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Dorian Zedler 2020-10-08 20:01:21 +02:00
parent 32d2e27a88
commit 8cc71db6e2
Signed by: dorian
GPG key ID: D3B255CB8BC7CD37
7 changed files with 874 additions and 0 deletions
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32
QBluetoothLeUart.pri Normal file
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!isEmpty(QBLUETOOTHLEUART_LIB):error("QBluetoothLeUart.pri already included")
QBLUETOOTHLEUART_LIB = 1
QBluetoothLeUart_QML {
QT += qml quickcontrols2
DEFINES += QBluetoothLeUart_QML
}
QT += core bluetooth
TEMPLATE = lib
CONFIG += staticlib
CONFIG += c++11
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
qbluetoothleuart.cpp \
qbluetoothleuartdevice.cpp
HEADERS += \
qbluetoothleuart.h \
qbluetoothleuartdevice.h
# Default rules for deployment.
unix {
target.path = $$[QT_INSTALL_PLUGINS]/generic
}
!isEmpty(target.path): INSTALLS += target

34
QBluetoothLeUart.pro Normal file
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!isEmpty(QBLUETOOTHLEUART_LIB):error("QBluetoothLeUart.pri already included")
QBLUETOOTHLEUART_LIB = 1
CONFIG += QBluetoothLeUart_QML
QBluetoothLeUart_QML {
QT += qml quickcontrols2
DEFINES += QBluetoothLeUart_QML
}
QT += core bluetooth
TEMPLATE = lib
CONFIG += staticlib
CONFIG += c++11
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
qbluetoothleuart.cpp \
qbluetoothleuartdevice.cpp
HEADERS += \
qbluetoothleuart.h \
qbluetoothleuartdevice.h
# Default rules for deployment.
unix {
target.path = $$[QT_INSTALL_PLUGINS]/generic
}
!isEmpty(target.path): INSTALLS += target

355
QBluetoothLeUart.pro.user Normal file
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<value type="bool" key="RunConfiguration.Arguments.multi">false</value>
<value type="QString" key="RunConfiguration.OverrideDebuggerStartup"></value>
<value type="bool" key="RunConfiguration.UseCppDebugger">false</value>
<value type="bool" key="RunConfiguration.UseCppDebuggerAuto">true</value>
<value type="bool" key="RunConfiguration.UseMultiProcess">false</value>
<value type="bool" key="RunConfiguration.UseQmlDebugger">false</value>
<value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
<value type="QString" key="RunConfiguration.WorkingDirectory"></value>
<value type="QString" key="RunConfiguration.WorkingDirectory.default"></value>
</valuemap>
<value type="int" key="ProjectExplorer.Target.RunConfigurationCount">1</value>
</valuemap>
</data>
<data>
<variable>ProjectExplorer.Project.TargetCount</variable>
<value type="int">1</value>
</data>
<data>
<variable>ProjectExplorer.Project.Updater.FileVersion</variable>
<value type="int">22</value>
</data>
<data>
<variable>Version</variable>
<value type="int">22</value>
</data>
</qtcreator>

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qbluetoothleuart.cpp Normal file
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#include "qbluetoothleuart.h"
QBluetoothLeUart::QBluetoothLeUart(QObject *parent) : QObject(parent)
{
currentBluetoothDevice = nullptr;
bluetoothController = nullptr;
bluetoothService = nullptr;
state = Idle;
/* 1 Step: Bluetooth LE Device Discovery */
this->bluetoothDeviceDiscoveryAgent = new QBluetoothDeviceDiscoveryAgent(this);
/* Device Discovery Initialization */
connect(this->bluetoothDeviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &QBluetoothLeUart::handleDeviceDiscovered);
