How to open several serial consoles

Applicable for

1. Open 2 serial consoles in STM32CubeIDE[edit | edit source]

For example, on OS Ubuntu, they are available as USB0 & ACM0.

The default one (ACM0 or USB0) is used for the Arm^®-Cortex^®-A35 (OSTL). It is available clicking on "MPU Serial console icon" . It is recommended to detach the associated windows. This can be done thanks to right menu on Console tab.
An additional console (ACM1 or USB1) is needed for Arm^®-Cortex^®-M33 (FwST-M). To add a console, goes in menus Window > Show View > Other... then Connections > Connections window. New connection icon opens a wizard where Serial Port can be selected.
Configure it for example set in "Serial Port": "/dev/ttyUSB1" and click on finish.

Then, open a new the console with Open Console icon from Console window, then Command Shell Console and select the new serial configuration that you generated previously in Connections setting.
It is possible to detach it to have the two consoles always displayed or you can click again on Open Console icon and select New Console View.

In the console window, a button Display Selected Console is also available to select which console to display.

2. Open 2 serial consoles with minicom[edit | edit source]

It is possible to access to the serial consoles via a serial communication program out of CubeIDE. The serial terminal allows communicating with the board through an UART serial interface.

Several programs exists, but below you have a description with "minicom".

Install minicom

sudo apt-get install minicom

Get the ttyACM device instance that needs to be used to access the ST-LINK/V3EC

ls /dev/ttyACM*
/dev/ttyACM0  /dev/ttyACM1

or the ttyUSB device if you are on STM32MP21

ls /dev/ttyUSB*
/dev/ttyUSB0  /dev/ttyUSB1

Connect the minicom to the /dev/ttyACM0 device (or /dev/ttyUSB0), which is related to A35.

minicom -D /dev/ttyACM0
Welcome to minicom 2.8

OPTIONS: I18n 
Port /dev/ttyACM0, 15:56:03

Press CTRL-A Z for help on special keys

Open a new terminal and open the CM33 console by choosing /dev/ttyACM1 or /dev/ttyUSB1:

minicom -D /dev/ttyACM1
Welcome to minicom 2.8

OPTIONS: I18n 
Port /dev/ttyACM1, 15:56:03

Press CTRL-A Z for help on special keys