus"
|
|
CONF_PINS = "pins"
|
|
CONF_STRENGTH = "strength"
|
|
|
|
STRENGTH_025 = "0.25"
|
|
STRENGTH_050 = "0.5"
|
|
STRENGTH_075 = "0.75"
|
|
STRENGTH_100 = "1.0"
|
|
|
|
DEFAULT_INVERT_LOGIC = False
|
|
DEFAULT_I2C_ADDRESS = 0x20
|
|
DEFAULT_I2C_BUS = 1
|
|
DEFAULT_STRENGTH = STRENGTH_100
|
|
|
|
_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_STRENGTH, default=DEFAULT_STRENGTH): vol.In(
|
|
[STRENGTH_025, STRENGTH_050, STRENGTH_075, STRENGTH_100]
|
|
),
|
|
vol.Optional(CONF_I2C_ADDRESS, default=DEFAULT_I2C_ADDRESS): vol.Coerce(int),
|
|
vol.Optional(CONF_I2C_BUS, default=DEFAULT_I2C_BUS): cv.positive_int,
|
|
}
|
|
)
|
|
|
|
|
|
def setup_platform(hass, config, add_entities, discovery_info=None):
|
|
"""Set up the PCAL9535A devices."""
|
|
invert_logic = config[CONF_INVERT_LOGIC]
|
|
i2c_address = config[CONF_I2C_ADDRESS]
|
|
bus = config[CONF_I2C_BUS]
|
|
|
|
pcal = PCAL9535A(bus, i2c_address)
|
|
|
|
switches = []
|
|
pins = config[CONF_PINS]
|
|
for pin_num, pin_name in pins.items():
|
|
pin = pcal.get_pin(pin_num // 8, pin_num % 8)
|
|
switches.append(PCAL9535ASwitch(pin_name, pin, invert_logic))
|
|
|
|
add_entities(switches)
|
|
|
|
|
|
class PCAL9535ASwitch(SwitchEntity):
|
|
"""Representation of a PCAL9535A output pin."""
|
|
|
|
def __init__(self, name, pin, invert_logic):
|
|
"""Initialize the pin."""
|
|
self._name = name or DEVICE_DEFAULT_NAME
|
|
self._pin = pin
|
|
self._pin.inverted = invert_logic
|
|
self._pin.input = False
|
|
self._state = self._pin.level
|
|
|
|
@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.level = True
|
|
self._state = True
|
|
self.schedule_update_ha_state()
|
|
|
|
def turn_off(self, **kwargs):
|
|
"""Turn the device off."""
|
|
self._pin.level = False
|
|
self._state = False
|
|
self.schedule_update_ha_state()
|