Nordic nRF9160-DK

/boards/arm/nrf91/nrf9160-dk

Configs

wakaama

Wakaama LwM2M demo using descriptors/examples/nrf9160dk_wakaama_lte.yaml.

Notes:

Use the nRF9160 miniboot_s secure bootloader for now, then flash this wakaama build as the non-secure modem application image.
This app still uses CONFIG_NRF91_APP_FORMAT_MCUBOOT because the nRF91 Miniboot flow reuses the MCUboot-compatible slot image format for the non-secure application.
The public Leshan IP in the config is 23.97.187.154. Refresh the leshan.eclipseprojects.io A record if that sandbox address changes.

blinky_wakaama

Sequencer-driven LED blinky controlled over LwM2M (Wakaama). Uses blinky_wakaama_demo.yaml and the shared blinky_common core. A custom LwM2M object (id 33000) exposes the LED state plus start/stop, blink-phase reset, and dwell times; an LTE system object brings up connectivity first, then the endpoint dawn-nrf9160-blinky registers with the Leshan sandbox.

Flashing

This non-secure application runs behind the miniboot_s secure bootloader. Build the bootloader and flash both images:

source .venv/bin/activate

python -m dawnpy build build_nrf9160_wakaama \
  boards/arm/nrf91/nrf9160-dk/configs/wakaama \
  -e CXX=g++-14 \
  -e CC=gcc-14

python -m dawnpy build build_miniboot_s \
  external/nuttx/boards/arm/nrf91/nrf9160-dk/configs/miniboot_s \
  -e CXX=g++-14 -e CC=gcc-14

nrfutil device recover
nrfutil device program --firmware build_miniboot_s/nuttx.hex \
    --options chip_erase_mode=ERASE_ALL
nrfutil device program --firmware build_nrf9160_wakaama/nuttx.hex \
    --options chip_erase_mode=ERASE_RANGES_TOUCHED_BY_FIRMWARE
nrfutil device reset

nrfutil device recover clears access-port protection; without it programming has no effect on a locked device.
The application is flashed with ERASE_RANGES_TOUCHED_BY_FIRMWARE to keep the bootloader intact (the nrfutil default is ERASE_ALL).