def test_global_find_line_function(self):
line = gpiod.find_line('gpio-mockup-B-4')
self.assertNotEqual(line, None)
try:
self.assertEqual(line.owner().label(), 'gpio-mockup-B')
self.assertEqual(line.offset(), 4)
finally:
line.owner().close()
def __init__(self, name, direction=INPUT, default_val=None):
self._direction = direction
self._line = gpiod.find_line(name)
self._out_value = False
if self._line is None:
raise RuntimeError('failed to find gpio with name %s' % name)
if default_val is not None and direction == Gpio.OUTPUT:
self.set(default_val)
def cfg_to_line(cfg):
if 'name' in cfg:
name = cfg['name']
line = gpiod.find_line(name)
if not line:
raise FileNotFoundError(errno.ENOENT, "No such GPIO line", name)
else:
try:
chip = gpiod.Chip(cfg['chip'], gpiod.Chip.OPEN_LOOKUP)
line = chip.get_line(cfg['line'])
except FileNotFoundError as e:
e.strerror = "No such GPIO chip"
e.filename = cfg['chip']
raise e
except OSError as e:
if e.errno == errno.EINVAL:
raise FileNotFoundError(
errno.ENOENT, "GPIO chip '%s' has no line %d" %
(cfg['chip'], cfg['line']))
raise e
return line
def test_global_find_line_function_nonexistent(self):
line = gpiod.find_line('nonexistent-line')
self.assertEqual(line, None)
#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of libgpiod.
#
# Copyright (C) 2017-2018 Bartosz Golaszewski <*****@*****.**>
#
'''Reimplementation of the gpiofind tool in Python.'''
import gpiod
import sys
line = gpiod.find_line(sys.argv[1])
print('{} {}'.format(line.owner().name(), line.offset()))
def find_line():
line = gpiod.find_line('gpio-mockup-A-4')
print('found line - offset: {}'.format(line.offset()))
def setup(self, line, direction):
self.chip = gpiod.find_line(str(line)).owner().name()
self.offset = gpiod.find_line(str(line)).offset()
self.offsetList.append(self.offset)
self.pin = gpiod.Chip(self.chip).get_lines(self.offsetList)
self.pin.request(consumer=self.chip, type=direction)
