hello all. i'm working with NT3H2211 tag + RC522 Reader.

[idocohen]

hello all.

i'm working with NT3H2211 Tag and RC522 as a reader.

i'm trying to communicate from PC (reader) to MCU (NT3H2211 - i2c bus).

the PC write command. -> MCU decode it and send answer.-> PC read the answer and so on.

1. PC write command - working good

2. MCU get the command and decode it - working good

3. MCU send answer - working good

4. from i2c perspective -> NC_REG=7Ch , NS_REG=29h - working good

5. from NFC perspective -> NC_REG=7Ch , NS_REG=00h <--- NOT working!!!!!!

i dont understand y NS_REG is always 0x00. when from i2c i read 0x29!!

please help.

[IvanRuiz]

Hello,

Please make sure that you are accessing the session registers correctly from NFC Perspective. The session registers are available from page 0xEC to 0xED. The NS_REG, is in Byte 2 of page 0xED. For more information, please refer to Table 12. of the data-sheet:

https://www.nxp.com/docs/en/data-sheet/NT3H2111_2211.pdf 

Regards,

Ivan.