ST25R100 SUPPORTS NFC TYPE

[SametKorur]

 

Hello, the NFC reader I use is ST25R100. My card is Mifare Desfire EV2. Does it support it?
My configs are like this, but it doesn't read the uid. It reads the NFCA type correctly.

 

[Brian TIDAL]

Hi,

as far as I know, this tag is ISO14443-3 compliant. Thus, the ST25R100 RFAL Firmware is able to retrieve its UID. Which firmware do you use? X-CUBE-NFC9?  Which hardware do you use?

Mifare Desfire EV2 has an optional high input capacitance (70 pF). Which capacitance do you use on your card?

Note also that you may need to format your tag as NDEF to be able to read/write from/to the tag memory once the UID has been retrieved. Can you share more information about your application? 

Rgds

BT

 

[SametKorur]

Hi BT,

Thanks for your reply.
Yes, I’m using the X-CUBE-NFC9 firmware. The hardware is a custom-designed PCB that we developed ourselves.

Could you please clarify what you mean by the “high input capacitance (70 pF) on your card”? Are you referring to the RFID tag (card) itself, or the reader side (our PCB antenna circuit)?

Best regards,
Samet

[Brian TIDAL]

Hi,

I am referring to the tag (see the MF3D(H)x2 datasheet).

Regarding the reader antenna, have you followed the AN6065 Antenna design for ST25R200 and ST25R100 devices App Note?

I suggest to test your tag with an X-NUCLEO-NFC09A1 board or with an STEVAL-25R200SA and check whether the tag UID is properly read. It will help to discriminate between the reader antenna and the tag.

Rgds

BT

 

[Ulysses HERNIOSUS]

Hi, 

please elaborate on "...it doesn't read the uid. It reads the NFCA type correctly." How do you come to this conclusion, what are the return codes of functions you are calling, etc.?

BR, Ulysses