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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSerialBus module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMODBUSDEVICE_H
#define QMODBUSDEVICE_H
#include <QtCore/qobject.h>
#include <QtCore/qiodevice.h>
#include <QtSerialBus/qtserialbusglobal.h>
QT_BEGIN_NAMESPACE
class QModbusDevicePrivate;
class Q_SERIALBUS_EXPORT QModbusDevice : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QModbusDevice)
public:
enum Error {
NoError,
ReadError,
WriteError,
ConnectionError,
ConfigurationError,
TimeoutError,
ProtocolError,
ReplyAbortedError,
UnknownError
};
Q_ENUM(Error)
enum State {
UnconnectedState,
ConnectingState,
ConnectedState,
ClosingState
};
Q_ENUM(State)
enum ConnectionParameter {
SerialPortNameParameter,
SerialParityParameter,
SerialBaudRateParameter,
SerialDataBitsParameter,
SerialStopBitsParameter,
NetworkPortParameter,
NetworkAddressParameter
};
Q_ENUM(ConnectionParameter)
enum IntermediateError
{
ResponseCrcError,
ResponseRequestMismatch
};
Q_ENUM(IntermediateError)
explicit QModbusDevice(QObject *parent = nullptr);
~QModbusDevice();
QVariant connectionParameter(ConnectionParameter parameter) const;
void setConnectionParameter(ConnectionParameter parameter, const QVariant &value);
bool connectDevice();
void disconnectDevice();
State state() const;
Error error() const;
QString errorString() const;
QIODevice *device() const;
Q_SIGNALS:
void errorOccurred(QModbusDevice::Error error);
void stateChanged(QModbusDevice::State state);
protected:
QModbusDevice(QModbusDevicePrivate &dd, QObject *parent = nullptr);
void setState(QModbusDevice::State newState);
void setError(const QString &errorText, QModbusDevice::Error error);
virtual bool open() = 0;
virtual void close() = 0;
};
Q_DECLARE_TYPEINFO(QModbusDevice::Error, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(QModbusDevice::State, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(QModbusDevice::ConnectionParameter, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(QModbusDevice::IntermediateError, Q_PRIMITIVE_TYPE);
QT_END_NAMESPACE
#endif // QMODBUSDEVICE_H
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