RE: [Embedlets-dev] A use scenario and I/O device tagging

[James C. <ca...@vi...>]

> The only way that I can see this happening is if the servo card were
>tagged with information that described what it is.

This is a standard WebServices task.. Ping the WebService to find out
what services it supports.

I like your vision on the application :-)

Going away for the weekend for a little R&R but back into it next week!

Cheers all,

James Caska
www.muvium.com
uVM - 'Java Bred for Embedded'



-----Original Message-----
From: emb...@li...
[mailto:emb...@li...] On Behalf Of
Ted Kosan
Sent: Friday, 27 June 2003 7:56 AM
To: emb...@li...
Subject: [Embedlets-dev] A use scenario and I/O device tagging


Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
_______________________________________________

Here is the use scenario I would like to eventually achieve for the
assembly of the controller for the CNC Plasma Cutter that I am building:


1) Turn on a PC and launch the Graphic Wiring Tool.

2) Instantiate a new Embedlet Container.

3) Drag a CNCController Embedlet from the Embedlet Pallet and drop it
into the container.  The CNCControllerEmbedlet has been pre-designed to
use a JAPLServoController interface to talk to the servo I/O device that
it will be controlling.

4) Plug a JSIMM backplane into a serial port on the PC (The SLIP/UART
scheme really shines here!).

5) Plug a muvium-based 3 Axis industrial servo/stepper controller JSIMM
card into the JSIMM backplane and the JAPLServoController interface that
represents this servo card should *automatically* appear inside of the
wiring tool.  The only way that I can see this happening is if the servo
card were tagged with information that described what it is.

(Systronix has been working on tag-enabling their products and I think
that we will need to figure out a way to come up with a universal device
tagging scheme which can be used to associate any I/O hardware with the
JAPL interface that represents it).

6) Drag the JAPLServoController component (that 'magically' appeared)
onto the CNCControllerEmbedlet component in order to bind them.

7)  Configure the CNCControllerEmbedlet by right-clicking on it and
giving it information like the size and resolution of the X, Y and Z
axis, maximum axis traverse rate, etc.

8)  Power up the servo drives in order to test and adjust the system's
configuration on a *live* system.

9)  After everything is working as desired, have the wiring tool package
the application and then deploy it to a TStik.

10)  Disconnect the JSIMM backplane from the PC and then plug the TStik
into the backplane.  When the TStik powers up, its Embedlet based
application should automatically re-bind the JAPL interfaces it contains
with the physical I/O devices that are plugged into the backplane.


So far there does not appear to be any fundamental reason why a
use-scenario like this cannot be realized and we seem to be doing a
fairly good job of coming up with the step-by-step subsolutions needed
to solve the overall problem.

Ted

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