The MSP430G2553 initializes the TRF7970A in reader mode. While in reader mode, it tries to read ISO14443A, ISO14443B, and ISO15693 Tags. After 5 seconds elapse, the TRF7970A is reconfigured to emulate an ISO14443B card. The Nexus S is used to read the ISO14443B card, as well as to emulate an ISO14443A card.
