qt里QtSerialPort编程

曾忆少年时~峥嵘岁月稠2024-05-27 7:09

QT +=serialport

#include <QtSerialPort/QSerialPort>

#include <QtSerialPort/QSerialPortInfo>

QSerialPort * testport=new QSerialPort();

if(testport->isOpen()){

testport->clear();

testport->close();

}

testport->setPortName(portname);

testport->setBaudRate(boud.toInt()); //设置波特率

testport->setDataBits(QSerialPort::Data8); //8个数据位

testport->setParity(QSerialPort::NoParity); //无校验位

testport->setStopBits(QSerialPort::OneStop); //一个停止位

testport->setFlowControl(QSerialPort::NoFlowControl);

if(!testport->open(QIODevice::ReadWrite)){

qDebug()<<"串口打开失败";

war->warnxianshi("请更新串口！！！","串口打开失败！");

war->showNormal();

// QMessageBox::information(this,"串口打开失败","请更新串口！！！！");

  testport->setDataTerminalReady(true);
  connect(testport,SIGNAL(readyRead()),this,SLOT(recvdeal()));     //绑定串口读取数据槽

串口的读取槽：

void MainWindow:: recvdeal()

{

QString s=testport->readAll();

}

comboBox串口刷新：

ui->comboBox->clear();

foreach(const QSerialPortInfo & info,QSerialPortInfo::availablePorts()){

ui->comboBox->addItem(info.portName());

}

ui->comboBox->setCurrentIndex(-1);