MyController agent for Raspberry PI

[jkandasa]

Hello every one,

I started to develop agent for raspberry pi to monitor and control from MyController. I pushed first draft code on https://github.com/mycontroller-org/mcagent-rpi Communication between Raspberry PI agent(mcagent) and MyController via MQTT.

If you are interested to test this feature please let me know.
For now we can do the following actions,

External:

• ON/OFF any GPIO pin (relay control)
• Make a pin as switch (Listen GPIO pin and report to controller)

Internal:

• Monitor system memory(RAM) usage
• Monitor CPU Voltage
• Monitor CPU temperature

I'm ready to add more device support in Raspberry PI, If you have idea please let me know.

IMPORTANT: This is very initial state of agent design, We may change complete concept before actual release.

NOTE: You should use latest version of MyController from Google-Drive to use raspberry PI agent.

Thank you!

[WarLion]

What about c.h.I.p. https://getchip.com/pages/chip this can be the best solution for Mycontroller

[jkandasa]

@WarLion Yes, May be. But I do not have any C.H.I.P hardware to test.

[hqm]

@jkandasa said:

Hello every one,

I started to develop agent for raspberry pi to monitor and control from MyController. I pushed first draft code on https://github.com/mycontroller-org/mcagent-rpi Communication between Raspberry PI agent(mcagent) and MyController via MQTT.

If you are interested to test this feature please let me know.
For now we can do the following actions,

External:

• ON/OFF any GPIO pin (relay control)
• Make a pin as switch (Listen GPIO pin and report to controller)

Internal:

• Monitor system memory(RAM) usage
• Monitor CPU Voltage
• Monitor CPU temperature

I'm ready to add more device support in Raspberry PI, If you have idea please let me know.

IMPORTANT: This is very initial state of agent design, We may change complete concept before actual release.

NOTE: You should use latest version of MyController from Google-Drive to use raspberry PI agent.

Thank you!

Is there any documentation for setup both mcagent and mycontroller ?

[Tag]

@hqm said:

o add more device support in Raspberry PI, If you have idea please let me know.

WIll this also work on the orangepi? :).... that would be great!!

[jkandasa]

@hqm There is no document yet. I will create one soon. Thank you!

[jkandasa]

@Tag I do not have any OrangePI. Have to check it there.

[Tag]

@jkandasa said:

I do not have any OrangePI. Have to check it there.

Thx!
(me personally am just interested in the server stats, CPU/RAM, no need for GPIO control)
I will test on Orange Pi and keep you posted

• does not work....
  in the log i see this:

Unable to determine hardware version. I see: Hardware : sun8i

• expecting BCM2708, BCM2709 or BCM2835.
  If this is a genuine Raspberry Pi then please report this
  to projects@drogon.net. If this is not a Raspberry Pi then you
  are on your own as wiringPi is designed to support the
  Raspberry Pi ONLY.

[http://www.orangepi.org/Docs/WiringPi.html](link url) is the wiringPI lib for orange pi

[https://github.com/Pi4J/pi4j/tree/master/pi4j-example/src/main/java/orangepi](link url) Seems to be the link to PI4J the orange pi version...Maybe the above info helps

[jkandasa]

@Tag Thanks for the links. Let me update to the latest version of PI4J and let you know.

[Tag]

@jkandasa

Thx!,
Will keep an eye open for a new release!

Just in the mean time, how to fill a variable from a file?, i have tried to get this using jscript however i am not a java programmer...

i.e, ont the OrangePI in armbianthe cpu temp is stored here:

/sys/class/thermal/thermal_zone0/temp

and here is the cpu frequency

/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 

Another nice one would be the memory usage:

/sys/fs/cgroup/memory/memory.usage_in_bytes

would it be possible to read these in a script and add them to the database?

Thx!

[jkandasa]

@Tag I hope it is possible. Let me try this and update you.

[Tag]

@jkandasa

Thank you!!
Running Mycontroller for almost 2 years now, still the best controller out there!!

[skywatch]

No joy yet.....the lig file is full of this message.....

2017-07-05 11:26:29,952 ERROR [Thread-4] [org.mycontroller.agent.rpi.mqtt.RpiMqttClient:82] Unable to connect with MQTT broker [tcp://localhost:1883], Reason Code: 4,
org.eclipse.paho.client.mqttv3.MqttSecurityException: Bad user name or password
        at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:28)
        at org.eclipse.paho.client.mqttv3.internal.ClientState.notifyReceivedAck(ClientState.java:990)
        at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:118)
        at java.lang.Thread.run(Thread.java:745)

I do not need mqtt so does it have to be enabled for mcagent to work? I even allowed annonymous login in mqtt settings and still no rpi-internal appears! ??? - How do I add the internal node? A nice feature would be a 'scan for new nodes' button - not sure how feasible that would be though!

[jkandasa]

@skywatch Yes, MCagent uses MQTT to communicate with MyController. Hence you can run this on any RPI. Looks like you have not enabled allow anonymous . Kindly recheck once again.

