Re: Possible pauses with xPLHAL

[Gregg Liming <gregg@xxxxxxxxxxxxxxxxxxxx>]

Thanks Ian and Tom.  So, is devcomm acting as a "surrogate" for
receiving xPL messages for the actual device and then forwarding the
info via serial?

Gregg

Ian Lowe wrote:

>>Thanks Ian.  I hadn't noticed the hbeat.basic schema reference in
the
>>
>>
>logged messages
>
>
>>below.
>>
>>
>
>
>
>>Given the comment above about use of the additional port and
remote-ip
>>
>>
>to allow pc hubs
>
>
>>to operate, does this imply that devices that send out hbeat.basic
>>
>>
>messages cannot be
>
>
>>supported by a hub?
>>
>>
>
>Yup - that's right.
>
>The .app extension of the hbeat schema is intended to allow for hub
>operation, in a system where more than one xpl app is running in a
given
>machine.
>
>The schemas are all structured in this way - the .basic version
includes
>the simplest version of the message required, extended versions always
>include the .basic information, then a set of known extensions. It
means
>that an application which only uses the .basic version can actually
>listen for schema.* safe in the knowledge that whatever extended schema
>is being used by the device, the .basic info is all going to be there
>(and importantly, is going to be there at the top of the message body,
>in the order expected!)
>
>In practice, for this situation, this means that any PC based
>application should really be issuing hbeat.app and *not* hbeat.basic
>messages.
>
>
>
>>If not, how should the hub determine the appropriate port to
forward
>>
>>
>messages to?
>
>Exactly ;)
>
>Ian.
>
>
>xPL Links: http://www.xplproject.org.uk http://www.xplhal.com http://www.xpl.myby.co.uk
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