|
|
Introduction
|
|
|
|
The MPI EventMgr is responsible for the collection and distribution
of host notifications of firmware events. An application often
needs to be notified of events that take place on the motion
controller. Events include normal motion completion, motion
limits being reached, hardware failure, etc. The EventNotify
methods enable your application to request host notification
of certain types of events, while ignoring other types of
events. Some events are latched, in which case your application
must reset the event before the event can be triggered again.
|
| Method |
Description |
| mpiObjectEventNotifyGet(...) |
Get event
mask used for host notification |
| mpiObjectEventNotifySet(...) |
Set event mask to request host
notification of events |
| mpiObjectEventNotifyReset(...)
|
Reset event notification |
|
| |
|
mpiObjectEventNotifyGet(...)
|
|
Use EventNotifyGet to return an MPIEventMask, which has a
bit set for each type of event that host notification has
been requested for, by the object.
|
|
|
|
mpiObjectEventNotifySet(...)
|
|
Use EventNotifySet to request host notification for each
type of event specified in the MPIEventMask argument.
|
|
|
| |
|
mpiObjectEventNotifyReset(...)
|
|
Use EventNotifyReset to reset each type of event specified
in the MPIEventMask argument.
|
| |
|
Notification Process
|
|
Events [that are requested by mpiObjectEventNotifySet(...)]
move up through the firmware to the EventMgr.
|
|
|
| To collect events, the EventMgr either polls the firmware
(using mpiEventMgrService(...)) or is interrupted by the firmware.
The EventMgr passes each event to its list of Notify objects,
who further qualify events based on the event type and the source
of the event, and generate signals and otherwise notify the
host application of event occurrences. |
|
|
| |
|
|
|