I have added a small document to install mcagent on RPI. You can follow the document here

[skywatch]

You asked for suggestions so here's a couple for now....

1. Monitor and report network lan traffic bandwidth used (maybe with options to see different types of traffic eg tcp/http/udp etc....).

2. Get data for the number of packets sent/received by the nrf24l01+ attached to the pi.

Still, it's working well now and very useful to see this info!

[jkandasa]

@Tag said:

@jkandasa

Thx!,
Will keep an eye open for a new release!

Just in the mean time, how to fill a variable from a file?, i have tried to get this using jscript however i am not a java programmer...

i.e, ont the OrangePI in armbianthe cpu temp is stored here:

/sys/class/thermal/thermal_zone0/temp
and here is the cpu frequency

/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
Another nice one would be the memory usage:

/sys/fs/cgroup/memory/memory.usage_in_bytes
would it be possible to read these in a script and add them to the database?

Thx!

Hi @Tag
Here is the javascript to read and update RPI-internal values to MyController DB.

var myImports = new JavaImporter(java.io, java.lang, java.util, java.text, org.apache.commons.io.FileUtils);

with(myImports) {
  //get Sensors with UID tag
  var temperatureSensor = mcApi.uidTag().getByUid("rpi-temperature").getResource();
  var memorySensor = mcApi.uidTag().getByUid("rpi-memory").getResource();
  //var cpuFreqSensor = mcApi.uidTag().getByUid("rpi-cpu-freq").getResource();

  var temperature = FileUtils.readFileToString(FileUtils.getFile("/sys/class/thermal/thermal_zone0/temp"));
  var memory = FileUtils.readFileToString(FileUtils.getFile("/sys/fs/cgroup/memory/memory.usage_in_bytes"));
  //var cpuFrequency = FileUtils.readFileToString(FileUtils.getFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq "));

  //Change values
  temperatureSensor.value = parseInt(temperature) / 1000;
  memorySensor.value = parseInt(memory);
  //cpuFreqSensor.value = parseInt(cpuFrequency);

  //Update to db
  mcApi.sensor().sendPayload(temperatureSensor);
  mcApi.sensor().sendPayload(memorySensor);
  //mcApi.sensor().sendPayload(cpuFreqSensor);
}

I have commented out CPU frequency read. It needs root privilage. If you want cpuFreqSensor to be executed, you need to run MyController as root user. For me cpuFreqSensor is useless value. It never change. It is up to you.

To run this script you have to create dummy node(ex:rpi-internals-dummy) and dummy sensors for temperature, memory and cpuFrequency. And map all these sensors with UID tags to refer to the script.

You can configure this script on timer to update temperature value for N minutes once.

[Tag]

@jkandasa

Got it working for the CPU temp!!
Only problem is the CPU frequency and memory usage, for both i am not able to add a variable type when adding the sensor... this makes it impossible to add a uuid tag since the fake sensors memory and cpu simply do not show up when adding the uuid tag

On the CPU frequency... the H2+ CPU is able to scale the frequency automagically between i.e 240mhz and 1.2Ghz... this saves power and therefore makes the CPU run cooler... my OPI zero is using 500mah max these days (only peeking to 1-1.2Ghz several times per minute)... so for me it interesting to see the cpu frequency, if it is high all the time, i might have a cpu hog somewhere...
No need to run mysensors as root, i will create a root cronjob dumping the value into a file which is readable for the world, and read that file from your script;)

Thanks for helping to get this work, i can imagine this script is very usefull for the MyController community!!!

MyController just got even better!!
(hard to imagine but it seems possible!)

[jkandasa]

@Tag said:

Only problem is the CPU frequency and memory usage, for both i am not able to add a variable type when adding the sensor... this makes it impossible to add a uuid tag since the fake sensors memory and cpu simply do not show up when adding the uuid tag

If you use the SNAPSHOT version of MyController you can see CPU/Memory. I hope it will work only for MyController type gateway.

Another way, You can map CPU and Memory with >> Custom type and Variable 1 and Variable 2. Edit both variables and set Metric type as Double. Now all set.

[Tag]

@jkandasa

Did some testing, got the memory usage setup as you pointed out.
Mapped memory to type custom and variable1. Now it shows the memory usage! (i divided it by 1024 to see the Kb's in use, since that gives me a more usable number)

CPU is still work in progress, will keep you posted!, many thanks for the help!!

[naguraob]

@jkandasa
I have followed your instructions to setup the MCAgent, and its up and running.
I need only rpi-internal node hence I commented the following line in mcagent.properties file.
mcac.node.name.gpio=rpi-gpio

But I still see a node being created EUI as rpi-gpio whenever I restart the mcagent.
Can you please help me with this?

In devices.yaml file is it possible for me to change the ids i.e. can id: cpu_temperature be changed to id: CPU_TEMP?