QT SerialPort.zip

#include "mainwindow.h" #include "ui_mainwindow.h" static const char blankString[] = QT_TRANSLATE_NOOP("SettingsDialog", "N/A"); MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); serial = new QSerialPort; QString description; QString manufacturer; QString serialNumber; //获取可以用的串口 QList<QSerialPortInfo> serialPortInfos = QSerialPortInfo::availablePorts(); //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("9600"), QSerialPort::Baud9600); ui->comboBox_baudRate->addItem(QStringLiteral("19200"), QSerialPort::Baud19200); ui->comboBox_baudRate->addItem(QStringLiteral("38400"), QSerialPort::Baud38400); 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); ui->comboBox_parity->addItem(tr("Odd"), QSerialPort::OddParity); 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); //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); //禁用发送按钮 ui->btn_send->setEnabled(false); } MainWindow::~MainWindow() { //delete serial; delete ui; } //打开串口按钮槽函数 void MainWindow::on_btn_openConsole_clicked() { qDebug() << ui->btn_openConsole->text(); if (ui->btn_openConsole->text() == tr("打开串口")) { //设置串口名字 serial->setPortName(ui->comboBox_serialPort->currentText()); //设置波特率 serial->setBaudRate(ui->comboBox_baudRate->currentText().toInt()); //设置数据位 serial->setDataBits(QSerialPort::Data8); //设置奇偶校验位 serial->setParity(QSerialPort::NoParity); //设置停止位 serial->setStopBits(QSerialPort::OneStop); //设置流控 serial->setFlowControl(QSerialPort::NoFlowControl); //打开串口 if (serial->open(QIODevice::ReadWrite)) { ui->comboBox_baudRate->setEnabled(false); ui->comboBox_dataBits->setEnabled(false); ui->comboBox_flowBit->setEnabled(false); ui->comboBox_parity->setEnabled(false); ui->comboBox_serialPort->setEnabled(false); ui->comboBox_stopBit->setEnabled(false); ui->btn_send->setEnabled(true); ui->btn_openConsole->setText(tr("关闭串口")); //信号与槽函数关联 connect(serial, &QSerialPort::readyRead, this, &MainWindow::readData); } } else { //关闭串口 //serial->clear(); serial->close(); //serial->deleteLater(); //恢复设置功能 ui->comboBox_baudRate->setEnabled(true); ui->comboBox_dataBits->setEnabled(true); ui->comboBox_flowBit->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")); ui->btn_send->setEnabled(false); } } //发送数据槽函数 void MainWindow::on_btn_send_clicked() { serial->write(ui->textEdit_send->toPlainText().toLatin1()); } //清空接收数据槽函数 void MainWindow::on_btn_clearRecv_clicked() { ui->textEdit_recv->clear(); } //清空发送区槽函数 void MainWindow::on_btn_clearSend_clicked() { ui->textEdit_send->clear(); } void MainWindow::readData() { QByteArray buf; qDebug() << "readData: " << endl; buf = serial->readAll(); if (!buf.isEmpty()) { QString str = ui->textEdit_recv->toPlainText(); str += tr(buf); ui->textEdit_recv->clear(); ui->textEdit_recv->append(str); } }