mirror of
https://github.com/KevinMidboe/python-gpiozero.git
synced 2025-10-29 17:50:37 +00:00
c2a9392ea5
While the tests work well on a PC or Travis, the Pi (where I ought to be running them!) has some issues with the timing tests. Need to relax the tolerance of the "assert_states_and_times" method to 0.05 seconds otherwise it periodically fails even on something reasonably quick like a Pi 2 (less failures on a Pi 3 but still occasionally). Also reduced default fps to 25; if the default timing occasionally fails on a Pi 2 it's evidently too fast for a Pi 1 and shouldn't be the default; 25 also doesn't look any different to me on a pulsing LED. There's also a bunch of miscellaneous fixes in here; last minute typos and chart re-gens for the 1.2 release.
57 lines
1.2 KiB
ReStructuredText
57 lines
1.2 KiB
ReStructuredText
============
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Source Tools
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============
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.. currentmodule:: gpiozero.tools
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GPIO Zero includes several utility routines which are intended to be used with
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the :attr:`~gpiozero.SourceMixin.source` and
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:attr:`~gpiozero.ValuesMixin.values` attributes common to most devices in the
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library. These utility routines are in the ``tools`` module of GPIO Zero and
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are typically imported as follows::
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from gpiozero.tools import scaled, negated, conjunction
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Given that :attr:`~gpiozero.SourceMixin.source` and
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:attr:`~gpiozero.ValuesMixin.values` deal with infinite iterators, another
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excellent source of utilities is the :mod:`itertools` module in the standard
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library.
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Single source conversions
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=========================
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.. autofunction:: negated
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.. autofunction:: inverted
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.. autofunction:: scaled
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.. autofunction:: clamped
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.. autofunction:: post_delayed
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.. autofunction:: pre_delayed
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.. autofunction:: quantized
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.. autofunction:: queued
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Combining sources
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=================
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.. autofunction:: conjunction
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.. autofunction:: disjunction
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.. autofunction:: averaged
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Artifical sources
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=================
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.. autofunction:: random_values
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.. autofunction:: sin_values
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.. autofunction:: cos_values
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