Qt Bluetooth 개요

QBluetoothLocalDevice localDevice;
QString localDeviceName;

// Check if Bluetooth is available on this device
if (localDevice.isValid()) {

    // Turn Bluetooth on
    localDevice.powerOn();

    // Read local device name
    localDeviceName = localDevice.name();

    // Make it visible to others
    localDevice.setHostMode(QBluetoothLocalDevice::HostDiscoverable);

    // Get connected devices
    QList<QBluetoothAddress> remotes;
    remotes = localDevice.connectedDevices();
}

void MyClass::startDeviceDiscovery()
{

    // 검색 에이전트를 생성하고 해당 신호에 연결합니다
    QBluetoothDeviceDiscoveryAgent*discoveryAgent = new QBluetoothDeviceDiscoveryAgent(this);
    connect(discoveryAgent, SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)),
            this, SLOT(deviceDiscovered(QBluetoothDeviceInfo)));

    // 탐색 시작
    discoveryAgent->start();

    //...
}

// 로컬 슬롯에서 발견된 장치에 대한 정보를 읽습니다
void MyClass::deviceDiscovered(const QBluetoothDeviceInfo&device)
{
    qDebug() << "Found new device:" << device.name() << '(' << device.address().toString() << ')';
}

rfcommServer = new QBluetoothServer(QBluetoothServiceInfo::RfcommProtocol, this);
connect(rfcommServer, &QBluetoothServer::newConnection,
        this, QOverload<>::of(&ChatServer::clientConnected));
bool result = rfcommServer->listen(localAdapter);
if (!result) {
    qWarning() << "Cannot bind chat server to" << localAdapter.toString();
   return;
}

void ChatClient::startClient(const QBluetoothServiceInfo&remoteService)
{
    if (socket)
        return;

    // 서비스에 연결
    socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
    qDebug() << "Create socket";
    socket->connectToService(remoteService);
    qDebug() << "ConnectToService done";

    connect(socket, &QBluetoothSocket::readyRead, this, &ChatClient::readSocket);
    connect(socket, &QBluetoothSocket::connected, this, QOverload<>::of(&ChatClient::connected));
    connect(socket, &QBluetoothSocket::disconnected, this, &ChatClient::disconnected);
    connect(socket, &QBluetoothSocket::errorOccurred, this, &ChatClient::onSocketErrorOccurred);
}