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    • UNSOLVED Bluetooth Low Energy Scanner Example Notification Issue.
      Mobile and Embedded • ble notification notify low energy • • yavuz  

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    • UNSOLVED Segmentation Fault in BLE Heart Rate Game example adaptation code.
      Qt 6 • ble example qt6.2 • • DukeReddy  

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    • UNSOLVED Will Bluetooth SPP deprecate? And how to implement your own "SPP" in Bluetooth Low Energy?
      General and Desktop • bluetooth ble rfcomm spp • • pga4711  

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    • UNSOLVED Can calling a slot too often lead to delays in data transfer?
      General and Desktop • ble signals & slots • • SpaceToon  

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      @JonB Oh, I thought I had the same, fixed it, thanks
    • SOLVED Requirement for users to use a BLE application
      General and Desktop • linux windows bluetooth ble bluez • • TUStudi  

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      @sierdzio Thank you very much!
    • UNSOLVED Testing developed BLE App for Linux
      General and Desktop • linux deployment deploy ble • • TUStudi  

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      Hi @TUStudi, This virtual maschine need to support Bluetooth Low Energy. If you have an USB bluetooth dongle/adapter, than you can most likely inject this dongle into the virtual machine and use it there. Note that even bluetooth adapters built into your laptop may be an USB devices and could work that way. So I'd say it depends on a test. Regards
    • UNSOLVED What is the purpose of QBluetoothDeviceDiscoveryAgent::setLowEnergyDiscoveryTimeout?
      General and Desktop • linux bluetooth low e ble bluez5 • • pohlondrej.1  

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    • UNSOLVED BLE on Windows 10 : wrong DataCompleteness value
      General and Desktop • windows 10 ble qbluetooth • • sfeutrier  

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    • UNSOLVED Unable to update Bluetooth connection paramaters. QT BLE
      General and Desktop • c++ bluetooth ble • • ZainMehdi  

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    • UNSOLVED Qt Bluetooth in Windows: QBluetoothDeviceDiscoveryAgent::PoweredOffError not emitted
      General and Desktop • bluetooth bluetooth low e ble bluetoothapis qtbluetooth • • harip  

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      Ah ok sorry! Indeed last time I worked with BT it was with older Qt version.
    • UNSOLVED Bluetooth Low Energy: State 'ServiceDiscovered' is never reached
      General and Desktop • signal & slot bluetooth bluetooth low e ble • • SpaceToon  

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      The QTBluetooth Central API is not supported on any platform. see the first table in Qt Bluetooth
    • SOLVED Bluetooth Low Energy Scanner: Discover Service Details
      General and Desktop • bluetooth low e ble scanner • • SpaceToon  

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      i had same error in my project. this page helped me -> https://forum.qt.io/topic/117241/why-qlowenergyservice-unknownerror/2 i have changed my code from connect(controller, &QLowEnergyController::discoveryFinished, this, &Device::serviceScanDone); to connect(controller, &QLowEnergyController::discoveryFinished, this, &Device::serviceScanDone,Qt::QueuedConnection); and problem disappeared.
    • SOLVED SLOT is not executed after successfully contected to BLE-Device
      General and Desktop • signal & slot bluetooth ble signals slots • • SpaceToon  

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      @J-Hilk Thank you, JonB and you were right. For me it actually makes more sense that e.g. at first you connect to the device and then you say "okay, if the signal "connected" is emitted then call the function x.y.". So after changing it, it works now. However, after getting all services and calling "service->discoverDetails" and then "service->characteristics" the characteristics List is empty. After connection is successfull: void Scanner::startServiceDiscovery(){ connect(controller, &QLowEnergyController::discoveryFinished, this, &Scanner::discoveryFinished); controller->discoverServices(); } void Scanner::discoveryFinished(){ qDebug() << "\nService Discovery finished. Following Services found:\n"; QList<QBluetoothUuid> serviceList = controller->services(); for(QBluetoothUuid &sl : serviceList){ qDebug() << controller->createServiceObject(sl)->serviceName() << "Uuid: " << sl; } uartService = controller->createServiceObject(adafruitServiceUuid); qDebug() <<"\nChose the following service: " << (*uartService).serviceName(); connect(uartService, &QLowEnergyService::stateChanged, this, &Scanner::printChars); qDebug() << uartService->state(); //here the state is QLowEnergyService::DiscoveryRequired uartService->discoverDetails(); } void Scanner::printChars(){ qDebug() << uartService->state(); // here the state is now QLowEnergyService::DiscoveringServices const QList<QLowEnergyCharacteristic> chars = uartService->characteristics(); qDebug()<< chars.size(); //however the list size is 0 for (const QLowEnergyCharacteristic &ch : chars) { qDebug() << &ch; } } btw: I know that there is an example for BLE Scanner. But for a project, I want to create an own desktop application which connnects to a peripheral and live plots the data which are received from the sensor with qcustomplot. So I need a QWidget Application because QCustomPlot is a widget...
    • UNSOLVED bluetooth LE receive bandwidth
      General and Desktop • performance ble threads • • efiLabs  

