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https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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96c52d3e59
Replace tool examples with use case examples drawn from the tools. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
33 lines
991 B
Python
Executable File
33 lines
991 B
Python
Executable File
#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0-or-later
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# SPDX-FileCopyrightText: 2023 Kent Gibson <warthog618@gmail.com>
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"""Minimal example of watching for rising edges on a single line."""
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import gpiod
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from gpiod.line import Edge
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def watch_line_rising(chip_path, line_offset):
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with gpiod.request_lines(
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chip_path,
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consumer="watch-line-rising",
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config={line_offset: gpiod.LineSettings(edge_detection=Edge.RISING)},
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) as request:
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while True:
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# Blocks until at least one event is available
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for event in request.read_edge_events():
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print(
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"line: {} type: Rising event #{}".format(
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event.line_offset, event.line_seqno
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)
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)
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if __name__ == "__main__":
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try:
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watch_line_rising("/dev/gpiochip0", 5)
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except OSError as ex:
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print(ex, "\nCustomise the example configuration to suit your situation")
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