serialportwriter.cpp Example File

cwriterasync/serialportwriter.cpp
/**************************************************************************** ** ** Copyright (C) 2013 Laszlo Papp <lpapp@kde.org> ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtSerialPort module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/
#include "serialportwriter.h" #include <QCoreApplication> QT_USE_NAMESPACE SerialPortWriter::SerialPortWriter(QSerialPort *serialPort, QObject *parent) : QObject(parent) , m_serialPort(serialPort) , m_standardOutput(stdout) , m_bytesWritten(0) { m_timer.setSingleShot(true); connect(m_serialPort, &QSerialPort::bytesWritten, this, &SerialPortWriter::handleBytesWritten); connect(m_serialPort, static_cast<void (QSerialPort::*)(QSerialPort::SerialPortError)>(&QSerialPort::error), this, &SerialPortWriter::handleError); connect(&m_timer, &QTimer::timeout, this, &SerialPortWriter::handleTimeout); } SerialPortWriter::~SerialPortWriter() { } void SerialPortWriter::handleBytesWritten(qint64 bytes) { m_bytesWritten += bytes; if (m_bytesWritten == m_writeData.size()) { m_bytesWritten = 0; m_standardOutput << QObject::tr("Data successfully sent to port %1").arg(m_serialPort->portName()) << endl; QCoreApplication::quit(); } } void SerialPortWriter::handleTimeout() { m_standardOutput << QObject::tr("Operation timed out for port %1, error: %2").arg(m_serialPort->portName()).arg(m_serialPort->errorString()) << endl; QCoreApplication::exit(1); } void SerialPortWriter::handleError(QSerialPort::SerialPortError serialPortError) { if (serialPortError == QSerialPort::WriteError) { m_standardOutput << QObject::tr("An I/O error occurred while writing the data to port %1, error: %2").arg(m_serialPort->portName()).arg(m_serialPort->errorString()) << endl; QCoreApplication::exit(1); } } void SerialPortWriter::write(const QByteArray &writeData) { m_writeData = writeData; qint64 bytesWritten = m_serialPort->write(writeData); if (bytesWritten == -1) { m_standardOutput << QObject::tr("Failed to write the data to port %1, error: %2").arg(m_serialPort->portName()).arg(m_serialPort->errorString()) << endl; QCoreApplication::exit(1); } else if (bytesWritten != m_writeData.size()) { m_standardOutput << QObject::tr("Failed to write all the data to port %1, error: %2").arg(m_serialPort->portName()).arg(m_serialPort->errorString()) << endl; QCoreApplication::exit(1); } m_timer.start(5000); }