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diff --git a/tradeshow/knx-demo/3d-Alexa-knx-demo/utils.h b/tradeshow/knx-demo/3d-Alexa-knx-demo/utils.h
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+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt 3D Studio Demos.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#include "demodatapoint.h"
+
+#include <QtKnx/QKnxAddress>
+#include <QtKnx/QKnxNpduFactory>
+
+QKnxTunnelFrame createRequestFrame(const QKnxAddress &address, const QKnxNpdu &npdu,
+    quint8 ctrl = 0xac, quint8 extCtrl = 0xe0)
+{
+    QKnxTunnelFrame frame(QKnxTunnelFrame::MessageCode::DataRequest);
+    frame.setControlField(QKnxControlField(ctrl));
+    frame.setExtendedControlField(QKnxExtendedControlField(extCtrl));
+    frame.setSourceAddress({ QKnxAddress::Type::Group, 0 });
+    frame.setDestinationAddress(address);
+    frame.setNpdu(npdu);
+    return frame;
+}
+
+void sendGroupValueWrite(QmlKnxTunnel &tunnel, const QKnxAddress &address,
+    const QByteArray &data, quint8 ctrl = 0xa4, quint8 extCtrl = 0xe0)
+{
+    tunnel.sendTunnelFrame(createRequestFrame(address,
+        QKnxNpduFactory::Multicast::createGroupValueWriteNpdu(data), ctrl, extCtrl));
+}
+
+void sendColorLedGroupValueWriteFrames(QmlKnxTunnel &tunnel, const DemoColorLed *const dpt)
+{
+    if (dpt) {
+        tunnel.sendTunnelFrame(createRequestFrame(QKnxAddress::createGroup(0, 0, 12),
+            QKnxNpduFactory::Multicast::createGroupValueWriteNpdu(dpt->redBytes())));
+
+        tunnel.sendTunnelFrame(createRequestFrame(QKnxAddress::createGroup(0, 0, 13),
+            QKnxNpduFactory::Multicast::createGroupValueWriteNpdu(dpt->greenBytes())));
+
+        tunnel.sendTunnelFrame(createRequestFrame(QKnxAddress::createGroup(0, 0, 14),
+            QKnxNpduFactory::Multicast::createGroupValueWriteNpdu(dpt->blueBytes())));
+    }
+}
+
+void initBoard(EtsDevelopmentBoard &board, QmlKnxTunnel &tunnel)
+{
+    auto npdu = QKnxNpduFactory::Multicast::createGroupValueReadNpdu();
+    for (int i = 1; i <= board.size(); ++i) {
+        if (i >= 9 && i <= 12)
+            continue; // skip red leds readings because they are not indicating the state!
+        if ((i == 7) || (i == 8) || (i == 16))
+            continue; // skip checking blinds state
+
+        if (QKnxAddress::createGroup(0, 0, 12) == board.getAddress(i)) {
+            tunnel.sendTunnelFrame(createRequestFrame(QKnxAddress::createGroup(0, 0, 12), npdu));
+            tunnel.sendTunnelFrame(createRequestFrame(QKnxAddress::createGroup(0, 0, 13), npdu));
+            tunnel.sendTunnelFrame(createRequestFrame(QKnxAddress::createGroup(0, 0, 14), npdu));
+        } else {
+            tunnel.sendTunnelFrame(createRequestFrame(board.getAddress(i), npdu, 0xa4));
+        }
+    }
+}
+
+#endif