new 'health' app for 2v11, improved bangle2 launcher

apps.json

@@ -13,6 +13,21 @@
     ],
     "sortorder" : -10
   },
+  { "id": "health",
+    "name": "Health Tracking",
+    "tags": "tool,system,b2",
+    "icon": "app.png",
+    "version":"0.01",
+    "description": "Logs health data and provides an app to view it (BETA - requires firmware 2v11)",
+    "readme": "README.md",
+    "storage": [
+      {"name":"health.app.js","url":"app.js"},
+      {"name":"health.img","url":"app-icon.js","evaluate":true},
+      {"name":"health.boot.js","url":"boot.js"},
+      {"name":"health","url":"lib.js"}
+    ],
+    "sortorder" : -10
+  },
   { "id": "moonphase",
     "name": "Moonphase",
     "icon": "app.png",
@@ -55,7 +70,7 @@
     "name": "Launcher (Bangle.js 2)",
     "shortName":"Launcher",
     "icon": "app.png",
-    "version":"0.02",
+    "version":"0.03",
     "description": "This is needed by Bangle.js 2.0 to display a menu allowing you to choose your own applications. It will not work on Bangle.js 1.0.",
     "tags": "tool,system,launcher,b2,bno1",
     "type":"launch",
@@ -3578,7 +3593,7 @@
   "icon": "app.png",
   "version":"0.01",
   "description": "Replace Bangle.js 2's menus with a version that contains smaller text",
-  "tags": "b2,bno1",
+  "tags": "b2,bno1,system",
   "type": "boot",
   "storage": [
     {"name":"menusmall.boot.js","url":"boot.js"}

apps/health/ChangeLog

@@ -0,0 +1 @@
+0.01: New App!

apps/health/README.md

@@ -0,0 +1,38 @@
+# Health Tracking
+
+Logs health data to a file every 10 minutes, and provides an app to view it
+
+**BETA - requires firmware 2v11**
+
+## Usage
+
+Once installed, health data is logged automatically.
+
+To view data, run the `Health` app from your watch.
+
+## Features
+
+Stores:
+
+* Heart rate (TODO)
+* Step count
+* Movement
+
+## Technical Info
+
+Once installed, the `health.boot.js` hooks onto the `Bangle.health` event and
+writes data to a binary file (one per month).
+
+A library (that can be used with `require("health").readXYZ` can then be used
+to grab historical health info.
+
+## TODO
+
+* **Extend file format to include combined data for each day (to make graphs faster)**
+* `interface` page for desktop to allow data to be viewed and exported in common formats
+* More features in app:
+  * Step counting goal (ensure pedometers use this)
+  * Calendar view showing steps per day
+  * Yearly view
+  * Heart rate 'zone' graph
+  * .. other

apps/health/app-icon.js

@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("mEw4UA///8H5AYM7/5L/ACsBqtQAgMFqtABYcVqtVAgIDBqgLDAwITBDYNVrQiEAANQEQNVtWAFIYfCE4Xq0AuEAAdX1W0BZFe1XUHQgADvWrJogAE9WtBYl66ouD2oLEtQGBFwQQBBYgeBFwYjFA4QuCBYgfCFwYLCL4IICFwacCPwetEwYLCR4QJBFwbFCU4QhBFwbMDNAYuCHQQwFFwowFFwowFFwwwEFwzNGFwjxFFwowEFw7aFBQwwDFwwwEFwwwEFw4wDBRAwBFxAwCFxAwCFxIA/AB4A="))

apps/health/app.js

@@ -0,0 +1,60 @@
+function menuMain() {
+  E.showMenu({
+    "":{title:"Health Tracking"},
+    "< Back":()=>load(),
+    "Step Counting":()=>menuStepCount(),
+    "Movement":()=>menuMovement()
+  });
+}
+
+function menuStepCount() {
+  E.showMenu({
+    "":{title:"Step Counting"},
+    "per hour":()=>stepsPerHour()
+  });
+}
+
+function menuMovement() {
+  E.showMenu({
+    "":{title:"Movement"},
+    "per hour":()=>movementPerHour()
+  });
+}
+
+function stepsPerHour() {
+  E.showMessage("Loading...");
+  var data = new Uint16Array(24);
+  require("health").readDay(new Date(), h=>data[h.hr]+=h.steps);
+  g.clear(1);
+  Bangle.drawWidgets();
+  g.reset();
+  require("graph").drawBar(g, data, {
+    y:24,
+    miny: 0,
+    axes : true,
+    gridx : 6,
+    gridy : 500
+  });
+  Bangle.setUI("updown", ()=>menuStepCount());
+}
+
+function movementPerHour() {
+  E.showMessage("Loading...");
+  var data = new Uint16Array(24);
+  require("health").readDay(new Date(), h=>data[h.hr]+=h.movement);
+  g.clear(1);
+  Bangle.drawWidgets();
+  g.reset();
+  require("graph").drawLine(g, data, {
+    y:24,
+    miny: 0,
+    axes : true,
+    gridx : 6,
+    ylabel : null
+  });
+  Bangle.setUI("updown", ()=>menuStepCount());
+}
+
+Bangle.loadWidgets();
+Bangle.drawWidgets();
+menuMain();

