GPS board - Telit SE868 V2 - TinyGPS++ - Invalid data

Aikidokajeff

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Hi,

I've just got myself a new GPS board - using the Telit SE868 v2 chipset.
I've tried several sketches and get varying results.
Using the link from the product page to TinyGPS++ I was able to download the libraries and use them to test the unit.
http://arduiniana.org/libraries/tinygpsplus/
-

I've not been able to get the example code to work - everything implies the data is either invalid or failing the checksum tests.
I've used the "Full Example" as a base.
Originally I was only getting *'s, removing the check for Valid data before printing allowed me to see a little more, but nothing useful.

Everything implies the unit isn't providing correct data - but I'm finding it hard to track it down.

Does anyone have any success working with these GPS units?

Thanks,

Jeff


Code: [Select]
FullExample.ino
An extensive example of many interesting TinyGPS++ features
Testing TinyGPS++ library v. 0.92
by Mikal Hart

Sats HDOP Latitude   Longitude   Fix  Date       Time     Date Alt    Course Speed Card  Distance Course Card  Chars Sentences Checksum
          (deg)      (deg)       Age                      Age  (m)    --- from GPS ----  ---- to London  ----  RX    RX        Fail
---------------------------------------------------------------------------------------------------------------------------------------
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   0     0         0       
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   8     0         0       
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   8     0         0       
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   8     0         0       
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   8     0         0       
Code: [Select]
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3449  0         111     
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3449  0         111     
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3449  0         111     
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3449  0         111     
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3449  0         111     
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3480  0         112     
0    0    0.000000   0.000000    -1   00/00/2000 00:00:00 -1   0.00   0.00   0.00  ***   5729     359.90 ***   3480  0         112     


Aikidokajeff

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example output (While at my desk - not out in the open - there is no improvement when out in the open.)

Code: [Select]
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GPGSV,8,1,32,01,00,000,,02,00,000,,03,00,000,,04,00,000,*75
$GPGSV,8,2,32,05,00,000,,06,00,000,,07,00,000,,08,00,000,*7E
$GPGSV,8,3,32,09,00,000,,10,00,000,,11,00,000,,12,00,000,*78
$GPGSV,8,4,32,13,00,000,,14,00,000,,15,00,000,,16,00,000,*70
$GPGSV,8,5,32,17,00,000,,18,00,000,,19,00,000,,20,00,000,*70
$GPGSV,8,6,32,21,00,000,,22,00,000,,23,00,000,,24,00,000,*72
$GPGSV,8,7,32,25,00,000,,26,00,000,,27,00,000,,28,00,000,*7B
$GPGSV,8,8,32,29,00,000,,30,00,000,,31,00,000,,32,00,000,*73
$GLGSV,1,1,,,,,,,,,,,,,0.0*4B
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GPGSV,8,1,32,01,00,000,,02,00,000,,03,00,000,,04,00,000,*75
$GPGSV,8,2,32,05,00,000,,06,00,000,,07,00,000,,08,00,000,*7E
$GPGSV,8,3,32,09,00,000,,10,00,000,,11,00,000,,12,00,000,*78
$GPGSV,8,4,32,13,00,000,,14,00,000,,15,00,000,,16,00,000,*70
$GPGSV,8,5,32,17,00,000,,18,00,000,,19,00,000,,20,00,000,*70
$GPGSV,8,6,32,21,00,000,,22,00,000,,23,00,000,,24,00,000,*72
$GPGSV,8,7,32,25,00,000,,26,00,000,,27,00,000,,28,00,000,*7B
$GPGSV,8,8,32,29,00,000,,30,00,000,,31,00,000,,32,00,000,*73
$GLGSV,1,1,,,,,,,,,,,,,0.0*4B
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00

I had a variation of this code running on my dashboard on the drive to work - only the windscreen in the way.
Nearly and hour journey and still no valid data received.


Ben Rose

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Sorry about this problem and the delay responding- You've logged raw data like the second post outside and not seen a NMEA sentence with real data within a few minutes(depending on weather)? We'll definitely replace it if that's the case, please send an email to info@tiny-circuits.com referencing this post.


 

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