Data RaspberryPI -> emonGLCD

Submitted by Guest on Sun, 10/03/2013 - 14:53

Hello

I managed to build a system with RaspberryPI, emonTx and emonGLCD.
I downloaded firmware into emonGLCD and emonTX (setting the right frequency first).
On the emonGLCD I used the "solarPV" example from the "EmonGLCD-master" file I got from GIT.
On the raspberry I used the "ready to go" image

Now I have data flowing this way:

emonbase ->RaspberryPI (I can see the node and the data values on the integrated web server)
emonGLCD->RaspberryPI (I can see the node and the data values on the integrated web server)

but I cannot see data RaspberryPI ->emonGLCD and the display shows "baseFail"
From the "solarPV" example I see no "payload" structure for receiving data from emonbase...
Am I right?
How to configure data raspberry->emonGLCD?

thanks

Re: Data RaspberryPI -> emonGLCD

Submitted by Jérôme on Tue, 12/03/2013 - 11:43.

Hi.

I guess you mean "emonTX ->RaspberryPI", not "emonbase ->RaspberryPI".

I don't have any emonGLCD myself. As far as I understand from the doc (http://openenergymonitor.org/emon/emonglcd), it is supposed to receive

- data from emonTX

- time from emonBase

I don't know about data from emonTX, but regarding time from emonBase, you might be interested in reading the comments on this page :

http://harizanov.com/2013/02/new-rfm2pi-board-in-the-works/

I implemented a new emonBase gateway that implements the "send time to emonGLCD" feature :

https://github.com/emoncms/raspberrypi/pull/10

I shall write a quick how to. Nothing really complicated. Stop raspberry_run.py (remonve cron line), launch rfm2pigateway.py. A little more work if you want automatic launch on startup, etc, but it may be worth trying.

Re: Data RaspberryPI -> emonGLCD

Submitted by Scarlaz (not verified) on Sun, 17/03/2013 - 19:03.

Thanks for the reply.

What I need is just feed the clock data from raspberry to emonGLCD.

I am a newbie when it comes to linux.
I found the entry on the crontab file pointing to the raspberrypi_run.php

I followed the procedures in Jit (Jerome-github / emoncms_raspberrypi)... but somehow it is not working. I guess that I have to make some parametrization somewhere...
I do not know where the updated raspberry_run is located, but it is not in the location pointed by the crontab, so I guess that I am still running with the old code.

Any suggestion?
Thanks for the impressive work!

Re: Data RaspberryPI -> emonGLCD

Submitted by Jérôme on Mon, 18/03/2013 - 12:24.

Hi.

The gateway I wrote that does send time to GLCD (this part was coded but not tested yet, I'm interested in user feedback) is a python script : rfm2pygateway.py. It comes as an alternative to raspberry_run.php.

I guess I need to clarify this. Let me write a how to, and come back here afterwards.

Re: Data RaspberryPI -> emonGLCD

Submitted by Scarlaz (not verified) on Mon, 18/03/2013 - 13:57.

Thanks for the reply!

I am looking forward to test the code when it will be ready (I should get connect my PV plant to the grid this week and so I am in the mood to "play" with emonTX, raspberry, and emonglcd).

Bye

Re: Data RaspberryPI -> emonGLCD

Submitted by Jérôme on Tue, 19/03/2013 - 08:53.

If you feel adventurous, there's a guick how to on my profile. It involves moving to emoncms dev branch.

It might be simpler for you to just modify raspberry_run.php as suggested in http://harizanov.com/2013/02/new-rfm2pi-board-in-the-works/. At least it is worth trying.

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