This directory contains a build configuration for building the test runner application for NXP MCXN947 (their FRDM board) with native Zephyr.
While in the port/platform/zephyr/runner_nxp directory, for example:
west build -p auto -b frdm_mcxn947/mcxn947/cpu0 . --build-dir build_frdm_mcxn947
west flash --build-dir build_frdm_mcxn947
Make sure you have followed the instructions in the zephyr port README.md to install Zephyr.
By default all of the examples and tests supported by this platform will be executed. To execute just a subset set the conditional compilation flag U_CFG_APP_FILTER to the example and/or test you wish to run. For instance, to run all of the examples you would set U_CFG_APP_FILTER=example, or to run all of the porting tests U_CFG_APP_FILTER=port, or to run a particular example U_CFG_APP_FILTER=examplexxx, where xxx is the start of the rest of the example name. In other words, the filter is a simple partial string compare with the start of the example/test name. Note that quotation marks must NOT be used around the value part.
You may set this compilation flag directly in CMakeLists.txt using e.g. target_compile_definitions(app PRIVATE U_CFG_APP_FILTER=example), or you may set the compilation flag U_CFG_OVERRIDE and provide it in the header file u_cfg_override.h (which you must create) or you may use the mechanism described in the directory above to pass the compilation flag as an environment variable without modifying any files.
If you need to change the pin assignment of a peripheral you can do this using an .overlay file which will be picked up automatically by Zephyr when they are placed in boards sub-folder.
Please see the existing overlay files in the boards directory. You will find more details on how to use .overlay files in Zephyr device tree documention.
Since NXP MCUs have many UARTs and west doesn't currently support reading traces over SWDIO, logging is through the Zephyr console UART.