--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/sensors/n900/n900accelerometer.cpp	Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "n900accelerometer.h"
+#include <QFile>
+#include <QDebug>
+#include <time.h>
+#include <stdio.h>
+
+char const * const n900accelerometer::id("n900.accelerometer");
+char const * const n900accelerometer::filename("/sys/class/i2c-adapter/i2c-3/3-001d/coord");
+char const * const n900accelerometer::range("/sys/class/i2c-adapter/i2c-3/3-001d/scale");
+char const * const n900accelerometer::rate("/sys/class/i2c-adapter/i2c-3/3-001d/rate");
+
+n900accelerometer::n900accelerometer(QSensor *sensor)
+    : n900filebasedsensor(sensor)
+{
+    setReading<QAccelerometerReading>(&m_reading);
+    // Details derived from the kernel driver
+    addDataRate(100, 100); // 100Hz
+    addOutputRange(-22.418, 22.418, 0.17651); // 2G
+    setDescription(QLatin1String("lis302dl"));
+}
+
+void n900accelerometer::start()
+{
+    if (!QFile::exists(QLatin1String(filename)))
+        goto error;
+
+    n900filebasedsensor::start();
+    return;
+
+error:
+    sensorStopped();
+}
+
+void n900accelerometer::poll()
+{
+    // Note that this is a rather inefficient way to generate this data.
+    // Ideally the kernel would scale the hardware's values to m/s^2 for us
+    // and give us a timestamp along with that data.
+
+    FILE *fd = fopen(filename, "r");
+    if (!fd) return;
+    int x, y, z;
+    int rs = fscanf(fd, "%i %i %i", &x, &y, &z);
+    fclose(fd);
+    if (rs != 3) return;
+
+    // Convert from milli-Gs to meters per second per second
+    // Using 1 G = 9.80665 m/s^2
+    qreal ax = x * 0.00980665;
+    qreal ay = y * -0.00980665;
+    qreal az = z * -0.00980665;
+
+    m_reading.setTimestamp(clock());
+    m_reading.setX(ax);
+    m_reading.setY(ay);
+    m_reading.setZ(az);
+
+    newReadingAvailable();
+}
+