I work on a project where I need to communicate with two external MCUs, via SPI.
I've successfully used MRAA lib to test the communications to single MCU, but when I've tried to write to the second one I've noticed I only got /dev/spidev2.0 in my system.
As I understand to access the second MCU (using same MOSI/MISO/SCK lines) I should have spidev2.1 also present.
What might be an issue and how to fix it?
I am using ubilinux kernel with RT patch right now,
Linux ubilinux4 4.9.45-rt37-upboard+ #1 SMP PREEMPT RT Sun Aug 11 10:20:11 UTC 2019 x86_64 GNU/Linux
although my issue was also present before patching.