widadjust: Add application to automatically determine PPM fixup from GPS data

apps/widadjust/ChangeLog

@@ -1,3 +1,4 @@
 0.01: New widget
 0.02: Use default Bangle formatter for booleans
 0.03: Add option to hide widget
+0.04: Add auto-adjust app

apps/widadjust/app-icon.js

@@ -0,0 +1,2 @@
+require("heatshrink").decompress(atob("mEwhHXAH4A/AH4AegADDAAYLGF8QuEGAYvlFwwwCF/4vUABZf/F/4vEGA4LEF8YwFBYwA/AHB8uWIoxtGH4w/FB5fpRWQxwEE5YvXmJixKn4v/F/4v/F/4v/F8gAFK1AvGB4RpmL8oA/AH4A/AH4A/AH4AIgAlkA"))
+

apps/widadjust/metadata.json

@@ -2,15 +2,16 @@
   "id": "widadjust",
   "name": "Adjust Clock",
   "icon": "icon.png",
-  "version": "0.03",
+  "version": "0.04",
   "description": "Adjusts clock continually in the background to counter clock drift",
-  "type": "widget",
   "tags": "widget",
   "supports": [ "BANGLEJS", "BANGLEJS2" ],
   "readme": "README.md",
   "storage": [
     { "name": "widadjust.wid.js", "url": "widget.js" },
-    { "name": "widadjust.settings.js", "url": "settings.js" }
+    { "name": "widadjust.settings.js", "url": "settings.js" },
+    { "name": "widadjust.app.js","url":"widadjust.app.js"},
+    { "name": "widadjust.img","url":"app-icon.js","evaluate":true}
   ],
   "data": [
     { "name": "widadjust.json" },

