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[gpsd-dev] Adding additional parameters to gps_data_t structure

From: Sharmila
Subject: [gpsd-dev] Adding additional parameters to gps_data_t structure
Date: Tue, 2 Jul 2019 21:00:29 +0530
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1


I am using gpsd deamon for fetching the GPS data from ublox module. I have added velN (
North velocity component) , velE (East velocity component) and height (Height above ellipsoid) parameter in gps_data_t fix structure.  After adding the above mentioned parameters and increased the debug level I got the below prints from driver.

client(0): {"class":"TPV","device":"/dev/ttyLP2","mode":3,"time":"2019-07-02T12:35:46.000Z","ept":0.005,"lat":12.913449783,"lon":77.614389008,"alt":489.587,"epx":28.145,"epy":28.145,"epv":50.055,"track":237.2497,"speed":1.427,"climb":0.146,"eps":0.71,"velN":0.04,"velE":-0.07,"height":403.02,"epc":100.43}\x0d\x0a

But the data doesn't seem to be transfer or handled in application as expected since I am getting unexpected values in the application.

It would be great if you could provide some suggestion on solving the above mentioned issue.

Also as a part of debugging process we tried to enable libgps_debug_trace() , but I am not able to get the prints from libgps_sock.c and libgps_core.c file. Kindly help us to enable the libgps_debug_trace().

Thanks & Regards,


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