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NFC reader communication stack

Question asked by Florian Schneider on Mar 23, 2016
Latest reply on Apr 26, 2016 by Jorge_Gonzalez

Hello everyone,


I'm currently working on a project for my Master thesis in computer science. I'm using a NXP PN532 V1.6 reader with a NTAG213 tag. The tag holds a UUID as content in text/plain format.

After studying your documentation I'm not quite sure how to establish a connect to my tag through the PN532 reader. First of all how can read out the content of the tag and which command steps are necessary to do so.


I'm new to the software stack of PN532. At the moment I'm able to read out its firmware version by sending the following command frame: \x00\x00\xFF\x02\xFE\xD4\x02\x2A\x00. After that I tried to read page 4 of the tag by sending the command: \x00\x00\xFF\x05\xFB\xD4\x40\x01\x30\x04\xB7\x00. Yet the command returns the following frame: d541 27c300 indicating that I'm having an error with error code 0x27. Your documentation says its related to an unknown target number.


What am I missing? What are the necessary steps to read out a tag when its within the antennas range?


Thanks in advance.