mirror of
https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
synced 2026-10-28 13:55:08 +03:00
1d87088b1e
Unlike the C++ bindings: we can't expect the python runtime to call the Chip object's destructor when all references are dropped. We need to close each chip explicitly. Either call the close() method directly or use controlled execution in all examples. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
45 lines
1.2 KiB
Python
Executable File
45 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-License-Identifier: LGPL-2.1-or-later
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#
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# This file is part of libgpiod.
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#
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# Copyright (C) 2017-2018 Bartosz Golaszewski <bartekgola@gmail.com>
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#
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'''Simplified reimplementation of the gpiomon tool in Python.'''
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import gpiod
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import sys
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def print_event(event):
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if event.type == gpiod.LineEvent.RISING_EDGE:
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print(' RISING EDGE', end='')
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elif event.type == gpiod.LineEvent.FALLING_EDGE:
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print('FALLING EDGE', end='')
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else:
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raise TypeError('Invalid event type')
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print(' {}.{} line: {}'.format(event.sec, event.nsec, event.source.offset()))
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if len(sys.argv) < 3:
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raise TypeError('usage: gpiomon.py <gpiochip> <offset1> <offset2> ...')
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with gpiod.Chip(sys.argv[1]) as chip:
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offsets = []
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for off in sys.argv[2:]:
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offsets.append(int(off))
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lines = chip.get_lines(offsets)
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lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_EV_BOTH_EDGES)
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try:
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while True:
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ev_lines = lines.event_wait(sec=1)
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if ev_lines:
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for line in ev_lines:
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event = line.event_read()
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print_event(event)
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except KeyboardInterrupt:
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sys.exit(130)
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