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Diffstat (limited to 'examples/serialport/blockingmaster/masterthread.cpp')
| -rw-r--r-- | examples/serialport/blockingmaster/masterthread.cpp | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/examples/serialport/blockingmaster/masterthread.cpp b/examples/serialport/blockingmaster/masterthread.cpp new file mode 100644 index 00000000..061ddd6e --- /dev/null +++ b/examples/serialport/blockingmaster/masterthread.cpp @@ -0,0 +1,182 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com> +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtSerialPort module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "masterthread.h" + +#include <QtSerialPort/QSerialPort> + +#include <QTime> + +QT_USE_NAMESPACE + +MasterThread::MasterThread(QObject *parent) + : QThread(parent), waitTimeout(0), quit(false) +{ +} + +//! [0] +MasterThread::~MasterThread() +{ + mutex.lock(); + quit = true; + cond.wakeOne(); + mutex.unlock(); + wait(); +} +//! [0] + +//! [1] //! [2] +void MasterThread::transaction(const QString &portName, int waitTimeout, const QString &request) +{ + //! [1] + QMutexLocker locker(&mutex); + this->portName = portName; + this->waitTimeout = waitTimeout; + this->request = request; + //! [3] + if (!isRunning()) + start(); + else + cond.wakeOne(); +} +//! [2] //! [3] + +//! [4] +void MasterThread::run() +{ + bool currentPortNameChanged = false; + + mutex.lock(); + //! [4] //! [5] + QString currentPortName; + if (currentPortName != portName) { + currentPortName = portName; + currentPortNameChanged = true; + } + + int currentWaitTimeout = waitTimeout; + QString currentRequest = request; + mutex.unlock(); + //! [5] //! [6] + QSerialPort serial; + + while (!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(portName).arg(serial.error())); + return; + } + + if (!serial.setBaudRate(QSerialPort::Baud9600)) { + emit error(tr("Can't set baud rate 9600 baud to port %1, error code %2") + .arg(portName).arg(serial.error())); + return; + } + + if (!serial.setDataBits(QSerialPort::Data8)) { + emit error(tr("Can't set 8 data bits to port %1, error code %2") + .arg(portName).arg(serial.error())); + return; + } + + if (!serial.setParity(QSerialPort::NoParity)) { + emit error(tr("Can't set no patity to port %1, error code %2") + .arg(portName).arg(serial.error())); + return; + } + + if (!serial.setStopBits(QSerialPort::OneStop)) { + emit error(tr("Can't set 1 stop bit to port %1, error code %2") + .arg(portName).arg(serial.error())); + return; + } + + if (!serial.setFlowControl(QSerialPort::NoFlowControl)) { + emit error(tr("Can't set no flow control to port %1, error code %2") + .arg(portName).arg(serial.error())); + return; + } + } + //! [7] //! [8] + // write request + QByteArray requestData = currentRequest.toLocal8Bit(); + serial.write(requestData); + if (serial.waitForBytesWritten(waitTimeout)) { + //! [8] //! [10] + // read response + if (serial.waitForReadyRead(currentWaitTimeout)) { + QByteArray responseData = serial.readAll(); + while (serial.waitForReadyRead(10)) + responseData += serial.readAll(); + + QString response(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] + mutex.lock(); + cond.wait(&mutex); + if (currentPortName != portName) { + currentPortName = portName; + currentPortNameChanged = true; + } else { + currentPortNameChanged = false; + } + currentWaitTimeout = waitTimeout; + currentRequest = request; + mutex.unlock(); + } + //! [13] +} |