在使用Qt的QBluetooth库进行主动连接时,需要指定一个PIN码(Personal Identification Number)来建立安全连接。下面是一个简单的示例代码,展示如何使用QBluetoothSocket类进行主动连接,并设置PIN码:
#include <QBluetoothSocket>
#include <QBluetoothAddress>
#include <QLowEnergyController>
//...
QString targetDeviceAddress = "00:11:22:33:44:55"; // 目标设备的MAC地址
QString pinCode = "1234"; // 自定义的PIN码
// 创建蓝牙Socket对象
QBluetoothSocket socket(QBluetoothServiceInfo::RfcommProtocol);
QObject::connect(&socket, &QBluetoothSocket::connected, this, [](){
qDebug() << "成功建立蓝牙连接";
});
QObject::connect(&socket, QOverload<QBluetoothSocket::SocketError>::of(&QBluetoothSocket::error),
this, [](QBluetoothSocket::SocketError error){
qDebug() << "蓝牙连接错误:" << error;
});
// 设置目标设备地址
QBluetoothAddress address(targetDeviceAddress);
// 连接到远程设备
socket.connectToService(address, QBluetoothUuid(), QIODevice::ReadWrite);
// 请求PIN码输入
QLowEnergyController controller(address);
controller.setRemoteAddressType(QLowEnergyController::RandomAddress);
controller.requestAuthentication(QLowEnergyController::MitmProtectionRequired);
controller.startAuthentication(QLowEnergyController::InputOutput);
// 通过信号槽监听用户输入的PIN码
QObject::connect(&controller, &QLowEnergyController::authenticationRequest,
this, [&pinCode](const QSharedPointer<QLowEnergyAuthenticationRequirement> &req){
if (req->type() == QLowEnergyAuthenticationRequirement::MitmNumericComparison) {
req->setAuthorizationCode(pinCode.toInt());
}
});
请注意,此示例仅展示了如何使用QBluetoothSocket进行连接和设置PIN码。具体的实现可能会因设备和操作系统而有所差异,需要根据实际情况进行适配和调整。
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