apps/widadjust/widadjust.app.js

@@ -0,0 +1,208 @@
+/* Widadjust auto adjuster */
+
+/* fmt library v0.1.2 */
+let fmt = {
+    icon_alt : "\0\x08\x1a\1\x00\x00\x00\x20\x30\x78\x7C\xFE\xFF\x00\xC3\xE7\xFF\xDB\xC3\xC3\xC3\xC3\x00\x00\x00\x00\x00\x00\x00\x00",
+    icon_m : "\0\x08\x1a\1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xC3\xE7\xFF\xDB\xC3\xC3\xC3\xC3\x00\x00\x00\x00\x00\x00\x00\x00",
+    icon_km : "\0\x08\x1a\1\xC3\xC6\xCC\xD8\xF0\xD8\xCC\xC6\xC3\x00\xC3\xE7\xFF\xDB\xC3\xC3\xC3\xC3\x00\x00\x00\x00\x00\x00\x00\x00",
+    icon_kph : "\0\x08\x1a\1\xC3\xC6\xCC\xD8\xF0\xD8\xCC\xC6\xC3\x00\xC3\xE7\xFF\xDB\xC3\xC3\xC3\xC3\x00\xFF\x00\xC3\xC3\xFF\xC3\xC3",
+    icon_c : "\0\x08\x1a\1\x00\x00\x60\x90\x90\x60\x00\x7F\xFF\xC0\xC0\xC0\xC0\xC0\xFF\x7F\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
+
+  /* 0 .. DD.ddddd
+     1 .. DD MM.mmm'
+     2 .. DD MM'ss"
+   */
+    geo_mode : 1,
+    
+    init: function() {},
+    fmtDist: function(km) { return km.toFixed(1) + this.icon_km; },
+    fmtSteps: function(n) { return fmtDist(0.001 * 0.719 * n); },
+    fmtAlt: function(m) { return m.toFixed(0) + this.icon_alt; },
+    draw_dot : 1,
+    add0: function(i) {  
+      if (i > 9) {
+        return ""+i;
+      } else {
+        return "0"+i;
+      }
+    },
+    fmtTOD: function(now) {
+      this.draw_dot = !this.draw_dot;
+      let dot = ":";
+      if (!this.draw_dot)
+        dot = ".";
+      return now.getHours() + dot + this.add0(now.getMinutes());
+    },
+    fmtNow: function() { return this.fmtTOD(new Date()); },
+    fmtTimeDiff: function(d) {
+	if (d < 180)
+	    return ""+d.toFixed(0);
+	d = d/60;
+	return ""+d.toFixed(0)+"m";
+    },
+    fmtAngle: function(x) {
+	switch (this.geo_mode) {
+	case 0:
+            return "" + x;
+	case 1: {
+            let d = Math.floor(x);
+            let m = x - d;
+            m = m*60;
+            return "" + d + " " + m.toFixed(3) + "'";
+	}
+	case 2: {
+            let d = Math.floor(x);
+            let m = x - d;
+            m = m*60;
+            let mf = Math.floor(m);
+            let s = m - mf;
+            s = s*60;
+            return "" + d + " " + mf + "'" + s.toFixed(0) + '"';
+	}
+	}
+	return "bad mode?";
+    },
+    fmtPos: function(pos) {
+	let x = pos.lat;
+	let c = "N";
+	if (x<0) {
+	    c = "S";
+	    x = -x;
+	}
+	let s = c+this.fmtAngle(x) + "\n";
+	c = "E";
+	if (x<0) {
+	    c = "W";
+	    x = -x;
+	}
+	return s + c + this.fmtAngle(x);
+    },
+};
+
+/* gps library v0.1.1 */
+let gps = {
+    emulator: -1,
+    init: function(x) {
+	this.emulator = (process.env.BOARD=="EMSCRIPTEN" 
+			 || process.env.BOARD=="EMSCRIPTEN2")?1:0;
+    },
+    state: {},
+    on_gps: function(f) {
+	let fix = this.getGPSFix();
+	f(fix);
+
+	/*
+	  "lat": number,      // Latitude in degrees
+	  "lon": number,      // Longitude in degrees
+	  "alt": number,      // altitude in M
+	  "speed": number,    // Speed in kph
+	  "course": number,   // Course in degrees
+	  "time": Date,       // Current Time (or undefined if not known)
+	  "satellites": 7,    // Number of satellites
+	  "fix": 1            // NMEA Fix state - 0 is no fix
+	  "hdop": number,     // Horizontal Dilution of Precision
+	*/
+	this.state.timeout = setTimeout(this.on_gps, 1000, f);
+    },
+    off_gps: function() {
+	clearTimeout(gps_state.timeout);
+    },
+    getGPSFix: function() {
+	if (!this.emulator)
+	    return Bangle.getGPSFix();
+	let fix = {};
+	fix.fix = 1;
+	fix.lat = 50;
+	fix.lon = 14;
+	fix.alt = 200;
+	fix.speed = 5;
+	fix.course = 30;
+	fix.time = Date();
+	fix.satellites = 5;
+	fix.hdop = 12;
+	return fix;
+    },
+  gps_start : -1,
+  start_gps: function() {
+    Bangle.setGPSPower(1, "libgps");
+    this.gps_start = getTime();
+  },
+  stop_gps: function() {
+    Bangle.setGPSPower(0, "libgps");
+  },
+};
+
+var start_time = -5, start_delta;
+
+function updateTime(fix, now) {
+    let s = fmt.fmtNow() + "\n";
+    if (!fix.time)
+      return s + "???";
+
+    let delta = (now - fix.time.getTime()/1000);
+    let tdelta = "" + delta.toFixed(4);
+  
+    let is_fix = 1;
+  // = fix.fix
+  
+    if (start_time < -1) {
+      start_time ++;
+    }
+
+    if (is_fix && start_time == -1) {
+	start_time = now;
+	start_delta = delta;
+    }
+
+    if (!is_fix)
+	return s + "e " + tdelta + "s";	
+
+    let ppm = (delta - start_delta) / (now - start_time);
+    let pd = ppm * (3600*24);
+    ppm *= 1000000;
+    return s + "ppm " + ppm.toFixed(1)
+           + "\n" + pd.toFixed(1) + "s/day"
+           + "\ne " + tdelta + "s";
+}
+
+var cancel_gps = 0;
+
+function on_gps(fix) {
+  // Do this first so that we don't get extra jitter
+    let now = getTime();
+    let have = false, lat = "lat ", alt = "?",
+	speed = "speed ", hdop = "?", adelta = "adelta ",
+	tdelta = "tdelta ";
+
+    if (cancel_gps)
+	return;
+
+    let msg = "";
+    if (fix && fix.fix && fix.lat) {
+	    msg = "" + fix.speed.toFixed(1) + "km/h " +
+	          fix.alt.toFixed(0) + "m";
+	  } else {
+	    msg = "N/FIX "
+	    + (getTime() - gps.gps_start).toFixed(0) + "s"; 
+    }
+  
+    msg += "\n" + updateTime(fix, now);
+
+    g.reset().clear().setFont("Vector", 31)
+  	.setColor(1,1,1)
+	  .fillRect(0, 24, 176, 100)
+	  .setColor(0,0,0)
+	  .drawString(msg, 3, 25);
+}
+
+function stopGps() {
+  cancel_gps=true;
+  gps.stop_gps();
+}
+
+fmt.init();
+gps.init();
+gps.start_gps();
+Bangle.on('GPS', on_gps);
+
+g.reset();