https://community.nxp.com/t5/NFC/NTAG-424-DNA-Interrupted-Read-Data/m-p/1799842#M11235 <P>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.</P> Thu, 01 Feb 2024 11:16:35 GMT lukas_l 2024-02-01T11:16:35Z https://community.nxp.com/t5/NFC/NTAG-424-DNA-Interrupted-Read-Data/m-p/1796856#M11224 <P>Hi,<BR />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.<BR />Card: NXP NTAG424 DNA<BR />Reader: NXP CLRC663+<BR />Status of Card: initialised and authenticated with Key0<BR />Sample: trying to Read full length of File 2<BR />PCD to PICC: 90 AD 00 00 07 02 00 00 00 00 00 00 00<BR />PICC to PCD: 00 00 00 ………. 00 122 bytes overall no Status bytes (expected 256 Bytes Data + 2 Bytes Status)<BR />Really would appreciate any inside.</P> Mon, 29 Jan 2024 12:52:22 GMT https://community.nxp.com/t5/NFC/NTAG-424-DNA-Interrupted-Read-Data/m-p/1796856#M11224 lukas_l 2024-01-29T12:52:22Z https://community.nxp.com/t5/NFC/NTAG-424-DNA-Interrupted-Read-Data/m-p/1799842#M11235 <P>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.</P> Thu, 01 Feb 2024 11:16:35 GMT https://community.nxp.com/t5/NFC/NTAG-424-DNA-Interrupted-Read-Data/m-p/1799842#M11235 lukas_l 2024-02-01T11:16:35Z