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CT-55555
Senior
October 16, 2023
Solved

R/W a Tag using ST25R3916

Hello everyone, 

I want to Read / Write a Tag using the X-Nucleo - NFC08A1. The demo project(polling) runs perfectly. I also installed X-Cube-NFC6. Which rfal libary is the best and how do I implement the function in the main.c.

 

Tnak you for helping

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Brian TIDAL
Brian TIDALBest answer
ST Technical Moderator
October 18, 2023

Hi,

basically, the demo provides an almost turnkey solution: after some initialization, the main() loops on MX_X_CUBE_NFC6_Process() that does the job to detect a tag and reads its unique ID. Then, when a type V tag has been discovered, the demoCycle calls demoNfcv where the user can add its own code  for his application.

demoNfcv provides a example of reading the block #1 of a type 5 tag with the function rfalNfcvPollerReadSingleBlock. You just need to modify the code in demoNfcv to read the various blocks required by your application with rfalNfcvPollerReadSingleBlock

Rgds

BT

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15 replies

Brian TIDAL
Brian TIDAL
ST Technical Moderator
October 17, 2023

Hi,

I would suggest to reuse the demo project you have built and to base your application on top of it.

Rgds

BT

 

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CT-55555Author
Senior
October 17, 2023

Hello Brian, 

I tried you'r suggestion, but I'am not sure how to built the application on top of the base. 

I have a NFC-Tag type V and I want to use the function: static void demoNfcv(rfalNfcvListenDevice *nfcvDev). Which steps are needed to use this function ?

Rgds

 

Brian TIDAL
Brian TIDAL
ST Technical Moderator
October 17, 2023

Simple: include your code in this function :)

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CT-55555Author
Senior
October 17, 2023

Sorry but I don't really get it. I'am new to STMCubeIde. Can you explain ist a little more specific. I got my main.c and the demo_polling.c. Which steps are needed to get this function running.

Thank you for you're help. 

Brian TIDAL
Brian TIDAL
ST Technical Moderator
October 17, 2023

Hi,

When reading back https://community.st.com/t5/st25-nfc-rfid-tags-and-readers/problem-to-connect-nucleo-nfc08a1-with-stm32f205vet6-via-spi/td-p/598247 and "The demo project(polling) runs perfectly." my understanding is that you've been able to generate the polling application from STM32CubeMX and been able to run it on your custom board.

Did I miss something?

Rgds

BT

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CT-55555Author
Senior
October 18, 2023

Hi, 

that is correct. I'm able to detect different types of NFC-Tag's with the demo polling.

Rgds

CT-55555Author
Senior
October 18, 2023

So if I put a Tag next to the reader the LED's show me which type of Tag is used. But now I want to read and write a Tag. 

Rgds

 

Brian TIDAL
Brian TIDALBest answer
ST Technical Moderator
October 18, 2023

Hi,

basically, the demo provides an almost turnkey solution: after some initialization, the main() loops on MX_X_CUBE_NFC6_Process() that does the job to detect a tag and reads its unique ID. Then, when a type V tag has been discovered, the demoCycle calls demoNfcv where the user can add its own code  for his application.

demoNfcv provides a example of reading the block #1 of a type 5 tag with the function rfalNfcvPollerReadSingleBlock. You just need to modify the code in demoNfcv to read the various blocks required by your application with rfalNfcvPollerReadSingleBlock

Rgds

BT

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    CT-55555Author
    Senior
    October 18, 2023

    Hi Brian, 

    I found my mistake and I realise how stupid it was thank you for you're patience. Now I just need to see the messages from plaformLog(). It uses Usart am I right ? So therefore you just need a terminal to read the COM-Port or is there something I am missing ? 

     

    Rgds 

    Brian TIDAL
    Brian TIDAL
    ST Technical Moderator
    October 18, 2023

    Hi,

    by default, platformLog() uses an UART/USART serial interface bridged by the ST-Link to an USB Virtual Com Port (VCP). So you just need a serial terminal on your PC connected to this VCP.  The platformLog() function-like macro can be easily customized to use your own log mechanism. 

    Rgds

    BT

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    CT-55555Author
    Senior
    October 19, 2023

    Hi, 

    I'm using USART1 on the STM32F205VET6( PA10 - RX, PA9 - TX). I also use a USB interface converter and connected RX(STM32) with TX(Converter) and TX(STM32) with RX(Converter) and dont receive any messanges on the terminal. 

    Rgds

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