hy @mtoman
thank you for your reply!!!
Indeed the fleet runs on RPi3
I asked the question on my company user account again @Markus.Kohn.GWA
Anyway:
Im able to see /dev/ttyAMA0 inside hostOs and Tower container.
The problem is:
The software running in the tower container does not use hci. It wants to send its ohn commands to the serial interface/ Bluetooth device.
Which is most likely already in use by another process.
So the goal would be to ensure that nothing else is initializing a bluetooth.service or hciattach beside the tower container
Best Regards
Markus