QT PositionSource / MagicLane slow

WilliamH07

Hi everyone,

I've embarked on a project involving a GPS receiver and QT, utilizing PositionSource and Magiclane. I'm currently using an example file to verify if everything works before diving into coding the entire application.

Here's the code I'm using:

// Importing necessary modules
import QtQuick 2.12
import QtQuick.Window 2.12
import GeneralMagic 2.0
import FpsCounter 1.0
import QtPositioning 5.12
import QtLocation 5.9

// Main window setup
Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Positioning")

    // Setting up PositionSource for GPS
    PositionSource {
        id: qtPositionSource
        name: "serialnmea"
        active: true
        PluginParameter { name: "serialnmea.serial_port"; value: "COM6" }
        Component.onCompleted: ServicesManager.dataSource.setPositionSource(qtPositionSource)
    }

    // Content updater setup
    property var updater: ServicesManager.contentUpdater(ContentItem.Type.RoadMap)
    Component.onCompleted: {
        ServicesManager.dataSource.setPositionSource(qtPositionSource)
        ServicesManager.settings.token = __my_secret_token;
        ServicesManager.logLevel = ServicesManager.Error;
        ServicesManager.settings.allowInternetConnection = true; // enable connection to online services
        updater.autoApplyWhenReady = true;
        updater.update();
    }

    // FPS counter setup
    FpsCounter {
        id: fpsCounter
    }

    // MapView setup
    MapView {
        id: map
        anchors.fill: parent
        viewAngle: 25
        zoomLevel: 69
        viewPerspective: MapView.ViewPerspective.View3D
        buildingsVisibility: MapView.BuildingsVisibility.Show3D
        detailsQualityLevel: MapView.DetailsQualityLevel.Medium
        gestures: MapView.Gesture.Pan | MapView.Gesture.PanEnableVelocity | MapView.Gesture.Pinch | MapView.Gesture.Rotate | MapView.Gesture.Tilt
        Text {
            anchors.left: parent.left
            anchors.top: parent.top
            text: fpsCounter.fps
        }
        Component.onCompleted: startFollowingPosition() // follow current position
    }
}

However, the application isn't registering my inputs, such as moving around, and the time it takes to display my current location on the map is unreasonably long (around 7/8 minutes after launching the app). I attempted to code an app for testing purposes, and while my inputs are registered, the time it takes to show my current location remains excessively long. The function responsible for displaying the position is startFollowingPosition().

I tried to debug the app for 3/4 hours but I can't seem to find the issue with it.
Any suggestions are welcome
Thanks

WilliamH07

@WilliamH07 I just tried to open the app, and it's nearly instantaneous, and it immediately locates itself upon opening. However, 5 seconds later, after closing and reopening the app, it takes 7 to 8 minutes.