Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Thu, 07 Apr 2005 17:57:36 -0500

Liyu, Andrei wrote:

	As I understand Application Developer's Guide 6.8 I can register
function and call it from iocsh (ioc shell).
	Ok. I build IOC (windows, epics 3.14.7, MVC++.NET) from example
template. Start it ... get
">epics"
type "asSub" or "asSub()"
and read
"command asSub not found"
What is wrong?

A registrar(function) entry in a DBD file does not automatically
register a command with the IOC shell itself, it just arranges for the
named function to be called during the IOC's startup process. The
registrar function can then perform any actions you wish to take place
at that time, including registering new iocsh commands (for which you
have to provide additional information in C code).
See the various files in the <base>/src/iocsh/ directory for examples of
the command tables and the related call to iocshRegister() that you have
to make to add a new command. We really should have an example of how
to do all this in the example template, but we don't appear to at present.
There is no fundamental reason why we can't provide a way to register
commands by just adding them to a .dbd file and have them converted into
the appropriate tables automatically, it's just that nobody has had time
to write that code yet.
- Andrew
--
Podiabombastic: The tendency to shoot oneself in the foot.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System