Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 19 / 41
Example:
$PMTK101*32<CR><LF>
Field
Description
$
Each NMEA message starts with ‘$’
PMTK
MTK proprietary message
Packet type
101
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
3.5. Packet Type: 102 PMTK_CMD_WARM_START
This message is used to warm start the GPS module. Warm start means the GPS module has
approximate information of time, position and coarse data on satellite positions. But it needs to download
ephemeris until it can get a fix. Using this message will force the GPS warm restarted without using the
ephemeris data in NV.
Example:
$PMTK102*31<CR><LF>
Field
Description
$
Each NMEA message starts with ‘$’
PMTK
MTK proprietary message
Packet type
102
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
Quectel
Confidential