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.. GPIO Zero: a library for controlling the Raspberry Pi's GPIO pins
..
.. Copyright (c) 2023 Dave Jones <dave@waveform.org.uk>
..
.. SPDX-License-Identifier: BSD-3-Clause
=====================
Environment Variables
=====================
All utilities provided by GPIO Zero accept the following environment variables:
.. envvar:: GPIOZERO_PIN_FACTORY
The library to use when communicating with the GPIO pins. Defaults to
attempting to load lgpio, then RPi.GPIO, then pigpio, and finally uses a
native Python implementation. Valid values include "lgpio", "rpigpio",
"pigpio", "native", and "mock". The latter is most useful on non-Pi
platforms as it emulates a Raspberry Pi model 3B (by default).
.. envvar:: PIGPIO_ADDR
The hostname of the Raspberry Pi the pigpio library should attempt to
connect to (if the pigpio pin factory is being used). Defaults to
``localhost``.
.. envvar:: PIGPIO_PORT
The port number the pigpio library should attempt to connect to (if the
pigpio pin factory is being used). Defaults to ``8888``.
.. only:: builder_man
See Also
--------
:manpage:`pinout(1)`, :manpage:`pintest(1)`
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