Merge pull request #1229 from halemmerich/bthrm

BLE Heart Rate Monitor improvements

apps.json

@@ -1040,16 +1040,19 @@
     "id": "bthrm",
     "name": "Bluetooth Heart Rate Monitor",
     "shortName": "BT HRM",
-    "version": "0.01",
+    "version": "0.02",
     "description": "Overrides Bangle.js's build in heart rate monitor with an external Bluetooth one.",
     "icon": "app.png",
-    "type": "boot",
+    "type": "app",
     "tags": "health,bluetooth",
     "supports": ["BANGLEJS","BANGLEJS2"],
     "readme": "README.md",
     "storage": [
+      {"name":"bthrm.app.js","url":"bthrm.js"},
+      {"name":"bthrm.recorder.js","url":"recorder.js"},
       {"name":"bthrm.boot.js","url":"boot.js"},
-      {"name":"bthrm.img","url":"app-icon.js","evaluate":true}
+      {"name":"bthrm.img","url":"app-icon.js","evaluate":true},
+      {"name":"bthrm.settings.js","url":"settings.js"}
     ]
   },
   {

apps/bthrm/ChangeLog

@@ -1 +1,4 @@
 0.01: New App!
+0.02: Make overriding the HRM event optional
+      Emit BTHRM event for external sensor
+      Add recorder app plugin

apps/bthrm/boot.js

@@ -2,24 +2,43 @@
   var log = function() {};//print
   var gatt;
   var status;
-
-  Bangle.isHRMOn = function() {
+  
+  var origIsHRMOn = Bangle.isHRMOn;
+  
+  Bangle.isBTHRMOn = function(){
     return (status=="searching" || status=="connecting") || (gatt!==undefined);
   }
-  Bangle.setHRMPower = function(isOn, app) {
+  
+  Bangle.isHRMOn = function() {
+    var settings = require('Storage').readJSON("bthrm.json", true) || {};
+
+    print(settings);
+    if (settings.enabled && !settings.replace){
+        return origIsHRMOn();
+    } else if (settings.enabled && settings.replace){
+        return Bangle.isBTHRMOn();
+    }
+    return origIsHRMOn() || Bangle.isBTHRMOn();
+  }
+  
+  Bangle.setBTHRMPower = function(isOn, app) {
+    
+
+    var settings = require('Storage').readJSON("bthrm.json", true) || {};
+  
     // Do app power handling
     if (!app) app="?";
-    log("setHRMPower ->", isOn, app);
+    log("setBTHRMPower ->", isOn, app);
     if (Bangle._PWR===undefined) Bangle._PWR={};
-    if (Bangle._PWR.HRM===undefined) Bangle._PWR.HRM=[];
-    if (isOn && !Bangle._PWR.HRM.includes(app)) Bangle._PWR.HRM.push(app);
-    if (!isOn && Bangle._PWR.HRM.includes(app)) Bangle._PWR.HRM = Bangle._PWR.HRM.filter(a=>a!=app);
-    isOn = Bangle._PWR.HRM.length;
+    if (Bangle._PWR.BTHRM===undefined) Bangle._PWR.BTHRM=[];
+    if (isOn && !Bangle._PWR.BTHRM.includes(app)) Bangle._PWR.BTHRM.push(app);
+    if (!isOn && Bangle._PWR.BTHRM.includes(app)) Bangle._PWR.BTHRM = Bangle._PWR.BTHRM.filter(a=>a!=app);
+    isOn = Bangle._PWR.BTHRM.length;
     // so now we know if we're really on
     if (isOn) {
-      log("setHRMPower on", app);
-      if (!Bangle.isHRMOn()) {
-        log("HRM not already on");
+      log("setBTHRMPower on", app);
+      if (!Bangle.isBTHRMOn()) {
+        log("BTHRM not already on");
         status = "searching";
         NRF.requestDevice({ filters: [{ services: ['180D'] }] }).then(function(device) {
           log("Found device "+device.id);
@@ -49,7 +68,11 @@
             if (flags&16) {
               var interval = dv.getUint16(idx,1); // in milliseconds
             }*/
-            Bangle.emit('HRM',{
+            
+            
+            var eventName = settings.replace ? "HRM" : "BTHRM";
+            
+            Bangle.emit(eventName, {
               bpm:bpm,
               confidence:100
             });
@@ -65,15 +88,27 @@
         });
       }
     } else { // not on
-      log("setHRMPower off", app);
+      log("setBTHRMPower off", app);
       if (gatt) {
-        log("HRM connected - disconnecting");
+        log("BTHRM connected - disconnecting");
         status = undefined;
         try {gatt.disconnect();}catch(e) {
-          log("HRM disconnect error", e);
+          log("BTHRM disconnect error", e);
         }
         gatt = undefined;
       }
     }
   };
+  
+  var origSetHRMPower = Bangle.setHRMPower;
+    
+  Bangle.setHRMPower = function(isOn, app) {
+    var settings = require('Storage').readJSON("bthrm.json", true) || {};
+    if (settings.enabled || !isOn){
+      Bangle.setBTHRMPower(isOn, app);
+    }
+    if (settings.enabled && !settings.replace || !isOn){
+      origSetHRMPower(isOn, app);
+    }
+  }
 })();

