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753c33142f
While () and (void) are synonymous in C++, we use () everywhere else so stick to that pattern in examples. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// SPDX-FileCopyrightText: 2023 Kent Gibson <warthog618@gmail.com>
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/* Minimal example of reading multiple lines. */
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#include <cstdlib>
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#include <gpiod.hpp>
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#include <iostream>
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namespace {
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/* Example configuration - customize to suit your situation */
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const ::std::filesystem::path chip_path("/dev/gpiochip0");
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const ::gpiod::line::offsets line_offsets = { 5, 3, 7 };
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} /* namespace */
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int main()
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{
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auto request = ::gpiod::chip(chip_path)
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.prepare_request()
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.set_consumer("get-multiple-line-values")
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.add_line_settings(
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line_offsets,
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::gpiod::line_settings().set_direction(
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::gpiod::line::direction::INPUT))
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.do_request();
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auto values = request.get_values();
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for (size_t i = 0; i < line_offsets.size(); i++)
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::std::cout << line_offsets[i] << "="
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<< (values[i] == ::gpiod::line::value::ACTIVE ?
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"Active" :
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"Inactive")
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<< ' ';
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::std::cout << ::std::endl;
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return EXIT_SUCCESS;
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}
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