connect(bluetoothDeviceDiscoveryAgent, SIGNAL(error(QBluetoothDeviceDiscoveryAgent::Error)),
this, SLOT(handleDeviceScanError(QBluetoothDeviceDiscoveryAgent::Error)));
connect(this->bluetoothDeviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished, this, &QBluetoothLeUart::handleScanFinished);
}
QBluetoothLeUart::~QBluetoothLeUart(){
}
void QBluetoothLeUart::init() {
#ifdef QBluetoothLeUart_QML
qmlRegisterUncreatableType<QBluetoothLeUartDevice>("de.itsblue.bluetoothleuart", 1, 0, "BluetoothDeviceInfo", "BluetoothDeviceInfo cannot be created");
qmlRegisterType<QBluetoothLeUart>("de.itsblue.bluetoothleuart", 1, 0, "BluetoothLeUART");
qRegisterMetaType<QBluetoothLeUart::BluetoothLeUartState>("QBluetoothLeUart::BluetoothLeUartState");
qRegisterMetaType<QBluetoothLeUart::BluetoothScanError>("QBluetoothLeUart::BluetoothScanError");
#endif
}
void QBluetoothLeUart::startScanningForDevices(){
foreach(QBluetoothLeUartDevice* oldDevice, this->availableDevices)
oldDevice->deleteLater();
this->availableDevices.clear();
setState(Scanning);
bluetoothDeviceDiscoveryAgent->start();
qDebug()<< "Searching for low energy devices..." ;
}
void QBluetoothLeUart::stopScanningForDevices() {
this->bluetoothDeviceDiscoveryAgent->stop();
this->setState(ScanFinished);
}
void QBluetoothLeUart::handleDeviceDiscovered(const QBluetoothDeviceInfo &device)
{
// Is it a BLE device?
if (device.coreConfigurations() & QBluetoothDeviceInfo::LowEnergyCoreConfiguration) {
//qWarning() << "Discovered BLE Device: name: " << device.name() << " Address: " << device.address().toString();
QBluetoothLeUartDevice *dev = new QBluetoothLeUartDevice(device, this);
availableDevices.append(dev);
emit this->foundNewDevice(dev);
emit this->avaliableDevicesChanged(this->availableDevices);
}
}
void QBluetoothLeUart::handleScanFinished()
{
if (availableDevices.size() == 0)
{
qWarning() << "No Low Energy devices found" << endl;
}
setState(ScanFinished);
}
QList<QBluetoothLeUartDevice*> QBluetoothLeUart::getAvailableDevices() {
return this->availableDevices;
}
void QBluetoothLeUart::handleDeviceScanError(QBluetoothDeviceDiscoveryAgent::Error error)
{
if (error == QBluetoothDeviceDiscoveryAgent::PoweredOffError)
emit this->scanningErrorOccured(AdapterTurnedOffError);
else if (error == QBluetoothDeviceDiscoveryAgent::InputOutputError)
emit this->scanningErrorOccured(InputOutputError);
else
emit this->scanningErrorOccured(UnknownError);
}
void QBluetoothLeUart::connectToDevice(QBluetoothLeUartDevice *device){
m_qvMeasurements.clear();
this->currentBluetoothDevice = device;
if (bluetoothController) {
bluetoothController->disconnectFromDevice();
delete bluetoothController;
bluetoothController = 0;
}
/* 2 Step: QLowEnergyController */
bluetoothController = new QLowEnergyController(currentBluetoothDevice->getDevice(), this);
bluetoothController ->setRemoteAddressType(QLowEnergyController::RandomAddress);
connect(this->bluetoothController, &QLowEnergyController::serviceDiscovered, this, &QBluetoothLeUart::handleServiceDiscovered);
connect(this->bluetoothController, &QLowEnergyController::discoveryFinished, this, &QBluetoothLeUart::handleServiceScanDone);
connect(bluetoothController, SIGNAL(error(QLowEnergyController::Error)),
this, SLOT(handleControllerError(QLowEnergyController::Error)));
