Qt Bluetooth communication

Pientashek

Hey,
I have an application based on Qt and QML, which is on the minicomputer (UpBoard). I need to add the ability to transfer data via Bluetooth to a mobile android application. The problem is that UpBoard does not have a built-in BT. And here the questions arise:

which BT module to choose? USB adapter or some HC-05 / HC-06? What are the differences between them?
how to detect the module "programmatically" in c ++ (Qt) and start sending data? Any example code?
I am a beginner in the topic of Bluetooth. Thank you in advance for your help!
Regards, Paul.

[Polish: https://forum.qt.io/topic/102441/qt-komunikacja-przez-bluetooth ~kshegunov]

KillerSmath

@Pientashek
Firstly, i suggest you to read a overview of Qt Bluetooth Api
https://doc.qt.io/qt-5/qtbluetooth-index.html
It will provide you a general knowledge of how Qt supports the Bluetooth technology.

The qt has examples of bluetooth comunication between devices, for example:
https://doc.qt.io/qt-5/qtbluetooth-btchat-example.html (C++)
https://doc.qt.io/qt-5/qtbluetooth-chat-example.html (Qml)

how to detect the module "programmatically" in c ++ (Qt)

You can check all avaliable bluetooth devices on your system by calling allDevices static method.

See a example (Using QGuiApplication):

#include <QGuiApplication>
#include <QBluetoothLocalDevice>
#include <QDebug>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QList<QBluetoothHostInfo> infos = QBluetoothLocalDevice::allDevices();

    if (infos.isEmpty()){
        qWarning() << "Missing Bluetooth local device. ";
        return 0;
    }

    for(const QBluetoothHostInfo &hostInfo : qAsConst(infos)){
        qDebug() << hostInfo.name() << hostInfo.address(); // name and mac address
    }

   // your code

    return app.exec();
}

Pientashek

@KillerSmath said in Qt Bluetooth communication:

#include <QGuiApplication>
#include <QBluetoothLocalDevice>
#include <QDebug>

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
QList<QBluetoothHostInfo> infos = QBluetoothLocalDevice::allDevices();

if (infos.isEmpty()){
    qWarning() << "Missing Bluetooth local device. ";
    return 0;
}

for(const QBluetoothHostInfo &hostInfo : qAsConst(infos)){
    qDebug() << hostInfo.name() << hostInfo.address(); // name and mac address

Thank You for answer, i'll try to do something :)

Minnie254

@KillerSmath said in Qt Bluetooth communication:

@Pientashek
Firstly, i suggest you to read a overview of Qt Bluetooth Api
https://doc.qt.io/qt-5/qtbluetooth-index.html
It will provide you a general knowledge of how Qt supports the Bluetooth technology.

The qt has examples of bluetooth comunication between devices, for example:
https://doc.qt.io/qt-5/qtbluetooth-btchat-example.html (C++)
https://doc.qt.io/qt-5/qtbluetooth-chat-example.html (Qml)

how to detect the module "programmatically" in c ++ (Qt)

You can check all avaliable bluetooth devices on your system by calling vidmate.

See a example (Using QGuiApplication):
#include <QGuiApplication>
#include <QBluetoothLocalDevice>
#include <QDebug>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QList<QBluetoothHostInfo> infos = QBluetoothLocalDevice::allDevices();

    if (infos.isEmpty()){
        qWarning() << "Missing Bluetooth local device. "; 
        return 0;
    }

    for(const QBluetoothHostInfo &hostInfo : qAsConst(infos)){
        qDebug() << hostInfo.name() << hostInfo.address(); // name and mac address
    }

   // your code

    return app.exec();
}

Happy to help! Thanks for leaving a comment.