boards: IAR STMF429II-ACA documentation fixes

The IAR STM32F429II-ACA evaluation board features an ARM Cortex-M4 based STM32F429II MCU.

Here are some highlights of the STM32F429II-ACA board:

- STM32 microcontroller in LQFP144 package

- STM32 microcontroller in LQFP176 package

- JTAG/SWD debugger/programmer interface

- Flexible board power supply

The STM32F429II-ACA evaluation board provides the following hardware components:

- STM32F429II in LQFP144 package

- STM32F429II in LQFP176 package

- ARM |reg| 32-bit Cortex |reg| -M4 CPU with FPU

- 180 MHz max CPU frequency

- VDD from 1.8 V to 3.6 V

Serial Port

===========

By default, the STM32F429II-ACA evaluation board has no physical serial port available.

The ``stm32f429ii_aca`` board has no physical serial port available.

The board has up to 8 UARTs, of which none are used.

USB Port

========

The STM32F429II-ACA evaluation board has a USB HS capable Mini-USB port. It is connected to the on-chip

OTG_HS peripheral.

The ``stm32f429ii_aca`` board has a USB HS capable Mini-USB port.

It is connected to the on-chip OTG_HS peripheral.

Programming and Debugging

*************************

The ``stm32f429ii_aca`` board supports the runners and associated west

commands listed below.

.. zephyr:board-supported-runners::

Applications for the ``stm32f429ii_aca`` board configuration can be built

and flashed in the usual way (see :ref:`build_an_application` and

:ref:`application_run` for more details).

Flashing

========

In order to flash this board using west, an external debug probe such as a Segger J-Link

has to be connected through the JTAG/SWD connector on the board.

By default, the board is set to be flashed using the jlink runner.

Alternatively, openocd, or pyocd can also be used as runners to flash the board using

the ``--runner`` (or ``-r``) option:

.. code-block:: console

   $ west flash --runner openocd

   $ west flash --runner pyocd

The IAR STM32F429II-ACA board has a MIPI20 connector to an JTAG/SWD interface

that can be used to program the MCU and then debug the application. This

interface can be used with an external debug probe such as a Segger J-Link.

First, connect the STM32F429II-ACA evaluation board to your host computer using

your debug probe through the JTAG/SWD connector to prepare it for flashing.

Then build and flash your application.

In preparation for flashing, connect the ``stm32f429ii_aca`` board's MIPI20

DEBUG/TRACE interface to your external debug probe and then connect the debug

probe to your host computer.

Here is an example for the :zephyr:code-sample:`blinky` application.

   :board: stm32f429ii_aca

   :goals: build flash

LED0 should then begin to blink continuously with a 1-second delay.

LED1 should then begin to blink continuously with a 1-second delay.

By default, the board uses the jlink runner for flashing operations.

Alternative runners for openocd or pyocd are also available and they are

accessible through the ``--runner`` (or ``-r``) option:

.. code-block:: console

   $ west flash --runner openocd

   $ west flash --runner pyocd

References

**********

.. target-notes::

.. _stm32f429ii-aca-schematics:

   https://iar.my.salesforce.com/sfc/p/#30000000YATY/a/Qx000000vZVh/EzlIqYKIBVXN8PN4Q8MgtowSZrR_vZarwLiNJXw7UJw

   https://mypages.iar.com/s/article/Schematics-for-IAR-Academy-STM32F429II-ACA-evaluation-board

.. _STM32F429II on www.st.com:

   https://www.st.com/en/microcontrollers-microprocessors/stm32f429ii.html