Dear Experts,
i working with MC60 module, i am trying to make GPS Device with MC60, then i was tried EPO with Ref location Method but it takes same time duration i don’t know how to reduce the time to get lat and long
Dear Kanannatesh
You can refer to the following documents for EPO functions
《 Quectel_MC60&MC9_GNSS_AGPS_Application_Note_V1.2》
https://www.quectel.com/support/downloadb/TechnicalDocuments.htm?keys=MC60
3.2.2.1. Detailed Operation Processes
- Configure PDP context and APN for network after power ON MC60. Currently, EPOTM function only
supports PDP context 2. - Confirm whether MC60 has registered on network successfully.
- Confirm whether time synchronization has been completed. MC60 will update local RTC time through
NITZ via GSM/GPRS network. Some network operators may not support the function, and in this
case, the time should be synchronized through NTP manually. - Enable EPOTM function via AT+QGNSSEPO=1 command.
- Power ON the GNSS part via AT+QGNSSC=1.
- Get NMEA information
AT+QIFGCNT=2 // Set PDP context
OK
AT+QICSGP=1,”CMNET”// Configure APN
OK
AT+CREG?;+CGREG? // Check network status
+CREG: 0,2
+CGREG: 0,2
OK
AT+CREG?;+CGREG? // Check network status
+CREG: 0,1
+CGREG: 0,1
OK
AT+QGNSSTS? // Read time synchronization status
+QGNSSTS: 1 // Time synchronization completed
OK
AT+QGNSSEPO=1 // Enable EPOTM function
OK
AT+QGNSSC=1 // Power ON GNSS
OK
AT+QGNSSRD?
+QGNSSRD: $GNRMC,125353.092,A,3150.8278,N,11711.9888,E,0.31,111.02,010716,A7C
$GNVTG,111.02,T,M,0.31,N,0.58,K,A2F
$GNGGA,125353.092,3150.8278,N,11711.9888,E,1,5,1.63,145.5,M,0.0,M,7A
$GPGSA,A,3,06,09,07,02,12,1.83,1.63,0.830E
$GLGSA,A,3,1.83,1.63,0.83*1B
$GPGSV,4,1,15,02,68,022,28,05,61,286,06,37,091,32,13,31,181,73
$GPGSV,4,2,15,19,25,155,29,24,318,20,18,257,12,17,243,257E
$GPGSV,4,3,15,25,13,278,09,11,039,31,07,06,081,26,15,06,205,*7A
$GPGSV,4,4,15,30,05,107,17,01,151,193,*44
$GLGSV,1,1,04,85,77,105,86,41,334,84,26,139,72,12,227,65
$GNGLL,3150.8278,N,11711.9888,E,125353.092,A,A4B
OK
Good afternoon,
I have an issue regarding EPO and time sync on my MC60E which I can’t seem to solve. I’m using +QNITZ=1 but it doesn’t seem to be syncing, ever. The GSM network should support NITZ according to their liaison with me, but in any case I’m also running QNTP, which eventually returns 0 per the documentation, but QLTS always returns empty. That and +QGNSSTS? too, until there’s a GNSS fix.
I have GSM and GPRS up and running and can connect to servers on PDP context 0; I’m using the same APN configuration for EPO’s PDP context 2.
What’s strange is that +CCLK? correctly returns local time. Obviously without time sync, I’m not using EPO at all which is less than ideal. Any ideas?