AnsweredAssumed Answered

CR95HF and DESFire

Question asked by Thanh Phan on Apr 21, 2014
Latest reply on Apr 21, 2014 by Thanh Phan
Hi Everyone,

I'm using the CR95HF to access the DESFire card. Everything was going fine up to RATS and PPS.

However when I tried to send the GetVersion Desfire command (0x60) using the Half-duplex block transmission protocol with PCB, CID, INF...  as below:

0x04, 0x04, 0x0A, 0x00, 0x60, 0x28
header, len, PCB, CID,   INF,    control byte

I only received 0x87 0x00. The same happened with Authenticate (0x0A 0x00) command. So I think I it must be something wrong with the EDC (CRC) code.

Could anybody shed some light on this?

Edited: According to the datasheet, the CR95HF only supports 14443-3 not 14443-4, is that correct?