diff options
Diffstat (limited to 'examples/serialport/blockingsender/senderthread.cpp')
-rw-r--r-- | examples/serialport/blockingsender/senderthread.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/examples/serialport/blockingsender/senderthread.cpp b/examples/serialport/blockingsender/senderthread.cpp new file mode 100644 index 0000000..afe9286 --- /dev/null +++ b/examples/serialport/blockingsender/senderthread.cpp @@ -0,0 +1,163 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com> +** 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 "senderthread.h" + +#include <QSerialPort> +#include <QTime> + +SenderThread::SenderThread(QObject *parent) : + QThread(parent) +{ +} + +//! [0] +SenderThread::~SenderThread() +{ + m_mutex.lock(); + m_quit = true; + m_cond.wakeOne(); + m_mutex.unlock(); + wait(); +} +//! [0] + +//! [1] //! [2] +void SenderThread::transaction(const QString &portName, int waitTimeout, const QString &request) +{ +//! [1] + const QMutexLocker locker(&m_mutex); + m_portName = portName; + m_waitTimeout = waitTimeout; + m_request = request; +//! [3] + if (!isRunning()) + start(); + else + m_cond.wakeOne(); +} +//! [2] //! [3] + +//! [4] +void SenderThread::run() +{ + bool currentPortNameChanged = false; + + m_mutex.lock(); +//! [4] //! [5] + QString currentPortName; + if (currentPortName != m_portName) { + currentPortName = m_portName; + currentPortNameChanged = true; + } + + int currentWaitTimeout = m_waitTimeout; + QString currentRequest = m_request; + m_mutex.unlock(); +//! [5] //! [6] + QSerialPort serial; + + if (currentPortName.isEmpty()) { + emit error(tr("No port name specified")); + return; + } + + while (!m_quit) { +//![6] //! [7] + if (currentPortNameChanged) { + serial.close(); + serial.setPortName(currentPortName); + + if (!serial.open(QIODevice::ReadWrite)) { + emit error(tr("Can't open %1, error code %2") + .arg(m_portName).arg(serial.error())); + return; + } + } +//! [7] //! [8] + // write request + const QByteArray requestData = currentRequest.toUtf8(); + serial.write(requestData); + if (serial.waitForBytesWritten(m_waitTimeout)) { +//! [8] //! [10] + // read response + if (serial.waitForReadyRead(currentWaitTimeout)) { + QByteArray responseData = serial.readAll(); + while (serial.waitForReadyRead(10)) + responseData += serial.readAll(); + + const QString response = QString::fromUtf8(responseData); +//! [12] + emit this->response(response); +//! [10] //! [11] //! [12] + } else { + emit timeout(tr("Wait read response timeout %1") + .arg(QTime::currentTime().toString())); + } +//! [9] //! [11] + } else { + emit timeout(tr("Wait write request timeout %1") + .arg(QTime::currentTime().toString())); + } +//! [9] //! [13] + m_mutex.lock(); + m_cond.wait(&m_mutex); + if (currentPortName != m_portName) { + currentPortName = m_portName; + currentPortNameChanged = true; + } else { + currentPortNameChanged = false; + } + currentWaitTimeout = m_waitTimeout; + currentRequest = m_request; + m_mutex.unlock(); + } +//! [13] +} |