HL7800 GNSS Not Working

IoT Modules HL78
1

Hello,
Using a HL7802 module on a MangOH red board. I am unable to get location information from the module.

at+gnssloc=?
OK
at+gnssloc?
ERROR

If I run the following, I don’t see any NMEA messages:
at+gnssnmea=4
CONNECT

Any thoughts?

ati9
HL7800-M.4.3.9
HL78xx.4.3.9.0.RK_02_01_02_00_74.20200130
2020/01/30 17:03:22
IMEI-SV: 359416092650XXXX
Legato RTOS: 18.09.3.ALT1250.rc3 2019/11/29 14:54:47
atSwi: 25.00
UBOOT: 01.03
Apps: RKAPP_02_01_02_00_69__020c71aff64756af95a5cf48eba6659dcae12247
MAC: ALT1250_02_01_02_00_68_FW
PHY: 12.50.222182
PMP: 222211

2

Made some progress…

at+gnssconf=?
+GNSSCONF: 1,(0-1)
+GNSSCONF: 10,(0-1)
OK

at+gnssloc?
+GNSSLOC:
FIX NOT AVAILABLE
OK

Also, I thought this was strange… The first time I enter the command, it gives an error:

at+gnssloc?
ERROR
at+gnssloc?
+GNSSLOC:
FIX NOT AVAILABLE
OK

3

For anyone having this same issue… Looks like you need to disable the cellular portion with CFUN=4, then things should work.

4

Hi,

Did you manage to get a fix?
I’ve disabled the cellular subsystem with CFUN=4 like you did, but I never get fixes…

Best regards