Merge pull request #3068 from Mineinjava/master

Add cadence data to `recorder` app

apps/recorder/ChangeLog

@@ -38,3 +38,4 @@
 0.30: Add clock info for showing and toggling recording state
 0.31: Ensure that background-drawn tracks can get cancelled, and draw less at a time to make updates smoother
       plotTrack now draws the current track even if you're not actively recording
+0.32: Add cadence data to output files

apps/recorder/interface.html

@@ -95,17 +95,27 @@ function saveGPX(track, title) {
   <trk>
     <name>${title}</name>
     <trkseg>`;
+  let lastTime = 0;
   track.forEach(pt=>{
+    let cadence;
+    if (pt.Steps && lastTime != 0){
+      cadence = pt.Steps * 60000 / (pt.Time.getTime() - lastTime);
+      cadence = cadence / 2; /*Convert from rpm to spm (one cycle is two steps), see https://github.com/espruino/BangleApps/pull/3068#issuecomment-1790041058*/
+    }
+    lastTime = pt.Time.getTime();
+
     gpx += `
       <trkpt lat="${pt.Latitude}" lon="${pt.Longitude}">
         <ele>${pt.Altitude}</ele>
         <time>${pt.Time.toISOString()}</time>
         <extensions>
             <gpxtpx:TrackPointExtension>
-                ${pt.Heartrate ? `<gpxtpx:hr>${pt.Heartrate}</gpxtpx:hr>`:``}${""/*<gpxtpx:distance>...</gpxtpx:distance><gpxtpx:cad>65</gpxtpx:cad>*/}
+                ${pt.Heartrate ? `<gpxtpx:hr>${pt.Heartrate}</gpxtpx:hr>`:``}
+                ${cadence ? `<gpxtpx:cad>${cadence}</gpxtpx:cad>`:``} ${""/*<gpxtpx:distance>...</gpxtpx:distance><gpxtpx:cad>65</gpxtpx:cad>*/}
             </gpxtpx:TrackPointExtension>
         </extensions>
       </trkpt>`;
+
   });
   // https://www8.garmin.com/xmlschemas/TrackPointExtensionv1.xsd
   gpx += `

apps/recorder/metadata.json

@@ -2,7 +2,7 @@
   "id": "recorder",
   "name": "Recorder",
   "shortName": "Recorder",
-  "version": "0.31",
+  "version": "0.32",
   "description": "Record GPS position, heart rate and more in the background, then download to your PC.",
   "icon": "app.png",
   "tags": "tool,outdoors,gps,widget,clkinfo",