How can I get the NFC contactless reader ACR122U to behave as a tag (card emulation mode)? The prospectus claims that the device can do card emulation, but the SDK does not seem to provide an example or documentation for this feature.
Does anybody know how to do this? Is there additional software required? Please note that my target platform is MS Windows.
Thanks in advance
Answer
For "Card Emulation" or in other words, "Configure as target and wait for initiators", please refer to here: http://code.google.com/p/nfcip-java/source/browse/trunk/nfcip-java/doc/ACR122_PN53x.txt
** Command to PN532 ** 0xd4 0x8c TgInitAsTarget instruction code 0x00 Acceptable modes (0x00 = allow all, 0x01 = only allow to be initialized as passive, 0x02 = allow DEP only) _6 bytes (_MIFARE_)_: 0x08 0x00 SENS_RES 0x12 0x34 0x56 NFCID1 0x40 SEL_RES _18 bytes (_Felica_)_: 0x01 0xfe 0xa2 0xa3 0xa4 0xa5 0xa6 0xa7 NFCID2 0xc0 0xc1 0xc2 0xc3 0xc4 0xc5 0xc6 0xc7 ? 0xff 0xff System parameters? 0xaa 0x99 0x88 0x77 0x66 0x55 0x44 0x33 0x22 0x11 NFCID3 0x00 ? 0x00 ?
This is the response when an initiator activated this target:
** Response from PN532 ** 0xd5 0x8d TgInitAsTarget response code 0x04 Mode (0x04 = DEP, 106kbps)
Let me know if it works!