mirror of
https://github.com/pvvx/RTL00_WEB.git
synced 2024-11-25 07:24:18 +00:00
53 lines
1.3 KiB
HTML
53 lines
1.3 KiB
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<link rel="stylesheet" href="dygraph.css">
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<title>Get data INA219</title>
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<script type="text/javascript" src="dygraph.js"></script>
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</head>
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<body>
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<h3 style="width:800px; text-align: center;">Read regs U & I INA219</h3>
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<div id="div_g" style="width:800px; height:400px;"></div>
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<script type="text/javascript">
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var data = [];
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var g = new Dygraph(
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document.getElementById("div_g"),
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data,
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{
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drawPoints: true,
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showRoller: true,
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labels: ['X', 'U', 'I']});
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var oldblkid = 0;
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var rdnextflg = false;
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var cur_idx = 0;
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ws = new WebSocket('ws://rtl871x0/web.cgi');
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ws.binaryType = 'arraybuffer';
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ws.onopen = function(){ws.send('ina219')};
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ws.onmessage = function (event) {
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if(event.data instanceof ArrayBuffer) {
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var wordarray = new Int16Array(event.data);
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if(wordarray.length > 2) {
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var blksz = wordarray[0];
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if(wordarray.length == blksz*2 + 2) {
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var blkid = wordarray[1] & 0xFFFF;
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if(rdnextflg) {
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cur_idx += (blkid - oldblkid) & 0xFFFF;
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} else rdnextflg = true;
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oldblkid = blkid + blksz;
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for (var i=2; i<wordarray.length; i+=2) {
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if(cur_idx > 2000 ) data.shift();
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data.push([cur_idx, wordarray[i], wordarray[i+1]*50]);
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cur_idx++;
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}
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g.updateOptions({'file':data});
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}
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}
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ws.send("ina219");
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}
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}
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</script>
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</body>
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</html>
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