mirror of
https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
synced 2026-10-24 00:48:53 +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>
43 lines
1.3 KiB
Python
Executable File
43 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 watching for edges on multiple lines."""
|
|
|
|
import gpiod
|
|
|
|
from gpiod.line import Edge
|
|
|
|
|
|
def edge_type_str(event):
|
|
if event.event_type is event.Type.RISING_EDGE:
|
|
return "Rising"
|
|
if event.event_type is event.Type.FALLING_EDGE:
|
|
return "Falling"
|
|
return "Unknown"
|
|
|
|
|
|
def watch_multiple_line_values(chip_path, line_offsets):
|
|
with gpiod.request_lines(
|
|
chip_path,
|
|
consumer="watch-multiple-line-values",
|
|
config={tuple(line_offsets): gpiod.LineSettings(edge_detection=Edge.BOTH)},
|
|
) as request:
|
|
while True:
|
|
for event in request.read_edge_events():
|
|
print(
|
|
"offset: {} type: {:<7} event #{} line event #{}".format(
|
|
event.line_offset,
|
|
edge_type_str(event),
|
|
event.global_seqno,
|
|
event.line_seqno,
|
|
)
|
|
)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
try:
|
|
watch_multiple_line_values("/dev/gpiochip0", [5, 3, 7])
|
|
except OSError as ex:
|
|
print(ex, "\nCustomise the example configuration to suit your situation")
|