Quectel MC65 GPS fail(empty response)

Question

I am using Quectel's MC65 to get location info.

Here is my at command process:

1-AT+QGNSSC=1\r

2-AT+QGNSSRD=\"NMEA/RMC\"\r"

The GNSS powers up correctly but I only get +QGNSSRD: OK in response!

Answer 1

It turned out I had connected the GNSS and AUX communication ports wrong. It should be

GNSS_RX--->AUX_TX

and

GNSS_TX--->AUX_RX(I am using ALL_IN_ONE mode).

It's sort of common sense and it's a bad mistake but this might help someone debug his/her system.