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can't find VCP in device manager ( it was before! )

medyassinetouati
Associate

Hello, i have an issue with my board's vcp : stm32f407g-disc1 / MB997E

the st link port works perfectly , but the micro usb port ( vcp ) is not working , 
and yes i'm sure that it's a data cable not only charging, 
the interesting point is that before few months it was working on my laptop with the same cable, i can find two of them st-link vcp , and vcp , but now when i plug in the both cables , only i get st-link in the device manager,
i didn't make any update or removing drivers or that kind of stuff

here is what it's supposed to be in the device manager list : 

medyassinetouati_0-1740859708087.png

and here is what i get now : ( only the st-link one )

medyassinetouati_1-1740859789514.png


any idea how to solve it ? or if there's a specific driver that needs to be reinstalled or idk..

2 REPLIES 2
Gyessine
ST Employee

Hello @medyassinetouati 

I tried to replicate the issue, but I couldn't reproduce it

I attached the whole project as a zip file 

 run the project and check device manager for your VCP number and visualize the result using your favorite serial monitor tool (example: putty, teraterm ...)

 

Gyessine_2-1742209042826.png

 


@medyassinetouati wrote:

 now when i plug in the both cables , only i get st-link in the device manager,..


Have you changed the code on the discovery board?

Does the PC see anything at all when you plug it in?

micro usb connectors can be quite fragile - check carefully for damage & failed connections ...