Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 24 / 41
3.12. Packet Type: 622 PMTK_Q_LOCUS_DATA
This message is used to dump locus flash data.
Example:
$PMTK622,1*29<CR><LF>
Field
Description
$
Each NMEA message starts with ‘$’
PMTK
MTK proprietary message
Packet type
622
type
‘1’=dump partial in used flash data
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
3.13. Packet Type: 225 PMTK_SET_PERIODIC _MODE
This message is used to enter periodic mode for power saving.
Example:
$PMTK225,8*23<CR><LF>
Field
Description
$
Each NMEA message starts with ‘$’
PMTK
MTK proprietary message
Packet type
225
type
‘0’=Back to normal mode
‘1’=Periodic Backup mode
‘2’=Periodic Standby mode
‘4’=Perpetual Backup mode
‘8’= AlwaysLocate Standby mode
‘9’= AlwaysLocate Backup mode
Quectel
Confidential