47 lines
1.2 KiB
Python
47 lines
1.2 KiB
Python
# SPDX-License-Identifier: LGPL-3.0-or-later
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# Copyright (C) 2020 Daniel Thompson
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"""Inverting pin wrapper
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~~~~~~~~~~~~~~~~~~~~~~~~
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"""
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class Signal(object):
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"""Simplified Signal class
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.. note::
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The normal C implementation of the Signal class used by MicroPython
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doesn't work on the nRF family. This class provides a temporary
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workaround until that can be addressed.
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.. automethod:: __init__
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"""
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def __init__(self, pin, invert=False):
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"""Create a Signal object by wrapping a pin."""
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self.pin = pin
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self.invert = invert
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def __call__(self, v=None):
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"""Shortcut for :py:meth:`.value`"""
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return self.value(v)
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def value(self, v=None):
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"""Get or set the state of the signal.
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:param v: Value to set, defaults to None (which means get the signal
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state instead.
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:returns: The state of the signal if v is None, otherwise None.
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"""
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if v == None:
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return self.invert ^ self.pin.value()
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self.pin.value(self.invert ^ bool(v))
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def on(self):
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"""Activate the signal."""
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self.value(1)
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def off(self):
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"""Deactivate the signal."""
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self.value(0)
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