Using VCP on Nucleo-H7S3L8

isso · ‎2025-08-07

Split from: Nucleo-H7S3L8 Board in Arduino IDE - this is a new question.

Hi @Andrew Neil
Trying to send text via USART3 (which is linked to the virtual com ST LINK USB, correct?) and show it with Putty. But as I see the USART3 in the MX is disabled (grayed out) that I cannot configure it. Any help with that?

isso · ‎2025-08-07

So I unchecked Virtual COM Port in the ioc config and USART3 seems to be available now. But I often get this window msg from time to time. I'm sure I keep checking for updates but still get it oftentimes.

Andrew Neil · ‎2025-08-07

That's just telling you that the UART is being managed by the BSP - so you don't need to configure it yourself.

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Andrew Neil · ‎2025-08-07

So did you see the Firmware Updater - as it says?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

isso · ‎2025-08-07

Sure thing! but it keeps coming back from time to time..
Now works fine though!

I'm trying to get USART3 to send a "hello world"-like via the VCP and show it on Putty. I configured USRAT3 via the MX .ioc and also set PD8,9 pins for the tx rx functions, 15200, etc..
But cannot show anything on terminal.. is there an example for such simple task as a guide?