Resolving UID on I2C tag plus with PN512

sjedrasik — Mon, 17 Sep 2018 07:52:50 GMT

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

Re: Resolving UID on I2C tag plus with PN512

sjedrasik — Tue, 18 Sep 2018 05:55:20 GMT

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

BR
Seba :smileyhappy: