serialportwriter.cpp Example File

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** Copyright (C) 2013 Laszlo Papp <lpapp@kde.org>
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** This file is part of the QtSerialPort module of the Qt Toolkit.
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#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);
}