Serial Port configuration

Setup, Configuration and Use Runtime
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1

Hello my fellow OpenHab Users

I moved from my old Raspberry 3 to an new Raspberry 4 and so i used Openhabian with OpenHab3.

So far i really like the new version and everthin works as before or even better. :slight_smile:

But i have one thing that won’t work: RaZberry and the Serial configuration

When i use openhabian-config and choose both options

(RPi) Disable serial console
(RPi3/4) move Bluetooth to mini UART
then after a reboot openhab keeps restarting but in the short period it is running i can see that /dev/ttyAMA0 is useable and recognized in Openhab.

When i just choose

(RPi3/4) move Bluetooth to mini UART
and reboot, OpenHab runs stable again but no /dev/ttyAMA0 is useable.

Does anyone of you have the same problem? Or do you see what i’m doing wrong?

best regards

Flo

2

How do you know that is the port used? Did you run dmesg | grep tty to see what devices the OS sees?

3

does the syslog give any hint about the reason for the reboots ?

4

Yes, that is what i tried and this is what i get

[ 1.329118] fe201000.serial: ttyAMA0 at MMIO 0xfe201000 (irq = 29, base_baud = 0) is a PL011 rev2
[ 1.337297] fe215040.serial: ttyS0 at MMIO 0x0 (irq = 30, base_baud = 62500000) is a 16550

1 Like
5

The only thing i see at the time it stops is:

ec 23 22:25:49 OpenHabPi frontail[368]: tail: auf ‘/var/log/openhab/openhab.log’ kann nicht mehr zugegriffen werden
Dec 23 22:25:49 OpenHabPi frontail[368]: : Datei oder Verzeichnis nicht gefunden
Dec 23 22:25:49 OpenHabPi frontail[368]: tail: ‘/var/log/openhab/openhab.log’ ist aufgetaucht; folge der neuen Datei
Dec 23 22:25:50 OpenHabPi frontail[368]: tail: auf ‘/var/log/openhab/events.log’ kann nicht mehr zugegriffen werden: Datei oder Verzeichnis nicht gefunden
Dec 23 22:25:50 OpenHabPi frontail[368]: tail: ‘/var/log/openhab/events.log’ ist aufgetaucht; folge der neuen Datei

6

Is /var/log/openhab.log writable by the openhab user?

7

that is the content of the openhab.log and events.log file. I was more refering to the linux /var/log/syslog file as this contains logs from the complete system.

8

This is the /var/log/syslog
I will give it another try when i’m at home ich pusch a “whole run” of syslog from start to the “openhab cicle”.

Thanks in advance! :slight_smile:

9

you are right. I am sorry for that.