Hi Steve,
actually my JustFATLogging app breaks with just these two lines in
JustFATLoggingC:
components GpsC as GpsMod;
JustFATLoggingP.Gps -> GpsMod.Gps;
and of course adding
interface Gps;
and
async event void Gps.NMEADataAvailable(char * data) {}
in the JustFATLoggingP.
I'm not even wiring the GpsInit interface, nor I ever call its init, so my
app doesn't ever access to the GPS.
Can your application, with only such changes, write on the SD card on your
shimmer2r ?
Thanks again, kind regards,
Andrea.
2011/5/16 steve ayer <[email protected]>
> hi andrea,
>
> just adding the hooks for the gps module won't break the app, but before
> you call its init, you must disable the sd stuff, and vice-versa.
>
> -steve
>
>
> On 05/16/2011 06:06 AM, Andrea Grante wrote:
>
>> Hello Steve,
>> thank you for your help.
>> I already tried to call the init() on the GPS, then getting the data,
>> disabling it by calling either disable() or disableBus(), without success.
>> Anyway, if you just add in JustFATLoggingC
>>
>> {
>> ...
>>
>> components GpsC as GpsMod;
>> JustFATLoggingP.GpsInit -> GpsMod.Init;
>> JustFATLoggingP.Gps -> GpsMod.Gps;
>>
>> ...
>> }
>>
>>
>> and in JustFATLoggingP
>>
>> {
>> ...
>> interface Gps;
>> interface Init as GpsInit;
>> ...
>> async event void Gps.NMEADataAvailable(char * data) {}
>> ...
>> }
>>
>> the app stops working. It's enough to add those lines, without
>> enabling/initializing the GPS module.
>> When the shimmer2r is undocked, the three leds turn on, and when docked
>> back, the control of the mote is lost and nothing is written on the SD
>> card.
>> Is there something wrong in my code?
>> Thank you again, regards,
>> Andrea.
>>
>> 2011/5/12 steve ayer <[email protected] <mailto:[email protected]>>
>>
>>
>> hi andrea,
>>
>> the sd card and the gps daughter card use the same usart bus on the
>> shimmer, so to use the two together, you'll have to cache gps data
>> while the sd card is disabled, then stop receiving data from the gps
>> (though i would not disable it), bring up the sd card, write your
>> data, then switch back. bus multiplexing...
>>
>> i hope that this helps,
>>
>> steve
>>
>>
>> On 05/12/2011 09:15 AM, Andrea Grante wrote:
>>
>> Hello,
>> I'm a master student and I'm trying to write an application
>> which stores
>> data from the GPS expansion on the SD card.
>> Although I use applications which store data on the SD card
>> succesfully
>> (like JustFATLogging, for instance), I'm having problems using
>> the GPS
>> module in the same apps.
>> Even if I just list the GPS component in the configuration file
>> (not
>> even calling its init() ), SD card storage stops working.
>> How could I make the GPS and SD modules work together?
>> Thank you so much for your help, regards,
>> Andrea Grante.
>>
>>
>>
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>> <mailto:[email protected]>
>>
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>>
>>
>>
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