.. _nrf9160_innblue21: nRF9160 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. .. figure:: ../../../../../../../../../zephyr/boards/arm/nrf9160_innblue21/doc/img/nrf9160_innblue21.jpg :align: center :alt: nRF9160 innblue21 nRF9160 innblue21 (Credit: innblue) 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 ================== The nrf9160_innblue21 board configuration supports the following hardware (as of nRF9160) features: +-----------+------------+----------------------+ | Interface | Controller | Driver/Component | +-----------+------------+----------------------+ | CLOCK | on-chip | clock_control | +-----------+------------+----------------------+ | FLASH | on-chip | flash | +-----------+------------+----------------------+ | GPIO | on-chip | gpio | +-----------+------------+----------------------+ | I2C(M) | on-chip | i2c | +-----------+------------+----------------------+ | MPU | on-chip | arch/arm | +-----------+------------+----------------------+ | NVIC | on-chip | arch/arm | +-----------+------------+----------------------+ | PWM | on-chip | pwm | +-----------+------------+----------------------+ | RTT | Segger | console | +-----------+------------+----------------------+ | SPU | on-chip | system protection | +-----------+------------+----------------------+ | UARTE | on-chip | serial | +-----------+------------+----------------------+ | WDT | on-chip | watchdog | +-----------+------------+----------------------+ 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 ************************* nrf9160_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: 1. Build the Secure Zephyr application using ``-DBOARD=nrf9160_innblue21`` and ``CONFIG_TRUSTED_EXECUTION_SECURE=y`` in the application project configuration file. 2. Build the Non-Secure Zephyr application using ``-DBOARD=nrf9160_innblue21_ns``. 3. 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=nrf9160_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 :ref:`hello_world` application. First, run your favorite terminal program to listen for output. .. code-block:: console $ minicom -D -b 115200 Replace :code:`` 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: nrf9160_innblue21 :goals: build flash Debugging ========= Refer to the :ref:`nordic_segger` page to learn about debugging Nordic boards with a Segger IC.