Python support for UHF RFID ST25RU3993-HPEV

[TNgo.1]

Currently I am working on a project that uses the UHF RFID evaluation board ST25RU3993-HPEV, which is controlled by STM32L476RG.

For my project, I want to use Raspberry Pi to communicate with the evaluation board, so the use of Python is required. However, the Python code, according to ST, is still under development.

So I am wondering how I can approach this or if anyone has worked on this before? Appreciate all your kind support.

[Cedric Dalban]

hello Vmai,

at first sight your setup seems to be ok.

It is anyway recommended to add a power supply connected to the HPEV board.

At least your setup should reply with correct Board SW & HW versions.

2 points:

• did you try to run the Linux demo that is provided with our release ?
• could you please share the syslog traces your linux system generates while establishing connection between Raspberry and board ?

regards,

Cedric.

[Cedric Dalban]

Hello Vmai,

I confirm that:

• setting the appropriate path to libSTUHFL.so in libPath while calling loadLibrary()
• replacing '\' with '/' in all paths
• replacing comPort='COM{}' with comPort='/dev/ttyUSB{}' (file: STUHFL_demo.py, line: 57)

allows the connection between library and board to establish.

With these 3 listed modifications, the Python wrapper demo runs and completes correctly in Linux environment.

For the time being, the Python & java wrappers provided with release 3.0.0 have only been tested on Windows, the next release will ensure at least these 2 wrappers are correctly handled on Linux.

best regards,

Cedric.

[Vmai.1]

Hi @Cedric Dalban​ 

Thanks for your support.

Following your instruction, the python code is able to execute on my raspi without error.

you can see the log here : https://drive.google.com/file/d/188APc4586qijd9rovGrYNphe1QyF9oSZ/view?usp=sharing

thanks

Viet

[AHeit.1]

@Cedric Dalban​ 

I am getting this error

1. ***************************** CAUTION *****************************************
2. Cannot open STUHFL DLL:
3. {}
4.  
5. Please ensure STUHFL DLL has been generated before using STUHFL Python wrapper
6. *******************************************************************************

when I try to run the python wrapper. I have rebuilt the STUHFL.dll several times in VS2019, and have copied it and added it to many paths in my pycharm IDE. I am running SDK 3.0.0.0

Can you provide feedback?

Thanks