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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSensors module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "sensorfwals.h"
char const * const Sensorfwals::id("sensorfw.als");
Sensorfwals::Sensorfwals(QSensor *sensor)
: SensorfwSensorBase(sensor)
, m_initDone(false)
{
init();
setReading<QAmbientLightReading>(&m_reading);
// metadata
setDescription(QLatin1String("ambient light intensity given as 5 pre-defined levels"));
addOutputRange(0, 5, 1);
addDataRate(10,10);
sensor->setDataRate(10);//set a default rate
}
void Sensorfwals::start()
{
if (reinitIsNeeded)
init();
if (m_sensorInterface) {
Unsigned data(((ALSSensorChannelInterface*)m_sensorInterface)->lux());
m_reading.setLightLevel(getLightLevel(data.x()));
m_reading.setTimestamp(data.UnsignedData().timestamp_);
newReadingAvailable();
}
SensorfwSensorBase::start();
}
void Sensorfwals::slotDataAvailable(const Unsigned& data)
{
QAmbientLightReading::LightLevel level = getLightLevel(data.x());
if (level != m_reading.lightLevel()) {
m_reading.setLightLevel(level);
m_reading.setTimestamp(data.UnsignedData().timestamp_);
newReadingAvailable();
}
}
bool Sensorfwals::doConnect()
{
Q_ASSERT(m_sensorInterface);
return QObject::connect(m_sensorInterface, SIGNAL(ALSChanged(Unsigned)),
this, SLOT(slotDataAvailable(Unsigned)));
}
QString Sensorfwals::sensorName() const
{
return "alssensor";
}
QAmbientLightReading::LightLevel Sensorfwals::getLightLevel(int lux)
{
// Convert from integer to fixed levels
if (lux < 0) {
return QAmbientLightReading::Undefined;
} else if (lux < 10) {
return QAmbientLightReading::Dark;
} else if (lux < 50) {
return QAmbientLightReading::Twilight;
} else if (lux < 100) {
return QAmbientLightReading::Light;
} else if (lux < 150) {
return QAmbientLightReading::Bright;
} else {
return QAmbientLightReading::Sunny;
}
}
void Sensorfwals::init()
{
m_initDone = false;
initSensor<ALSSensorChannelInterface>(m_initDone);
}
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