Do not see changes to SPDR in AVRStudio, ICE200, in I/O Memory window at $0f.
Device is 4433, a slave. Talking with MPC823. The received byte is what is seen. Perhaps the debugger is showing the input buffer, and not the transmit buffer?
After I do this:
out SPDR, r17
when I look at $0f in the I/O Memory Window, I do not see the value that is in r17 there in $0f, SPDR.
Is this normal? Oh, I should admit that the master receives the correct byte! So perhaps is not a big problem!
With all congeniality,