Official EVOK API

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  evok service fails to start after a reboot
  • stephane clavel

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  Looks like an apt upgrade was issued without a reboot. Same thing happened to me after an apt upgrade reboot. Now your os runs on kernel 4.19 and evok can't access the modules. I think the kernel modules are incompatible with the new kernel. Only fresh install of unipian was the easiest way to get the os working again without issuing apt upgrade.... Clean install also fails from a clean raspbian stretch with github install instructions.
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  Setup evok on clean and updated 2019-04-08-raspbian-stretch-lite.img
  • Christian

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  Same happened to me yesterday, running apt update & apt upgrade on fresh UniPian-Neuron-2019-01-07-v1.9 results in broken system. I'm sure that I did just the same steps a couple of weeks ago without any problems.
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  Multiple xS50 on a L513 (RS485)
  • salorob

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  @boy-lenssen Yeah, that's something we are working on to protect bricking the units during the FW upgrade process. If the RUN led is dead, send it to us so we can reflash the FW.
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  • kokoele

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  Reading analog input values fast on Axon M505 (under 5ms)
  • tomkling

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  Hi again and thanks for the help, I've used ModbusTCP now and the input / output rates are much better, if someone's interested: Reading only = 2,5 - 7,4 ms Reading and Writing to another pin = 7 - 15 ms Reading, Processing the measures, and Writing to another pin = 6 - 18 ms I used Analog Input 2.1 / 2.2 and Analog Output 2.1 for my application
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  • DiMarco

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  Reinstalling EVOK on a new RPi Image
  • HarishKumar

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  Hello @HarishKumar, sorry for the late reply. Evok in version 1 is no longer supported (didn't you mean Evok-mini?). The current version of Evok is 2.1.x. As the first step, you should try to download and install the latest version via Debian package subsystem: apt-get update apt-get install evok Or directly: wget https://repo.unipi.technology/debian/pool/e/evok_2.1.2_armhf.deb dpkg -i evok_2.1.2_armhf.deb
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  All ports disappear via webinterface after EVOK update on L203
  • wizro_pl

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  Right now it's best to use the install method starting from Raspbian (but currently only Raspbian Stretch). We are currently working on image build system which helps us to get faster releases of images and application updates (debian packages).
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  • lay1014

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  Can't access relays from 2_01 to 2_05 on L513
  • valtert

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  Hello @valtert, the description on the page is misleading. The real situation is this: Analog output on Group 1 is capable of outputing 0-10V, 0-20mA and measuring resistance up to 100kOhm Analog outputs on Group 2 and 3 and on the extensions are only capable of outputing 0-10V Same goes for Neuron and Axon product line. If you need second AO in current mode for your project, you have two options: add a second PLC as a "dumb" extension and communicate with the master PLC via ModbusRTU, ModbusTCP or SSCP purchase a 3rd party ModbusRTU IO module, such as this: https://www.advantech.com/products/gf-5vtd/adam-4024/mod_5e18f39b-38ef-4033-98f9-1ede917139ee I am sorry for the incovenience, we will fix the product description shortly. Best regards, Martin
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  Need Some sort of Jumpstart
  • knebb

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  @knebb said in Need Some sort of Jumpstart: it writes the state as 0 or 1 into each of the uint8_t . Or, using semantic constants, as FALSE and TRUE. Directly using bits would be really slow and error prone (and a nightmare for language bindings).
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  Read/Write Serial port through Evok API
  • rtatibouet

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  Ok, I'll do it on the board then. I'll take my chances communicating directly with the modbus tcp server instead of using Evok's layer. Cheers, Ronan
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  • elaine95

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  • elaine95

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  • elaine95

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  DALI interface integration in python-dali
  • Martijn Hemeryck

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  Hi @martijn-hemeryck, those are great news! I'm glad we were able to put it together, together:) I'm looking forward for your results. Martin
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  Faster way to read state of DI and control of relay ?
  • Henkka

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  I took up the sysfs-based approach in my own (golang-based) project: https://github.com/mhemeryck/unipitt Basically, it does active polling on a series of files, representing the different inputs and pushes out an MQTT-event in case there's a change.
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  Alias
  • Anders Kjellström

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  Hi @anders-kjellström, it works, you can check in the default installation of the Evok: Do you have some example where the aliases don't work? Best regards, Martin
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  Unipi 1.1 Evok 1.0.1 to 2.0.7 no UART
  • jcmschoot

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  Yes, it is clear now. You have to implement this kind of functionality by yourself as Evok does not offer it.
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  MQTT to unipi Control Panel
  • juntiedt

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  @juntiedt said in MQTT to unipi Control Panel: As the flow is to big to upload I am just sendig a picture. Let me know if you want to get the flow directly. Hi @juntiedt, it looks like a very great job! Could you consider hosting the file and provide a public link? You might for instance use a Dropbox / pCloud public link, or a GitHub gist. If anyone has ideas for improvements please let me know. I think it might be possible to parametrize the flows with variables, in order to avoid repetition. At least, it seems it was done this way by @Jan-Teunis here: https://forum.unipi.technology/topic/735/node-red-flow-evok-to-mqtt-to-evok