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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
# SPDX-FileCopyrightText: 2023 Kent Gibson <warthog618@gmail.com>
"""Minimal example of toggling a single line."""
import gpiod
import time
from gpiod.line import Direction, Value
def toggle_value(value):
if value == Value.INACTIVE:
return Value.ACTIVE
return Value.INACTIVE
def toggle_line_value(chip_path, line_offset):
value_str = {Value.ACTIVE: "Active", Value.INACTIVE: "Inactive"}
value = Value.ACTIVE
with gpiod.request_lines(
chip_path,
consumer="toggle-line-value",
config={
line_offset: gpiod.LineSettings(
direction=Direction.OUTPUT, output_value=value
)
},
) as request:
while True:
print("{}={}".format(line_offset, value_str[value]))
time.sleep(1)
value = toggle_value(value)
request.set_value(line_offset, value)
if __name__ == "__main__":
try:
toggle_line_value("/dev/gpiochip0", 5)
except OSError as ex:
print(ex, "\nCustomise the example configuration to suit your situation")
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