mirror of https://github.com/espruino/BangleApps
263 lines
9.3 KiB
JavaScript
263 lines
9.3 KiB
JavaScript
var device;
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var gatt;
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var service;
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var characteristic;
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const SETTINGS_FILE = 'cscsensor.json';
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const storage = require('Storage');
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const W = g.getWidth();
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const H = g.getHeight();
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class CSCSensor {
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constructor() {
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this.movingTime = 0;
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this.lastTime = 0;
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this.lastBangleTime = Date.now();
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this.lastRevs = -1;
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this.settings = storage.readJSON(SETTINGS_FILE, 1) || {};
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this.settings.totaldist = this.settings.totaldist || 0;
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this.totaldist = this.settings.totaldist;
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this.wheelCirc = (this.settings.wheelcirc || 2230)/25.4;
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this.speedFailed = 0;
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this.speed = 0;
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this.maxSpeed = 0;
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this.lastSpeed = 0;
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this.qUpdateScreen = true;
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this.lastRevsStart = -1;
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this.qMetric = !require("locale").speed(1).toString().endsWith("mph");
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this.speedUnit = this.qMetric ? "km/h" : "mph";
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this.distUnit = this.qMetric ? "km" : "mi";
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this.distFactor = this.qMetric ? 1.609344 : 1;
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this.screenInit = true;
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this.batteryLevel = -1;
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this.lastCrankTime = 0;
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this.lastCrankRevs = 0;
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this.showCadence = false;
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this.cadence = 0;
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}
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reset() {
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this.settings.totaldist = this.totaldist;
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storage.writeJSON(SETTINGS_FILE, this.settings);
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this.maxSpeed = 0;
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this.movingTime = 0;
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this.lastRevsStart = this.lastRevs;
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this.maxSpeed = 0;
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this.screenInit = true;
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}
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toggleDisplayCadence() {
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this.showCadence = !this.showCadence;
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this.screenInit = true;
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}
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setBatteryLevel(level) {
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if (level!=this.batteryLevel) {
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this.batteryLevel = level;
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this.drawBatteryIcon();
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}
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}
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updateBatteryLevel(event) {
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if (event.target.uuid == "0x2a19") this.setBatteryLevel(event.target.value.getUint8(0));
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}
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drawBatteryIcon() {
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g.setColor(1, 1, 1).drawRect(10, 55, 20, 75).fillRect(14, 53, 16, 55).setColor(0).fillRect(11, 56, 19, 74);
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if (this.batteryLevel!=-1) {
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if (this.batteryLevel<25) g.setColor(1, 0, 0);
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else if (this.batteryLevel<50) g.setColor(1, 0.5, 0);
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else g.setColor(0, 1, 0);
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g.fillRect(11, 74-18*this.batteryLevel/100, 19, 74);
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}
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else g.setFontVector(14).setFontAlign(0, 0, 0).setColor(0xffff).drawString("?", 16, 66);
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}
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updateScreenRevs() {
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var dist = this.distFactor*(this.lastRevs-this.lastRevsStart)*this.wheelCirc/63360.0;
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var ddist = Math.round(100*dist)/100;
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var tdist = Math.round(this.distFactor*this.totaldist*10)/10;
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var dspeed = Math.round(10*this.distFactor*this.speed)/10;
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var dmins = Math.floor(this.movingTime/60).toString();
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if (dmins.length<2) dmins = "0"+dmins;
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var dsecs = (Math.floor(this.movingTime) % 60).toString();
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if (dsecs.length<2) dsecs = "0"+dsecs;
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var avespeed = (this.movingTime>3 ? Math.round(10*dist/(this.movingTime/3600))/10 : 0);
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var maxspeed = Math.round(10*this.distFactor*this.maxSpeed)/10;
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if (this.screenInit) {
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for (var i=0; i<6; ++i) {
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if ((i&1)==0) g.setColor(0, 0, 0);
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else g.setColor(0x30cd);
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g.fillRect(0, 48+i*32, 86, 48+(i+1)*32);
