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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 multiple lines."""
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_multiple_line_values(chip_path, line_values):
value_str = {Value.ACTIVE: "Active", Value.INACTIVE: "Inactive"}
request = gpiod.request_lines(
chip_path,
consumer="toggle-multiple-line-values",
config={
tuple(line_values.keys()): gpiod.LineSettings(direction=Direction.OUTPUT)
},
output_values=line_values,
)
while True:
print(
" ".join("{}={}".format(l, value_str[v]) for (l, v) in line_values.items())
)
time.sleep(1)
for l, v in line_values.items():
line_values[l] = toggle_value(v)
request.set_values(line_values)
if __name__ == "__main__":
try:
toggle_multiple_line_values(
"/dev/gpiochip0", {5: Value.ACTIVE, 3: Value.ACTIVE, 7: Value.INACTIVE}
)
except OSError as ex:
print(ex, "\nCustomise the example configuration to suit your situation")
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