Annotation Interface Watchdog

@Retention(RUNTIME) @Target(TYPE) public @interface Watchdog
Enables the RA4M1's hardware watchdog timer on @Watchdog's entry-point class. Juno reads this annotation directly from the class file at compile time; it carries no runtime behavior itself. When present, the generated program starts the watchdog before anything else runs and kicks it (WDT.refresh()) at every loop backedge — the same point yield() is already emitted, so no user code has to call anything. juno_panic() deliberately never kicks it (nor does anything else once a panic halts the program), so instead of hanging forever, the board reboots itself after timeoutMillis() — after printing a Serial diagnostic identifying the reboot, since that happens before interrupts are disabled.

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    int
    timeoutMillis
    Milliseconds of silence (no WDT.refresh()) before the watchdog resets the board.

  • Element Details

    • timeoutMillis

      int timeoutMillis
      Milliseconds of silence (no WDT.refresh()) before the watchdog resets the board.
      Default:
      5000