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Resolving UID on I2C tag plus with PN512

Question asked by Sebastian Jedrasik on Sep 17, 2018
Latest reply on Sep 17, 2018 by Sebastian Jedrasik

Hi

I'm using PN512 to communicate with Ntag_i2c and have some difficulties with resolving full 7 bytes of UID.

I send Reqquest and get Response

 

Req 0 = 0x26 - Request 


Req 1 = 0x93 0x20 - Antycillision CL1

Res 1 = 0x88 0x04 0x73 0x57 0xA8 ,status = 0 - Received 3 bytes of UID


Req 2 = 0x93 0x70 0x88 0x04 0x73 0x57 0xFF 0x3E 0x85 , status = FFFFFFFE - Select CL1

Here is something wrong I'm not sure what

 

Req 3 = 0x95 0x20 - Anticollision CL2

Res 3 = 0x95 0x20 0x88 0x04 0x73 0x57 0xFF 0x3E ,status = 0x1C - Select CL2

Can anyone tell me what do I dpo wrong ?

 

Regards

Seba

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