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Soko,<br>
<br>
the webserver REST API provides a simple command execution endpoint
you can use to execute Javascript code as well.<br>
<br>
See:<br>
- <a
href="https://docs.openvehicles.com/en/latest/components/ovms_webserver/docs/index.html#authorization">https://docs.openvehicles.com/en/latest/components/ovms_webserver/docs/index.html#authorization</a><br>
<br>
The scripting system has a simple metrics getter and JSON encoder.<br>
<br>
See:<br>
- <a
href="https://docs.openvehicles.com/en/latest/userguide/scripting.html#ovmsmetrics">https://docs.openvehicles.com/en/latest/userguide/scripting.html#ovmsmetrics</a><br>
- <a
href="https://docs.openvehicles.com/en/latest/userguide/scripting.html#json">https://docs.openvehicles.com/en/latest/userguide/scripting.html#json</a><br>
<br>
Example executing a shell command:<br>
<br>
<tt>-
<a class="moz-txt-link-freetext" href="http://myovms.local/api/execute?apikey=mypassword&output=text&command=stat">http://myovms.local/api/execute?apikey=mypassword&output=text&command=stat</a></tt><br>
<br>
Example getting a single metric value:<br>
<br>
<tt>-
<a class="moz-txt-link-freetext" href="http://myovms.local/api/execute?apikey=mypassword&type=js&output=text&command=print(OvmsMetrics.Value(">http://myovms.local/api/execute?apikey=mypassword&type=js&output=text&command=print(OvmsMetrics.Value(</a>"v.b.soc"))</tt><br>
<br>
Examples getting multiple metrics JSON encoded:<br>
<br>
<tt>-
<a class="moz-txt-link-freetext" href="http://myovms.local/api/execute?apikey=mypassword&type=js&output=text&command=JSON.print(OvmsMetrics.GetValues(">http://myovms.local/api/execute?apikey=mypassword&type=js&output=text&command=JSON.print(OvmsMetrics.GetValues(</a>"m.net."))</tt><tt><br>
</tt><tt>-
<a class="moz-txt-link-freetext" href="http://myovms.local/api/execute?apikey=mypassword&type=js&output=text&command=JSON.print(OvmsMetrics.GetValues(">http://myovms.local/api/execute?apikey=mypassword&type=js&output=text&command=JSON.print(OvmsMetrics.GetValues(</a>["v.c.charging","v.b.soc"]))</tt><br>
<br>
(URI encode as needed)<br>
<br>
Also see the scripting documentation and the plugin examples on how
to add custom modules providing custom commands.<br>
<br>
Of course you can also write data to files and poll those via HTTP.
That's one of the reasons the webserver provides access to the file
system. Write files in C++ as usual, see scripting object VFS for
script based file I/O.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 24.08.20 um 18:01 schrieb Soko:<br>
</div>
<blockquote type="cite"
cite="mid:b2d6da39-0840-8960-9e88-04f02ddd193c@soko.cc">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<p>Hi again,</p>
<p>Before I decide how to do this I would like to explore the
other way: My home automation is polling the data from OVMS.</p>
<p>I have had a look to the HTTP API. But it seems this is an API
for the server on the internet and not for OVMS itself, correct?</p>
<p>Next option: My home automation does a simple HTTP-GET to OVMS
and reads data like this.<br>
Is there a way to read metrics like this?<br>
I have found the config->webserver site. I could point it to
an own dir like /store/data. Now I could write/update one file
there from my vehicle-module called "current" with all the data
I need. Then simply to a http-get to 192.168.4.1/current and I
get the data of the file. Is it easy - and most important:
allowed - to write/update into a file in OVMS.</p>
<p>thanks heaps for the input</p>
<p>Soko<br>
</p>
<div class="moz-cite-prefix">On 24.08.2020 01:46, Mark
Webb-Johnson wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9D3C90E6-942D-4E41-BEE5-0E37579AA08F@webb-johnson.net">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
The vehicle module is definitely the wrong place to do this.
<div class=""><br class="">
</div>
<div class="">If you really want to implement in C++, I suggest
you look at the ovms_server_v3 module. You could use that as a
template for what you need. It should periodically read from
the metrics, and send what you need to your home automation.</div>
<div class=""><br class="">
</div>
<div class="">You should also consider a javascript plugin to do
this. That would probably be simpler and easier to update
(without firmware changes). If it is a common home automation
system, you could write it as a plugin and share for others
with the same system.</div>
<div class=""><br class="">
</div>
<div class="">Regards, Mark<br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On 24 Aug 2020, at 12:00 AM, Soko <<a
href="mailto:ovms@soko.cc" class=""
moz-do-not-send="true">ovms@soko.cc</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">Hi Mark,<br class="">
<br class="">
I have my own home automation running at home. I want
to push the current values (SoC, odometer, ...) once
my car is in the driveway and OVMS is booked into my
WiFi. My home automation has a TCP server running were
I process the data further. <br class="">
<br class="">
I don't want to the OVMS Server functionality as I'm
not a Linux guy, don't want the data in the internet
and no SIM use on the OVMS. <br class="">
<br class="">
So does the canlog_tcpclient.cpp take care of the
concurrency etc. correctly? I will do the same in my
code. Or should I start a separate task from the
vehicle task for every push?<br class="">
<br class="">
thx<br class="">
Soko<br class="">
<br class="">
<div class="gmail_quote">On 23 August 2020 16:37:46
CEST, Mark Webb-Johnson <<a
href="mailto:mark@webb-johnson.net" class=""
moz-do-not-send="true">mark@webb-johnson.net</a>>
wrote:
<blockquote class="gmail_quote" style="margin: 0pt
0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
204, 204); padding-left: 1ex;">
<pre class="k9mail">What are you trying to do?
>From a design point of view, it seems strange to have an outgoing tcp connection from a vehicle module. Those modules need to be very responsive and realtime.
Mongoose is the correct approach. But take care, because most of the work is done in the network (not vehicle) task, so you need to deal with mutex and other concurrency issues.
Regards, Mark
<blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;">On 23 Aug 2020, at 7:54 PM, Soko <<a href="mailto:ovms@soko.cc" class="" moz-do-not-send="true">ovms@soko.cc</a>> wrote:
Hey everyone,
I'm trying to send a simple tcp msg to a remote tcp-server. I've looked into the FreeRTOS example (esp-idf\examples\protocols\sockets\tcp_client\) which works (kinda) but OVMS behaves weirdly when I do it like that.
Thomas pointed me to mongoose...
So is this the way to go? I would take canlog_tcpclient.cpp as a model...
Ohh... and is it OK if I send my tcp msg in the vehcile task? Mongoose should take care of unforeseen errors so the task shouldn't block, right?
thx
Soko<hr class="">OvmsDev mailing list
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<pre class="moz-signature" cols="72">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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