如何使用 Qt 从 iOS 连接到低功耗蓝牙设备？

Question

我正在创建一个 Qt 应用程序，我将 iOS 与 BLE 板连接起来。

void EasyConnect::startDiscovery()
{
    discoveryAgent = new QBluetoothDeviceDiscoveryAgent();
    discoveryAgent->setLowEnergyDiscoveryTimeout(5000);
    connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &EasyConnect::addDevice);
//    connect(discoveryAgent, QOverload<QBluetoothDeviceDiscoveryAgent::Error>::of(&QBluetoothDeviceDiscoveryAgent::error), this, &Device::deviceScanError);
//    connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished, this, &Device::deviceScanFinished);

    discoveryAgent->start(QBluetoothDeviceDiscoveryAgent::LowEnergyMethod);
}

在读取附近的 ble 组件后，我像这样连接 Android 设备：

void EasyConnect::connectToService(QBluetoothAddress address)
{
    m_control = new QLowEnergyController(address);
    connect(m_control, &QLowEnergyController::serviceDiscovered, this, &EasyConnect::serviceDiscovered);
//    connect(m_control, &QLowEnergyController::discoveryFinished,
//            this, &DeviceHandler::serviceScanDone);

    connect(m_control, static_cast<void (QLowEnergyController::*)(QLowEnergyController::Error)>(&QLowEnergyController::error),
            this, [this](QLowEnergyController::Error error) {
        Q_UNUSED(error);
        qDebug() << "Cannot connect to remote device.";
    });
    connect(m_control, &QLowEnergyController::connected, this, [this]() {

        qDebug() << "controller connect.";
        m_control->discoverServices();
    });
    connect(m_control, &QLowEnergyController::disconnected, this, [this]() {
        qDebug() << "controller disconneted.";
    });

    // Connect
    m_control->connectToDevice();

}

所以，在 Android 我从

得到了 mac 地址

QBluetoothDeviceInfo

但是 iOS 没有让我从 ble 得到 mac 地址，只有 UUID。我试图在文档上在线搜索，但我没有找到有关通过 uuid 连接 ios 和蓝牙服务的内容。

有一种模式可以在 mac 地址中转换 uuid 或者有一个库可以将服务 ble 设备和 ios 连接到 UUID。

Answer 1

你应该使用 QLowEnergyController 如果您将设备用作外围设备，请查看 this 方法。我创建了包含 QLowEnergyController 实例的 class 并使用它。这是我在我的应用程序中使用的部分代码：

void BLEAdvertisementCommunicator::startAdvertisingService() {
    mController = QLowEnergyController::createPeripheral(this);
    mAdvertisingData.setDiscoverability(QLowEnergyAdvertisingData::DiscoverabilityGeneral);
    mAdvertisingData.setIncludePowerLevel(false);
    mAdvertisingData.setLocalName("MyApplication");
    QLowEnergyServiceData serviceData;
    serviceData.setType(QLowEnergyServiceData::ServiceTypePrimary);
    serviceData.setUuid(QBluetoothUuid(serviceUuid));

    auto service = mController->addService(serviceData, mController);

    connect(mController, SIGNAL(connected()), this, SLOT(onDeviceConnected()));
    connect(mController, SIGNAL(disconnected()), this, SLOT(onDeviceDisconnected()));
    connect(mController, SIGNAL(error(QLowEnergyController::Error)), this, SLOT(onError(QLowEnergyController::Error)));
    mResponseData.setServices({QBluetoothUuid(serviceUuid)});
    mController->startAdvertising(QLowEnergyAdvertisingParameters(), mAdvertisingData,
                                  mResponseData);
}

Answer 2

无法通过扫描 iOS 获取 BLE 外围设备的 MAC 地址。这意味着您可能需要在 BLE 外围设备板上查找或添加一些额外数据，以便能够在 BLE 扫描期间识别它。

有关详细信息，请参阅此答案：Get MAC address of bluetooth low energy peripheral

如何使用 Qt 从 iOS 连接到低功耗蓝牙设备？

How to connect to a Bluetooth low energy device from iOS with Qt?

uuid

qt

android

bluetooth

ios