I thought I’d revisit this to see if anyone might help me with developing a plugin.
I expect this would operate like a thermostat (for pit temperature) and three temperature sensors (for food probes). I’d want to be able to write temperature setpoints to the device, and read back current temperature for the pit and individual temperatures for the three probes. The temperature setpoints for the food probes only serve to turn on an audible alarm in the controller; there’s no real control of temperature occurring for those setpoints.
The way this web interface works is simple - update temperature setpoints in the interface and press “Submit Values.” There’s an existing iPhone application (PitPal, discussed above) but it comes with a lot of overhead. I’d like just to be able to plug in the device and set the temperatures, without having to set up a whole cook profile each time. Besides, adding the information to Vera has other benefits. I could flash the lights when the food temperature is reached, for example.
A bonus, I suppose, would be the ability to name the probes… but that’s only interesting to me if I can then read them in HomeWave.
Attached to this post is a screen shot of the web interface to the temperature controller.
This is the page source:
<html>
<head>
<style type="text/css">
*
{
font-family: Arial;
}
body
{
background-color: #FFFFFF;
}
table
{
border-collapse: collapse;
}
table, th, td
{
border: 1px solid black;
}
th
{
background-color: #CCCCCC;
}
td
{
padding: 5px;
}
.top table, .top th, .top td
{
border: 0px;
}
.noborder table, .noborder th, .noborder td
{
border: 0px;
}
<!-- statusClassX are the classes used when displaying statusValToStr[] . statusClass0 is statusValToStr[0], etc.
-->
.statusClass0
{
color: inherit;
<!-- OK -->
}
.statusClass1
{
color: magenta;
<!-- HIGH -->
}
.statusClass2
{
color: blue;
<!-- LOW -->
}
.statusClass3
{
color: magenta;
<!-- DONE -->
}
.statusClass4
{
color: orange;
<!-- ERROR -->
}
.statusClass5
{
color: blue;
<!-- HOLD -->
}
.statusClass6
{
color: red;
<!-- ALARM -->
}
.statusClass7
{
color: red;
<!-- SHUTDOWN -->
}
</style>
<script type="text/javascript">
var ajaxGet;
var t;
var waiting = 0;
var tValid = 0;
var ios6workaround = 0;
function initForm()
{
document.mainForm.COOK_NAME.value = "Big Green Egg";
document.mainForm.FOOD1_NAME.value = "Spare Ribs";
document.mainForm.FOOD2_NAME.value = "Salmon";
document.mainForm.FOOD3_NAME.value = "Food3";
document.mainForm._COOK_SET.value = TempPICToHTML(2400, 0);
document.mainForm._FOOD1_SET.value = TempPICToHTML(1600, 0);
document.mainForm._FOOD2_SET.value = TempPICToHTML(1800, 0);
document.mainForm._FOOD3_SET.value = TempPICToHTML(1800, 0);
}
function setStartTime()
{
tValid = 1;
t = setTimeout('ajax()', 1000);
}
function initScript()
{
initForm();
setStartTime();
}
function ajax()
{
if (waiting)
{
waiting--;
}
if (!waiting)
{
ajaxGet=GetXmlHttpObject();
if (ajaxGet==null)
{
alert ("Your browser does not support AJAX!");
return;
}
waiting = 10; //wait 10 seconds for a response
ajaxGet.open("POST", "status.xml", true);
ajaxGet.onreadystatechange = stateChanged;
ajaxGet.send("IGNOREDTAG="+ios6workaround);
if (++ios6workaround > 255)
ios6workaround = 0;
}
setStartTime();
}
function CookTimerEntryValid()
{
var ret = 0;
var input = document.mainForm._COOK_TIMER.value;
var regex = /^\d{2}:\d{2}:\d{2}$/;
if (input.search(regex) != -1)
{
ret = 1;
}
return ret;
}
function FormAppendHidden(theForm, elementName, elementValue)
{
//var newElement = document.createElement("<input name='"+elementName+"' type='hidden'>");
