NFC MIRROR FAILED

[sunxin]

hello
Now I want to develop a project to use nt3h2111 NFC chip,
system general' working process is like this, there is a
card reader, and a controller in the system, card reader
and the controller transmission instruction through the
NFC ram, so will the ram address back to the mirror,
the reader can also read or write nfc ram, now the problem is
that when the card reader close to the NFC chip ,now controller
execution initialization for NFC, and sometimes I found that
the mirror will fail

                                                                              thanks

[IvanRuiz]

Hello,

Please make sure that you are enabling correctly the block to be mirrored. For instance, the data in SRAM cannot be mirrored to block 0 of the NTAG I2C EEPROM since it is the block which contains information of the Tag such as the UID which cannot be modified.

Please mirror it starting from block number one.

NTAG_SetSRAMMirrorOnOff(ntag_handle, true);
 HAL_Timer_delay_ms(5);
 NTAG_SetSRAMMirrorBlock(ntag_handle, 1);‍‍‍

This way it allows me to see the SRAM reflected in EEPROM.

I hope this helps!

Regards,

Ivan.

[sunxin]

oh！first ,thank you for replying my question very much.then,I have configurated the register SRAM_MIRROR_BLOCK as 0x30,it is not block 0 of the NTAG I2C EEPROM,and I have enabled the SRAM_MIRROR,but I found that the mirror will fail still.

thanks for you help!

[sunxin]

• 

[sunxin]

thanks!!!