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androidnfc

How to read NFC type A card pages?

I have an Android app that is reading Mifare Ultralight card content. Previously all cards had Ultralight in android.nfc.tech and I was using readPages() to get the data with no problems.

Now I encountered new types of card that do not have Ultralight in android.nfc.tech and I can't use readPages() anymore. However I encounter that TagInfo app by NXP does read pages. How can I achieve same result? Should I use tranceive() command? What command should I generate?

Solution

  • You could have a look at MifareUltralight source and try to reproduce code for your tag:

    public byte[] readPages(int pageOffset) throws IOException {
    validatePageIndex(pageOffset);
    checkConnected();
    byte[] cmd = { 0x30, (byte) pageOffset};
    return transceive(cmd, false);
}