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https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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485b81cd4b
* Sort imports * Use f-strings where possible * Remove usage of `tuple` for config key values Signed-off-by: Vincent Fazio <vfazio@gmail.com> Link: https://patch.msgid.link/20260401001459.19159-7-vfazio@gmail.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
43 lines
1.3 KiB
Python
Executable File
43 lines
1.3 KiB
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 edges on multiple lines."""
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from collections.abc import Iterable
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import gpiod
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from gpiod.edge_event import EdgeEvent
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from gpiod.line import Edge
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def edge_type_str(event: EdgeEvent) -> str:
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if event.event_type is event.Type.RISING_EDGE:
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return "Rising"
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if event.event_type is event.Type.FALLING_EDGE:
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return "Falling"
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return "Unknown"
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def watch_multiple_line_values(chip_path: str, line_offsets: Iterable[int]) -> None:
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with gpiod.request_lines(
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chip_path,
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consumer="watch-multiple-line-values",
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config={line_offsets: gpiod.LineSettings(edge_detection=Edge.BOTH)},
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) as request:
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while True:
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for event in request.read_edge_events():
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print(
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f"offset: {event.line_offset}"
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f" type: {edge_type_str(event):<7}"
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f" event #{event.global_seqno}"
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f" line event #{event.line_seqno}"
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)
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if __name__ == "__main__":
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try:
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watch_multiple_line_values("/dev/gpiochip0", [5, 3, 7])
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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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