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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#ifndef TRKDEVICE_H
#define TRKDEVICE_H
#include "callback.h"
#include <QtCore/QObject>
#include <QtCore/QVariant>
#include <QtCore/QByteArray>
#include <QtCore/QSharedPointer>
QT_BEGIN_NAMESPACE
class QIODevice;
QT_END_NAMESPACE
namespace trk {
struct TrkResult;
struct TrkMessage;
struct TrkDevicePrivate;
/* TrkDevice: Implements a Windows COM or Linux device for
* Trk communications. Provides synchronous write and asynchronous
* read operation.
* The serialFrames property specifies whether packets are encapsulated in
* "0x90 <length>" frames, which is currently the case for serial ports.
* Contains a write message queue allowing
* for queueing messages with a notification callback. If the message receives
* an ACK, the callback is invoked.
* The special message TRK_WRITE_QUEUE_NOOP_CODE code can be used for synchronisation.
* The respective message will not be sent, the callback is just invoked. */
enum { TRK_WRITE_QUEUE_NOOP_CODE = 0x7f };
typedef trk::Callback<const TrkResult &> TrkCallback;
class TrkDevice : public QObject
{
Q_OBJECT
Q_PROPERTY(bool serialFrame READ serialFrame WRITE setSerialFrame)
Q_PROPERTY(bool verbose READ verbose WRITE setVerbose)
public:
explicit TrkDevice(QObject *parent = 0);
virtual ~TrkDevice();
bool open(const QString &port, QString *errorMessage);
bool isOpen() const;
QString errorString() const;
bool serialFrame() const;
void setSerialFrame(bool f);
int verbose() const;
void setVerbose(int b);
// Enqueue a message with a notification callback.
void sendTrkMessage(unsigned char code,
TrkCallback callBack = TrkCallback(),
const QByteArray &data = QByteArray(),
const QVariant &cookie = QVariant());
// Enqeue an initial ping
void sendTrkInitialPing();
// Send an Ack synchronously, bypassing the queue
bool sendTrkAck(unsigned char token);
signals:
void messageReceived(const trk::TrkResult &result);
// Emitted with the contents of messages enclosed in 07e, not for log output
void rawDataReceived(const QByteArray &data);
void error(const QString &msg);
void logMessage(const QString &msg);
private slots:
void slotMessageReceived(const trk::TrkResult &result, const QByteArray &a);
protected slots:
void emitError(const QString &msg);
void emitLogMessage(const QString &msg);
public slots:
void close();
private:
void readMessages();
TrkDevicePrivate *d;
};
} // namespace trk
#endif // TRKDEVICE_H
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