| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtSerialBus module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL3$ |
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| ** GNU General Public License Usage |
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| ****************************************************************************/ |
| |
| #ifndef QMODBUSCLIENT_P_H |
| #define QMODBUSCLIENT_P_H |
| |
| #include <QtCore/qtimer.h> |
| #include <QtSerialBus/qmodbusclient.h> |
| #include <QtSerialBus/qmodbuspdu.h> |
| |
| #include <private/qmodbusdevice_p.h> |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| QT_BEGIN_NAMESPACE |
| |
| class Q_AUTOTEST_EXPORT QModbusClientPrivate : public QModbusDevicePrivate |
| { |
| Q_DECLARE_PUBLIC(QModbusClient) |
| |
| public: |
| QModbusReply *sendRequest(const QModbusRequest &request, int serverAddress, |
| const QModbusDataUnit *const unit); |
| QModbusRequest createReadRequest(const QModbusDataUnit &data) const; |
| QModbusRequest createWriteRequest(const QModbusDataUnit &data) const; |
| QModbusRequest createRWRequest(const QModbusDataUnit &read, const QModbusDataUnit &write) const; |
| |
| bool processResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| |
| bool processReadCoilsResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| bool processReadDiscreteInputsResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| bool collateBits(const QModbusPdu &pdu, QModbusDataUnit::RegisterType type, QModbusDataUnit *data); |
| |
| bool processReadHoldingRegistersResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| bool processReadInputRegistersResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| bool collateBytes(const QModbusPdu &pdu, QModbusDataUnit::RegisterType type, QModbusDataUnit *data); |
| |
| bool processWriteSingleCoilResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| bool processWriteSingleRegisterResponse(const QModbusResponse &response, |
| QModbusDataUnit *data); |
| bool collateSingleValue(const QModbusPdu &pdu, QModbusDataUnit::RegisterType type, |
| QModbusDataUnit *data); |
| |
| bool processWriteMultipleCoilsResponse(const QModbusResponse &response, QModbusDataUnit *data); |
| bool processWriteMultipleRegistersResponse(const QModbusResponse &response, |
| QModbusDataUnit *data); |
| bool collateMultipleValues(const QModbusPdu &pdu, QModbusDataUnit::RegisterType type, |
| QModbusDataUnit *data); |
| |
| bool processReadWriteMultipleRegistersResponse(const QModbusResponse &response, |
| QModbusDataUnit *data); |
| |
| virtual QModbusReply *enqueueRequest(const QModbusRequest &, int, const QModbusDataUnit &, |
| QModbusReply::ReplyType) { |
| return nullptr; |
| } |
| // TODO: Review once we have a transport layer in place. |
| virtual bool isOpen() const { return false; } |
| |
| int m_numberOfRetries = 3; |
| int m_responseTimeoutDuration = 1000; |
| |
| struct QueueElement { |
| QueueElement() = default; |
| QueueElement(QModbusReply *r, const QModbusRequest &req, const QModbusDataUnit &u, int num, |
| int timeout = -1) |
| : reply(r), requestPdu(req), unit(u), numberOfRetries(num) |
| { |
| if (timeout >= 0) { |
| // always the case for TCP |
| timer = QSharedPointer<QTimer>::create(); |
| timer->setSingleShot(true); |
| timer->setInterval(timeout); |
| } |
| } |
| bool operator==(const QueueElement &other) const { |
| return reply == other.reply; |
| } |
| |
| QPointer<QModbusReply> reply; |
| QModbusRequest requestPdu; |
| QModbusDataUnit unit; |
| int numberOfRetries; |
| QSharedPointer<QTimer> timer; |
| QByteArray adu; |
| qint64 bytesWritten = 0; |
| qint32 m_timerId = INT_MIN; |
| }; |
| void processQueueElement(const QModbusResponse &pdu, const QueueElement &element); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QMODBUSCLIENT_P_H |
| |