L072CZTx not showing up as a Virtual Com Port

[David_ZG]

Hello all,

 

Im Currently working with my own Hardware with the L072CZTx on it.

I want to use a Terminal over the 2 USB Pins.(USB_DP and USB_DM)

I activated the Clocks with 48MHz

Activated USB

Activated USB_ Device as a Communication Device Class(Virtual Port COM)

 

I got told i should see it in the Device Manager as a Com Port or a unidentified Device.

Sadly i can only see my V3set im using to Programm the Controller with (SWD).

 

If very new to Programming with STM32 and if you have any ideas that could fix it i would really appreciate it.

 

Thank you in Advance

[Andrew Neil]

Welcome to the forum

Please see How to write your question to maximize your chances to find a solution for best results.

 

very new to Programming with STM32

Do you have experience with any other microcontrollers ?

With USB in general ?

 

USB isn’t really a beginner’s project ...

[David_ZG]

I Used the Nucleo board with the L073 mC on it before to create a Prototyp of the Project i work on right now. Everything worked fine but it was with Uart.

 

For the USB Part i used a different Nucleo board with a USER_USB port on it but its completely Different then the mC that i use now it had THREADX and USBX.

I was kind of thrown into cold water with this Project

[FBL]

Hi ​@David_ZG ,

Are you using an external USB receptacle with the NUCLEO-L073RZ?

We have a CDC ACM Virtual COM Port example that has been tested on the STM32L073Z-EVAL board. You can port this example to the NUCLEO board using the legacy core middleware, without USBX.

However, please be careful to verify your custom hardware setup, as it is dependent on the board design and wiring.