.. zephyr:board:: apollo4p_blue_kxr_evb

Apollo4 Blue Plus KXR EVB is a board by Ambiq featuring their ultra-low power Apollo4 Blue Plus SoC.

Hardware

Apollo4 Blue Plus SoC with upto 192 MHz operating frequency
ARM® Cortex®-M4F core
64 kB 2-way Associative/Direct-Mapped Cache per core
Up to 2 MB of non-volatile memory (NVM) for code/data
Up to 2.75 MB of low leakage / low power RAM for code/data
384 kB Tightly Coupled RAM
384 kB Extended RAM
Bluetooth 5.1 Low Energy

For more information about the Apollo4 Blue Plus SoC and Apollo4 Blue Plus KXR EVB board:

Apollo4 Blue Plus Website_
Apollo4 Blue Plus Datasheet_
Apollo4 Blue Plus KXR EVB Website_

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

Flashing an application

Connect your device to your host computer using the JLINK USB port. The sample application :zephyr:code-sample:hello_world is used for this example. Build the Zephyr kernel and application, then flash it to the device:

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: apollo4p_blue_kxr_evb :goals: flash

.. note:: west flash requires SEGGER J-Link software_ and pylink_ Python module to be installed on you host computer.

Open a serial terminal (minicom, putty, etc.) with the following settings:

Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1

Reset the board and you should be able to see on the corresponding Serial Port the following message:

.. code-block:: console

Hello World! apollo4p_blue_kxr_evb

.. _Apollo4 Blue Plus Website: https://ambiq.com/apollo4-blue-plus/

.. _Apollo4 Blue Plus Datasheet: https://contentportal.ambiq.com/documents/20123/388410/Apollo4-Blue-Plus-SoC-Datasheet.pdf

.. _Apollo4 Blue Plus KXR EVB Website: https://www.ambiq.top/en/apollo4-blue-plus-kxr-soc-eval-board

.. _SEGGER J-Link software: https://www.segger.com/downloads/jlink

.. _pylink: https://github.com/Square/pylink