mirror of
https://github.com/home-assistant/core
synced 2024-09-18 19:55:20 +02:00
71 lines
1.7 KiB
Python
71 lines
1.7 KiB
Python
"""
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Support for controlling GPIO pins of a Raspberry Pi.
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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/rpi_gpio/
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"""
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# pylint: disable=import-error
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import logging
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from homeassistant.const import (
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EVENT_HOMEASSISTANT_START, EVENT_HOMEASSISTANT_STOP)
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REQUIREMENTS = ['RPi.GPIO==0.6.1']
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_LOGGER = logging.getLogger(__name__)
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DOMAIN = 'rpi_gpio'
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# pylint: disable=no-member
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def setup(hass, config):
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"""Setup the Raspberry PI GPIO component."""
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import RPi.GPIO as 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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GPIO.setmode(GPIO.BCM)
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return True
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def setup_output(port):
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"""Setup a GPIO as output."""
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import RPi.GPIO as GPIO
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GPIO.setup(port, GPIO.OUT)
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def setup_input(port, pull_mode):
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"""Setup a GPIO as input."""
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import RPi.GPIO as GPIO
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GPIO.setup(port, GPIO.IN,
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GPIO.PUD_DOWN if pull_mode == 'DOWN' else GPIO.PUD_UP)
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def write_output(port, value):
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"""Write a value to a GPIO."""
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import RPi.GPIO as GPIO
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GPIO.output(port, value)
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def read_input(port):
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"""Read a value from a GPIO."""
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import RPi.GPIO as GPIO
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return GPIO.input(port)
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def edge_detect(port, event_callback, bounce):
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"""Add detection for RISING and FALLING events."""
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import RPi.GPIO as GPIO
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GPIO.add_event_detect(
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port,
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GPIO.BOTH,
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callback=event_callback,
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bouncetime=bounce)
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