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      @efiLabs I am facing same kind of problem. I working on my linux laptop (ubuntu 18.0). I have run an application in cetral mode of ble. When this application is started to receive the data it receive some 20 packets of 509 bytes chunks and then after it hangs. When i googled it, i realized it may be the problem of throughput. Is there any api in Qt to tell the peripheral device to send the data in low throughput ?
    • UNSOLVED BluetoothDiscoveryModel.FullServiceDiscovery issue?
      QML and Qt Quick • qml bluetooth ble • • JesperWe  

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    • UNSOLVED Bluetooth Low Energy example doesn't work
      General and Desktop • windows 10 bluetooth ble qt 5.10.0 low energy • • Ashi  

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      @Ashi Sorry, I'm too late to answer this post. I think you should try with msvc compiler, not mingw
    • UNSOLVED BLE notification
      General and Desktop • ble qlowenergychara qlowenergydescr • • helenebro  

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      @helenebro I managed to get to the bottom of the problem (it is due to a firmware bug in these BLE low-cost modules), see my bug report under https://bugreports.qt.io/browse/QTBUG-83363.
    • UNSOLVED GATT server definition
      General and Desktop • bluetooth bluetooth low e ble • • Mark81  

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    • UNSOLVED How to receive Apple Notifications
      General and Desktop • bluetooth bluetooth low e ble apple push notificati • • Mark81  

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      Then I'd recommend asking this on the interest mailing list. You'll find there the QtBluetooth module maintainers/developers.
    • UNSOLVED BLE Beacon/PXM example
      General and Desktop • bluetooth ble example • • Mark81  

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    • UNSOLVED Strange Error in qtandroid BLE Example (LowEnergyScanner)
      Mobile and Embedded • android bluetooth low e ble qt5.5.1 • • raosaif  

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    • UNSOLVED Does not receive anything BluetoothLowEnergy
      Mobile and Embedded • bluetooth ble • • MartinCZ  

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      Hi all again, I made one more test and I found that in case of active polling of QLowEnergyCharacteristic.value() I can see (probably) all data which were sent from remote side. From all these tests it seems to be the characteristicsChanged signal which is not emitted / accepted.
    • UNSOLVED Bluetooth BLE as peripheral device
      Mobile and Embedded • bluetooth ble • • Hal1  

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      Hi and welcome to devnet, I'd recommend asking this question on the interest mailing list. You'll find there Qt's developers/maintainers. This forum is more user oriented.
    • UNSOLVED How do I scan for specific BLE service UUIDs
      Mobile and Embedded • bluetooth bluetooth low e ble uuid btle • • ulso  

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      Hi, There might just be not much people on this forum that use the QtBluetooth module. In that case, there's always the interest mailing list where you can find Qt's developers/maintainers.
    • UNSOLVED btscanner example does not work, cannot find BLE host device
      General and Desktop • bluetooth ble example btscanner host device • • Sen Li  

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      Yep It's not supported on Windows. Easiest is to use Ubuntu. You should be able to install it in for example VirtualBox and share the USB device there.
    • Qt Bluetooth stack performance
      Mobile and Embedded • android bluetooth bluetooth low e performance ble discovery agent low energy cont • • JRoorda  

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    • Connecting to multiple Bluetooth Low Energy peripherals
      General and Desktop • linux bluetooth ble limit • • Andi  

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    • Bluetooth LE on Windows
      General and Desktop • windows bluetooth ble • • cidadao  

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    • How can I connect program for android on Qt and Cypress PSoC, using BLE?
      Mobile and Embedded • android bluetooth ble psoc cypress • • ADR-007  

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    • [SOLVED]Bluetooth low energy on iOS and Android
      Mobile and Embedded • android ios bluetooth low e ble • • NGV1  

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      Thank you for answer, I'll look forwad this version !
    • Is it possible to build Qt 5.4 for Edison?
      Mobile and Embedded • bluetooth yocto ble qt 5.4.0 • • avrik  

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    • Qt 5.4.1 for Android BLE device detection
      Mobile and Embedded • ble • • alexsho  

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