I can't make sensors works on my Asus Transformer T100.
Magnetometer and Compass don't start, and I have fake value from the accelerometer (always x=0, y=9.8, z=0).
I always get the same result, even with my laptop :
first textEdit:
Initialisation... QAccelerometer is connected to backend... QAccelerometer isActive... Attente des données capteur... Second textEdit:
ven. juin 6 14:56:41 2014 Acceleration: x = 0 y = 9.8 z = 0 Compass: UNAVAILABLE QMagnetometer: UNAVAILABLE And this code :
QList<QByteArray> sensorList = QSensor::sensorTypes(); ui->init->append("Sensor list length: " + QString::number(sensorList.size()).toUtf8()); foreach( QByteArray sensorName, sensorList ) { ui->init->append("Sensor: " + sensorName); } Give me :
Sensor: QAmbientLightSensor Sensor: QAccelerometer Sensor: QTiltSensor Sensor: QOrientationSensor Sensor: QRotationSensor Where is QCompass ? QMagnetometer ? Why QAccelerometer is faked ? :'(
Here is my simplified test-code, only with QCompass :
header:
#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> #include <QCompass> #include <QCompassReading> namespace Ui { class MainWindow; } class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); ~MainWindow(); public slots: void update(); void error(int); private: Ui::MainWindow *ui; QCompass *compass; QCompassReading *compass_reading; }; #endif // MAINWINDOW_H code :
#include <QDateTime> #include "mainwindow.h" #include "ui_mainwindow.h" #include <QMessageBox> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); ui->init->setText("Initialisation..."); compass = new QCompass(this); connect(compass, SIGNAL(readingChanged()), this, SLOT(update())); connect(compass, SIGNAL(sensorError(int)), this, SLOT(error(int))); compass->setDataRate(1); compass->start(); if (compass->isBusy()) { ui->init->append("QCompass is busy..."); } if(compass->isConnectedToBackend()) { ui->init->append("QCompass is connected to backend..."); } if(compass->isActive()) { ui->init->append("QCompass isActive..."); } ui->init->append("Waiting for sensors..."); } MainWindow::~MainWindow() { delete compass; delete ui; } void MainWindow::update() { QString text_compass; ui->textEdit->clear(); accel_reading = accel->reading(); compass_reading = compass->reading(); if(compass_reading != 0) { text_compass = QDateTime::currentDateTime().toString() + + "\nCompass: azimuth = " + QString::number(compass_reading->azimuth()); + "\ncalibration level = " + QString::number(compass_reading->calibrationLevel()); ui->textEdit->append(text_compass); } else { text_compass = "\nCompass: UNAVAILABLE"; ui->textEdit->append(text_compass); } } void MainWindow::error(int erreur) { QMessageBox::critical(this, "Erreur", "Erreur num : " + QString::number(erreur).toUtf8()); } 1 Answer
The solution for now is to hack the winrt sensors plugin and rebuild it. (the sensors backend for winrt works for windows 7/8 desktop application).
First git clone the plugin, or get Qt's source code.
then open src/plugins/sensors/sensors.pro and add these lines :
win32-msvc2012|win32-msvc2013 { isEmpty(SENSORS_PLUGINS): SENSORS_PLUGINS = winrt generic dummy } winrt|win32-msvc2012|win32-msvc2013 { isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, winrt):SUBDIRS += winrt } REMOVE this line :
isEmpty(SENSORS_PLUGINS)|contains(SENSORS_PLUGINS, winrt):winrt:SUBDIRS += winrt Then open src/plugins/sensors/winrt/winrt.pro and add this lines :
win32-msvc2012|win32-msvc2013: LIBS += -lruntimeobject And finally run qmake, make/nmake, make/nmake install (Ask google for more informations about how to build)
IMPORTANT : the run process should start from the directory where the qtsensors.pro file is (e. g. C:\Qt\5.4\Src\qtsensors).
To get more informations, and follow :
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