__init__.py

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"""Support for controlling GPIO pins of a Raspberry Pi."""
 
from gpiozero import LED, DigitalInputDevice
from gpiozero.pins.pigpio import PiGPIOFactory
 
CONF_BOUNCETIME = "bouncetime"
CONF_INVERT_LOGIC = "invert_logic"
CONF_PULL_MODE = "pull_mode"
 
DEFAULT_BOUNCETIME = 50
DEFAULT_INVERT_LOGIC = False
DEFAULT_PULL_MODE = "UP"
 
DOMAIN = "remote_rpi_gpio"
 
 
def setup_output(address, port, invert_logic):
    """Set up a GPIO as output."""
 
    try:
        return LED(
            port, active_high=not invert_logic, pin_factory=PiGPIOFactory(address)
        )
    except (ValueError, IndexError, KeyError):
        return None
 
 
def setup_input(address, port, pull_mode, bouncetime):
    """Set up a GPIO as input."""
 
    if pull_mode == "UP":
        pull_gpio_up = True
    elif pull_mode == "DOWN":
        pull_gpio_up = False
 
    try:
        return DigitalInputDevice(
            port,
            pull_up=pull_gpio_up,
            bounce_time=bouncetime,
            pin_factory=PiGPIOFactory(address),
        )
    except (ValueError, IndexError, KeyError, OSError):
        return None
 
 
def write_output(switch, value):
    """Write a value to a GPIO."""
    if value == 1:
        switch.on()
    if value == 0:
        switch.off()
 
 
def read_input(sensor):
    """Read a value from a GPIO."""
    return sensor.value