/* Widadjust auto adjuster */ /* fmt library v0.2.2 */ 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", icon_hpa : "\x00\x08\x16\x01\x00\x80\xb0\xc8\x88\x88\x88\x00\xf0\x88\x84\x84\x88\xf0\x80\x8c\x92\x22\x25\x19\x00\x00", icon_9 : "\x00\x08\x16\x01\x00\x00\x00\x00\x38\x44\x44\x4c\x34\x04\x04\x38\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", icon_10 : "\x00\x08\x16\x01\x00\x08\x18\x28\x08\x08\x08\x00\x00\x18\x24\x24\x24\x24\x18\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) { if (km >= 1.0) return km.toFixed(1) + this.icon_km; return (km*1000).toFixed(0) + this.icon_m; }, fmtSteps: function(n) { return this.fmtDist(0.001 * 0.719 * n); }, fmtAlt: function(m) { return m.toFixed(0) + this.icon_alt; }, fmtTemp: function(c) { return c.toFixed(1) + this.icon_c; }, fmtPress: function(p) { if (p < 900 || p > 1100) return p.toFixed(0) + this.icon_hpa; if (p < 1000) { p -= 900; return this.icon_9 + this.add0(p.toFixed(0)) + this.icon_hpa; } p -= 1000; return this.icon_10 + this.add0(p.toFixed(0)) + this.icon_hpa; }, 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); }, fmtFix: function(fix, t) { if (fix && fix.fix && fix.lat) { return this.fmtSpeed(fix.speed) + " " + this.fmtAlt(fix.alt); } else { return "N/FIX " + this.fmtTimeDiff(t); } }, fmtSpeed: function(kph) { return kph.toFixed(1) + this.icon_kph; }, radians: function(a) { return a*Math.PI/180; }, degrees: function(a) { return a*180/Math.PI; }, // distance between 2 lat and lons, in meters, Mean Earth Radius = 6371km // https://www.movable-type.co.uk/scripts/latlong.html // (Equirectangular approximation) // returns value in meters distance: function(a,b) { var x = this.radians(b.lon-a.lon) * Math.cos(this.radians((a.lat+b.lat)/2)); var y = this.radians(b.lat-a.lat); return Math.sqrt(x*x + y*y) * 6371000; }, // thanks to waypointer bearing: function(a,b) { var delta = this.radians(b.lon-a.lon); var alat = this.radians(a.lat); var blat = this.radians(b.lat); var y = Math.sin(delta) * Math.cos(blat); var x = Math.cos(alat) * Math.sin(blat) - Math.sin(alat)*Math.cos(blat)*Math.cos(delta); return Math.round(this.degrees(Math.atan2(y, x))); }, }; /* gps library v0.1.4 */ 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(this.state.timeout); }, getGPSFix: function() { if (!this.emulator) return Bangle.getGPSFix(); let fix = {}; fix.fix = 1; fix.lat = 50; fix.lon = 14-(getTime()-this.gps_start) / 1000; /* Go West! */ 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(); 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); } fmt.init(); gps.init(); gps.start_gps(); Bangle.on('GPS', on_gps); g.reset();