It seems broken

07 May 2017

This code reads a value even if there is no tag near the NFC01A1.

08 Aug 2017

Hello Rocco,
Please consider that X-NUCLEO-NFC01A1 board is providing itself a passive NFC tag that can be written/read either via RF (by e.g. a smartphone) or via I2C. It can not read another NFC tag.

Hope this helps, kindly let me know if I have misunderstood your point.