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if ((i&1)==1) g.setColor(0);
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else g.setColor(0x30cd);
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g.fillRect(87, 48+i*32, 239, 48+(i+1)*32);
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g.setColor(0.5, 0.5, 0.5).drawRect(87, 48+i*32, 239, 48+(i+1)*32).drawLine(0, 239, 239, 239);//.drawRect(0, 48, 87, 239);
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g.moveTo(0, 80).lineTo(30, 80).lineTo(30, 48).lineTo(87, 48).lineTo(87, 239).lineTo(0, 239).lineTo(0, 80);
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}
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g.setFontAlign(1, 0, 0).setFontVector(19).setColor(1, 1, 0);
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g.drawString("Time:", 87, 66);
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g.drawString("Speed:", 87, 98);
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g.drawString("Ave spd:", 87, 130);
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g.drawString("Max spd:", 87, 162);
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g.drawString("Trip:", 87, 194);
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g.drawString("Total:", 87, 226);
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this.drawBatteryIcon();
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this.screenInit = false;
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}
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g.setFontAlign(-1, 0, 0).setFontVector(26);
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g.setColor(0x30cd).fillRect(88, 49, 238, 79);
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g.setColor(0xffff).drawString(dmins+":"+dsecs, 92, 66);
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g.setColor(0).fillRect(88, 81, 238, 111);
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g.setColor(0xffff).drawString(dspeed+" "+this.speedUnit, 92, 98);
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g.setColor(0x30cd).fillRect(88, 113, 238, 143);
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g.setColor(0xffff).drawString(avespeed + " " + this.speedUnit, 92, 130);
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g.setColor(0).fillRect(88, 145, 238, 175);
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g.setColor(0xffff).drawString(maxspeed + " " + this.speedUnit, 92, 162);
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g.setColor(0x30cd).fillRect(88, 177, 238, 207);
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g.setColor(0xffff).drawString(ddist + " " + this.distUnit, 92, 194);
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g.setColor(0).fillRect(88, 209, 238, 238);
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g.setColor(0xffff).drawString(tdist + " " + this.distUnit, 92, 226);
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}
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updateScreenCadence() {
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if (this.screenInit) {
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for (var i=0; i<2; ++i) {
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if ((i&1)==0) g.setColor(0, 0, 0);
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else g.setColor(0x30cd);
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g.fillRect(0, 48+i*32, 86, 48+(i+1)*32);
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if ((i&1)==1) g.setColor(0);
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else g.setColor(0x30cd);
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g.fillRect(87, 48+i*32, 239, 48+(i+1)*32);
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g.setColor(0.5, 0.5, 0.5).drawRect(87, 48+i*32, 239, 48+(i+1)*32).drawLine(0, 239, 239, 239);//.drawRect(0, 48, 87, 239);
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g.moveTo(0, 80).lineTo(30, 80).lineTo(30, 48).lineTo(87, 48).lineTo(87, 239).lineTo(0, 239).lineTo(0, 80);
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}
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g.setFontAlign(1, 0, 0).setFontVector(19).setColor(1, 1, 0);
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g.drawString("Cadence:", 87, 98);
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this.drawBatteryIcon();
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this.screenInit = false;
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}
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g.setFontAlign(-1, 0, 0).setFontVector(26);
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g.setColor(0).fillRect(88, 81, 238, 111);
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g.setColor(0xffff).drawString(Math.round(this.cadence), 92, 98);
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}
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updateScreen() {
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if (!this.showCadence) {
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this.updateScreenRevs();
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} else {
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this.updateScreenCadence();
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}
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}
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updateSensor(event) {
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var qChanged = false;
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if (event.target.uuid == "0x2a5b") {
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if (event.target.value.getUint8(0, true) & 0x2) {
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// crank revolution - if enabled
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const crankRevs = event.target.value.getUint16(1, true);
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const crankTime = event.target.value.getUint16(3, true);
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if (crankTime > this.lastCrankTime) {
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this.cadence = (crankRevs-this.lastCrankRevs)/(crankTime-this.lastCrankTime)*(60*1024);
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qChanged = true;
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}
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this.lastCrankRevs = crankRevs;
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this.lastCrankTime = crankTime;
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}
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// wheel revolution
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var wheelRevs = event.target.value.getUint32(1, true);
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var dRevs = (this.lastRevs>0 ? wheelRevs-this.lastRevs : 0);
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if (dRevs>0) {
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qChanged = true;
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this.totaldist += dRevs*this.wheelCirc/63360.0;
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if ((this.totaldist-this.settings.totaldist)>0.1) {
