"Unsupported device" exception. ACR122 reader

[madfactory1]

Hi,

I have a problem! I try to communicate with a ACR122 Reader in p2p mode (with java-nfcip-1.3.1 API). When I run the JavaSE application, this exception is shown:

ds.nfcip.NFCIPException: unsupported device
at ds.nfcip.se.NFCIPConnection.connectToTerminal(Unknown Source)
at ds.nfcip.se.NFCIPConnection.setTerminal(Unknown Source)

But I can not solve it!. With ACR122U Tool, for example, the reader is detected without problems. But not with my Java application

Why not supported the reader??

I have installed SDK correctly and I modified regEdit variable correctly too. The terminal ID is 0.

Can it be a firmware compatibility problem? (My reader is ACR122U205). How to downgrade the firm (from 205 to 102 -> tested with nfcip API)?

(I will want to test my application with a Nokia 6131NFC and this reader)

I need help! Thanks so much!

[alejandrotanus]

I have the same issue. How coud you solve it?

Thanks!!

[theeuwke]

This is because it checks for a card:


NFCIPConnection.java:

try {
if (terminal.isCardPresent()) {
card = terminal.connect("*");
ch = card.getBasicChannel();
} else {
throw new NFCIPException("unsupported device");
}
} catch (CardException e) {
throw new NFCIPException("problem with connecting to reader");
}

you can start the program with a card on the reader. Then remove the card and move the readers on top to each other.

or you can change this into this:

try {
card = terminal.connect("*");
ch = card.getBasicChannel();
} catch (CardException e) {
throw new NFCIPException("problem with connecting to reader");
}