mirror of
https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
synced 2026-10-25 12:39:18 +03:00
96c52d3e59
Replace tool examples with use case examples drawn from the tools. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
48 lines
1.3 KiB
Python
Executable File
48 lines
1.3 KiB
Python
Executable File
#!/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")
|