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canssenscanssens
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Merge pull request #1 from Decathlon/feature/new-example-treadmill
Add a new example for treadmill
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‎README.md

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Display an overlay on Decathlon Training Plus website with live data from you Fitness Machine connected by Bluetooth to your browser.
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## [ftms-treadmill-web-console](ftms-treadmill-web-console/)
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Connect to a treadmill Fitness Machine by Bluetooth to your browser. Collect some values from the treadmill data in the browser console.
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# Domyos brand guidelines

‎ftms-treadmill-web-console/ftms_treadmill.html

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<html>
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<head>
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<title>Demo FTMS Treadmill Web Console</title>
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</head>
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<body>
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<h1>Web Bluetooth / FTMS BLE Treadmill</h1>
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<h2>Connection</h2>
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<button id="bleConnectionButton">Connect FTMS BLE Treadmill</button>
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<br />
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<span>Open the Web brower console to see the result.</span>
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</body>
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<script>
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const serviceFTMS = 0x1826;
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const treadmillData = 0x2acd;
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document.querySelector('#bleConnectionButton').addEventListener('click', function() {
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if (isWebBluetoothEnabled()) {
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connect();
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}
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});
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function isWebBluetoothEnabled() {
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if (navigator.bluetooth) {
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return true;
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} else {
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ChromeSamples.setStatus('Web Bluetooth API is not available.\n' +
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'Please make sure the "Experimental Web Platform features" flag is enabled.');
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return false;
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}
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}
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function connect() {
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console.log('Requesting FTMS Bluetooth Device...');
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navigator.bluetooth.requestDevice({
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filters:[{
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services: [serviceFTMS],
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}]})
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.then(device => {
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console.log('Connecting to GATT Server...');
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return device.gatt.connect();
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})
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.then(server => {
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console.log('Getting Service...');
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return server.getPrimaryService(serviceFTMS);
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})
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.then(service => {
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console.log('Getting Characteristic...');
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return service.getCharacteristic(treadmillData);
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})
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.then(characteristic => {
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var treadmillDataCharacteristic = characteristic;
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return treadmillDataCharacteristic.startNotifications().then(_ => {
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console.log('> Notifications started');
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treadmillDataCharacteristic.addEventListener('characteristicvaluechanged', handleNotifications);
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});
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})
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.catch(error => {
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console.log('Argh! ' + error);
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});
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}
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function handleNotifications(event) {
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let value = event.target.value;
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let a = [];
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// Convert raw data bytes to hex values in order to console log each notification.
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for (let i = 0; i < value.byteLength; i++)
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{
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a.push('0x' + ('00' + value.getUint8(i).toString(16)).slice(-2));
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}
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console.log('> ' + a.join(' '));
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var flags = value.getUint16(0, /*littleEndian=*/true);
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// 2octets for flags, 2octets for instant speed, nextPosition is incremented following the number of octets for each value
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var nextPosition = 4;
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if ((flags & (1 << 1)) != 0) {posAvgSpeed=nextPosition; nextPosition+=2;}
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if ((flags & (1 << 2)) != 0) {posTotDistance=nextPosition; nextPosition+=3;}//4
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if ((flags & (1 << 3)) != 0) {posInclination=nextPosition; nextPosition+=4;}//8
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if ((flags & (1 << 4)) != 0) {posElevGain=nextPosition; nextPosition+=4;}
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if ((flags & (1 << 5)) != 0) {posInsPace=nextPosition; nextPosition+=1;}
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if ((flags & (1 << 6)) != 0) {posAvgPace=nextPosition; nextPosition+=1;}
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if ((flags & (1 << 7)) != 0) {posKcal=nextPosition; nextPosition+=5;}
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if ((flags & (1 << 8)) != 0) {posHR=nextPosition; nextPosition+=1;}
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if ((flags & (1 << 9)) != 0) {posMET=nextPosition; nextPosition+=1;}
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if ((flags & (1 << 10)) != 0) {posElaspedTime=nextPosition; nextPosition+=2;}
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if ((flags & (1 << 11)) != 0) {posRemainTime=nextPosition; nextPosition+=2;}
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if ((flags & (1 << 12)) != 0) {posForceBelt=nextPosition; nextPosition+=4;}
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// instantaneous speed
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speed = value.getUint16(2, /*littleEndian=*/true)/100;
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console.log('> Speed ' + speed);
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//distance
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distance = value.getUint16(posTotDistance, /*littleEndian=*/true);
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distance_complement = value.getUint8(posTotDistance + 2, /*littleEndian=*/true);
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distance_complement = distance_complement << 16;
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distance = distance + distance_complement;
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console.log('> Distance ' + distance);
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if (typeof posInclination != "undefined")
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{
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inclination = (value.getInt16(posInclination, /*littleEndian=*/true)/10);
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console.log('> Inclinaison % ' + inclination );
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}
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if (typeof posKcal != "undefined")
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{
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kcal = (value.getUint16(posKcal, /*littleEndian=*/true));
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console.log('> Kcal ' + kcal);
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}
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if (typeof posHR != "undefined")
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{
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console.log('> HR ' + (value.getUint8(posHR, /*littleEndian=*/true)));
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}
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if (typeof posElaspedTime != "undefined")
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{
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console.log('> Elapsed time ' + (value.getUint16(posElaspedTime, /*littleEndian=*/true)));
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}
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}
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</script>
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</html>

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