What is the problem?
After Update from OctoPi 0.15.0. OctoPrint 1.3.8 shows this error missage:
Offline (Error: IOError: '[Errno 25] Inappropriate ioctl for device' @ comm.py:_readline:2417)
and do not connect to my Prusa i3 Mk3 using EINSY RPi Port connected to Raspberry GPIO using /dev/ttyAMA0.
This config works fine with OctoPi 0.14.0.
What did you already try to solve it?
I have tested using the USB (/dev/ttyACM0) on Raspberry and the USB Port on the EINSY, and with this cable, OctoPi connects to EINSY board.
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware,
serial.log or output on terminal tab, ...)
Printer Prusa i3 Mk3
Firmware 3.1.3-RC1-243 prusa3d.com