connect(this->bluetoothController, &QLowEnergyController::connected, this, &QBluetoothLeUart::handleDeviceConnected);
connect(this->bluetoothController, &QLowEnergyController::disconnected, this, &QBluetoothLeUart::handleDeviceDisconnected);
/* Start connecting to device */
bluetoothController->connectToDevice();
setState(Connecting);
}
void QBluetoothLeUart::disconnectFromDevice() {
this->bluetoothController->disconnectFromDevice();
disconnect(this->bluetoothController, &QLowEnergyController::serviceDiscovered, this, &QBluetoothLeUart::handleServiceDiscovered);
disconnect(this->bluetoothController, &QLowEnergyController::discoveryFinished, this, &QBluetoothLeUart::handleServiceScanDone);
disconnect(bluetoothController, SIGNAL(error(QLowEnergyController::Error)),
this, SLOT(handleControllerError(QLowEnergyController::Error)));
disconnect(this->bluetoothController, &QLowEnergyController::connected, this, &QBluetoothLeUart::handleDeviceConnected);
disconnect(this->bluetoothController, &QLowEnergyController::disconnected, this, &QBluetoothLeUart::handleDeviceDisconnected);
this->bluetoothController->deleteLater();
}
void QBluetoothLeUart::handleDeviceDisconnected()
{
this->setState(Idle);
qDebug() << "UART service disconnected";
qWarning() << "Remote device disconnected";
}
void QBluetoothLeUart::handleDeviceConnected()
{
qDebug() << "Device connected";
bluetoothController->discoverServices();
setState(Connected);
}
void QBluetoothLeUart::handleControllerError(QLowEnergyController::Error error)
{
qDebug() << "Cannot connect to remote device.";
qWarning() << "Controller Error:" << error;
}
void QBluetoothLeUart::handleServiceDiscovered(const QBluetoothUuid &gatt){
qDebug() << "Found service with ID: " << gatt;
if(gatt==QBluetoothUuid(QUuid(UARTSERVICEUUID))){
foundValidUARTService =true;
qDebug() << "UART service found!";
}
}
void QBluetoothLeUart::handleServiceScanDone(){
delete bluetoothService;
bluetoothService=0;
if(foundValidUARTService){
qDebug() << "Connecting to UART service...";
bluetoothService = bluetoothController->createServiceObject(QBluetoothUuid(QUuid(UARTSERVICEUUID)),this);
}
if(!bluetoothService){
qDebug() <<"UART service not found";
this->disconnectFromDevice();
return;
}
/* 3 Step: Service Discovery */
connect(this->bluetoothService, &QLowEnergyService::stateChanged, this, &QBluetoothLeUart::handleServiceStateChange);
connect(this->bluetoothService, &QLowEnergyService::characteristicChanged, this, &QBluetoothLeUart::handleServiceCharacteristicChange);
connect(this->bluetoothService, &QLowEnergyService::descriptorWritten, this, &QBluetoothLeUart::handleServiceDescriptorWritten);
bluetoothService->discoverDetails();
setState(ServiceFound);
}
/* Slots for QLowEnergyService */
void QBluetoothLeUart::handleServiceStateChange(QLowEnergyService::ServiceState s)
{
// A descriptoc can only be written if the service is in the ServiceDiscovered state
switch (s) {
case QLowEnergyService::ServiceDiscovered:
{
//looking for the TX characteristic
const QLowEnergyCharacteristic TxChar = bluetoothService->characteristic(QBluetoothUuid(QUuid(TXUUID)));
if (!TxChar.isValid()){
qDebug() << "Tx characteristic not found";
this->disconnectFromDevice();
return;
}
//looking for the RX characteristic
const QLowEnergyCharacteristic RxChar = bluetoothService->characteristic(QBluetoothUuid(QUuid(RXUUID)));
if (!RxChar.isValid()) {
qDebug() << "Rx characteristic not found";
