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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 watching for rising edges on a single line."""
import gpiod
from gpiod.line import Edge
def watch_line_rising(chip_path, line_offset):
with gpiod.request_lines(
chip_path,
consumer="watch-line-rising",
config={line_offset: gpiod.LineSettings(edge_detection=Edge.RISING)},
) as request:
while True:
# Blocks until at least one event is available
for event in request.read_edge_events():
print(
"line: {} type: Rising event #{}".format(
event.line_offset, event.line_seqno
)
)
if __name__ == "__main__":
try:
watch_line_rising("/dev/gpiochip0", 5)
except OSError as ex:
print(ex, "\nCustomise the example configuration to suit your situation")
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