boards: nrf_bsim: Document how to use the console with bsim

This commit describes how to build and run applications using
the console. This documentation is added because it may
not be obvious how this is done. That is, sometimes a user
may believe that the terminal launching the application is the
the console which is not the case.

Signed-off-by: Rubin Gerritsen <rubin.gerritsen@nordicsemi.no>

Author: rugeGerritsen

boards/native/nrf_bsim/doc/nrf52_bsim.rst

@@ -171,6 +171,33 @@ Run them with ``-help`` for more information.
 You can find more information about how to run BabbleSim simulations in
 `this BabbleSim example <https://babblesim.github.io/example_2g4.html>`_.
 
+Running an application using the console
+========================================
+
+Some applications require the use of a console to interact with the user.
+These applications typically enable :kconfig:option:`CONFIG_CONSOLE_SUBSYS` and :kconfig:option:`CONFIG_CONSOLE_GETCHAR`.
+The UART console is disabled by default for BabbleSim boards, to enable it simply add the snippet :ref:`snippet-uart-console`.
+
+.. code-block:: console
+
+   west build -S serial-console [...]
+
+To view the output and interact with the application the user needs to connect a terminal to this pseudoterminal.
+
+.. code-block:: console
+
+   # Automatically attach to the terminal
+   ./build/zephyr/zephyr.exe --uart<uart_id>_pty_attach
+   # Use a custom command to attach to the terminal, for example 'xterm -e screen %s &'
+   ./build/zephyr/zephyr.exe --uart<uart_id>_attach_cmd=<cmd>
+   # Use a custom way to connect to the pseudoterminal
+   ./build/zephyr/zephyr.exe --uart<uart_id>_pty --uart_pty_wait
+   minicom -D /dev/pts/<pts_id>
+
+The command line option ``--uart_list`` prints out the mapping between ``uart_id`` and the UART peripherals.
+The overlay files describes which UART peripheral is being used as the console output.
+
+For more details about attaching to the UART output, refer to the output of the ``-help`` option of the executable.
 
 C library choice
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