Issues with QtNFC

Mark81

I'm reading through the documentation of QtNFC.. I successfully compiled the NDEF Editor, but nothing happens. I mean, the GUI runs, I can load/save NDEF records to HDD, but read/write to cards doesn't work. If I click read a blue square appears, while if I click write a yellow square appears. But no data is actually read/write from/to the card.

Even if I don't put the card on the reader the behavior is the same. I added some qDebug() output in the targetDetected and targetLost slots but none fired.

I'm using a PN533 (ACR122) under Ubuntu 20.04. The card is a common ISO14443A.
It works find using libnfc and the related examples.

I tried to:

qDebug() << m_manager->isEnabled() << m_manager->isSupported();

and both return false.
Is there something I need to check in my system?

SGaist

Hi,

You should add some more information:

Qt version
OS
Device specification

Mark81

@SGaist

Qt 6.2.0
Ubuntu 20.04 Desktop
KKMoon ACR122

SGaist

Do you have the same issue with Qt 5.15 ?

Mark81

@SGaist Sorry but I can't run Qt 5.x for this project, I need to stay with Qt 6.2

mchinand

It may not be a final solution, but checking to see if it works for you when using Qt5.15 may help pinpoint why it's not working for you with Qt6.

Mark81

@mchinand Well, I installed Qt 5.15 and launched the official demo. The output is:

qt.nfc.neard: dbus object manager invalid
qt.nfc.neard: Error getting managed objects
qt.nfc.neard: dbus object manager invalid or adapter path invalid

I'm pretty sure there is no neard on the system because it seems it's not available in Ubuntu 20.04: