Problem with NTAG protected in NFC side

[NSF]

Hello,

I am using the NXP tag NTP5332 and actually I has problems with commands that are sent via NFC using customized mobile app. On the NFC side, I am having problems writing to a password-protected memory region. To read a memory region protected against reading, I follow the sequence of commands described above, changing only the Password Identifier to 0x01 and the operation to read; in this case, the read operation is successful. If the password protection against reading and writing is removed, the read and write commands work without any problems.

Can anyone help me with these issues? Am I sending the wrong command?
Thanks for your help!

[EduardoZamora]

Hello @NSF

Hope you are doing well.

Could you please confirm that is the memory region you are trying to write to (User memory or Configuration memory)?

What is the configuration of your Protection Pointer and related conditions?

Is there any chance you have perform a Lock operation to the region you are trying to write? What is the value of your NFC Lock Block Configuration blocks?

Please consider that we recommend using TapLinx SDK. This SDK provides some tools for contactless applications development in smartphones. The open API allows developers open access to all hardware features of NXP‘s NFC product portfolio. It provides a subset of features for quick and easy development of lightweight applications.

Regards,
Eduardo.