The nRF9160 PCA10090 is a single-board development kit for evaluation and development on the nRF9160 SiP for LTE-M and NB-IoT. The nrf9160_pca10090 board provides support for the Nordic Semiconductor nRF9160 ARM Cortex-M33F CPU with ARMv8-M Security Extension and the following devices:
- Segger RTT (RTT Console)
nRF9160 DK has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 32 MHz.
The nrf9160_pca10090 board configuration supports the following hardware features:
Other hardware features are not supported by the Zephyr kernel. See nRF91 DK website  and Nordic Semiconductor Documentation library  for a complete list of nRF9160 Development Kit board hardware features.
Connections and IOs¶
- LED1 (green) = P0.2
- LED2 (green) = P0.3
- LED3 (green) = P0.4
- LED4 (green) = P0.5
Programming and Debugging¶
nrf9160_pca10090 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
CONFIG_TRUSTED_EXECUTION_SECURE=yin the the application project configuration file.
- Build the Non-Secure Zephyr application using
- 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¶
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
<tty_device> with the port where the board nRF9160 DK
can be found. For example, under Linux,
Then build and flash the application in the usual way.
# From the root of the zephyr repository west build -b nrf9160_pca10090 samples/hello_world west flash