Revision control
++ // Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com>
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #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]
++ }