.. zephyr:board:: innblue21

Overview

The nRF9160 innblue21 is a cellular IoT sensor development board, which is based on the nRF9160 SiP, and features NB-IoT and LTE-M connectivity.

Hardware

The following parts are built into the board:

Accelerometer: ST LIS2DH12
CryptoElement: Atmel ATECC608a
Humidity Sensor: ST HTS221
Qi charger: TI BQ51013
Battery fuel gauge: TI BQ27421

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

LED

LED1 ( red ) = P0.7
LED2 (green) = P0.6
LED3 ( blue) = P0.5
LED4 ( red ) = P0.4

Push buttons and Switches

BUTTON1 = P0.31

Security components

Implementation Defined Attribution Unit. The IDAU is implemented with the System Protection Unit and is used to define secure and non-secure memory maps. By default, all of the memory space (Flash, SRAM, and peripheral address space) is defined to be secure accessible only.
Secure boot.

Programming and Debugging

.. zephyr:board-supported-runners::

innblue21 supports the Armv8m Security Extension, and by default boots in the Secure state.

Building Secure/Non-Secure Zephyr applications

The process requires the following steps:

Build the Secure Zephyr application using -DBOARD=innblue21 and CONFIG_TRUSTED_EXECUTION_SECURE=y in the application project configuration file.
Build the Non-Secure Zephyr application using -DBOARD=innblue21/nrf9160/ns.
Merge the two binaries together.

When building a Secure/Non-Secure application, the Secure application will have to set the IDAU (SPU) configuration to allow Non-Secure access to all CPU resources utilized by the Non-Secure application firmware. SPU configuration shall take place before jumping to the Non-Secure application.

Building a Secure only application

Build the Zephyr app in the usual way (see :ref:build_an_application and :ref:application_run), using -DBOARD=innblue21.

Flashing

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. Then build and flash applications as usual (see :ref:build_an_application and :ref:application_run for more details).

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

First, run your favorite terminal program to listen for output.

.. code-block:: console

$ minicom -D <tty_device> -b 115200

Replace :code:<tty_device> with the port where the nRF9160 innblue21 can be found. For example, under Linux, :code:/dev/ttyACM0.

Then build and flash the application in the usual way.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: innblue21 :goals: build flash

Debugging

Refer to the :ref:nordic_segger page to learn about debugging Nordic boards with a Segger IC.