How to restore SMARTAG1

[BRalc.1]

I was investigating NFC functionality on STEVAL-SMARTAG1 board, and something went wrong. Most likely I mistyped a symbol while writing one of the registers using NFC Tap iOS app. The tag is no longer recognizable by the app, see the screenshot attached. I could not find any firmware to restore the tag. Is there a way to restore it?

[Brian TIDAL]

Hi,

the firmware package for the STEVAL_SMARTAG1 is FP-SNS-SMARTAG1. It includes sources and binaries. Make sure to read UM2389 (Getting started with the STM32Cube function pack for IoT node with Dynamic NFC Tag, environmental and motion sensors).

Rgds

BT

[victor laraison]

Hi ,

I'm in charge of developing the iOS NFC tap application.

Regarding your issue :

• Please, could you detail more what did you write in register ?
• I suspect that your CCFile is wrong. Please, could you tell me the magic number value when you display Tag information ? Normally it should be "E2"
• Otherwise, what are the values returned by getSystemInfo ? Go in Menu "More" => "CoreNFC" => GetSystemInfo

Thx and br,

[BRalc.1]

Hi Victor,

Thanks for the message.

NFCTap - I tried to enable FTM, no success. STException Command Failed. Before that I spent considerable amount of time trying to do the same thing from my own app. I was able to read MB_Mode but could not write into it to enable FTM.

Your assumption about CCFile is correct. I tried to get any write command passing, CCFile was the first in the list. I guess it was not the best move. Although I wish to believe that I can make the tag working again.

SystemInfo - please see screenshot attached.

Thank you,

Boris.

[Brian TIDAL]

Hi Boris,

the Firmware inside the STM32L031K of the STEVAL-SMARTAG1 is supposed to reformat the tag in case the CC in block #0 is incorrect (see NfcType5_NDEFInitHeader() in SmarTagAppStart()). The issue you described may be caused by an incorrect FW (in case someone else has used this board) or an HW issue on the board. I would suggest to reload the FW from  FP-SNS-SMARTAG1 using the procedure described in UM2389. You can also enable the printf (see the readme.txt file in the package).

Rgds

BT