main.cpp 范例文件

heartrate-server/main.cpp
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#include <QtBluetooth/qlowenergyadvertisingdata.h> #include <QtBluetooth/qlowenergyadvertisingparameters.h> #include <QtBluetooth/qlowenergycharacteristic.h> #include <QtBluetooth/qlowenergycharacteristicdata.h> #include <QtBluetooth/qlowenergydescriptordata.h> #include <QtBluetooth/qlowenergycontroller.h> #include <QtBluetooth/qlowenergyservice.h> #include <QtBluetooth/qlowenergyservicedata.h> #include <QtCore/qbytearray.h> #include <QtCore/qcoreapplication.h> #include <QtCore/qlist.h> #include <QtCore/qloggingcategory.h> #include <QtCore/qscopedpointer.h> #include <QtCore/qtimer.h> int main(int argc, char *argv[]) { //QLoggingCategory::setFilterRules(QStringLiteral("qt.bluetooth* = true")); QCoreApplication app(argc, argv); QLowEnergyAdvertisingData advertisingData; advertisingData.setDiscoverability(QLowEnergyAdvertisingData::DiscoverabilityGeneral); advertisingData.setIncludePowerLevel(true); advertisingData.setLocalName("HeartRateServer"); advertisingData.setServices(QList<QBluetoothUuid>() << QBluetoothUuid::HeartRate); QLowEnergyCharacteristicData charData; charData.setUuid(QBluetoothUuid::HeartRateMeasurement); charData.setValue(QByteArray(2, 0)); charData.setProperties(QLowEnergyCharacteristic::Notify); const QLowEnergyDescriptorData clientConfig(QBluetoothUuid::ClientCharacteristicConfiguration, QByteArray(2, 0)); charData.addDescriptor(clientConfig); QLowEnergyServiceData serviceData; serviceData.setType(QLowEnergyServiceData::ServiceTypePrimary); serviceData.setUuid(QBluetoothUuid::HeartRate); serviceData.addCharacteristic(charData); const QScopedPointer<QLowEnergyController> leController(QLowEnergyController::createPeripheral()); const QScopedPointer<QLowEnergyService> service(leController->addService(serviceData)); leController->startAdvertising(QLowEnergyAdvertisingParameters(), advertisingData, advertisingData); QTimer heartbeatTimer; quint8 currentHeartRate = 60; enum ValueChange { ValueUp, ValueDown } valueChange = ValueUp; const auto heartbeatProvider = [&service, &currentHeartRate, &valueChange]() { QByteArray value; value.append(char(0)); // Flags that specify the format of the value. value.append(char(currentHeartRate)); // Actual value. QLowEnergyCharacteristic characteristic = service->characteristic(QBluetoothUuid::HeartRateMeasurement); Q_ASSERT(characteristic.isValid()); service->writeCharacteristic(characteristic, value); // Potentially causes notification. if (currentHeartRate == 60) valueChange = ValueUp; else if (currentHeartRate == 100) valueChange = ValueDown; if (valueChange == ValueUp) ++currentHeartRate; else --currentHeartRate; }; QObject::connect(&heartbeatTimer, &QTimer::timeout, heartbeatProvider); heartbeatTimer.start(1000); auto reconnect = [&leController, advertisingData]() { leController->startAdvertising(QLowEnergyAdvertisingParameters(), advertisingData, advertisingData); }; QObject::connect(leController.data(), &QLowEnergyController::disconnected, reconnect); return app.exec(); }