[Tinyos-help] Re: MTS420 drivers problem with tinydb

[Samuel Madden]

Abishek --

To the best of my knowledge, the MTS420 has never worked with the  
mica2's and TinyDB.  The behavior you see (large gaps between epochs,  
lots of readings with NULLs) is consistent with TinyDB timing out on  
calls to getAttr which never return a value.

-Sam


On Jun 6, 2006, at 5:35 AM, Abhishek wrote:

> Hi ,
>
> Is there any guy out there who is successful in getting the results  
> from this experimental setup:
>
> MTS420 sensor with MPR400 (mica2 mote).
> The mote is programmed with /opt/tinyos-1.x/apps/TinyDBApp .
>
> On the PC side , we are viewing the results in TinyDB GUI  using  
> the following command
>
> java net.tinyos.tinydb.TinyDBMain
>
> When we fire the query for nodeid , it is showing correct values.
> But, when we fire the query for viewing pressure, humidity etc ,  
> what we see is NULL values in the TinyDB GUI, and in fact , epoch  
> values are coming with some gap , like 10, 27, 40, 57 .....and so on.
>
>
> After this , we made the following changes:
> In makefile , we change the sensorboards value to micawb instead of  
> micasb.
>
> In AttrPressure.nc,AttrPressureM.nc AttrHumidity.nc and  
> AttrHumidityM.nc , we changed  the #defines to include  
> InterSemaPressure and SensirionHumidity components in the TinyDB
>
>
>
> Thanks for reading the mail.
>
> Please provide any type of help regarding the issue.
>
> Abhishek.................!
>
>
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