qt串口通信

qt 串口通信 部分代码如下： myCom = new Win_QextSerialPort(QString("COM3"),QextSerialBase::EventDriven); if(!myCom ->open(QIODevice::ReadWrite)) return; ui->pushButton->setEnabled(false); myCom->setBaudRate(BAUD9600); myCom->setDataBits(DATA_8); myCom->setParity(PAR_NONE); myCom->setStopBits(STOP_1); myCom->setTimeout(500); connect(myCom,SIGNAL(readyRead()),this,SLOT(readCom()));