Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 31 / 41
Speed_threshold
0~2m/s
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
3.21. Packet Type: 400 PMTK_API_Q_FIX_CTL
This message is used to query the rate of position fixing activity.
Refer to PMTK_API_SET_FIX_CTL for setting the rate.
Refer to PMTK_DT_FIX_CTL for the result of the query
Example:
$PMTK400*36<CR><LF>
Field
Description
$
Each NMEA message starts with ‘$’
PMTK
MTK proprietary message
Packet type
400
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
3.22. Packet Type: 401 PMTK_API_Q_DGPS_MODE
This message is used to query the setting of DGPS mode.
Refer to PMTK_API_SET_DGPS_MODE for setting the DGPS mode.
Refer to PMTK_DT_DGPS_MODE for the result of the query.
Example:
$PMTK401*37<CR><LF>
Quectel
Confidential