Re: setting/reading global variables from another app

["rleong1" <rleong1@xxxxxxxxx>]

thanks John.  looks like i won't be able to use the GetMyGlobal
example because i need to have the xpl stuff compiled into the app &
not created within a vbscript like i have.  i'll be playing around w/
the telnet path.

--- In ukha_xpl@xxxxxxx, "John B" <home-automation@j...>
wrote:
> Hi,
>
> > i'm instantiating xpl inside another app running vbscript:
> >
> > 	Set xPL = WScript.CreateObject("xPL.xPLCtl")
> >
> > the app shows up in xpl hal & configures & sends
heartbeats.
> >
> > can i read and set xplhal globals from here?  what is the
> > syntax?  thanks!
>
> There are currently two ways to get a global's value from xPLHal.
>
> The first way is to use XHCP. This is how the xPLHal Manager connects
to
> xPLHal. It is a custom TCP-based protocol on port 3865.
> The protocol is similar to other Telnet-based protocols like SMTP.
> You open a connection on port 3865 and send commands to the xPLHal
> server, and it replies with the appropriate responses.
>
> E.g. try firing up a Telnet session and connecting to port 3865 on
your
> xPLHal server - below is a sample conversation of how to retrieve a
> variable called Cbus_Hall.
> (lines beginning with "C" are the bits you type in (client),
and lines
> beginning with "S" are the responses from xPLHal (server)).
>
> S: 200 XPL-XPLHAL.MERCURY (Version 1.44.1907.31912)
> C: getglobal cbus_hall
> S: 291 Global value follows
> S: 255
> S: .
> C: quit
> S: 221 Closing transmission channel - goodbye.
>
> Of course, this approach requires that you write some custom code, but
> it will give you maximum flexibility in terms of your interactions
with
> xPLHal.
> (BTW, the full protocol for communicating with xPLHal is available on
> www.xplproject.org.uk - just look for the XHCP specification)
>
> An easier approach may be to use xPL messages to communicate the value
> of a global, as follows:
>
> Write your self a simple sub routine in xPLHal, like this:
>
> Sub GetMyGlobal()
>   call
xpl.SendMsg("xpl-stat","*","sensor.basic","device=myglobal"
&
> vbLf & "type=global" & vbLf &
"current=" & sys.value("myglobal"))
> End Sub
>
> Then, from within your xPL app, just send a message to your xPLHal
> server like this:
> Xpl-cmnd
> {
> Hop=1
> Source=your_xpl_app
> Target=your_xplhal_server (cannot be *)
> }
> Control.basic
> {
> Device=GetMyGlobal
> Type=sub
> Current=execute
> }
>
> xPLHal will then run your GetMyGlobal sub, and this will then cause an
> xPL message to be sent out containing the current value of your
global,
> which your xPL app can watch for, and store.
>
> Hope that helps,
>
> Regards,
>
> John





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