this->disconnectFromDevice();
return;
}
// Bluetooth LE spec Where a characteristic can be notified, a Client Characteristic Configuration descriptor
// shall be included in that characteristic as required by the Bluetooth Core Specification
// Tx notify is enabled
const QLowEnergyDescriptor m_notificationDescTx = TxChar.descriptor(QBluetoothUuid::ClientCharacteristicConfiguration);
if (m_notificationDescTx.isValid()) {
// enable notification
bluetoothService->writeDescriptor(m_notificationDescTx, QByteArray::fromHex("0100"));
setState(AcquireData);
emit this->connectedToDevice();
}
break;
}
default:
//nothing for now
break;
}
}
void QBluetoothLeUart::handleServiceCharacteristicChange(const QLowEnergyCharacteristic &c,const QByteArray &value)
{
// ignore any other characteristic change
if (c.uuid() != QBluetoothUuid(QUuid(TXUUID)))
return;
emit dataReceived((QString) value);
}
void QBluetoothLeUart::handleServiceDescriptorWritten(const QLowEnergyDescriptor &d,
const QByteArray &value)
{
if (d.isValid() && d == bluetoothTransmissionDescriptor && value == QByteArray("0000")) {
//disabled notifications -> assume disconnect intent
bluetoothController->disconnectFromDevice();
delete bluetoothService;
bluetoothService = 0;
}
}
void QBluetoothLeUart::sendData(QString s){
const QLowEnergyCharacteristic RxChar = bluetoothService->characteristic(QBluetoothUuid(QUuid(RXUUID)));
qDebug()<< s;
QByteArray Data;
Data.append(s);
bluetoothService->writeCharacteristic(RxChar, Data,QLowEnergyService::WriteWithoutResponse);
}
void QBluetoothLeUart::setState(QBluetoothLeUart::BluetoothLeUartState newState)
{
if (state == newState)
return;
state = newState;
emit stateChanged(newState);
}
QBluetoothLeUart::BluetoothLeUartState QBluetoothLeUart::getState() const {
return state;
}

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#ifndef BLUETOOTHLEUART_H
#define BLUETOOTHLEUART_H
#include <QBluetoothDeviceDiscoveryAgent>
#include <QBluetoothDeviceInfo>
#include <QLowEnergyController>
#include <QLowEnergyService>
#ifdef QBluetoothLeUart_QML
#include <QQmlApplicationEngine>
#endif
#include "qbluetoothleuartdevice.h"
#define UARTSERVICEUUID "6e400001-b5a3-f393-e0a9-e50e24dcca9e"
#define RXUUID "6e400002-b5a3-f393-e0a9-e50e24dcca9e"
#define TXUUID "6e400003-b5a3-f393-e0a9-e50e24dcca9e"
class QBluetoothLeUart : public QObject
{
Q_OBJECT
Q_PROPERTY(QList<QBluetoothLeUartDevice*> avaliableDevices READ getAvailableDevices NOTIFY avaliableDevicesChanged)
Q_PROPERTY(BluetoothLeUartState state READ getState NOTIFY stateChanged)
public:
enum BluetoothLeUartState {
Idle = 0,
Scanning,
ScanFinished,
Connecting,
Connected,
ServiceFound,
AcquireData
};
Q_ENUM(BluetoothLeUartState)
enum BluetoothScanError {
UnknownError,
AdapterTurnedOffError,
InputOutputError
};
Q_ENUM(BluetoothScanError);
QBluetoothLeUart(QObject *parent = nullptr);
~QBluetoothLeUart();
static void init();
private:
QBluetoothLeUartDevice *currentBluetoothDevice;
QBluetoothDeviceDiscoveryAgent *bluetoothDeviceDiscoveryAgent;
//QList<QObject*> m_qlDevices;
QList<QBluetoothLeUartDevice*> availableDevices;
//QList<QString> m_qlFoundDevices;
QVector<quint16> m_qvMeasurements;
QLowEnergyController *bluetoothController;
QLowEnergyService *bluetoothService;
QLowEnergyDescriptor bluetoothTransmissionDescriptor;
bool foundValidUARTService;
