characteristicinfo.cpp Example File

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 #include "characteristicinfo.h"
 #include "qbluetoothuuid.h"
 #include <QByteArray>

 CharacteristicInfo::CharacteristicInfo(const QLowEnergyCharacteristic &characteristic):
     m_characteristic(characteristic)
 {
 }

 void CharacteristicInfo::setCharacteristic(const QLowEnergyCharacteristic &characteristic)
 {
     m_characteristic = characteristic;
     emit characteristicChanged();
 }

 QString CharacteristicInfo::getName() const
 {
     QString name = m_characteristic.name();
     if (!name.isEmpty())
         return name;

     // find descriptor with CharacteristicUserDescription
     const QList<QLowEnergyDescriptor> descriptors = m_characteristic.descriptors();
     for (const QLowEnergyDescriptor &descriptor : descriptors) {
         if (descriptor.type() == QBluetoothUuid::CharacteristicUserDescription) {
             name = descriptor.value();
             break;
         }
     }

     if (name.isEmpty())
         name = "Unknown";

     return name;
 }

 QString CharacteristicInfo::getUuid() const
 {
     const QBluetoothUuid uuid = m_characteristic.uuid();
     bool success = false;
     quint16 result16 = uuid.toUInt16(&success);
     if (success)
         return QStringLiteral("0x") + QString::number(result16, 16);

     quint32 result32 = uuid.toUInt32(&success);
     if (success)
         return QStringLiteral("0x") + QString::number(result32, 16);

     return uuid.toString().remove(QLatin1Char('{')).remove(QLatin1Char('}'));
 }

 QString CharacteristicInfo::getValue() const
 {
     // Show raw string first and hex value below
     QByteArray a = m_characteristic.value();
     QString result;
     if (a.isEmpty()) {
         result = QStringLiteral("<none>");
         return result;
     }

     result = a;
     result += QLatin1Char('\n');
     result += a.toHex();

     return result;
 }

 QString CharacteristicInfo::getHandle() const
 {
     return QStringLiteral("0x") + QString::number(m_characteristic.handle(), 16);
 }

 QString CharacteristicInfo::getPermission() const
 {
     QString properties = "( ";
     uint permission = m_characteristic.properties();
     if (permission & QLowEnergyCharacteristic::Read)
         properties += QStringLiteral(" Read");
     if (permission & QLowEnergyCharacteristic::Write)
         properties += QStringLiteral(" Write");
     if (permission & QLowEnergyCharacteristic::Notify)
         properties += QStringLiteral(" Notify");
     if (permission & QLowEnergyCharacteristic::Indicate)
         properties += QStringLiteral(" Indicate");
     if (permission & QLowEnergyCharacteristic::ExtendedProperty)
         properties += QStringLiteral(" ExtendedProperty");
     if (permission & QLowEnergyCharacteristic::Broadcasting)
         properties += QStringLiteral(" Broadcast");
     if (permission & QLowEnergyCharacteristic::WriteNoResponse)
         properties += QStringLiteral(" WriteNoResp");
     if (permission & QLowEnergyCharacteristic::WriteSigned)
         properties += QStringLiteral(" WriteSigned");
     properties += " )";
     return properties;
 }

 QLowEnergyCharacteristic CharacteristicInfo::getCharacteristic() const
 {
     return m_characteristic;
 }