libreVNA Communication with MATLAB

[Frankshah007]

Hello Everyone,
I wanted to connect my libreVNA with MATLAB. As it doesnot create any COM port, I am having difficulties to coonect with MATLAB. Can anyone give me a code for MATLAB to handshake with libreVNA ? Any ideas is highly appreciated.

Thank You Everyone

[jankae]

There is no direct support for Matlab. The LibreVNA uses a custom USB protocol, which explains why it does not show up as a COM port. And even if it did, you would need to implement the protocol between the LibreVNA and the LibreVNA-GUI. It is documented here, but I don't recommend you try that route (you would need to implement all the data parsing and VNA calibration routines yourself, since these are handled on the PC-side).

Instead, I suggest you look into controlling the LibreVNA-GUI via Matlab (it supports SCPI over a TCP-Server, I am sure Matlab can work with that). The documentation for the SCPI API is here.

[jankae]

No, I meant the actual example I provided: https://github.com/jankae/LibreVNA/blob/master/Documentation/UserManual/SCPI_Examples/simple_generator_control.py

Please try that first. If you are not getting any response with that as well, you don't even need to attempt it with Matlab. But if it works, something must be going wrong with your Matlab code.

[PrabhavManchanda]

I have never used python, I get the following error on pycharm:

Traceback (most recent call last):
File "C:\Users\manchanda\PycharmProject\equations\main.py", line 4, in
from libreVNA import libreVNA
ModuleNotFoundError: No module named 'libreVNA'

[jankae]

You need the libreVNA.py file in the same folder

[PrabhavManchanda]

Still gives me the same error

[PrabhavManchanda]

Yeah, but I edited the code and used the libreVNA code inside the simple_generator, it works now. The GUI is also showing external influence of the code.
Thank you for the help