File encoder.cpp#

File List > libpisoundmicro > encoder.cpp
// SPDX-License-Identifier: LGPL-2.1-only
//
// libpisoundmicro - a utility library for Pisound Micro I/O expander capabilities.
// Copyright (c) 2017-2025 Vilniaus Blokas UAB, https://blokas.io/
//
// This file is part of libpisoundmicro.
//
// libpisoundmicro is free software: you can redistribute it and/or modify it under the terms of the
// GNU Lesser General Public License as published by the Free Software Foundation, version 2.1 of the License.
//
// libpisoundmicro is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
// for more details.
//
// You should have received a copy of the GNU Lesser General Public License along with libpisoundmicro. If not, see <https://www.gnu.org/licenses/>.

#include "include/pisound-micro.h"

#include <fcntl.h>
#include <errno.h>

namespace upisnd
{

Encoder Encoder::setup(ElementName name, upisnd_pin_t pin_a, upisnd_pin_pull_e pull_a, upisnd_pin_t pin_b, upisnd_pin_pull_e pull_b)
{
    return Encoder(upisnd_setup_encoder(name, pin_a, pull_a, pin_b, pull_b), false);
}

int Encoder::get() const
{
    ValueFd fd = openValueFd(O_RDONLY | O_CLOEXEC);
    int result = fd.read();
    if (errno != 0)
        return -errno;
    return result;
}

int Encoder::getOpts(upisnd_encoder_opts_t &opts) const
{
    return upisnd_element_encoder_get_opts(ref(), &opts);
}

int Encoder::setOpts(const upisnd_encoder_opts_t &opts)
{
    return upisnd_element_encoder_set_opts(ref(), &opts);
}

upisnd_pin_t Encoder::getPinB() const
{
    return upisnd_element_encoder_get_pin_b(ref());
}

upisnd_pin_pull_e Encoder::getPinPull() const
{
    return upisnd_element_gpio_get_pull(ref());
}

upisnd_pin_pull_e Encoder::getPinBPull() const
{
    return upisnd_element_encoder_get_pin_b_pull(ref());
}


} // namespace upisnd