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/*
// Copyright (c) 2018 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#include "dbus/dbuswrite.hpp"
#include <iostream>
#include <sdbusplus/bus.hpp>
// this bus object is treated as a singleton because the class is constructed in
// a different thread than it is used, and as bus objects are relatively
// expensive we'd prefer to only have one
std::unique_ptr<sdbusplus::bus::bus> writeBus = nullptr;
void initBus()
{
if (writeBus == nullptr)
{
writeBus = std::make_unique<sdbusplus::bus::bus>(
sdbusplus::bus::new_default());
}
}
void DbusWritePercent::write(double value)
{
float minimum = getMin();
float maximum = getMax();
float range = maximum - minimum;
float offset = range * value;
float ovalue = offset + minimum;
if (oldValue == static_cast<int64_t>(ovalue))
{
return;
}
initBus();
auto mesg =
writeBus->new_method_call(connectionName.c_str(), path.c_str(),
"org.freedesktop.DBus.Properties", "Set");
mesg.append(pwmInterface, "Target",
sdbusplus::message::variant<uint64_t>(ovalue));
auto resp = writeBus->call(mesg);
if (resp.is_method_error())
{
std::cerr << "Error sending message to " << path << "\n";
}
oldValue = static_cast<int64_t>(ovalue);
return;
}
void DbusWrite::write(double value)
{
if (oldValue == static_cast<int64_t>(value))
{
return;
}
initBus();
auto mesg =
writeBus->new_method_call(connectionName.c_str(), path.c_str(),
"org.freedesktop.DBus.Properties", "Set");
mesg.append(pwmInterface, "Target",
sdbusplus::message::variant<uint64_t>(value));
auto resp = writeBus->call(mesg);
if (resp.is_method_error())
{
std::cerr << "Error sending message to " << path << "\n";
}
oldValue = static_cast<int64_t>(value);
return;
}
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