I recently got a SIM7600G breakout board and wanted to use it with the CGPS functionality for A-GPS. It works with connecting with my SIM to the Internet and all, but when I try to use AT+CGPS=1,3 (UE-assisted mode), I receive the following in response to my setup:
OK +CGPS: 0
I interpret this as the GPS being turned off in response to this mode being selected.
I am currently interacting with the board via USB and with the "AT Command Tester For Simcom Modules", so I don't think it's a voltage issue as the other final post indicated. My current setup is as follows, all "OK" in response and no errors:
AT+CGSOCKCONT=1,"IP","APN_HERE" AT+CGPSURL="supl.google.com:7276" AT+CGPSSSL=0 AT+CGPS=? AT+CGPS? AT+CGPS=0 AT+CGPS=1,3
While mode 2 does work (UE-based), this is extremely inaccurate and defeats the purpose of my project. Has anyone ever gotten UE-assisted (A-GPS) mode to work on the SIM7600, let alone any Simcom module? If so, how did you get it to work? Is it a SUPL server issue? Firmware?
Any help would be greatly appreciated!