72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
"""
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Support for controlling GPIO pins of a Beaglebone Black.
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For more details about this component, please refer to the documentation at
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https://home-assistant.io/components/bbb_gpio/
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"""
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import logging
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from homeassistant.const import EVENT_HOMEASSISTANT_START, EVENT_HOMEASSISTANT_STOP
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REQUIREMENTS = ["Adafruit_BBIO==1.0.0"]
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_LOGGER = logging.getLogger(__name__)
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DOMAIN = "bbb_gpio"
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def setup(hass, config):
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"""Set up the BeagleBone Black GPIO component."""
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# pylint: disable=import-error
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from Adafruit_BBIO import GPIO
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def cleanup_gpio(event):
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"""Stuff to do before stopping."""
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GPIO.cleanup()
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def prepare_gpio(event):
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"""Stuff to do when home assistant starts."""
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hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, cleanup_gpio)
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hass.bus.listen_once(EVENT_HOMEASSISTANT_START, prepare_gpio)
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return True
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def setup_output(pin):
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"""Set up a GPIO as output."""
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# pylint: disable=import-error
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from Adafruit_BBIO import GPIO
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GPIO.setup(pin, GPIO.OUT)
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def setup_input(pin, pull_mode):
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"""Set up a GPIO as input."""
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# pylint: disable=import-error
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from Adafruit_BBIO import GPIO
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GPIO.setup(pin, GPIO.IN, GPIO.PUD_DOWN if pull_mode == "DOWN" else GPIO.PUD_UP)
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def write_output(pin, value):
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"""Write a value to a GPIO."""
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# pylint: disable=import-error
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from Adafruit_BBIO import GPIO
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GPIO.output(pin, value)
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def read_input(pin):
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"""Read a value from a GPIO."""
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# pylint: disable=import-error
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from Adafruit_BBIO import GPIO
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return GPIO.input(pin) is GPIO.HIGH
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def edge_detect(pin, event_callback, bounce):
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"""Add detection for RISING and FALLING events."""
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# pylint: disable=import-error
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from Adafruit_BBIO import GPIO
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GPIO.add_event_detect(pin, GPIO.BOTH, callback=event_callback, bouncetime=bounce)
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