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Frequency analyzer for MSP frames

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Pawel Spychalski (DzikuVx) 2017-01-18 19:10:29 +01:00
parent d1483e5e26
commit 2c334f6c23
3 changed files with 83 additions and 0 deletions
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77
js/eventFrequencyAnalyzer.js Normal file
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@ -0,0 +1,77 @@
'use s';
var helper = helper || {};
/**
* Simple analyzer that returns frequency of events using 5s buffer
* Usage: register periodic events with 'put', then call 'get' to get results
*/
helper.eventFrequencyAnalyzer = (function () {
var privateScope = {},
publicScope = {},
bufferPeriod = 5000;
privateScope.data = {};
privateScope.output = {};
privateScope.intervalHandler;
/**
* Periodically executed aggregation task
* @returns {{}|*}
*/
publicScope.analyze = function () {
privateScope.output = {};
for (var i in privateScope.data) {
if (privateScope.data.hasOwnProperty(i)) {
privateScope.output[i] = privateScope.data[i] / bufferPeriod * 1000;
}
}
privateScope.data = {};
return privateScope.output;
};
/**
* Return event list with frequencies
* @returns {{}|*}
*/
publicScope.get = function () {
return privateScope.output;
};
/**
* Returns raw data
* @returns {{}|*}
*/
publicScope.getRaw = function () {
return privateScope.data;
};
/**
* Put event into analyzer
* @param {object} event
*/
publicScope.put = function (event) {
if (privateScope.data[event]) {
privateScope.data[event]++;
} else {
privateScope.data[event] = 1;
}
};
/**
*
* @param {number} buffer buffer length in milliseconds
*/
publicScope.setBufferPeriod = function (buffer) {
bufferPeriod = buffer;
clearInterval(privateScope.intervalHandler);
privateScope.intervalHandler = setInterval(publicScope.analyze, bufferPeriod);
};
privateScope.intervalHandler = setInterval(publicScope.analyze, bufferPeriod);
return publicScope;
})();

5
js/msp.js
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@ -114,6 +114,11 @@ var MSP = {
bufView,
i;
/*
* For debug reasons, check how ofter MSP frames are executed
*/
helper.eventFrequencyAnalyzer.put(code);
// always reserve 6 bytes for protocol overhead !
if (data) {
var size = data.length + 6,

1
main.html
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@ -93,6 +93,7 @@
<script type="text/javascript" src="./tabs/transponder.js"></script>
<script type="text/javascript" src="./tabs/osd.js"></script>
<script type="text/javascript" src="./tabs/profiles.js"></script>
<script type="text/javascript" src="./js/eventFrequencyAnalyzer.js"></script>
<title></title>
</head>
<body>