.. zephyr:board:: nrf7120dk

Overview

The nRF7120 Development Kit hardware provides support for the Nordic Semiconductor nRF7120 Arm Cortex-M33 CPU.

Hardware

nRF7120 DK has two crystal oscillators:

High-frequency 64 MHz crystal oscillator (HFXO)
Low-frequency 32.768 kHz crystal oscillator (LFXO)

The crystal oscillators can be configured to use either internal or external capacitors.

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the nrf7120dk/nrf7120/cpuapp board target can be built, flashed, and debugged in the usual way. See :ref:build_an_application and :ref:application_run for more details on building and running.

Applications for the nrf7120dk/nrf7120/cpuflpr board target need to be built using sysbuild to include the vpr_launcher image for the application core.

Enter the following command to compile hello_world for the FLPR core:

.. code-block:: console

west build -p -b nrf7120dk/nrf7120/cpuflpr --sysbuild

Flashing

As an example, this section shows how to build and flash the :zephyr:code-sample:hello_world application.

.. warning::

When programming the device, you might get an error similar to the following message::

ERROR: The operation attempted is unavailable due to readback protection in
ERROR: your device. Please use --recover to unlock the device.

This error occurs when readback protection is enabled. To disable the readback protection, you must recover your device.

Enter the following command to recover the core::

west flash --recover

The --recover command erases the flash memory and then writes a small binary into the recovered flash memory. This binary prevents the readback protection from enabling itself again after a pin reset or power cycle.

Follow the instructions in the :ref:nordic_segger page to install and configure all the necessary software. Further information can be found in :ref:nordic_segger_flashing.

To build and program the sample to the nRF7120 DK, complete the following steps:

First, connect the nRF7120 DK to you computer using the IMCU USB port on the DK. Next, build the sample by running the following command:

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: nrf7120dk/nrf7120/cpuapp :goals: build flash

Testing the LEDs and buttons in the nRF7120 DK

Test the nRF7120 DK with a :zephyr:code-sample:blinky sample.