2017-06-21 00:00:20 +00:00
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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 ADC</title>
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<script type="text/javascript" src="dygraph.min.js"></script>
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</head>
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<body>
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<h3 style="width:800px; text-align: center;">Read ADC RTL8711AM</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(document.getElementById("div_g"), data,
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{ drawPoints: true, showRoller: true, labels: ['X', 'U']});
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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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2017-06-21 00:10:45 +00:00
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ws.onopen = function(){ws.send('adc');ws.send('adc')};
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2017-06-21 00:00:20 +00:00
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ws.onmessage = function (event) {
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if(event.data instanceof ArrayBuffer) {
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var wordarray = new Uint16Array(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) {
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var blkid = wordarray[1];
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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++) {
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if(cur_idx > 1000 ) data.shift();
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data.push([cur_idx++, wordarray[i]]);
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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("adc");
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}
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}
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</script>
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</body></html>
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