apps/health/boot.js

@@ -0,0 +1,38 @@
+Bangle.on("health", health => {
+  // ensure we write health info for *last* block
+  var d = new Date(Date.now() - 590000);
+
+  const DB_RECORD_LEN = 4;
+  const DB_RECORDS_PER_HR = 6;
+  const DB_RECORDS_PER_DAY = DB_RECORDS_PER_HR*24;
+  const DB_RECORDS_PER_MONTH = DB_RECORDS_PER_DAY*31;
+  const DB_HEADER_LEN = 8;
+  const DB_FILE_LEN = DB_HEADER_LEN + DB_RECORDS_PER_MONTH*DB_RECORD_LEN;
+
+  function getRecordFN(d) {
+    return "health-"+d.getFullYear()+"-"+d.getMonth()+".raw";
+  }
+  function getRecordIdx(d) {
+    return (DB_RECORDS_PER_DAY*(d.getDate()-1)) +
+           (DB_RECORDS_PER_HR*d.getHours()) +
+           (0|(d.getMinutes()*DB_RECORDS_PER_HR/60));
+  }
+
+  var rec = getRecordIdx(d);
+  var fn = getRecordFN(d);
+  var f = require("Storage").read(fn);
+  if (f) {
+    var dt = f.substr(DB_HEADER_LEN+(rec*DB_RECORD_LEN), DB_RECORD_LEN);
+    if (dt!="\xFF\xFF\xFF\xFF") {
+      print("HEALTH ERR: Already written!");
+      return;
+    }
+  } else {
+    require("Storage").write(fn, "HEALTH1\0", 0, DB_FILE_LEN); // header
+  }
+  var recordData = String.fromCharCode(
+    health.steps>>8,health.steps&255, // 16 bit steps
+    health.bpm, // 8 bit bpm
+    Math.min(health.movement / 8, 255)); // movement
+  require("Storage").write(fn, recordData, DB_HEADER_LEN+(rec*DB_RECORD_LEN), DB_FILE_LEN);
+});

apps/health/lib.js

@@ -0,0 +1,61 @@
+const DB_RECORD_LEN = 4;
+const DB_RECORDS_PER_HR = 6;
+const DB_RECORDS_PER_DAY = DB_RECORDS_PER_HR*24;
+const DB_RECORDS_PER_MONTH = DB_RECORDS_PER_DAY*31;
+const DB_HEADER_LEN = 8;
+const DB_FILE_LEN = DB_HEADER_LEN + DB_RECORDS_PER_MONTH*DB_RECORD_LEN;
+
+function getRecordFN(d) {
+  return "health-"+d.getFullYear()+"-"+d.getMonth()+".raw";
+}
+function getRecordIdx(d) {
+  return (DB_RECORDS_PER_DAY*(d.getDate()-1)) +
+         (DB_RECORDS_PER_HR*d.getHours()) +
+         (0|(d.getMinutes()*DB_RECORDS_PER_HR/60));
+}
+
+// Read all records from the given month
+exports.readAllRecords = function(d, cb) {
+  var rec = getRecordIdx(d);
+  var fn = getRecordFN(d);
+  var f = require("Storage").read(fn);
+  var idx = DB_HEADER_LEN;
+  for (var day=0;day<31;day++) {
+    for (var hr=0;hr<24;hr++) {
+      for (var m=0;m<DB_RECORDS_PER_HR;m++) {
+        var h = f.substr(idx, DB_RECORD_LEN);
+        if (h!="\xFF\xFF\xFF\xFF") {
+          cb({
+            day:day+1, hr : hr, min:m*10,
+            steps : (h.charCodeAt(0)<<8) | h.charCodeAt(1),
+            bpm : h.charCodeAt(2),
+            movement : h.charCodeAt(3)
+          });
+        }
+        idx += 4;
+      }
+    }
+  }
+}
+
+// Read all records from the given month
+exports.readDay = function(d, cb) {
+  var rec = getRecordIdx(d);
+  var fn = getRecordFN(d);
+  var f = require("Storage").read(fn);
+  var idx = DB_HEADER_LEN + (DB_RECORD_LEN*DB_RECORDS_PER_DAY*(d.getDate()-1));
+  for (var hr=0;hr<24;hr++) {
+    for (var m=0;m<DB_RECORDS_PER_HR;m++) {
+      var h = f.substr(idx, DB_RECORD_LEN);
+      if (h!="\xFF\xFF\xFF\xFF") {
+        cb({
+          hr : hr, min:m*10,
+          steps : (h.charCodeAt(0)<<8) | h.charCodeAt(1),
+          bpm : h.charCodeAt(2),
+          movement : h.charCodeAt(3)
+        });
+      }
+      idx += 4;
+    }
+  }
+}

apps/launchb2/ChangeLog

@@ -1,2 +1,3 @@
 0.01: New App!
 0.02: Fix occasional missed image when scrolling up
+0.03: Text wrapping, better font

apps/launchb2/app.js

@@ -14,17 +14,23 @@ var w = g.getWidth();
 var h = g.getHeight();
 var n = Math.ceil((h-24)/APPH);
 var menuScrollMax = APPH*apps.length - (h-24);
+// FIXME: not needed after 2v11
+var font = g.getFonts().includes("12x20") ? "12x20" : "6x8:2";
 
 apps.forEach(app=>{
   if (app.icon)
     app.icon = s.read(app.icon); // should just be a link to a memory area
 });
+if (g.wrapString) { // FIXME: check not needed after 2v11
+  g.setFont(font);
+  apps.forEach(app=>app.name = g.wrapString(app.name, g.getWidth()-64).join("\n"));
+}
 
 function drawApp(i) {
   var y = 24+i*APPH-menuScroll;
   var app = apps[i];
   if (!app || y<-APPH || y>=g.getHeight()) return;
-  g.setFont("6x8",2).setFontAlign(-1,0).drawString(app.name,64,y+32);
+  g.setFont(font).setFontAlign(-1,0).drawString(app.name,64,y+32);
   if (app.icon) try {g.drawImage(app.icon,8,y+8);} catch(e){}
 }