Zephyr HxM cadence support

With the Zephyr HxM heart rate monitor, it's possible to meassure the cadence (for running only!), too. The only app that uses that data (I know of), is the SportsTrackLive running app. Support for cadence in Oruxmaps would be a really cool addition and it should be quite easy to get the data from the device. A bit tricky is, that it needs some form of calibration. And rumors are that the data is not very accurate. Well, nevertheless it would be a good addition in my opinion

Here's a snippet from the gpx file with cadence data of sportstracklive:

Code:

<gpx creator="http://sportstracklive.com" version="1.0" xmlns="http://www.topografix.com/GPX/1/1" xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd"><metadata><link href="http://sportstracklive.com">sportstracklive.com</link><category>Running</category><location>Somewhere</location><event>Training</event><tags/></metadata><trk><trkseg><trkpt lat="48.000000000" lon="7.800000000"><ele>272</ele><cadence>68</cadence><extensions><gpxtpx:TrackPointExtension><gpxtpx:hr>126</gpxtpx:hr></gpxtpx:TrackPointExtension></extensions><time>2012-04-19T15:09:55Z</time></trkpt></trkseg></trk></gpx>