RTEMS C User's Guide
An event set or condition is built by a bitwise OR of
the desired events. The set of valid events is RTEMS_EVENT_0 through
RTEMS_EVENT_31. If an event is not explicitly specified in the set or
condition, then it is not present. Events are specifically
designed to be mutually exclusive, therefore bitwise OR and
addition operations are equivalent as long as each event appears
exactly once in the event set list.
For example, when sending the event set consisting of
RTEMS_EVENT_6, RTEMS_EVENT_15, and RTEMS_EVENT_31,
the event parameter to the rtems_event_send
directive should be RTEMS_EVENT_6 | RTEMS_EVENT_15 | RTEMS_EVENT_31.
RTEMS C User's Guide
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