summaryrefslogtreecommitdiffstats
path: root/src/plugins/sensors/blackberry/bbmagnetometer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/sensors/blackberry/bbmagnetometer.cpp')
-rw-r--r--src/plugins/sensors/blackberry/bbmagnetometer.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/plugins/sensors/blackberry/bbmagnetometer.cpp b/src/plugins/sensors/blackberry/bbmagnetometer.cpp
new file mode 100644
index 00000000..eed1497c
--- /dev/null
+++ b/src/plugins/sensors/blackberry/bbmagnetometer.cpp
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Research In Motion
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "bbmagnetometer.h"
+
+BbMagnetometer::BbMagnetometer(QSensor *sensor)
+ : BbSensorBackend<QMagnetometerReading>(devicePath(), SENSOR_TYPE_MAGNETOMETER, sensor)
+{
+ setDescription(QLatin1String("Magnetic flux density in Teslas (T)"));
+}
+
+QString BbMagnetometer::devicePath()
+{
+ return QLatin1String("/dev/sensor/mag");
+}
+
+bool BbMagnetometer::updateReadingFromEvent(const sensor_event_t &event, QMagnetometerReading *reading)
+{
+ // TODO: In the future, support returnGeoValues here. Right now, /dev/sensors/mag has no
+ // geomagnatic mode, but will gain it in the future.
+ reading->setX(convertValue(event.motion.dsp.x));
+ reading->setY(convertValue(event.motion.dsp.y));
+ reading->setZ(convertValue(event.motion.dsp.z));
+
+ const bool returnGeoValues = sensor()->property("returnGeoValues").toBool();
+ if (returnGeoValues) {
+ switch (event.accuracy) {
+ case SENSOR_ACCURACY_UNRELIABLE: reading->setCalibrationLevel(0.0f); break;
+ case SENSOR_ACCURACY_LOW: reading->setCalibrationLevel(0.1f); break;
+
+ // We determined that MEDIUM should map to 1.0, because existing code samples
+ // show users should pop a calibration screen when seeing < 1.0. The MEDIUM accuracy
+ // is actually good enough not to require calibration, so we don't want to make it seem
+ // like it is required artificially.
+ case SENSOR_ACCURACY_MEDIUM: reading->setCalibrationLevel(1.0f); break;
+ case SENSOR_ACCURACY_HIGH: reading->setCalibrationLevel(1.0f); break;
+ }
+ } else {
+ reading->setCalibrationLevel(1.0f);
+ }
+
+ return true;
+}
+
+qreal BbMagnetometer::convertValue(float bbValueInMicroTesla)
+{
+ // Convert from microtesla to tesla
+ return bbValueInMicroTesla * 1.0e-6;
+}