Re: PDA Ada

["Rob Veenker" <veenker@xs4all.nl>]

The radio concerned is of the PR4G family (aka FM9000) by thales. It uses a
protocol called SYCOMORE, used for remote control of the radio itself. This
protocol however also allows (limited) data communication.
On the iPAQ a SYCOMORE protocol stack written in Ada was implemented using
JGNAT.
To allow messaging, we also wrote message acknowlegdement, dispatching and
marshalling functionality (all in Ada as well). The result is a
communication 'jar' (Java archive) that is used by a Java GUI.

We are indeed using the supported version of JGNAT and are aware of the JVM
problems. The JVM's available on the iPAQ have not shown this problem
(Insignia/Jeode and NSI/CrEme).
Whether this becomes a problem is still unknown.
Also the Java standard for small devices (Personal Java) differs from the
JDK. The JVM on the iPAQ is not outdated, it's just different (sort of a
subset).

Since the protocol is implemented in Ada there are alternatives like going
native on the iPAQ using VxWorks/GNAT :-)


"Dr. Michael Paus" <paus@ib-paus.com> wrote in message
news:aoea6s$jq3$1@news.online.de...
> Rob Veenker wrote:
> > The JGNAT solution also applies to Pocket PC devices such as the iPAQ.
> > We are about to finish a military application that runs on a ruggedised
> > iPAQ. It uses a military radio for data communications and this protocol
is
> > 100 % Ada. Only the GUI part is Java.
>
> Just for curiousity. Is it possible to tell us which military radio and
> which protocol (message standard ?) you are referring to?
>
> > Because the protocol was implemented in Ada, We could use the same code
on a
> > Windows NT box :-)
>
> Well, I think the same would have been true if the protocol were
implemented
> in Java :-(
>
> Are you funding ACT for supporting JGNAT. The last I heard is that this
product
> is not supported anymore due to lack of customer interest. The current
version
> also does not run anymore on recent Java versions. So you will have to
stick
> with an outdated Java version which is probably not such a big problem for
you
> because the one delivered with the iPAQ is also quite old.
>
> Michael
>