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ATR 210 ultralight tag id #128

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ATR 210 ultralight tag id #128

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c5413a5
ATR 210 ultralight tag id
skjolber Jul 17, 2026
e19c654
Merge branch 'master' into atr210UltralightTagId
skjolber Jul 17, 2026
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21 changes: 21 additions & 0 deletions ...rnal-mqtt-hid/src/main/java/no/entur/android/nfc/external/hid/card/Atr210CardService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,8 @@
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

import no.entur.android.nfc.external.mqtt3.client.MqttServiceClient;
import no.entur.android.nfc.external.ExternalNfcReaderCallback;
import no.entur.android.nfc.external.ExternalNfcTagCallback;
Expand Down Expand Up @@ -113,6 +115,25 @@ public void createTag() {
} else if(tagType == TagType.MIFARE_ULTRALIGHT) {
Atr210IsoDepWrapper wrapper = new Atr210IsoDepWrapper(commands, logApdus);

if(cardContext.getUid() == null) {
// read the card uid manually
try {
byte[] transceive = commands.transceive(new byte[]{(byte) 0x30, 0x00}); // Read 4 pages from page offset 0
if(transceive != null && transceive.length == 16) {
byte[] uid = new byte[7];
System.arraycopy(transceive, 0, uid, 0, 3);
System.arraycopy(transceive, 0, uid, 3, 4);
cardContext.setUid(uid);
}
} catch (Exception e) {
LOGGER.info("Problem reading ultralight tag id", e);

isoDepTagServiceSupport.broadcast(ExternalNfcTagCallback.ACTION_TECH_DISCOVERED);

return;
}
}

this.currentCard = ultralightTagServiceSupport.mifareUltralight(0, wrapper, cardContext.getAtr(), cardContext.getUid(), cardContext.getHistoricalBytes(), (intent) -> {

intent.putExtra(Atr210NfcTagCallback.EXTRA_PROVIDER_ID, cardContext.getProviderId());
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