How to enable A-GPS function with WP7607 correctly


#1

Hi guys,

I have one mangOH red with WP7607 and want to enable A-GPS function.

I check document “4118047_WPx5xx-76xx-77xx AT Command Reference_r6” chap 8 GNSS Commands

and find some at commands to configure and query GPS feature.

I use AT!GPSAUTOSTART=1,2,240,50,30 to configure GPS auto-start features and connects to LTE network.

After waiting some time, I use the following at commands to query GPS status.

AT!GPSAUTOSTART?

enable: 1

fixtype: 2

maxtime: 240 seconds

maxdist: 50 meters

fixrate: 30 seconds

AT!GPSSATINFO?

Satellites in view: 9 (1980 01 06 6 00:00:00)

  • SV:201 ELEV: 0 AZI: 0 SNR: 37

  • SV:202 ELEV: 0 AZI: 0 SNR: 38

  • SV:203 ELEV: 0 AZI: 0 SNR: 38

  • SV:205 ELEV: 0 AZI: 0 SNR: 37

  • SV: 33 ELEV: 0 AZI: 0 SNR: 34

  • SV: 40 ELEV: 0 AZI: 0 SNR: 34

  • SV: 41 ELEV: 0 AZI: 0 SNR: 34

  • SV: 49 ELEV: 0 AZI: 0 SNR: 34

  • SV: 50 ELEV: 0 AZI: 0 SNR: 34

AT!GPSLOC?

Not Available

AT!GPSSTATUS?

Current time: 2019 03 07 3 06:41:17

1980 01 06 6 00:00:00 Last Fix Status = FAIL, FAILCODE = 0

2019 03 07 3 06:38:13 Fix Session Status = ACTIVE

No TTFF available

The result looks like A-GPS doesn’t work yet.

Do I miss some steps when I enable A-GPS function?

Does anyone help me?

Thanks!