Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Mon, 26 Jan 2015 12:52:56 -0600

On 01/26/2015 12:34 PM, Emmanuel Mayssat wrote:
> Are you saying that an EPICS database can be populated with data coming
> from another control system?

That is possible but not what was meant by this feature.

> Or are you saying that asyn can be used to interface with hardware in
> any other control system?
> In this latter case, why even depend on libCom from the EPICS base then?

The code in Asyn that implements EPICS device support and knows how to
talk the IOC can be disabled from the build, allowing you to build and
use Asyn within other control systems instead. You would have to write
equivalent interface code to the devEpics layer for that alternative
control system though.

Asyn makes use of libCom and the EPICS build system to provide it with
OS-independent APIs for things like threads, mutexes and semaphores,
system time, network sockets, message queues, ring buffers etc. If it
didn't rely on libCom for these it would have to implement its own
versions of most of the code in base/src/libCom/osi and some facilities
from the other libCom source directories as well.

- Andrew
-- 
Doctorow's Law: Anytime someone puts a lock on something you own,
    against your wishes, and doesn't give you the key, they're
    not doing it for your benefit.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System