<!DOCTYPE html>
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<html>
<head>
<title>Node Power</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" href="/favicon.png" type="image/x-icon" />
<style>
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h2 {
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h4 {
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#datetime {
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#notes {
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#iframe_a {
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</head>

<body onload="main()">

<div id="mainContainer">

<h2><a href="https://github.com/fractalxaos/ham/tree/master/nodepower" 
style="text-decoration:none" target="_new">
Node Power</a></h2>
<h4>WA7ABU Victor Point AREDN Mesh Installation</h4>

<div style="width:60%; text-align:left; font:14px arial, sans-serif;">
This web page shows the power consumption of above node(s).  Charts below
provide a historical glimpse of node power consumption, battery and ambient
temperatures.
</div>

<div id="datetime">
<text id="date"></text>
&nbsp;&nbsp;
<text id="time"></text>
</div>

<div id="alert">
<text id="alertmsg" style="opacity: 0;">
Warning: Low Battery Voltage</text>
</div>

<div class="rowContainer">

<div class="currentDataCell">
<div class="dataItems">
Current:<br>
Voltage:<br>
Power:
</div>
<div class="dataItems" style="width: 40%;">
<text id="current"></text> mA<br>
<text id="voltage"></text> V<br>
<text id="power"></text> W
</div>
</div>

<div class="currentDataCell">
<div class="dataItems">
Battery Temperature:<br>
Ambient Temperature:
</div>
<div class="dataItems"  style="width: 30%;">
<text id="battemp"></text> &#8457;<br>
<text id="ambtemp"></text> &#8457;<br>
</div>
</div>
</div>

<div class="rowContainer">
<div class="currentDataCell">
<div class="dataItems">
Charts update every
</div>
<div class="dataItems">
<text id="period"></text> minutes.<br>
</div>
</div>
<div class="currentDataCell">
<div class="dataItems">
Status:
</div>
<div class="dataItems">
<text id="status"></text><br>
</div>
</div>
</div>

<span class="chartNav">
<ul class="chartNav">
<li class="chartNav">Select charts:</li>
<li class="chartNav"><text class="chartNav" onclick="setChartPeriod(1)">
24 hours</text></li>
<li class="chartNav"><text class="chartNav" onclick="setChartPeriod(2)">
4 weeks</text></li>
<li class="chartNav"><text class="chartNav" onclick="setChartPeriod(3)">
12 months</text></li>

<li id="customSelector" class="chartNav">
<text  class="chartNav"
 onclick="setChartPeriod(0)">Custom…</text></li>

</ul>
</span>

<div class="rowContainer" id="customChartsContainer" style="display:none;">
<div class="currentDataCell">
<form id="fmDateSelector" action="power.php" method="post"
 target="iframe_a">
<label for="beginDate">Begin Date: </label>
<input id="beginDate" name="beginDate" type="date" value="mm/dd/yyyy" />
<label for="endDate">End Date: </label>
<input id="endDate" name="endDate" type="date" value="mm/dd/yyyy" />
<br><br>
<input type="button" onclick="getCustomCharts()" value="Get Charts">
</form>
<span id="errorMsg"></span><br>
<iframe id="iframe_a" name="iframe_a"></iframe>
</div>
</div>

<br>

<div class="rowContainer" id="stockChartsContainer">

<div class="chartContainer">
<img class="chart" id="current_g">
</div>

<div class="chartContainer">
<img class="chart" id="voltage_g">
</div>

<div class="chartContainer">
<img class="chart" id="power_g">
</div>

<div class="chartContainer">
<img class="chart" id="battemp_g">
</div>

<div class="chartContainer">
<img class="chart" id="ambtemp_g">
</div>

</div>

<div id="notes">
<b>NOTES:</b>
<ul>
<li>Node sensor project plans and software available at
<a href="https://github.com/fractalxaos/ham/tree/master/nodepower" target="_new">
<i>Github.com</i>
</a>.</li>
<li>Project plans include detailed instructions on how to use a Raspberry
    Pi Zero to add power bus and battery temperature monitoring 
    for your AREDN node.</li>
<li>Displayed data may be delayed by as much as 2 seconds from
 time of actual measurement.</li>
<li>Project sponsored by
 <a href=https://willamettevalleymesh.net/ TARGET="_NEW">
 <i>Willamette Valley Mesh Network</i></a>, Salem, Oregon.</li>
<li>Designed by Jeff Owrey, KA7JLO, 2021.</li>
<li> Released under Creative Commons License.</li>
</ul>
</div><br><br>
</div>

<script>
"use strict";

/* Global constants */

var SENSOR_DATA_URL = "dynamic/powerData.js";
var CRITICAL_VOLTAGE = 11.0;

/* Global DOM objects */

// Chart Elements
var current_g = document.getElementById("current_g");
var voltage_g = document.getElementById("voltage_g");
var power_g = document.getElementById("power_g");
var battemp_g = document.getElementById("battemp_g");
var ambtemp_g = document.getElementById("ambtemp_g");

// Text Elements
var date_t = document.getElementById("date");    
var time_t = document.getElementById("time");    
var current_t = document.getElementById("current");    
var voltage_t = document.getElementById("voltage");    
var power_t = document.getElementById("power");    
var battemp_t = document.getElementById("battemp");    
var ambtemp_t = document.getElementById("ambtemp");    
var status_t = document.getElementById("status");
var period_t = document.getElementById("period");
var alertmsg_t = document.getElementById("alertmsg");   

var customChartsContainer = document.getElementById("customChartsContainer");
var stockChartsContainer = document.getElementById("stockChartsContainer");
var fmDateSelector = document.getElementById("fmDateSelector");
var errorMsg = document.getElementById("errorMsg");
var customSelector = document.getElementById("customSelector");

