Mifare Plus. First Authenticate SL3 .Card doesn't answer on second step authenticate.

[fomin-ruslan32]

Hi, i've Mifare Plus SE 1K 7b. 

I am developing Nfc reader for home access systems. 

I've the STM32F207 and CLRC663. They communicate via I2C interface.

Our support team cannot respond until Oct 15. But my work can't stop.

According to example from ds163735 i did first step authentication. The card answered.

I formed new data and sent it to the card, but nothing happens. CLRC663 showed the data were transmitted and it is waiting response. Timeout matches protocol timings ISO/IEC 14443-4.

example ATS: 0c 75 77 80 02 c1 05 21 30 00 77 c1

my FSDI=5 -> 64 bytes

the card may not send an error if the data is incorrect in the second step?

[fernandomaesso]

Hi Ruslan,

I see in your post: "According to example from ds163735 i did first step authentication. The card answered.". I'm stucked in this first step.with exactly the same trouble you faced on second step. May you kindly provide me some advice?

Regards

Fernando

[fomin-ruslan32 · Accepted solution]

this issue was due to incorrect packet exchange protocol between pcd and picc