var newElement = document.createElement('input');
newElement.setAttribute('name', elementName);
newElement.setAttribute('type', 'hidden');
theForm.appendChild(newElement);
newElement.value = elementValue;
}
function submitForm()
{
document.mainForm.COOK_SET.value = TempHTMLToPIC(document.mainForm._COOK_SET.value);
document.mainForm.FOOD1_SET.value = TempHTMLToPIC(document.mainForm._FOOD1_SET.value);
document.mainForm.FOOD2_SET.value = TempHTMLToPIC(document.mainForm._FOOD2_SET.value);
document.mainForm.FOOD3_SET.value = TempHTMLToPIC(document.mainForm._FOOD3_SET.value);
//TODO: convert _COOK_TIMER to COOK_TIMER if valid
if (CookTimerEntryValid())
{
FormAppendHidden(document.mainForm, "COOK_TIMER", document.mainForm._COOK_TIMER.value);
}
document.mainForm.submit();
}
function GetElementAttributeValue(xmlDoc, element, attribute)
{
var n;
var i;
n = xmlDoc.getElementsByTagName(element)[0].attributes.length;
for (i=0; i<n; i++)
{
if (xmlDoc.getElementsByTagName(element)[0].attributes[i].name == attribute)
{
return xmlDoc.getElementsByTagName(element)[0].attributes[i].value;
}
}
return "";
}
function GetElementNodeValue(xmlDoc, element)
{
return xmlDoc.getElementsByTagName(element)[0].childNodes[0].nodeValue;
}
var displayInF=1;
function TempHTMLToPIC(temp)
{
if (!displayInF)
{
temp *= 9;
temp /= 5;
temp += 32;
}
return(Math.round(temp));
}
function TempPICToHTML(temp, agnostic)
{
if (!displayInF && !agnostic)
{
temp -= 320;
temp *= 5;
temp /= 9;
}
temp /= 10;
return Math.round(temp);
}
function DegUnitsChar()
{
var unit;
if (!displayInF)
{
unit = 'C';
}
else
{
unit = 'F';
}
return unit;
}
var xmlDirectReplace =
[
"TIMER_CURR"
];
// needs to go in same order as xmlStatusReplace (except timer_status can be ignored)
var xmlTempReplace =
[
"COOK_TEMP",
"FOOD1_TEMP",
"FOOD2_TEMP",
"FOOD3_TEMP"
]
var xmlStatusReplace =
[
"COOK_STATUS",
"FOOD1_STATUS",
"FOOD2_STATUS",
"FOOD3_STATUS",
"TIMER_STATUS"
];
// see cook_status_t in PIC source
var statusValToStr =
[
"OK",
"HIGH",
"LOW",
"DONE",
"ERROR",
"HOLD",
"ALARM",
"SHUTDOWN"
];
function UpdateExistingValues(xmlDoc)
{
var i;
if (xmlDoc.getElementsByTagName("OUTPUT_PERCENT")[0] != null)
{
document.getElementById("OUTPUT_PERCENT").innerHTML = GetElementNodeValue(xmlDoc, "OUTPUT_PERCENT") + " %";
}
for (i=0; i<xmlDirectReplace.length; i++)
{
var id = xmlDirectReplace[i];
if (xmlDoc.getElementsByTagName(id)[0] != null)
{
if (document.getElementById(id).innerHTML != GetElementNodeValue(xmlDoc, id))
{
document.getElementById(id).innerHTML = GetElementNodeValue(xmlDoc, id);
}
}
}
for (i=0; i<xmlTempReplace.length; i++)
{
var id = xmlTempReplace[i];
if (GetElementNodeValue(xmlDoc, xmlStatusReplace[i]) != 4)
{
if (xmlDoc.getElementsByTagName(id)[0] != null)
{
document.getElementById(id).innerHTML = TempPICToHTML(GetElementNodeValue(xmlDoc, id), 0) + " " + DegUnitsChar();
//document.getElementById(id).setAttribute("class", "statusClass0");
//document.getElementById(id).setAttribute("className", "statusClass0");
}
}
else
{
document.getElementById(id).innerHTML = "OPEN";
//document.getElementById(id).setAttribute("class", "statusClass4");
//document.getElementById(id).setAttribute("className", "statusClass4");
}
}
for (i=0; i<xmlStatusReplace.length; i++)
{
var idStatus = xmlStatusReplace[i];
var idTemp = xmlTempReplace[i];
if ((xmlDoc.getElementsByTagName(idStatus)[0] != null) && (xmlDoc.getElementsByTagName(idTemp)[0] != null))
{
document.getElementById(idStatus).innerHTML = statusValToStr[GetElementNodeValue(xmlDoc, idStatus)];
