Print to a bluetooth device via rfcomm and printer.File() #643

I have:

• searched open and closed issues for duplicates

This is rather a question than a bug: I am trying to print to a cat thermal printer MX06 similar to this one via rfcomm and using printer.File('/dev/rfcomm0') without success. I would appreciate any help on that !

Steps to reproduce

• connect Raspberry Pi to the printer via bluetoothctl
• configure bluetooth device as serial port with sudo rfcomm bind /dev/rfcomm0 MAC-ADRESS
• create printer with p = printer.File('/dev/rfcomm0')
• command to send test line to printer with p.text("Hello World\n") not responding - no error message though

Device info

Printer: 'Cat' Thermal Printer Model MX06

python-escpos version: 3.1

python version: 3.12.2

operating system: Raspbian GNU/Linux (Raspberry Pi 4)