Command Line Reader Sync Example

/**************************************************************************** ** ** 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 <QCoreApplication> #include <QSerialPort> #include <QStringList> #include <QTextStream> int main(int argc, char *argv[]) { QCoreApplication coreApplication(argc, argv); const int argumentCount = QCoreApplication::arguments().size(); const QStringList argumentList = QCoreApplication::arguments(); QTextStream standardOutput(stdout); if (argumentCount == 1) { standardOutput << QObject::tr("Usage: %1 <serialportname> [baudrate]") .arg(argumentList.first()) << endl; return 1; } QSerialPort serialPort; const QString serialPortName = argumentList.at(1); serialPort.setPortName(serialPortName); const int serialPortBaudRate = (argumentCount > 2) ? argumentList.at(2).toInt() : QSerialPort::Baud9600; serialPort.setBaudRate(serialPortBaudRate); if (!serialPort.open(QIODevice::ReadOnly)) { standardOutput << QObject::tr("Failed to open port %1, error: %2") .arg(serialPortName).arg(serialPort.error()) << endl; return 1; } QByteArray readData = serialPort.readAll(); while (serialPort.waitForReadyRead(5000)) readData.append(serialPort.readAll()); if (serialPort.error() == QSerialPort::ReadError) { standardOutput << QObject::tr("Failed to read from port %1, error: %2") .arg(serialPortName).arg(serialPort.errorString()) << endl; return 1; } else if (serialPort.error() == QSerialPort::TimeoutError && readData.isEmpty()) { standardOutput << QObject::tr("No data was currently available" " for reading from port %1") .arg(serialPortName) << endl; return 0; } standardOutput << QObject::tr("Data successfully received from port %1") .arg(serialPortName) << endl; standardOutput << readData << endl; return 0; }