QT5串口工程源代码（上位机）

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QMetaEnum> #include <QDebug> #include <QMessageBox> #include "iostream" using namespace std; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); //枚举所有有效的串口，并添加到combox foreach (const QSerialPortInfo &info ,QSerialPortInfo::availablePorts()) { ui->PortBox->addItem(info.portName()); } //枚举所有的波特率 QMetaEnum emBr = QMetaEnum::fromType<QSerialPort::BaudRate>(); for(int i = 0; i < emBr.keyCount(); i++) if(emBr.value(i)!=-1) ui->BaudBox->addItem(QString::asprintf("%d",emBr.value(i))); //枚举所有数据位 QMetaEnum emDB = QMetaEnum::fromType<QSerialPort::DataBits>(); for(int i = 0; i < emBr.keyCount(); i++) if(emDB.value(i)!=-1) ui->BitNumBox ->addItem(QString::asprintf("%d",emDB.value(i))); //枚举所有校验位 QMetaEnum emPr = QMetaEnum::fromType<QSerialPort::Parity>(); for(int i = 0; i < emPr.keyCount(); i++) if(emPr.value(i)!=-1) ui->ParityBox ->addItem(QString::asprintf("%d",emPr.value(i))); //枚举所有停止位 QMetaEnum emSTP = QMetaEnum::fromType<QSerialPort::StopBits>(); for(int i = 0; i < emSTP.keyCount(); i++) if(emSTP.value(i)!=-1) ui->StopBox->addItem(QString::asprintf("%d",emSTP.value(i))); //设置常用选项 ui->BaudBox->setCurrentIndex(3); ui->BitNumBox->setCurrentIndex(3); } MainWindow::~MainWindow() { delete ui; serial->close(); } void MainWindow::on_openButton_clicked() { qDebug()<< ui->openButton->text().at(6); if(ui->openButton->text().at(6)=='O') { ui->openButton->setText("关闭串口[&C]"); QMessageBox::information(this,"info","serial port open done!"); ui->statusBar->showMessage("串口已经打开！"); serial = new QSerialPort; //设置串口名 serial->setPortName(ui->PortBox->currentText()); //打开串口 serial->open(QIODevice::ReadWrite); //设置波特率 serial->setBaudRate(ui->BaudBox->currentText().toInt()); //设置数据位数 switch(ui->BitNumBox->currentIndex()) { case 8: serial->setDataBits(QSerialPort::Data8); break; default: break; } //设置奇偶校验 switch(ui->ParityBox->currentIndex()) { case 0: serial->setParity(QSerialPort::NoParity); break; default: break; } //设置停止位 switch(ui->StopBox->currentIndex()) { case 1: serial->setStopBits(QSerialPort::OneStop); break; case 2: serial->setStopBits(QSerialPort::TwoStop); break; default: break; } //链接串口serial的读取触发函数与Read_Data QObject::connect(serial, &QSerialPort::readyRead, this, &MainWindow::Read_Data); } else { ui->openButton->setText("打开串口[&O]"); QMessageBox::information(this,"info","serial port close done!"); ui->statusBar->showMessage("串口已经关闭！"); serial->close(); } } void MainWindow::on_sendButton_clicked() { if(serial->isOpen()) serial->write(ui->textEdit_2->toPlainText().toLatin1()); else QMessageBox::information(this,"infor","串口没有打开！"); cout<<"test done!"; } void MainWindow::on_clearButton_clicked() { ui->textEdit->clear(); } void MainWindow:: Read_Data() { QByteArray buf; buf = serial->readAll(); if(!buf.isEmpty()) { QString str = ui->textEdit->toPlainText(); str+=tr(buf); ui->textEdit->clear(); ui->textEdit->append(str); } buf.clear(); }