Openhabian - Arduino via USB

Setup, Configuration and Use Beginners
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  • Platform information: Raspberry Pi 2
  • openHAB version: last OpenHabian downloaded

    • Items
      String ArduinoData “ArduinoData [%s ON/OFF]” (arduino) {serial="/dev/ttyACM0@9600"}

    • Sitemap
      Frame label=“Arduino”{
      Text item=ArduinoData
      }
      serialbinding installed

Hello!
After some investigation, reading, trying I can’t find, where it stucks.

I just want do show a “signal” comming from the arduino and I want to do it with USB connection. No WiFi, modbus or other possibilities.

I send each second “S1:0\n” or “S1:1\n”

    void loop() {
          Serial.print("S1:0");
          Serial.println(";");  
          delay(1000);
          Serial.print("S1:1");
          Serial.println(";");  
          delay(1000);
    }

On raspberry I see the incomming data with minicom
minicom -b 9600 -D /dev/ttyACM0

I tried to set openhabian on ttyACM0
export EXTRA_JAVA_OPTS="-Dgnu.io.rxtx.SerialPorts=/dev/ttyACM0"

When I had only 4 DS1820 running, everything worked. Now they are disconnected and I started to add this USB connection.

Can I check if openhab get the data?

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Use the openhabian-config tool and select Apply Improvements then Fix Permissions to make sure that openhab has the needed permissions to access the serial ports.

3

Thank you!
I’ve done this. (call sudo openhabian-config via ssh - done all “10 | Apply Improvements”)

ls -al /dev/ttyACM0
crwxrwxrwx 1 root dialout 166, 0 Dec 30 15:43 /dev/ttyACM0

(I verified with minicom the info is comming in on ttyACM0)

grep ‘dialout’ /etc/group
dialout:x:20:openhabian,openhab

So I think, the permission should be OK.

In an other thread
vzorglub posted for someone other with the same problem “Can you post the serial.cfg file, please?”
It should be in etc/openhab2/services
If it is not there then the binding didn’t install properly

The problem in this thread was (I think) never solved.

I have also nothing like serial.cfg

sudo ls /etc/openhab2/services
addons.cfg dashboard.cfg readme.txt rrd4j.cfg runtime.cfg

I added in (somewhere - I do not remember) some cfg file “bindings=serial” (I could add more bindings comma seperated). This was told in some forumpost.

in PaperUI -> Add ons -> Bindings ->

Serial Binding binding-serial1 - 1.13.0

seems to be installed.

So what can and should I do next?
Thank you in advanced,
Andi

4

Is openhab a member of the tty group?

Also in openhabian-config is System Settings (30) and Serial Port (35) are they set correctly?