QBluetoothLeUart::BluetoothLeUartState state;
public slots:
/* Slots for user */
Q_INVOKABLE QBluetoothLeUart::BluetoothLeUartState getState() const;
Q_INVOKABLE void startScanningForDevices();
Q_INVOKABLE void stopScanningForDevices();
Q_INVOKABLE QList<QBluetoothLeUartDevice*> getAvailableDevices();
Q_INVOKABLE void connectToDevice(QBluetoothLeUartDevice *device);
Q_INVOKABLE void sendData(QString s);
Q_INVOKABLE void disconnectFromDevice();
private slots:
void setState(QBluetoothLeUart::BluetoothLeUartState newState);
/* Slots for QBluetothDeviceDiscoveryAgent */
void handleDeviceDiscovered(const QBluetoothDeviceInfo&);
void handleScanFinished();
void handleDeviceScanError(QBluetoothDeviceDiscoveryAgent::Error);
/* Slots for QLowEnergyController */
void handleServiceDiscovered(const QBluetoothUuid &);
void handleServiceScanDone();
void handleControllerError(QLowEnergyController::Error);
void handleDeviceConnected();
void handleDeviceDisconnected();
/* Slotes for QLowEnergyService */
void handleServiceStateChange(QLowEnergyService::ServiceState s);
void handleServiceCharacteristicChange(const QLowEnergyCharacteristic &c, const QByteArray &value);
void handleServiceDescriptorWritten(const QLowEnergyDescriptor &d, const QByteArray &value);
signals:
/* Signals for user */
void stateChanged(QBluetoothLeUart::BluetoothLeUartState newState);
void avaliableDevicesChanged(QList<QBluetoothLeUartDevice*> avaliableDevices);
void foundNewDevice(QBluetoothLeUartDevice* device);
void scanningErrorOccured(QBluetoothLeUart::BluetoothScanError error);
void dataReceived(QString s);
void connectedToDevice();
};
#endif // BLUETOOTHLEUART_H

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qbluetoothleuartdevice.cpp Normal file
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#include "qbluetoothleuartdevice.h"
QBluetoothLeUartDevice::QBluetoothLeUartDevice(QBluetoothDeviceInfo info, QObject *parent) : QObject(parent)
{
this->bluetoothDeviceInfo = info;
}
QString QBluetoothLeUartDevice::getName()
{
return bluetoothDeviceInfo.name();
}
QBluetoothDeviceInfo QBluetoothLeUartDevice::getDevice()
{
return bluetoothDeviceInfo;
}
QString QBluetoothLeUartDevice::getAddress()
{
#ifdef Q_OS_MAC
// workaround for Core Bluetooth:
return m_device->deviceUuid().toString();
#else
return bluetoothDeviceInfo.address().toString();
#endif
}
void QBluetoothLeUartDevice::setDevice(QBluetoothDeviceInfo device)
{
if(device != this->bluetoothDeviceInfo) {
bluetoothDeviceInfo = device;
emit deviceChanged();
}
}

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qbluetoothleuartdevice.h Normal file
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#ifndef DEVICEINFO_H
#define DEVICEINFO_H
#include <QString>
#include <QObject>
#include <qbluetoothdeviceinfo.h>
#include <qbluetoothaddress.h>
#include <qbluetoothuuid.h>
class QBluetoothLeUartDevice: public QObject
{
Q_OBJECT
Q_PROPERTY(QString name READ getName NOTIFY deviceChanged)
Q_PROPERTY(QString address READ getAddress NOTIFY deviceChanged)
public:
QBluetoothLeUartDevice(QBluetoothDeviceInfo device, QObject *parent = nullptr);
friend class QBluetoothLeUart;
QString getName();
QString getAddress();
protected:
QBluetoothDeviceInfo getDevice();
private:
void setDevice(QBluetoothDeviceInfo device);
QBluetoothDeviceInfo bluetoothDeviceInfo;
signals:
void deviceChanged();
};
#endif // DEVICEINFO_H