Russian Qt Forum

#include "barcodescanner.h"

BarcodeScaner::BarcodeScaner(QObject *parent) :
    QObject(parent)
{

QSerialPort * serial = new QSerialPort("/dev/ttyS0");

    if(!serial->setBaudRate(QSerialPort::Baud9600))
        qDebug() << serial->errorString();
    if(!serial->setDataBits(QSerialPort::Data8))
        qDebug() << serial->errorString();
    if(!serial->setParity(QSerialPort::NoParity))
        qDebug() << serial->errorString();
    if(!serial->setFlowControl(QSerialPort::HardwareControl))
        qDebug() << serial->errorString();
    if(!serial->setStopBits(QSerialPort::OneStop))
        qDebug() << serial->errorString();
    if(!serial->open(QIODevice::ReadOnly))
        qDebug() << serial->errorString();

connect(serial, &QSerialPort::readyRead,
            this, &BarcodeScaner::read_barecode_scan);
}

BarcodeScaner::~BarcodeScaner()
{
     delete serial;
}

void BarcodeScaner::read_barecode_scan()
{    
    QByteArray datas = serial->readAll();   
    QString datas_str = QString(datas).left(13);
    emit resultReady(datas_str);

}

cat /etc/os-release

[ 5584.697623] usb 4-2: USB disconnect, device number 11
[ 5590.121352] usb 4-2: new full-speed USB device number 12 using uhci_hcd
[ 5590.626397] usb 4-2: New USB device found, idVendor=1eab, idProduct=0d01
[ 5590.626403] usb 4-2: New USB device strings: Mfr=25, Product=42, SerialNumber=101
[ 5590.626407] usb 4-2: Product: USB DataPipe
[ 5590.626411] usb 4-2: Manufacturer: Auto-ID
[ 5590.626414] usb 4-2: SerialNumber: 11111111111111
[ 5592.137379] usb 4-2: USB disconnect, device number 12
[ 5592.961261] usb 4-2: new full-speed USB device number 13 using uhci_hcd
[ 5593.237313] usb 4-2: New USB device found, idVendor=1eab, idProduct=0d02
[ 5593.237319] usb 4-2: New USB device strings: Mfr=25, Product=42, SerialNumber=101
[ 5593.237322] usb 4-2: Product: USB DataPipe
[ 5593.237326] usb 4-2: Manufacturer: Auto-ID
[ 5593.237329] usb 4-2: SerialNumber: 11111111111111

NAME="Ubuntu"
VERSION="16.04.4 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.4 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial