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How to check if A-GPS is, in fact, being used? | Thales IoT Developer Community

October 16, 2015 - 6:42pm, 2891 views

Hi there,

I'm trying to get GPS to work on an EHS8 module mounted on a B80 Starter Kit.

First I tried using just GPS on standalone ****, I tested it outside and at my building helipad (23rd floor, there isn't any other building near as tall as mine). 20 minutes outside, 10 minutes on the helipad, to no avail.

Next I tried using A-GPS to get better results, and configured it using the following commands:

AT^SGPSC="Assist/Address","FQDN","supl.google.com","7276"

^SGPSC: "Assist/Address","FQDN","supl.google.com","7276"

OK

AT+CGDCONT=1,"IP","tim.br"

OK

AT^SGPSDNS=1,1

OK

AT+CGACT=1,1

OK

AT^SGPSC="Assist/Connection","1","0"

^SGPSC: "Assist/Connection"

OK

On both MSA and MSB ****s the GPS output was basically the same:

$GPGGA,,,,,,0,,,,M,,M,,*66

$GPGSA,A,1,,,,,,,,,,,,,,,*1E

$GPGSV,3,1,11,05,30,278,,07,30,113,,08,05,141,,09,26,039,*79

$GPGSV,3,2,11,11,08,101,,13,33,216,,17,39,013,,19,37,111,*74

$GPGSV,3,3,11,20,05,234,,28,73,211,,30,47,151,,,,,*42

$GPRMC,,V,,,,,,,,,,N*53

$GPVTG,,T,,M,,N,,K,N*2C

(this time i tested outside the building)

I couldn't get the fix even being connected to 3 GPS satellites.

My question is:

Is there a command to check if A-GPS is being used? Because I expected better results after doing all the A-GPS configuration.

Here's my firmware version and GPS config:

ATI1
Cinterion
EHS8
REVISION 03.001
A-REVISION 00.000.14
 
OK
 
at^sgpsc?
^SGPSC: "Engine","0"
^SGPSC: "Nmea/Output","on"
^SGPSC: "Nmea/Freq","1"
^SGPSC: "Nmea/Data","GGA,GSA,GSV,RMC,VTG"
^SGPSC: "Nmea/Interface","local"
^SGPSC: "Power/Antenna","auto"
^SGPSC: "****/Antenna","0"
^SGPSC: "Assist/Address","IPV4","64.233.186.192","7276"
^SGPSC: "Assist/Data"
^SGPSC: "Assist/Connection"
 
OK
Thanks in advance.