.

History

.

.

THIS DOCUMENTATION WAS WRITTEN PRIOR TO BUILDING THE BT747 APPLICATION AT http://www.b747.org

.

BT747 works on multiple platforms and understands most of the MTK devices to download the log and to convert it to several formats.

.

Due to evolutions in the log formats of the loggers, this file is no longer 100% in line with all the formats on the market.
No specific effort is made to maintain this file.

.

.

If you need Professional Services or Applications involving Active or Passive Tracking using GPS Loggers, you can contact the Author of BT747.

.

.

If you edit this document, please enter a description of your edits here. Otherwise it is difficult to know what changed.

.

- Log format information change (SID logging in case of 0 satellites)

.

- Log formation information addition: information about bad sectors123

.

- New command: "$PMTK182,14,921600*30" - no idea what this is yet.123

.

- Specific Holux commands added / Holux specific log format added on log format sheet.123

.

- Change to header info description on Log format page123

.

- The checksum for $PMTK604 was wrong (from the official doc) - corrected.123

.

- PMTK704 may return extra data - description updated.123

.

- Some extra information concerning Holux log format (waypoint)123

.

- Holux specific commands clarified123

.

- bit 31 of log format identified!

.

- Initial list of PHLX commands added (used in Holux M-1000C).

.

.

.

.

.

.

Clean EPO Data
$PMTK127*36

Query AGPS ??
$PMTK607*33

.

?????

$PTSI012,2,0000*31

$PTSI012,2,%d%d%d%d*31

.

.

Some 'chip' references:

.

- MT3318

.

- Mediatek GPS Two Chip Mt3301 + Mt3179