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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.

nRF9160 innblue21

Fig. 128 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 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 Building an Application and Run an Application), using -DBOARD=nrf9160_innblue21.

Flashing

Follow the instructions in the Nordic nRF5x Segger J-Link page to install and configure all the necessary software. Further information can be found in Flashing. Then build and flash applications as usual (see Building an Application and Run an Application for more details).

Here is an example for the Hello World application.

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

$ minicom -D <tty_device> -b 115200

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

Then build and flash the application in the usual way.

# From the root of the zephyr repository
west build -b nrf9160_innblue21 samples/hello_world
west flash

Debugging

Refer to the Nordic nRF5x Segger J-Link page to learn about debugging Nordic boards with a Segger IC.