boards: arm: Add steval_fcu001v1 board support

BSP for steval_fcu001v1 resubmitted as per PR #18746

Signed-off-by: NavinSankar Velliangiri <navin@linumiz.com>

boards/arm/steval_fcu001v1/doc/index.rst

@@ -0,0 +1,161 @@
+.. _steval_fcu001v1:
+
+STM32 Flight Controller Unit
+############################
+
+Overview
+********
+
+The STEVAL-FCU001V1 is a Cortex M4 MCU-based flight controller unit for toy quad-copter drones.
+
+.. figure:: img/steval_fcu001v1.jpg
+     :width: 753px
+     :align: center
+     :height: 699px
+     :alt: STM32 Flight Controller Unit
+
+Hardware
+********
+
+STM32 Flight Controller Unit provides the following hardware components:
+
+- STM32F401CC in UFQFPN48 package
+- ARM |reg| 32-bit Cortex |reg|-M4 MCU with FPU
+- 84MHz max MCU frequency
+- VDD from 1.7 V to 3.6 V
+- 256 KB FLASH
+- 64 KB SRAM
+- General Purpose Timers
+- Watchdog Timers (2)
+- On board sensors:
+
+  - 3D Accelerometer and 3D Gyroscope: LSM6DSL
+  - 3D Magnetometer: LIS2MDL
+  - MEMS Pressure sensor: LPS22HD
+
+- 2 User LEDS
+- USART/UART (1)
+- I2C (1)
+- Bluetooth LE over SPI
+
+More information about the STM32 Flight Controller Unit
+can be found in these documents:
+
+- `STEVAL_FCU001V1 website`_
+- `STM32F401 reference manual`_
+- `STM32F401CC on www.st.com`_
+
+Supported Features
+==================
+
+The Zephyr steval_fcu001v1 board configuration supports the following hardware features:
+
++-----------+------------+------------------------------------+
+| Interface | Controller | Driver/Component                   |
++===========+============+====================================+
+| NVIC      | on-chip    | nested vector interrupt controller |
++-----------+------------+------------------------------------+
+| UART      | on-chip    | serial port-polling;               |
+|           |            | serial port-interrupt              |
++-----------+------------+------------------------------------+
+| PINMUX    | on-chip    | pinmux                             |
++-----------+------------+------------------------------------+
+| GPIO      | on-chip    | gpio                               |
++-----------+------------+------------------------------------+
+| PWM       | on-chip    | pwm                                |
++-----------+------------+------------------------------------+
+| I2C       | on-chip    | i2c                                |
++-----------+------------+------------------------------------+
+
+
+The default configuration can be found in the defconfig file:
+``boards/arm/steval_fcu001v1/steval_fcu001v1_defconfig``
+
+Default Zephyr Peripheral Mapping:
+----------------------------------
+
+- UART_1 TX/RX : PA9/PA10
+- I2C2 SCL/SDA : PB10/PB3
+- PWM_2_CH1    : PA0
+- LD1          : PB5
+- LD2          : PB4
+
+System Clock
+============
+
+The steval_fcu001v1 system clock can be driven by an internal or external oscillator,
+as well as by the main PLL clock. By default, the system clock is driven by the PLL clock at 84MHz,
+driven by a 16MHz high-speed external clock.
+
+Serial Port
+===========
+
+The steval_fcu001v1 board has one UART. The Zephyr console output is assigned to UART1.
+Default settings are 115200 8N1.
+
+I2C
+===
+
+The steval_fcu001v1 board has one I2C. The default I2C mapping for Zephyr is:
+
+- I2C2_SCL : PB10
+- I2C2_SDA : PB3
+
+Programming and Debugging
+*************************
+
+Applications for the ``steval_fcu001v1`` board configuration can be built and
+flashed in the usual way (see :ref:`build_an_application` and
+:ref:`application_run` for more details).
+
+Flashing
+========
+
+Flashing Zephyr onto the steval_fcu001v1 board requires an external ST-LINK/V2-1 programmer.
+The programmer is attached to the P8 programming header with ARM-JTAG-20-10-Plug-in Adapter.
+
+Flashing an application to STEVAL_FCU001V1
+------------------------------------------
+
+Connect the FT232-to-USB port to host system, and RX, TX, Gnd pins to
+the P7 header of the steval_fcu001v1 board.  Then run a serial host
+program to connect with your steval_fcu001v1 via the FT232 board:
+
+.. code-block:: console
+
+   $ minicom -D /dev/ttyUSB0
+
+Now build and flash an application. Here is an example for :ref:`hello_world`
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: steval_fcu001v1
+   :goals: build flash
+
+You should see the following message on the console:
+
+.. code-block:: console
+
+   Hello World! steval_fcu001v1
+
+Debugging
+=========
+
+You can debug an application in the usual way. Here is an example for the
+:ref:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: steval_fcu001v1
+   :maybe-skip-config:
+   :goals: debug
+
+.. _STEVAL_FCU001V1 website:
+   https://www.st.com/en/evaluation-tools/steval-fcu001v1.html
+
+.. _STM32F401CC on www.st.com:
+   https://www.st.com/en/microcontrollers-microprocessors/stm32f401cc.html
+
+.. _STM32F401 reference manual:
+    http://www.st.com/resource/en/reference_manual/dm00096844.pdf
+