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Sierra Wireless MC7710 GPS and Mikrotik
Sierra Wireless MC7710 Ports
It depends on enumeration scheme. For DIP mode with (default) USB composition #3 selected, /dev/ttyUSBn ports are expected to be mapped as follows:
n=0 - HIP (CnS);
n=1 - QCDM (diag);
n=2 - NMEA;
n=3 - AT command;
n=4 - modem.
Please note that there isn't necessarily a 1-1 relationship between the MCxxxx serial interface numbers and the Linux /dev/ttyUSBn devices. The latter number space is shared between all USB serial devices in the system, and there is no guarantee that the AT port always will be /dev/ttyUSB2 (or whatever).
Sierra Wireless use static USB interface numbers to indicate different serial functions. The correct way to map these to static device names is using udev to create symlinks based on USB device and interface number matching.
AT+CFUN=0,0
AT+CFUN=1,1
AT!RESET
ATE1
ATV1
AT+CMEE=1
AT!ENTERCND="A710"
AT!ENTERCND?
AT+GMR
AT!GPSPOSMODE?
AT!GPSPOSMODE=7f
AT!GPSPROTOSEL?
AT!CUSTOM?
AT!CUSTOM="GPSENABLE",4
OK
AT!CUSTOM="GPSENABLE",1
0 = Use dedicated GPS antenna (Default)
• 1 = Use shared GPS/Rx diversity antenna
• 2 = Use dedicated GPS antenna, with bias voltage disabled
AT!CUSTOM="GPSSEL",0
AT!CUSTOM="GPSSEL",1
AT!CUSTOM="GPSSEL",2
ERROR
AT!GPSFIX=<fixType>, <maxTime>, <maxDist>
AT!GPSFIX=1,255,4294967280
AT!GPSTRACK = <fixType>, <maxTime>, <maxDist>, <fixCount>, <fixRate>
AT!GPSTRACK=1, 255, 4294967280, 100, 1
AT!GPSTRACK=1, 255, 4294967280, 1000, 1
AT!GPSAUTOSTART=<enable>[, <fixtype>, <maxtime>, <maxdist>, <fixrate>]
AT!GPSAUTOSTART?
AT!GPSAUTOSTART=0, 1, 180, 50, 1
AT!GPSAUTOSTART=1, 1, 255, 1000, 1
AT!GPSSTATUS?
AT!GPSXTRASTATUS?
AT!GPSNMEACONFIG?
AT!GPSSATINFO?
AT!GPSLOC?
AT!GSTATUS?
AT!CUSTOM="GPSREFLOC",0
AT!CUSTOM="GPSLPM",0
# not neded
echo 1 > /sys/module/sierra/parameters/nmea
# NMEA port activity control
stty raw -F /dev/ttyUSB2
# Start NMEA
echo \$GPS_START >/dev/ttyUSB2
# stop NMEA
echo \$GPS_STOP >/dev/ttyUSB2
# send from terminal dont help
$GPS_START
6.15 nmea not start
$ Restore
AT!GPSAUTOSTART=0, 1, 180, 50, 1
AT!CUSTOM="GPSSEL",0
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