Resolving UID on I2C tag plus with PN512

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Resolving UID on I2C tag plus with PN512

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sjedrasik
Contributor II

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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sjedrasik
Contributor II

I fixed it. I had small error in my sending routine.

BR
Seba :smileyhappy:

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