ContextQMD
Back to Zephyr

Overview

boards/arduino/giga_r1/doc/index.rst

4.4.04.6 KB
Original Source

.. zephyr:board:: arduino_giga_r1

Overview

Arduino GIGA R1 WiFi is a development board by Arduino based on the STM32H747XI, a dual core ARM Cortex-M7 + Cortex-M4 MCU, with 2MBytes of Flash memory and 1MB SRAM.

The board features:

  • RGB LED
  • Reset and Boot buttons
  • USB-C device
  • USB Host
  • 16MB external QSPI flash
  • 8MB external SDRAM
  • Murata Type 1DX Bluetooth + WiFi module (CYW4343W based)
  • Audio jack
  • ATECC608A secure element

More information about the board, including the datasheet, pinout and schematics, can be found at the Arduino GIGA website_.

More information about STM32H747XIH6 can be found here:

  • STM32H747XI on www.st.com_
  • STM32H747xx reference manual_
  • STM32H747xx datasheet_

Supported Features

.. zephyr:board-supported-hw::

Fetch Binary Blobs

The board Bluetooth/WiFi module requires fetching some binary blob files, to do that run the command:

.. code-block:: console

west blobs fetch hal_infineon

Resources sharing

The dual core nature of STM32H747 SoC requires sharing HW resources between the two cores. This is done in 3 ways:

  • Compilation: Clock configuration is only accessible to M7 core. M4 core only has access to bus clock activation and deactivation.
  • Static pre-compilation assignment: Peripherals such as a UART are assigned in devicetree before compilation. The user must ensure peripherals are not assigned to both cores at the same time.
  • Run time protection: Interrupt-controller and GPIO configurations could be accessed by both cores at run time. Accesses are protected by a hardware semaphore to avoid potential concurrent access issues.

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the arduino_giga_r1 board should be built per core target, using either arduino_giga_r1/stm32h747xx/m7 or arduino_giga_r1/stm32h747xx/m4 as the target.

See :ref:build_an_application for more information about application builds.

Flashing

This board can be flashed either using dfu-util, or with an external debugging probe, such as a J-Link or Black Magic Probe, connected to the on board MIPI-10 SWD port marked as "JTAG".

.. note::

The board ships with a custom Arduino bootloader programmed in the first flash page that can be triggered by double clicking the RST button. This bootloader is USB-DFU compatible and supports programming both the internal and external flash and is the one used by west flash by default. The internal STM32 ROM bootloader can also be used by pressing RST while holding the BOOT0 button, this also supports USB-DFU but can only program the internal flash and can overwrite the Arduino bootloader. More details can be found in the "Boot0" section of the Arduino GIGA Cheat Sheet_.

First, connect the Arduino GIGA R1 board to your host computer using the USB port to prepare it for flashing. Double click the RST button to put the board into the Arduino Bootloader mode. Then build and flash your application.

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

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: arduino_giga_r1/stm32h747xx/m7 :goals: build flash

Run a serial host program to connect with your board:

.. code-block:: console

$ minicom -D /dev/ttyACM0

You should see the following message on the console:

.. code-block:: console

Hello World! arduino_giga_r1

Similarly, you can build and flash samples on the M4 target.

Here is an example for the :zephyr:code-sample:blinky application on M4 core.

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: arduino_giga_r1/stm32h747xx/m4 :goals: build flash

Debugging

Debugging is supported by using west debug with an external probe such as a J-Link or Black Magic Probe, connected to the on board MIPI-10 SWD port marked as "JTAG". For example::

west debug -r jlink

.. _Arduino GIGA website: https://docs.arduino.cc/hardware/giga-r1-wifi

.. _Arduino GIGA Cheat Sheet: https://docs.arduino.cc/tutorials/giga-r1-wifi/cheat-sheet

.. _STM32H747XI on www.st.com: https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus/stm32-high-performance-mcus/stm32h7-series/stm32h747-757/stm32h747xi.html

.. _STM32H747xx reference manual: https://www.st.com/resource/en/reference_manual/dm00176879.pdf

.. _STM32H747xx datasheet: https://www.st.com/resource/en/datasheet/stm32h747xi.pdf

.. _dfu-util: http://dfu-util.sourceforge.net/build.html