Created
August 7, 2018 03:03
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<!DOCTYPE html> | |
<html lang="ja"> | |
<head> | |
<meta charset="UTF-8"> | |
</head> | |
<body> | |
<p id="wait"><strong>じゅんびちゅう...</strong></p> | |
<p>心拍数:<span id="rate">?</span></p> | |
<script type="text/javascript"> | |
"use strict"; | |
// ミリ秒を取得する | |
var getMilis = function() { | |
return new Date().getTime(); | |
} | |
// 心拍数を計算する(心拍合計/経過秒*60を小数点切り捨て) | |
var getHeartRate = function() { | |
let milis = getMilis() - initTime; | |
let rate = (beat / (milis / 1000.0)) * 60.0; | |
console.log(rate); | |
document.getElementById('rate').innerHTML = Math.floor(rate); | |
}; | |
// 起動時のタイムスタンプ | |
var initTime = getMilis(); | |
// 心拍合計 | |
var beat = 0; | |
// 繰り返し処理 | |
var interval = null; | |
// キー値 | |
var key = '****'; | |
// データをもらうためのWeb接続先 | |
var ws = new WebSocket('wss://us.wio.seeed.io/v1/node/event'); | |
// Webに接続するための処理 | |
ws.onopen = function() { | |
ws.send(key); | |
document.getElementById('wait').style.display = 'none'; | |
}; | |
// Webからデータを取得できたときの処理 | |
ws.onmessage = function(evt) { | |
var json = JSON.parse(evt.data); | |
if (json.msg.input_rise) { | |
beat = beat + 1; | |
if (!interval) { | |
interval = setInterval(getHeartRate, 5000); | |
} | |
} | |
}; | |
</script> | |
</body> | |
</html> |
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