What do $PMTK010 and $PMTK011 command packets mean?

[Horsa]

Q: What do $PMTK010 (PMTK_SYS_MSG) and $PMTK011 command packets mean?

After the following events

• power-on
• hot restart (PMTK_CMD_HOT_START)
• warm restart (PMTK_CMD_WARM_START)
• cold restart (PMTK_CMD_COLD_START)
• full cold restart (PMTK_CMD_FULL_COLD_START)

the GlobalTop GPS modules/receivers based on the Mediatek MT3329 chip will output the following sentences as soon as the start-up process or restart process has been completed and the module/receiver is ready to process commands:

$PMTK011,MTKGPS*08<CR><LF>
$PMTK010,001*2E<CR><LF>

We recommend you not to send any command to the module/receiver before you get the sentences listed above.

If you detect only

$PMTK011,MTKGPS*08<CR><LF>

or only

$PMTK010,001*2E<CR><LF>

then it is possible that some packets has been missed.