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X-NUCLEO-NFC09A1 read Tag data error

sami_josi
Visitor

Hi,

I am using the X-NUCLEO-NFC09A1 with the demo project “ST25R200_v3.0.0_Linux_demo_v1.0”.
The code is running on a Raspberry Pi 3B and communicates with the reader via SPI.

When I run the demo and place an NFC tag near the reader, the application reports “READ Fail”.

Could someone please explain what this error means and what might cause it?

Thank you.Skärmbild 2026-01-29 151630.png

1 REPLY 1
Ulysses HERNIOSUS
ST Employee

Hello sami_josi,

the demo is just basic polling plus sending one single command to demonstrate how to read data. The used commands should work on NFC Forum Tag types (T2T, T3T, T4T, T5T)

I assume the first card to be a Mifare Classic card which gets treated as a T2T and does not answer the un-encrypted Read BLOCK command.

The second card I am not sure, why, but the card seems to not support the reading of single block. So not being a T5T.

Please check the details of the cards and which commands they are actually supporting.

Best Regards, Ulysses