Serial Gateway not connecting - ttyUSB0 in use

[electrik]

This doesn't say much to me. I think you should check what openhab shows in the log and configuration. Or other applications that use that port

[niclas]

Could it have anything to do with permissions? Perhaps try somthing like "sudo chmod 777 /dev/ttyUSB0"
If it works you would need to find a more permantent solution like adding group/user access to to the device..
Perhaps a long shot..

I've had similar problems using arduino IDE before still have som problems when using ISP-programmer.

[niclas]

This post is deleted!

[CraigDubya]

@niclas Hi,

I don't think it's permissions related, I used:

sudo usermod -a -G dialout openhab
sudo usermod -a -G tty openhab

when I was setting up according to this setup guide

[CraigDubya]

So I think I have solved the ttyUSB0 in use problem - I had a bridge definition in my things file, and I had added a serial gateway through paperui, and I think they were conflicting.

I've removed the paperui gateway and reverted to the things file entry, and visa-versa and have not seen that error again.

However, I can't seem to get an example binary switch sensor node to be registered by the gateway, or read the serial debug of the gateway using the arduino ide

[TimO]

@CraigDubya is your user which is executing the Arduino ide also in the dialout group? Did you program the gateway via this ide?
Please ensure, that only one software is using the serial connection at a time. But you are able to switch between Arduino ide and Openhab if you shut down the other software before using the other.

[CraigDubya]

@TimO Hi,

So, something interesting... If I stop the openhab2.service I still get no debug information on the serial monitor of the Arduino IDE. Then, if I stop the mysgw.service and open the Arduino IDE I can no longer select the ttyUSB0 port for the serial monitor.

I didn't use the native Arduino IDE to program the serial monitor, but I used my laptop to do that.

[CraigDubya]

I've also tried adding the user pi to the dialout and tty groups, but still I can't select any port in the arduino ide when mysgw.service and openhab2.service are stopped. It's as if the mysgw.service is creating the ttyUSB0 port (virtually?) :confused:

[CraigDubya]

I did a ls /dev/tty* and ttyUSB0 had disappeared...so I unplugged the gateway and plugged it back in again (all while mysgw.service is stopped) then another ls /dev/tty* and ttyUSB0 was back. I started the arduino ide and selected ttyUSB0 and in the serial monitor I now have:

0;255;3;0;9;0 MCO:BGN:INIT GW,CP=RNNGA---,FQ=16,REL=255,VER=2.3.2
0;255;3;0;9;5 TSM:INIT
0;255;3;0;9;7 TSF:WUR:MS=0
0;255;3;0;9;15 TSM:INIT:TSP OK
0;255;3;0;9;18 TSM:INIT:GW MODE
0;255;3;0;9;21 TSM:READY:ID=0,PAR=0,DIS=0
0;255;3;0;9;24 MCO:REG:NOT NEEDED
0;255;3;0;14;Gateway startup complete.
0;255;0;0;18;2.3.2
0;255;3;0;9;28 MCO:BGN:STP
0;255;3;0;9;35 MCO:BGN:INIT OK,TSP=1
0;255;3;0;9;38 TSM:READY:NWD REQ
0;255;3;0;9;45 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:

[CraigDubya]

When I restart the mysgw.service and do a ls /dev/tty* the ttyUSB0 is shown in blue as opposed to yellow as seen below.

[mfalkvidd]

@CraigDubya mysgw.service is partly a software gateway. From earlier posts, it seems you also have a hardware gateway (based on an Arduino Nano). Is that correct?

If so, the two gateways might conflict. Is your intention to run two gateways?

[CraigDubya]

@mfalkvidd Hi,

No, my intention is not to run 2 gateways, I did a make on the mysgw.service and changed the port to ttyUSB020 in the config and restarted openhab. I now have communication with the hardware gateway. It seems it's all working properly now, but I'm a bit concerned that I may still have a software gateway running aswell.

[CraigDubya]

I just rebooted my pi, and whatever I did to get the bridge working has reset, and I'm not getting any node connections anymore :confused:

[CraigDubya]

If I stop the mysgw.service and restart openhab2.service the gateway works fine. So, the mysgw.service is starting on bootup, how do I remove or disable mysgw.service from bootup?

[CraigDubya]

@mfalkvidd Sorry, in answer to your earlier question, that's correct... I have an Arduino Nano connected via USB to the raspberry pi as a hardware serial gateway

[CraigDubya]

Ah I found it using:

sudo systemctl disable mysgw.service

Now when I reboot the pi the gateway is working and my sensor node is reporting correctly.

Thanks for everyones help, it's been 2 years since I last played with openhab and mysensors, and what I learned back then I had mostly forgotten. Also with the openhab and mysensors updates that have happened in that time it's been a struggle to get back on track :grin:

[mfalkvidd]

Great work @CraigDuby, thanks for reporting back.

[CraigDubya]

And so here is my serial gateway with 3d printed case: