Hello, friends. Recently, LC76G module which i am using fixes very late. The setup code for GPS:
$PAIR066,1,1,1,1,1,0 * 3B
$PAIR062,0,1 * 3F
$PAIR062,4,1 * 3B
$PAIR062,1,0 * 3F
$PAIR062,2,0 * 3C
$PAIR062,3,0 * 3D
$PAIR062,5,0 * 3B
$PAIR062,6,0 * 38
$PAIR062,7,0 * 39
$PAIR062,8,0 * 36
$PAIR062,9,0 * 37
The overall process is that STM32 takes RMC and GGA data from UART, then parses. The power unit is in good condition. The checksum of commands are right. The problem is device has taken new habit of fixing GPS very late, as late as 2 hours.
How can we speed up this process? Which commands should i use?
Hi Shahin_Ahadli
- Please test in an open environment.
- Does the module take a long time to locate each time?
- What antenna do you use for the LC76G module? Is it a Quectel antenna?
- If it is not a Quectel antenna, please provide the information of the antenna you use. I need to confirm whether it is the antenna problem.
- Please try to send “$PAIR007*3D” and locate again.
- Please try to inject AGNSS data to speed up the module positioning. You can refer to the document “Quectel_L89_R2.0&LC02H&LC29H&LC79H_Series_AGNSS_Application_Note_V1.2”. I will send you the file via message.
- Try to use the QGNSS tool to re-download the firmware and try again. QGNSS download link： QGNSS_V1.10_CN | 移远通信 (quectel.com.cn)