Forerunner 910XT

Garmin Forerunner 910XT and Linux

The Forerunner 910XT as well as other newer Garmin devices is/are using the wireless ANT+ protocol together with ANT-FS to transfer files from/to a PC. Note: ANT-FS means ANT File Share (not File System).
Garmin make use of so called FIT files, which are part of ANT+. Several FIT file types exists. The ones that bother me the most right now are the so called 'Activity' and 'Course' types.
If you are a runner an Activity file basically contains your run data, i.e. distance, time, laps, heartrate, elevation, position data.
You want Course files in order to follow some track someone else has ran previously or for tracks you create yourself on some kind of digital map e.g. within Google Earth or online tools like http://www.gpsies.com or http://www.bikeroutetoaster.com/.

At this point in time you can use Garmin-Forerunner-610-Extractor hosted on github to download files from a Forerunner 910XT.

Converting fit to tcx for example can be done with Fit-to-Tcx python tool which is also available on github.

Example Usage

Garmin-Forerunner-610-Extractor_Tigge] (167)$ python garmin.py
Request basic information...
Starting system...
Open channel...
Searching...
String length:  16
Unit ID:        3843964727
Product name:   Forerunner 910
3  128  144  574  1989-12-31 01:00:00
4  128  208  680  1989-12-31 01:00:00
5  128  208  1159  1989-12-31 01:00:00
6  128  208  317  1989-12-31 01:00:00
7  128  208  1159  1989-12-31 01:00:00
8  128  208  317  1989-12-31 01:00:00
9  128  208  1197  1989-12-31 01:00:00
10  128  176  1397  2012-03-30 20:55:54
11  128  176  1164  2012-03-30 23:30:38
12  128  176  1765  2012-03-30 23:38:56
13  128  176  4052  2012-03-31 22:06:38
14  128  176  7901  2012-04-01 12:19:08
15  128  176  14638  2012-04-01 13:51:24
16  128  176  36932  2012-04-02 13:30:34
17  128  176  5702  2012-04-03 09:13:26
18  128  176  19566  2012-04-03 19:56:56
19  128  176  51949  2012-04-04 13:52:50
20  128  240  31169  2012-04-01 22:30:00
21  128  208  72  1989-12-31 01:00:00
22  128  208  627  1989-12-31 01:00:00
23  128  144  72  1989-12-31 01:00:00
24  128  144  168  1989-12-31 01:00:00
25  128  208  72  1989-12-31 01:00:00
Done downloading 3-80-1989-12-31_01-00-00-574-416.fit
Done downloading 4-80-1989-12-31_01-00-00-680-416.fit
Done downloading 5-80-1989-12-31_01-00-00-1159-416.fit
Done downloading 6-80-1989-12-31_01-00-00-317-416.fit
Done downloading 7-80-1989-12-31_01-00-00-1159-317.fit
Done downloading 8-80-1989-12-31_01-00-00-317-317.fit
Done downloading 9-80-1989-12-31_01-00-00-1197-1197.fit
Done downloading 10-80-2012-03-30_20-55-54-1397-1397.fit
Done downloading 11-80-2012-03-30_23-30-38-1164-1164.fit
Done downloading 12-80-2012-03-30_23-38-56-1765-1765.fit
Done downloading 13-80-2012-03-31_22-06-38-4052-4052.fit
Done downloading 14-80-2012-04-01_12-19-08-7901-7901.fit
Done downloading 15-80-2012-04-01_13-51-24-14638-14638.fit
Done downloading 16-80-2012-04-02_13-30-34-36932-36932.fit
Done downloading 17-80-2012-04-03_09-13-26-5702-5702.fit
Done downloading 18-80-2012-04-03_19-56-56-19566-19566.fit
Done downloading 19-80-2012-04-04_13-52-50-51949-51949.fit
Done downloading 20-80-2012-04-01_22-30-00-31169-31169.fit
Done downloading 21-80-1989-12-31_01-00-00-72-72.fit
Done downloading 22-80-1989-12-31_01-00-00-627-627.fit
Done downloading 23-80-1989-12-31_01-00-00-72-72.fit
Done downloading 24-80-1989-12-31_01-00-00-168-168.fit
Done downloading 25-80-1989-12-31_01-00-00-72-72.fit

$ python ../FIT-to-TCX/fittotcx.py 19-80-2012-04-04_13-52-50-51949-51949.fit.fit > 19-80-2012-04-04_13-52-50-51949-51949.tcx

You can use the fit file directly for uploading to Garmin Connect for example.