Currently, this repository holds a simple proof-of-concept example consisting of a base (firmware) and an app that can be built using a CMake script similar to the one used in InfiniTime for the nRF52840-DK (PCA10056) board.
It can be built using the very same docker file provided by InfiniTime (see their documentation) by issueing the command docker run --rm -it -v $(pwd):/sources infinitime-build in the project root directory.
Alternatively, it should be possible to build the app on the local system if ARM_NONE_EABI_TOOLCHAIN_PATH and NRF5_SDK_PATH are set in the environment with CMake (adapting the commands used in ./docker/build.sh).
The resulting bin, obj, hex and map files can be found in ./build/src/{base,app}/dynamic_code-{base,app}.hex and flashed using nrfjprog by using nrfjprog -f NRF52 --program build/src/base/dynamic_code-base.hex --sectorerase --verify --reset followed by nrfjprog -f NRF52 --program build/src/app/dynamic_code-app.hex --sectorerase --verify --reset.
The nrfjprog tool can be installed following the guide at https://infocenter.nordicsemi.com/topic/ug_nrf_cltools/UG/cltools/nrf_installation.html (Segger JLink needs to be installed as well).
The current content of the internal FLASH memory can be read using /opt/nrf-command-line-tools/bin/nrfjprog --readcode flash.hex.
Hex files can be analyzed using a tool available online and the Wikipedia page explaining the syntax.