QT CAN BUS, SocketCAN cannot read CAN frames

Question

I have troubles reading CAN frames using readFrame() method in QT.

My code for initialization:

#include <QCanBusFrame>
#include <QCanBus>
#include <QCanBusDevice>

CANSend::CANSend(QString interface){

CANdevice = QCanBus::instance()->createDevice("socketcan", interface);
if (!CANdevice->connectDevice()) {}

 }

code for sending data - everything works correctly

void CANSend::send_pos(uint16_t pos)
{
QCanBusFrame frame;
frame.setFrameId(1024);
QByteArray payload;
payload[0]=0;
payload[1]=pos>>8;
payload[2]=pos;

frame.setPayload(payload);
CANdevice->writeFrame(frame);
}

code for reading data

int CANSend::check_messages(){

 const QCanBusFrame frame = CANdevice->readFrame();

 const qint8 dataLength = frame.payload().size();

 const qint32 id = frame.frameId();

 return id;
}

during debugging I always get frame = @0x7fffffffdf10, dataLength = 0, id = 0,

So, even though I can clearly see incomming packets via candump command and also in QT CANBUS example, I never receive anything.

Can you help me, please? Thanks.