HydraFW v0.5 Beta released with support of HydraNFC/TRF7970A
http://hydrabus.com/2015/02/11/hydrafw-v0-5-beta-released/

Also a tutorial as been added to understand/learn how work TRF7970A NFC chipset

See https://github.com/bvernoux/hydrafw/wiki/HydraFW-HydraNFC-TRF7970A-Tutorial

The tutorial details how to:

• Initialize GPIO & SPI to communicate with TRF7970A/HydraNFC
• Initialize & read ISO15693/Vicinity Tag
• Initialize & read ISO14443A/Mifare Tag
• Use TRF7970A commands (SLOS743K – August 2011 – revised April 2014)