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hello_world

Minimal nsx application. Initialises the runtime core and prints a message to SWO in a loop.

This is the recommended starting point for new users — it validates that your toolchain, board connection, and SWO viewer are all working.

It is also a multi-target example: a single lean nsx.yml declares a targets: block supporting both apollo510_evb (default) and apollo4p_blue_kxr_evb. Each board resolves its own derived <board>_minimal profile; both are recorded in one combined nsx.lock, so this serves as the simplest cross-family proving ground (Apollo5 + Apollo4P).

Build & Run

# Default board (apollo510_evb)
nsx configure --app-dir .
nsx build     --app-dir .
nsx flash     --app-dir .      # requires JLink + EVB
nsx view      --app-dir .      # opens SWO viewer

# Apollo4P Blue KXR EVB
nsx build     --app-dir . --board apollo4p_blue_kxr_evb

Expected Output

The SWO viewer will print once per second:

Hello from nsx!
Hello from nsx!
Hello from nsx!
...

Messages repeat once per second. If you see nothing, check:

  1. Board is powered and connected via SWD (JLink)
  2. nsx flash completed without errors
  3. SWO pin is not remapped — the default EVB configuration works out of the box