L76-L not showing Galileo as used

IoT Modules GNSS Module
1

Hi,

I’m using a L76-L and trying to debug an issue while using Galileo.

If I enable multi-GNSS (say GPS,GLO,GAL), only GPS/GLO sats show up as being ‘used’, Galileo items never show as used.

To debug, I disabled all GNSSs except Galileo with $PMTK353,0,0,1,0,0, and let it run for a few hours.
It sees 8 or so satelites, but none of them are flagged as used. position and time are still being reported to the module is definantly using Galileo, but it just doesn’t report that it’s using it.

Note by ‘used’ I mean listed in $GNGSA

Firmware is:

$PMTK705,MT3333_AXN5.1.9_MODULE_STD_F1_P1,0007,Quectel-L76L,1.0*08
$PQVERNO,R,L76LNR03A01S,2020/03/02,00:49*28

Is this a known issue, is there newer firmware for the L76L available?

2

Hi Dave,

I will send you the latest L76-L firmware via message.

Please note that GNSS search mode has limitation below.
image

Best regards.

3

Thanks, One question in the release notes which state:

Supported Galileo satellites system. “GPS + GLONASS + Galileo” multi-GNSS can be enabled by PMTK command $PMTK353,1,1,1,1,0*2B.

However the GNSS Protocol Specification document states the arguments to $PMTK353 are:

<GPS_Enable>
<GLONASS_Enable>
<Galileo_Enabled>
<Res> Numeric - Always “0”.
<BDS_Enable>

Is the 4th argument no longer reserved?

4

Hi Dave,

The 4th parameter is QZSS, and it is enabled by default.

Best regards.