/* Global objects */

var httpRequest = new XMLHttpRequest();

/* Global variables */

var chartPeriod = 1;
var objBlink;

function main() {

    if (location.hostname.match(/.local/g) == null) {
        customSelector.style.visibility = "hidden";
    }

    // Register call back function to process client http requests
    httpRequest.onreadystatechange = function() {
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            displayOfflineStatus();
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    httpRequest.ontimeout = function(e) {
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    initializeDateSelector();
    getSensorData();
    getSensorGraphs();
    setInterval(getSensorData, 2000);
    setInterval(getSensorGraphs, 600000);
}

function getSensorData() {
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    httpRequest.timeout = 3000;
    httpRequest.send();
}

function setChartPeriod(n) {
    chartPeriod = n;
    if (n == 0) {
        customChartsContainer.style.display = "block";
        stockChartsContainer.style.display = "none";
    } else {
        customChartsContainer.style.display = "none";
        stockChartsContainer.style.display = "block";
        getSensorGraphs();
    }
}

function getSensorGraphs() {
    var d = new Date;
    var pfx;

    switch(chartPeriod) {
        case 1:
            pfx = "24hr_";
            break;
        case 2:
            pfx = "4wk_";
            break;
       case 3:
            pfx = "12m_";
            break;
    }
    current_g.src = "dynamic/" + pfx + "current.png?ver=" + d.getTime();
    voltage_g.src = "dynamic/" + pfx + "voltage.png?ver=" + d.getTime();
    power_g.src = "dynamic/" + pfx + "power.png?ver=" + d.getTime();
    battemp_g.src = "dynamic/" + pfx + "battemp.png?ver=" + d.getTime();
    ambtemp_g.src = "dynamic/" + pfx + "ambtemp.png?ver=" + d.getTime();
}

function displayData(dataItem) {
    var voltage, current, power, ambtemp, battemp, powerWatts

    voltage = Number(dataItem.voltage);
    current = Number(dataItem.current);
    power = Number(dataItem.power)/1000.0;
    battemp = Number(dataItem.battemp);
    ambtemp = Number(dataItem.ambtemp);

    if (voltage < CRITICAL_VOLTAGE) {
        displayAlert();
    } else {
        clearAlert();
    }

    displayTime(dataItem);
    current_t.innerHTML = current.toFixed(2).toString(); 
    voltage_t.innerHTML = voltage.toFixed(2).toString();
    power_t.innerHTML = power.toFixed(2).toString();
    battemp_t.innerHTML = battemp.toFixed(2).toString();
    ambtemp_t.innerHTML = ambtemp.toFixed(2).toString();

    period_t.innerHTML = dataItem.period / 60;
    status_t.innerHTML = "online";
    status_t.style.color = "green";
}

function displayOfflineStatus() {
    displayHostTime();
    current_t.innerHTML = "";
    voltage_t.innerHTML = "";
    power_t.innerHTML = "";
    battemp_t.innerHTML = "";
    ambtemp_t.innerHTML = "";
    period_t.innerHTML = " -n/a- ";
    status_t.innerHTML = "offline";
    status_t.style.color = "red";
}

function displayAlert() {
    if (typeof objBlink == "undefined") {
    objBlink = setInterval(function() {
            alertmsg_t.style.opacity = 
                (alertmsg_t.style.opacity == 0 ? 1 : 0);
    }, 1000);
    }
}

function clearAlert() {
    clearInterval(objBlink);
    alertmsg_t.style.opacity = 0;
}

function displayTime(dataItem) {
    var date, time, hourminute;
    var localDateObj, localTimeZone, timeZoneShift;
    date = dataItem.time.split(" ")[0];
    time = dataItem.time.split(" ")[1];
    hourminute = time.split(":")[0] + ":" + time.split(":")[1];
    localDateObj = new Date();
    localTimeZone = localDateObj.getTimezoneOffset() / 60;
    if (Math.sign(localTimeZone)) {
        timeZoneShift = "-";
    } else {
        timeZoneShift = "+"
    }
    date_t.innerHTML = date;    
    time_t.innerHTML = hourminute + "  <small>(UTC" + timeZoneShift +
                       localTimeZone + ")</small>";
}

function displayHostTime() {
    var d = new Date();
    var localTimeZone, timeZoneShift;

    localTimeZone = d.getTimezoneOffset() / 60;
    if (Math.sign(localTimeZone)) {
       timeZoneShift = "-";
    } else {
       timeZoneShift = "+"
    }
    date_t.innerHTML = d.getMonth() + "/" + d.getDate() + "/" +    
        d.getFullYear();    
    time_t.innerHTML = d.getHours() + ":" + d.getMinutes() + 
        "  <small>(UTC" + timeZoneShift + localTimeZone + ")</small>";
}

function initializeDateSelector() {
    var d = new Date();

    var dEnd = new Date(d.getFullYear(),
               d.getMonth(), d.getDate() - 0);

    var dBegin = new Date(d.getFullYear(),
               d.getMonth(), d.getDate() - 1);

    document.getElementById("beginDate").valueAsDate = dBegin;
    document.getElementById("endDate").valueAsDate = dEnd;
}

function getCustomCharts() {
    fmDateSelector.submit();
}

</script>

</body>
</html>