How to record information using the MFRC522 in arduino?

0

I'm using an MRFC522 module to use arduino with NFC, so I can read the UID of the tag normally. But when I try to write something in the memory blocks it appears: PCD Authentication () failed: Timeout in communication. Theoretically the cards come in MIFARE mode, but I've already tried to reformat to NDEF mode and continued to exhibit the same error. I've also tried using the original link library and swapping byte for MFRC522 :: StatusCode. It is not an authentication error because I ran the rfid_default_keys code and found the key, being one of the standards used by the libraries. So I would like to know how I could write to the card?

    
asked by anonymous 31.08.2018 / 23:17

0 answers