Unsolved How to force a Bluetooth pairing pin?
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Hey,
i am writing an apllication in qt on my laptop (Debian 8). This applicatio should connect to other devices like my android smartphones (4.4.2, 5.0.2, 6.0.0). This work great, i can pair and connect, but i want the smartphone and the application to show a pin for pairing. I looked in the documentation and it says
"This signal is only emitted for pairing requests issues by calling requestPairing()." (http://doc.qt.io/qt-5/qbluetoothlocaldevice.html#pairingDisplayConfirmation).So means this, QT tries first to connect without pin and will use the pin just if something goes wrong? How can i force it to show always a pin? (There is no need for a custom pin.) Some parts of my code:
localDevice = new QBluetoothLocalDevice(); connect(localDevice, SIGNAL(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing)), this, SLOT(pairingDone(QBluetoothAddress,QBluetoothLocalDevice::Pairing))); connect(localDevice, SIGNAL(pairingDisplayConfirmation(const QBluetoothAddress&, QString)), this, SLOT(pairingMyDisplayConfirmation(const QBluetoothAddress&, QString))); connect(localDevice, SIGNAL(pairingDisplayPinCode(QBluetoothAddress,QString)), this, SLOT(displayPin(QBluetoothAddress,QString)));
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void MainWindow::doPairingAction() { if (ui->list->count() == 0){ return; } if (ui->selectedMac->text().length() == 0 || ui->selectedName->text().length() == 0){ return; } QBluetoothAddress address (ui->selectedMac->text()); if (ui->pair->text() == "Pair") { qDebug() << "pair " << address; localDevice->requestPairing(address, QBluetoothLocalDevice::Paired); } else if (ui->pair->text() == "Unpair") { localDevice->requestPairing(address, QBluetoothLocalDevice::Unpaired); } } void MainWindow::pairingMyDisplayConfirmation(const QBluetoothAddress &address, QString pin){ qDebug() << "#PAIRING_DISPLAY_CONFIRMATION_PIN: " << pin << "for" << address; } void MainWindow::pairingDone(const QBluetoothAddress &address, QBluetoothLocalDevice::Pairing pairing) { QList<QListWidgetItem *> items = ui->list->findItems(address.toString(), Qt::MatchContains); if (pairing == QBluetoothLocalDevice::Paired || pairing == QBluetoothLocalDevice::AuthorizedPaired ) { for (int var = 0; var < items.count(); ++var) { QListWidgetItem *item = items.at(var); item->setTextColor(QColor(Qt::green)); setPairStatus(true); qDebug() << "pair " << address << "success"; } } else { for (int var = 0; var < items.count(); ++var) { QListWidgetItem *item = items.at(var); item->setTextColor(QColor(Qt::red)); setPairStatus(false); qDebug() << "pair " << address << "failed"; } } } void MainWindow::displayPin(const QBluetoothAddress &address, QString pin) { qDebug() << "#DISPLAY_PIN: " << pin << "for" << address; }
I know there is no dialog, but if i could debug the message for pin request or confirmation would be great.
Thank You.