Error #1:
I already checked VERSIONR before.
That would be quite weird to have a substantial bug in my spi lib although sending and receiving works flawlessly.
But before I do access memory I read Sn_RX_RSR to get frame length and read Sn_RX_RD to get start address.
How can spi fail on Sn_IR but work for all other registers?
I’ve already spent quite a bit of time on debugging and like to get some kind of proof that this behavior can’t be reproduced