Qt串口QSerialPortd的多线程（moveTo + 信号 + 槽）和非线程版 源码

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); // 初始化串口配置 ----- 主线程 serial_1 = new QSerialPort(); SerialPortConfigInit(); // -------------- end 主线程 // confSeriaPort = new configRWserialport(); // 串口配置界面 uiserialport = new uiSerialPort(); #if 1 // 线程 Begin ------------- confSeriaPort = new configRWserialport(); threadserialport = new QThread; confSeriaPort->moveToThread(threadserialport); // 回收 串口数据处理类 connect(threadserialport, &QThread::finished, confSeriaPort, &configRWserialport::deleteLater); // 回收 子线程变量 connect(threadserialport, &QThread::finished, threadserialport, &QThread::deleteLater); // 通知串口配置初始化 connect(threadserialport, &QThread::started, confSeriaPort, &configRWserialport::slot_serialporInit); // 启动线程 threadserialport->start(); // 点击打开串口 触发 线程 设置线程波特率、串口名... 打开串口 connect(uiserialport, &uiSerialPort::signal_setConfigSerialPort, confSeriaPort, &configRWserialport::slot_configSrialport); // 关闭串口 connect(uiserialport, &uiSerialPort::signal_closeOpen, confSeriaPort, &configRWserialport::slot_closeOpneSrialport); connect(confSeriaPort, &configRWserialport::signal_serialStatus, uiserialport, &uiSerialPort::slots_openOrNot); // ---------------- end 线程 #endif } Widget::~Widget() { delete ui; } void Widget::on_btn_openConsole_clicked() { if (ui->btn_openConsole->text() == tr("打开串口")) { //设置串口名字 serial_1->setPortName(ui->comboBox_serialPort->currentText()); //设置波特率 serial_1->setBaudRate(ui->comboBox_baudRate->currentText().toInt()); //设置数据位 serial_1->setDataBits(QSerialPort::Data8); //设置奇偶校验位 serial_1->setParity(QSerialPort::NoParity); //设置停止位 serial_1->setStopBits(QSerialPort::OneStop); //设置流控 serial_1->setFlowControl(QSerialPort::NoFlowControl); //打开串口 if (serial_1->open(QIODevice::ReadWrite)) { ui->comboBox_baudRate->setEnabled(false); ui->comboBox_dataBits->setEnabled(false); ui->comboBox_parity->setEnabled(false); ui->comboBox_serialPort->setEnabled(false); ui->comboBox_stopBit->setEnabled(false); ui->btn_openConsole->setText(tr("关闭串口")); //信号与槽函数关联 connect(serial_1, &QSerialPort::readyRead, this, &Widget::readData); } } else { //关闭串口 serial_1->close(); serial_1->deleteLater(); //恢复设置功能 ui->comboBox_baudRate->setEnabled(true); ui->comboBox_dataBits->setEnabled(true); ui->comboBox_parity->setEnabled(true); ui->comboBox_serialPort->setEnabled(true); ui->comboBox_stopBit->setEnabled(true); ui->btn_openConsole->setText(tr("打开串口")); } } static const char blankString[] = QT_TRANSLATE_NOOP("SettingsDialog", "N/A"); void Widget::SerialPortConfigInit() { //获取可以用的串口 QList<QSerialPortInfo> serialPortInfos = QSerialPortInfo::availablePorts(); QString description; QString manufacturer; QString serialNumber; //输出当前系统可以使用的串口个数 qDebug() << "Total numbers of ports: " << serialPortInfos.count(); //将所有可以使用的串口设备添加到ComboBox中 for (const QSerialPortInfo &serialPortInfo : serialPortInfos) { QStringList list; description = serialPortInfo.description(); manufacturer = serialPortInfo.manufacturer(); serialNumber = serialPortInfo.serialNumber(); list << serialPortInfo.portName() << (!description.isEmpty() ? description : blankString) << (!manufacturer.isEmpty() ? manufacturer : blankString) << (!serialNumber.isEmpty() ? serialNumber : blankString) << serialPortInfo.systemLocation() << (serialPortInfo.vendorIdentifier() ? QString::number(serialPortInfo.vendorIdentifier(), 16) : blankString) << (serialPortInfo.productIdentifier() ? QString::number(serialPortInfo.productIdentifier(), 16) : blankString); ui->comboBox_serialPort->addItem(list.first(), list); } ui->comboBox_serialPort->addItem(tr("custom")); //设置波特率 // ui->comboBox_baudRate->addItem(QStringLiteral("4800"), QSerialPort::Baud4800); ui->comboBox_baudRate->addItem(QStringLiteral("9600"), QSerialPort::Baud9600); ui->comboBox_baudRate->addItem(QStringLiteral("19200"), QSerialPort::Baud19200); ui->comboBox_baudRate->addItem(QStringLiteral("38400"), QSerialPort::Baud38400); ui->comboBox_baudRate->addItem(QStringLiteral("57600"), QSerialPort::Baud57600); ui->comboBox_baudRate->addItem(QStringLiteral("115200"), QSerialPort::Baud115200); ui->comboBox_baudRate->addItem(tr("Custom")); //设置数据位 ui->comboBox_dataBits->addItem(QStringLiteral("5"), QSerialPort::Data5); ui->comboBox_dataBits->addItem(QStringLiteral("6"), QSerialPort::Data6); ui->comboBox_dataBits->addItem(QStringLiteral("7"), QSerialPort::Data7); ui->comboBox_dataBits->addItem(QStringLiteral("8"), QSerialPort::Data8); ui->comboBox_dataBits->setCurrentIndex(3); //设置奇偶校验位 ui->comboBox_parity->addItem(tr("None"), QSerialPort::NoParity); ui->comboBox_parity->addItem(tr("Even"), QSerialPort::EvenParity); // 偶 ui->comboBox_parity->addItem(tr("Odd"), QSerialPort::OddParity); // 奇 ui->comboBox_parity->addItem(tr("Mark"), QSerialPort::MarkParity); ui->comboBox_parity->addItem(tr("Space"), QSerialPort::SpaceParity); //设置停止位 ui->comboBox_stopBit->addItem(QStringLiteral("1"), QSerialPort::OneStop); ui->comboBox_stopBit->addItem(QStringLiteral("2"), QSerialPort::TwoStop); #if 0 //添加流控 ui->comboBox_flowBit->addItem(tr("None"), QSerialPort::NoFlowControl); ui->comboBox_flowBit->addItem(tr("RTS/CTS"), QSerialPort::HardwareControl); ui->comboBox_flowBit->addItem(tr("XON/XOFF"), QSerialPort::SoftwareControl); #endif } void Widget::readData() { QByteArray buf = serial_1->readAll(); if (!buf.isEmpty()) { char* rawBuf=buf.data(); qDebug() << rawBuf; // qDebug()<<"read current value "<< *(uint16_t*)(rawBuf + 3); } return ; } void Widget::on_btnSend_clicked() { QByteArray msg; msg = ui->Editmsg->toPlainText().toUtf8(); if(msg.isEmpty()) return ; int ret=serial_1->write(msg); } void Widget::on_conserialport_clicked() { uiserialport->show(); }