In this mode, data can only be read from the serial port, not written SerialPort.open(QIODevice::ReadOnly) //Open the serial port and set the serial port to read-only mode

Open the serial port and set the open mode tFlowControl(QSerialPort::NoFlowControl) //Set flow control (none) tStopBits(QSerialPort::OneStop) //Set stop bit (one bit) tParity(QSerialPort::NoParity) //Set parity check (none) tDataBits(QSerialPort::Data8) //Set data bit (8) Set baud rate tBaudRate(QSerialPort::Baud115200) //Set serial port baud rate (9600) Qdebug() < < 'serial port information not found, please check whether the device is connected' QDebug() << 'System Location: ' << SerialPortInfo.systemLocation() // System location QDebug() << 'Serial Number: ' << rialNumber() // Serial port number QDebug() << 'Manufacturer: ' << SerialPortInfo.manufacturer() QDebug() << 'Description : ' << scription() // Serial port description QDebug() << 'Name : ' << SerialPortInfo.portName() // Serial port name, such as com3 The specific information is as follows:'

Qdebug() < < 'the required serial port has been found. If(info.portName() 'COM10') //Use the if statement to determine whether the serial port is required Here, select the serial port named COM10 and output the specific information of the serial portįoreach (const qserialportinfo & info, qserialportinfo:: availableports()) / / search for serial ports and obtain the list of serial ports QDebug()< qt serial port read

The serial port in Qt uses QSerialPort and QSerialPortInfo, and the use of these two classes must add the serialport module, that is, the serial port module, to the project file.

Qt serial port read