How to launch properly application to read NFC tag with an NFC03A1 nucleo attached to a NUCLEO F091RC ?

[KBens.1]

Hello,

I am trying to read some NFC tag with a X-NUCLEO-NFC03A1 attached to a NUCLEO F091RC board. I am a beginner into those technology, so basically I was trying to load the sample "NFC Detect " from the package "X-CUBE-NFC3" wich can be found on ST official website to understand how to use NFC stuff. The problem is, I tried to build the project on the STM32 IDE Cube, and it worked fine, but i can't read anything on the NFC NUcleo's antenna after running the programm.

I suppose there are problems of initialisation , but i have no idea how to debug this.

Thanks you for your time,

Best Regards,

Karim

[KBens.1]

Hi Brian ,

Yes it's my fault, I wasn't very clear about my explications. Thanks to you now I have more knowledge about RFID to explain my situation :

Regarding the T2T issue ;

According to the NFC tool android application, it's an NXP MIFARE Ultralight- NTAG 213

But i don't understand how you manage to find the Control lock TLV on adress 16, because when I study the data sheet , it's only for user memory :

https://www.nxp.com/docs/en/data-sheet/NTAG213_215_216.pdf

Regarding the M24LR (T5T)

After formating from X PACKAGE application, and write through X PACKAGE application too, i can read on the android application :

And the memory :

Then i tried to modify the message and read back the memory again :

And when I try to read it back on the X PACKAGE application, it's working fine :

But, i am now trying to understand why the adress n°05; 06; 07 has changed when i modified the message.

Thanks,

Best regards,

Karim

[Brian TIDAL]

Hi Karim,

for T2T: as per the NFC Forum Technical Specification T2T v1.0, different TLV can be present after the Capability Container: Null TLV, Lock Control TLV, Memory Control TLV, etc.

For the M24LR, the NDEF TLV starts at address 4:

• 0x03 is the T-field for a NDEF Message TLV
• 0x1E/0x17 is the L-field. As your message has a different size than the initial message, the L-field has changed

For more information, see:

• Type 2 Tag Technical Specification Version 1.0
• Type 5 Tag Technical Specification Version 1.0
• NFC Data Exchange Format Technical Specification Version 1.0

Rgds

BT

[KBens.1]

Hello Brian,

Thanks you for all your informations . I have a lot more understanding of the hardware and software, i will come back for any further questions :)

Best regards,

Karim

[KBens.1]

Hello Brian,

For the final step on my project with those elements, i would like to adress specific value on memory blocks of the M24LRE EEPROM. According to this document, it exist function avaible to do such : https://www.st.com/resource/en/application_note/cd00271422-developing-your-m24lr64-r-datalogger-application-for-temperature-acquisition-stmicroelectronics.pdf

But I can't find ST IDE compatible projects to experiments this functions. Do you know if there is any example available on ST IDE ?

To be more clear, i need to learn how to write on the EEPROM memory blocks, to interact with an another application, wich answer depending on the EEPROM memory blocks value.

I am still using nucleo F091RC and NFC03A1 to interact with the M24 tag.

Best regards,

Karim

[Brian TIDAL]

Hi,

M24LR is a dual interface EEPROM:

ST25R95 <--- RF ---> M24LR <--- I2C ---> MCU

On RF side, the M24LR64E-R follows the ISO/IEC 15693 standard and the physical memory is organized in block of 4 bytes. Due to memory capacity, the read/write commands (such as Read Single Block/Read Multiple Blocks, Write Single Block or Write Multiple Blocks) have been extended to support 2-bytes block address. This is supported through the following RFAL API in rfal_st25xv.c:

• rfalST25xVPollerM24LRReadSingleBlock
• rfalST25xVPollerM24LRWriteSingleBlock
• rfalST25xVPollerM24LRReadMultipleBlocks
• etc.

Rgds

Bruno

[KBens.1]

Hello Brian (Bruno ? )

Thanks you again for those very precise informations. It was exactly the functions I was looking for. But i am encoutering some problems with the arguments of the functions (especially with UID and FLAG arguments) . Would it be possible to get an example of the rfalST25xVPollerM24LRReadSingleBlock and rfalST25xVPollerM24LRWriteSingleBlock functions ?

It's the final step on my project.

Best regards,

Karim

[Brian TIDAL]

Hi,

see demoNfcv() in demo.c for example of how to set UID and flag parameters.

Basically

uid = nfcvDev->InvRes.UID and flag = RFAL_NFCV_REQ_FLAG_DEFAULT

Rgds

BT

[KBens.1]

Hello,

Thanks you again for your advice. I studied the rfal_st25xv.c librarie to understand how I could manage to read and write into the memory blocks. As you noticed me, the demoNfcv() as been created to do so. I tried to use it,I copied/pasted it to the ndef_demo.c file, because i can't run it from the demo.c file (wich has been like excluded from the project) :

I am still using the M24 tag, so I am calling the function at the right place, when an ISO15693 has been detected.

As you can see i have put the demoNfcv function.

And now i got a read block error, but no error code is returned, so i can't understand why it is failling :

Best Regards,

Karim

[Brian TIDAL]

Hi Karim,

the demoNfcv uses rfalNfcvPollerReadSingleBlock() whereas a M24LR64 tags has a extended block number coding.

rfalNfcvPollerReadSingleBlock() works for standard ISO15693 tags whereas rfalST25xVPollerM24LRReadSingleBlock has to be used for M24LR64 or M24LR16 tags.

If you want to read a block from a M24LR16 or M24LR64 tag, you just need to replace rfalNfcvPollerReadSingleBlock by rfalST25xVPollerM24LRReadSingleBlock in the demoNfcv.

Rgds

BT

[KBens.1]

Hello Brian,

I tried to replace rfalNfcvPollerReadSingleBlock()  by the rfalST25xVPollerM24LRReadSingleBlock function. Here in the code (ndef_demo.c) :

I added a static variable with the asked structure :

And I just replaced the demoNdef(nfcDevice) originally in the code by the demoNfcv() .

No error or warining during compilation, but when I am trying to read through the application, still got read block fail :

Best regards,

Karim