Python in to the magic mirror.

paulvanderheijden90

@Sean Hello Sean,
I was thinking somting was wrong because I see the buffer printing in the terminal showing:

Buffer 48 61 6c 6c 6f 20 49 6b 20 62 65 6e 20 50 61 75 6c>

i was trying to figure out the text line that it was representing but it was not showing something.

So im happy you came up with the solution for the buffer.

Unfortunly wenn at the var result code the magic mirror is crashing again and im not able to debug.
Can you please heave a look at it

/// node_helper.js

const spawn = require("child_process").spawn

var NodeHelper = require("node_helper")



module.exports = NodeHelper.create({

  socketNotificationReceived: function(notification, payload) {

    switch(notification) {

      case "GIVE_ME_DATA":

        this.job()

        break

    }

  },

  job: function() {

    var process = spawn("python", ["/home/pi/src/test.py"])

    process.stdout.on("data", (data)=>{
	
      console.log(data)

      var result = String.fromCharCode.apply(null, new Uint16Array((data))

      this.sendSocketNotification("HERE_IS_DATA", result)

    })

  }

A Former User

@paulvanderheijden90
Crashing? show me the error log.

paulvanderheijden90

@sean said in Python in to the magic mirror.:

Crashing? show me th

App threw an error during load
/home/pi/MagicMirror/modules/MMM-P2000/node_helper.js:76
}.call(this, exports, require, module, __filename, __dirname); });
                                                            ^

SyntaxError: missing ) after argument list
    at createScript (vm.js:80:10)
    at Object.runInThisContext (vm.js:139:10)
    at Module._compile (module.js:606:28)
    at Object.Module._extensions..js (module.js:653:10)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:504:12)
    at Function.Module._load (module.js:496:3)
    at Module.require (module.js:586:17)
    at require (internal/module.js:11:18)
    at loadModule (/home/pi/MagicMirror/js/app.js:127:17)
Whoops! There was an uncaught exception...
/home/pi/MagicMirror/modules/MMM-P2000/node_helper.js:76
}.call(this, exports, require, module, __filename, __dirname); });
                                                            ^

SyntaxError: missing ) after argument list
    at createScript (vm.js:80:10)
    at Object.runInThisContext (vm.js:139:10)
    at Module._compile (module.js:606:28)
    at Object.Module._extensions..js (module.js:653:10)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:504:12)
    at Function.Module._load (module.js:496:3)
    at Module.require (module.js:586:17)
    at require (internal/module.js:11:18)
    at loadModule (/home/pi/MagicMirror/js/app.js:127:17)
MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
Launching application.

A Former User

@paulvanderheijden90 said in Python in to the magic mirror.:
Your log is telling you what is wrong.
See the 76 line of node_helper.js. There could be missing ) after argument list.

paulvanderheijden90

@sean So sorry you’re totally right… I was little bit confused by all the “at” conclusens.
Im sorry I could had fixed that. And I did !

Now it is working !!!
So very nice ! im going to put this in my P2000 Raspberry python Programma. and will heave a lot of play with it.

I will post/ show you the and result !

paulvanderheijden90

Hello @Sean,
Again thank you for the help. As I say after your help it was possible for me to “print” a string variable on the magic mirror module through python.
But is was not able to put my P2000 alarm from the fire department on my screen. I noticed that it was a problem in the python script of the alarm.
I used the stdout.write function again. like you told me. but I needed to add the flush function as wel.
so now it is

sys.stdout.write("hallo ik ben Paul")
sys.stdout.flush()

And then it was working !
so thank you and here the result:

paulvanderheijden90

@sean
Hello Sean,
like I posted yesterday the app is running now. And it is showing wat I need to display. So im very happy.

But…
After a time ( more after a couple of runs ) the magic mirror app is crashed and freezed. So noting is updating any more.

My feeling is telling that the buffer were I put in the string value is filling up.

wenn i run the python script without the mirror it is running fine.

Please can you give me a help?

A Former User

@paulvanderheijden90
I have no idea about Python. I think you’d better reboot once or twice per daily to maintain RPI to be stable. You can do it with cron automatically.
The better approach would be implementing your job as native nodeJS MagicMirror module instead external python script.

sdetweil

@paulvanderheijden90 can u put your project on github and tell me where it is… I will look at it later today (us time)

paulvanderheijden90

@sdetweil
Hallo Thank you for you’re Replay

I managed to upload the project on git hub ( new experience for me )
I uploaded the magic mirror Module ( P2000) I made and the node helper.

And I added the Python project.

The python project works fine on it self. But wenn I call ( spawn ) the python. The magic mirror application stops and freezes.

I think the flush/write fills the buffer and wenn it is it full the application is stoped.

https://github.com/paulvanderheijden90/MMM-P2000-python-connect

Here is the link

sdetweil

sorry, the is no PUBLIC repo there

paulvanderheijden90

@sean
Hello Sean,
The problem is not the python project. But I think the buffer is filling up ore something.

At this point all the massages are displayed on the mirror and after 15 min the mirror is freeze.

So im looking in to it.

paulvanderheijden90

@sdetweil fixed sorry

sdetweil

@paulvanderheijden90 i don’t see the python module

you can add it to the directory and repo temporarily, then remove it later

sdetweil

@paulvanderheijden90 so far I don’t see the same crash error…

I did have to make some minor changes…

Module name to match the git repo name
path to a python script
and change the display handling…
rule is ONLY content change location is getDom()…
other routines should store data and call updateDom(0 to signal that there ARE changes to display

I’m gonna let it run for a while…

paulvanderheijden90

@sdetweil
hello ! Thank you for your help so far.

The python project is running fine on it selfs.

But wenn I use it with the magic mirror the buffer of the magic mirror is filling. And freezes.

the python project is made in combination with a Antenna.
Setup looks like https://nl.oneguyoneblog.com/2016/08/09/p2000-ontvangen-decoderen-raspberry-pi/#comment-488

so you’ll need to have data from the Multimom to get different information to send to the mirror

sdetweil

@paulvanderheijden90 I wrote a little hello world python script to send data. All that is working as expected so far

How big is the data buffer your python script sends?

paulvanderheijden90

@sdetweil
it is almost 50 char long. Im making a screen movie to let you see what I meen so it will become clear.
Send it you in a couple of minutes

Please see the full movie and notice the fail at 1:41
https://www.youtube.com/watch?v=VBYL1j4p2aI&feature=youtu.be

cowboysdude

Very interested in this project… I have a python script to control my thermostat and was wondering how to get port it over…this may give me some answers :)

sdetweil

@paulvanderheijden90 i submitted a pull request to your repo. this code runs for hours and hours…
tiny changes from yours…

the biggest is that the module filename is changed to match the name of the project
(but that isn’t why it hung)… I actually don’t know the cause on your side…

please download my code and try it out… let me know