QT5编写串口调试助手项目源码（适合初学者）

#include "mainwindow.h" void MainWindow::combuttonack() { qDebug() << ui->combutton->text(); if(ui->combutton->text() == ("打开串口")) { ui->combutton->setText("关闭串口"); //设置串口号 my_serialport->setPortName(ui->cmbPortName->currentText()); //以读写方式打开串口 if(my_serialport->open(QIODevice::ReadWrite)) { //设置波特率 my_serialport->setBaudRate(ui->cmbBaudRate->currentText().toInt()); //设置数据位 switch(ui->cmbDataBits->currentText().toInt()) { case 5: my_serialport->setDataBits(QSerialPort::Data5); break; case 6: my_serialport->setDataBits(QSerialPort::Data6); break; case 7: my_serialport->setDataBits(QSerialPort::Data7); break; case 8: my_serialport->setDataBits(QSerialPort::Data8); break; default: my_serialport->setDataBits(QSerialPort::Data8); break; } //设置校验位 if(ui->cmbParity->currentText() == ("无")) { my_serialport->setParity(QSerialPort::NoParity); } else if(ui->cmbParity->currentText() == ("奇")) { my_serialport->setParity(QSerialPort::EvenParity); } else if(ui->cmbParity->currentText() == ("偶")) { my_serialport->setParity(QSerialPort::OddParity); } else if(ui->cmbParity->currentText() == ("标志")) { my_serialport->setParity(QSerialPort::MarkParity); } else { my_serialport->setParity(QSerialPort::SpaceParity); } //设置停止位 if(ui->cmbStopBits->currentText() == ("1")) { my_serialport->setStopBits(QSerialPort::OneStop); } else if(ui->cmbStopBits->currentText() == ("1.5")) { my_serialport->setStopBits(QSerialPort::OneAndHalfStop); } else { my_serialport->setStopBits(QSerialPort::TwoStop); } //设置流控制 if(ui->cmbfluidcontrol->currentText() == ("none")) { my_serialport->setFlowControl(QSerialPort::NoFlowControl); } else if(ui->cmbfluidcontrol->currentText() == ("hardware")) { my_serialport->setFlowControl(QSerialPort::HardwareControl); } else { my_serialport->setFlowControl(QSerialPort::SoftwareControl); } //每秒读一次 connect(timer, SIGNAL(timeout()), this, SLOT(readComDataSlot())); timer->start(1000); } } else { ui->combutton->setText("打开串口"); timer->stop(); my_serialport->close(); } } void MainWindow::sendbuttonack() { //获取发送区的数据 QString sendData = ui->tetransdata->toPlainText(); QByteArray sendData_2 = sendData.toLatin1(); //写入缓冲区 my_serialport->write(sendData_2); } void MainWindow::readComDataSlot() { //读取串口数据 QByteArray readComData = my_serialport->readAll(); //将读到的数据显示到数据接收区的te中 if(readComData != NULL) { ui->terecvdata->append(readComData); } //清除缓冲区 readComData.clear(); } MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) { qDebug()<<"Name:"<<info.portName(); qDebug()<<"Description:"<<info.description(); qDebug()<<"Manufacturer:"<<info.manufacturer(); //这里相当于自动识别串口号之后添加到了cmb，如果要手动选择可以用下面列表的方式添加进去 QSerialPort serial; serial.setPort(info); if(serial.open(QIODevice::ReadWrite)) { //将串口号添加到cmb ui->cmbPortName->addItem(info.portName()); //关闭串口等待人为(打开串口按钮)打开 serial.close(); } } QStringList baudList;//波特率 QStringList parityList;//校验位 QStringList dataBitsList;//数据位 QStringList stopBitsList;//停止位 QStringList fluidcontrolList;//流控 baudList<<"50"<<"75"<<"100"<<"134"<<"150"<<"200"<<"300" <<"600"<<"1200"<<"1800"<<"2400"<<"4800"<<"9600" <<"14400"<<"19200"<<"38400"<<"56000"<<"57600" <<"76800"<<"115200"<<"128000"<<"256000"; ui->cmbBaudRate->addItems(baudList); ui->cmbBaudRate->setCurrentIndex(12); parityList<<"无"<<"奇"<<"偶"; parityList<<"标志"; parityList<<"空格"; ui->cmbParity->addItems(parityList); ui->cmbParity->setCurrentIndex(0); dataBitsList<<"5"<<"6"<<"7"<<"8"; ui->cmbDataBits->addItems(dataBitsList); ui->cmbDataBits->setCurrentIndex(3); stopBitsList<<"1"; stopBitsList<<"1.5"; stopBitsList<<"2"; ui->cmbStopBits->addItems(stopBitsList); ui->cmbStopBits->setCurrentIndex(0); fluidcontrolList << "none" << "hardware" << "software"; ui->cmbfluidcontrol->addItems(fluidcontrolList); ui->cmbfluidcontrol->setCurrentIndex(0); connect(ui->combutton,SIGNAL(clicked()),this,SLOT(combuttonack())); connect(ui->sendbutton,SIGNAL(clicked()),this,SLOT(sendbuttonack())); } MainWindow::~MainWindow() { delete ui; }