NTAG 424 DNA Interrupted Read Data

[lukas_l]

Hi,
I am trying to read the NDEF data file of my factory fresh card. When using the command ReadData with a specified length below 0x7A everything is fine. But with longer length or zero for full file I only get back 122 bytes also missing status bytes.
Card: NXP NTAG424 DNA
Reader: NXP CLRC663+
Status of Card: initialised and authenticated with Key0
Sample: trying to Read full length of File 2
PCD to PICC: 90 AD 00 00 07 02 00 00 00 00 00 00 00
PICC to PCD: 00 00 00 ………. 00 122 bytes overall no Status bytes (expected 256 Bytes Data + 2 Bytes Status)
Really would appreciate any inside.

[lukas_l · Accepted solution]

I found the error. The card only supports frame size 128 bytes in the data link layer and my implementation of the link layer disregarded that.