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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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,
InvalidResponseError
};
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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