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https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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36a2127e58
A collection of minor changes to be more consistent with other examples: - capitalize comments - add line offset to value outputs - drop comma from edge event outputs - improve behaviour if run on a platform that does not match the example configuration - use with to cleanup request in toggle_line_value.py Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
44 lines
1.1 KiB
Python
Executable File
44 lines
1.1 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 toggling a single line."""
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import gpiod
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import time
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from gpiod.line import Direction, Value
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def toggle_value(value):
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if value == Value.INACTIVE:
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return Value.ACTIVE
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return Value.INACTIVE
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def toggle_line_value(chip_path, line_offset):
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value_str = {Value.ACTIVE: "Active", Value.INACTIVE: "Inactive"}
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value = Value.ACTIVE
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with gpiod.request_lines(
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chip_path,
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consumer="toggle-line-value",
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config={
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line_offset: gpiod.LineSettings(
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direction=Direction.OUTPUT, output_value=value
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)
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},
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) as request:
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while True:
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print("{}={}".format(line_offset, value_str[value]))
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time.sleep(1)
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value = toggle_value(value)
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request.set_value(line_offset, value)
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if __name__ == "__main__":
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try:
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toggle_line_value("/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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