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Ux_Device_CDC_ACM Application - UART

Babaluis
Associate

I am trying to get the Ux_Device_CDC_ACM application working on the NUCLEO-U5A5ZJ-Q development board.  I see the VCOM port activated on the PC but how do I get the UART port?  It appears that the application writes from the UART port to the VCOM port and vice-versa, but it is not clear how to connect the UART.  Do I use an FTDI cable somehow? Or is it on the USB-C connector?

 

2 REPLIES 2
FBL
ST Employee

Hi @Babaluis & welcome to ST Community :) 

Thank you for your question! Typically, this example emulates the USB - UART bridge. 

UART port is available on the NUCLEO-U5A5ZJ-Q board and can be accessed via the appropriate UART pins (TX and RX). UART GPIO configuration for this example is here 

You don't need an FTDI cable. In this example you can ping pong UART data between STLink VCP and User VCP. You can open two hyperterminals (USB com port and UART com port(USB STLink VCP)) to send/receive data to/from host from/to device.

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

When I open Device Manager I only see one com port: "STLink Virtual COM Port (COM4)".  How do I get the other com port?