On Jun 17, 2008, at 7:16 AM, Anthony Smee wrote:

>
>
> tos-mviz -comm micaz MVizMsg
>
> I get the following (a screen does appear and disappears as quickly):
>
> [misc]$ tos-mviz -comm micaz MVizMsg
> /opt/tinyos-2.x/support/sdk/java/tinyos.jar:.:/opt/tinyos-2.x/apps/ 
> MViz:
> Making MVizMsg
> Loading link
> Loading etx
> Loading reading
> Loading count
> Loading origin
> Loading interval
> Loading version
> ./mote.gif
> Exception in thread "main" java.lang.NullPointerException
>    at net.tinyos.message.MoteIF.init(MoteIF.java:119)
>    at net.tinyos.message.MoteIF.(MoteIF.java:110)
>    at net.tinyos.mviz.MessageInput.createSource(MessageInput.java:72)
>    at net.tinyos.mviz.MessageInput.(MessageInput.java:51)
>    at net.tinyos.mviz.DDocument.main(DDocument.java:303)
>
>
> Am I missing something? If anyone else has had this working could  
> you let me know what steps you have performed? Is there any more   
> documentation? I have tried different switches with tos-mviz only to  
> see other error messages

micaz is not a valid packet source. Please read the Mote-PC  
communication tutorial.

Phil
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