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Re: [Paparazzi-devel] Adding NMEA to the gps type

From: Todd Sandercock
Subject: Re: [Paparazzi-devel] Adding NMEA to the gps type
Date: Tue, 12 Apr 2011 18:12:43 -0700 (PDT)

Sweet. That shall be very handy soon.

I am having a little trouble understanding how the compiling is working these days. If a subsystem is put into a firmware block does the compiler look for a makefile called "subsystem name"_"subsystem type".makefile in the folder "firmware name"??

I am interested in this because it would be nice to be able to run my own guidance_v code without modifying the existing files. I have noticed that guidance is not a subsystem at the moment though so that might make it a little more difficult.


From: Andre Devitt <address@hidden>
To: address@hidden
Sent: Tue, 12 April, 2011 11:22:32 PM
Subject: Re: [Paparazzi-devel] Adding NMEA to the gps type

Hi Todd-
  I hope to send a pull req for this later this afternoon. If you
want to try it out soon you can download the files
sw/airborne/gps_nmea.c and .h, as well as

Beyond that you just need to edit conf/autopilot/fixedwing.xml and
change the GPS line to read <subsystem name="gps"        
types="ublox_lea4p|lea5h|nmea"> to allow the selection of nmea as a
gps type.

IIRC the code has a configuration string that is hardcoded (will
change before pull request) that configures an MTK GPS to have a fix
rate of 5Hz, as the default on the modules I've used is 1Hz. Should be
harmless in the case of a different GPS.


On Mon, Apr 11, 2011 at 3:20 PM, Felix Ruess <address@hidden> wrote:
> Hi Todd,
> Andre wants to integrate his revised NMEA code soon. In the dev branch
> fixedwing and rotorcraft gps is merged and has a cleaner interface.
> Until that is merged back into the master branch you can just create a
> gps_nmea.makefile containing the nmea code (just like the
> gps_ublox_lea5h.makefile) and use that subsystem.
> Cheers, Felix
> On Sun, Apr 3, 2011 at 2:52 AM, Todd Sandercock
> <address@hidden> wrote:
>> Hi all
>> Is there any way to add NMEA to the GPS type in the airframe file?? there
>> seems to be enough completed in the NMEA parser to be useful. I want to test
>> the NMEA code with some ground software so it doesn't need to be flight
>> critical yet.
>> Todd
>> _______________________________________________
>> Paparazzi-devel mailing list
>> address@hidden
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden

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