Custom JavaScript

SolarFlor · Post by **SolarFlor** » 23 Jun 2014 22:19

Hi,
I have a Photovoltaic system that I'm monitoring with my Raspberry PI.

I'm able to read with an URL the value of the power generated [$kw_prod] with the following script

Code: Select all

$URL_123solar = "http://192.168.1.22/123solar/programs/programmultilive.php";
$json_123solar = file_get_contents($URL_123solar);
    
$data_123solar = json_decode($json_123solar, true);
if (isset($data_123solar["GPTOT"]))
{
	$kw_prod = $data_123solar["GPTOT"];
} else {
	$kw_prod = "0";
}
# ----------------------

I would like to display the value of $kw_prod on my UI Automation.

I suppose I should use "Load custom JavaScript code" or "Load custom JavaScript file" module but honestly I don't know where to start from.

Thanks for your help

n0ahg · Post by **n0ahg** » 23 Jun 2014 23:57

You'd be better of using a HTTP Device

SolarFlor · Post by **SolarFlor** » 24 Jun 2014 00:23

What does it mean?
please give me some examples to learn about usage of HTTP Device

SolarFlor · Post by **SolarFlor** » 24 Jun 2014 00:41

I have filled URL as in the image but I don't know how to provide all the other information

Post by **PoltoS** » 24 Jun 2014 02:20

The scale is just a text, interval - obvious - in seconds, inline parser is just in case your stuff does not return a number

SolarFlor · Post by **SolarFlor** » 24 Jun 2014 13:39

when I launch the URL on my browser I can see the following:

{"PROD":3897,"TOT_PROD":"Today (18,0 kWh)","CONS":337,"STATO":"On - Full Power","TOT_CONS":9.5,"NET":3559}

I'm interested to visualise the first value (3897). What I should write on 'inline parser'?
many thanks

SolarFlor · Post by **SolarFlor** » 24 Jun 2014 20:56

Found it.
I create a dedicated php that is generate the value of produced power

Code: Select all

<?php
$URL_123solar = "http://192.168.1.22/123solar/programs/programmultilive.php";
$json_123solar = file_get_contents($URL_123solar);
    
$data_123solar = json_decode($json_123solar, true);
if (isset($data_123solar["GPTOT"]))
{
	$kw_prod = $data_123solar["GPTOT"];
} else {
	$kw_prod = "0";
}
echo $kw_prod
?>

and I have configured the module as below

: HTTP.jpg (28.8 KiB) Viewed 13979 times

The result is as below (see PV Power)

: HTTP2.jpg (30.39 KiB) Viewed 13979 times

The only thing wrong is that I cannot see the unit of measurement (Watts) I entered in Sensor Scale

SolarFlor · Post by **SolarFlor** » 24 Jun 2014 22:15

I'm trying now to control a LAN Relay with HTTP Device SwitchBinary

What should be the return of the "URL to get value" to proper drive the status on/off?
Now the return is 0/1 but it doesn't work

Post by **PoltoS** » 25 Jun 2014 00:56

should be on/off (see the line below the URL getter). And instead of your php nightmare you can use JS Inline code. For your switch use:
%% ? "on" : "off"

for previous meter something like this (not tested):
JSON.parse(%%)["GPTOT"] || 0

Pretty flexible, no?

isachris83 · Post by **isachris83** » 01 Aug 2014 00:55

Hi,
can we have an example of inline Javascript to get the temperature of a web page (from owhttpd) like this ?

"<HTML><HEAD><TITLE>1-Wire Web: 28.3CD884030000/temperature10</TITLE></HEAD>
<BODY BGCOLOR='#BBBBBB'><TABLE WIDTH='100%' BGCOLOR='#DDDDDD' BORDER='1'><TR><TD>OWFS on localhost:4304</TD><TD><A HREF='/'>Bus listing</A></TD><TD><A HREF='http://www.owfs.org'>OWFS homepage</A></TD><TD><A HREF='http://www.maxim-ic.com'>Dallas/Maxim</A></TD><TD>by <A HREF='mailto://palfille@earthlink.net'>Paul H Alfille</A></TD></TR></TABLE>
<H1>28.3CD884030000/temperature10</H1><HR>
<BR><small><A href='/uncached/28.3CD884030000/temperature10'>uncached version</A></small><TABLE BGCOLOR="#DDDDDD" BORDER=1><TR><TD><A HREF='/28.3CD884030000/'><CODE><B><BIG>up</BIG></B></CODE></A></TD><TD>directory</TD></TR><TR><TD><B>temperature10</B></TD><TD> 24.25</TD></TR>
</TABLE></BODY></HTML>"

I would like to get the "24.25" value.

Thanks PoltoS

Christophe

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