Thank you for your help Felix et Stephen, it works great now.
De : address@hidden [mailto:address@hidden De la part de Felix Ruess
Envoyé : jeudi 6 septembre 2012 22:37
À : address@hidden
Objet : Re: [Paparazzi-devel] HELP telemetry message with long and lat
thx for pointing out that there is an error in the GPS_LLA message.
Was added once for debugging and not really used since...
Regarding zeros in the messages, what gps subsystem are you using and if it is a ublox, how is your GPS configured?
As Stephen pointed out, the ublox GPS needs to be configured to send the UBX_NAV_POSLLH message if you want lat/lon.
Also the state interface won't help here....
On Thu, Sep 6, 2012 at 10:06 PM, Stephen Dwyer <address@hidden> wrote:
I *think* that unless the GPS is sending the correct message (LLH
Position message, check ublox manual), then the LLH data is not
updated beyond the initialization value of 0. So you would probably
have to add some code or modify the gps configuration to send that
messsage. The new state interface in master branch might make this
much easier (haven't looked at the code yet).
Is there a particular reason you need to send lat-long, as opposed to
UTM data, which can easily be converted afterwards?
Sorry I couldn't be of more help (and I might be wrong).
On Thu, Sep 6, 2012 at 1:47 PM, Cedric Marzer <address@hidden> wrote:
> So nobody had a clue that would help me ?
> Le 5 sept. 2012 à 23:18, Cedric Marzer a écrit :
>> Hi all,
>> I have been trying to downlink the gps longitude and latitude but without success so far (for fixed wing).
>> I have been trying to use the gps_lla and the gps_int messages but the longitude and latitude I get are all zeros.
>> (btw there is a bug in the ap_downlink.h for the gps_lla message with a line copied twice that needs to be removed).
>> I have been trying to add USE_GPS in the airframe file but that didn't help…
>> Do you have any idea how to have that working ?
>> Thanks in advance.
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