Synopsis

typedef enum {
  NB_FLAG_BREAK,
  NB_FLAG_WATCHDOG,
  NB_FLAG_STEP,
  NB_FLAG_TRACE
} nb_flag_t;

The state variable nb_flags is a bitmask with each bit corresponding to one of these flags. The interpreter examines nb_flags before it starts to execute a new statement to see if any special processing is required.

NB_FLAG_BREAK

Break execution back to top level. Setting this flag causes the interpreter to exit to the top-level loop using the NB_BREAKPOINT exception. This flag can be set asynchronously to indicate to the interpreter that the user has pressed the break key.

NB_FLAG_WATCHDOG

Break execution back to top level and indicate that this is a watchdog timeout. Setting this flag causes the interpreter to exit to the top-level loop using the NB_WATCHDOG exception. This flag can be set asynchronously to indicate to the watchdog has fired when debugging the application.

NB_FLAG_STEP

Step one statement and then set the NB_FLAG_BREAK flag.

NB_FLAG_TRACE

Trace-enabled flag. Setting this flag causes the interpreter to print each statement with a before it executes it.

See Also

nb_flags