PN532 - Collision register

[shaharc1994]

Hi, 

We are working on PN532 chip with RPI3, using your data-sheet - https://www.nxp.com/docs/en/nxp/data-sheets/PN532_C1.pdf  & user manual - https://www.nxp.com/docs/en/user-guide/141520.pdf 

when I'm trying to read the CIU_Coll register (EFh or 633Eh) while there are two tags on the reader I'm getting 00, I'm using PN532_COMMAND_INLISTPASSIVETARGET with one maximum reading card

how I can detect collision with the register?

Thanks!

[Fabian_R]

Hello, my name is Fabian, I've been assigned to support your case.

I appreciate your interest in our products.

Could you please share with us a snippet of the implementation you are attempting? We encourage you to please explore the possibility of using our SDK to be able to provide a better recommendation.