apps/bthrm/bthrm.js

@@ -0,0 +1,61 @@
+var btm = g.getHeight()-1;
+var eventInt = null;
+var eventBt = null;
+var counterInt = 0;
+var counterBt = 0;
+
+
+function draw(y, event, type, counter) {
+  var px = g.getWidth()/2;
+  g.reset();
+  g.setFontAlign(0,0);
+  g.clearRect(0,y,g.getWidth(),y+80);
+  if (type == null || event == null || counter == 0) return;
+  var str = event.bpm + "";
+  g.setFontVector(40).drawString(str,px,y+20);
+  str = "Confidence: " + event.confidence;
+  g.setFontVector(12).drawString(str,px,y+50);
+  str = "Event: " + type;
+  g.setFontVector(12).drawString(str,px,y+60);
+}
+
+function onBtHrm(e) {
+  print("Event for BT " + JSON.stringify(e));
+  counterBt += 5;
+  eventBt = e;
+}
+
+function onHrm(e) {
+  print("Event for Int " + JSON.stringify(e));
+  counterInt += 5;
+  eventInt = e;
+}
+
+Bangle.on('BTHRM', onBtHrm);
+Bangle.on('HRM', onHrm);
+
+Bangle.setHRMPower(1,'bthrm')
+Bangle.setBTHRMPower(1,'bthrm')
+
+g.clear();
+Bangle.loadWidgets();
+Bangle.drawWidgets();
+
+g.reset().setFont("6x8",2).setFontAlign(0,0);
+g.drawString("Please wait...",g.getWidth()/2,g.getHeight()/2 - 16);
+
+function drawInt(){
+  counterInt--;
+  if (counterInt < 0) counterInt = 0;
+  if (counterInt > 5) counterInt = 5;
+  draw(24, eventInt, "HRM", counterInt);
+}
+function drawBt(){
+  counterBt--;
+  if (counterBt < 0) counterBt = 0;
+  if (counterBt > 5) counterBt = 5;
+  draw(100, eventBt, "BTHRM", counterBt);
+}
+
+var interval = setInterval(drawInt, 1000);
+var interval = setInterval(drawBt, 1000);

apps/bthrm/recorder.js

@@ -0,0 +1,27 @@
+(function(recorders) {
+  recorders.bthrm = function() {
+    var bpm = 0;
+    function onHRM(h) {
+        bpm = h.bpm;
+    }
+    return {
+      name : "BTHR",
+      fields : ["BT Heartrate"],
+      getValues : () => {
+        result = [bpm];
+        bpm = 0;
+        return result;
+      },
+      start : () => {
+        Bangle.on('BTHRM', onHRM);
+        Bangle.setBTHRMPower(1,"recorder");
+      },
+      stop : () => {
+        Bangle.removeListener('BTHRM', onHRM);
+        Bangle.setBTHRMPower(0,"recorder");
+      },
+      draw : (x,y) => g.setColor(Bangle.isBTHRMOn()?"#00f":"#88f").drawImage(atob("DAwBAAAAMMeef+f+f+P8H4DwBgAA"),x,y)
+    };
+  }
+})
+

apps/bthrm/settings.js

@@ -0,0 +1,33 @@
+(function(back) {
+  var FILE = "bthrm.json";
+  
+  var settings = Object.assign({
+    enabled: true,
+    replace: true,
+  }, require('Storage').readJSON(FILE, true) || {});
+
+  function writeSettings() {
+    require('Storage').writeJSON(FILE, settings);
+  }
+
+  E.showMenu({
+    '': { 'title': 'Bluetooth HRM' },
+    '< Back': back,
+    'Use BT HRM': {
+      value: !!settings.enabled,
+      format: v => settings.enabled ? "On" : "Off",
+      onchange: v => {
+        settings.enabled = v;
+        writeSettings();
+      }
+    },
+    'Use HRM event': {
+      value: !!settings.replace,
+      format: v => settings.replace ? "On" : "Off",
+      onchange: v => {
+        settings.replace = v;
+        writeSettings();
+      }
+    }
+  });
+})