How to check if HL8548 receives signals from QZSS?

IoT Modules Legacy HL Series
1

I run at+gpsconf=10,2 to enable GPS/GLONASS/SBAS/QZSS mode.
Then I run at+gpsnmea=1,,15 to get all available NMEA sentences.
Among them, I saw sentences $QZGSV,1,1,,,,,,,,,,,,,0.0*4B which seems to show that no QZSS satellites were found. However, according to the manual, QZGSV sentence is not supoprted in HL8548-G.
Despite this, does this still mean my device is not receiving the signal from QZSS?
How to know if it receives signal from QZSS?

2

Hello,

HL8548-G supported the QZSS since FW v5.5.24.0.201612281616.x6250_1.

Here is some NEMA output from HL8548G:
$GNGNS,010155.407,3537.6390,N,13944.5133,E,AN,04,3.8,109.7,39.4,6B
$GNGSA,A,3,03,08,22,4.8,3.8,3.023
$GNGSA,A,3,120,4.8,3.8,3.01B
$GPGGA,010155.407,3537.6390,N,13944.5133,E,1,04,3.8,109.7,M,39.4,M,50
$GPGLL,3537.6390,N,13944.5133,E,010155.407,A,A5B
$GPRMC,010155.407,A,3537.6390,N,13944.5133,E,0.1,334.6,280917,A6A
$GPGSA,A,3,03,08,22,3.8,32
$GPVTG,334.6,T,M,0.2,N,0.4,K,A09
$GPGSV,1,1,04,03,69,132,30,08,17,113,31,22,59,071,3145
$GLGSV,1,1,02,66,47,070,29,67,39,150,3662
$QZGSV,1,1,01,193,54,176,336E
$QZGSA,A,3,193,4.8,3.8,3.011
$GLGSA,A,3,3.8,25
$GNGNS,010156.407,3537.6390,N,13944.5133,E,AN,04,3.8,109.6,39.4,69
$GNGSA,A,3,03,08,22,4.8,3.8,3.023
$GNGSA,A,3,120,4.8,3.8,3.01B
$GPGGA,010156.407,3537.6390,N,13944.5133,E,1,04,3.8,109.6,M,39.4,M,52
$GPGLL,3537.6390,N,13944.5133,E,010156.407,A,A58
$GPRMC,010156.407,A,3537.6390,N,13944.5133,E,0.2,334.6,280917,A*6A

3

Thanks. Did you just set at+gpsconf=10,2 and it worked?

4

yes. need to set at+gpsconf=10,2` to enable GPS/GLONASS/SBAS/QZSS mode.
Make sure FW > v5.5.24.0.201612281616.x6250_1.

5

i c. I will try again.
By the way does SBAS work for you?

6

SBAS is part of the standard software provided by CSR.
SBAS should can work fine as well.
Suggest use GPS simulator to check.

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