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this.settings.totaldist = this.totaldist;
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storage.writeJSON(SETTINGS_FILE, this.settings);
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}
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}
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this.lastRevs = wheelRevs;
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if (this.lastRevsStart<0) this.lastRevsStart = wheelRevs;
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var wheelTime = event.target.value.getUint16(5, true);
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var dT = (wheelTime-this.lastTime)/1024;
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var dBT = (Date.now()-this.lastBangleTime)/1000;
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this.lastBangleTime = Date.now();
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if (dT<0) dT+=64;
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if (Math.abs(dT-dBT)>3) dT = dBT;
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this.lastTime = wheelTime;
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this.speed = this.lastSpeed;
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if (dRevs>0 && dT>0) {
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this.speed = (dRevs*this.wheelCirc/63360.0)*3600/dT;
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this.speedFailed = 0;
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this.movingTime += dT;
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}
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else {
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this.speedFailed++;
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qChanged = false;
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if (this.speedFailed>3) {
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this.speed = 0;
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qChanged = (this.lastSpeed>0);
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}
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}
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this.lastSpeed = this.speed;
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if (this.speed>this.maxSpeed && (this.movingTime>3 || this.speed<20) && this.speed<50) this.maxSpeed = this.speed;
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}
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if (qChanged && this.qUpdateScreen) this.updateScreen();
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}
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}
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var mySensor = new CSCSensor();
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function getSensorBatteryLevel(gatt) {
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gatt.getPrimaryService("180f").then(function(s) {
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return s.getCharacteristic("2a19");
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}).then(function(c) {
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c.on('characteristicvaluechanged', (event)=>mySensor.updateBatteryLevel(event));
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return c.startNotifications();
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});
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}
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function connection_setup() {
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mySensor.screenInit = true;
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E.showMessage("Scanning for CSC sensor...");
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NRF.requestDevice({ filters: [{services:["1816"]}]}).then(function(d) {
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device = d;
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E.showMessage("Found device");
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return device.gatt.connect();
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}).then(function(ga) {
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gatt = ga;
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E.showMessage("Connected");
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return gatt.getPrimaryService("1816");
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}).then(function(s) {
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service = s;
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return service.getCharacteristic("2a5b");
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}).then(function(c) {
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characteristic = c;
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characteristic.on('characteristicvaluechanged', (event)=>mySensor.updateSensor(event));
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return characteristic.startNotifications();
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}).then(function() {
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console.log("Done!");
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g.reset().clearRect(Bangle.appRect).flip();
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getSensorBatteryLevel(gatt);
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mySensor.updateScreen();
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}).catch(function(e) {
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E.showMessage(e.toString(), "ERROR");
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console.log(e);
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});
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}
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connection_setup();
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E.on('kill',()=>{
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if (gatt!=undefined) gatt.disconnect();
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mySensor.settings.totaldist = mySensor.totaldist;
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storage.writeJSON(SETTINGS_FILE, mySensor.settings);
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});
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NRF.on('disconnect', connection_setup); // restart if disconnected
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Bangle.setUI("updown", d=>{
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if (d<0) { mySensor.reset(); g.clearRect(0, 48, W, H); mySensor.updateScreen(); }
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if (d==0) { if (Date.now()-mySensor.lastBangleTime>10000) connection_setup(); }
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if (d>0) { mySensor.toggleDisplayCadence(); g.clearRect(0, 48, W, H); mySensor.updateScreen(); }
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});
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Bangle.loadWidgets();
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Bangle.drawWidgets();
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