P1: Critical Run a very simple program which uses QCompass:
#include <QtCore>
#include <QCompass>
QTM_USE_NAMESPACE
class Filter : public QCompassFilter
{
public:
bool filter(QCompassReading *pReading)
{
qDebug() << "Compass Calibration Level:" << pReading->calibrationLevel() << "Azimuth:" << pReading->azimuth();
return false; // don't store the reading in the sensor
}
};
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
QCompass compass;
Filter filter;
compass.addFilter(&filter);
compass.start();
if (!compass.isActive()) {
qWarning("Compass did not start!");
return 1;
}
return app.exec();
}
Expected result: Azimuth info should be printed to the console when rotating the device.
Actual result: The following is printed in the console:
Setting up compass (0.0.1) ... loaded the Generic plugin loaded the Maemo 6 plugin New control sensor "compasssensor" interface created with session id 8 ... Object::connect: No such signal CompassSensorChannelInterface::levelChanged(const int&) in maemo6compass.cpp:56 Object::connect: No such signal CompassSensorChannelInterface::degreesChanged(const int&) in maemo6compass.cpp:57 Setting data rate 43 Hz (interval 23 ms) for "compasssensor"
and no azimuth info is reported.