I am firmware developer.
I used a PN512 + NRF51822 u-com.
connected uart tx,rx.
I need to example source code about uart of pn512.
For your information: PN512 reader board | NXP
There is software example:
NFC Reader Library v4.040.05.011646 R1 for PNEV512B including all software examples. (REV 3.9 )