mirror of https://github.com/espruino/BangleApps
127 lines
3.3 KiB
JavaScript
127 lines
3.3 KiB
JavaScript
if (process.env.HWVERSION == 1) {
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Bangle.setLCDPower(1);
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Bangle.setLCDTimeout(0);
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}
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Bangle.setHRMPower(1);
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var hrmInfo = {}, hrmOffset = 0;
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var hrmInterval;
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var btm = g.getHeight()-1;
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var lastHrmPt = []; // last xy coords we draw a line to
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function onHRM(h) {
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if (counter!==undefined) {
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// the first time we're called remove
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// the countdown
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counter = undefined;
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g.clearRect(0,24,g.getWidth(),g.getHeight());
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}
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hrmInfo = h;
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/* On 2v09 and earlier firmwares the only solution for realtime
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HRM was to look at the 'raw' array that got reported. If you timed
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it right you could grab the data pretty much as soon as it was written.
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In new firmwares, '.raw' is not available. */
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if (hrmInterval) clearInterval(hrmInterval);
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hrmInterval = undefined;
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if (hrmInfo.raw) {
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hrmOffset = 0;
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setTimeout(function() {
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hrmInterval = setInterval(readHRM,41);
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}, 40);
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}
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updateHrm();
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}
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Bangle.on('HRM', onHRM);
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function updateHrm(){
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var px = g.getWidth()/2;
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g.setFontAlign(0,-1);
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g.clearRect(0,24,g.getWidth(),80);
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g.setFont("6x8").drawString(/*LANG*/"Confidence "+(hrmInfo.confidence || "--")+"%", px, 70);
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updateScale();
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g.setFontAlign(0,0);
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var str = hrmInfo.bpm || "--";
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g.setFontVector(40).setColor(hrmInfo.confidence > 50 ? g.theme.fg : "#888").drawString(str,px,45);
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px += g.stringWidth(str)/2;
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g.setFont("6x8").setColor(g.theme.fg);
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g.drawString(/*LANG*/"BPM",px+15,45);
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}
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function updateScale(){
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g.setFontAlign(-1,-1);
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g.clearRect(2,70,40,78);
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g.setFont("6x8").drawString(scale, 2, 70);
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}
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var rawMax = 0;
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var scale = 2000;
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//var MID = (g.getHeight()+80)/2;
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/* On newer (2v10) firmwares we can subscribe to get
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HRM events as they happen */
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Bangle.on('HRM-raw', function(v) {
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hrmOffset++;
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if (hrmOffset>g.getWidth()) {
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let thousands = Math.round(rawMax / 1000) * 1000;
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if (thousands > scale) scale = thousands;
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g.clearRect(0,80,g.getWidth(),g.getHeight());
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updateScale();
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hrmOffset=0;
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lastHrmPt = [-100,0];
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}
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if (rawMax < v.raw) {
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rawMax = v.raw;
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}
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let y = E.clip(btm-(8+v.filt/3000),btm-24,btm);
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g.setColor(1,0,0).fillRect(hrmOffset,btm, hrmOffset, y);
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y = E.clip(btm - (v.raw/scale*84),84,btm);
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g.setColor(g.theme.fg).drawLine(lastHrmPt[0],lastHrmPt[1],hrmOffset, y);
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lastHrmPt = [hrmOffset, y];
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if (counter !==undefined) {
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counter = undefined;
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g.clearRect(0,24,g.getWidth(),g.getHeight());
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updateHrm();
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}
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});
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// It takes 5 secs for us to get the first HRM event
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var counter = 5;
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function countDown() {
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if (counter) {
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g.drawString(counter--,g.getWidth()/2,g.getHeight()/2, true);
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setTimeout(countDown, 1000);
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}
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}
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g.clear();
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Bangle.loadWidgets();
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Bangle.drawWidgets();
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g.setColor(g.theme.fg);
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g.reset().setFont("6x8",2).setFontAlign(0,-1);
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g.drawString(/*LANG*/"Please wait...",g.getWidth()/2,g.getHeight()/2 - 16);
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countDown();
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//var wasHigh = 0, wasLow = 0;
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//var lastHigh = getTime();
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//var hrmList = [];
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var hrmInfo;
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function readHRM() {
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if (!hrmInfo) return;
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if (hrmOffset==0) {
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g.clearRect(0,100,g.getWidth(),g.getHeight());
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lastHrmPt = [-100,0];
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}
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for (var i=0;i<2;i++) {
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var a = hrmInfo.raw[hrmOffset];
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hrmOffset++;
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let y = E.clip(170 - (a*2),100,230);
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g.setColor(g.theme.fg).drawLine(lastHrmPt[0],lastHrmPt[1],hrmOffset, y);
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lastHrmPt = [hrmOffset, y];
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}
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}
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