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GPS AT COMMANDS SET
AT Commands for EV-DO-EV3 Modems
162
Unsolicited NMEA Data Configuration $GPSNMUN
Set command permits activation of unsolicited GPS data streaming (in NMEA format) through the NMEA port and
defines which NMEA sentences are available.
Read command returns whether the unsolicited GPS NMEA data streaming is currently enabled or not, along with
the NMEA sentences availability status, in the format:
$GPSNMUN:<enable>,<GGA>,<GLL>,<GSA>,<GSV>,<RMC>,<VTG >
Test command returns the supported range of values for <enable>, <GGA>, <GLL>, <GSA>, <GSV>, <RMC>, <VTG>.
Syntax
Command Command type
AT$GPSNMUN=<enable>[,<GGA>,<GLL>,<GSA>,<GSV>,<RMC>,<VTG >] Set
AT$GPSNMUN? Read
AT$GPSNMUN=? Test
Parameters and Values
<enable>
0 NMEA data stream deactivated. Default: 0.
1 NMEA data stream activated with the following unsolicited response syntax:
$GPSNMUN:<CR><NMEA SENTENCE><CR>.
2 NMEA data stream activated with the following unsolicited response syntax:
<NMEA SENTENCE><CR>.
3 Dedicated NMEA data stream; it is not possible to send AT commands; with the
escape sequence ‘+++’ the user can return to command mode.
<GGA> Global Positioning System fix data.
0 Disable. Default: 0.
1 Enable.
<GLL> Geographical position - latitude/longitude.
0 Disable. Default: 0.
1 Enable.
<GSA> GPS DOP and active satellites.
0 Disable. Default: 0.
1 Enable.
<GSV> GPS satellites in view.
0 Disable. Default: 0.
1 Enable.
<RMC> Recommended minimum specific GPS data.
0 Disable. Default: 0.
1 Enable.
<VTG> Course over ground and ground speed.
0 Disable. Default: 0.
1 Enable.
Example
Enables unsolicited GSA messages to be output on the NMEA port:
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