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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
# SPDX-FileCopyrightText: 2023 Kent Gibson <warthog618@gmail.com>
"""Example of a bi-directional line requested as input and then switched to output."""
import gpiod
from gpiod.line import Direction, Value
def reconfigure_input_to_output(chip_path, line_offset):
# request the line initially as an input
with gpiod.request_lines(
chip_path,
consumer="reconfigure-input-to-output",
config={line_offset: gpiod.LineSettings(direction=Direction.INPUT)},
) as request:
# read the current line value
value = request.get_value(line_offset)
print("{}={} (input)".format(line_offset, value))
# switch the line to an output and drive it low
request.reconfigure_lines(
config={
line_offset: gpiod.LineSettings(
direction=Direction.OUTPUT, output_value=Value.INACTIVE
)
}
)
# report the current driven value
value = request.get_value(line_offset)
print("{}={} (output)".format(line_offset, value))
if __name__ == "__main__":
try:
reconfigure_input_to_output("/dev/gpiochip0", 5)
except OSError as ex:
print(ex, "\nCustomise the example configuration to suit your situation")
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