Hi all,
I'm trying to communicate between a Raspberry Pi (3B, 3B+, 4B) on
OpenBSD 6.9 and an Arduino with the built in (GPIO) serial interface.
With the Raspi 3B version, the serial interface definitely seems to be
work. I can use the console when connecting my laptop to the UART pins
of the Raspi and:
boot> set tty com0
Now I do not want to communicate with the Arduino. The tty should not
block the serial interface:
boot> set tty fb0
However, when I try to use any available serial interface, I always get
an error message:
# cu /dev/cuaU0 -s 115200
cu: open("/dev/cuaU0"): Device not configured
This repeats for all available devices.
Has someone successfully used the serial device? Any hints?
Thanks
Sven
