Hi Steve, thank you very much for your help and for your explanation. I updated my tinyos and now it seems to be working. Kind regards, Andrea.
2011/5/18 steve ayer <[email protected]> > hi andrea, > > sorry it took awhile to get back to you (travel/meetings), but i sat down > to look at this and realized that you uncovered what could be considered a > bug; at the very least an oversight on my part. > > the msp430 usart uses a register that is shared among bus modes to indicate > that rx or tx event completion. the gps driver uses this bus as a uart, and > has events that fire when either the tx or rx interrupt flags is set, even > though this event is triggered by spi activities to/from the sd card. > > anyway, i added a fix to the driver that will prevent interference with the > sd driver from the gps driver, and it is now checked into the tinyos-main > repository. > > all, please pick up this fix: > > cd ~/tinyos-main/tos/platforms/shimmer2/chips/fgpmmopa6b > > svn update > > thanks for your patience, and apologies for the confusion. > > -steve > > > On 05/16/2011 12:45 PM, Andrea Grante wrote: > >> 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] <mailto:[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]> <mailto:[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. >> >> >> >> _______________________________________________ >> Shimmer-users mailing list >> [email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> <mailto:[email protected]>> >> >> https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users >> >> >> >>
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