QT源码-串口助手123456

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); this->setWindowTitle("小源串口调试助手"); this->setWindowIcon(QIcon(":/123.jpg")); serialPort=new QSerialPort(this); //扫描本机的串口，并添加到下拉框 foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts()){ initPortStringList.append(info.portName()); } ui->comboBox->addItems(initPortStringList); //定时更新串口 timer=new QTimer(this); connect(timer,&QTimer::timeout,this,&Widget::UpdatePort); timer->start(1000); //读取数据 connect(serialPort,SIGNAL(readyRead()),this,SLOT(readData())); } Widget::~Widget() { delete ui; } void Widget::on_pushButton_clicked(bool checked) { if(checked==true){ //设置要打开的串口的名字 serialPort->setPortName(ui->comboBox->currentText()); //设置波特率 serialPort->setBaudRate(ui->comboBox_2->currentText().toInt()); //设置停止位 serialPort->setStopBits(QSerialPort::StopBits( ui->comboBox_3->currentText().toInt())); //设置数据位 serialPort->setDataBits(QSerialPort::DataBits(ui->comboBox_4->currentText().toInt())); //设置校验位 switch (ui->comboBox_5->currentIndex()) { case 0: serialPort->setParity(QSerialPort::NoParity); break; case 1: serialPort->setParity(QSerialPort::EvenParity); break; case 2: serialPort->setParity(QSerialPort::OddParity); break; case 3: serialPort->setParity(QSerialPort::SpaceParity); break; case 4: serialPort->setParity(QSerialPort::MarkParity); break; default: break; } //设置流控 serialPort->setFlowControl(QSerialPort::NoFlowControl); if(!serialPort->open(QIODevice::ReadWrite)){ QMessageBox::about(this,"错误","串口打开失败可能被占用！"); return; } ui->comboBox->setEnabled(false); ui->comboBox_2->setEnabled(false); ui->comboBox_3->setEnabled(false); ui->comboBox_4->setEnabled(false); ui->comboBox_5->setEnabled(false); ui->pushButton->setText("关闭串口"); } else{ //关闭串口 serialPort->close(); ui->comboBox->setEnabled(true); ui->comboBox_2->setEnabled(true); ui->comboBox_3->setEnabled(true); ui->comboBox_4->setEnabled(true); ui->comboBox_5->setEnabled(true); ui->pushButton->setText("打开串口"); } } void Widget::readData() { //接收数据 ui->textBrowser->insertPlainText( QString::fromUtf8( serialPort->readAll())); } void Widget::on_pushButton_2_clicked() { //发送数据 serialPort->write(ui->textEdit->toPlainText().toUtf8()); ui->textEdit->clear(); } void Widget::on_pushButton_3_clicked() { //清除数据 ui->textEdit->clear(); } //更新串口 void Widget::UpdatePort() { QStringList newportList; foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts()){ newportList<<info.portName(); } if(newportList.size()>initPortStringList.size()) { initPortStringList=newportList; ui->comboBox->clear(); ui->comboBox->addItems(initPortStringList); qDebug()<<"更新串口"; }else if(newportList.size()<initPortStringList.size()){ initPortStringList=newportList; ui->comboBox->clear(); ui->comboBox->addItems(initPortStringList); qDebug()<<"更新串口2"; on_pushButton_clicked(false); } } //清除接收窗口 void Widget::on_pushButton_4_clicked() { ui->textBrowser->clear(); } //自动滚动 void Widget::on_textBrowser_textChanged() { ui->textBrowser->moveCursor(QTextCursor::End); }