// change class to statusClass0, statusClass1, etc
document.getElementById(idStatus).setAttribute("class", "statusClass"+GetElementNodeValue(xmlDoc, idStatus));
document.getElementById(idStatus).setAttribute("className", "statusClass"+GetElementNodeValue(xmlDoc, idStatus));
document.getElementById(idTemp).setAttribute("class", "statusClass"+GetElementNodeValue(xmlDoc, idStatus));
document.getElementById(idTemp).setAttribute("className", "statusClass"+GetElementNodeValue(xmlDoc, idStatus));
}
}
}
function stateChanged()
{
if (ajaxGet.readyState==4)
{
UpdateExistingValues(ajaxGet.responseXML.documentElement);
waiting = 0;
}
}
function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
return new XMLHttpRequest();
}
if (window.ActiveXObject)
{
// code for IE6, IE5
return new ActiveXObject("Microsoft.XMLHTTP");
}
return null;
}
</script>
<title>CyberQ Temperature Controller - Control Status</title>
</head>
<body onload="initScript('');">
<H2>Control Status</H2>
<form name="mainForm" method="POST">
<input type="hidden" name="EEAUTOFLUSH" value="0">
<!--javascript will provide values to this on submit-->
<input type="hidden" name="COOK_SET" value="0">
<input type="hidden" name="FOOD1_SET" value="0">
<input type="hidden" name="FOOD2_SET" value="0">
<input type="hidden" name="FOOD3_SET" value="0">
<P>
<TABLE WIDTH=600>
<TR>
<TH width=40%>SENSOR</TH>
<TH width=20%>ACTUAL</TH>
<TH width=20%>SETPOINT</TH>
<TH width=20%>STATUS</TH>
</TR>
<TR>
<TD><input type="text" maxlength=31 name="COOK_NAME"></TD>
<TD id="COOK_TEMP"> </TD>
<TD><input type="text" maxlength=3 size=4 name="_COOK_SET"> <script>document.write(DegUnitsChar())</script></TD>
<TD id="COOK_STATUS"> </TD>
</TR>
<TR>
<TD><input type="text" maxlength=31 name="FOOD1_NAME"></TD>
<TD id="FOOD1_TEMP"> </TD>
<TD><input type="text" maxlength=3 size=4 name="_FOOD1_SET"> <script>document.write(DegUnitsChar())</script></TD>
<TD id="FOOD1_STATUS"> </TD>
</TR>
<TR>
<TD><input type="text" maxlength=31 name="FOOD2_NAME"></TD>
<TD id="FOOD2_TEMP"> </TD>
<TD><input type="text" maxlength=3 size=4 name="_FOOD2_SET"> <script>document.write(DegUnitsChar())</script></TD>
<TD id="FOOD2_STATUS"> </TD>
</TR>
<TR>
<TD><input type="text" maxlength=31 name="FOOD3_NAME"></TD>
<TD id="FOOD3_TEMP"> </TD>
<TD><input type="text" maxlength=3 size=4 name="_FOOD3_SET"> <script>document.write(DegUnitsChar())</script></TD>
<TD id="FOOD3_STATUS"> </TD>
</TR>
<TR>
<TD>OUTPUT</TD>
<TD id="OUTPUT_PERCENT"> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR>
<TD>TIMER</TD>
<TD id="TIMER_CURR"> </TD>
<TD><input type="text" maxlength=8 size=9 name="_COOK_TIMER"></TD>
<TD id="TIMER_STATUS"> </TD>
</TR>
</TABLE>
</P>
<input type="hidden" name="EEAUTOFLUSH" value="1">
<P><div class="noborder">
<p><TABLE BORDER=0><TR><TD><input type="button" value="Submit Values" onclick="submitForm()"/></TD><TD><input value="Cancel Changes" type="button" onclick="initForm();"/></TD></form><form action="reboot.htm"><TD><input type="submit" value="Reboot Device"></TD></form></TABLE></P>
</div></P>
<P><div class="top">
<table border="0">
<tr>
<td>
<A HREF="/"><img src="logo.jpg" align="left" width="125" height="150" border=0/></A>
</td>
<td valign="bottom">
<H1>CyberQ Temperature Controller</H1>
<a href="/">Main Screen</A> | <a href="system.htm">System Setup</A> | <a href="control.htm">Control Setup</A> | <a href="wifi.htm">WIFI Setup</A> | <a href="email.htm">Email Alerts</A>
</td>
</tr>
</table>
</div></P>
</body>
</html>
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