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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "n900proximitysensor.h"
#include <QFile>
#include <QDebug>
#include <string.h>
char const * const n900proximitysensor::id("n900.proximity");
char const * const n900proximitysensor::filename("/sys/bus/platform/devices/proximity/state");
n900proximitysensor::n900proximitysensor(QSensor *sensor)
: n900filebasedsensor(sensor)
{
setReading<QProximityReading>(&m_reading);
// The proximity hardware runs at 10Hz.
// Report 1-10 so the app can choose the speed it wants to poll
addDataRate(1, 10);
}
void n900proximitysensor::start()
{
if (!QFile::exists(QLatin1String(filename)))
goto error;
n900filebasedsensor::start();
return;
error:
sensorStopped();
}
void n900proximitysensor::poll()
{
FILE *fd = fopen(filename, "r");
if (!fd) return;
char buffer[20];
int rs = fscanf(fd, "%s", buffer);
fclose(fd);
if (rs != 1) return;
bool close;
if (strcmp(buffer, "closed") == 0) {
close = true;
} else {
close = false;
}
if (close != m_reading.close() || m_reading.timestamp() == 0) {
m_reading.setTimestamp(getTimestamp());
m_reading.setClose(close);
newReadingAvailable();
}
}
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